Merge branch 'develop' into ximinez/acquireAsyncDispatch

* upstream/develop:
  ci: [DEPENDABOT] bump tj-actions/changed-files from 46.0.5 to 47.0.4 (6394)
  ci: [DEPENDABOT] bump codecov/codecov-action from 5.4.3 to 5.5.2 (6398)
  ci: Build docs in PRs and in private repos (6400)
  ci: Add dependabot config (6379)
  Fix tautological assertion (6393)
  chore: Apply clang-format width 100 (6387)

.clang-tidy

@@ -1,143 +1,105 @@
 ---
 Checks: "-*,
-  bugprone-argument-comment,
-  bugprone-assert-side-effect,
-  bugprone-bad-signal-to-kill-thread,
-  bugprone-bool-pointer-implicit-conversion,
-  bugprone-casting-through-void,
-  bugprone-chained-comparison,
-  bugprone-compare-pointer-to-member-virtual-function,
-  bugprone-copy-constructor-init,
-  bugprone-dangling-handle,
-  bugprone-dynamic-static-initializers,
-  bugprone-fold-init-type,
-  bugprone-forward-declaration-namespace,
-  bugprone-inaccurate-erase,
-  bugprone-incorrect-enable-if,
-  bugprone-incorrect-roundings,
-  bugprone-infinite-loop,
-  bugprone-integer-division,
-  bugprone-lambda-function-name,
-  bugprone-macro-parentheses,
-  bugprone-macro-repeated-side-effects,
-  bugprone-misplaced-operator-in-strlen-in-alloc,
-  bugprone-misplaced-pointer-arithmetic-in-alloc,
-  bugprone-misplaced-widening-cast,
-  bugprone-multi-level-implicit-pointer-conversion,
-  bugprone-multiple-new-in-one-expression,
-  bugprone-multiple-statement-macro,
-  bugprone-no-escape,
-  bugprone-non-zero-enum-to-bool-conversion,
-  bugprone-parent-virtual-call,
-  bugprone-posix-return,
-  bugprone-redundant-branch-condition,
-  bugprone-shared-ptr-array-mismatch,
-  bugprone-signal-handler,
-  bugprone-signed-char-misuse,
-  bugprone-sizeof-container,
-  bugprone-spuriously-wake-up-functions,
-  bugprone-standalone-empty,
-  bugprone-string-constructor,
-  bugprone-string-integer-assignment,
-  bugprone-string-literal-with-embedded-nul,
-  bugprone-stringview-nullptr,
-  bugprone-suspicious-enum-usage,
-  bugprone-suspicious-include,
-  bugprone-suspicious-memory-comparison,
-  bugprone-suspicious-memset-usage,
-  bugprone-suspicious-realloc-usage,
-  bugprone-suspicious-semicolon,
-  bugprone-suspicious-string-compare,
-  bugprone-swapped-arguments,
-  bugprone-terminating-continue,
-  bugprone-throw-keyword-missing,
-  bugprone-undefined-memory-manipulation,
-  bugprone-undelegated-constructor,
-  bugprone-unhandled-exception-at-new,
-  bugprone-unique-ptr-array-mismatch,
-  bugprone-unsafe-functions,
-  bugprone-virtual-near-miss,
-  cppcoreguidelines-no-suspend-with-lock,
-  cppcoreguidelines-virtual-class-destructor,
-  hicpp-ignored-remove-result,
-  misc-definitions-in-headers,
-  misc-header-include-cycle,
-  misc-misplaced-const,
-  misc-static-assert,
-  misc-throw-by-value-catch-by-reference,
-  misc-unused-alias-decls,
-  misc-unused-using-decls,
-  readability-duplicate-include,
-  readability-enum-initial-value,
-  readability-misleading-indentation,
-  readability-non-const-parameter,
-  readability-redundant-declaration,
-  readability-reference-to-constructed-temporary,
-  modernize-deprecated-headers,
-  modernize-make-shared,
-  modernize-make-unique,
-  performance-implicit-conversion-in-loop,
-  performance-move-constructor-init,
-  performance-trivially-destructible
+  bugprone-argument-comment
   "
-# ---
-# checks that have some issues that need to be resolved:
-#
-# bugprone-empty-catch,
+# bugprone-assert-side-effect,
+# bugprone-bad-signal-to-kill-thread,
+# bugprone-bool-pointer-implicit-conversion,
+# bugprone-casting-through-void,
+# bugprone-chained-comparison,
+# bugprone-compare-pointer-to-member-virtual-function,
+# bugprone-copy-constructor-init,
 # bugprone-crtp-constructor-accessibility,
+# bugprone-dangling-handle,
+# bugprone-dynamic-static-initializers,
+# bugprone-empty-catch,
+# bugprone-fold-init-type,
+# bugprone-forward-declaration-namespace,
+# bugprone-inaccurate-erase,
 # bugprone-inc-dec-in-conditions,
-# bugprone-reserved-identifier,
+# bugprone-incorrect-enable-if,
+# bugprone-incorrect-roundings,
+# bugprone-infinite-loop,
+# bugprone-integer-division,
+# bugprone-lambda-function-name,
+# bugprone-macro-parentheses,
+# bugprone-macro-repeated-side-effects,
+# bugprone-misplaced-operator-in-strlen-in-alloc,
+# bugprone-misplaced-pointer-arithmetic-in-alloc,
+# bugprone-misplaced-widening-cast,
 # bugprone-move-forwarding-reference,
-# bugprone-unused-local-non-trivial-variable,
-# bugprone-return-const-ref-from-parameter,
-# bugprone-switch-missing-default-case,
-# bugprone-sizeof-expression,
-# bugprone-suspicious-stringview-data-usage,
-# bugprone-suspicious-missing-comma,
-# bugprone-pointer-arithmetic-on-polymorphic-object,
+# bugprone-multi-level-implicit-pointer-conversion,
+# bugprone-multiple-new-in-one-expression,
+# bugprone-multiple-statement-macro,
+# bugprone-no-escape,
+# bugprone-non-zero-enum-to-bool-conversion,
 # bugprone-optional-value-conversion,
+# bugprone-parent-virtual-call,
+# bugprone-pointer-arithmetic-on-polymorphic-object,
+# bugprone-posix-return,
+# bugprone-redundant-branch-condition,
+# bugprone-reserved-identifier,
+# bugprone-return-const-ref-from-parameter,
+# bugprone-shared-ptr-array-mismatch,
+# bugprone-signal-handler,
+# bugprone-signed-char-misuse,
+# bugprone-sizeof-container,
+# bugprone-sizeof-expression,
+# bugprone-spuriously-wake-up-functions,
+# bugprone-standalone-empty,
+# bugprone-string-constructor,
+# bugprone-string-integer-assignment,
+# bugprone-string-literal-with-embedded-nul,
+# bugprone-stringview-nullptr,
+# bugprone-suspicious-enum-usage,
+# bugprone-suspicious-include,
+# bugprone-suspicious-memory-comparison,
+# bugprone-suspicious-memset-usage,
+# bugprone-suspicious-missing-comma,
+# bugprone-suspicious-realloc-usage,
+# bugprone-suspicious-semicolon,
+# bugprone-suspicious-string-compare,
+# bugprone-suspicious-stringview-data-usage,
+# bugprone-swapped-arguments,
+# bugprone-switch-missing-default-case,
+# bugprone-terminating-continue,
+# bugprone-throw-keyword-missing,
 # bugprone-too-small-loop-variable,
+# bugprone-undefined-memory-manipulation,
+# bugprone-undelegated-constructor,
+# bugprone-unhandled-exception-at-new,
+# bugprone-unhandled-self-assignment,
+# bugprone-unique-ptr-array-mismatch,
+# bugprone-unsafe-functions,
+# bugprone-unused-local-non-trivial-variable,
+# bugprone-unused-raii,
 # bugprone-unused-return-value,
 # bugprone-use-after-move,
-# bugprone-unhandled-self-assignment,
-# bugprone-unused-raii,
-#
-# cppcoreguidelines-misleading-capture-default-by-value,
+# bugprone-virtual-near-miss,
 # cppcoreguidelines-init-variables,
+# cppcoreguidelines-misleading-capture-default-by-value,
+# cppcoreguidelines-no-suspend-with-lock,
 # cppcoreguidelines-pro-type-member-init,
 # cppcoreguidelines-pro-type-static-cast-downcast,
-# cppcoreguidelines-use-default-member-init,
 # cppcoreguidelines-rvalue-reference-param-not-moved,
-#
+# cppcoreguidelines-use-default-member-init,
+# cppcoreguidelines-virtual-class-destructor,
+# hicpp-ignored-remove-result,
 # llvm-namespace-comment,
 # misc-const-correctness,
+# misc-definitions-in-headers,
+# misc-header-include-cycle,
 # misc-include-cleaner,
+# misc-misplaced-const,
 # misc-redundant-expression,
-#
-# readability-avoid-nested-conditional-operator,
-# readability-avoid-return-with-void-value,
-# readability-braces-around-statements,
-# readability-container-contains,
-# readability-container-size-empty,
-# readability-convert-member-functions-to-static,
-# readability-const-return-type,
-# readability-else-after-return,
-# readability-implicit-bool-conversion,
-# readability-inconsistent-declaration-parameter-name,
-# readability-identifier-naming,
-# readability-make-member-function-const,
-# readability-math-missing-parentheses,
-# readability-redundant-inline-specifier,
-# readability-redundant-member-init,
-# readability-redundant-casting,
-# readability-redundant-string-init,
-# readability-simplify-boolean-expr,
-# readability-static-definition-in-anonymous-namespace,
-# readability-suspicious-call-argument,
-# readability-use-std-min-max,
-# readability-static-accessed-through-instance,
-#
+# misc-static-assert,
+# misc-throw-by-value-catch-by-reference,
+# misc-unused-alias-decls,
+# misc-unused-using-decls,
 # modernize-concat-nested-namespaces,
+# modernize-deprecated-headers,
+# modernize-make-shared,
+# modernize-make-unique,
 # modernize-pass-by-value,
 # modernize-type-traits,
 # modernize-use-designated-initializers,
@@ -149,50 +111,79 @@ Checks: "-*,
 # modernize-use-starts-ends-with,
 # modernize-use-std-numbers,
 # modernize-use-using,
-#
 # performance-faster-string-find,
 # performance-for-range-copy,
+# performance-implicit-conversion-in-loop,
 # performance-inefficient-vector-operation,
 # performance-move-const-arg,
+# performance-move-constructor-init,
 # performance-no-automatic-move,
-# ---
+# performance-trivially-destructible,
+# readability-avoid-nested-conditional-operator,
+# readability-avoid-return-with-void-value,
+# readability-braces-around-statements,
+# readability-const-return-type,
+# readability-container-contains,
+# readability-container-size-empty,
+# readability-convert-member-functions-to-static,
+# readability-duplicate-include,
+# readability-else-after-return,
+# readability-enum-initial-value,
+# readability-implicit-bool-conversion,
+# readability-inconsistent-declaration-parameter-name,
+# readability-identifier-naming,
+# readability-make-member-function-const,
+# readability-math-missing-parentheses,
+# readability-misleading-indentation,
+# readability-non-const-parameter,
+# readability-redundant-casting,
+# readability-redundant-declaration,
+# readability-redundant-inline-specifier,
+# readability-redundant-member-init,
+# readability-redundant-string-init,
+# readability-reference-to-constructed-temporary,
+# readability-simplify-boolean-expr,
+# readability-static-accessed-through-instance,
+# readability-static-definition-in-anonymous-namespace,
+# readability-suspicious-call-argument,
+# readability-use-std-min-max
 #
-CheckOptions:
-  #   readability-braces-around-statements.ShortStatementLines: 2
-  #   readability-identifier-naming.MacroDefinitionCase: UPPER_CASE
-  #   readability-identifier-naming.ClassCase: CamelCase
-  #   readability-identifier-naming.StructCase: CamelCase
-  #   readability-identifier-naming.UnionCase: CamelCase
-  #   readability-identifier-naming.EnumCase: CamelCase
-  #   readability-identifier-naming.EnumConstantCase: CamelCase
-  #   readability-identifier-naming.ScopedEnumConstantCase: CamelCase
-  #   readability-identifier-naming.GlobalConstantCase: UPPER_CASE
-  #   readability-identifier-naming.GlobalConstantPrefix: "k"
-  #   readability-identifier-naming.GlobalVariableCase: CamelCase
-  #   readability-identifier-naming.GlobalVariablePrefix: "g"
-  #   readability-identifier-naming.ConstexprFunctionCase: camelBack
-  #   readability-identifier-naming.ConstexprMethodCase: camelBack
-  #   readability-identifier-naming.ClassMethodCase: camelBack
-  #   readability-identifier-naming.ClassMemberCase: camelBack
-  #   readability-identifier-naming.ClassConstantCase: UPPER_CASE
-  #   readability-identifier-naming.ClassConstantPrefix: "k"
-  #   readability-identifier-naming.StaticConstantCase: UPPER_CASE
-  #   readability-identifier-naming.StaticConstantPrefix: "k"
-  #   readability-identifier-naming.StaticVariableCase: UPPER_CASE
-  #   readability-identifier-naming.StaticVariablePrefix: "k"
-  #   readability-identifier-naming.ConstexprVariableCase: UPPER_CASE
-  #   readability-identifier-naming.ConstexprVariablePrefix: "k"
-  #   readability-identifier-naming.LocalConstantCase: camelBack
-  #   readability-identifier-naming.LocalVariableCase: camelBack
-  #   readability-identifier-naming.TemplateParameterCase: CamelCase
-  #   readability-identifier-naming.ParameterCase: camelBack
-  #   readability-identifier-naming.FunctionCase: camelBack
-  #   readability-identifier-naming.MemberCase: camelBack
-  #   readability-identifier-naming.PrivateMemberSuffix: _
-  #   readability-identifier-naming.ProtectedMemberSuffix: _
-  #   readability-identifier-naming.PublicMemberSuffix: ""
-  #   readability-identifier-naming.FunctionIgnoredRegexp: ".*tag_invoke.*"
-  bugprone-unsafe-functions.ReportMoreUnsafeFunctions: true
+# CheckOptions:
+#   readability-braces-around-statements.ShortStatementLines: 2
+#   readability-identifier-naming.MacroDefinitionCase: UPPER_CASE
+#   readability-identifier-naming.ClassCase: CamelCase
+#   readability-identifier-naming.StructCase: CamelCase
+#   readability-identifier-naming.UnionCase: CamelCase
+#   readability-identifier-naming.EnumCase: CamelCase
+#   readability-identifier-naming.EnumConstantCase: CamelCase
+#   readability-identifier-naming.ScopedEnumConstantCase: CamelCase
+#   readability-identifier-naming.GlobalConstantCase: UPPER_CASE
+#   readability-identifier-naming.GlobalConstantPrefix: "k"
+#   readability-identifier-naming.GlobalVariableCase: CamelCase
+#   readability-identifier-naming.GlobalVariablePrefix: "g"
+#   readability-identifier-naming.ConstexprFunctionCase: camelBack
+#   readability-identifier-naming.ConstexprMethodCase: camelBack
+#   readability-identifier-naming.ClassMethodCase: camelBack
+#   readability-identifier-naming.ClassMemberCase: camelBack
+#   readability-identifier-naming.ClassConstantCase: UPPER_CASE
+#   readability-identifier-naming.ClassConstantPrefix: "k"
+#   readability-identifier-naming.StaticConstantCase: UPPER_CASE
+#   readability-identifier-naming.StaticConstantPrefix: "k"
+#   readability-identifier-naming.StaticVariableCase: UPPER_CASE
+#   readability-identifier-naming.StaticVariablePrefix: "k"
+#   readability-identifier-naming.ConstexprVariableCase: UPPER_CASE
+#   readability-identifier-naming.ConstexprVariablePrefix: "k"
+#   readability-identifier-naming.LocalConstantCase: camelBack
+#   readability-identifier-naming.LocalVariableCase: camelBack
+#   readability-identifier-naming.TemplateParameterCase: CamelCase
+#   readability-identifier-naming.ParameterCase: camelBack
+#   readability-identifier-naming.FunctionCase: camelBack
+#   readability-identifier-naming.MemberCase: camelBack
+#   readability-identifier-naming.PrivateMemberSuffix: _
+#   readability-identifier-naming.ProtectedMemberSuffix: _
+#   readability-identifier-naming.PublicMemberSuffix: ""
+#   readability-identifier-naming.FunctionIgnoredRegexp: ".*tag_invoke.*"
+#   bugprone-unsafe-functions.ReportMoreUnsafeFunctions: true
 #   bugprone-unused-return-value.CheckedReturnTypes: ::std::error_code;::std::error_condition;::std::errc
 #   misc-include-cleaner.IgnoreHeaders: '.*/(detail|impl)/.*;.*(expected|unexpected).*;.*ranges_lower_bound\.h;time.h;stdlib.h;__chrono/.*;fmt/chrono.h;boost/uuid/uuid_hash.hpp'
 #

.github/workflows/pre-commit.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   # Call the workflow in the XRPLF/actions repo that runs the pre-commit hooks.
   run-hooks:
-    uses: XRPLF/actions/.github/workflows/pre-commit.yml@56de1bdf19639e009639a50b8d17c28ca954f267
+    uses: XRPLF/actions/.github/workflows/pre-commit.yml@320be44621ca2a080f05aeb15817c44b84518108
     with:
       runs_on: ubuntu-latest
       container: '{ "image": "ghcr.io/xrplf/ci/tools-rippled-pre-commit:sha-41ec7c1" }'

.github/workflows/reusable-build-test-config.yml

@@ -101,7 +101,7 @@ jobs:
     steps:
       - name: Cleanup workspace (macOS and Windows)
         if: ${{ runner.os == 'macOS' || runner.os == 'Windows' }}
-        uses: XRPLF/actions/cleanup-workspace@c7d9ce5ebb03c752a354889ecd870cadfc2b1cd4
+        uses: XRPLF/actions/cleanup-workspace@cf0433aa74563aead044a1e395610c96d65a37cf
 
       - name: Checkout repository
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
@@ -229,21 +229,8 @@ jobs:
         env:
           BUILD_NPROC: ${{ steps.nproc.outputs.nproc }}
         run: |
-          set -o pipefail
-          ./xrpld --unittest --unittest-jobs "${BUILD_NPROC}" 2>&1 | tee unittest.log
+          ./xrpld --unittest --unittest-jobs "${BUILD_NPROC}"
 
-      - name: Show test failure summary
-        if: ${{ failure() && !inputs.build_only }}
-        working-directory: ${{ runner.os == 'Windows' && format('{0}/{1}', env.BUILD_DIR, inputs.build_type) || env.BUILD_DIR }}
-        run: |
-          if [ ! -f unittest.log ]; then
-            echo "unittest.log not found; embedded tests may not have run."
-            exit 0
-          fi
-
-          if ! grep -E "failed" unittest.log; then
-            echo "Log present but no failure lines found in unittest.log."
-          fi
       - name: Debug failure (Linux)
         if: ${{ failure() && runner.os == 'Linux' && !inputs.build_only }}
         run: |

.github/workflows/reusable-clang-tidy-files.yml

@@ -78,9 +78,9 @@ jobs:
         id: run_clang_tidy
         continue-on-error: true
         env:
-          TARGETS: ${{ inputs.files != '' && inputs.files || 'src tests' }}
+          FILES: ${{ inputs.files }}
         run: |
-          run-clang-tidy -j ${{ steps.nproc.outputs.nproc }} -p "${BUILD_DIR}" ${TARGETS} 2>&1 | tee clang-tidy-output.txt
+          run-clang-tidy -j ${{ steps.nproc.outputs.nproc }} -p "$BUILD_DIR" $FILES 2>&1 | tee clang-tidy-output.txt
 
       - name: Upload clang-tidy output
         if: steps.run_clang_tidy.outcome != 'success'

.github/workflows/reusable-clang-tidy.yml

@@ -22,8 +22,7 @@ jobs:
     if: ${{ inputs.check_only_changed }}
     runs-on: ubuntu-latest
     outputs:
-      clang_tidy_config_changed: ${{ steps.changed_clang_tidy.outputs.any_changed }}
-      any_cpp_changed: ${{ steps.changed_files.outputs.any_changed }}
+      any_changed: ${{ steps.changed_files.outputs.any_changed }}
       all_changed_files: ${{ steps.changed_files.outputs.all_changed_files }}
     steps:
       - name: Checkout repository
@@ -39,17 +38,10 @@ jobs:
             **/*.ipp
           separator: " "
 
-      - name: Get changed clang-tidy configuration
-        id: changed_clang_tidy
-        uses: tj-actions/changed-files@7dee1b0c1557f278e5c7dc244927139d78c0e22a # v47.0.4
-        with:
-          files: |
-            .clang-tidy
-
   run-clang-tidy:
     needs: [determine-files]
-    if: ${{ always() && !cancelled() && (!inputs.check_only_changed || needs.determine-files.outputs.any_cpp_changed == 'true' || needs.determine-files.outputs.clang_tidy_config_changed == 'true') }}
+    if: ${{ always() && !cancelled() && (!inputs.check_only_changed || needs.determine-files.outputs.any_changed == 'true') }}
     uses: ./.github/workflows/reusable-clang-tidy-files.yml
     with:
-      files: ${{ (needs.determine-files.outputs.clang_tidy_config_changed == 'true' && '') || (inputs.check_only_changed && needs.determine-files.outputs.all_changed_files || '') }}
+      files: ${{ inputs.check_only_changed && needs.determine-files.outputs.all_changed_files || '' }}
       create_issue_on_failure: ${{ inputs.create_issue_on_failure }}

.github/workflows/upload-conan-deps.yml

@@ -64,7 +64,7 @@ jobs:
     steps:
       - name: Cleanup workspace (macOS and Windows)
         if: ${{ runner.os == 'macOS' || runner.os == 'Windows' }}
-        uses: XRPLF/actions/cleanup-workspace@c7d9ce5ebb03c752a354889ecd870cadfc2b1cd4
+        uses: XRPLF/actions/cleanup-workspace@cf0433aa74563aead044a1e395610c96d65a37cf
 
       - name: Checkout repository
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

.pre-commit-config.yaml

@@ -61,15 +61,7 @@ repos:
     hooks:
       - id: nix-fmt
         name: Format Nix files
-        entry: |
-          bash -c '
-            if command -v nix &> /dev/null || [ "$GITHUB_ACTIONS" = "true" ]; then
-              nix --extra-experimental-features "nix-command flakes" fmt "$@"
-            else
-              echo "Skipping nix-fmt: nix not installed and not in GitHub Actions"
-              exit 0
-            fi
-          ' --
+        entry: nix --extra-experimental-features 'nix-command flakes' fmt
         language: system
         types:
           - nix

CONTRIBUTING.md

@@ -251,29 +251,6 @@ pip3 install pre-commit
 pre-commit install
 ```
 
-## Clang-tidy
-
-All code must pass `clang-tidy` checks according to the settings in [`.clang-tidy`](./.clang-tidy).
-
-There is a Continuous Integration job that runs clang-tidy on pull requests. The CI will check:
-
-- All changed C++ files (`.cpp`, `.h`, `.ipp`) when only code files are modified
-- **All files in the repository** when the `.clang-tidy` configuration file is changed
-
-This ensures that configuration changes don't introduce new warnings across the codebase.
-
-### Running clang-tidy locally
-
-Before running clang-tidy, you must build the project to generate required files (particularly protobuf headers). Refer to [`BUILD.md`](./BUILD.md) for build instructions.
-
-Then run clang-tidy on your local changes:
-
-```
-run-clang-tidy -p build src tests
-```
-
-This will check all source files in the `src` and `tests` directories using the compile commands from your `build` directory.
-
 ## Contracts and instrumentation
 
 We are using [Antithesis](https://antithesis.com/) for continuous fuzzing,

include/xrpl/basics/CanProcess.h

@@ -0,0 +1,139 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2024 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#ifndef RIPPLE_BASICS_CANPROCESS_H_INCLUDED
+#define RIPPLE_BASICS_CANPROCESS_H_INCLUDED
+
+#include <functional>
+#include <mutex>
+#include <set>
+
+/** RAII class to check if an Item is already being processed on another thread,
+ * as indicated by it's presence in a Collection.
+ *
+ * If the Item is not in the Collection, it will be added under lock in the
+ * ctor, and removed under lock in the dtor. The object will be considered
+ * "usable" and evaluate to `true`.
+ *
+ * If the Item is in the Collection, no changes will be made to the collection,
+ * and the CanProcess object will be considered "unusable".
+ *
+ * It's up to the caller to decide what "usable" and "unusable" mean. (e.g.
+ * Process or skip a block of code, or set a flag.)
+ *
+ * The current use is to avoid lock contention that would be involved in
+ * processing something associated with the Item.
+ *
+ * Examples:
+ *
+ * void IncomingLedgers::acquireAsync(LedgerHash const& hash, ...)
+ * {
+ *    if (CanProcess check{acquiresMutex_, pendingAcquires_, hash})
+ *    {
+ *      acquire(hash, ...);
+ *    }
+ * }
+ *
+ * bool
+ * NetworkOPsImp::recvValidation(
+ *   std::shared_ptr<STValidation> const& val,
+ *   std::string const& source)
+ *   {
+ *       CanProcess check(
+ *           validationsMutex_, pendingValidations_, val->getLedgerHash());
+ *       BypassAccept bypassAccept =
+ *           check ? BypassAccept::no : BypassAccept::yes;
+ *       handleNewValidation(app_, val, source, bypassAccept, m_journal);
+ *   }
+ *
+ */
+class CanProcess
+{
+public:
+    template <class Mutex, class Collection, class Item>
+    CanProcess(Mutex& mtx, Collection& collection, Item const& item)
+        : cleanup_(insert(mtx, collection, item))
+    {
+    }
+
+    ~CanProcess()
+    {
+        if (cleanup_)
+            cleanup_();
+    }
+
+    CanProcess(CanProcess const&) = delete;
+
+    CanProcess&
+    operator=(CanProcess const&) = delete;
+
+    explicit
+    operator bool() const
+    {
+        return static_cast<bool>(cleanup_);
+    }
+
+private:
+    template <bool useIterator, class Mutex, class Collection, class Item>
+    std::function<void()>
+    doInsert(Mutex& mtx, Collection& collection, Item const& item)
+    {
+        std::unique_lock<Mutex> lock(mtx);
+        // TODO: Use structured binding once LLVM 16 is the minimum supported
+        // version. See also: https://github.com/llvm/llvm-project/issues/48582
+        // https://github.com/llvm/llvm-project/commit/127bf44385424891eb04cff8e52d3f157fc2cb7c
+        auto const insertResult = collection.insert(item);
+        auto const it = insertResult.first;
+        if (!insertResult.second)
+            return {};
+        if constexpr (useIterator)
+            return [&, it]() {
+                std::unique_lock<Mutex> lock(mtx);
+                collection.erase(it);
+            };
+        else
+            return [&]() {
+                std::unique_lock<Mutex> lock(mtx);
+                collection.erase(item);
+            };
+    }
+
+    // Generic insert() function doesn't use iterators because they may get
+    // invalidated
+    template <class Mutex, class Collection, class Item>
+    std::function<void()>
+    insert(Mutex& mtx, Collection& collection, Item const& item)
+    {
+        return doInsert<false>(mtx, collection, item);
+    }
+
+    // Specialize insert() for std::set, which does not invalidate iterators for
+    // insert and erase
+    template <class Mutex, class Item>
+    std::function<void()>
+    insert(Mutex& mtx, std::set<Item>& collection, Item const& item)
+    {
+        return doInsert<true>(mtx, collection, item);
+    }
+
+    // If set, then the item is "usable"
+    std::function<void()> cleanup_;
+};
+
+#endif

include/xrpl/core/HashRouter.h

@@ -199,7 +199,7 @@ public:
 
     /** Add a suppression peer and get message's relay status.
      * Return pair:
-     * element 1: true if the peer is added.
+     * element 1: true if the key is added.
      * element 2: optional is seated to the relay time point or
      * is unseated if has not relayed yet. */
     std::pair<bool, std::optional<Stopwatch::time_point>>

include/xrpl/nodestore/Backend.h

@@ -77,16 +77,16 @@ public:
         If the object is not found or an error is encountered, the
         result will indicate the condition.
         @note This will be called concurrently.
-        @param hash The hash of the object.
+        @param key A pointer to the key data.
         @param pObject [out] The created object if successful.
         @return The result of the operation.
     */
     virtual Status
-    fetch(uint256 const& hash, std::shared_ptr<NodeObject>* pObject) = 0;
+    fetch(void const* key, std::shared_ptr<NodeObject>* pObject) = 0;
 
     /** Fetch a batch synchronously. */
     virtual std::pair<std::vector<std::shared_ptr<NodeObject>>, Status>
-    fetchBatch(std::vector<uint256> const& hashes) = 0;
+    fetchBatch(std::vector<uint256 const*> const& hashes) = 0;
 
     /** Store a single object.
         Depending on the implementation this may happen immediately

include/xrpl/protocol/LedgerHeader.h

@@ -35,6 +35,8 @@ struct LedgerHeader
 
     // If validated is false, it means "not yet validated."
     // Once validated is true, it will never be set false at a later time.
+    // NOTE: If you are accessing this directly, you are probably doing it
+    //   wrong. Use LedgerMaster::isValidated().
     // VFALCO TODO Make this not mutable
     bool mutable validated = false;
     bool accepted = false;

include/xrpl/server/NetworkOPs.h

@@ -185,7 +185,7 @@ public:
     virtual bool
     isFull() = 0;
     virtual void
-    setMode(OperatingMode om) = 0;
+    setMode(OperatingMode om, char const* reason) = 0;
     virtual bool
     isBlocked() = 0;
     virtual bool

include/xrpl/tx/InvariantCheck.h

@@ -0,0 +1,732 @@
+#pragma once
+
+#include <xrpl/basics/Number.h>
+#include <xrpl/basics/base_uint.h>
+#include <xrpl/beast/utility/Journal.h>
+#include <xrpl/protocol/MPTIssue.h>
+#include <xrpl/protocol/STLedgerEntry.h>
+#include <xrpl/protocol/STTx.h>
+#include <xrpl/protocol/TER.h>
+
+#include <cstdint>
+#include <tuple>
+#include <unordered_set>
+
+namespace xrpl {
+
+class ReadView;
+
+#if GENERATING_DOCS
+/**
+ * @brief Prototype for invariant check implementations.
+ *
+ * __THIS CLASS DOES NOT EXIST__ - or rather it exists in documentation only to
+ * communicate the interface required of any invariant checker. Any invariant
+ * check implementation should implement the public methods documented here.
+ *
+ */
+class InvariantChecker_PROTOTYPE
+{
+public:
+    explicit InvariantChecker_PROTOTYPE() = default;
+
+    /**
+     * @brief called for each ledger entry in the current transaction.
+     *
+     * @param isDelete true if the SLE is being deleted
+     * @param before ledger entry before modification by the transaction
+     * @param after ledger entry after modification by the transaction
+     */
+    void
+    visitEntry(
+        bool isDelete,
+        std::shared_ptr<SLE const> const& before,
+        std::shared_ptr<SLE const> const& after);
+
+    /**
+     * @brief called after all ledger entries have been visited to determine
+     * the final status of the check
+     *
+     * @param tx the transaction being applied
+     * @param tec the current TER result of the transaction
+     * @param fee the fee actually charged for this transaction
+     * @param view a ReadView of the ledger being modified
+     * @param j journal for logging
+     *
+     * @return true if check passes, false if it fails
+     */
+    bool
+    finalize(
+        STTx const& tx,
+        TER const tec,
+        XRPAmount const fee,
+        ReadView const& view,
+        beast::Journal const& j);
+};
+#endif
+
+/**
+ * @brief Invariant: We should never charge a transaction a negative fee or a
+ * fee that is larger than what the transaction itself specifies.
+ *
+ * We can, in some circumstances, charge less.
+ */
+class TransactionFeeCheck
+{
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: A transaction must not create XRP and should only destroy
+ * the XRP fee.
+ *
+ * We iterate through all account roots, payment channels and escrow entries
+ * that were modified and calculate the net change in XRP caused by the
+ * transactions.
+ */
+class XRPNotCreated
+{
+    std::int64_t drops_ = 0;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: we cannot remove an account ledger entry
+ *
+ * We iterate all account roots that were modified, and ensure that any that
+ * were present before the transaction was applied continue to be present
+ * afterwards unless they were explicitly deleted by a successful
+ * AccountDelete transaction.
+ */
+class AccountRootsNotDeleted
+{
+    std::uint32_t accountsDeleted_ = 0;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: a deleted account must not have any objects left
+ *
+ * We iterate all deleted account roots, and ensure that there are no
+ * objects left that are directly accessible with that account's ID.
+ *
+ * There should only be one deleted account, but that's checked by
+ * AccountRootsNotDeleted. This invariant will handle multiple deleted account
+ * roots without a problem.
+ */
+class AccountRootsDeletedClean
+{
+    // Pair is <before, after>. Before is used for most of the checks, so that
+    // if, for example, an object ID field is cleared, but the object is not
+    // deleted, it can still be found. After is used specifically for any checks
+    // that are expected as part of the deletion, such as zeroing out the
+    // balance.
+    std::vector<std::pair<std::shared_ptr<SLE const>, std::shared_ptr<SLE const>>> accountsDeleted_;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: An account XRP balance must be in XRP and take a value
+ *                   between 0 and INITIAL_XRP drops, inclusive.
+ *
+ * We iterate all account roots modified by the transaction and ensure that
+ * their XRP balances are reasonable.
+ */
+class XRPBalanceChecks
+{
+    bool bad_ = false;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: corresponding modified ledger entries should match in type
+ *                   and added entries should be a valid type.
+ */
+class LedgerEntryTypesMatch
+{
+    bool typeMismatch_ = false;
+    bool invalidTypeAdded_ = false;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: Trust lines using XRP are not allowed.
+ *
+ * We iterate all the trust lines created by this transaction and ensure
+ * that they are against a valid issuer.
+ */
+class NoXRPTrustLines
+{
+    bool xrpTrustLine_ = false;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: Trust lines with deep freeze flag are not allowed if normal
+ * freeze flag is not set.
+ *
+ * We iterate all the trust lines created by this transaction and ensure
+ * that they don't have deep freeze flag set without normal freeze flag set.
+ */
+class NoDeepFreezeTrustLinesWithoutFreeze
+{
+    bool deepFreezeWithoutFreeze_ = false;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: frozen trust line balance change is not allowed.
+ *
+ * We iterate all affected trust lines and ensure that they don't have
+ * unexpected change of balance if they're frozen.
+ */
+class TransfersNotFrozen
+{
+    struct BalanceChange
+    {
+        std::shared_ptr<SLE const> const line;
+        int const balanceChangeSign;
+    };
+
+    struct IssuerChanges
+    {
+        std::vector<BalanceChange> senders;
+        std::vector<BalanceChange> receivers;
+    };
+
+    using ByIssuer = std::map<Issue, IssuerChanges>;
+    ByIssuer balanceChanges_;
+
+    std::map<AccountID, std::shared_ptr<SLE const> const> possibleIssuers_;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+
+private:
+    bool
+    isValidEntry(std::shared_ptr<SLE const> const& before, std::shared_ptr<SLE const> const& after);
+
+    STAmount
+    calculateBalanceChange(
+        std::shared_ptr<SLE const> const& before,
+        std::shared_ptr<SLE const> const& after,
+        bool isDelete);
+
+    void
+    recordBalance(Issue const& issue, BalanceChange change);
+
+    void
+    recordBalanceChanges(std::shared_ptr<SLE const> const& after, STAmount const& balanceChange);
+
+    std::shared_ptr<SLE const>
+    findIssuer(AccountID const& issuerID, ReadView const& view);
+
+    bool
+    validateIssuerChanges(
+        std::shared_ptr<SLE const> const& issuer,
+        IssuerChanges const& changes,
+        STTx const& tx,
+        beast::Journal const& j,
+        bool enforce);
+
+    bool
+    validateFrozenState(
+        BalanceChange const& change,
+        bool high,
+        STTx const& tx,
+        beast::Journal const& j,
+        bool enforce,
+        bool globalFreeze);
+};
+
+/**
+ * @brief Invariant: offers should be for non-negative amounts and must not
+ *                   be XRP to XRP.
+ *
+ * Examine all offers modified by the transaction and ensure that there are
+ * no offers which contain negative amounts or which exchange XRP for XRP.
+ */
+class NoBadOffers
+{
+    bool bad_ = false;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: an escrow entry must take a value between 0 and
+ *                   INITIAL_XRP drops exclusive.
+ */
+class NoZeroEscrow
+{
+    bool bad_ = false;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: a new account root must be the consequence of a payment,
+ *                   must have the right starting sequence, and the payment
+ *                   may not create more than one new account root.
+ */
+class ValidNewAccountRoot
+{
+    std::uint32_t accountsCreated_ = 0;
+    std::uint32_t accountSeq_ = 0;
+    bool pseudoAccount_ = false;
+    std::uint32_t flags_ = 0;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: Validates several invariants for NFToken pages.
+ *
+ * The following checks are made:
+ *  - The page is correctly associated with the owner.
+ *  - The page is correctly ordered between the next and previous links.
+ *  - The page contains at least one and no more than 32 NFTokens.
+ *  - The NFTokens on this page do not belong on a lower or higher page.
+ *  - The NFTokens are correctly sorted on the page.
+ *  - Each URI, if present, is not empty.
+ */
+class ValidNFTokenPage
+{
+    bool badEntry_ = false;
+    bool badLink_ = false;
+    bool badSort_ = false;
+    bool badURI_ = false;
+    bool invalidSize_ = false;
+    bool deletedFinalPage_ = false;
+    bool deletedLink_ = false;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: Validates counts of NFTokens after all transaction types.
+ *
+ * The following checks are made:
+ *  - The number of minted or burned NFTokens can only be changed by
+ *    NFTokenMint or NFTokenBurn transactions.
+ *  - A successful NFTokenMint must increase the number of NFTokens.
+ *  - A failed NFTokenMint must not change the number of minted NFTokens.
+ *  - An NFTokenMint transaction cannot change the number of burned NFTokens.
+ *  - A successful NFTokenBurn must increase the number of burned NFTokens.
+ *  - A failed NFTokenBurn must not change the number of burned NFTokens.
+ *  - An NFTokenBurn transaction cannot change the number of minted NFTokens.
+ */
+class NFTokenCountTracking
+{
+    std::uint32_t beforeMintedTotal = 0;
+    std::uint32_t beforeBurnedTotal = 0;
+    std::uint32_t afterMintedTotal = 0;
+    std::uint32_t afterBurnedTotal = 0;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariant: Token holder's trustline balance cannot be negative after
+ * Clawback.
+ *
+ * We iterate all the trust lines affected by this transaction and ensure
+ * that no more than one trustline is modified, and also holder's balance is
+ * non-negative.
+ */
+class ValidClawback
+{
+    std::uint32_t trustlinesChanged = 0;
+    std::uint32_t mptokensChanged = 0;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+class ValidMPTIssuance
+{
+    std::uint32_t mptIssuancesCreated_ = 0;
+    std::uint32_t mptIssuancesDeleted_ = 0;
+
+    std::uint32_t mptokensCreated_ = 0;
+    std::uint32_t mptokensDeleted_ = 0;
+    // non-MPT transactions may attempt to create
+    // MPToken by an issuer
+    bool mptCreatedByIssuer_ = false;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariants: Permissioned Domains must have some rules and
+ * AcceptedCredentials must have length between 1 and 10 inclusive.
+ *
+ * Since only permissions constitute rules, an empty credentials list
+ * means that there are no rules and the invariant is violated.
+ *
+ * Credentials must be sorted and no duplicates allowed
+ *
+ */
+class ValidPermissionedDomain
+{
+    struct SleStatus
+    {
+        std::size_t credentialsSize_{0};
+        bool isSorted_ = false;
+        bool isUnique_ = false;
+        bool isDelete_ = false;
+    };
+    std::vector<SleStatus> sleStatus_;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariants: Pseudo-accounts have valid and consistent properties
+ *
+ * Pseudo-accounts have certain properties, and some of those properties are
+ * unique to pseudo-accounts. Check that all pseudo-accounts are following the
+ * rules, and that only pseudo-accounts look like pseudo-accounts.
+ *
+ */
+class ValidPseudoAccounts
+{
+    std::vector<std::string> errors_;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+class ValidPermissionedDEX
+{
+    bool regularOffers_ = false;
+    bool badHybrids_ = false;
+    hash_set<uint256> domains_;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+class ValidAMM
+{
+    std::optional<AccountID> ammAccount_;
+    std::optional<STAmount> lptAMMBalanceAfter_;
+    std::optional<STAmount> lptAMMBalanceBefore_;
+    bool ammPoolChanged_;
+
+public:
+    enum class ZeroAllowed : bool { No = false, Yes = true };
+
+    ValidAMM() : ammPoolChanged_{false}
+    {
+    }
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+
+private:
+    bool
+    finalizeBid(bool enforce, beast::Journal const&) const;
+    bool
+    finalizeVote(bool enforce, beast::Journal const&) const;
+    bool
+    finalizeCreate(STTx const&, ReadView const&, bool enforce, beast::Journal const&) const;
+    bool
+    finalizeDelete(bool enforce, TER res, beast::Journal const&) const;
+    bool
+    finalizeDeposit(STTx const&, ReadView const&, bool enforce, beast::Journal const&) const;
+    // Includes clawback
+    bool
+    finalizeWithdraw(STTx const&, ReadView const&, bool enforce, beast::Journal const&) const;
+    bool
+    finalizeDEX(bool enforce, beast::Journal const&) const;
+    bool
+    generalInvariant(STTx const&, ReadView const&, ZeroAllowed zeroAllowed, beast::Journal const&)
+        const;
+};
+
+/**
+ * @brief Invariants: Some fields are unmodifiable
+ *
+ * Check that any fields specified as unmodifiable are not modified when the
+ * object is modified. Creation and deletion are ignored.
+ *
+ */
+class NoModifiedUnmodifiableFields
+{
+    // Pair is <before, after>.
+    std::set<std::pair<SLE::const_pointer, SLE::const_pointer>> changedEntries_;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariants: Loan brokers are internally consistent
+ *
+ * 1. If `LoanBroker.OwnerCount = 0` the `DirectoryNode` will have at most one
+ *    node (the root), which will only hold entries for `RippleState` or
+ * `MPToken` objects.
+ *
+ */
+class ValidLoanBroker
+{
+    // Not all of these elements will necessarily be populated. Remaining items
+    // will be looked up as needed.
+    struct BrokerInfo
+    {
+        SLE::const_pointer brokerBefore = nullptr;
+        // After is used for most of the checks, except
+        // those that check changed values.
+        SLE::const_pointer brokerAfter = nullptr;
+    };
+    // Collect all the LoanBrokers found directly or indirectly through
+    // pseudo-accounts. Key is the brokerID / index. It will be used to find the
+    // LoanBroker object if brokerBefore and brokerAfter are nullptr
+    std::map<uint256, BrokerInfo> brokers_;
+    // Collect all the modified trust lines. Their high and low accounts will be
+    // loaded to look for LoanBroker pseudo-accounts.
+    std::vector<SLE::const_pointer> lines_;
+    // Collect all the modified MPTokens. Their accounts will be loaded to look
+    // for LoanBroker pseudo-accounts.
+    std::vector<SLE::const_pointer> mpts_;
+
+    bool
+    goodZeroDirectory(ReadView const& view, SLE::const_ref dir, beast::Journal const& j) const;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/**
+ * @brief Invariants: Loans are internally consistent
+ *
+ * 1. If `Loan.PaymentRemaining = 0` then `Loan.PrincipalOutstanding = 0`
+ *
+ */
+class ValidLoan
+{
+    // Pair is <before, after>. After is used for most of the checks, except
+    // those that check changed values.
+    std::vector<std::pair<SLE::const_pointer, SLE::const_pointer>> loans_;
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+/*
+ * @brief Invariants: Vault object and MPTokenIssuance for vault shares
+ *
+ * - vault deleted and vault created is empty
+ * - vault created must be linked to pseudo-account for shares and assets
+ * - vault must have MPTokenIssuance for shares
+ * - vault without shares outstanding must have no shares
+ * - loss unrealized does not exceed the difference between assets total and
+ *   assets available
+ * - assets available do not exceed assets total
+ * - vault deposit increases assets and share issuance, and adds to:
+ *   total assets, assets available, shares outstanding
+ * - vault withdrawal and clawback reduce assets and share issuance, and
+ *   subtracts from: total assets, assets available, shares outstanding
+ * - vault set must not alter the vault assets or shares balance
+ * - no vault transaction can change loss unrealized (it's updated by loan
+ *   transactions)
+ *
+ */
+class ValidVault
+{
+    Number static constexpr zero{};
+
+    struct Vault final
+    {
+        uint256 key = beast::zero;
+        Asset asset = {};
+        AccountID pseudoId = {};
+        AccountID owner = {};
+        uint192 shareMPTID = beast::zero;
+        Number assetsTotal = 0;
+        Number assetsAvailable = 0;
+        Number assetsMaximum = 0;
+        Number lossUnrealized = 0;
+
+        Vault static make(SLE const&);
+    };
+
+    struct Shares final
+    {
+        MPTIssue share = {};
+        std::uint64_t sharesTotal = 0;
+        std::uint64_t sharesMaximum = 0;
+
+        Shares static make(SLE const&);
+    };
+
+    std::vector<Vault> afterVault_ = {};
+    std::vector<Shares> afterMPTs_ = {};
+    std::vector<Vault> beforeVault_ = {};
+    std::vector<Shares> beforeMPTs_ = {};
+    std::unordered_map<uint256, Number> deltas_ = {};
+
+public:
+    void
+    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
+
+    bool
+    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
+};
+
+// additional invariant checks can be declared above and then added to this
+// tuple
+using InvariantChecks = std::tuple<
+    TransactionFeeCheck,
+    AccountRootsNotDeleted,
+    AccountRootsDeletedClean,
+    LedgerEntryTypesMatch,
+    XRPBalanceChecks,
+    XRPNotCreated,
+    NoXRPTrustLines,
+    NoDeepFreezeTrustLinesWithoutFreeze,
+    TransfersNotFrozen,
+    NoBadOffers,
+    NoZeroEscrow,
+    ValidNewAccountRoot,
+    ValidNFTokenPage,
+    NFTokenCountTracking,
+    ValidClawback,
+    ValidMPTIssuance,
+    ValidPermissionedDomain,
+    ValidPermissionedDEX,
+    ValidAMM,
+    NoModifiedUnmodifiableFields,
+    ValidPseudoAccounts,
+    ValidLoanBroker,
+    ValidLoan,
+    ValidVault>;
+
+/**
+ * @brief get a tuple of all invariant checks
+ *
+ * @return std::tuple of instances that implement the required invariant check
+ * methods
+ *
+ * @see xrpl::InvariantChecker_PROTOTYPE
+ */
+inline InvariantChecks
+getInvariantChecks()
+{
+    return InvariantChecks{};
+}
+
+}  // namespace xrpl

include/xrpl/tx/invariants/AMMInvariant.h

@@ -1,53 +0,0 @@
-#pragma once
-
-#include <xrpl/beast/utility/Journal.h>
-#include <xrpl/ledger/ReadView.h>
-#include <xrpl/protocol/STAmount.h>
-#include <xrpl/protocol/STTx.h>
-#include <xrpl/protocol/TER.h>
-
-#include <optional>
-
-namespace xrpl {
-
-class ValidAMM
-{
-    std::optional<AccountID> ammAccount_;
-    std::optional<STAmount> lptAMMBalanceAfter_;
-    std::optional<STAmount> lptAMMBalanceBefore_;
-    bool ammPoolChanged_;
-
-public:
-    enum class ZeroAllowed : bool { No = false, Yes = true };
-
-    ValidAMM() : ammPoolChanged_{false}
-    {
-    }
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-
-private:
-    bool
-    finalizeBid(bool enforce, beast::Journal const&) const;
-    bool
-    finalizeVote(bool enforce, beast::Journal const&) const;
-    bool
-    finalizeCreate(STTx const&, ReadView const&, bool enforce, beast::Journal const&) const;
-    bool
-    finalizeDelete(bool enforce, TER res, beast::Journal const&) const;
-    bool
-    finalizeDeposit(STTx const&, ReadView const&, bool enforce, beast::Journal const&) const;
-    // Includes clawback
-    bool
-    finalizeWithdraw(STTx const&, ReadView const&, bool enforce, beast::Journal const&) const;
-    bool
-    finalizeDEX(bool enforce, beast::Journal const&) const;
-    bool
-    generalInvariant(STTx const&, ReadView const&, ZeroAllowed zeroAllowed, beast::Journal const&)
-        const;
-};
-
-}  // namespace xrpl

include/xrpl/tx/invariants/FreezeInvariant.h

@@ -1,84 +0,0 @@
-#pragma once
-
-#include <xrpl/beast/utility/Journal.h>
-#include <xrpl/ledger/ReadView.h>
-#include <xrpl/protocol/Issue.h>
-#include <xrpl/protocol/STAmount.h>
-#include <xrpl/protocol/STTx.h>
-#include <xrpl/protocol/TER.h>
-
-#include <map>
-#include <vector>
-
-namespace xrpl {
-
-/**
- * @brief Invariant: frozen trust line balance change is not allowed.
- *
- * We iterate all affected trust lines and ensure that they don't have
- * unexpected change of balance if they're frozen.
- */
-class TransfersNotFrozen
-{
-    struct BalanceChange
-    {
-        std::shared_ptr<SLE const> const line;
-        int const balanceChangeSign;
-    };
-
-    struct IssuerChanges
-    {
-        std::vector<BalanceChange> senders;
-        std::vector<BalanceChange> receivers;
-    };
-
-    using ByIssuer = std::map<Issue, IssuerChanges>;
-    ByIssuer balanceChanges_;
-
-    std::map<AccountID, std::shared_ptr<SLE const> const> possibleIssuers_;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-
-private:
-    bool
-    isValidEntry(std::shared_ptr<SLE const> const& before, std::shared_ptr<SLE const> const& after);
-
-    STAmount
-    calculateBalanceChange(
-        std::shared_ptr<SLE const> const& before,
-        std::shared_ptr<SLE const> const& after,
-        bool isDelete);
-
-    void
-    recordBalance(Issue const& issue, BalanceChange change);
-
-    void
-    recordBalanceChanges(std::shared_ptr<SLE const> const& after, STAmount const& balanceChange);
-
-    std::shared_ptr<SLE const>
-    findIssuer(AccountID const& issuerID, ReadView const& view);
-
-    bool
-    validateIssuerChanges(
-        std::shared_ptr<SLE const> const& issuer,
-        IssuerChanges const& changes,
-        STTx const& tx,
-        beast::Journal const& j,
-        bool enforce);
-
-    bool
-    validateFrozenState(
-        BalanceChange const& change,
-        bool high,
-        STTx const& tx,
-        beast::Journal const& j,
-        bool enforce,
-        bool globalFreeze);
-};
-
-}  // namespace xrpl

include/xrpl/tx/invariants/InvariantCheck.h

@@ -1,385 +0,0 @@
-#pragma once
-
-#include <xrpl/basics/base_uint.h>
-#include <xrpl/beast/utility/Journal.h>
-#include <xrpl/ledger/ReadView.h>
-#include <xrpl/protocol/STTx.h>
-#include <xrpl/protocol/TER.h>
-#include <xrpl/tx/invariants/AMMInvariant.h>
-#include <xrpl/tx/invariants/FreezeInvariant.h>
-#include <xrpl/tx/invariants/LoanInvariant.h>
-#include <xrpl/tx/invariants/MPTInvariant.h>
-#include <xrpl/tx/invariants/NFTInvariant.h>
-#include <xrpl/tx/invariants/PermissionedDEXInvariant.h>
-#include <xrpl/tx/invariants/PermissionedDomainInvariant.h>
-#include <xrpl/tx/invariants/VaultInvariant.h>
-
-#include <cstdint>
-#include <tuple>
-
-namespace xrpl {
-
-#if GENERATING_DOCS
-/**
- * @brief Prototype for invariant check implementations.
- *
- * __THIS CLASS DOES NOT EXIST__ - or rather it exists in documentation only to
- * communicate the interface required of any invariant checker. Any invariant
- * check implementation should implement the public methods documented here.
- *
- */
-class InvariantChecker_PROTOTYPE
-{
-public:
-    explicit InvariantChecker_PROTOTYPE() = default;
-
-    /**
-     * @brief called for each ledger entry in the current transaction.
-     *
-     * @param isDelete true if the SLE is being deleted
-     * @param before ledger entry before modification by the transaction
-     * @param after ledger entry after modification by the transaction
-     */
-    void
-    visitEntry(
-        bool isDelete,
-        std::shared_ptr<SLE const> const& before,
-        std::shared_ptr<SLE const> const& after);
-
-    /**
-     * @brief called after all ledger entries have been visited to determine
-     * the final status of the check
-     *
-     * @param tx the transaction being applied
-     * @param tec the current TER result of the transaction
-     * @param fee the fee actually charged for this transaction
-     * @param view a ReadView of the ledger being modified
-     * @param j journal for logging
-     *
-     * @return true if check passes, false if it fails
-     */
-    bool
-    finalize(
-        STTx const& tx,
-        TER const tec,
-        XRPAmount const fee,
-        ReadView const& view,
-        beast::Journal const& j);
-};
-#endif
-
-/**
- * @brief Invariant: We should never charge a transaction a negative fee or a
- * fee that is larger than what the transaction itself specifies.
- *
- * We can, in some circumstances, charge less.
- */
-class TransactionFeeCheck
-{
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariant: A transaction must not create XRP and should only destroy
- * the XRP fee.
- *
- * We iterate through all account roots, payment channels and escrow entries
- * that were modified and calculate the net change in XRP caused by the
- * transactions.
- */
-class XRPNotCreated
-{
-    std::int64_t drops_ = 0;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariant: we cannot remove an account ledger entry
- *
- * We iterate all account roots that were modified, and ensure that any that
- * were present before the transaction was applied continue to be present
- * afterwards unless they were explicitly deleted by a successful
- * AccountDelete transaction.
- */
-class AccountRootsNotDeleted
-{
-    std::uint32_t accountsDeleted_ = 0;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariant: a deleted account must not have any objects left
- *
- * We iterate all deleted account roots, and ensure that there are no
- * objects left that are directly accessible with that account's ID.
- *
- * There should only be one deleted account, but that's checked by
- * AccountRootsNotDeleted. This invariant will handle multiple deleted account
- * roots without a problem.
- */
-class AccountRootsDeletedClean
-{
-    // Pair is <before, after>. Before is used for most of the checks, so that
-    // if, for example, an object ID field is cleared, but the object is not
-    // deleted, it can still be found. After is used specifically for any checks
-    // that are expected as part of the deletion, such as zeroing out the
-    // balance.
-    std::vector<std::pair<std::shared_ptr<SLE const>, std::shared_ptr<SLE const>>> accountsDeleted_;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariant: An account XRP balance must be in XRP and take a value
- *                   between 0 and INITIAL_XRP drops, inclusive.
- *
- * We iterate all account roots modified by the transaction and ensure that
- * their XRP balances are reasonable.
- */
-class XRPBalanceChecks
-{
-    bool bad_ = false;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariant: corresponding modified ledger entries should match in type
- *                   and added entries should be a valid type.
- */
-class LedgerEntryTypesMatch
-{
-    bool typeMismatch_ = false;
-    bool invalidTypeAdded_ = false;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariant: Trust lines using XRP are not allowed.
- *
- * We iterate all the trust lines created by this transaction and ensure
- * that they are against a valid issuer.
- */
-class NoXRPTrustLines
-{
-    bool xrpTrustLine_ = false;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariant: Trust lines with deep freeze flag are not allowed if normal
- * freeze flag is not set.
- *
- * We iterate all the trust lines created by this transaction and ensure
- * that they don't have deep freeze flag set without normal freeze flag set.
- */
-class NoDeepFreezeTrustLinesWithoutFreeze
-{
-    bool deepFreezeWithoutFreeze_ = false;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariant: offers should be for non-negative amounts and must not
- *                   be XRP to XRP.
- *
- * Examine all offers modified by the transaction and ensure that there are
- * no offers which contain negative amounts or which exchange XRP for XRP.
- */
-class NoBadOffers
-{
-    bool bad_ = false;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariant: an escrow entry must take a value between 0 and
- *                   INITIAL_XRP drops exclusive.
- */
-class NoZeroEscrow
-{
-    bool bad_ = false;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariant: a new account root must be the consequence of a payment,
- *                   must have the right starting sequence, and the payment
- *                   may not create more than one new account root.
- */
-class ValidNewAccountRoot
-{
-    std::uint32_t accountsCreated_ = 0;
-    std::uint32_t accountSeq_ = 0;
-    bool pseudoAccount_ = false;
-    std::uint32_t flags_ = 0;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariant: Token holder's trustline balance cannot be negative after
- * Clawback.
- *
- * We iterate all the trust lines affected by this transaction and ensure
- * that no more than one trustline is modified, and also holder's balance is
- * non-negative.
- */
-class ValidClawback
-{
-    std::uint32_t trustlinesChanged = 0;
-    std::uint32_t mptokensChanged = 0;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariants: Pseudo-accounts have valid and consistent properties
- *
- * Pseudo-accounts have certain properties, and some of those properties are
- * unique to pseudo-accounts. Check that all pseudo-accounts are following the
- * rules, and that only pseudo-accounts look like pseudo-accounts.
- *
- */
-class ValidPseudoAccounts
-{
-    std::vector<std::string> errors_;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariants: Some fields are unmodifiable
- *
- * Check that any fields specified as unmodifiable are not modified when the
- * object is modified. Creation and deletion are ignored.
- *
- */
-class NoModifiedUnmodifiableFields
-{
-    // Pair is <before, after>.
-    std::set<std::pair<SLE::const_pointer, SLE::const_pointer>> changedEntries_;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-// additional invariant checks can be declared above and then added to this
-// tuple
-using InvariantChecks = std::tuple<
-    TransactionFeeCheck,
-    AccountRootsNotDeleted,
-    AccountRootsDeletedClean,
-    LedgerEntryTypesMatch,
-    XRPBalanceChecks,
-    XRPNotCreated,
-    NoXRPTrustLines,
-    NoDeepFreezeTrustLinesWithoutFreeze,
-    TransfersNotFrozen,
-    NoBadOffers,
-    NoZeroEscrow,
-    ValidNewAccountRoot,
-    ValidNFTokenPage,
-    NFTokenCountTracking,
-    ValidClawback,
-    ValidMPTIssuance,
-    ValidPermissionedDomain,
-    ValidPermissionedDEX,
-    ValidAMM,
-    NoModifiedUnmodifiableFields,
-    ValidPseudoAccounts,
-    ValidLoanBroker,
-    ValidLoan,
-    ValidVault>;
-
-/**
- * @brief get a tuple of all invariant checks
- *
- * @return std::tuple of instances that implement the required invariant check
- * methods
- *
- * @see xrpl::InvariantChecker_PROTOTYPE
- */
-inline InvariantChecks
-getInvariantChecks()
-{
-    return InvariantChecks{};
-}
-
-}  // namespace xrpl

include/xrpl/tx/invariants/InvariantCheckPrivilege.h

@@ -1,60 +0,0 @@
-#pragma once
-
-#include <xrpl/protocol/STTx.h>
-
-#include <type_traits>
-
-namespace xrpl {
-
-/*
-assert(enforce)
-
-There are several asserts (or XRPL_ASSERTs) in invariant check files that check
-a variable named `enforce` when an invariant fails. At first glance, those
-asserts may look incorrect, but they are not.
-
-Those asserts take advantage of two facts:
-1. `asserts` are not (normally) executed in release builds.
-2. Invariants should *never* fail, except in tests that specifically modify
-   the open ledger to break them.
-
-This makes `assert(enforce)` sort of a second-layer of invariant enforcement
-aimed at _developers_. It's designed to fire if a developer writes code that
-violates an invariant, and runs it in unit tests or a develop build that _does
-not have the relevant amendments enabled_. It's intentionally a pain in the neck
-so that bad code gets caught and fixed as early as possible.
-*/
-
-enum Privilege {
-    noPriv = 0x0000,              // The transaction can not do any of the enumerated operations
-    createAcct = 0x0001,          // The transaction can create a new ACCOUNT_ROOT object.
-    createPseudoAcct = 0x0002,    // The transaction can create a pseudo account,
-                                  // which implies createAcct
-    mustDeleteAcct = 0x0004,      // The transaction must delete an ACCOUNT_ROOT object
-    mayDeleteAcct = 0x0008,       // The transaction may delete an ACCOUNT_ROOT
-                                  // object, but does not have to
-    overrideFreeze = 0x0010,      // The transaction can override some freeze rules
-    changeNFTCounts = 0x0020,     // The transaction can mint or burn an NFT
-    createMPTIssuance = 0x0040,   // The transaction can create a new MPT issuance
-    destroyMPTIssuance = 0x0080,  // The transaction can destroy an MPT issuance
-    mustAuthorizeMPT = 0x0100,    // The transaction MUST create or delete an MPT
-                                  // object (except by issuer)
-    mayAuthorizeMPT = 0x0200,     // The transaction MAY create or delete an MPT
-                                  // object (except by issuer)
-    mayDeleteMPT = 0x0400,        // The transaction MAY delete an MPT object. May not create.
-    mustModifyVault = 0x0800,     // The transaction must modify, delete or create, a vault
-    mayModifyVault = 0x1000,      // The transaction MAY modify, delete or create, a vault
-};
-
-constexpr Privilege
-operator|(Privilege lhs, Privilege rhs)
-{
-    return safe_cast<Privilege>(
-        safe_cast<std::underlying_type_t<Privilege>>(lhs) |
-        safe_cast<std::underlying_type_t<Privilege>>(rhs));
-}
-
-bool
-hasPrivilege(STTx const& tx, Privilege priv);
-
-}  // namespace xrpl

include/xrpl/tx/invariants/LoanInvariant.h

@@ -1,75 +0,0 @@
-#pragma once
-
-#include <xrpl/basics/base_uint.h>
-#include <xrpl/beast/utility/Journal.h>
-#include <xrpl/ledger/ReadView.h>
-#include <xrpl/protocol/STTx.h>
-#include <xrpl/protocol/TER.h>
-
-#include <map>
-#include <vector>
-
-namespace xrpl {
-
-/**
- * @brief Invariants: Loan brokers are internally consistent
- *
- * 1. If `LoanBroker.OwnerCount = 0` the `DirectoryNode` will have at most one
- *    node (the root), which will only hold entries for `RippleState` or
- * `MPToken` objects.
- *
- */
-class ValidLoanBroker
-{
-    // Not all of these elements will necessarily be populated. Remaining items
-    // will be looked up as needed.
-    struct BrokerInfo
-    {
-        SLE::const_pointer brokerBefore = nullptr;
-        // After is used for most of the checks, except
-        // those that check changed values.
-        SLE::const_pointer brokerAfter = nullptr;
-    };
-    // Collect all the LoanBrokers found directly or indirectly through
-    // pseudo-accounts. Key is the brokerID / index. It will be used to find the
-    // LoanBroker object if brokerBefore and brokerAfter are nullptr
-    std::map<uint256, BrokerInfo> brokers_;
-    // Collect all the modified trust lines. Their high and low accounts will be
-    // loaded to look for LoanBroker pseudo-accounts.
-    std::vector<SLE::const_pointer> lines_;
-    // Collect all the modified MPTokens. Their accounts will be loaded to look
-    // for LoanBroker pseudo-accounts.
-    std::vector<SLE::const_pointer> mpts_;
-
-    bool
-    goodZeroDirectory(ReadView const& view, SLE::const_ref dir, beast::Journal const& j) const;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariants: Loans are internally consistent
- *
- * 1. If `Loan.PaymentRemaining = 0` then `Loan.PrincipalOutstanding = 0`
- *
- */
-class ValidLoan
-{
-    // Pair is <before, after>. After is used for most of the checks, except
-    // those that check changed values.
-    std::vector<std::pair<SLE::const_pointer, SLE::const_pointer>> loans_;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-}  // namespace xrpl

include/xrpl/tx/invariants/MPTInvariant.h

@@ -1,31 +0,0 @@
-#pragma once
-
-#include <xrpl/beast/utility/Journal.h>
-#include <xrpl/ledger/ReadView.h>
-#include <xrpl/protocol/STTx.h>
-#include <xrpl/protocol/TER.h>
-
-#include <cstdint>
-
-namespace xrpl {
-
-class ValidMPTIssuance
-{
-    std::uint32_t mptIssuancesCreated_ = 0;
-    std::uint32_t mptIssuancesDeleted_ = 0;
-
-    std::uint32_t mptokensCreated_ = 0;
-    std::uint32_t mptokensDeleted_ = 0;
-    // non-MPT transactions may attempt to create
-    // MPToken by an issuer
-    bool mptCreatedByIssuer_ = false;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-}  // namespace xrpl

include/xrpl/tx/invariants/NFTInvariant.h

@@ -1,70 +0,0 @@
-#pragma once
-
-#include <xrpl/basics/base_uint.h>
-#include <xrpl/beast/utility/Journal.h>
-#include <xrpl/ledger/ReadView.h>
-#include <xrpl/protocol/STTx.h>
-#include <xrpl/protocol/TER.h>
-
-#include <cstdint>
-
-namespace xrpl {
-
-/**
- * @brief Invariant: Validates several invariants for NFToken pages.
- *
- * The following checks are made:
- *  - The page is correctly associated with the owner.
- *  - The page is correctly ordered between the next and previous links.
- *  - The page contains at least one and no more than 32 NFTokens.
- *  - The NFTokens on this page do not belong on a lower or higher page.
- *  - The NFTokens are correctly sorted on the page.
- *  - Each URI, if present, is not empty.
- */
-class ValidNFTokenPage
-{
-    bool badEntry_ = false;
-    bool badLink_ = false;
-    bool badSort_ = false;
-    bool badURI_ = false;
-    bool invalidSize_ = false;
-    bool deletedFinalPage_ = false;
-    bool deletedLink_ = false;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-/**
- * @brief Invariant: Validates counts of NFTokens after all transaction types.
- *
- * The following checks are made:
- *  - The number of minted or burned NFTokens can only be changed by
- *    NFTokenMint or NFTokenBurn transactions.
- *  - A successful NFTokenMint must increase the number of NFTokens.
- *  - A failed NFTokenMint must not change the number of minted NFTokens.
- *  - An NFTokenMint transaction cannot change the number of burned NFTokens.
- *  - A successful NFTokenBurn must increase the number of burned NFTokens.
- *  - A failed NFTokenBurn must not change the number of burned NFTokens.
- *  - An NFTokenBurn transaction cannot change the number of minted NFTokens.
- */
-class NFTokenCountTracking
-{
-    std::uint32_t beforeMintedTotal = 0;
-    std::uint32_t beforeBurnedTotal = 0;
-    std::uint32_t afterMintedTotal = 0;
-    std::uint32_t afterBurnedTotal = 0;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-}  // namespace xrpl

include/xrpl/tx/invariants/PermissionedDEXInvariant.h

@@ -1,25 +0,0 @@
-#pragma once
-
-#include <xrpl/basics/base_uint.h>
-#include <xrpl/beast/utility/Journal.h>
-#include <xrpl/ledger/ReadView.h>
-#include <xrpl/protocol/STTx.h>
-#include <xrpl/protocol/TER.h>
-
-namespace xrpl {
-
-class ValidPermissionedDEX
-{
-    bool regularOffers_ = false;
-    bool badHybrids_ = false;
-    hash_set<uint256> domains_;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-}  // namespace xrpl

include/xrpl/tx/invariants/PermissionedDomainInvariant.h

@@ -1,41 +0,0 @@
-#pragma once
-
-#include <xrpl/beast/utility/Journal.h>
-#include <xrpl/ledger/ReadView.h>
-#include <xrpl/protocol/STTx.h>
-#include <xrpl/protocol/TER.h>
-
-#include <vector>
-
-namespace xrpl {
-
-/**
- * @brief Invariants: Permissioned Domains must have some rules and
- * AcceptedCredentials must have length between 1 and 10 inclusive.
- *
- * Since only permissions constitute rules, an empty credentials list
- * means that there are no rules and the invariant is violated.
- *
- * Credentials must be sorted and no duplicates allowed
- *
- */
-class ValidPermissionedDomain
-{
-    struct SleStatus
-    {
-        std::size_t credentialsSize_{0};
-        bool isSorted_ = false;
-        bool isUnique_ = false;
-        bool isDelete_ = false;
-    };
-    std::vector<SleStatus> sleStatus_;
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-}  // namespace xrpl

include/xrpl/tx/invariants/VaultInvariant.h

@@ -1,77 +0,0 @@
-#pragma once
-
-#include <xrpl/basics/Number.h>
-#include <xrpl/basics/base_uint.h>
-#include <xrpl/beast/utility/Journal.h>
-#include <xrpl/ledger/ReadView.h>
-#include <xrpl/protocol/MPTIssue.h>
-#include <xrpl/protocol/STTx.h>
-#include <xrpl/protocol/TER.h>
-
-#include <unordered_map>
-#include <vector>
-
-namespace xrpl {
-
-/*
- * @brief Invariants: Vault object and MPTokenIssuance for vault shares
- *
- * - vault deleted and vault created is empty
- * - vault created must be linked to pseudo-account for shares and assets
- * - vault must have MPTokenIssuance for shares
- * - vault without shares outstanding must have no shares
- * - loss unrealized does not exceed the difference between assets total and
- *   assets available
- * - assets available do not exceed assets total
- * - vault deposit increases assets and share issuance, and adds to:
- *   total assets, assets available, shares outstanding
- * - vault withdrawal and clawback reduce assets and share issuance, and
- *   subtracts from: total assets, assets available, shares outstanding
- * - vault set must not alter the vault assets or shares balance
- * - no vault transaction can change loss unrealized (it's updated by loan
- *   transactions)
- *
- */
-class ValidVault
-{
-    Number static constexpr zero{};
-
-    struct Vault final
-    {
-        uint256 key = beast::zero;
-        Asset asset = {};
-        AccountID pseudoId = {};
-        AccountID owner = {};
-        uint192 shareMPTID = beast::zero;
-        Number assetsTotal = 0;
-        Number assetsAvailable = 0;
-        Number assetsMaximum = 0;
-        Number lossUnrealized = 0;
-
-        Vault static make(SLE const&);
-    };
-
-    struct Shares final
-    {
-        MPTIssue share = {};
-        std::uint64_t sharesTotal = 0;
-        std::uint64_t sharesMaximum = 0;
-
-        Shares static make(SLE const&);
-    };
-
-    std::vector<Vault> afterVault_ = {};
-    std::vector<Shares> afterMPTs_ = {};
-    std::vector<Vault> beforeVault_ = {};
-    std::vector<Shares> beforeMPTs_ = {};
-    std::unordered_map<uint256, Number> deltas_ = {};
-
-public:
-    void
-    visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
-
-    bool
-    finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
-};
-
-}  // namespace xrpl

src/libxrpl/nodestore/DatabaseNodeImp.cpp

@@ -33,7 +33,7 @@ DatabaseNodeImp::fetchNodeObject(
 
     try
     {
-        status = backend_->fetch(hash, &nodeObject);
+        status = backend_->fetch(hash.data(), &nodeObject);
     }
     catch (std::exception const& e)
     {
@@ -68,10 +68,18 @@ DatabaseNodeImp::fetchBatch(std::vector<uint256> const& hashes)
     using namespace std::chrono;
     auto const before = steady_clock::now();
 
+    std::vector<uint256 const*> batch{};
+    batch.reserve(hashes.size());
+    for (size_t i = 0; i < hashes.size(); ++i)
+    {
+        auto const& hash = hashes[i];
+        batch.push_back(&hash);
+    }
+
     // Get the node objects that match the hashes from the backend. To protect
     // against the backends returning fewer or more results than expected, the
     // container is resized to the number of hashes.
-    auto results = backend_->fetchBatch(hashes).first;
+    auto results = backend_->fetchBatch(batch).first;
     XRPL_ASSERT(
         results.size() == hashes.size() || results.empty(),
         "number of output objects either matches number of input hashes or is empty");

src/libxrpl/nodestore/DatabaseRotatingImp.cpp

@@ -105,7 +105,7 @@ DatabaseRotatingImp::fetchNodeObject(
         std::shared_ptr<NodeObject> nodeObject;
         try
         {
-            status = backend->fetch(hash, &nodeObject);
+            status = backend->fetch(hash.data(), &nodeObject);
         }
         catch (std::exception const& e)
         {

src/libxrpl/nodestore/backend/MemoryFactory.cpp

@@ -116,9 +116,10 @@ public:
     //--------------------------------------------------------------------------
 
     Status
-    fetch(uint256 const& hash, std::shared_ptr<NodeObject>* pObject) override
+    fetch(void const* key, std::shared_ptr<NodeObject>* pObject) override
     {
         XRPL_ASSERT(db_, "xrpl::NodeStore::MemoryBackend::fetch : non-null database");
+        uint256 const hash(uint256::fromVoid(key));
 
         std::lock_guard _(db_->mutex);
 
@@ -133,14 +134,14 @@ public:
     }
 
     std::pair<std::vector<std::shared_ptr<NodeObject>>, Status>
-    fetchBatch(std::vector<uint256> const& hashes) override
+    fetchBatch(std::vector<uint256 const*> const& hashes) override
     {
         std::vector<std::shared_ptr<NodeObject>> results;
         results.reserve(hashes.size());
         for (auto const& h : hashes)
         {
             std::shared_ptr<NodeObject> nObj;
-            Status status = fetch(h, &nObj);
+            Status status = fetch(h->begin(), &nObj);
             if (status != ok)
                 results.push_back({});
             else

src/libxrpl/nodestore/backend/NuDBFactory.cpp

@@ -179,17 +179,17 @@ public:
     }
 
     Status
-    fetch(uint256 const& hash, std::shared_ptr<NodeObject>* pno) override
+    fetch(void const* key, std::shared_ptr<NodeObject>* pno) override
     {
         Status status;
         pno->reset();
         nudb::error_code ec;
         db_.fetch(
-            hash.data(),
-            [&hash, pno, &status](void const* data, std::size_t size) {
+            key,
+            [key, pno, &status](void const* data, std::size_t size) {
                 nudb::detail::buffer bf;
                 auto const result = nodeobject_decompress(data, size, bf);
-                DecodedBlob decoded(hash.data(), result.first, result.second);
+                DecodedBlob decoded(key, result.first, result.second);
                 if (!decoded.wasOk())
                 {
                     status = dataCorrupt;
@@ -207,14 +207,14 @@ public:
     }
 
     std::pair<std::vector<std::shared_ptr<NodeObject>>, Status>
-    fetchBatch(std::vector<uint256> const& hashes) override
+    fetchBatch(std::vector<uint256 const*> const& hashes) override
     {
         std::vector<std::shared_ptr<NodeObject>> results;
         results.reserve(hashes.size());
         for (auto const& h : hashes)
         {
             std::shared_ptr<NodeObject> nObj;
-            Status status = fetch(h, &nObj);
+            Status status = fetch(h->begin(), &nObj);
             if (status != ok)
                 results.push_back({});
             else

src/libxrpl/nodestore/backend/NullFactory.cpp

@@ -36,13 +36,13 @@ public:
     }
 
     Status
-    fetch(uint256 const&, std::shared_ptr<NodeObject>*) override
+    fetch(void const*, std::shared_ptr<NodeObject>*) override
     {
         return notFound;
     }
 
     std::pair<std::vector<std::shared_ptr<NodeObject>>, Status>
-    fetchBatch(std::vector<uint256> const& hashes) override
+    fetchBatch(std::vector<uint256 const*> const& hashes) override
     {
         return {};
     }

src/libxrpl/nodestore/backend/RocksDBFactory.cpp

@@ -244,7 +244,7 @@ public:
     //--------------------------------------------------------------------------
 
     Status
-    fetch(uint256 const& hash, std::shared_ptr<NodeObject>* pObject) override
+    fetch(void const* key, std::shared_ptr<NodeObject>* pObject) override
     {
         XRPL_ASSERT(m_db, "xrpl::NodeStore::RocksDBBackend::fetch : non-null database");
         pObject->reset();
@@ -252,7 +252,7 @@ public:
         Status status(ok);
 
         rocksdb::ReadOptions const options;
-        rocksdb::Slice const slice(std::bit_cast<char const*>(hash.data()), m_keyBytes);
+        rocksdb::Slice const slice(static_cast<char const*>(key), m_keyBytes);
 
         std::string string;
 
@@ -260,7 +260,7 @@ public:
 
         if (getStatus.ok())
         {
-            DecodedBlob decoded(hash.data(), string.data(), string.size());
+            DecodedBlob decoded(key, string.data(), string.size());
 
             if (decoded.wasOk())
             {
@@ -295,14 +295,14 @@ public:
     }
 
     std::pair<std::vector<std::shared_ptr<NodeObject>>, Status>
-    fetchBatch(std::vector<uint256> const& hashes) override
+    fetchBatch(std::vector<uint256 const*> const& hashes) override
     {
         std::vector<std::shared_ptr<NodeObject>> results;
         results.reserve(hashes.size());
         for (auto const& h : hashes)
         {
             std::shared_ptr<NodeObject> nObj;
-            Status status = fetch(h, &nObj);
+            Status status = fetch(h->begin(), &nObj);
             if (status != ok)
                 results.push_back({});
             else
@@ -332,8 +332,9 @@ public:
             EncodedBlob encoded(e);
 
             wb.Put(
-                rocksdb::Slice(std::bit_cast<char const*>(encoded.getKey()), m_keyBytes),
-                rocksdb::Slice(std::bit_cast<char const*>(encoded.getData()), encoded.getSize()));
+                rocksdb::Slice(reinterpret_cast<char const*>(encoded.getKey()), m_keyBytes),
+                rocksdb::Slice(
+                    reinterpret_cast<char const*>(encoded.getData()), encoded.getSize()));
         }
 
         rocksdb::WriteOptions const options;

src/libxrpl/tx/ApplyContext.cpp

@@ -1,9 +1,8 @@
-#include <xrpl/tx/ApplyContext.h>
-//
 #include <xrpl/basics/Log.h>
 #include <xrpl/beast/utility/instrumentation.h>
 #include <xrpl/json/to_string.h>
-#include <xrpl/tx/invariants/InvariantCheck.h>
+#include <xrpl/tx/ApplyContext.h>
+#include <xrpl/tx/InvariantCheck.h>
 
 namespace xrpl {
 

src/libxrpl/tx/invariants/AMMInvariant.cpp

@@ -1,305 +0,0 @@
-#include <xrpl/tx/invariants/AMMInvariant.h>
-//
-#include <xrpl/basics/Log.h>
-#include <xrpl/beast/utility/instrumentation.h>
-#include <xrpl/protocol/TxFormats.h>
-#include <xrpl/tx/transactors/AMM/AMMHelpers.h>
-#include <xrpl/tx/transactors/AMM/AMMUtils.h>
-
-namespace xrpl {
-
-void
-ValidAMM::visitEntry(
-    bool isDelete,
-    std::shared_ptr<SLE const> const& before,
-    std::shared_ptr<SLE const> const& after)
-{
-    if (isDelete)
-        return;
-
-    if (after)
-    {
-        auto const type = after->getType();
-        // AMM object changed
-        if (type == ltAMM)
-        {
-            ammAccount_ = after->getAccountID(sfAccount);
-            lptAMMBalanceAfter_ = after->getFieldAmount(sfLPTokenBalance);
-        }
-        // AMM pool changed
-        else if (
-            (type == ltRIPPLE_STATE && after->getFlags() & lsfAMMNode) ||
-            (type == ltACCOUNT_ROOT && after->isFieldPresent(sfAMMID)))
-        {
-            ammPoolChanged_ = true;
-        }
-    }
-
-    if (before)
-    {
-        // AMM object changed
-        if (before->getType() == ltAMM)
-        {
-            lptAMMBalanceBefore_ = before->getFieldAmount(sfLPTokenBalance);
-        }
-    }
-}
-
-static bool
-validBalances(
-    STAmount const& amount,
-    STAmount const& amount2,
-    STAmount const& lptAMMBalance,
-    ValidAMM::ZeroAllowed zeroAllowed)
-{
-    bool const positive =
-        amount > beast::zero && amount2 > beast::zero && lptAMMBalance > beast::zero;
-    if (zeroAllowed == ValidAMM::ZeroAllowed::Yes)
-        return positive ||
-            (amount == beast::zero && amount2 == beast::zero && lptAMMBalance == beast::zero);
-    return positive;
-}
-
-bool
-ValidAMM::finalizeVote(bool enforce, beast::Journal const& j) const
-{
-    if (lptAMMBalanceAfter_ != lptAMMBalanceBefore_ || ammPoolChanged_)
-    {
-        // LPTokens and the pool can not change on vote
-        // LCOV_EXCL_START
-        JLOG(j.error()) << "AMMVote invariant failed: " << lptAMMBalanceBefore_.value_or(STAmount{})
-                        << " " << lptAMMBalanceAfter_.value_or(STAmount{}) << " "
-                        << ammPoolChanged_;
-        if (enforce)
-            return false;
-        // LCOV_EXCL_STOP
-    }
-
-    return true;
-}
-
-bool
-ValidAMM::finalizeBid(bool enforce, beast::Journal const& j) const
-{
-    if (ammPoolChanged_)
-    {
-        // The pool can not change on bid
-        // LCOV_EXCL_START
-        JLOG(j.error()) << "AMMBid invariant failed: pool changed";
-        if (enforce)
-            return false;
-        // LCOV_EXCL_STOP
-    }
-    // LPTokens are burnt, therefore there should be fewer LPTokens
-    else if (
-        lptAMMBalanceBefore_ && lptAMMBalanceAfter_ &&
-        (*lptAMMBalanceAfter_ > *lptAMMBalanceBefore_ || *lptAMMBalanceAfter_ <= beast::zero))
-    {
-        // LCOV_EXCL_START
-        JLOG(j.error()) << "AMMBid invariant failed: " << *lptAMMBalanceBefore_ << " "
-                        << *lptAMMBalanceAfter_;
-        if (enforce)
-            return false;
-        // LCOV_EXCL_STOP
-    }
-
-    return true;
-}
-
-bool
-ValidAMM::finalizeCreate(
-    STTx const& tx,
-    ReadView const& view,
-    bool enforce,
-    beast::Journal const& j) const
-{
-    if (!ammAccount_)
-    {
-        // LCOV_EXCL_START
-        JLOG(j.error()) << "AMMCreate invariant failed: AMM object is not created";
-        if (enforce)
-            return false;
-        // LCOV_EXCL_STOP
-    }
-    else
-    {
-        auto const [amount, amount2] = ammPoolHolds(
-            view,
-            *ammAccount_,
-            tx[sfAmount].get<Issue>(),
-            tx[sfAmount2].get<Issue>(),
-            fhIGNORE_FREEZE,
-            j);
-        // Create invariant:
-        // sqrt(amount * amount2) == LPTokens
-        // all balances are greater than zero
-        if (!validBalances(amount, amount2, *lptAMMBalanceAfter_, ZeroAllowed::No) ||
-            ammLPTokens(amount, amount2, lptAMMBalanceAfter_->issue()) != *lptAMMBalanceAfter_)
-        {
-            JLOG(j.error()) << "AMMCreate invariant failed: " << amount << " " << amount2 << " "
-                            << *lptAMMBalanceAfter_;
-            if (enforce)
-                return false;
-        }
-    }
-
-    return true;
-}
-
-bool
-ValidAMM::finalizeDelete(bool enforce, TER res, beast::Journal const& j) const
-{
-    if (ammAccount_)
-    {
-        // LCOV_EXCL_START
-        std::string const msg = (res == tesSUCCESS) ? "AMM object is not deleted on tesSUCCESS"
-                                                    : "AMM object is changed on tecINCOMPLETE";
-        JLOG(j.error()) << "AMMDelete invariant failed: " << msg;
-        if (enforce)
-            return false;
-        // LCOV_EXCL_STOP
-    }
-
-    return true;
-}
-
-bool
-ValidAMM::finalizeDEX(bool enforce, beast::Journal const& j) const
-{
-    if (ammAccount_)
-    {
-        // LCOV_EXCL_START
-        JLOG(j.error()) << "AMM swap invariant failed: AMM object changed";
-        if (enforce)
-            return false;
-        // LCOV_EXCL_STOP
-    }
-
-    return true;
-}
-
-bool
-ValidAMM::generalInvariant(
-    xrpl::STTx const& tx,
-    xrpl::ReadView const& view,
-    ZeroAllowed zeroAllowed,
-    beast::Journal const& j) const
-{
-    auto const [amount, amount2] = ammPoolHolds(
-        view,
-        *ammAccount_,
-        tx[sfAsset].get<Issue>(),
-        tx[sfAsset2].get<Issue>(),
-        fhIGNORE_FREEZE,
-        j);
-    // Deposit and Withdrawal invariant:
-    // sqrt(amount * amount2) >= LPTokens
-    // all balances are greater than zero
-    // unless on last withdrawal
-    auto const poolProductMean = root2(amount * amount2);
-    bool const nonNegativeBalances =
-        validBalances(amount, amount2, *lptAMMBalanceAfter_, zeroAllowed);
-    bool const strongInvariantCheck = poolProductMean >= *lptAMMBalanceAfter_;
-    // Allow for a small relative error if strongInvariantCheck fails
-    auto weakInvariantCheck = [&]() {
-        return *lptAMMBalanceAfter_ != beast::zero &&
-            withinRelativeDistance(poolProductMean, Number{*lptAMMBalanceAfter_}, Number{1, -11});
-    };
-    if (!nonNegativeBalances || (!strongInvariantCheck && !weakInvariantCheck()))
-    {
-        JLOG(j.error()) << "AMM " << tx.getTxnType()
-                        << " invariant failed: " << tx.getHash(HashPrefix::transactionID) << " "
-                        << ammPoolChanged_ << " " << amount << " " << amount2 << " "
-                        << poolProductMean << " " << lptAMMBalanceAfter_->getText() << " "
-                        << ((*lptAMMBalanceAfter_ == beast::zero)
-                                ? Number{1}
-                                : ((*lptAMMBalanceAfter_ - poolProductMean) / poolProductMean));
-        return false;
-    }
-
-    return true;
-}
-
-bool
-ValidAMM::finalizeDeposit(
-    xrpl::STTx const& tx,
-    xrpl::ReadView const& view,
-    bool enforce,
-    beast::Journal const& j) const
-{
-    if (!ammAccount_)
-    {
-        // LCOV_EXCL_START
-        JLOG(j.error()) << "AMMDeposit invariant failed: AMM object is deleted";
-        if (enforce)
-            return false;
-        // LCOV_EXCL_STOP
-    }
-    else if (!generalInvariant(tx, view, ZeroAllowed::No, j) && enforce)
-        return false;
-
-    return true;
-}
-
-bool
-ValidAMM::finalizeWithdraw(
-    xrpl::STTx const& tx,
-    xrpl::ReadView const& view,
-    bool enforce,
-    beast::Journal const& j) const
-{
-    if (!ammAccount_)
-    {
-        // Last Withdraw or Clawback deleted AMM
-    }
-    else if (!generalInvariant(tx, view, ZeroAllowed::Yes, j))
-    {
-        if (enforce)
-            return false;
-    }
-
-    return true;
-}
-
-bool
-ValidAMM::finalize(
-    STTx const& tx,
-    TER const result,
-    XRPAmount const,
-    ReadView const& view,
-    beast::Journal const& j)
-{
-    // Delete may return tecINCOMPLETE if there are too many
-    // trustlines to delete.
-    if (result != tesSUCCESS && result != tecINCOMPLETE)
-        return true;
-
-    bool const enforce = view.rules().enabled(fixAMMv1_3);
-
-    switch (tx.getTxnType())
-    {
-        case ttAMM_CREATE:
-            return finalizeCreate(tx, view, enforce, j);
-        case ttAMM_DEPOSIT:
-            return finalizeDeposit(tx, view, enforce, j);
-        case ttAMM_CLAWBACK:
-        case ttAMM_WITHDRAW:
-            return finalizeWithdraw(tx, view, enforce, j);
-        case ttAMM_BID:
-            return finalizeBid(enforce, j);
-        case ttAMM_VOTE:
-            return finalizeVote(enforce, j);
-        case ttAMM_DELETE:
-            return finalizeDelete(enforce, result, j);
-        case ttCHECK_CASH:
-        case ttOFFER_CREATE:
-        case ttPAYMENT:
-            return finalizeDEX(enforce, j);
-        default:
-            break;
-    }
-
-    return true;
-}
-
-}  // namespace xrpl

src/libxrpl/tx/invariants/FreezeInvariant.cpp

@@ -1,278 +0,0 @@
-#include <xrpl/tx/invariants/FreezeInvariant.h>
-//
-#include <xrpl/basics/Log.h>
-#include <xrpl/beast/utility/instrumentation.h>
-#include <xrpl/protocol/Feature.h>
-#include <xrpl/protocol/TxFormats.h>
-#include <xrpl/tx/invariants/InvariantCheckPrivilege.h>
-
-namespace xrpl {
-
-void
-TransfersNotFrozen::visitEntry(
-    bool isDelete,
-    std::shared_ptr<SLE const> const& before,
-    std::shared_ptr<SLE const> const& after)
-{
-    /*
-     * A trust line freeze state alone doesn't determine if a transfer is
-     * frozen. The transfer must be examined "end-to-end" because both sides of
-     * the transfer may have different freeze states and freeze impact depends
-     * on the transfer direction. This is why first we need to track the
-     * transfers using IssuerChanges senders/receivers.
-     *
-     * Only in validateIssuerChanges, after we collected all changes can we
-     * determine if the transfer is valid.
-     */
-    if (!isValidEntry(before, after))
-    {
-        return;
-    }
-
-    auto const balanceChange = calculateBalanceChange(before, after, isDelete);
-    if (balanceChange.signum() == 0)
-    {
-        return;
-    }
-
-    recordBalanceChanges(after, balanceChange);
-}
-
-bool
-TransfersNotFrozen::finalize(
-    STTx const& tx,
-    TER const ter,
-    XRPAmount const fee,
-    ReadView const& view,
-    beast::Journal const& j)
-{
-    /*
-     * We check this invariant regardless of deep freeze amendment status,
-     * allowing for detection and logging of potential issues even when the
-     * amendment is disabled.
-     *
-     * If an exploit that allows moving frozen assets is discovered,
-     * we can alert operators who monitor fatal messages and trigger assert in
-     * debug builds for an early warning.
-     *
-     * In an unlikely event that an exploit is found, this early detection
-     * enables encouraging the UNL to expedite deep freeze amendment activation
-     * or deploy hotfixes via new amendments. In case of a new amendment, we'd
-     * only have to change this line setting 'enforce' variable.
-     * enforce = view.rules().enabled(featureDeepFreeze) ||
-     *           view.rules().enabled(fixFreezeExploit);
-     */
-    [[maybe_unused]] bool const enforce = view.rules().enabled(featureDeepFreeze);
-
-    for (auto const& [issue, changes] : balanceChanges_)
-    {
-        auto const issuerSle = findIssuer(issue.account, view);
-        // It should be impossible for the issuer to not be found, but check
-        // just in case so rippled doesn't crash in release.
-        if (!issuerSle)
-        {
-            // The comment above starting with "assert(enforce)" explains this
-            // assert.
-            XRPL_ASSERT(
-                enforce,
-                "xrpl::TransfersNotFrozen::finalize : enforce "
-                "invariant.");
-            if (enforce)
-            {
-                return false;
-            }
-            continue;
-        }
-
-        if (!validateIssuerChanges(issuerSle, changes, tx, j, enforce))
-        {
-            return false;
-        }
-    }
-
-    return true;
-}
-
-bool
-TransfersNotFrozen::isValidEntry(
-    std::shared_ptr<SLE const> const& before,
-    std::shared_ptr<SLE const> const& after)
-{
-    // `after` can never be null, even if the trust line is deleted.
-    XRPL_ASSERT(after, "xrpl::TransfersNotFrozen::isValidEntry : valid after.");
-    if (!after)
-    {
-        return false;
-    }
-
-    if (after->getType() == ltACCOUNT_ROOT)
-    {
-        possibleIssuers_.emplace(after->at(sfAccount), after);
-        return false;
-    }
-
-    /* While LedgerEntryTypesMatch invariant also checks types, all invariants
-     * are processed regardless of previous failures.
-     *
-     * This type check is still necessary here because it prevents potential
-     * issues in subsequent processing.
-     */
-    return after->getType() == ltRIPPLE_STATE && (!before || before->getType() == ltRIPPLE_STATE);
-}
-
-STAmount
-TransfersNotFrozen::calculateBalanceChange(
-    std::shared_ptr<SLE const> const& before,
-    std::shared_ptr<SLE const> const& after,
-    bool isDelete)
-{
-    auto const getBalance = [](auto const& line, auto const& other, bool zero) {
-        STAmount amt = line ? line->at(sfBalance) : other->at(sfBalance).zeroed();
-        return zero ? amt.zeroed() : amt;
-    };
-
-    /* Trust lines can be created dynamically by other transactions such as
-     * Payment and OfferCreate that cross offers. Such trust line won't be
-     * created frozen, but the sender might be, so the starting balance must be
-     * treated as zero.
-     */
-    auto const balanceBefore = getBalance(before, after, false);
-
-    /* Same as above, trust lines can be dynamically deleted, and for frozen
-     * trust lines, payments not involving the issuer must be blocked. This is
-     * achieved by treating the final balance as zero when isDelete=true to
-     * ensure frozen line restrictions are enforced even during deletion.
-     */
-    auto const balanceAfter = getBalance(after, before, isDelete);
-
-    return balanceAfter - balanceBefore;
-}
-
-void
-TransfersNotFrozen::recordBalance(Issue const& issue, BalanceChange change)
-{
-    XRPL_ASSERT(
-        change.balanceChangeSign,
-        "xrpl::TransfersNotFrozen::recordBalance : valid trustline "
-        "balance sign.");
-    auto& changes = balanceChanges_[issue];
-    if (change.balanceChangeSign < 0)
-        changes.senders.emplace_back(std::move(change));
-    else
-        changes.receivers.emplace_back(std::move(change));
-}
-
-void
-TransfersNotFrozen::recordBalanceChanges(
-    std::shared_ptr<SLE const> const& after,
-    STAmount const& balanceChange)
-{
-    auto const balanceChangeSign = balanceChange.signum();
-    auto const currency = after->at(sfBalance).getCurrency();
-
-    // Change from low account's perspective, which is trust line default
-    recordBalance({currency, after->at(sfHighLimit).getIssuer()}, {after, balanceChangeSign});
-
-    // Change from high account's perspective, which reverses the sign.
-    recordBalance({currency, after->at(sfLowLimit).getIssuer()}, {after, -balanceChangeSign});
-}
-
-std::shared_ptr<SLE const>
-TransfersNotFrozen::findIssuer(AccountID const& issuerID, ReadView const& view)
-{
-    if (auto it = possibleIssuers_.find(issuerID); it != possibleIssuers_.end())
-    {
-        return it->second;
-    }
-
-    return view.read(keylet::account(issuerID));
-}
-
-bool
-TransfersNotFrozen::validateIssuerChanges(
-    std::shared_ptr<SLE const> const& issuer,
-    IssuerChanges const& changes,
-    STTx const& tx,
-    beast::Journal const& j,
-    bool enforce)
-{
-    if (!issuer)
-    {
-        return false;
-    }
-
-    bool const globalFreeze = issuer->isFlag(lsfGlobalFreeze);
-    if (changes.receivers.empty() || changes.senders.empty())
-    {
-        /* If there are no receivers, then the holder(s) are returning
-         * their tokens to the issuer. Likewise, if there are no
-         * senders, then the issuer is issuing tokens to the holder(s).
-         * This is allowed regardless of the issuer's freeze flags. (The
-         * holder may have contradicting freeze flags, but that will be
-         * checked when the holder is treated as issuer.)
-         */
-        return true;
-    }
-
-    for (auto const& actors : {changes.senders, changes.receivers})
-    {
-        for (auto const& change : actors)
-        {
-            bool const high = change.line->at(sfLowLimit).getIssuer() == issuer->at(sfAccount);
-
-            if (!validateFrozenState(change, high, tx, j, enforce, globalFreeze))
-            {
-                return false;
-            }
-        }
-    }
-    return true;
-}
-
-bool
-TransfersNotFrozen::validateFrozenState(
-    BalanceChange const& change,
-    bool high,
-    STTx const& tx,
-    beast::Journal const& j,
-    bool enforce,
-    bool globalFreeze)
-{
-    bool const freeze =
-        change.balanceChangeSign < 0 && change.line->isFlag(high ? lsfLowFreeze : lsfHighFreeze);
-    bool const deepFreeze = change.line->isFlag(high ? lsfLowDeepFreeze : lsfHighDeepFreeze);
-    bool const frozen = globalFreeze || deepFreeze || freeze;
-
-    bool const isAMMLine = change.line->isFlag(lsfAMMNode);
-
-    if (!frozen)
-    {
-        return true;
-    }
-
-    // AMMClawbacks are allowed to override some freeze rules
-    if ((!isAMMLine || globalFreeze) && hasPrivilege(tx, overrideFreeze))
-    {
-        JLOG(j.debug()) << "Invariant check allowing funds to be moved "
-                        << (change.balanceChangeSign > 0 ? "to" : "from")
-                        << " a frozen trustline for AMMClawback " << tx.getTransactionID();
-        return true;
-    }
-
-    JLOG(j.fatal()) << "Invariant failed: Attempting to move frozen funds for "
-                    << tx.getTransactionID();
-    // The comment above starting with "assert(enforce)" explains this assert.
-    XRPL_ASSERT(
-        enforce,
-        "xrpl::TransfersNotFrozen::validateFrozenState : enforce "
-        "invariant.");
-
-    if (enforce)
-    {
-        return false;
-    }
-
-    return true;
-}
-
-}  // namespace xrpl

src/libxrpl/tx/invariants/LoanInvariant.cpp

@@ -1,278 +0,0 @@
-#include <xrpl/tx/invariants/LoanInvariant.h>
-//
-#include <xrpl/basics/Log.h>
-#include <xrpl/beast/utility/instrumentation.h>
-#include <xrpl/ledger/View.h>
-#include <xrpl/protocol/Indexes.h>
-#include <xrpl/protocol/LedgerFormats.h>
-#include <xrpl/protocol/STNumber.h>
-#include <xrpl/protocol/TxFormats.h>
-
-namespace xrpl {
-
-void
-ValidLoanBroker::visitEntry(
-    bool isDelete,
-    std::shared_ptr<SLE const> const& before,
-    std::shared_ptr<SLE const> const& after)
-{
-    if (after)
-    {
-        if (after->getType() == ltLOAN_BROKER)
-        {
-            auto& broker = brokers_[after->key()];
-            broker.brokerBefore = before;
-            broker.brokerAfter = after;
-        }
-        else if (after->getType() == ltACCOUNT_ROOT && after->isFieldPresent(sfLoanBrokerID))
-        {
-            auto const& loanBrokerID = after->at(sfLoanBrokerID);
-            // create an entry if one doesn't already exist
-            brokers_.emplace(loanBrokerID, BrokerInfo{});
-        }
-        else if (after->getType() == ltRIPPLE_STATE)
-        {
-            lines_.emplace_back(after);
-        }
-        else if (after->getType() == ltMPTOKEN)
-        {
-            mpts_.emplace_back(after);
-        }
-    }
-}
-
-bool
-ValidLoanBroker::goodZeroDirectory(
-    ReadView const& view,
-    SLE::const_ref dir,
-    beast::Journal const& j) const
-{
-    auto const next = dir->at(~sfIndexNext);
-    auto const prev = dir->at(~sfIndexPrevious);
-    if ((prev && *prev) || (next && *next))
-    {
-        JLOG(j.fatal()) << "Invariant failed: Loan Broker with zero "
-                           "OwnerCount has multiple directory pages";
-        return false;
-    }
-    auto indexes = dir->getFieldV256(sfIndexes);
-    if (indexes.size() > 1)
-    {
-        JLOG(j.fatal()) << "Invariant failed: Loan Broker with zero "
-                           "OwnerCount has multiple indexes in the Directory root";
-        return false;
-    }
-    if (indexes.size() == 1)
-    {
-        auto const index = indexes.value().front();
-        auto const sle = view.read(keylet::unchecked(index));
-        if (!sle)
-        {
-            JLOG(j.fatal()) << "Invariant failed: Loan Broker directory corrupt";
-            return false;
-        }
-        if (sle->getType() != ltRIPPLE_STATE && sle->getType() != ltMPTOKEN)
-        {
-            JLOG(j.fatal()) << "Invariant failed: Loan Broker with zero "
-                               "OwnerCount has an unexpected entry in the directory";
-            return false;
-        }
-    }
-
-    return true;
-}
-
-bool
-ValidLoanBroker::finalize(
-    STTx const& tx,
-    TER const,
-    XRPAmount const,
-    ReadView const& view,
-    beast::Journal const& j)
-{
-    // Loan Brokers will not exist on ledger if the Lending Protocol amendment
-    // is not enabled, so there's no need to check it.
-
-    for (auto const& line : lines_)
-    {
-        for (auto const& field : {&sfLowLimit, &sfHighLimit})
-        {
-            auto const account = view.read(keylet::account(line->at(*field).getIssuer()));
-            // This Invariant doesn't know about the rules for Trust Lines, so
-            // if the account is missing, don't treat it as an error. This
-            // loop is only concerned with finding Broker pseudo-accounts
-            if (account && account->isFieldPresent(sfLoanBrokerID))
-            {
-                auto const& loanBrokerID = account->at(sfLoanBrokerID);
-                // create an entry if one doesn't already exist
-                brokers_.emplace(loanBrokerID, BrokerInfo{});
-            }
-        }
-    }
-    for (auto const& mpt : mpts_)
-    {
-        auto const account = view.read(keylet::account(mpt->at(sfAccount)));
-        // This Invariant doesn't know about the rules for MPTokens, so
-        // if the account is missing, don't treat is as an error. This
-        // loop is only concerned with finding Broker pseudo-accounts
-        if (account && account->isFieldPresent(sfLoanBrokerID))
-        {
-            auto const& loanBrokerID = account->at(sfLoanBrokerID);
-            // create an entry if one doesn't already exist
-            brokers_.emplace(loanBrokerID, BrokerInfo{});
-        }
-    }
-
-    for (auto const& [brokerID, broker] : brokers_)
-    {
-        auto const& after =
-            broker.brokerAfter ? broker.brokerAfter : view.read(keylet::loanbroker(brokerID));
-
-        if (!after)
-        {
-            JLOG(j.fatal()) << "Invariant failed: Loan Broker missing";
-            return false;
-        }
-
-        auto const& before = broker.brokerBefore;
-
-        // https://github.com/Tapanito/XRPL-Standards/blob/xls-66-lending-protocol/XLS-0066d-lending-protocol/README.md#3123-invariants
-        // If `LoanBroker.OwnerCount = 0` the `DirectoryNode` will have at most
-        // one node (the root), which will only hold entries for `RippleState`
-        // or `MPToken` objects.
-        if (after->at(sfOwnerCount) == 0)
-        {
-            auto const dir = view.read(keylet::ownerDir(after->at(sfAccount)));
-            if (dir)
-            {
-                if (!goodZeroDirectory(view, dir, j))
-                {
-                    return false;
-                }
-            }
-        }
-        if (before && before->at(sfLoanSequence) > after->at(sfLoanSequence))
-        {
-            JLOG(j.fatal()) << "Invariant failed: Loan Broker sequence number "
-                               "decreased";
-            return false;
-        }
-        if (after->at(sfDebtTotal) < 0)
-        {
-            JLOG(j.fatal()) << "Invariant failed: Loan Broker debt total is negative";
-            return false;
-        }
-        if (after->at(sfCoverAvailable) < 0)
-        {
-            JLOG(j.fatal()) << "Invariant failed: Loan Broker cover available is negative";
-            return false;
-        }
-        auto const vault = view.read(keylet::vault(after->at(sfVaultID)));
-        if (!vault)
-        {
-            JLOG(j.fatal()) << "Invariant failed: Loan Broker vault ID is invalid";
-            return false;
-        }
-        auto const& vaultAsset = vault->at(sfAsset);
-        if (after->at(sfCoverAvailable) < accountHolds(
-                                              view,
-                                              after->at(sfAccount),
-                                              vaultAsset,
-                                              FreezeHandling::fhIGNORE_FREEZE,
-                                              AuthHandling::ahIGNORE_AUTH,
-                                              j))
-        {
-            JLOG(j.fatal()) << "Invariant failed: Loan Broker cover available "
-                               "is less than pseudo-account asset balance";
-            return false;
-        }
-    }
-    return true;
-}
-
-//------------------------------------------------------------------------------
-
-void
-ValidLoan::visitEntry(
-    bool isDelete,
-    std::shared_ptr<SLE const> const& before,
-    std::shared_ptr<SLE const> const& after)
-{
-    if (after && after->getType() == ltLOAN)
-    {
-        loans_.emplace_back(before, after);
-    }
-}
-
-bool
-ValidLoan::finalize(
-    STTx const& tx,
-    TER const,
-    XRPAmount const,
-    ReadView const& view,
-    beast::Journal const& j)
-{
-    // Loans will not exist on ledger if the Lending Protocol amendment
-    // is not enabled, so there's no need to check it.
-
-    for (auto const& [before, after] : loans_)
-    {
-        // https://github.com/Tapanito/XRPL-Standards/blob/xls-66-lending-protocol/XLS-0066d-lending-protocol/README.md#3223-invariants
-        // If `Loan.PaymentRemaining = 0` then the loan MUST be fully paid off
-        if (after->at(sfPaymentRemaining) == 0 &&
-            (after->at(sfTotalValueOutstanding) != beast::zero ||
-             after->at(sfPrincipalOutstanding) != beast::zero ||
-             after->at(sfManagementFeeOutstanding) != beast::zero))
-        {
-            JLOG(j.fatal()) << "Invariant failed: Loan with zero payments "
-                               "remaining has not been paid off";
-            return false;
-        }
-        // If `Loan.PaymentRemaining != 0` then the loan MUST NOT be fully paid
-        // off
-        if (after->at(sfPaymentRemaining) != 0 &&
-            after->at(sfTotalValueOutstanding) == beast::zero &&
-            after->at(sfPrincipalOutstanding) == beast::zero &&
-            after->at(sfManagementFeeOutstanding) == beast::zero)
-        {
-            JLOG(j.fatal()) << "Invariant failed: Loan with zero payments "
-                               "remaining has not been paid off";
-            return false;
-        }
-        if (before && (before->isFlag(lsfLoanOverpayment) != after->isFlag(lsfLoanOverpayment)))
-        {
-            JLOG(j.fatal()) << "Invariant failed: Loan Overpayment flag changed";
-            return false;
-        }
-        // Must not be negative - STNumber
-        for (auto const field :
-             {&sfLoanServiceFee,
-              &sfLatePaymentFee,
-              &sfClosePaymentFee,
-              &sfPrincipalOutstanding,
-              &sfTotalValueOutstanding,
-              &sfManagementFeeOutstanding})
-        {
-            if (after->at(*field) < 0)
-            {
-                JLOG(j.fatal()) << "Invariant failed: " << field->getName() << " is negative ";
-                return false;
-            }
-        }
-        // Must be positive - STNumber
-        for (auto const field : {
-                 &sfPeriodicPayment,
-             })
-        {
-            if (after->at(*field) <= 0)
-            {
-                JLOG(j.fatal()) << "Invariant failed: " << field->getName()
-                                << " is zero or negative ";
-                return false;
-            }
-        }
-    }
-    return true;
-}
-
-}  // namespace xrpl

src/libxrpl/tx/invariants/MPTInvariant.cpp

@@ -1,192 +0,0 @@
-#include <xrpl/tx/invariants/MPTInvariant.h>
-//
-#include <xrpl/basics/Log.h>
-#include <xrpl/beast/utility/instrumentation.h>
-#include <xrpl/protocol/Feature.h>
-#include <xrpl/protocol/Indexes.h>
-#include <xrpl/protocol/MPTIssue.h>
-#include <xrpl/protocol/TxFormats.h>
-#include <xrpl/tx/invariants/InvariantCheckPrivilege.h>
-
-namespace xrpl {
-
-void
-ValidMPTIssuance::visitEntry(
-    bool isDelete,
-    std::shared_ptr<SLE const> const& before,
-    std::shared_ptr<SLE const> const& after)
-{
-    if (after && after->getType() == ltMPTOKEN_ISSUANCE)
-    {
-        if (isDelete)
-            mptIssuancesDeleted_++;
-        else if (!before)
-            mptIssuancesCreated_++;
-    }
-
-    if (after && after->getType() == ltMPTOKEN)
-    {
-        if (isDelete)
-            mptokensDeleted_++;
-        else if (!before)
-        {
-            mptokensCreated_++;
-            MPTIssue const mptIssue{after->at(sfMPTokenIssuanceID)};
-            if (mptIssue.getIssuer() == after->at(sfAccount))
-                mptCreatedByIssuer_ = true;
-        }
-    }
-}
-
-bool
-ValidMPTIssuance::finalize(
-    STTx const& tx,
-    TER const result,
-    XRPAmount const _fee,
-    ReadView const& view,
-    beast::Journal const& j)
-{
-    if (result == tesSUCCESS)
-    {
-        auto const& rules = view.rules();
-        [[maybe_unused]]
-        bool enforceCreatedByIssuer =
-            rules.enabled(featureSingleAssetVault) || rules.enabled(featureLendingProtocol);
-        if (mptCreatedByIssuer_)
-        {
-            JLOG(j.fatal()) << "Invariant failed: MPToken created for the MPT issuer";
-            // The comment above starting with "assert(enforce)" explains this
-            // assert.
-            XRPL_ASSERT_PARTS(
-                enforceCreatedByIssuer, "xrpl::ValidMPTIssuance::finalize", "no issuer MPToken");
-            if (enforceCreatedByIssuer)
-                return false;
-        }
-
-        auto const txnType = tx.getTxnType();
-        if (hasPrivilege(tx, createMPTIssuance))
-        {
-            if (mptIssuancesCreated_ == 0)
-            {
-                JLOG(j.fatal()) << "Invariant failed: transaction "
-                                   "succeeded without creating a MPT issuance";
-            }
-            else if (mptIssuancesDeleted_ != 0)
-            {
-                JLOG(j.fatal()) << "Invariant failed: transaction "
-                                   "succeeded while removing MPT issuances";
-            }
-            else if (mptIssuancesCreated_ > 1)
-            {
-                JLOG(j.fatal()) << "Invariant failed: transaction "
-                                   "succeeded but created multiple issuances";
-            }
-
-            return mptIssuancesCreated_ == 1 && mptIssuancesDeleted_ == 0;
-        }
-
-        if (hasPrivilege(tx, destroyMPTIssuance))
-        {
-            if (mptIssuancesDeleted_ == 0)
-            {
-                JLOG(j.fatal()) << "Invariant failed: MPT issuance deletion "
-                                   "succeeded without removing a MPT issuance";
-            }
-            else if (mptIssuancesCreated_ > 0)
-            {
-                JLOG(j.fatal()) << "Invariant failed: MPT issuance deletion "
-                                   "succeeded while creating MPT issuances";
-            }
-            else if (mptIssuancesDeleted_ > 1)
-            {
-                JLOG(j.fatal()) << "Invariant failed: MPT issuance deletion "
-                                   "succeeded but deleted multiple issuances";
-            }
-
-            return mptIssuancesCreated_ == 0 && mptIssuancesDeleted_ == 1;
-        }
-
-        bool const lendingProtocolEnabled = view.rules().enabled(featureLendingProtocol);
-        // ttESCROW_FINISH may authorize an MPT, but it can't have the
-        // mayAuthorizeMPT privilege, because that may cause
-        // non-amendment-gated side effects.
-        bool const enforceEscrowFinish = (txnType == ttESCROW_FINISH) &&
-            (view.rules().enabled(featureSingleAssetVault) || lendingProtocolEnabled);
-        if (hasPrivilege(tx, mustAuthorizeMPT | mayAuthorizeMPT) || enforceEscrowFinish)
-        {
-            bool const submittedByIssuer = tx.isFieldPresent(sfHolder);
-
-            if (mptIssuancesCreated_ > 0)
-            {
-                JLOG(j.fatal()) << "Invariant failed: MPT authorize "
-                                   "succeeded but created MPT issuances";
-                return false;
-            }
-            else if (mptIssuancesDeleted_ > 0)
-            {
-                JLOG(j.fatal()) << "Invariant failed: MPT authorize "
-                                   "succeeded but deleted issuances";
-                return false;
-            }
-            else if (lendingProtocolEnabled && mptokensCreated_ + mptokensDeleted_ > 1)
-            {
-                JLOG(j.fatal()) << "Invariant failed: MPT authorize succeeded "
-                                   "but created/deleted bad number mptokens";
-                return false;
-            }
-            else if (submittedByIssuer && (mptokensCreated_ > 0 || mptokensDeleted_ > 0))
-            {
-                JLOG(j.fatal()) << "Invariant failed: MPT authorize submitted by issuer "
-                                   "succeeded but created/deleted mptokens";
-                return false;
-            }
-            else if (
-                !submittedByIssuer && hasPrivilege(tx, mustAuthorizeMPT) &&
-                (mptokensCreated_ + mptokensDeleted_ != 1))
-            {
-                // if the holder submitted this tx, then a mptoken must be
-                // either created or deleted.
-                JLOG(j.fatal()) << "Invariant failed: MPT authorize submitted by holder "
-                                   "succeeded but created/deleted bad number of mptokens";
-                return false;
-            }
-
-            return true;
-        }
-        if (txnType == ttESCROW_FINISH)
-        {
-            // ttESCROW_FINISH may authorize an MPT, but it can't have the
-            // mayAuthorizeMPT privilege, because that may cause
-            // non-amendment-gated side effects.
-            XRPL_ASSERT_PARTS(
-                !enforceEscrowFinish, "xrpl::ValidMPTIssuance::finalize", "not escrow finish tx");
-            return true;
-        }
-
-        if (hasPrivilege(tx, mayDeleteMPT) && mptokensDeleted_ == 1 && mptokensCreated_ == 0 &&
-            mptIssuancesCreated_ == 0 && mptIssuancesDeleted_ == 0)
-            return true;
-    }
-
-    if (mptIssuancesCreated_ != 0)
-    {
-        JLOG(j.fatal()) << "Invariant failed: a MPT issuance was created";
-    }
-    else if (mptIssuancesDeleted_ != 0)
-    {
-        JLOG(j.fatal()) << "Invariant failed: a MPT issuance was deleted";
-    }
-    else if (mptokensCreated_ != 0)
-    {
-        JLOG(j.fatal()) << "Invariant failed: a MPToken was created";
-    }
-    else if (mptokensDeleted_ != 0)
-    {
-        JLOG(j.fatal()) << "Invariant failed: a MPToken was deleted";
-    }
-
-    return mptIssuancesCreated_ == 0 && mptIssuancesDeleted_ == 0 && mptokensCreated_ == 0 &&
-        mptokensDeleted_ == 0;
-}
-
-}  // namespace xrpl

src/libxrpl/tx/invariants/NFTInvariant.cpp

@@ -1,274 +0,0 @@
-#include <xrpl/tx/invariants/NFTInvariant.h>
-//
-#include <xrpl/basics/Log.h>
-#include <xrpl/beast/utility/instrumentation.h>
-#include <xrpl/protocol/Indexes.h>
-#include <xrpl/protocol/TxFormats.h>
-#include <xrpl/protocol/nftPageMask.h>
-#include <xrpl/tx/invariants/InvariantCheckPrivilege.h>
-#include <xrpl/tx/transactors/NFT/NFTokenUtils.h>
-
-namespace xrpl {
-
-void
-ValidNFTokenPage::visitEntry(
-    bool isDelete,
-    std::shared_ptr<SLE const> const& before,
-    std::shared_ptr<SLE const> const& after)
-{
-    static constexpr uint256 const& pageBits = nft::pageMask;
-    static constexpr uint256 const accountBits = ~pageBits;
-
-    if ((before && before->getType() != ltNFTOKEN_PAGE) ||
-        (after && after->getType() != ltNFTOKEN_PAGE))
-        return;
-
-    auto check = [this, isDelete](std::shared_ptr<SLE const> const& sle) {
-        uint256 const account = sle->key() & accountBits;
-        uint256 const hiLimit = sle->key() & pageBits;
-        std::optional<uint256> const prev = (*sle)[~sfPreviousPageMin];
-
-        // Make sure that any page links...
-        //  1. Are properly associated with the owning account and
-        //  2. The page is correctly ordered between links.
-        if (prev)
-        {
-            if (account != (*prev & accountBits))
-                badLink_ = true;
-
-            if (hiLimit <= (*prev & pageBits))
-                badLink_ = true;
-        }
-
-        if (auto const next = (*sle)[~sfNextPageMin])
-        {
-            if (account != (*next & accountBits))
-                badLink_ = true;
-
-            if (hiLimit >= (*next & pageBits))
-                badLink_ = true;
-        }
-
-        {
-            auto const& nftokens = sle->getFieldArray(sfNFTokens);
-
-            // An NFTokenPage should never contain too many tokens or be empty.
-            if (std::size_t const nftokenCount = nftokens.size();
-                (!isDelete && nftokenCount == 0) || nftokenCount > dirMaxTokensPerPage)
-                invalidSize_ = true;
-
-            // If prev is valid, use it to establish a lower bound for
-            // page entries.  If prev is not valid the lower bound is zero.
-            uint256 const loLimit = prev ? *prev & pageBits : uint256(beast::zero);
-
-            // Also verify that all NFTokenIDs in the page are sorted.
-            uint256 loCmp = loLimit;
-            for (auto const& obj : nftokens)
-            {
-                uint256 const tokenID = obj[sfNFTokenID];
-                if (!nft::compareTokens(loCmp, tokenID))
-                    badSort_ = true;
-                loCmp = tokenID;
-
-                // None of the NFTs on this page should belong on lower or
-                // higher pages.
-                if (uint256 const tokenPageBits = tokenID & pageBits;
-                    tokenPageBits < loLimit || tokenPageBits >= hiLimit)
-                    badEntry_ = true;
-
-                if (auto uri = obj[~sfURI]; uri && uri->empty())
-                    badURI_ = true;
-            }
-        }
-    };
-
-    if (before)
-    {
-        check(before);
-
-        // While an account's NFToken directory contains any NFTokens, the last
-        // NFTokenPage (with 96 bits of 1 in the low part of the index) should
-        // never be deleted.
-        if (isDelete && (before->key() & nft::pageMask) == nft::pageMask &&
-            before->isFieldPresent(sfPreviousPageMin))
-        {
-            deletedFinalPage_ = true;
-        }
-    }
-
-    if (after)
-        check(after);
-
-    if (!isDelete && before && after)
-    {
-        // If the NFTokenPage
-        //  1. Has a NextMinPage field in before, but loses it in after, and
-        //  2. This is not the last page in the directory
-        // Then we have identified a corruption in the links between the
-        // NFToken pages in the NFToken directory.
-        if ((before->key() & nft::pageMask) != nft::pageMask &&
-            before->isFieldPresent(sfNextPageMin) && !after->isFieldPresent(sfNextPageMin))
-        {
-            deletedLink_ = true;
-        }
-    }
-}
-
-bool
-ValidNFTokenPage::finalize(
-    STTx const& tx,
-    TER const result,
-    XRPAmount const,
-    ReadView const& view,
-    beast::Journal const& j)
-{
-    if (badLink_)
-    {
-        JLOG(j.fatal()) << "Invariant failed: NFT page is improperly linked.";
-        return false;
-    }
-
-    if (badEntry_)
-    {
-        JLOG(j.fatal()) << "Invariant failed: NFT found in incorrect page.";
-        return false;
-    }
-
-    if (badSort_)
-    {
-        JLOG(j.fatal()) << "Invariant failed: NFTs on page are not sorted.";
-        return false;
-    }
-
-    if (badURI_)
-    {
-        JLOG(j.fatal()) << "Invariant failed: NFT contains empty URI.";
-        return false;
-    }
-
-    if (invalidSize_)
-    {
-        JLOG(j.fatal()) << "Invariant failed: NFT page has invalid size.";
-        return false;
-    }
-
-    if (view.rules().enabled(fixNFTokenPageLinks))
-    {
-        if (deletedFinalPage_)
-        {
-            JLOG(j.fatal()) << "Invariant failed: Last NFT page deleted with "
-                               "non-empty directory.";
-            return false;
-        }
-        if (deletedLink_)
-        {
-            JLOG(j.fatal()) << "Invariant failed: Lost NextMinPage link.";
-            return false;
-        }
-    }
-
-    return true;
-}
-
-//------------------------------------------------------------------------------
-void
-NFTokenCountTracking::visitEntry(
-    bool,
-    std::shared_ptr<SLE const> const& before,
-    std::shared_ptr<SLE const> const& after)
-{
-    if (before && before->getType() == ltACCOUNT_ROOT)
-    {
-        beforeMintedTotal += (*before)[~sfMintedNFTokens].value_or(0);
-        beforeBurnedTotal += (*before)[~sfBurnedNFTokens].value_or(0);
-    }
-
-    if (after && after->getType() == ltACCOUNT_ROOT)
-    {
-        afterMintedTotal += (*after)[~sfMintedNFTokens].value_or(0);
-        afterBurnedTotal += (*after)[~sfBurnedNFTokens].value_or(0);
-    }
-}
-
-bool
-NFTokenCountTracking::finalize(
-    STTx const& tx,
-    TER const result,
-    XRPAmount const,
-    ReadView const& view,
-    beast::Journal const& j)
-{
-    if (!hasPrivilege(tx, changeNFTCounts))
-    {
-        if (beforeMintedTotal != afterMintedTotal)
-        {
-            JLOG(j.fatal()) << "Invariant failed: the number of minted tokens "
-                               "changed without a mint transaction!";
-            return false;
-        }
-
-        if (beforeBurnedTotal != afterBurnedTotal)
-        {
-            JLOG(j.fatal()) << "Invariant failed: the number of burned tokens "
-                               "changed without a burn transaction!";
-            return false;
-        }
-
-        return true;
-    }
-
-    if (tx.getTxnType() == ttNFTOKEN_MINT)
-    {
-        if (result == tesSUCCESS && beforeMintedTotal >= afterMintedTotal)
-        {
-            JLOG(j.fatal()) << "Invariant failed: successful minting didn't increase "
-                               "the number of minted tokens.";
-            return false;
-        }
-
-        if (result != tesSUCCESS && beforeMintedTotal != afterMintedTotal)
-        {
-            JLOG(j.fatal()) << "Invariant failed: failed minting changed the "
-                               "number of minted tokens.";
-            return false;
-        }
-
-        if (beforeBurnedTotal != afterBurnedTotal)
-        {
-            JLOG(j.fatal()) << "Invariant failed: minting changed the number of "
-                               "burned tokens.";
-            return false;
-        }
-    }
-
-    if (tx.getTxnType() == ttNFTOKEN_BURN)
-    {
-        if (result == tesSUCCESS)
-        {
-            if (beforeBurnedTotal >= afterBurnedTotal)
-            {
-                JLOG(j.fatal()) << "Invariant failed: successful burning didn't increase "
-                                   "the number of burned tokens.";
-                return false;
-            }
-        }
-
-        if (result != tesSUCCESS && beforeBurnedTotal != afterBurnedTotal)
-        {
-            JLOG(j.fatal()) << "Invariant failed: failed burning changed the "
-                               "number of burned tokens.";
-            return false;
-        }
-
-        if (beforeMintedTotal != afterMintedTotal)
-        {
-            JLOG(j.fatal()) << "Invariant failed: burning changed the number of "
-                               "minted tokens.";
-            return false;
-        }
-    }
-
-    return true;
-}
-
-}  // namespace xrpl

src/libxrpl/tx/invariants/PermissionedDEXInvariant.cpp

@@ -1,93 +0,0 @@
-#include <xrpl/tx/invariants/PermissionedDEXInvariant.h>
-//
-#include <xrpl/basics/Log.h>
-#include <xrpl/beast/utility/instrumentation.h>
-#include <xrpl/protocol/Indexes.h>
-#include <xrpl/protocol/LedgerFormats.h>
-#include <xrpl/protocol/STArray.h>
-#include <xrpl/protocol/TxFormats.h>
-
-namespace xrpl {
-
-void
-ValidPermissionedDEX::visitEntry(
-    bool,
-    std::shared_ptr<SLE const> const& before,
-    std::shared_ptr<SLE const> const& after)
-{
-    if (after && after->getType() == ltDIR_NODE)
-    {
-        if (after->isFieldPresent(sfDomainID))
-            domains_.insert(after->getFieldH256(sfDomainID));
-    }
-
-    if (after && after->getType() == ltOFFER)
-    {
-        if (after->isFieldPresent(sfDomainID))
-            domains_.insert(after->getFieldH256(sfDomainID));
-        else
-            regularOffers_ = true;
-
-        // if a hybrid offer is missing domain or additional book, there's
-        // something wrong
-        if (after->isFlag(lsfHybrid) &&
-            (!after->isFieldPresent(sfDomainID) || !after->isFieldPresent(sfAdditionalBooks) ||
-             after->getFieldArray(sfAdditionalBooks).size() > 1))
-            badHybrids_ = true;
-    }
-}
-
-bool
-ValidPermissionedDEX::finalize(
-    STTx const& tx,
-    TER const result,
-    XRPAmount const,
-    ReadView const& view,
-    beast::Journal const& j)
-{
-    auto const txType = tx.getTxnType();
-    if ((txType != ttPAYMENT && txType != ttOFFER_CREATE) || result != tesSUCCESS)
-        return true;
-
-    // For each offercreate transaction, check if
-    // permissioned offers are valid
-    if (txType == ttOFFER_CREATE && badHybrids_)
-    {
-        JLOG(j.fatal()) << "Invariant failed: hybrid offer is malformed";
-        return false;
-    }
-
-    if (!tx.isFieldPresent(sfDomainID))
-        return true;
-
-    auto const domain = tx.getFieldH256(sfDomainID);
-
-    if (!view.exists(keylet::permissionedDomain(domain)))
-    {
-        JLOG(j.fatal()) << "Invariant failed: domain doesn't exist";
-        return false;
-    }
-
-    // for both payment and offercreate, there shouldn't be another domain
-    // that's different from the domain specified
-    for (auto const& d : domains_)
-    {
-        if (d != domain)
-        {
-            JLOG(j.fatal()) << "Invariant failed: transaction"
-                               " consumed wrong domains";
-            return false;
-        }
-    }
-
-    if (regularOffers_)
-    {
-        JLOG(j.fatal()) << "Invariant failed: domain transaction"
-                           " affected regular offers";
-        return false;
-    }
-
-    return true;
-}
-
-}  // namespace xrpl

src/libxrpl/tx/invariants/PermissionedDomainInvariant.cpp

@@ -1,162 +0,0 @@
-#include <xrpl/tx/invariants/PermissionedDomainInvariant.h>
-//
-#include <xrpl/beast/utility/instrumentation.h>
-#include <xrpl/ledger/CredentialHelpers.h>
-#include <xrpl/protocol/Feature.h>
-#include <xrpl/protocol/STArray.h>
-#include <xrpl/protocol/TxFormats.h>
-
-namespace xrpl {
-
-void
-ValidPermissionedDomain::visitEntry(
-    bool isDel,
-    std::shared_ptr<SLE const> const& before,
-    std::shared_ptr<SLE const> const& after)
-{
-    if (before && before->getType() != ltPERMISSIONED_DOMAIN)
-        return;
-    if (after && after->getType() != ltPERMISSIONED_DOMAIN)
-        return;
-
-    auto check = [isDel](std::vector<SleStatus>& sleStatus, std::shared_ptr<SLE const> const& sle) {
-        auto const& credentials = sle->getFieldArray(sfAcceptedCredentials);
-        auto const sorted = credentials::makeSorted(credentials);
-
-        SleStatus ss{credentials.size(), false, !sorted.empty(), isDel};
-
-        // If array have duplicates then all the other checks are invalid
-        if (ss.isUnique_)
-        {
-            unsigned i = 0;
-            for (auto const& cred : sorted)
-            {
-                auto const& credTx = credentials[i++];
-                ss.isSorted_ =
-                    (cred.first == credTx[sfIssuer]) && (cred.second == credTx[sfCredentialType]);
-                if (!ss.isSorted_)
-                    break;
-            }
-        }
-        sleStatus.emplace_back(std::move(ss));
-    };
-
-    if (after)
-        check(sleStatus_, after);
-}
-
-bool
-ValidPermissionedDomain::finalize(
-    STTx const& tx,
-    TER const result,
-    XRPAmount const,
-    ReadView const& view,
-    beast::Journal const& j)
-{
-    auto check = [](SleStatus const& sleStatus, beast::Journal const& j) {
-        if (!sleStatus.credentialsSize_)
-        {
-            JLOG(j.fatal()) << "Invariant failed: permissioned domain with "
-                               "no rules.";
-            return false;
-        }
-
-        if (sleStatus.credentialsSize_ > maxPermissionedDomainCredentialsArraySize)
-        {
-            JLOG(j.fatal()) << "Invariant failed: permissioned domain bad "
-                               "credentials size "
-                            << sleStatus.credentialsSize_;
-            return false;
-        }
-
-        if (!sleStatus.isUnique_)
-        {
-            JLOG(j.fatal()) << "Invariant failed: permissioned domain credentials "
-                               "aren't unique";
-            return false;
-        }
-
-        if (!sleStatus.isSorted_)
-        {
-            JLOG(j.fatal()) << "Invariant failed: permissioned domain credentials "
-                               "aren't sorted";
-            return false;
-        }
-
-        return true;
-    };
-
-    if (view.rules().enabled(fixPermissionedDomainInvariant))
-    {
-        // No permissioned domains should be affected if the transaction failed
-        if (result != tesSUCCESS)
-            // If nothing changed, all is good. If there were changes, that's
-            // bad.
-            return sleStatus_.empty();
-
-        if (sleStatus_.size() > 1)
-        {
-            JLOG(j.fatal()) << "Invariant failed: transaction affected more "
-                               "than 1 permissioned domain entry.";
-            return false;
-        }
-
-        switch (tx.getTxnType())
-        {
-            case ttPERMISSIONED_DOMAIN_SET: {
-                if (sleStatus_.empty())
-                {
-                    JLOG(j.fatal()) << "Invariant failed: no domain objects affected by "
-                                       "PermissionedDomainSet";
-                    return false;
-                }
-
-                auto const& sleStatus = sleStatus_[0];
-                if (sleStatus.isDelete_)
-                {
-                    JLOG(j.fatal()) << "Invariant failed: domain object "
-                                       "deleted by PermissionedDomainSet";
-                    return false;
-                }
-                return check(sleStatus, j);
-            }
-            case ttPERMISSIONED_DOMAIN_DELETE: {
-                if (sleStatus_.empty())
-                {
-                    JLOG(j.fatal()) << "Invariant failed: no domain objects affected by "
-                                       "PermissionedDomainDelete";
-                    return false;
-                }
-
-                if (!sleStatus_[0].isDelete_)
-                {
-                    JLOG(j.fatal()) << "Invariant failed: domain object "
-                                       "modified, but not deleted by "
-                                       "PermissionedDomainDelete";
-                    return false;
-                }
-                return true;
-            }
-            default: {
-                if (!sleStatus_.empty())
-                {
-                    JLOG(j.fatal()) << "Invariant failed: " << sleStatus_.size()
-                                    << " domain object(s) affected by an "
-                                       "unauthorized transaction. "
-                                    << tx.getTxnType();
-                    return false;
-                }
-                return true;
-            }
-        }
-    }
-    else
-    {
-        if (tx.getTxnType() != ttPERMISSIONED_DOMAIN_SET || result != tesSUCCESS ||
-            sleStatus_.empty())
-            return true;
-        return check(sleStatus_[0], j);
-    }
-}
-
-}  // namespace xrpl

src/libxrpl/tx/invariants/VaultInvariant.cpp

@@ -1,926 +0,0 @@
-#include <xrpl/tx/invariants/VaultInvariant.h>
-//
-#include <xrpl/basics/Log.h>
-#include <xrpl/beast/utility/instrumentation.h>
-#include <xrpl/ledger/View.h>
-#include <xrpl/protocol/Feature.h>
-#include <xrpl/protocol/Indexes.h>
-#include <xrpl/protocol/LedgerFormats.h>
-#include <xrpl/protocol/Protocol.h>
-#include <xrpl/protocol/SField.h>
-#include <xrpl/protocol/STNumber.h>
-#include <xrpl/protocol/TxFormats.h>
-#include <xrpl/tx/invariants/InvariantCheckPrivilege.h>
-
-namespace xrpl {
-
-ValidVault::Vault
-ValidVault::Vault::make(SLE const& from)
-{
-    XRPL_ASSERT(from.getType() == ltVAULT, "ValidVault::Vault::make : from Vault object");
-
-    ValidVault::Vault self;
-    self.key = from.key();
-    self.asset = from.at(sfAsset);
-    self.pseudoId = from.getAccountID(sfAccount);
-    self.owner = from.at(sfOwner);
-    self.shareMPTID = from.getFieldH192(sfShareMPTID);
-    self.assetsTotal = from.at(sfAssetsTotal);
-    self.assetsAvailable = from.at(sfAssetsAvailable);
-    self.assetsMaximum = from.at(sfAssetsMaximum);
-    self.lossUnrealized = from.at(sfLossUnrealized);
-    return self;
-}
-
-ValidVault::Shares
-ValidVault::Shares::make(SLE const& from)
-{
-    XRPL_ASSERT(
-        from.getType() == ltMPTOKEN_ISSUANCE,
-        "ValidVault::Shares::make : from MPTokenIssuance object");
-
-    ValidVault::Shares self;
-    self.share = MPTIssue(makeMptID(from.getFieldU32(sfSequence), from.getAccountID(sfIssuer)));
-    self.sharesTotal = from.at(sfOutstandingAmount);
-    self.sharesMaximum = from[~sfMaximumAmount].value_or(maxMPTokenAmount);
-    return self;
-}
-
-void
-ValidVault::visitEntry(
-    bool isDelete,
-    std::shared_ptr<SLE const> const& before,
-    std::shared_ptr<SLE const> const& after)
-{
-    // If `before` is empty, this means an object is being created, in which
-    // case `isDelete` must be false. Otherwise `before` and `after` are set and
-    // `isDelete` indicates whether an object is being deleted or modified.
-    XRPL_ASSERT(
-        after != nullptr && (before != nullptr || !isDelete),
-        "xrpl::ValidVault::visitEntry : some object is available");
-
-    // Number balanceDelta will capture the difference (delta) between "before"
-    // state (zero if created) and "after" state (zero if destroyed), so the
-    // invariants can validate that the change in account balances matches the
-    // change in vault balances, stored to deltas_ at the end of this function.
-    Number balanceDelta{};
-
-    std::int8_t sign = 0;
-    if (before)
-    {
-        switch (before->getType())
-        {
-            case ltVAULT:
-                beforeVault_.push_back(Vault::make(*before));
-                break;
-            case ltMPTOKEN_ISSUANCE:
-                // At this moment we have no way of telling if this object holds
-                // vault shares or something else. Save it for finalize.
-                beforeMPTs_.push_back(Shares::make(*before));
-                balanceDelta = static_cast<std::int64_t>(before->getFieldU64(sfOutstandingAmount));
-                sign = 1;
-                break;
-            case ltMPTOKEN:
-                balanceDelta = static_cast<std::int64_t>(before->getFieldU64(sfMPTAmount));
-                sign = -1;
-                break;
-            case ltACCOUNT_ROOT:
-            case ltRIPPLE_STATE:
-                balanceDelta = before->getFieldAmount(sfBalance);
-                sign = -1;
-                break;
-            default:;
-        }
-    }
-
-    if (!isDelete && after)
-    {
-        switch (after->getType())
-        {
-            case ltVAULT:
-                afterVault_.push_back(Vault::make(*after));
-                break;
-            case ltMPTOKEN_ISSUANCE:
-                // At this moment we have no way of telling if this object holds
-                // vault shares or something else. Save it for finalize.
-                afterMPTs_.push_back(Shares::make(*after));
-                balanceDelta -=
-                    Number(static_cast<std::int64_t>(after->getFieldU64(sfOutstandingAmount)));
-                sign = 1;
-                break;
-            case ltMPTOKEN:
-                balanceDelta -= Number(static_cast<std::int64_t>(after->getFieldU64(sfMPTAmount)));
-                sign = -1;
-                break;
-            case ltACCOUNT_ROOT:
-            case ltRIPPLE_STATE:
-                balanceDelta -= Number(after->getFieldAmount(sfBalance));
-                sign = -1;
-                break;
-            default:;
-        }
-    }
-
-    uint256 const key = (before ? before->key() : after->key());
-    // Append to deltas if sign is non-zero, i.e. an object of an interesting
-    // type has been updated. A transaction may update an object even when
-    // its balance has not changed, e.g. transaction fee equals the amount
-    // transferred to the account. We intentionally do not compare balanceDelta
-    // against zero, to avoid missing such updates.
-    if (sign != 0)
-        deltas_[key] = balanceDelta * sign;
-}
-
-bool
-ValidVault::finalize(
-    STTx const& tx,
-    TER const ret,
-    XRPAmount const fee,
-    ReadView const& view,
-    beast::Journal const& j)
-{
-    bool const enforce = view.rules().enabled(featureSingleAssetVault);
-
-    if (!isTesSuccess(ret))
-        return true;  // Do not perform checks
-
-    if (afterVault_.empty() && beforeVault_.empty())
-    {
-        if (hasPrivilege(tx, mustModifyVault))
-        {
-            JLOG(j.fatal()) <<  //
-                "Invariant failed: vault operation succeeded without modifying "
-                "a vault";
-            XRPL_ASSERT(enforce, "xrpl::ValidVault::finalize : vault noop invariant");
-            return !enforce;
-        }
-
-        return true;  // Not a vault operation
-    }
-    else if (!(hasPrivilege(tx, mustModifyVault) || hasPrivilege(tx, mayModifyVault)))
-    {
-        JLOG(j.fatal()) <<  //
-            "Invariant failed: vault updated by a wrong transaction type";
-        XRPL_ASSERT(
-            enforce,
-            "xrpl::ValidVault::finalize : illegal vault transaction "
-            "invariant");
-        return !enforce;  // Also not a vault operation
-    }
-
-    if (beforeVault_.size() > 1 || afterVault_.size() > 1)
-    {
-        JLOG(j.fatal()) <<  //
-            "Invariant failed: vault operation updated more than single vault";
-        XRPL_ASSERT(enforce, "xrpl::ValidVault::finalize : single vault invariant");
-        return !enforce;  // That's all we can do here
-    }
-
-    auto const txnType = tx.getTxnType();
-
-    // We do special handling for ttVAULT_DELETE first, because it's the only
-    // vault-modifying transaction without an "after" state of the vault
-    if (afterVault_.empty())
-    {
-        if (txnType != ttVAULT_DELETE)
-        {
-            JLOG(j.fatal()) <<  //
-                "Invariant failed: vault deleted by a wrong transaction type";
-            XRPL_ASSERT(
-                enforce,
-                "xrpl::ValidVault::finalize : illegal vault deletion "
-                "invariant");
-            return !enforce;  // That's all we can do here
-        }
-
-        // Note, if afterVault_ is empty then we know that beforeVault_ is not
-        // empty, as enforced at the top of this function
-        auto const& beforeVault = beforeVault_[0];
-
-        // At this moment we only know a vault is being deleted and there
-        // might be some MPTokenIssuance objects which are deleted in the
-        // same transaction. Find the one matching this vault.
-        auto const deletedShares = [&]() -> std::optional<Shares> {
-            for (auto const& e : beforeMPTs_)
-            {
-                if (e.share.getMptID() == beforeVault.shareMPTID)
-                    return std::move(e);
-            }
-            return std::nullopt;
-        }();
-
-        if (!deletedShares)
-        {
-            JLOG(j.fatal()) << "Invariant failed: deleted vault must also "
-                               "delete shares";
-            XRPL_ASSERT(enforce, "xrpl::ValidVault::finalize : shares deletion invariant");
-            return !enforce;  // That's all we can do here
-        }
-
-        bool result = true;
-        if (deletedShares->sharesTotal != 0)
-        {
-            JLOG(j.fatal()) << "Invariant failed: deleted vault must have no "
-                               "shares outstanding";
-            result = false;
-        }
-        if (beforeVault.assetsTotal != zero)
-        {
-            JLOG(j.fatal()) << "Invariant failed: deleted vault must have no "
-                               "assets outstanding";
-            result = false;
-        }
-        if (beforeVault.assetsAvailable != zero)
-        {
-            JLOG(j.fatal()) << "Invariant failed: deleted vault must have no "
-                               "assets available";
-            result = false;
-        }
-
-        return result;
-    }
-    else if (txnType == ttVAULT_DELETE)
-    {
-        JLOG(j.fatal()) << "Invariant failed: vault deletion succeeded without "
-                           "deleting a vault";
-        XRPL_ASSERT(enforce, "xrpl::ValidVault::finalize : vault deletion invariant");
-        return !enforce;  // That's all we can do here
-    }
-
-    // Note, `afterVault_.empty()` is handled above
-    auto const& afterVault = afterVault_[0];
-    XRPL_ASSERT(
-        beforeVault_.empty() || beforeVault_[0].key == afterVault.key,
-        "xrpl::ValidVault::finalize : single vault operation");
-
-    auto const updatedShares = [&]() -> std::optional<Shares> {
-        // At this moment we only know that a vault is being updated and there
-        // might be some MPTokenIssuance objects which are also updated in the
-        // same transaction. Find the one matching the shares to this vault.
-        // Note, we expect updatedMPTs collection to be extremely small. For
-        // such collections linear search is faster than lookup.
-        for (auto const& e : afterMPTs_)
-        {
-            if (e.share.getMptID() == afterVault.shareMPTID)
-                return e;
-        }
-
-        auto const sleShares = view.read(keylet::mptIssuance(afterVault.shareMPTID));
-
-        return sleShares ? std::optional<Shares>(Shares::make(*sleShares)) : std::nullopt;
-    }();
-
-    bool result = true;
-
-    // Universal transaction checks
-    if (!beforeVault_.empty())
-    {
-        auto const& beforeVault = beforeVault_[0];
-        if (afterVault.asset != beforeVault.asset || afterVault.pseudoId != beforeVault.pseudoId ||
-            afterVault.shareMPTID != beforeVault.shareMPTID)
-        {
-            JLOG(j.fatal()) << "Invariant failed: violation of vault immutable data";
-            result = false;
-        }
-    }
-
-    if (!updatedShares)
-    {
-        JLOG(j.fatal()) << "Invariant failed: updated vault must have shares";
-        XRPL_ASSERT(enforce, "xrpl::ValidVault::finalize : vault has shares invariant");
-        return !enforce;  // That's all we can do here
-    }
-
-    if (updatedShares->sharesTotal == 0)
-    {
-        if (afterVault.assetsTotal != zero)
-        {
-            JLOG(j.fatal()) << "Invariant failed: updated zero sized "
-                               "vault must have no assets outstanding";
-            result = false;
-        }
-        if (afterVault.assetsAvailable != zero)
-        {
-            JLOG(j.fatal()) << "Invariant failed: updated zero sized "
-                               "vault must have no assets available";
-            result = false;
-        }
-    }
-    else if (updatedShares->sharesTotal > updatedShares->sharesMaximum)
-    {
-        JLOG(j.fatal())  //
-            << "Invariant failed: updated shares must not exceed maximum "
-            << updatedShares->sharesMaximum;
-        result = false;
-    }
-
-    if (afterVault.assetsAvailable < zero)
-    {
-        JLOG(j.fatal()) << "Invariant failed: assets available must be positive";
-        result = false;
-    }
-
-    if (afterVault.assetsAvailable > afterVault.assetsTotal)
-    {
-        JLOG(j.fatal()) << "Invariant failed: assets available must "
-                           "not be greater than assets outstanding";
-        result = false;
-    }
-    else if (afterVault.lossUnrealized > afterVault.assetsTotal - afterVault.assetsAvailable)
-    {
-        JLOG(j.fatal())  //
-            << "Invariant failed: loss unrealized must not exceed "
-               "the difference between assets outstanding and available";
-        result = false;
-    }
-
-    if (afterVault.assetsTotal < zero)
-    {
-        JLOG(j.fatal()) << "Invariant failed: assets outstanding must be positive";
-        result = false;
-    }
-
-    if (afterVault.assetsMaximum < zero)
-    {
-        JLOG(j.fatal()) << "Invariant failed: assets maximum must be positive";
-        result = false;
-    }
-
-    // Thanks to this check we can simply do `assert(!beforeVault_.empty()` when
-    // enforcing invariants on transaction types other than ttVAULT_CREATE
-    if (beforeVault_.empty() && txnType != ttVAULT_CREATE)
-    {
-        JLOG(j.fatal()) <<  //
-            "Invariant failed: vault created by a wrong transaction type";
-        XRPL_ASSERT(enforce, "xrpl::ValidVault::finalize : vault creation invariant");
-        return !enforce;  // That's all we can do here
-    }
-
-    if (!beforeVault_.empty() && afterVault.lossUnrealized != beforeVault_[0].lossUnrealized &&
-        txnType != ttLOAN_MANAGE && txnType != ttLOAN_PAY)
-    {
-        JLOG(j.fatal()) <<  //
-            "Invariant failed: vault transaction must not change loss "
-            "unrealized";
-        result = false;
-    }
-
-    auto const beforeShares = [&]() -> std::optional<Shares> {
-        if (beforeVault_.empty())
-            return std::nullopt;
-        auto const& beforeVault = beforeVault_[0];
-
-        for (auto const& e : beforeMPTs_)
-        {
-            if (e.share.getMptID() == beforeVault.shareMPTID)
-                return std::move(e);
-        }
-        return std::nullopt;
-    }();
-
-    if (!beforeShares &&
-        (tx.getTxnType() == ttVAULT_DEPOSIT ||   //
-         tx.getTxnType() == ttVAULT_WITHDRAW ||  //
-         tx.getTxnType() == ttVAULT_CLAWBACK))
-    {
-        JLOG(j.fatal()) << "Invariant failed: vault operation succeeded "
-                           "without updating shares";
-        XRPL_ASSERT(enforce, "xrpl::ValidVault::finalize : shares noop invariant");
-        return !enforce;  // That's all we can do here
-    }
-
-    auto const& vaultAsset = afterVault.asset;
-    auto const deltaAssets = [&](AccountID const& id) -> std::optional<Number> {
-        auto const get =  //
-            [&](auto const& it, std::int8_t sign = 1) -> std::optional<Number> {
-            if (it == deltas_.end())
-                return std::nullopt;
-
-            return it->second * sign;
-        };
-
-        return std::visit(
-            [&]<typename TIss>(TIss const& issue) {
-                if constexpr (std::is_same_v<TIss, Issue>)
-                {
-                    if (isXRP(issue))
-                        return get(deltas_.find(keylet::account(id).key));
-                    return get(
-                        deltas_.find(keylet::line(id, issue).key), id > issue.getIssuer() ? -1 : 1);
-                }
-                else if constexpr (std::is_same_v<TIss, MPTIssue>)
-                {
-                    return get(deltas_.find(keylet::mptoken(issue.getMptID(), id).key));
-                }
-            },
-            vaultAsset.value());
-    };
-    auto const deltaAssetsTxAccount = [&]() -> std::optional<Number> {
-        auto ret = deltaAssets(tx[sfAccount]);
-        // Nothing returned or not XRP transaction
-        if (!ret.has_value() || !vaultAsset.native())
-            return ret;
-
-        // Delegated transaction; no need to compensate for fees
-        if (auto const delegate = tx[~sfDelegate];
-            delegate.has_value() && *delegate != tx[sfAccount])
-            return ret;
-
-        *ret += fee.drops();
-        if (*ret == zero)
-            return std::nullopt;
-
-        return ret;
-    };
-    auto const deltaShares = [&](AccountID const& id) -> std::optional<Number> {
-        auto const it = [&]() {
-            if (id == afterVault.pseudoId)
-                return deltas_.find(keylet::mptIssuance(afterVault.shareMPTID).key);
-            return deltas_.find(keylet::mptoken(afterVault.shareMPTID, id).key);
-        }();
-
-        return it != deltas_.end() ? std::optional<Number>(it->second) : std::nullopt;
-    };
-
-    auto const vaultHoldsNoAssets = [&](Vault const& vault) {
-        return vault.assetsAvailable == 0 && vault.assetsTotal == 0;
-    };
-
-    // Technically this does not need to be a lambda, but it's more
-    // convenient thanks to early "return false"; the not-so-nice
-    // alternatives are several layers of nested if/else or more complex
-    // (i.e. brittle) if statements.
-    result &= [&]() {
-        switch (txnType)
-        {
-            case ttVAULT_CREATE: {
-                bool result = true;
-
-                if (!beforeVault_.empty())
-                {
-                    JLOG(j.fatal())  //
-                        << "Invariant failed: create operation must not have "
-                           "updated a vault";
-                    result = false;
-                }
-
-                if (afterVault.assetsAvailable != zero || afterVault.assetsTotal != zero ||
-                    afterVault.lossUnrealized != zero || updatedShares->sharesTotal != 0)
-                {
-                    JLOG(j.fatal())  //
-                        << "Invariant failed: created vault must be empty";
-                    result = false;
-                }
-
-                if (afterVault.pseudoId != updatedShares->share.getIssuer())
-                {
-                    JLOG(j.fatal())  //
-                        << "Invariant failed: shares issuer and vault "
-                           "pseudo-account must be the same";
-                    result = false;
-                }
-
-                auto const sleSharesIssuer =
-                    view.read(keylet::account(updatedShares->share.getIssuer()));
-                if (!sleSharesIssuer)
-                {
-                    JLOG(j.fatal())  //
-                        << "Invariant failed: shares issuer must exist";
-                    return false;
-                }
-
-                if (!isPseudoAccount(sleSharesIssuer))
-                {
-                    JLOG(j.fatal())  //
-                        << "Invariant failed: shares issuer must be a "
-                           "pseudo-account";
-                    result = false;
-                }
-
-                if (auto const vaultId = (*sleSharesIssuer)[~sfVaultID];
-                    !vaultId || *vaultId != afterVault.key)
-                {
-                    JLOG(j.fatal())  //
-                        << "Invariant failed: shares issuer pseudo-account "
-                           "must point back to the vault";
-                    result = false;
-                }
-
-                return result;
-            }
-            case ttVAULT_SET: {
-                bool result = true;
-
-                XRPL_ASSERT(
-                    !beforeVault_.empty(), "xrpl::ValidVault::finalize : set updated a vault");
-                auto const& beforeVault = beforeVault_[0];
-
-                auto const vaultDeltaAssets = deltaAssets(afterVault.pseudoId);
-                if (vaultDeltaAssets)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: set must not change vault balance";
-                    result = false;
-                }
-
-                if (beforeVault.assetsTotal != afterVault.assetsTotal)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: set must not change assets "
-                        "outstanding";
-                    result = false;
-                }
-
-                if (afterVault.assetsMaximum > zero &&
-                    afterVault.assetsTotal > afterVault.assetsMaximum)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: set assets outstanding must not "
-                        "exceed assets maximum";
-                    result = false;
-                }
-
-                if (beforeVault.assetsAvailable != afterVault.assetsAvailable)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: set must not change assets "
-                        "available";
-                    result = false;
-                }
-
-                if (beforeShares && updatedShares &&
-                    beforeShares->sharesTotal != updatedShares->sharesTotal)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: set must not change shares "
-                        "outstanding";
-                    result = false;
-                }
-
-                return result;
-            }
-            case ttVAULT_DEPOSIT: {
-                bool result = true;
-
-                XRPL_ASSERT(
-                    !beforeVault_.empty(), "xrpl::ValidVault::finalize : deposit updated a vault");
-                auto const& beforeVault = beforeVault_[0];
-
-                auto const vaultDeltaAssets = deltaAssets(afterVault.pseudoId);
-
-                if (!vaultDeltaAssets)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: deposit must change vault balance";
-                    return false;  // That's all we can do
-                }
-
-                if (*vaultDeltaAssets > tx[sfAmount])
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: deposit must not change vault "
-                        "balance by more than deposited amount";
-                    result = false;
-                }
-
-                if (*vaultDeltaAssets <= zero)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: deposit must increase vault balance";
-                    result = false;
-                }
-
-                // Any payments (including deposits) made by the issuer
-                // do not change their balance, but create funds instead.
-                bool const issuerDeposit = [&]() -> bool {
-                    if (vaultAsset.native())
-                        return false;
-                    return tx[sfAccount] == vaultAsset.getIssuer();
-                }();
-
-                if (!issuerDeposit)
-                {
-                    auto const accountDeltaAssets = deltaAssetsTxAccount();
-                    if (!accountDeltaAssets)
-                    {
-                        JLOG(j.fatal()) <<  //
-                            "Invariant failed: deposit must change depositor "
-                            "balance";
-                        return false;
-                    }
-
-                    if (*accountDeltaAssets >= zero)
-                    {
-                        JLOG(j.fatal()) <<  //
-                            "Invariant failed: deposit must decrease depositor "
-                            "balance";
-                        result = false;
-                    }
-
-                    if (*accountDeltaAssets * -1 != *vaultDeltaAssets)
-                    {
-                        JLOG(j.fatal()) <<  //
-                            "Invariant failed: deposit must change vault and "
-                            "depositor balance by equal amount";
-                        result = false;
-                    }
-                }
-
-                if (afterVault.assetsMaximum > zero &&
-                    afterVault.assetsTotal > afterVault.assetsMaximum)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: deposit assets outstanding must not "
-                        "exceed assets maximum";
-                    result = false;
-                }
-
-                auto const accountDeltaShares = deltaShares(tx[sfAccount]);
-                if (!accountDeltaShares)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: deposit must change depositor "
-                        "shares";
-                    return false;  // That's all we can do
-                }
-
-                if (*accountDeltaShares <= zero)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: deposit must increase depositor "
-                        "shares";
-                    result = false;
-                }
-
-                auto const vaultDeltaShares = deltaShares(afterVault.pseudoId);
-                if (!vaultDeltaShares || *vaultDeltaShares == zero)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: deposit must change vault shares";
-                    return false;  // That's all we can do
-                }
-
-                if (*vaultDeltaShares * -1 != *accountDeltaShares)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: deposit must change depositor and "
-                        "vault shares by equal amount";
-                    result = false;
-                }
-
-                if (beforeVault.assetsTotal + *vaultDeltaAssets != afterVault.assetsTotal)
-                {
-                    JLOG(j.fatal()) << "Invariant failed: deposit and assets "
-                                       "outstanding must add up";
-                    result = false;
-                }
-                if (beforeVault.assetsAvailable + *vaultDeltaAssets != afterVault.assetsAvailable)
-                {
-                    JLOG(j.fatal()) << "Invariant failed: deposit and assets "
-                                       "available must add up";
-                    result = false;
-                }
-
-                return result;
-            }
-            case ttVAULT_WITHDRAW: {
-                bool result = true;
-
-                XRPL_ASSERT(
-                    !beforeVault_.empty(),
-                    "xrpl::ValidVault::finalize : withdrawal updated a "
-                    "vault");
-                auto const& beforeVault = beforeVault_[0];
-
-                auto const vaultDeltaAssets = deltaAssets(afterVault.pseudoId);
-
-                if (!vaultDeltaAssets)
-                {
-                    JLOG(j.fatal()) << "Invariant failed: withdrawal must "
-                                       "change vault balance";
-                    return false;  // That's all we can do
-                }
-
-                if (*vaultDeltaAssets >= zero)
-                {
-                    JLOG(j.fatal()) << "Invariant failed: withdrawal must "
-                                       "decrease vault balance";
-                    result = false;
-                }
-
-                // Any payments (including withdrawal) going to the issuer
-                // do not change their balance, but destroy funds instead.
-                bool const issuerWithdrawal = [&]() -> bool {
-                    if (vaultAsset.native())
-                        return false;
-                    auto const destination = tx[~sfDestination].value_or(tx[sfAccount]);
-                    return destination == vaultAsset.getIssuer();
-                }();
-
-                if (!issuerWithdrawal)
-                {
-                    auto const accountDeltaAssets = deltaAssetsTxAccount();
-                    auto const otherAccountDelta = [&]() -> std::optional<Number> {
-                        if (auto const destination = tx[~sfDestination];
-                            destination && *destination != tx[sfAccount])
-                            return deltaAssets(*destination);
-                        return std::nullopt;
-                    }();
-
-                    if (accountDeltaAssets.has_value() == otherAccountDelta.has_value())
-                    {
-                        JLOG(j.fatal()) <<  //
-                            "Invariant failed: withdrawal must change one "
-                            "destination balance";
-                        return false;
-                    }
-
-                    auto const destinationDelta =  //
-                        accountDeltaAssets ? *accountDeltaAssets : *otherAccountDelta;
-
-                    if (destinationDelta <= zero)
-                    {
-                        JLOG(j.fatal()) <<  //
-                            "Invariant failed: withdrawal must increase "
-                            "destination balance";
-                        result = false;
-                    }
-
-                    if (*vaultDeltaAssets * -1 != destinationDelta)
-                    {
-                        JLOG(j.fatal()) <<  //
-                            "Invariant failed: withdrawal must change vault "
-                            "and destination balance by equal amount";
-                        result = false;
-                    }
-                }
-
-                auto const accountDeltaShares = deltaShares(tx[sfAccount]);
-                if (!accountDeltaShares)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: withdrawal must change depositor "
-                        "shares";
-                    return false;
-                }
-
-                if (*accountDeltaShares >= zero)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: withdrawal must decrease depositor "
-                        "shares";
-                    result = false;
-                }
-
-                auto const vaultDeltaShares = deltaShares(afterVault.pseudoId);
-                if (!vaultDeltaShares || *vaultDeltaShares == zero)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: withdrawal must change vault shares";
-                    return false;  // That's all we can do
-                }
-
-                if (*vaultDeltaShares * -1 != *accountDeltaShares)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: withdrawal must change depositor "
-                        "and vault shares by equal amount";
-                    result = false;
-                }
-
-                // Note, vaultBalance is negative (see check above)
-                if (beforeVault.assetsTotal + *vaultDeltaAssets != afterVault.assetsTotal)
-                {
-                    JLOG(j.fatal()) << "Invariant failed: withdrawal and "
-                                       "assets outstanding must add up";
-                    result = false;
-                }
-
-                if (beforeVault.assetsAvailable + *vaultDeltaAssets != afterVault.assetsAvailable)
-                {
-                    JLOG(j.fatal()) << "Invariant failed: withdrawal and "
-                                       "assets available must add up";
-                    result = false;
-                }
-
-                return result;
-            }
-            case ttVAULT_CLAWBACK: {
-                bool result = true;
-
-                XRPL_ASSERT(
-                    !beforeVault_.empty(), "xrpl::ValidVault::finalize : clawback updated a vault");
-                auto const& beforeVault = beforeVault_[0];
-
-                if (vaultAsset.native() || vaultAsset.getIssuer() != tx[sfAccount])
-                {
-                    // The owner can use clawback to force-burn shares when the
-                    // vault is empty but there are outstanding shares
-                    if (!(beforeShares && beforeShares->sharesTotal > 0 &&
-                          vaultHoldsNoAssets(beforeVault) && beforeVault.owner == tx[sfAccount]))
-                    {
-                        JLOG(j.fatal()) <<  //
-                            "Invariant failed: clawback may only be performed "
-                            "by the asset issuer, or by the vault owner of an "
-                            "empty vault";
-                        return false;  // That's all we can do
-                    }
-                }
-
-                auto const vaultDeltaAssets = deltaAssets(afterVault.pseudoId);
-                if (vaultDeltaAssets)
-                {
-                    if (*vaultDeltaAssets >= zero)
-                    {
-                        JLOG(j.fatal()) <<  //
-                            "Invariant failed: clawback must decrease vault "
-                            "balance";
-                        result = false;
-                    }
-
-                    if (beforeVault.assetsTotal + *vaultDeltaAssets != afterVault.assetsTotal)
-                    {
-                        JLOG(j.fatal()) <<  //
-                            "Invariant failed: clawback and assets outstanding "
-                            "must add up";
-                        result = false;
-                    }
-
-                    if (beforeVault.assetsAvailable + *vaultDeltaAssets !=
-                        afterVault.assetsAvailable)
-                    {
-                        JLOG(j.fatal()) <<  //
-                            "Invariant failed: clawback and assets available "
-                            "must add up";
-                        result = false;
-                    }
-                }
-                else if (!vaultHoldsNoAssets(beforeVault))
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: clawback must change vault balance";
-                    return false;  // That's all we can do
-                }
-
-                auto const accountDeltaShares = deltaShares(tx[sfHolder]);
-                if (!accountDeltaShares)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: clawback must change holder shares";
-                    return false;  // That's all we can do
-                }
-
-                if (*accountDeltaShares >= zero)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: clawback must decrease holder "
-                        "shares";
-                    result = false;
-                }
-
-                auto const vaultDeltaShares = deltaShares(afterVault.pseudoId);
-                if (!vaultDeltaShares || *vaultDeltaShares == zero)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: clawback must change vault shares";
-                    return false;  // That's all we can do
-                }
-
-                if (*vaultDeltaShares * -1 != *accountDeltaShares)
-                {
-                    JLOG(j.fatal()) <<  //
-                        "Invariant failed: clawback must change holder and "
-                        "vault shares by equal amount";
-                    result = false;
-                }
-
-                return result;
-            }
-
-            case ttLOAN_SET:
-            case ttLOAN_MANAGE:
-            case ttLOAN_PAY: {
-                // TBD
-                return true;
-            }
-
-            default:
-                // LCOV_EXCL_START
-                UNREACHABLE("xrpl::ValidVault::finalize : unknown transaction type");
-                return false;
-                // LCOV_EXCL_STOP
-        }
-    }();
-
-    if (!result)
-    {
-        // The comment at the top of this file starting with "assert(enforce)"
-        // explains this assert.
-        XRPL_ASSERT(enforce, "xrpl::ValidVault::finalize : vault invariants");
-        return !enforce;
-    }
-
-    return true;
-}
-
-}  // namespace xrpl

src/libxrpl/tx/transactors/PermissionedDomain/PermissionedDomainSet.cpp

@@ -1,9 +1,10 @@
-#include <xrpl/tx/transactors/PermissionedDomain/PermissionedDomainSet.h>
-//
 #include <xrpl/ledger/CredentialHelpers.h>
 #include <xrpl/ledger/View.h>
 #include <xrpl/protocol/STObject.h>
 #include <xrpl/protocol/TxFlags.h>
+#include <xrpl/tx/transactors/PermissionedDomain/PermissionedDomainSet.h>
+
+#include <optional>
 
 namespace xrpl {
 

src/test/app/LedgerReplay_test.cpp

@@ -85,7 +85,12 @@ public:
     }
 
     virtual void
-    acquireAsync(uint256 const& hash, std::uint32_t seq, InboundLedger::Reason reason) override
+    acquireAsync(
+        JobType type,
+        std::string const& name,
+        uint256 const& hash,
+        std::uint32_t seq,
+        InboundLedger::Reason reason) override
     {
     }
 

src/test/app/Vault_test.cpp

@@ -5340,20 +5340,20 @@ class Vault_test : public beast::unit_test::suite
             env.close();
 
             // 2. Mantissa larger than uint64 max
-            env.set_parse_failure_expected(true);
             try
             {
                 tx[sfAssetsMaximum] = "18446744073709551617e5";  // uint64 max + 1
                 env(tx, THISLINE);
-                BEAST_EXPECTS(false, "Expected parse_error for mantissa larger than uint64 max");
+                BEAST_EXPECT(false);
             }
             catch (parse_error const& e)
             {
                 using namespace std::string_literals;
                 BEAST_EXPECT(
-                    e.what() == "invalidParamsField 'tx_json.AssetsMaximum' has invalid data."s);
+                    e.what() ==
+                    "invalidParamsField 'tx_json.AssetsMaximum' has invalid "
+                    "data."s);
             }
-            env.set_parse_failure_expected(false);
         }
     }
 

src/test/basics/CanProcess_test.cpp

@@ -0,0 +1,165 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012-2016 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include <xrpl/basics/CanProcess.h>
+#include <xrpl/beast/unit_test.h>
+
+#include <memory>
+
+namespace ripple {
+namespace test {
+
+struct CanProcess_test : beast::unit_test::suite
+{
+    template <class Mutex, class Collection, class Item>
+    void
+    test(
+        std::string const& name,
+        Mutex& mtx,
+        Collection& collection,
+        std::vector<Item> const& items)
+    {
+        testcase(name);
+
+        if (!BEAST_EXPECT(!items.empty()))
+            return;
+        if (!BEAST_EXPECT(collection.empty()))
+            return;
+
+        // CanProcess objects can't be copied or moved. To make that easier,
+        // store shared_ptrs
+        std::vector<std::shared_ptr<CanProcess>> trackers;
+        // Fill up the vector with two CanProcess for each Item. The first
+        // inserts the item into the collection and is "good". The second does
+        // not and is "bad".
+        for (int i = 0; i < items.size(); ++i)
+        {
+            {
+                auto const& good =
+                    trackers.emplace_back(std::make_shared<CanProcess>(mtx, collection, items[i]));
+                BEAST_EXPECT(*good);
+            }
+            BEAST_EXPECT(trackers.size() == (2 * i) + 1);
+            BEAST_EXPECT(collection.size() == i + 1);
+            {
+                auto const& bad =
+                    trackers.emplace_back(std::make_shared<CanProcess>(mtx, collection, items[i]));
+                BEAST_EXPECT(!*bad);
+            }
+            BEAST_EXPECT(trackers.size() == 2 * (i + 1));
+            BEAST_EXPECT(collection.size() == i + 1);
+        }
+        BEAST_EXPECT(collection.size() == items.size());
+        // Now remove the items from the vector<CanProcess> two at a time, and
+        // try to get another CanProcess for that item.
+        for (int i = 0; i < items.size(); ++i)
+        {
+            // Remove the "bad" one in the second position
+            // This will have no effect on the collection
+            {
+                auto const iter = trackers.begin() + 1;
+                BEAST_EXPECT(!**iter);
+                trackers.erase(iter);
+            }
+            BEAST_EXPECT(trackers.size() == (2 * items.size()) - 1);
+            BEAST_EXPECT(collection.size() == items.size());
+            {
+                // Append a new "bad" one
+                auto const& bad =
+                    trackers.emplace_back(std::make_shared<CanProcess>(mtx, collection, items[i]));
+                BEAST_EXPECT(!*bad);
+            }
+            BEAST_EXPECT(trackers.size() == 2 * items.size());
+            BEAST_EXPECT(collection.size() == items.size());
+
+            // Remove the "good" one from the front
+            {
+                auto const iter = trackers.begin();
+                BEAST_EXPECT(**iter);
+                trackers.erase(iter);
+            }
+            BEAST_EXPECT(trackers.size() == (2 * items.size()) - 1);
+            BEAST_EXPECT(collection.size() == items.size() - 1);
+            {
+                // Append a new "good" one
+                auto const& good =
+                    trackers.emplace_back(std::make_shared<CanProcess>(mtx, collection, items[i]));
+                BEAST_EXPECT(*good);
+            }
+            BEAST_EXPECT(trackers.size() == 2 * items.size());
+            BEAST_EXPECT(collection.size() == items.size());
+        }
+        // Now remove them all two at a time
+        for (int i = items.size() - 1; i >= 0; --i)
+        {
+            // Remove the "bad" one from the front
+            {
+                auto const iter = trackers.begin();
+                BEAST_EXPECT(!**iter);
+                trackers.erase(iter);
+            }
+            BEAST_EXPECT(trackers.size() == (2 * i) + 1);
+            BEAST_EXPECT(collection.size() == i + 1);
+            // Remove the "good" one now in front
+            {
+                auto const iter = trackers.begin();
+                BEAST_EXPECT(**iter);
+                trackers.erase(iter);
+            }
+            BEAST_EXPECT(trackers.size() == 2 * i);
+            BEAST_EXPECT(collection.size() == i);
+        }
+        BEAST_EXPECT(trackers.empty());
+        BEAST_EXPECT(collection.empty());
+    }
+
+    void
+    run() override
+    {
+        {
+            std::mutex m;
+            std::set<int> collection;
+            std::vector<int> const items{1, 2, 3, 4, 5};
+            test("set of int", m, collection, items);
+        }
+        {
+            std::mutex m;
+            std::set<std::string> collection;
+            std::vector<std::string> const items{"one", "two", "three", "four", "five"};
+            test("set of string", m, collection, items);
+        }
+        {
+            std::mutex m;
+            std::unordered_set<char> collection;
+            std::vector<char> const items{'1', '2', '3', '4', '5'};
+            test("unorderd_set of char", m, collection, items);
+        }
+        {
+            std::mutex m;
+            std::unordered_set<std::uint64_t> collection;
+            std::vector<std::uint64_t> const items{100u, 1000u, 150u, 4u, 0u};
+            test("unordered_set of uint64_t", m, collection, items);
+        }
+    }
+};
+
+BEAST_DEFINE_TESTSUITE(CanProcess, ripple_basics, ripple);
+
+}  // namespace test
+}  // namespace ripple

src/test/nodestore/TestBase.h

@@ -138,7 +138,7 @@ public:
         {
             std::shared_ptr<NodeObject> object;
 
-            Status const status = backend.fetch(batch[i]->getHash(), &object);
+            Status const status = backend.fetch(batch[i]->getHash().cbegin(), &object);
 
             BEAST_EXPECT(status == ok);
 
@@ -158,7 +158,7 @@ public:
         {
             std::shared_ptr<NodeObject> object;
 
-            Status const status = backend.fetch(batch[i]->getHash(), &object);
+            Status const status = backend.fetch(batch[i]->getHash().cbegin(), &object);
 
             BEAST_EXPECT(status == notFound);
         }

src/test/nodestore/Timing_test.cpp

@@ -314,7 +314,7 @@ public:
                     std::shared_ptr<NodeObject> obj;
                     std::shared_ptr<NodeObject> result;
                     obj = seq1_.obj(dist_(gen_));
-                    backend_.fetch(obj->getHash(), &result);
+                    backend_.fetch(obj->getHash().data(), &result);
                     suite_.expect(result && isSame(result, obj));
                 }
                 catch (std::exception const& e)
@@ -377,9 +377,9 @@ public:
             {
                 try
                 {
-                    auto const hash = seq2_.key(i);
+                    auto const key = seq2_.key(i);
                     std::shared_ptr<NodeObject> result;
-                    backend_.fetch(hash, &result);
+                    backend_.fetch(key.data(), &result);
                     suite_.expect(!result);
                 }
                 catch (std::exception const& e)
@@ -449,9 +449,9 @@ public:
                 {
                     if (rand_(gen_) < missingNodePercent)
                     {
-                        auto const hash = seq2_.key(dist_(gen_));
+                        auto const key = seq2_.key(dist_(gen_));
                         std::shared_ptr<NodeObject> result;
-                        backend_.fetch(hash, &result);
+                        backend_.fetch(key.data(), &result);
                         suite_.expect(!result);
                     }
                     else
@@ -459,7 +459,7 @@ public:
                         std::shared_ptr<NodeObject> obj;
                         std::shared_ptr<NodeObject> result;
                         obj = seq1_.obj(dist_(gen_));
-                        backend_.fetch(obj->getHash(), &result);
+                        backend_.fetch(obj->getHash().data(), &result);
                         suite_.expect(result && isSame(result, obj));
                     }
                 }
@@ -540,7 +540,8 @@ public:
                         std::shared_ptr<NodeObject> result;
                         auto const j = older_(gen_);
                         obj = seq1_.obj(j);
-                        backend_.fetch(obj->getHash(), &result);
+                        std::shared_ptr<NodeObject> result1;
+                        backend_.fetch(obj->getHash().data(), &result);
                         suite_.expect(result != nullptr);
                         suite_.expect(isSame(result, obj));
                     }
@@ -558,7 +559,7 @@ public:
                                 std::shared_ptr<NodeObject> result;
                                 auto const j = recent_(gen_);
                                 obj = seq1_.obj(j);
-                                backend_.fetch(obj->getHash(), &result);
+                                backend_.fetch(obj->getHash().data(), &result);
                                 suite_.expect(!result || isSame(result, obj));
                                 break;
                             }

src/xrpld/app/consensus/RCLConsensus.cpp

@@ -107,10 +107,8 @@ RCLConsensus::Adaptor::acquireLedger(LedgerHash const& hash)
             // Tell the ledger acquire system that we need the consensus ledger
             acquiringLedger_ = hash;
 
-            app_.getJobQueue().addJob(jtADVANCE, "GetConsL1", [id = hash, &app = app_, this]() {
-                JLOG(j_.debug()) << "JOB advanceLedger getConsensusLedger1 started";
-                app.getInboundLedgers().acquireAsync(id, 0, InboundLedger::Reason::CONSENSUS);
-            });
+            app_.getInboundLedgers().acquireAsync(
+                jtADVANCE, "GetConsL1", hash, 0, InboundLedger::Reason::CONSENSUS);
         }
         return std::nullopt;
     }
@@ -985,7 +983,7 @@ void
 RCLConsensus::Adaptor::updateOperatingMode(std::size_t const positions) const
 {
     if (!positions && app_.getOPs().isFull())
-        app_.getOPs().setMode(OperatingMode::CONNECTED);
+        app_.getOPs().setMode(OperatingMode::CONNECTED, "updateOperatingMode: no positions");
 }
 
 void

src/xrpld/app/consensus/RCLValidations.cpp

@@ -117,12 +117,8 @@ RCLValidationsAdaptor::acquire(LedgerHash const& hash)
     {
         JLOG(j_.warn()) << "Need validated ledger for preferred ledger analysis " << hash;
 
-        Application* pApp = &app_;
-
-        app_.getJobQueue().addJob(jtADVANCE, "GetConsL2", [pApp, hash, this]() {
-            JLOG(j_.debug()) << "JOB advanceLedger getConsensusLedger2 started";
-            pApp->getInboundLedgers().acquireAsync(hash, 0, InboundLedger::Reason::CONSENSUS);
-        });
+        app_.getInboundLedgers().acquireAsync(
+            jtADVANCE, "GetConsL2", hash, 0, InboundLedger::Reason::CONSENSUS);
         return std::nullopt;
     }
 

src/xrpld/app/ledger/InboundLedgers.h

@@ -26,7 +26,12 @@ public:
     // Queue. TODO review whether all callers of acquire() can use this
     // instead. Inbound ledger acquisition is asynchronous anyway.
     virtual void
-    acquireAsync(uint256 const& hash, std::uint32_t seq, InboundLedger::Reason reason) = 0;
+    acquireAsync(
+        JobType type,
+        std::string const& name,
+        uint256 const& hash,
+        std::uint32_t seq,
+        InboundLedger::Reason reason) = 0;
 
     virtual std::shared_ptr<InboundLedger>
     find(LedgerHash const& hash) = 0;

src/xrpld/app/ledger/detail/InboundLedger.cpp

@@ -353,7 +353,14 @@ InboundLedger::onTimer(bool wasProgress, ScopedLockType&)
 
     if (!wasProgress)
     {
-        checkLocal();
+        if (checkLocal())
+        {
+            // Done. Something else (probably consensus) built the ledger
+            // locally while waiting for data (or possibly before requesting)
+            XRPL_ASSERT(isDone(), "ripple::InboundLedger::onTimer : done");
+            JLOG(journal_.info()) << "Finished while waiting " << hash_;
+            return;
+        }
 
         mByHash = true;
 

src/xrpld/app/ledger/detail/InboundLedgers.cpp

@@ -2,9 +2,9 @@
 #include <xrpld/app/ledger/LedgerMaster.h>
 #include <xrpld/app/main/Application.h>
 
+#include <xrpl/basics/CanProcess.h>
 #include <xrpl/basics/DecayingSample.h>
 #include <xrpl/basics/Log.h>
-#include <xrpl/basics/scope.h>
 #include <xrpl/beast/container/aged_map.h>
 #include <xrpl/core/JobQueue.h>
 #include <xrpl/core/PerfLog.h>
@@ -59,12 +59,15 @@ public:
                 (reason != InboundLedger::Reason::CONSENSUS))
                 return {};
 
+            std::stringstream ss;
+
             bool isNew = true;
             std::shared_ptr<InboundLedger> inbound;
             {
                 ScopedLockType sl(mLock);
                 if (stopping_)
                 {
+                    JLOG(j_.debug()) << "Abort(stopping): " << ss.str();
                     return {};
                 }
 
@@ -83,47 +86,61 @@ public:
                     ++mCounter;
                 }
             }
+            ss << " IsNew: " << (isNew ? "true" : "false");
 
             if (inbound->isFailed())
+            {
+                JLOG(j_.debug()) << "Abort(failed): " << ss.str();
                 return {};
+            }
 
             if (!isNew)
                 inbound->update(seq);
 
             if (!inbound->isComplete())
+            {
+                JLOG(j_.debug()) << "InProgress: " << ss.str();
                 return {};
+            }
 
+            JLOG(j_.debug()) << "Complete: " << ss.str();
             return inbound->getLedger();
         };
         using namespace std::chrono_literals;
-        std::shared_ptr<Ledger const> ledger =
-            perf::measureDurationAndLog(doAcquire, "InboundLedgersImp::acquire", 500ms, j_);
-
-        return ledger;
+        return perf::measureDurationAndLog(doAcquire, "InboundLedgersImp::acquire", 500ms, j_);
     }
 
     void
-    acquireAsync(uint256 const& hash, std::uint32_t seq, InboundLedger::Reason reason) override
+    acquireAsync(
+        JobType type,
+        std::string const& name,
+        uint256 const& hash,
+        std::uint32_t seq,
+        InboundLedger::Reason reason) override
     {
-        std::unique_lock lock(acquiresMutex_);
-        try
+        if (auto check = std::make_shared<CanProcess const>(acquiresMutex_, pendingAcquires_, hash);
+            *check)
         {
-            if (pendingAcquires_.contains(hash))
-                return;
-            pendingAcquires_.insert(hash);
-            scope_unlock unlock(lock);
-            acquire(hash, seq, reason);
+            app_.getJobQueue().addJob(type, name, [check, name, hash, seq, reason, this]() {
+                JLOG(j_.debug()) << "JOB acquireAsync " << name << " started ";
+                try
+                {
+                    acquire(hash, seq, reason);
+                }
+                catch (std::exception const& e)
+                {
+                    JLOG(j_.warn()) << "Exception thrown for acquiring new "
+                                       "inbound ledger "
+                                    << hash << ": " << e.what();
+                }
+                catch (...)
+                {
+                    JLOG(j_.warn()) << "Unknown exception thrown for acquiring new "
+                                       "inbound ledger "
+                                    << hash;
+                }
+            });
         }
-        catch (std::exception const& e)
-        {
-            JLOG(j_.warn()) << "Exception thrown for acquiring new inbound ledger " << hash << ": "
-                            << e.what();
-        }
-        catch (...)
-        {
-            JLOG(j_.warn()) << "Unknown exception thrown for acquiring new inbound ledger " << hash;
-        }
-        pendingAcquires_.erase(hash);
     }
 
     std::shared_ptr<InboundLedger>

src/xrpld/app/ledger/detail/LedgerMaster.cpp

@@ -907,8 +907,9 @@ LedgerMaster::checkAccept(std::shared_ptr<Ledger const> const& ledger)
         return;
     }
 
-    JLOG(m_journal.info()) << "Advancing accepted ledger to " << ledger->header().seq
-                           << " with >= " << minVal << " validations";
+    JLOG(m_journal.info()) << "Advancing accepted ledger to " << ledger->header().seq << " ("
+                           << to_short_string(ledger->header().hash) << ") with >= " << minVal
+                           << " validations";
 
     ledger->setValidated();
     ledger->setFull();

src/xrpld/app/ledger/detail/TimeoutCounter.cpp

@@ -13,7 +13,8 @@ TimeoutCounter::TimeoutCounter(
     QueueJobParameter&& jobParameter,
     beast::Journal journal)
     : app_(app)
-    , journal_(journal)
+    , sink_(journal, to_short_string(hash) + " ")
+    , journal_(sink_)
     , hash_(hash)
     , timeouts_(0)
     , complete_(false)
@@ -33,6 +34,7 @@ TimeoutCounter::setTimer(ScopedLockType& sl)
 {
     if (isDone())
         return;
+    JLOG(journal_.debug()) << "Setting timer for " << timerInterval_.count() << "ms";
     timer_.expires_after(timerInterval_);
     timer_.async_wait([wptr = pmDowncast()](boost::system::error_code const& ec) {
         if (ec == boost::asio::error::operation_aborted)
@@ -40,6 +42,10 @@ TimeoutCounter::setTimer(ScopedLockType& sl)
 
         if (auto ptr = wptr.lock())
         {
+            JLOG(ptr->journal_.debug())
+                << "timer: ec: " << ec
+                << " (operation_aborted: " << boost::asio::error::operation_aborted << " - "
+                << (ec == boost::asio::error::operation_aborted ? "aborted" : "other") << ")";
             ScopedLockType sl(ptr->mtx_);
             ptr->queueJob(sl);
         }

src/xrpld/app/ledger/detail/TimeoutCounter.h

@@ -3,6 +3,7 @@
 #include <xrpld/app/main/Application.h>
 
 #include <xrpl/beast/utility/Journal.h>
+#include <xrpl/beast/utility/WrappedSink.h>
 #include <xrpl/core/Job.h>
 
 #include <boost/asio/basic_waitable_timer.hpp>
@@ -103,6 +104,7 @@ protected:
     // Used in this class for access to boost::asio::io_context and
     // xrpl::Overlay. Used in subtypes for the kitchen sink.
     Application& app_;
+    beast::WrappedSink sink_;
     beast::Journal journal_;
     mutable std::recursive_mutex mtx_;
 

src/xrpld/app/misc/NetworkOPs.cpp

@@ -30,10 +30,10 @@
 #include <xrpld/rpc/MPTokenIssuanceID.h>
 #include <xrpld/rpc/ServerHandler.h>
 
+#include <xrpl/basics/CanProcess.h>
 #include <xrpl/basics/UptimeClock.h>
 #include <xrpl/basics/mulDiv.h>
 #include <xrpl/basics/safe_cast.h>
-#include <xrpl/basics/scope.h>
 #include <xrpl/beast/utility/rngfill.h>
 #include <xrpl/core/HashRouter.h>
 #include <xrpl/core/NetworkIDService.h>
@@ -396,7 +396,7 @@ public:
     isFull() override;
 
     void
-    setMode(OperatingMode om) override;
+    setMode(OperatingMode om, char const* reason) override;
 
     bool
     isBlocked() override;
@@ -841,7 +841,7 @@ NetworkOPsImp::strOperatingMode(bool const admin /* = false */) const
 inline void
 NetworkOPsImp::setStandAlone()
 {
-    setMode(OperatingMode::FULL);
+    setMode(OperatingMode::FULL, "setStandAlone");
 }
 
 inline void
@@ -984,7 +984,7 @@ NetworkOPsImp::processHeartbeatTimer()
         {
             if (mMode != OperatingMode::DISCONNECTED)
             {
-                setMode(OperatingMode::DISCONNECTED);
+                setMode(OperatingMode::DISCONNECTED, "Heartbeat: insufficient peers");
                 std::stringstream ss;
                 ss << "Node count (" << numPeers << ") has fallen "
                    << "below required minimum (" << minPeerCount_ << ").";
@@ -1008,7 +1008,7 @@ NetworkOPsImp::processHeartbeatTimer()
 
         if (mMode == OperatingMode::DISCONNECTED)
         {
-            setMode(OperatingMode::CONNECTED);
+            setMode(OperatingMode::CONNECTED, "Heartbeat: sufficient peers");
             JLOG(m_journal.info()) << "Node count (" << numPeers << ") is sufficient.";
             CLOG(clog.ss()) << "setting mode to CONNECTED based on " << numPeers << " peers. ";
         }
@@ -1018,9 +1018,9 @@ NetworkOPsImp::processHeartbeatTimer()
         auto origMode = mMode.load();
         CLOG(clog.ss()) << "mode: " << strOperatingMode(origMode, true);
         if (mMode == OperatingMode::SYNCING)
-            setMode(OperatingMode::SYNCING);
+            setMode(OperatingMode::SYNCING, "Heartbeat: check syncing");
         else if (mMode == OperatingMode::CONNECTED)
-            setMode(OperatingMode::CONNECTED);
+            setMode(OperatingMode::CONNECTED, "Heartbeat: check connected");
         auto newMode = mMode.load();
         if (origMode != newMode)
         {
@@ -1710,7 +1710,7 @@ void
 NetworkOPsImp::setAmendmentBlocked()
 {
     amendmentBlocked_ = true;
-    setMode(OperatingMode::CONNECTED);
+    setMode(OperatingMode::CONNECTED, "setAmendmentBlocked");
 }
 
 inline bool
@@ -1741,7 +1741,7 @@ void
 NetworkOPsImp::setUNLBlocked()
 {
     unlBlocked_ = true;
-    setMode(OperatingMode::CONNECTED);
+    setMode(OperatingMode::CONNECTED, "setUNLBlocked");
 }
 
 inline void
@@ -1837,7 +1837,7 @@ NetworkOPsImp::checkLastClosedLedger(Overlay::PeerSequence const& peerList, uint
 
     if ((mMode == OperatingMode::TRACKING) || (mMode == OperatingMode::FULL))
     {
-        setMode(OperatingMode::CONNECTED);
+        setMode(OperatingMode::CONNECTED, "check LCL: not on consensus ledger");
     }
 
     if (consensus)
@@ -1922,8 +1922,8 @@ NetworkOPsImp::beginConsensus(
         // this shouldn't happen unless we jump ledgers
         if (mMode == OperatingMode::FULL)
         {
-            JLOG(m_journal.warn()) << "Don't have LCL, going to tracking";
-            setMode(OperatingMode::TRACKING);
+            JLOG(m_journal.warn()) << "beginConsensus Don't have LCL, going to tracking";
+            setMode(OperatingMode::TRACKING, "beginConsensus: No LCL");
             CLOG(clog) << "beginConsensus Don't have LCL, going to tracking. ";
         }
 
@@ -2052,7 +2052,7 @@ NetworkOPsImp::endConsensus(std::unique_ptr<std::stringstream> const& clog)
         // validations we have for LCL.  If the ledger is good enough, go to
         // TRACKING - TODO
         if (!needNetworkLedger_)
-            setMode(OperatingMode::TRACKING);
+            setMode(OperatingMode::TRACKING, "endConsensus: check tracking");
     }
 
     if (((mMode == OperatingMode::CONNECTED) || (mMode == OperatingMode::TRACKING)) &&
@@ -2065,7 +2065,7 @@ NetworkOPsImp::endConsensus(std::unique_ptr<std::stringstream> const& clog)
         if (registry_.timeKeeper().now() <
             (current->header().parentCloseTime + 2 * current->header().closeTimeResolution))
         {
-            setMode(OperatingMode::FULL);
+            setMode(OperatingMode::FULL, "endConsensus: check full");
         }
     }
 
@@ -2077,7 +2077,7 @@ NetworkOPsImp::consensusViewChange()
 {
     if ((mMode == OperatingMode::FULL) || (mMode == OperatingMode::TRACKING))
     {
-        setMode(OperatingMode::CONNECTED);
+        setMode(OperatingMode::CONNECTED, "consensusViewChange");
     }
 }
 
@@ -2379,7 +2379,7 @@ NetworkOPsImp::pubPeerStatus(std::function<Json::Value(void)> const& func)
 }
 
 void
-NetworkOPsImp::setMode(OperatingMode om)
+NetworkOPsImp::setMode(OperatingMode om, char const* reason)
 {
     using namespace std::chrono_literals;
     if (om == OperatingMode::CONNECTED)
@@ -2399,11 +2399,12 @@ NetworkOPsImp::setMode(OperatingMode om)
     if (mMode == om)
         return;
 
+    auto const sink = om < mMode ? m_journal.warn() : m_journal.info();
     mMode = om;
 
     accounting_.mode(om);
 
-    JLOG(m_journal.info()) << "STATE->" << strOperatingMode();
+    JLOG(sink) << "STATE->" << strOperatingMode() << " - " << reason;
     pubServer();
 }
 
@@ -2412,32 +2413,24 @@ NetworkOPsImp::recvValidation(std::shared_ptr<STValidation> const& val, std::str
 {
     JLOG(m_journal.trace()) << "recvValidation " << val->getLedgerHash() << " from " << source;
 
-    std::unique_lock lock(validationsMutex_);
-    BypassAccept bypassAccept = BypassAccept::no;
-    try
     {
-        if (pendingValidations_.contains(val->getLedgerHash()))
-            bypassAccept = BypassAccept::yes;
-        else
-            pendingValidations_.insert(val->getLedgerHash());
-        scope_unlock unlock(lock);
-        handleNewValidation(registry_.app(), val, source, bypassAccept, m_journal);
+        CanProcess const check(validationsMutex_, pendingValidations_, val->getLedgerHash());
+        try
+        {
+            BypassAccept bypassAccept = check ? BypassAccept::no : BypassAccept::yes;
+            handleNewValidation(registry_.app(), val, source, bypassAccept, m_journal);
+        }
+        catch (std::exception const& e)
+        {
+            JLOG(m_journal.warn()) << "Exception thrown for handling new validation "
+                                   << val->getLedgerHash() << ": " << e.what();
+        }
+        catch (...)
+        {
+            JLOG(m_journal.warn())
+                << "Unknown exception thrown for handling new validation " << val->getLedgerHash();
+        }
     }
-    catch (std::exception const& e)
-    {
-        JLOG(m_journal.warn()) << "Exception thrown for handling new validation "
-                               << val->getLedgerHash() << ": " << e.what();
-    }
-    catch (...)
-    {
-        JLOG(m_journal.warn()) << "Unknown exception thrown for handling new validation "
-                               << val->getLedgerHash();
-    }
-    if (bypassAccept == BypassAccept::no)
-    {
-        pendingValidations_.erase(val->getLedgerHash());
-    }
-    lock.unlock();
 
     pubValidation(val);