Oops

src/ripple/app/consensus/RCLConsensus.cpp

@@ -134,8 +134,12 @@ RCLConsensus::Adaptor::acquireLedger(LedgerHash const& hash)
             acquiringLedger_ = hash;
 
             app_.getJobQueue().addJob(
-                jtADVANCE, "getConsensusLedger", [id = hash, &app = app_]() {
-                    app.getInboundLedgers().acquire(
+                jtADVANCE,
+                "getConsensusLedger1",
+                [id = hash, &app = app_, this]() {
+                    JLOG(j_.debug())
+                        << "JOB advanceLedger getConsensusLedger1 started";
+                    app.getInboundLedgers().acquireAsync(
                         id, 0, InboundLedger::Reason::CONSENSUS);
                 });
         }

src/ripple/app/consensus/RCLValidations.cpp

@@ -135,8 +135,10 @@ RCLValidationsAdaptor::acquire(LedgerHash const& hash)
         Application* pApp = &app_;
 
         app_.getJobQueue().addJob(
-            jtADVANCE, "getConsensusLedger", [pApp, hash]() {
-                pApp->getInboundLedgers().acquire(
+            jtADVANCE, "getConsensusLedger2", [pApp, hash, this]() {
+                JLOG(j_.debug())
+                    << "JOB advanceLedger getConsensusLedger2 started";
+                pApp->getInboundLedgers().acquireAsync(
                     hash, 0, InboundLedger::Reason::CONSENSUS);
             });
         return std::nullopt;
@@ -152,7 +154,9 @@ void
 handleNewValidation(
     Application& app,
     std::shared_ptr<STValidation> const& val,
-    std::string const& source)
+    std::string const& source,
+    BypassAccept const bypassAccept,
+    std::optional<beast::Journal> j)
 {
     auto const& signingKey = val->getSignerPublic();
     auto const& hash = val->getLedgerHash();
@@ -177,7 +181,23 @@ handleNewValidation(
     if (outcome == ValStatus::current)
     {
         if (val->isTrusted())
-            app.getLedgerMaster().checkAccept(hash, seq);
+        {
+            // Was: app.getLedgerMaster().checkAccept(hash, seq);
+            // https://github.com/XRPLF/rippled/commit/fbbea9e6e25795a8a6bd1bf64b780771933a9579
+            if (bypassAccept == BypassAccept::yes)
+            {
+                assert(j.has_value());
+                if (j.has_value())
+                {
+                    JLOG(j->trace()) << "Bypassing checkAccept for validation "
+                                     << val->getLedgerHash();
+                }
+            }
+            else
+            {
+                app.getLedgerMaster().checkAccept(hash, seq);
+            }
+        }
         return;
     }
 

src/ripple/app/consensus/RCLValidations.h

@@ -25,12 +25,16 @@
 #include <ripple/protocol/Protocol.h>
 #include <ripple/protocol/RippleLedgerHash.h>
 #include <ripple/protocol/STValidation.h>
+#include <optional>
+#include <set>
 #include <vector>
 
 namespace ripple {
 
 class Application;
 
+enum class BypassAccept : bool { no = false, yes };
+
 /** Wrapper over STValidation for generic Validation code
 
     Wraps an STValidation for compatibility with the generic validation code.
@@ -248,7 +252,9 @@ void
 handleNewValidation(
     Application& app,
     std::shared_ptr<STValidation> const& val,
-    std::string const& source);
+    std::string const& source,
+    BypassAccept const bypassAccept = BypassAccept::no,
+    std::optional<beast::Journal> j = std::nullopt);
 
 }  // namespace ripple
 

src/ripple/app/ledger/InboundLedgers.h

@@ -38,10 +38,21 @@ public:
     virtual ~InboundLedgers() = default;
 
     // VFALCO TODO Should this be called findOrAdd ?
+    // Callers should use this if they possibly need an authoritative
+    // response immediately.
     //
     virtual std::shared_ptr<Ledger const>
     acquire(uint256 const& hash, std::uint32_t seq, InboundLedger::Reason) = 0;
 
+    // Callers should use this if they are known to be executing on the Job
+    // 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;
+
     virtual std::shared_ptr<InboundLedger>
     find(LedgerHash const& hash) = 0;
 

src/ripple/app/ledger/impl/InboundLedger.cpp

@@ -560,7 +560,7 @@ InboundLedger::trigger(std::shared_ptr<Peer> const& peer, TriggerReason reason)
         return;
     }
 
-    if (auto stream = journal_.trace())
+    if (auto stream = journal_.debug())
     {
         if (peer)
             stream << "Trigger acquiring ledger " << hash_ << " from " << peer;

src/ripple/app/ledger/impl/InboundLedgers.cpp

@@ -28,6 +28,7 @@
 #include <ripple/core/JobQueue.h>
 #include <ripple/nodestore/DatabaseShard.h>
 #include <ripple/protocol/jss.h>
+#include <exception>
 #include <memory>
 #include <mutex>
 #include <vector>
@@ -141,6 +142,37 @@ public:
         return inbound->getLedger();
     }
 
+    void
+    acquireAsync(
+        uint256 const& hash,
+        std::uint32_t seq,
+        InboundLedger::Reason reason) override
+    {
+        std::unique_lock lock(acquiresMutex_);
+        try
+        {
+            if (pendingAcquires_.contains(hash))
+                return;
+            pendingAcquires_.insert(hash);
+            lock.unlock();
+            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;
+        }
+        lock.lock();
+        pendingAcquires_.erase(hash);
+    }
+
     std::shared_ptr<InboundLedger>
     find(uint256 const& hash) override
     {
@@ -426,6 +458,9 @@ private:
     beast::insight::Counter mCounter;
 
     std::unique_ptr<PeerSetBuilder> mPeerSetBuilder;
+
+    std::set<uint256> pendingAcquires_;
+    std::mutex acquiresMutex_;
 };
 
 //------------------------------------------------------------------------------

src/ripple/app/misc/NetworkOPs.cpp

@@ -70,7 +70,9 @@
 #include <boost/asio/ip/host_name.hpp>
 #include <boost/asio/steady_timer.hpp>
 
+#include <exception>
 #include <mutex>
+#include <set>
 #include <string>
 #include <tuple>
 #include <unordered_map>
@@ -776,6 +778,9 @@ private:
 
     StateAccounting accounting_{};
 
+    std::set<uint256> pendingValidations_;
+    std::mutex validationsMutex_;
+
 private:
     struct Stats
     {
@@ -1791,7 +1796,8 @@ NetworkOPsImp::checkLastClosedLedger(
     }
 
     JLOG(m_journal.warn()) << "We are not running on the consensus ledger";
-    JLOG(m_journal.info()) << "Our LCL: " << getJson({*ourClosed, {}});
+    JLOG(m_journal.info()) << "Our LCL: " << ourClosed->info().hash
+                           << getJson({*ourClosed, {}});
     JLOG(m_journal.info()) << "Net LCL " << closedLedger;
 
     if ((mMode == OperatingMode::TRACKING) || (mMode == OperatingMode::FULL))
@@ -2345,7 +2351,37 @@ NetworkOPsImp::recvValidation(
     JLOG(m_journal.trace())
         << "recvValidation " << val->getLedgerHash() << " from " << source;
 
-    handleNewValidation(app_, val, source);
+    // handleNewValidation(app_, val, source);
+    // https://github.com/XRPLF/rippled/commit/fbbea9e6e25795a8a6bd1bf64b780771933a9579
+    std::unique_lock lock(validationsMutex_);
+    BypassAccept bypassAccept = BypassAccept::no;
+    try
+    {
+        if (pendingValidations_.contains(val->getLedgerHash()))
+            bypassAccept = BypassAccept::yes;
+        else
+            pendingValidations_.insert(val->getLedgerHash());
+        lock.unlock();
+        handleNewValidation(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();
+    }
+    if (bypassAccept == BypassAccept::no)
+    {
+        lock.lock();
+        pendingValidations_.erase(val->getLedgerHash());
+        lock.unlock();
+    }
 
     pubValidation(val);
 

src/test/app/LedgerReplay_test.cpp

@@ -106,6 +106,14 @@ public:
         return {};
     }
 
+    virtual void
+    acquireAsync(
+        uint256 const& hash,
+        std::uint32_t seq,
+        InboundLedger::Reason reason) override
+    {
+    }
+
     virtual std::shared_ptr<InboundLedger>
     find(LedgerHash const& hash) override
     {