support forward flag for cassandra

src/backend/CassandraBackend.cpp

@@ -422,19 +422,34 @@ CassandraBackend::fetchAccountTransactions(
     do
     {
         {
-            CassandraStatement statement{selectAccountTx_};
+            CassandraStatement statement = [this, forward]() {
+                if (forward)
+                    return CassandraStatement{selectAccountTxForward_};
+                else
+                    return CassandraStatement{selectAccountTx_};
+            }();
             statement.bindBytes(account);
             if (cursor)
             {
                 statement.bindUInt(cursor->ledgerSequence >> 20 << 20);
                 statement.bindIntTuple(
                     cursor->ledgerSequence, cursor->transactionIndex);
+                BOOST_LOG_TRIVIAL(debug)
+                    << " account = " << ripple::strHex(account)
+                    << " idx = " << (cursor->ledgerSequence >> 20 << 20)
+                    << " tuple = " << cursor->ledgerSequence << " : "
+                    << cursor->transactionIndex;
             }
             else
             {
-                statement.bindUInt(rng->maxSequence >> 20 << 20);
+                int seq = forward ? rng->minSequence : rng->maxSequence;
+                statement.bindUInt(seq >> 20 << 20);
+                int placeHolder = forward ? 0 : INT32_MAX;
 
-                statement.bindIntTuple(INT32_MAX, INT32_MAX);
+                statement.bindIntTuple(placeHolder, placeHolder);
+                BOOST_LOG_TRIVIAL(debug)
+                    << " account = " << ripple::strHex(account)
+                    << " idx = " << seq << " tuple = " << placeHolder;
             }
             uint32_t adjustedLimit = limit - hashes.size();
             statement.bindUInt(adjustedLimit);
@@ -457,6 +472,8 @@ CassandraBackend::fetchAccountTransactions(
                     BOOST_LOG_TRIVIAL(debug) << __func__ << " setting cursor";
                     auto [lgrSeq, txnIdx] = result.getInt64Tuple();
                     cursor = {(uint32_t)lgrSeq, (uint32_t)txnIdx};
+                    if (forward)
+                        ++cursor->transactionIndex;
                 }
             } while (result.nextRow());
         }
@@ -464,9 +481,14 @@ CassandraBackend::fetchAccountTransactions(
         {
             BOOST_LOG_TRIVIAL(debug) << __func__ << " less than limit";
             uint32_t seq = cursor->ledgerSequence;
-            seq = ((seq >> 20) - 1) << 20;
+            seq = seq >> 20;
+            if (forward)
+                seq += 1;
+            else
+                seq -= 1;
+            seq = seq << 20;
             cursor->ledgerSequence = seq;
-            cursor->transactionIndex = INT32_MAX;
+            cursor->transactionIndex = forward ? 0 : INT32_MAX;
             BOOST_LOG_TRIVIAL(debug) << __func__ << " walking back";
             CassandraStatement statement{selectObject_};
             statement.bindBytes(keylet.key);
@@ -1245,6 +1267,13 @@ CassandraBackend::open(bool readOnly)
               << " AND seq_idx < ? LIMIT ?";
         if (!selectAccountTx_.prepareStatement(query, session_.get()))
             continue;
+        query.str("");
+        query << " SELECT hash,seq_idx FROM " << tablePrefix << "account_tx"
+              << " WHERE account = ? "
+              << " AND idx = ? "
+              << " AND seq_idx >= ? ORDER BY seq_idx ASC LIMIT ?";
+        if (!selectAccountTxForward_.prepareStatement(query, session_.get()))
+            continue;
 
         query.str("");
         query << " INSERT INTO " << tablePrefix << "ledgers "

src/backend/CassandraBackend.h

@@ -576,6 +576,7 @@ private:
     CassandraPreparedStatement selectKeys_;
     CassandraPreparedStatement insertAccountTx_;
     CassandraPreparedStatement selectAccountTx_;
+    CassandraPreparedStatement selectAccountTxForward_;
     CassandraPreparedStatement insertLedgerHeader_;
     CassandraPreparedStatement insertLedgerHash_;
     CassandraPreparedStatement updateLedgerRange_;

src/handlers/Handlers.cpp

@@ -1,3 +1,4 @@
+#include <etl/ETLSource.h>
 #include <handlers/Handlers.h>
 #include <handlers/methods/Account.h>
 #include <handlers/methods/Channel.h>
@@ -5,14 +6,11 @@
 #include <handlers/methods/Ledger.h>
 #include <handlers/methods/Subscribe.h>
 #include <handlers/methods/Transaction.h>
-#include <etl/ETLSource.h>
 
-namespace RPC
+namespace RPC {
-{
 
 static std::unordered_map<std::string, std::function<Result(Context const&)>>
-    handlerTable 
+    handlerTable{
-{
         {"account_channels", &doAccountChannels},
         {"account_currencies", &doAccountCurrencies},
         {"account_info", &doAccountInfo},
@@ -39,37 +37,26 @@ static std::unordered_set<std::string> forwardCommands {
     "fee",
     "path_find",
     "ripple_path_find",
-    "manifest"
+    "manifest"};
-};
 
 bool
 shouldForwardToRippled(Context const& ctx)
 {
     auto request = ctx.params;
 
-    if (request.contains("forward") && request.at("forward").is_bool())
-        return request.at("forward").as_bool();
-
-    BOOST_LOG_TRIVIAL(debug) << "checked forward";
-
     if (forwardCommands.find(ctx.method) != forwardCommands.end())
         return true;
 
-    BOOST_LOG_TRIVIAL(debug) << "checked command";
-
     if (request.contains("ledger_index"))
     {
         auto indexValue = request.at("ledger_index");
         if (indexValue.is_string())
         {
-            BOOST_LOG_TRIVIAL(debug) << "checking ledger as string";
             std::string index = indexValue.as_string().c_str();
             return index == "current" || index == "closed";
         }
     }
 
-    BOOST_LOG_TRIVIAL(debug) << "checked ledger";
-
     return false;
 }
 
@@ -87,4 +74,4 @@ buildResponse(Context const& ctx)
     return method(ctx);
 }
 
-}
+}  // namespace RPC

src/handlers/methods/impl/AccountTx.cpp

@@ -61,7 +61,6 @@ doAccountTx(Context const& context)
     }
 
     std::optional<Backend::AccountTransactionsCursor> cursor;
-    cursor = {context.range.maxSequence, 0};
 
     if (request.contains("marker"))
     {
@@ -119,10 +118,10 @@ doAccountTx(Context const& context)
     bool forward = false;
     if (request.contains("forward"))
     {
-        if (!request.at("limit").is_bool())
+        if (!request.at("forward").is_bool())
             return Status{Error::rpcINVALID_PARAMS, "forwardNotBool"};
 
-        forward = request.at("limit").as_bool();
+        forward = request.at("forward").as_bool();
     }
 
     boost::json::array txns;

src/webserver/WsBase.h

@@ -168,7 +168,6 @@ public:
         mgr->clearSession(this);
     }
 
-
     void
     do_read()
     {
@@ -222,25 +221,25 @@ public:
                         subscriptions_.lock(),
                         balancer_,
                         shared_from_this(),
-                        *range
+                        *range);
-                    );
 
                     if (!context)
                         return send(boost::json::serialize(
                             RPC::make_error(RPC::Error::rpcBAD_SYNTAX)));
 
-                    auto id = request.contains("id") 
+                    auto id =
-                        ? request.at("id") 
+                        request.contains("id") ? request.at("id") : nullptr;
-                        : nullptr;
 
                     auto response = getDefaultWsResponse(id);
-                    boost::json::object& result = response["result"].as_object();
+                    boost::json::object& result =
+                        response["result"].as_object();
 
                     auto v = RPC::buildResponse(*context);
 
                     if (auto status = std::get_if<RPC::Status>(&v))
                     {
-                        auto error = RPC::make_error(status->error);
+                        auto error =
+                            RPC::make_error(status->error, status->message);
 
                         if (!id.is_null())
                             error["id"] = id;
@@ -256,7 +255,6 @@ public:
 
                     if (!dosGuard_.add(ip, response_.size()))
                         result["warning"] = "Too many requests";
-
                 }
                 catch (Backend::DatabaseTimeout const& t)
                 {

test.py

@@ -208,15 +208,15 @@ def getMinAndMax(res):
     return (minSeq,maxSeq)
     
 
-async def account_tx(ip, port, account, binary, minLedger=None, maxLedger=None):
+async def account_tx(ip, port, account, binary, forward=False, minLedger=None, maxLedger=None):
 
     address = 'ws://' + str(ip) + ':' + str(port)
     try:
         async with websockets.connect(address) as ws:
             if minLedger is None or maxLedger is None:
-                await ws.send(json.dumps({"command":"account_tx","account":account, "binary":bool(binary),"limit":200}))
+                await ws.send(json.dumps({"command":"account_tx","account":account, "binary":bool(binary),"forward":bool(forward),"limit":200}))
             else:
-                await ws.send(json.dumps({"command":"account_tx","account":account, "binary":bool(binary),"limit":200,"ledger_index_min":minLedger, "ledger_index_max":maxLedger}))
+                await ws.send(json.dumps({"command":"account_tx","account":account, "binary":bool(binary),"forward":bool(forward),"limit":200,"ledger_index_min":minLedger, "ledger_index_max":maxLedger}))
 
             res = json.loads(await ws.recv())
             print(json.dumps(res,indent=4,sort_keys=True))
@@ -303,12 +303,12 @@ async def account_txs(ip, port, accounts, numCalls):
     except websockets.exceptions.connectionclosederror as e:
         print(e)
 
-async def account_tx_full(ip, port, account, binary,minLedger=None, maxLedger=None):
+async def account_tx_full(ip, port, account, binary,forward=False,minLedger=None, maxLedger=None):
     address = 'ws://' + str(ip) + ':' + str(port)
     try:
         cursor = None
         marker = None
-        req = {"command":"account_tx","account":account, "binary":bool(binary),"limit":200}
+        req = {"command":"account_tx","account":account, "binary":bool(binary),"forward":bool(forward),"limit":200}
         results = {"transactions":[]}
         numCalls = 0
         async with websockets.connect(address) as ws:
@@ -826,6 +826,7 @@ parser.add_argument('--p2pIp', default='s2.ripple.com')
 parser.add_argument('--p2pPort', default='51233')
 parser.add_argument('--verify',default=False)
 parser.add_argument('--binary',default=True)
+parser.add_argument('--forward',default=False)
 parser.add_argument('--expand',default=False)
 parser.add_argument('--transactions',default=False)
 parser.add_argument('--minLedger',default=-1)
@@ -1029,7 +1030,7 @@ def run(args):
             args.account = res["Account"]
         
         res = asyncio.get_event_loop().run_until_complete(
-                account_tx(args.ip, args.port, args.account, args.binary))
+                account_tx(args.ip, args.port, args.account, args.binary, args.forward))
         rng = getMinAndMax(res)
 
 
@@ -1048,7 +1049,7 @@ def run(args):
             args.account = res["Account"]
         print("starting")
         res = asyncio.get_event_loop().run_until_complete(
-                account_tx_full(args.ip, args.port, args.account, args.binary,None,None))
+                account_tx_full(args.ip, args.port, args.account, args.binary,args.forward,None,None))
         rng = getMinAndMax(res)
         print(len(res["transactions"]))
         print(args.account)
@@ -1060,7 +1061,7 @@ def run(args):
         if args.verify:
             print("requesting p2p node")
             res2 = asyncio.get_event_loop().run_until_complete(
-                    account_tx_full(args.p2pIp, args.p2pPort, args.account, args.binary, rng[0],rng[1],int(args.numPages)))
+                    account_tx_full(args.p2pIp, args.p2pPort, args.account, args.binary,args.forward, rng[0],rng[1],int(args.numPages)))
 
             print(compareAccountTx(res,res2))
     elif args.action == "ledger_data":