enh(mnode): transaction conflict supports two db

source/common/src/systable.c

@@ -220,7 +220,8 @@ static const SSysDbTableSchema transSchema[] = {
     {.name = "id", .bytes = 4, .type = TSDB_DATA_TYPE_INT},
     {.name = "create_time", .bytes = 8, .type = TSDB_DATA_TYPE_TIMESTAMP},
     {.name = "stage", .bytes = TSDB_TRANS_STAGE_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_VARCHAR},
-    {.name = "db", .bytes = SYSTABLE_SCH_DB_NAME_LEN, .type = TSDB_DATA_TYPE_VARCHAR},
+    {.name = "db1", .bytes = SYSTABLE_SCH_DB_NAME_LEN, .type = TSDB_DATA_TYPE_VARCHAR},
+    {.name = "db2", .bytes = SYSTABLE_SCH_DB_NAME_LEN, .type = TSDB_DATA_TYPE_VARCHAR},
     {.name = "failed_times", .bytes = 4, .type = TSDB_DATA_TYPE_INT},
     {.name = "last_exec_time", .bytes = 8, .type = TSDB_DATA_TYPE_TIMESTAMP},
     {.name = "last_action_info",

source/dnode/mnode/impl/inc/mndDef.h

@@ -124,7 +124,8 @@ typedef struct {
   int32_t        lastErrorNo;
   tmsg_t         lastMsgType;
   SEpSet         lastEpset;
-  char           dbname[TSDB_DB_FNAME_LEN];
+  char           dbname1[TSDB_DB_FNAME_LEN];
+  char           dbname2[TSDB_DB_FNAME_LEN];
   int32_t        startFunc;
   int32_t        stopFunc;
   int32_t        paramLen;

source/dnode/mnode/impl/inc/mndTrans.h

@@ -68,7 +68,7 @@ int32_t mndTransAppendRedoAction(STrans *pTrans, STransAction *pAction);
 int32_t mndTransAppendUndoAction(STrans *pTrans, STransAction *pAction);
 void    mndTransSetRpcRsp(STrans *pTrans, void *pCont, int32_t contLen);
 void    mndTransSetCb(STrans *pTrans, ETrnFunc startFunc, ETrnFunc stopFunc, void *param, int32_t paramLen);
-void    mndTransSetDbName(STrans *pTrans, const char *dbname);
+void    mndTransSetDbName(STrans *pTrans, const char *dbname1, const char *dbname2);
 void    mndTransSetSerial(STrans *pTrans);
 
 int32_t mndTransPrepare(SMnode *pMnode, STrans *pTrans);

source/dnode/mnode/impl/src/mndDb.c

@@ -477,7 +477,7 @@ static int32_t mndCreateDb(SMnode *pMnode, SRpcMsg *pReq, SCreateDbReq *pCreate,
 
   mDebug("trans:%d, used to create db:%s", pTrans->id, pCreate->db);
 
-  mndTransSetDbName(pTrans, dbObj.name);
+  mndTransSetDbName(pTrans, dbObj.name, NULL);
   if (mndSetCreateDbRedoLogs(pMnode, pTrans, &dbObj, pVgroups) != 0) goto _OVER;
   if (mndSetCreateDbUndoLogs(pMnode, pTrans, &dbObj, pVgroups) != 0) goto _OVER;
   if (mndSetCreateDbCommitLogs(pMnode, pTrans, &dbObj, pVgroups) != 0) goto _OVER;
@@ -668,7 +668,7 @@ static int32_t mndAlterDb(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pOld, SDbObj *p
   mDebug("trans:%d, used to alter db:%s", pTrans->id, pOld->name);
 
   int32_t code = -1;
-  mndTransSetDbName(pTrans, pOld->name);
+  mndTransSetDbName(pTrans, pOld->name, NULL);
   if (mndSetAlterDbRedoLogs(pMnode, pTrans, pOld, pNew) != 0) goto _OVER;
   if (mndSetAlterDbCommitLogs(pMnode, pTrans, pOld, pNew) != 0) goto _OVER;
   if (mndSetAlterDbRedoActions(pMnode, pTrans, pOld, pNew) != 0) goto _OVER;
@@ -921,7 +921,7 @@ static int32_t mndDropDb(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pDb) {
   if (pTrans == NULL) goto _OVER;
 
   mDebug("trans:%d, used to drop db:%s", pTrans->id, pDb->name);
-  mndTransSetDbName(pTrans, pDb->name);
+  mndTransSetDbName(pTrans, pDb->name, NULL);
 
   if (mndSetDropDbRedoLogs(pMnode, pTrans, pDb) != 0) goto _OVER;
   if (mndSetDropDbCommitLogs(pMnode, pTrans, pDb) != 0) goto _OVER;

source/dnode/mnode/impl/src/mndSma.c

@@ -609,7 +609,7 @@ static int32_t mndCreateSma(SMnode *pMnode, SRpcMsg *pReq, SMCreateSmaReq *pCrea
   int32_t code = -1;
   STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_CONFLICT_DB, pReq);
   if (pTrans == NULL) goto _OVER;
-  mndTransSetDbName(pTrans, pDb->name);
+  mndTransSetDbName(pTrans, pDb->name, NULL);
   mndTransSetSerial(pTrans);
   mDebug("trans:%d, used to create sma:%s", pTrans->id, pCreate->name);
 
@@ -852,7 +852,7 @@ static int32_t mndDropSma(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pDb, SSmaObj *p
   if (pTrans == NULL) goto _OVER;
 
   mDebug("trans:%d, used to drop sma:%s", pTrans->id, pSma->name);
-  mndTransSetDbName(pTrans, pDb->name);
+  mndTransSetDbName(pTrans, pDb->name, NULL);
 
   if (mndSetDropSmaRedoLogs(pMnode, pTrans, pSma) != 0) goto _OVER;
   if (mndSetDropSmaVgroupRedoLogs(pMnode, pTrans, pVgroup) != 0) goto _OVER;

source/dnode/mnode/impl/src/mndStb.c

@@ -758,7 +758,7 @@ _OVER:
 }
 
 int32_t mndAddStbToTrans(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SStbObj *pStb) {
-  mndTransSetDbName(pTrans, pDb->name);
+  mndTransSetDbName(pTrans, pDb->name, NULL);
   if (mndSetCreateStbRedoLogs(pMnode, pTrans, pDb, pStb) != 0) return -1;
   if (mndSetCreateStbUndoLogs(pMnode, pTrans, pDb, pStb) != 0) return -1;
   if (mndSetCreateStbCommitLogs(pMnode, pTrans, pDb, pStb) != 0) return -1;
@@ -1396,7 +1396,7 @@ static int32_t mndAlterStb(SMnode *pMnode, SRpcMsg *pReq, const SMAlterStbReq *p
   if (pTrans == NULL) goto _OVER;
 
   mDebug("trans:%d, used to alter stb:%s", pTrans->id, pAlter->name);
-  mndTransSetDbName(pTrans, pDb->name);
+  mndTransSetDbName(pTrans, pDb->name, NULL);
 
   if (needRsp) {
     void   *pCont = NULL;
@@ -1537,7 +1537,7 @@ static int32_t mndDropStb(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pDb, SStbObj *p
   if (pTrans == NULL) goto _OVER;
 
   mDebug("trans:%d, used to drop stb:%s", pTrans->id, pStb->name);
-  mndTransSetDbName(pTrans, pDb->name);
+  mndTransSetDbName(pTrans, pDb->name, NULL);
 
   if (mndSetDropStbRedoLogs(pMnode, pTrans, pStb) != 0) goto _OVER;
   if (mndSetDropStbCommitLogs(pMnode, pTrans, pStb) != 0) goto _OVER;

source/dnode/mnode/impl/src/mndStream.c

@@ -613,9 +613,9 @@ static int32_t mndProcessCreateStreamReq(SRpcMsg *pReq) {
     goto _OVER;
   }
 
-  mndTransSetDbName(pTrans, createStreamReq.sourceDB);
+  mndTransSetDbName(pTrans, createStreamReq.sourceDB, NULL);
   // TODO
-  /*mndTransSetDbName(pTrans, streamObj.targetDb);*/
+  /*mndTransSetDbName(pTrans, streamObj.targetDb, NULL);*/
   mDebug("trans:%d, used to create stream:%s", pTrans->id, createStreamReq.name);
 
   // build stream obj from request

source/dnode/mnode/impl/src/mndSubscribe.c

@@ -403,7 +403,7 @@ static int32_t mndDoRebalance(SMnode *pMnode, const SMqRebInputObj *pInput, SMqR
 
 static int32_t mndPersistRebResult(SMnode *pMnode, SRpcMsg *pMsg, const SMqRebOutputObj *pOutput) {
   STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_CONFLICT_DB_INSIDE, pMsg);
-  mndTransSetDbName(pTrans, pOutput->pSub->dbName);
+  mndTransSetDbName(pTrans, pOutput->pSub->dbName, NULL);
   if (pTrans == NULL) return -1;
 
   // make txn:

source/dnode/mnode/impl/src/mndTopic.c

@@ -566,7 +566,7 @@ static int32_t mndProcessDropTopicReq(SRpcMsg *pReq) {
 #endif
 
   STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_CONFLICT_DB_INSIDE, pReq);
-  mndTransSetDbName(pTrans, pTopic->db);
+  mndTransSetDbName(pTrans, pTopic->db, NULL);
   if (pTrans == NULL) {
     mError("topic:%s, failed to drop since %s", pTopic->name, terrstr());
     return -1;

source/dnode/mnode/impl/src/mndTrans.c

@@ -122,7 +122,8 @@ static SSdbRaw *mndTransActionEncode(STrans *pTrans) {
   SDB_SET_INT8(pRaw, dataPos, pTrans->conflict, _OVER)
   SDB_SET_INT8(pRaw, dataPos, pTrans->exec, _OVER)
   SDB_SET_INT64(pRaw, dataPos, pTrans->createdTime, _OVER)
-  SDB_SET_BINARY(pRaw, dataPos, pTrans->dbname, TSDB_DB_FNAME_LEN, _OVER)
+  SDB_SET_BINARY(pRaw, dataPos, pTrans->dbname1, TSDB_DB_FNAME_LEN, _OVER)
+  SDB_SET_BINARY(pRaw, dataPos, pTrans->dbname2, TSDB_DB_FNAME_LEN, _OVER)
   SDB_SET_INT32(pRaw, dataPos, pTrans->redoActionPos, _OVER)
 
   int32_t redoActionNum = taosArrayGetSize(pTrans->redoActions);
@@ -270,7 +271,8 @@ static SSdbRow *mndTransActionDecode(SSdbRaw *pRaw) {
   pTrans->conflict = conflict;
   pTrans->exec = exec;
   SDB_GET_INT64(pRaw, dataPos, &pTrans->createdTime, _OVER)
-  SDB_GET_BINARY(pRaw, dataPos, pTrans->dbname, TSDB_DB_FNAME_LEN, _OVER)
+  SDB_GET_BINARY(pRaw, dataPos, pTrans->dbname1, TSDB_DB_FNAME_LEN, _OVER)
+  SDB_GET_BINARY(pRaw, dataPos, pTrans->dbname2, TSDB_DB_FNAME_LEN, _OVER)
   SDB_GET_INT32(pRaw, dataPos, &pTrans->redoActionPos, _OVER)
   SDB_GET_INT32(pRaw, dataPos, &redoActionNum, _OVER)
   SDB_GET_INT32(pRaw, dataPos, &undoActionNum, _OVER)
@@ -649,7 +651,14 @@ void mndTransSetCb(STrans *pTrans, ETrnFunc startFunc, ETrnFunc stopFunc, void *
   pTrans->paramLen = paramLen;
 }
 
-void mndTransSetDbName(STrans *pTrans, const char *dbname) { memcpy(pTrans->dbname, dbname, TSDB_DB_FNAME_LEN); }
+void mndTransSetDbName(STrans *pTrans, const char *dbname1, const char *dbname2) {
+  if (dbname1 != NULL) {
+    memcpy(pTrans->dbname1, dbname1, TSDB_DB_FNAME_LEN);
+  }
+  if (dbname2 != NULL) {
+    memcpy(pTrans->dbname2, dbname2, TSDB_DB_FNAME_LEN);
+  }
+}
 
 void mndTransSetSerial(STrans *pTrans) { pTrans->exec = TRN_EXEC_SERIAL; }
 
@@ -688,14 +697,24 @@ static bool mndCheckTransConflict(SMnode *pMnode, STrans *pNew) {
     if (pNew->conflict == TRN_CONFLICT_GLOBAL) conflict = true;
     if (pNew->conflict == TRN_CONFLICT_DB) {
       if (pTrans->conflict == TRN_CONFLICT_GLOBAL) conflict = true;
-      if (pTrans->conflict == TRN_CONFLICT_DB && strcmp(pNew->dbname, pTrans->dbname) == 0) conflict = true;
-      if (pTrans->conflict == TRN_CONFLICT_DB_INSIDE && strcmp(pNew->dbname, pTrans->dbname) == 0) conflict = true;
+      if (pTrans->conflict == TRN_CONFLICT_DB || pTrans->conflict == TRN_CONFLICT_DB_INSIDE) {
+        if (strcmp(pNew->dbname1, pTrans->dbname1) == 0 || strcmp(pNew->dbname1, pTrans->dbname2) == 0 ||
+            strcmp(pNew->dbname2, pTrans->dbname1) == 0 || strcmp(pNew->dbname2, pTrans->dbname2) == 0) {
+          conflict = true;
+        }
+      }
     }
     if (pNew->conflict == TRN_CONFLICT_DB_INSIDE) {
       if (pTrans->conflict == TRN_CONFLICT_GLOBAL) conflict = true;
-      if (pTrans->conflict == TRN_CONFLICT_DB && strcmp(pNew->dbname, pTrans->dbname) == 0) conflict = true;
+      if (pTrans->conflict == TRN_CONFLICT_DB) {
+        if (strcmp(pNew->dbname1, pTrans->dbname1) == 0 || strcmp(pNew->dbname1, pTrans->dbname2) == 0 ||
+            strcmp(pNew->dbname2, pTrans->dbname1) == 0 || strcmp(pNew->dbname2, pTrans->dbname2) == 0) {
+          conflict = true;
+        }
+      }
     }
-    mError("trans:%d, can't execute since conflict with trans:%d, db:%s", pNew->id, pTrans->id, pTrans->dbname);
+    mError("trans:%d, can't execute since conflict with trans:%d, db1:%s db2:%s", pNew->id, pTrans->id, pTrans->dbname1,
+           pTrans->dbname2);
     sdbRelease(pMnode->pSdb, pTrans);
   }
 
@@ -704,7 +723,7 @@ static bool mndCheckTransConflict(SMnode *pMnode, STrans *pNew) {
 
 int32_t mndTransPrepare(SMnode *pMnode, STrans *pTrans) {
   if (pTrans->conflict == TRN_CONFLICT_DB || pTrans->conflict == TRN_CONFLICT_DB_INSIDE) {
-    if (strlen(pTrans->dbname) == 0) {
+    if (strlen(pTrans->dbname1) == 0 && strlen(pTrans->dbname2) == 0) {
       terrno = TSDB_CODE_MND_TRANS_CONFLICT;
       mError("trans:%d, failed to prepare conflict db not set", pTrans->id);
       return -1;
@@ -1449,10 +1468,15 @@ static int32_t mndRetrieveTrans(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBl
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
     colDataAppend(pColInfo, numOfRows, (const char *)stage, false);
 
-    char dbname[TSDB_DB_NAME_LEN + VARSTR_HEADER_SIZE] = {0};
-    STR_WITH_MAXSIZE_TO_VARSTR(dbname, mndGetDbStr(pTrans->dbname), pShow->pMeta->pSchemas[cols].bytes);
+    char dbname1[TSDB_DB_NAME_LEN + VARSTR_HEADER_SIZE] = {0};
+    STR_WITH_MAXSIZE_TO_VARSTR(dbname1, mndGetDbStr(pTrans->dbname1), pShow->pMeta->pSchemas[cols].bytes);
+    pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+    colDataAppend(pColInfo, numOfRows, (const char *)dbname1, false);
+
+    char dbname2[TSDB_DB_NAME_LEN + VARSTR_HEADER_SIZE] = {0};
+    STR_WITH_MAXSIZE_TO_VARSTR(dbname2, mndGetDbStr(pTrans->dbname2), pShow->pMeta->pSchemas[cols].bytes);
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
-    colDataAppend(pColInfo, numOfRows, (const char *)dbname, false);
+    colDataAppend(pColInfo, numOfRows, (const char *)dbname2, false);
 
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
     colDataAppend(pColInfo, numOfRows, (const char *)&pTrans->failedTimes, false);

source/dnode/mnode/impl/test/trans/trans2.cpp

@@ -128,7 +128,7 @@ class MndTestTrans2 : public ::testing::Test {
     mndTransSetCb(pTrans, TRANS_START_FUNC_TEST, TRANS_STOP_FUNC_TEST, param, strlen(param) + 1);
 
     if (pDb != NULL) {
-      mndTransSetDbName(pTrans, pDb->name);
+      mndTransSetDbName(pTrans, pDb->name, NULL);
     }
 
     int32_t code = mndTransPrepare(pMnode, pTrans);
@@ -201,7 +201,7 @@ class MndTestTrans2 : public ::testing::Test {
     }
 
     if (pDb != NULL) {
-      mndTransSetDbName(pTrans, pDb->name);
+      mndTransSetDbName(pTrans, pDb->name, NULL);
     }
 
     int32_t code = mndTransPrepare(pMnode, pTrans);

tests/test/c/sdbDump.c

@@ -283,7 +283,8 @@ void dumpTrans(SSdb *pSdb, SJson *json) {
     tjsonAddIntegerToObject(item, "conflict", pObj->conflict);
     tjsonAddIntegerToObject(item, "exec", pObj->exec);
     tjsonAddStringToObject(item, "createdTime", i642str(pObj->createdTime));
-    tjsonAddStringToObject(item, "dbname", pObj->dbname);
+    tjsonAddStringToObject(item, "dbname1", pObj->dbname1);
+    tjsonAddStringToObject(item, "dbname2", pObj->dbname2);
     tjsonAddIntegerToObject(item, "commitLogNum", taosArrayGetSize(pObj->commitActions));
     tjsonAddIntegerToObject(item, "redoActionNum", taosArrayGetSize(pObj->redoActions));
     tjsonAddIntegerToObject(item, "undoActionNum", taosArrayGetSize(pObj->undoActions));