test(stream): add unit test cases.

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

@@ -119,6 +119,7 @@ int32_t     mndStreamSetPauseAction(SMnode *pMnode, STrans *pTrans, SStreamObj *
 int32_t     mndStreamSetDropAction(SMnode *pMnode, STrans *pTrans, SStreamObj *pStream);
 int32_t     mndStreamSetDropActionFromList(SMnode *pMnode, STrans *pTrans, SArray *pList);
 int32_t     mndStreamSetResetTaskAction(SMnode *pMnode, STrans *pTrans, SStreamObj *pStream);
+int32_t     mndCreateStreamResetStatusTrans(SMnode *pMnode, SStreamObj *pStream);
 
 SStreamTaskIter *createStreamTaskIter(SStreamObj *pStream);
 void             destroyStreamTaskIter(SStreamTaskIter *pIter);

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

@@ -65,7 +65,7 @@ static void addIntoCheckpointList(SArray* pList, const SFailedCheckpointInfo* pI
   taosArrayPush(pList, pInfo);
 }
 
-int32_t createStreamResetStatusTrans(SMnode *pMnode, SStreamObj *pStream) {
+int32_t mndCreateStreamResetStatusTrans(SMnode *pMnode, SStreamObj *pStream) {
   STrans *pTrans = doCreateTrans(pMnode, pStream, NULL, MND_STREAM_TASK_RESET_NAME, " reset from failed checkpoint");
   if (pTrans == NULL) {
     return terrno;
@@ -115,7 +115,7 @@ static int32_t mndResetStatusFromCheckpoint(SMnode *pMnode, int64_t streamId, in
     } else {
       mDebug("stream:%s (0x%" PRIx64 ") reset checkpoint procedure, transId:%d, create reset trans", pStream->name,
              pStream->uid, transId);
-      code = createStreamResetStatusTrans(pMnode, pStream);
+      code = mndCreateStreamResetStatusTrans(pMnode, pStream);
     }
   }
 

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

@@ -261,22 +261,30 @@ int32_t setTransAction(STrans *pTrans, void *pCont, int32_t contLen, int32_t msg
   return mndTransAppendRedoAction(pTrans, &action);
 }
 
+static bool identicalName(const char* pDb, const char* pParam, int32_t len) {
+  return (strlen(pDb) == len) && (strncmp(pDb, pParam, len) == 0);
+}
+
 int32_t doKillCheckpointTrans(SMnode *pMnode, const char *pDBName, size_t len) {
-  // data in the hash table will be removed automatically, no need to remove it here.
-  SStreamTransInfo *pTransInfo = taosHashGet(execInfo.transMgmt.pDBTrans, pDBName, len);
-  if (pTransInfo == NULL) {
-    return TSDB_CODE_SUCCESS;
-  }
+  void *pIter = NULL;
 
-  // not checkpoint trans, ignore
+  while ((pIter = taosHashIterate(execInfo.transMgmt.pDBTrans, pIter)) != NULL) {
+    SStreamTransInfo *pTransInfo = (SStreamTransInfo *)pIter;
     if (strcmp(pTransInfo->name, MND_STREAM_CHECKPOINT_NAME) != 0) {
-    mDebug("not checkpoint trans, not kill it, name:%s, transId:%d", pTransInfo->name, pTransInfo->transId);
-    return TSDB_CODE_SUCCESS;
+      continue;
     }
 
-  char *pDupDBName = strndup(pDBName, len);
-  mndKillTransImpl(pMnode, pTransInfo->transId, pDupDBName);
-  taosMemoryFree(pDupDBName);
+    SStreamObj *pStream = mndGetStreamObj(pMnode, pTransInfo->streamId);
+    if (pStream != NULL) {
+      if (identicalName(pStream->sourceDb, pDBName, len)) {
+        mndKillTransImpl(pMnode, pTransInfo->transId, pStream->sourceDb);
+      } else if (identicalName(pStream->targetDb, pDBName, len)) {
+        mndKillTransImpl(pMnode, pTransInfo->transId, pStream->targetDb);
+      }
+
+      mndReleaseStream(pMnode, pStream);
+    }
+  }
 
   return TSDB_CODE_SUCCESS;
 }

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

@@ -231,6 +231,8 @@ static int32_t doSetResumeAction(STrans *pTrans, SMnode *pMnode, SStreamTask *pT
     taosMemoryFree(pReq);
     return -1;
   }
+
+  mDebug("set the resume action for trans:%d", pTrans->id);
   return 0;
 }