refactor: rebalance input

include/common/tmsg.h

@@ -1442,32 +1442,32 @@ typedef struct {
   SArray* lostConsumers;     // SArray<int64_t>
   SArray* removedConsumers;  // SArray<int64_t>
   SArray* newConsumers;      // SArray<int64_t>
-} SMqRebSubscribe;
+} SMqRebInfo;
 
-static FORCE_INLINE SMqRebSubscribe* tNewSMqRebSubscribe(const char* key) {
-  SMqRebSubscribe* pRebSub = (SMqRebSubscribe*)taosMemoryCalloc(1, sizeof(SMqRebSubscribe));
-  if (pRebSub == NULL) {
+static FORCE_INLINE SMqRebInfo* tNewSMqRebSubscribe(const char* key) {
+  SMqRebInfo* pRebInfo = (SMqRebInfo*)taosMemoryCalloc(1, sizeof(SMqRebInfo));
+  if (pRebInfo == NULL) {
     goto _err;
   }
-  strcpy(pRebSub->key, key);
-  pRebSub->lostConsumers = taosArrayInit(0, sizeof(int64_t));
-  if (pRebSub->lostConsumers == NULL) {
+  strcpy(pRebInfo->key, key);
+  pRebInfo->lostConsumers = taosArrayInit(0, sizeof(int64_t));
+  if (pRebInfo->lostConsumers == NULL) {
     goto _err;
   }
-  pRebSub->removedConsumers = taosArrayInit(0, sizeof(int64_t));
-  if (pRebSub->removedConsumers == NULL) {
+  pRebInfo->removedConsumers = taosArrayInit(0, sizeof(int64_t));
+  if (pRebInfo->removedConsumers == NULL) {
     goto _err;
   }
-  pRebSub->newConsumers = taosArrayInit(0, sizeof(int64_t));
-  if (pRebSub->newConsumers == NULL) {
+  pRebInfo->newConsumers = taosArrayInit(0, sizeof(int64_t));
+  if (pRebInfo->newConsumers == NULL) {
     goto _err;
   }
-  return pRebSub;
+  return pRebInfo;
 _err:
-  taosArrayDestroy(pRebSub->lostConsumers);
-  taosArrayDestroy(pRebSub->removedConsumers);
-  taosArrayDestroy(pRebSub->newConsumers);
-  taosMemoryFreeClear(pRebSub);
+  taosArrayDestroy(pRebInfo->lostConsumers);
+  taosArrayDestroy(pRebInfo->removedConsumers);
+  taosArrayDestroy(pRebInfo->newConsumers);
+  taosMemoryFreeClear(pRebInfo);
   return NULL;
 }
 

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

@@ -554,9 +554,8 @@ int32_t             tEncodeSMqSubActionLogObj(void** buf, const SMqSubActionLogO
 void*               tDecodeSMqSubActionLogObj(const void* buf, SMqSubActionLogObj* pLog);
 
 typedef struct {
-  const SMqSubscribeObj* pOldSub;
-  const SMqTopicObj*     pTopic;
-  const SMqRebSubscribe* pRebInfo;
+  int32_t           oldConsumerNum;
+  const SMqRebInfo* pRebInfo;
 } SMqRebInputObj;
 
 typedef struct {

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

@@ -134,15 +134,15 @@ FAIL:
   return -1;
 }
 
-static SMqRebSubscribe *mndGetOrCreateRebSub(SHashObj *pHash, const char *key) {
-  SMqRebSubscribe *pRebSub = taosHashGet(pHash, key, strlen(key) + 1);
+static SMqRebInfo *mndGetOrCreateRebSub(SHashObj *pHash, const char *key) {
+  SMqRebInfo *pRebSub = taosHashGet(pHash, key, strlen(key) + 1);
   if (pRebSub == NULL) {
     pRebSub = tNewSMqRebSubscribe(key);
     if (pRebSub == NULL) {
       terrno = TSDB_CODE_OUT_OF_MEMORY;
       return NULL;
     }
-    taosHashPut(pHash, key, strlen(key) + 1, pRebSub, sizeof(SMqRebSubscribe));
+    taosHashPut(pHash, key, strlen(key) + 1, pRebSub, sizeof(SMqRebInfo));
   }
   return pRebSub;
 }
@@ -189,7 +189,7 @@ static int32_t mndProcessMqTimerMsg(SNodeMsg *pMsg) {
         char  key[TSDB_SUBSCRIBE_KEY_LEN];
         char *removedTopic = taosArrayGetP(pConsumer->currentTopics, i);
         mndMakeSubscribeKey(key, pConsumer->cgroup, removedTopic);
-        SMqRebSubscribe *pRebSub = mndGetOrCreateRebSub(pRebMsg->rebSubHash, key);
+        SMqRebInfo *pRebSub = mndGetOrCreateRebSub(pRebMsg->rebSubHash, key);
         taosArrayPush(pRebSub->removedConsumers, &pConsumer->consumerId);
       }
       taosRUnLockLatch(&pConsumer->lock);
@@ -200,7 +200,7 @@ static int32_t mndProcessMqTimerMsg(SNodeMsg *pMsg) {
         char  key[TSDB_SUBSCRIBE_KEY_LEN];
         char *newTopic = taosArrayGetP(pConsumer->rebNewTopics, i);
         mndMakeSubscribeKey(key, pConsumer->cgroup, newTopic);
-        SMqRebSubscribe *pRebSub = mndGetOrCreateRebSub(pRebMsg->rebSubHash, key);
+        SMqRebInfo *pRebSub = mndGetOrCreateRebSub(pRebMsg->rebSubHash, key);
         taosArrayPush(pRebSub->newConsumers, &pConsumer->consumerId);
       }
 
@@ -209,7 +209,7 @@ static int32_t mndProcessMqTimerMsg(SNodeMsg *pMsg) {
         char  key[TSDB_SUBSCRIBE_KEY_LEN];
         char *removedTopic = taosArrayGetP(pConsumer->rebRemovedTopics, i);
         mndMakeSubscribeKey(key, pConsumer->cgroup, removedTopic);
-        SMqRebSubscribe *pRebSub = mndGetOrCreateRebSub(pRebMsg->rebSubHash, key);
+        SMqRebInfo *pRebSub = mndGetOrCreateRebSub(pRebMsg->rebSubHash, key);
         taosArrayPush(pRebSub->removedConsumers, &pConsumer->consumerId);
       }
       taosRUnLockLatch(&pConsumer->lock);

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

@@ -277,6 +277,7 @@ SMqSubscribeObj *tCloneSubscribeObj(const SMqSubscribeObj *pSub) {
   memcpy(pSubNew->key, pSub->key, TSDB_SUBSCRIBE_KEY_LEN);
   taosInitRWLatch(&pSubNew->lock);
 
+  pSubNew->dbUid = pSub->dbUid;
   pSubNew->subType = pSub->subType;
   pSubNew->withTbName = pSub->withTbName;
   pSubNew->withSchema = pSub->withSchema;
@@ -310,6 +311,7 @@ void tDeleteSubscribeObj(SMqSubscribeObj *pSub) {
 int32_t tEncodeSubscribeObj(void **buf, const SMqSubscribeObj *pSub) {
   int32_t tlen = 0;
   tlen += taosEncodeString(buf, pSub->key);
+  tlen += taosEncodeFixedI64(buf, pSub->dbUid);
   tlen += taosEncodeFixedI32(buf, pSub->vgNum);
   tlen += taosEncodeFixedI8(buf, pSub->subType);
   tlen += taosEncodeFixedI8(buf, pSub->withTbName);
@@ -336,6 +338,7 @@ int32_t tEncodeSubscribeObj(void **buf, const SMqSubscribeObj *pSub) {
 void *tDecodeSubscribeObj(const void *buf, SMqSubscribeObj *pSub) {
   //
   buf = taosDecodeStringTo(buf, pSub->key);
+  buf = taosDecodeFixedI64(buf, &pSub->dbUid);
   buf = taosDecodeFixedI32(buf, &pSub->vgNum);
   buf = taosDecodeFixedI8(buf, &pSub->subType);
   buf = taosDecodeFixedI8(buf, &pSub->withTbName);

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

@@ -175,27 +175,20 @@ static int32_t mndSplitSubscribeKey(const char *key, char *topic, char *cgroup)
   return 0;
 }
 
-static SMqRebSubscribe *mndGetOrCreateRebSub(SHashObj *pHash, const char *key) {
-  SMqRebSubscribe *pRebSub = taosHashGet(pHash, key, strlen(key) + 1);
+static SMqRebInfo *mndGetOrCreateRebSub(SHashObj *pHash, const char *key) {
+  SMqRebInfo *pRebSub = taosHashGet(pHash, key, strlen(key) + 1);
   if (pRebSub == NULL) {
     pRebSub = tNewSMqRebSubscribe(key);
     if (pRebSub == NULL) {
       terrno = TSDB_CODE_OUT_OF_MEMORY;
       return NULL;
     }
-    taosHashPut(pHash, key, strlen(key) + 1, pRebSub, sizeof(SMqRebSubscribe));
+    taosHashPut(pHash, key, strlen(key) + 1, pRebSub, sizeof(SMqRebInfo));
   }
   return pRebSub;
 }
 
 static int32_t mndDoRebalance(SMnode *pMnode, const SMqRebInputObj *pInput, SMqRebOutputObj *pOutput) {
-  if (pInput->pTopic != NULL) {
-    // create subscribe
-    pOutput->pSub = mndCreateSub(pMnode, pInput->pTopic, pInput->pRebInfo->key);
-    ASSERT(taosHashGetSize(pOutput->pSub->consumerHash) == 0);
-  } else {
-    pOutput->pSub = tCloneSubscribeObj(pInput->pOldSub);
-  }
   int32_t totalVgNum = pOutput->pSub->vgNum;
 
   mInfo("mq rebalance subscription: %s, vgNum: %d", pOutput->pSub->key, pOutput->pSub->vgNum);
@@ -246,12 +239,8 @@ static int32_t mndDoRebalance(SMnode *pMnode, const SMqRebInputObj *pInput, SMqR
   }
 
   // 3. calc vg number of each consumer
-  int32_t oldSz = 0;
-  if (pInput->pOldSub) {
-    oldSz = taosHashGetSize(pInput->pOldSub->consumerHash);
-  }
-  int32_t afterRebConsumerNum =
-      oldSz + taosArrayGetSize(pInput->pRebInfo->newConsumers) - taosArrayGetSize(pInput->pRebInfo->removedConsumers);
+  int32_t afterRebConsumerNum = pInput->oldConsumerNum + taosArrayGetSize(pInput->pRebInfo->newConsumers) -
+                                taosArrayGetSize(pInput->pRebInfo->removedConsumers);
   int32_t minVgCnt = 0;
   int32_t imbConsumerNum = 0;
   // calc num
@@ -489,22 +478,34 @@ static int32_t mndProcessRebalanceReq(SNodeMsg *pMsg) {
     rebOutput.touchedConsumers = taosArrayInit(0, sizeof(void *));
     rebOutput.rebVgs = taosArrayInit(0, sizeof(SMqRebOutputVg));
 
-    SMqRebSubscribe *pRebSub = (SMqRebSubscribe *)pIter;
-    SMqSubscribeObj *pSub = mndAcquireSubscribeByKey(pMnode, pRebSub->key);
+    SMqRebInfo      *pRebInfo = (SMqRebInfo *)pIter;
+    SMqSubscribeObj *pSub = mndAcquireSubscribeByKey(pMnode, pRebInfo->key);
+
+    rebInput.pRebInfo = pRebInfo;
 
     if (pSub == NULL) {
       // split sub key and extract topic
       char topic[TSDB_TOPIC_FNAME_LEN];
       char cgroup[TSDB_CGROUP_LEN];
-      mndSplitSubscribeKey(pRebSub->key, topic, cgroup);
+      mndSplitSubscribeKey(pRebInfo->key, topic, cgroup);
       SMqTopicObj *pTopic = mndAcquireTopic(pMnode, topic);
       ASSERT(pTopic);
       taosRLockLatch(&pTopic->lock);
-      rebInput.pTopic = pTopic;
-    }
 
-    rebInput.pRebInfo = pRebSub;
-    rebInput.pOldSub = pSub;
+      rebOutput.pSub = mndCreateSub(pMnode, pTopic, pRebInfo->key);
+      ASSERT(taosHashGetSize(rebOutput.pSub->consumerHash) == 0);
+
+      taosRUnLockLatch(&pTopic->lock);
+      mndReleaseTopic(pMnode, pTopic);
+
+      rebInput.oldConsumerNum = 0;
+    } else {
+      taosRLockLatch(&pSub->lock);
+      rebInput.oldConsumerNum = taosHashGetSize(pSub->consumerHash);
+      rebOutput.pSub = tCloneSubscribeObj(pSub);
+      taosRUnLockLatch(&pSub->lock);
+      mndReleaseSubscribe(pMnode, pSub);
+    }
 
     // TODO replace assert with error check
     ASSERT(mndDoRebalance(pMnode, &rebInput, &rebOutput) == 0);
@@ -517,14 +518,6 @@ static int32_t mndProcessRebalanceReq(SNodeMsg *pMsg) {
     if (mndPersistRebResult(pMnode, pMsg, &rebOutput) < 0) {
       mError("persist rebalance output error, possibly vnode splitted or dropped");
     }
-
-    if (rebInput.pTopic) {
-      SMqTopicObj *pTopic = (SMqTopicObj *)rebInput.pTopic;
-      taosRUnLockLatch(&pTopic->lock);
-      mndReleaseTopic(pMnode, pTopic);
-    } else {
-      mndReleaseSubscribe(pMnode, pSub);
-    }
   }
 
   // reset flag