enh: handle error while transfer snapshot

source/libs/sync/inc/syncInt.h

@@ -238,7 +238,7 @@ int32_t syncNodeStopPingTimer(SSyncNode* pSyncNode);
 int32_t syncNodeStartElectTimer(SSyncNode* pSyncNode, int32_t ms);
 int32_t syncNodeStopElectTimer(SSyncNode* pSyncNode);
 int32_t syncNodeRestartElectTimer(SSyncNode* pSyncNode, int32_t ms);
-int32_t syncNodeResetElectTimer(SSyncNode* pSyncNode);
+void    syncNodeResetElectTimer(SSyncNode* pSyncNode);
 int32_t syncNodeStartHeartbeatTimer(SSyncNode* pSyncNode);
 int32_t syncNodeStopHeartbeatTimer(SSyncNode* pSyncNode);
 int32_t syncNodeRestartHeartbeatTimer(SSyncNode* pSyncNode);

source/libs/sync/inc/syncPipeline.h

@@ -61,7 +61,7 @@ typedef struct SSyncLogBuffer {
 // SSyncLogRepMgr
 SSyncLogReplMgr* syncLogReplMgrCreate();
 void             syncLogReplMgrDestroy(SSyncLogReplMgr* pMgr);
-int32_t          syncLogReplMgrReset(SSyncLogReplMgr* pMgr);
+void             syncLogReplMgrReset(SSyncLogReplMgr* pMgr);
 
 int32_t          syncNodeLogReplMgrInit(SSyncNode* pNode);
 void             syncNodeLogReplMgrDestroy(SSyncNode* pNode);

source/libs/sync/inc/syncSnapshot.h

@@ -56,7 +56,7 @@ SSyncSnapshotSender *snapshotSenderCreate(SSyncNode *pSyncNode, int32_t replicaI
 void                 snapshotSenderDestroy(SSyncSnapshotSender *pSender);
 bool                 snapshotSenderIsStart(SSyncSnapshotSender *pSender);
 int32_t              snapshotSenderStart(SSyncSnapshotSender *pSender);
-int32_t              snapshotSenderStop(SSyncSnapshotSender *pSender, bool finish);
+void                 snapshotSenderStop(SSyncSnapshotSender *pSender, bool finish);
 int32_t              snapshotSend(SSyncSnapshotSender *pSender);
 int32_t              snapshotReSend(SSyncSnapshotSender *pSender);
 
@@ -79,8 +79,8 @@ typedef struct SSyncSnapshotReceiver {
 
 SSyncSnapshotReceiver *snapshotReceiverCreate(SSyncNode *pSyncNode, SRaftId fromId);
 void                   snapshotReceiverDestroy(SSyncSnapshotReceiver *pReceiver);
-int32_t                snapshotReceiverStart(SSyncSnapshotReceiver *pReceiver, SyncSnapshotSend *pBeginMsg);
-int32_t                snapshotReceiverStop(SSyncSnapshotReceiver *pReceiver);
+void                   snapshotReceiverStart(SSyncSnapshotReceiver *pReceiver, SyncSnapshotSend *pBeginMsg);
+void                   snapshotReceiverStop(SSyncSnapshotReceiver *pReceiver);
 bool                   snapshotReceiverIsStart(SSyncSnapshotReceiver *pReceiver);
 void                   snapshotReceiverForceStop(SSyncSnapshotReceiver *pReceiver);
 

source/libs/sync/src/syncMain.c

@@ -200,12 +200,15 @@ int32_t syncProcessMsg(int64_t rid, SRpcMsg* pMsg) {
       code = syncNodeOnLocalCmd(pSyncNode, pMsg);
       break;
     default:
-      sError("vgId:%d, failed to process msg:%p since invalid type:%s", pSyncNode->vgId, pMsg,
-             TMSG_INFO(pMsg->msgType));
+      terrno = TSDB_CODE_MSG_NOT_PROCESSED;
       code = -1;
   }
 
   syncNodeRelease(pSyncNode);
+  if (code != 0) {
+    sDebug("vgId:%d, failed to process sync msg:%p type:%s since 0x%x", pSyncNode->vgId, pMsg, TMSG_INFO(pMsg->msgType),
+           terrno);
+  }
   return code;
 }
 
@@ -228,8 +231,7 @@ int32_t syncSendTimeoutRsp(int64_t rid, int64_t seq) {
 
   syncNodeRelease(pNode);
   if (ret == 1) {
-    sInfo("send timeout response, seq:%" PRId64 " handle:%p ahandle:%p", seq, rpcMsg.info.handle,
-          rpcMsg.info.ahandle);
+    sInfo("send timeout response, seq:%" PRId64 " handle:%p ahandle:%p", seq, rpcMsg.info.handle, rpcMsg.info.ahandle);
     rpcSendResponse(&rpcMsg);
     return 0;
   } else {
@@ -1084,13 +1086,17 @@ SSyncNode* syncNodeOpen(SSyncInfo* pSyncInfo) {
   // snapshot senders
   for (int32_t i = 0; i < TSDB_MAX_REPLICA; ++i) {
     SSyncSnapshotSender* pSender = snapshotSenderCreate(pSyncNode, i);
-    // ASSERT(pSender != NULL);
-    (pSyncNode->senders)[i] = pSender;
-    sSDebug(pSender, "snapshot sender create new while open, data:%p", pSender);
+    if (pSender == NULL) return NULL;
+
+    pSyncNode->senders[i] = pSender;
+    sSDebug(pSender, "snapshot sender create while open sync node, data:%p", pSender);
   }
 
   // snapshot receivers
   pSyncNode->pNewNodeReceiver = snapshotReceiverCreate(pSyncNode, EMPTY_RAFT_ID);
+  if (pSyncNode->pNewNodeReceiver == NULL) return NULL;
+  sRDebug(pSyncNode->pNewNodeReceiver, "snapshot receiver create while open sync node, data:%p",
+          pSyncNode->pNewNodeReceiver);
 
   // is config changing
   pSyncNode->changing = false;
@@ -1131,10 +1137,8 @@ SSyncNode* syncNodeOpen(SSyncInfo* pSyncInfo) {
   pSyncNode->hbrSlowNum = 0;
   pSyncNode->tmrRoutineNum = 0;
 
-  sNInfo(pSyncNode, "sync open, node:%p", pSyncNode);
-  sTrace("vgId:%d, tsElectInterval:%d, tsHeartbeatInterval:%d, tsHeartbeatTimeout:%d", pSyncNode->vgId, tsElectInterval,
-         tsHeartbeatInterval, tsHeartbeatTimeout);
-
+  sNInfo(pSyncNode, "sync open, node:%p electInterval:%d heartbeatInterval:%d heartbeatTimeout:%d", pSyncNode,
+         tsElectInterval, tsHeartbeatInterval, tsHeartbeatTimeout);
   return pSyncNode;
 
 _error:
@@ -1251,6 +1255,8 @@ void syncNodePreClose(SSyncNode* pSyncNode) {
       snapshotReceiverForceStop(pSyncNode->pNewNodeReceiver);
     }
 
+    sDebug("vgId:%d, snapshot receiver destroy while preclose sync node, data:%p", pSyncNode->vgId,
+           pSyncNode->pNewNodeReceiver);
     snapshotReceiverDestroy(pSyncNode->pNewNodeReceiver);
     pSyncNode->pNewNodeReceiver = NULL;
   }
@@ -1295,15 +1301,15 @@ void syncNodeClose(SSyncNode* pSyncNode) {
   syncNodeStopHeartbeatTimer(pSyncNode);
 
   for (int32_t i = 0; i < TSDB_MAX_REPLICA; ++i) {
-    if ((pSyncNode->senders)[i] != NULL) {
-      sSTrace((pSyncNode->senders)[i], "snapshot sender destroy while close, data:%p", (pSyncNode->senders)[i]);
+    if (pSyncNode->senders[i] != NULL) {
+      sDebug("vgId:%d, snapshot sender destroy while close, data:%p", pSyncNode->vgId, pSyncNode->senders[i]);
 
-      if (snapshotSenderIsStart((pSyncNode->senders)[i])) {
-        snapshotSenderStop((pSyncNode->senders)[i], false);
+      if (snapshotSenderIsStart(pSyncNode->senders[i])) {
+        snapshotSenderStop(pSyncNode->senders[i], false);
       }
 
-      snapshotSenderDestroy((pSyncNode->senders)[i]);
-      (pSyncNode->senders)[i] = NULL;
+      snapshotSenderDestroy(pSyncNode->senders[i]);
+      pSyncNode->senders[i] = NULL;
     }
   }
 
@@ -1312,6 +1318,7 @@ void syncNodeClose(SSyncNode* pSyncNode) {
       snapshotReceiverForceStop(pSyncNode->pNewNodeReceiver);
     }
 
+    sDebug("vgId:%d, snapshot receiver destroy while close, data:%p", pSyncNode->vgId, pSyncNode->pNewNodeReceiver);
     snapshotReceiverDestroy(pSyncNode->pNewNodeReceiver);
     pSyncNode->pNewNodeReceiver = NULL;
   }
@@ -1382,8 +1389,7 @@ int32_t syncNodeRestartElectTimer(SSyncNode* pSyncNode, int32_t ms) {
   return ret;
 }
 
-int32_t syncNodeResetElectTimer(SSyncNode* pSyncNode) {
-  int32_t ret = 0;
+void syncNodeResetElectTimer(SSyncNode* pSyncNode) {
   int32_t electMS;
 
   if (pSyncNode->pRaftCfg->isStandBy) {
@@ -1391,11 +1397,11 @@ int32_t syncNodeResetElectTimer(SSyncNode* pSyncNode) {
   } else {
     electMS = syncUtilElectRandomMS(pSyncNode->electBaseLine, 2 * pSyncNode->electBaseLine);
   }
-  ret = syncNodeRestartElectTimer(pSyncNode, electMS);
+
+  (void)syncNodeRestartElectTimer(pSyncNode, electMS);
 
   sNTrace(pSyncNode, "reset elect timer, min:%d, max:%d, ms:%d", pSyncNode->electBaseLine, 2 * pSyncNode->electBaseLine,
           electMS);
-  return ret;
 }
 
 static int32_t syncNodeDoStartHeartbeatTimer(SSyncNode* pSyncNode) {
@@ -1455,23 +1461,20 @@ int32_t syncNodeRestartHeartbeatTimer(SSyncNode* pSyncNode) {
   return 0;
 }
 
-// utils --------------
 int32_t syncNodeSendMsgById(const SRaftId* destRaftId, SSyncNode* pSyncNode, SRpcMsg* pMsg) {
   SEpSet epSet;
   syncUtilRaftId2EpSet(destRaftId, &epSet);
+
   if (pSyncNode->syncSendMSg != NULL) {
-    // htonl
     syncUtilMsgHtoN(pMsg->pCont);
-
     pMsg->info.noResp = 1;
-    pSyncNode->syncSendMSg(&epSet, pMsg);
+    return pSyncNode->syncSendMSg(&epSet, pMsg);
   } else {
     sError("vgId:%d, sync send msg by id error, fp-send-msg is null", pSyncNode->vgId);
     rpcFreeCont(pMsg->pCont);
+    terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
     return -1;
   }
-
-  return 0;
 }
 
 int32_t syncNodeSendMsgByInfo(const SNodeInfo* nodeInfo, SSyncNode* pSyncNode, SRpcMsg* pMsg) {
@@ -1586,7 +1589,7 @@ void syncNodeDoConfigChange(SSyncNode* pSyncNode, SSyncCfg* pNewConfig, SyncInde
     memcpy(oldReplicasId, pSyncNode->replicasId, sizeof(oldReplicasId));
     SSyncSnapshotSender* oldSenders[TSDB_MAX_REPLICA];
     for (int32_t i = 0; i < TSDB_MAX_REPLICA; ++i) {
-      oldSenders[i] = (pSyncNode->senders)[i];
+      oldSenders[i] = pSyncNode->senders[i];
       sSTrace(oldSenders[i], "snapshot sender save old");
     }
 
@@ -1625,7 +1628,7 @@ void syncNodeDoConfigChange(SSyncNode* pSyncNode, SSyncCfg* pNewConfig, SyncInde
 
     // clear new
     for (int32_t i = 0; i < TSDB_MAX_REPLICA; ++i) {
-      (pSyncNode->senders)[i] = NULL;
+      pSyncNode->senders[i] = NULL;
     }
 
     // reset new
@@ -1640,16 +1643,16 @@ void syncNodeDoConfigChange(SSyncNode* pSyncNode, SSyncCfg* pNewConfig, SyncInde
           sNTrace(pSyncNode, "snapshot sender reset for: %" PRId64 ", newIndex:%d, %s:%d, %p",
                   (pSyncNode->replicasId)[i].addr, i, host, port, oldSenders[j]);
 
-          (pSyncNode->senders)[i] = oldSenders[j];
+          pSyncNode->senders[i] = oldSenders[j];
           oldSenders[j] = NULL;
           reset = true;
 
           // reset replicaIndex
-          int32_t oldreplicaIndex = (pSyncNode->senders)[i]->replicaIndex;
-          (pSyncNode->senders)[i]->replicaIndex = i;
+          int32_t oldreplicaIndex = pSyncNode->senders[i]->replicaIndex;
+          pSyncNode->senders[i]->replicaIndex = i;
 
           sNTrace(pSyncNode, "snapshot sender udpate replicaIndex from %d to %d, %s:%d, %p, reset:%d", oldreplicaIndex,
-                  i, host, port, (pSyncNode->senders)[i], reset);
+                  i, host, port, pSyncNode->senders[i], reset);
 
           break;
         }
@@ -1658,18 +1661,23 @@ void syncNodeDoConfigChange(SSyncNode* pSyncNode, SSyncCfg* pNewConfig, SyncInde
 
     // create new
     for (int32_t i = 0; i < TSDB_MAX_REPLICA; ++i) {
-      if ((pSyncNode->senders)[i] == NULL) {
-        (pSyncNode->senders)[i] = snapshotSenderCreate(pSyncNode, i);
-        sSTrace((pSyncNode->senders)[i], "snapshot sender create new while reconfig, data:%p", (pSyncNode->senders)[i]);
+      if (pSyncNode->senders[i] == NULL) {
+        pSyncNode->senders[i] = snapshotSenderCreate(pSyncNode, i);
+        if (pSyncNode->senders[i] == NULL) {
+          // will be created later while send snapshot
+          sSError(pSyncNode->senders[i], "snapshot sender create failed while reconfig");
+        } else {
+          sSDebug(pSyncNode->senders[i], "snapshot sender create while reconfig, data:%p", pSyncNode->senders[i]);
+        }
       } else {
-        sSTrace((pSyncNode->senders)[i], "snapshot sender already exist, data:%p", (pSyncNode->senders)[i]);
+        sSDebug(pSyncNode->senders[i], "snapshot sender already exist, data:%p", pSyncNode->senders[i]);
       }
     }
 
     // free old
     for (int32_t i = 0; i < TSDB_MAX_REPLICA; ++i) {
       if (oldSenders[i] != NULL) {
-        sNTrace(pSyncNode, "snapshot sender destroy old, data:%p replica-index:%d", oldSenders[i], i);
+        sSDebug(oldSenders[i], "snapshot sender destroy old, data:%p replica-index:%d", oldSenders[i], i);
         snapshotSenderDestroy(oldSenders[i]);
         oldSenders[i] = NULL;
       }
@@ -1844,8 +1852,8 @@ void syncNodeBecomeLeader(SSyncNode* pSyncNode, const char* debugStr) {
   SSyncSnapshotSender* pMySender = syncNodeGetSnapshotSender(pSyncNode, &(pSyncNode->myRaftId));
   if (pMySender != NULL) {
     for (int32_t i = 0; i < pSyncNode->pMatchIndex->replicaNum; ++i) {
-      if ((pSyncNode->senders)[i]->privateTerm > pMySender->privateTerm) {
-        pMySender->privateTerm = (pSyncNode->senders)[i]->privateTerm;
+      if (pSyncNode->senders[i]->privateTerm > pMySender->privateTerm) {
+        pMySender->privateTerm = pSyncNode->senders[i]->privateTerm;
       }
     }
     (pMySender->privateTerm) += 100;

source/libs/sync/src/syncPipeline.c

@@ -566,7 +566,9 @@ _out:
   return ret;
 }
 
-int32_t syncLogReplMgrReset(SSyncLogReplMgr* pMgr) {
+void syncLogReplMgrReset(SSyncLogReplMgr* pMgr) {
+  if (pMgr == NULL) return;
+
   ASSERT(pMgr->startIndex >= 0);
   for (SyncIndex index = pMgr->startIndex; index < pMgr->endIndex; index++) {
     memset(&pMgr->states[index % pMgr->size], 0, sizeof(pMgr->states[0]));
@@ -576,7 +578,6 @@ int32_t syncLogReplMgrReset(SSyncLogReplMgr* pMgr) {
   pMgr->endIndex = 0;
   pMgr->restored = false;
   pMgr->retryBackoff = 0;
-  return 0;
 }
 
 int32_t syncLogReplMgrRetryOnNeed(SSyncLogReplMgr* pMgr, SSyncNode* pNode) {