refactor(sync): add trace log for cache hit, cache miss

include/libs/sync/sync.h

@@ -162,6 +162,9 @@ typedef struct SSyncFSM {
 // SWal implements it
 typedef struct SSyncLogStore {
   SLRUCache* pCache;
+  int32_t    cacheHit;
+  int32_t    cacheMiss;
+
   void* data;
 
   int32_t (*syncLogUpdateCommitIndex)(struct SSyncLogStore* pLogStore, SyncIndex index);

source/libs/sync/src/syncAppendEntries.c

@@ -205,9 +205,11 @@ int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
       pLocalEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, hLocal);
       code = 0;
 
+      ths->pLogStore->cacheHit++;
       sNTrace(ths, "hit cache index:%" PRId64 ", bytes:%u, %p", appendIndex, pLocalEntry->bytes, pLocalEntry);
 
     } else {
+      ths->pLogStore->cacheMiss++;
       sNTrace(ths, "miss cache index:%" PRId64, appendIndex);
 
       code = ths->pLogStore->syncLogGetEntry(ths->pLogStore, appendIndex, &pLocalEntry);

source/libs/sync/src/syncCommit.c

@@ -117,9 +117,11 @@ void syncMaybeAdvanceCommitIndex(SSyncNode* pSyncNode) {
       if (h) {
         pEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, h);
 
+        pSyncNode->pLogStore->cacheHit++;
         sNTrace(pSyncNode, "hit cache index:%" PRId64 ", bytes:%u, %p", index, pEntry->bytes, pEntry);
 
       } else {
+        pSyncNode->pLogStore->cacheMiss++;
         sNTrace(pSyncNode, "miss cache index:%" PRId64, index);
 
         int32_t code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, index, &pEntry);

source/libs/sync/src/syncMain.c

@@ -410,9 +410,11 @@ bool syncIsReadyForRead(int64_t rid) {
           pEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, h);
           code = 0;
 
+          pSyncNode->pLogStore->cacheHit++;
           sNTrace(pSyncNode, "hit cache index:%" PRId64 ", bytes:%u, %p", lastIndex, pEntry->bytes, pEntry);
 
         } else {
+          pSyncNode->pLogStore->cacheMiss++;
           sNTrace(pSyncNode, "miss cache index:%" PRId64, lastIndex);
 
           code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, lastIndex, &pEntry);
@@ -1850,9 +1852,11 @@ SyncTerm syncNodeGetPreTerm(SSyncNode* pSyncNode, SyncIndex index) {
     pPreEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, h);
     code = 0;
 
+    pSyncNode->pLogStore->cacheHit++;
     sNTrace(pSyncNode, "hit cache index:%" PRId64 ", bytes:%u, %p", preIndex, pPreEntry->bytes, pPreEntry);
 
   } else {
+    pSyncNode->pLogStore->cacheMiss++;
     sNTrace(pSyncNode, "miss cache index:%" PRId64, preIndex);
 
     code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, preIndex, &pPreEntry);
@@ -2534,9 +2538,11 @@ int32_t syncNodeDoCommit(SSyncNode* ths, SyncIndex beginIndex, SyncIndex endInde
         if (h) {
           pEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, h);
 
+          ths->pLogStore->cacheHit++;
           sNTrace(ths, "hit cache index:%" PRId64 ", bytes:%u, %p", i, pEntry->bytes, pEntry);
 
         } else {
+          ths->pLogStore->cacheMiss++;
           sNTrace(ths, "miss cache index:%" PRId64, i);
 
           code = ths->pLogStore->syncLogGetEntry(ths->pLogStore, i, &pEntry);

source/libs/sync/src/syncRaftLog.c

@@ -45,6 +45,9 @@ SSyncLogStore* logStoreCreate(SSyncNode* pSyncNode) {
     return NULL;
   }
 
+  pLogStore->cacheHit = 0;
+  pLogStore->cacheMiss = 0;
+
   taosLRUCacheSetStrictCapacity(pLogStore->pCache, false);
 
   pLogStore->data = taosMemoryMalloc(sizeof(SSyncLogStoreData));

source/libs/sync/src/syncReplication.c

@@ -80,9 +80,11 @@ int32_t syncNodeReplicateOne(SSyncNode* pSyncNode, SRaftId* pDestId, bool snapsh
     pEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, h);
     code = 0;
 
+    pSyncNode->pLogStore->cacheHit++;
     sNTrace(pSyncNode, "hit cache index:%" PRId64 ", bytes:%u, %p", nextIndex, pEntry->bytes, pEntry);
 
   } else {
+    pSyncNode->pLogStore->cacheMiss++;
     sNTrace(pSyncNode, "miss cache index:%" PRId64, nextIndex);
 
     code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, nextIndex, &pEntry);

source/libs/sync/src/syncUtil.c

@@ -242,6 +242,9 @@ void syncPrintNodeLog(const char* flags, ELogLevel level, int32_t dflag, SSyncNo
     logBeginIndex = pNode->pLogStore->syncLogBeginIndex(pNode->pLogStore);
   }
 
+  int32_t cacheHit = pNode->pLogStore->cacheHit;
+  int32_t cacheMiss = pNode->pLogStore->cacheMiss;
+
   char cfgStr[1024];
   if (pNode->pRaftCfg != NULL) {
     syncCfg2SimpleStr(&(pNode->pRaftCfg->cfg), cfgStr, sizeof(cfgStr));
@@ -280,13 +283,13 @@ void syncPrintNodeLog(const char* flags, ELogLevel level, int32_t dflag, SSyncNo
         "vgId:%d, sync %s "
         "%s"
         ", tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", min:%" PRId64 ", snap:%" PRId64
-        ", snap-tm:%" PRIu64 ", elt-num:%d, bl-num:%d, cc-num:%d, aq:%d, snaping:%" PRId64 ", r-num:%d, lcfg:%" PRId64
+        ", snap-tm:%" PRIu64 ", elt-num:%d, bl-num:%d, cc-num:%d, hit:%d, mis:%d, aq:%d, snaping:%" PRId64
-        ", chging:%d, rsto:%d, dquorum:%d, elt:%" PRId64 ", hb:%" PRId64 ", %s, %s, %s, %s",
+        ", r-num:%d, lcfg:%" PRId64 ", chging:%d, rsto:%d, dquorum:%d, elt:%" PRId64 ", hb:%" PRId64 ", %s, %s, %s, %s",
         pNode->vgId, syncStr(pNode->state), eventLog, currentTerm, pNode->commitIndex, logBeginIndex, logLastIndex,
         pNode->minMatchIndex, snapshot.lastApplyIndex, snapshot.lastApplyTerm, pNode->electNum, pNode->becomeLeaderNum,
-        pNode->configChangeNum, aqItems, pNode->snapshottingIndex, pNode->replicaNum, pNode->pRaftCfg->lastConfigIndex,
+        pNode->configChangeNum, cacheHit, cacheMiss, aqItems, pNode->snapshottingIndex, pNode->replicaNum,
-        pNode->changing, pNode->restoreFinish, quorum, pNode->electTimerLogicClock, pNode->heartbeatTimerLogicClockUser,
+        pNode->pRaftCfg->lastConfigIndex, pNode->changing, pNode->restoreFinish, quorum, pNode->electTimerLogicClock,
-        peerStr, cfgStr, hbTimeStr, hbrTimeStr);
+        pNode->heartbeatTimerLogicClockUser, peerStr, cfgStr, hbTimeStr, hbrTimeStr);
   }
 }