sync index

source/libs/sync/inc/syncRaftLog.h

@@ -27,6 +27,9 @@ extern "C" {
 #include "syncRaftEntry.h"
 #include "taosdef.h"
 
+#define SYNC_INDEX_BEGIN 0
+#define SYNC_INDEX_INVALID -1
+
 typedef struct SSyncLogStoreData {
   SSyncNode* pSyncNode;
   SWal*      pWal;

source/libs/sync/inc/syncUtil.h

@@ -52,6 +52,8 @@ const char* syncUtilState2String(ESyncState state);
 bool        syncUtilCanPrint(char c);
 char*       syncUtilprintBin(char* ptr, uint32_t len);
 char*       syncUtilprintBin2(char* ptr, uint32_t len);
+SyncIndex   syncUtilMinIndex(SyncIndex a, SyncIndex b);
+SyncIndex   syncUtilMaxIndex(SyncIndex a, SyncIndex b);
 
 #ifdef __cplusplus
 }

source/libs/sync/src/syncMain.c

@@ -327,33 +327,6 @@ char* syncNode2Str(const SSyncNode* pSyncNode) {
   return serialized;
 }
 
-// for debug --------------
-void syncNodePrint(SSyncNode* pObj) {
-  char* serialized = syncNode2Str(pObj);
-  printf("syncNodePrint | len:%lu | %s \n", strlen(serialized), serialized);
-  fflush(NULL);
-  free(serialized);
-}
-
-void syncNodePrint2(char* s, SSyncNode* pObj) {
-  char* serialized = syncNode2Str(pObj);
-  printf("syncNodePrint2 | len:%lu | %s | %s \n", strlen(serialized), s, serialized);
-  fflush(NULL);
-  free(serialized);
-}
-
-void syncNodeLog(SSyncNode* pObj) {
-  char* serialized = syncNode2Str(pObj);
-  sTrace("syncNodeLog | len:%lu | %s", strlen(serialized), serialized);
-  free(serialized);
-}
-
-void syncNodeLog2(char* s, SSyncNode* pObj) {
-  char* serialized = syncNode2Str(pObj);
-  sTrace("syncNodeLog2 | len:%lu | %s | %s", strlen(serialized), s, serialized);
-  free(serialized);
-}
-
 int32_t syncNodeSendMsgById(const SRaftId* destRaftId, SSyncNode* pSyncNode, SRpcMsg* pMsg) {
   SEpSet epSet;
   syncUtilraftId2EpSet(destRaftId, &epSet);
@@ -491,6 +464,33 @@ int32_t syncNodeStopHeartbeatTimer(SSyncNode* pSyncNode) {
   return 0;
 }
 
+// for debug --------------
+void syncNodePrint(SSyncNode* pObj) {
+  char* serialized = syncNode2Str(pObj);
+  printf("syncNodePrint | len:%lu | %s \n", strlen(serialized), serialized);
+  fflush(NULL);
+  free(serialized);
+}
+
+void syncNodePrint2(char* s, SSyncNode* pObj) {
+  char* serialized = syncNode2Str(pObj);
+  printf("syncNodePrint2 | len:%lu | %s | %s \n", strlen(serialized), s, serialized);
+  fflush(NULL);
+  free(serialized);
+}
+
+void syncNodeLog(SSyncNode* pObj) {
+  char* serialized = syncNode2Str(pObj);
+  sTrace("syncNodeLog | len:%lu | %s", strlen(serialized), serialized);
+  free(serialized);
+}
+
+void syncNodeLog2(char* s, SSyncNode* pObj) {
+  char* serialized = syncNode2Str(pObj);
+  sTrace("syncNodeLog2 | len:%lu | %s | %s", strlen(serialized), s, serialized);
+  free(serialized);
+}
+
 // ------ local funciton ---------
 static int32_t syncNodeOnPingCb(SSyncNode* ths, SyncPing* pMsg) {
   int32_t ret = 0;

source/libs/sync/src/syncRaftLog.c

@@ -130,7 +130,7 @@ cJSON* logStore2Json(SSyncLogStore* pLogStore) {
   cJSON_AddStringToObject(pRoot, "pSyncNode", u64buf);
   snprintf(u64buf, sizeof(u64buf), "%p", pData->pWal);
   cJSON_AddStringToObject(pRoot, "pWal", u64buf);
-  snprintf(u64buf, sizeof(u64buf), "%lu", logStoreLastIndex(pLogStore));
+  snprintf(u64buf, sizeof(u64buf), "%ld", logStoreLastIndex(pLogStore));
   cJSON_AddStringToObject(pRoot, "LastIndex", u64buf);
   snprintf(u64buf, sizeof(u64buf), "%lu", logStoreLastTerm(pLogStore));
   cJSON_AddStringToObject(pRoot, "LastTerm", u64buf);

source/libs/sync/src/syncReplication.c

@@ -14,7 +14,9 @@
  */
 
 #include "syncReplication.h"
+#include "syncIndexMgr.h"
 #include "syncMessage.h"
+#include "syncRaftEntry.h"
 
 // TLA+ Spec
 // AppendEntries(i, j) ==
@@ -42,7 +44,24 @@
 //    /\ UNCHANGED <<serverVars, candidateVars, leaderVars, logVars>>
 //
 int32_t syncNodeAppendEntriesPeers(SSyncNode* pSyncNode) {
+  assert(pSyncNode->state == TAOS_SYNC_STATE_LEADER);
+
   int32_t ret = 0;
+  for (int i = 0; i < pSyncNode->peersNum; ++i) {
+    SRaftId*  pDestId = &(pSyncNode->peersId[i]);
+    SyncIndex nextIndex = syncIndexMgrGetIndex(pSyncNode->pNextIndex, pDestId);
+    SyncIndex preLogIndex = nextIndex - 1;
+    SyncTerm  preLogTerm = 0;
+    if (preLogIndex >= 0) {
+      SSyncRaftEntry* pPreEntry = pSyncNode->pLogStore->getEntry(pSyncNode->pLogStore, preLogIndex);
+      preLogTerm = pPreEntry->term;
+    } else {
+      preLogTerm = 0;
+    }
+    // SyncTerm lastIndex =
+    //     pSyncNode->pLogStore->getLastIndex < nextIndex ? pSyncNode->pLogStore->getLastIndex : nextIndex;
+  }
+
   return ret;
 }
 

source/libs/sync/src/syncUtil.c

@@ -184,4 +184,14 @@ char* syncUtilprintBin2(char* ptr, uint32_t len) {
     p += n;
   }
   return s;
+}
+
+SyncIndex syncUtilMinIndex(SyncIndex a, SyncIndex b) {
+  SyncIndex r = a < b ? a : b;
+  return r;
+}
+
+SyncIndex syncUtilMaxIndex(SyncIndex a, SyncIndex b) {
+  SyncIndex r = a > b ? a : b;
+  return r;
 }
\ No newline at end of file

source/libs/sync/test/syncLogStoreTest.cpp

@@ -81,7 +81,10 @@ SSyncNode* syncNodeInit() {
 SSyncNode* syncInitTest() { return syncNodeInit(); }
 
 void logStoreTest() {
-  logStorePrint(pSyncNode->pLogStore);
+  logStorePrint2((char*)"logStoreTest2", pSyncNode->pLogStore);
+
+  assert(pSyncNode->pLogStore->getLastIndex(pSyncNode->pLogStore) == SYNC_INDEX_INVALID);
+
   for (int i = 0; i < 5; ++i) {
     int32_t         dataLen = 10;
     SSyncRaftEntry* pEntry = syncEntryBuild(dataLen);
@@ -97,6 +100,10 @@ void logStoreTest() {
     // syncEntryPrint2((char*)"write entry:", pEntry);
     pSyncNode->pLogStore->appendEntry(pSyncNode->pLogStore, pEntry);
     syncEntryDestory(pEntry);
+
+    if (i == 0) {
+      assert(pSyncNode->pLogStore->getLastIndex(pSyncNode->pLogStore) == SYNC_INDEX_BEGIN);
+    }
   }
   logStorePrint(pSyncNode->pLogStore);
 
@@ -129,6 +136,8 @@ int main(int argc, char** argv) {
   ret = syncEnvStart();
   assert(ret == 0);
 
+  taosRemoveDir("./wal_test");
+
   pSyncNode = syncInitTest();
   assert(pSyncNode != NULL);