enh(sync): syncNodeRequestVotePeersSnapshot

include/libs/sync/syncTools.h

@@ -460,6 +460,7 @@ int32_t syncNodeOnRequestVoteCb(SSyncNode* ths, SyncRequestVote* pMsg);
 int32_t syncNodeOnRequestVoteReplyCb(SSyncNode* ths, SyncRequestVoteReply* pMsg);
 int32_t syncNodeOnAppendEntriesCb(SSyncNode* ths, SyncAppendEntries* pMsg);
 int32_t syncNodeOnAppendEntriesReplyCb(SSyncNode* ths, SyncAppendEntriesReply* pMsg);
+
 int32_t syncNodeOnRequestVoteSnapshotCb(SSyncNode* ths, SyncRequestVote* pMsg);
 int32_t syncNodeOnRequestVoteReplySnapshotCb(SSyncNode* ths, SyncRequestVoteReply* pMsg);
 int32_t syncNodeOnAppendEntriesSnapshotCb(SSyncNode* ths, SyncAppendEntries* pMsg);

source/libs/sync/src/syncElection.c

@@ -50,7 +50,25 @@ int32_t syncNodeRequestVotePeers(SSyncNode* pSyncNode) {
   return ret;
 }
 
-int32_t syncNodeRequestVotePeersSnapshot(SSyncNode* pSyncNode) { return 0; }
+int32_t syncNodeRequestVotePeersSnapshot(SSyncNode* pSyncNode) {
+  assert(pSyncNode->state == TAOS_SYNC_STATE_CANDIDATE);
+
+  int32_t ret = 0;
+  for (int i = 0; i < pSyncNode->peersNum; ++i) {
+    SyncRequestVote* pMsg = syncRequestVoteBuild(pSyncNode->vgId);
+    pMsg->srcId = pSyncNode->myRaftId;
+    pMsg->destId = pSyncNode->peersId[i];
+    pMsg->term = pSyncNode->pRaftStore->currentTerm;
+
+    ret = syncNodeGetLastIndexTerm(pSyncNode, &(pMsg->lastLogIndex), &(pMsg->lastLogTerm));
+    ASSERT(ret == 0);
+
+    ret = syncNodeRequestVote(pSyncNode, &pSyncNode->peersId[i], pMsg);
+    ASSERT(ret == 0);
+    syncRequestVoteDestroy(pMsg);
+  }
+  return ret;
+}
 
 int32_t syncNodeElect(SSyncNode* pSyncNode) {
   int32_t ret = 0;