feat(tmq): show subcription

include/common/systable.h

@@ -46,7 +46,6 @@ extern "C" {
 
 #define TSDB_PERFORMANCE_SCHEMA_DB     "performance_schema"
 #define TSDB_PERFS_TABLE_SMAS          "smas"
-#define TSDB_PERFS_TABLE_SUBSCRIBES           "subscribes"
 #define TSDB_PERFS_TABLE_CONNECTIONS   "connections"
 #define TSDB_PERFS_TABLE_QUERIES       "queries"
 #define TSDB_PERFS_TABLE_TOPICS        "topics"

include/common/tmsg.h

@@ -99,7 +99,7 @@ typedef enum _mgmt_table {
   TSDB_MGMT_TABLE_VGROUP,
   TSDB_MGMT_TABLE_TOPICS,
   TSDB_MGMT_TABLE_CONSUMERS,
-  TSDB_MGMT_TABLE_SUBSCRIBES,
+  TSDB_MGMT_TABLE_SUBSCRIPTIONS,
   TSDB_MGMT_TABLE_TRANS,
   TSDB_MGMT_TABLE_SMAS,
   TSDB_MGMT_TABLE_CONFIGS,

source/common/src/systable.c

@@ -273,8 +273,8 @@ static const SSysDbTableSchema consumerSchema[] = {
 };
 
 static const SSysDbTableSchema subscriptionSchema[] = {
-    {.name = "topic_name", .bytes = SYSTABLE_SCH_TABLE_NAME_LEN, .type = TSDB_DATA_TYPE_BINARY},
+    {.name = "topic_name", .bytes = TSDB_TOPIC_FNAME_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_BINARY},
-    {.name = "group_id", .bytes = SYSTABLE_SCH_TABLE_NAME_LEN, .type = TSDB_DATA_TYPE_BINARY},
+    {.name = "group_id", .bytes = TSDB_CGROUP_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_BINARY},
     {.name = "vgroup_id", .bytes = 4, .type = TSDB_DATA_TYPE_INT},
     {.name = "consumer_id", .bytes = 8, .type = TSDB_DATA_TYPE_BIGINT},
 };

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

@@ -85,8 +85,8 @@ static int32_t convertToRetrieveType(char *name, int32_t len) {
     type = TSDB_MGMT_TABLE_VGROUP;
   } else if (strncasecmp(name, TSDB_PERFS_TABLE_CONSUMERS, len) == 0) {
     type = TSDB_MGMT_TABLE_CONSUMERS;
-  } else if (strncasecmp(name, TSDB_PERFS_TABLE_SUBSCRIBES, len) == 0) {
+  } else if (strncasecmp(name, TSDB_PERFS_TABLE_SUBSCRIPTIONS, len) == 0) {
-    type = TSDB_MGMT_TABLE_SUBSCRIBES;
+    type = TSDB_MGMT_TABLE_SUBSCRIPTIONS;
   } else if (strncasecmp(name, TSDB_PERFS_TABLE_TRANS, len) == 0) {
     type = TSDB_MGMT_TABLE_TRANS;
   } else if (strncasecmp(name, TSDB_PERFS_TABLE_SMAS, len) == 0) {

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

@@ -44,6 +44,9 @@ static int32_t  mndSubActionUpdate(SSdb *pSdb, SMqSubscribeObj *pOldSub, SMqSubs
 static int32_t mndProcessRebalanceReq(SNodeMsg *pMsg);
 static int32_t mndProcessSubscribeInternalRsp(SNodeMsg *pMsg);
 
+static int32_t mndRetrieveSubscribe(SNodeMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rows);
+static void    mndCancelGetNextSubscribe(SMnode *pMnode, void *pIter);
+
 static int32_t mndSetSubRedoLogs(SMnode *pMnode, STrans *pTrans, SMqSubscribeObj *pSub) {
   SSdbRaw *pRedoRaw = mndSubActionEncode(pSub);
   if (pRedoRaw == NULL) return -1;
@@ -71,6 +74,10 @@ int32_t mndInitSubscribe(SMnode *pMnode) {
 
   mndSetMsgHandle(pMnode, TDMT_VND_MQ_VG_CHANGE_RSP, mndProcessSubscribeInternalRsp);
   mndSetMsgHandle(pMnode, TDMT_MND_MQ_DO_REBALANCE, mndProcessRebalanceReq);
+
+  mndAddShowRetrieveHandle(pMnode, TSDB_MGMT_TABLE_SUBSCRIPTIONS, mndRetrieveSubscribe);
+  mndAddShowFreeIterHandle(pMnode, TSDB_MGMT_TABLE_TOPICS, mndCancelGetNextSubscribe);
+
   return sdbSetTable(pMnode->pSdb, table);
 }
 
@@ -706,3 +713,124 @@ int32_t mndDropSubByDB(SMnode *pMnode, STrans *pTrans, SDbObj *pDb) {
 END:
   return code;
 }
+
+static int32_t mndRetrieveSubscribe(SNodeMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rowsCapacity) {
+  SMnode          *pMnode = pReq->pNode;
+  SSdb            *pSdb = pMnode->pSdb;
+  int32_t          numOfRows = 0;
+  SMqSubscribeObj *pSub = NULL;
+
+  while (numOfRows < rowsCapacity) {
+    pShow->pIter = sdbFetch(pSdb, SDB_SUBSCRIBE, pShow->pIter, (void **)&pSub);
+    if (pShow->pIter == NULL) break;
+
+    taosRLockLatch(&pSub->lock);
+
+    if (numOfRows + pSub->vgNum > rowsCapacity) {
+      blockDataEnsureCapacity(pBlock, numOfRows + pSub->vgNum);
+    }
+
+    SMqConsumerEp *pConsumerEp = NULL;
+    void          *pIter = NULL;
+    while (1) {
+      pIter = taosHashIterate(pSub->consumerHash, pIter);
+      if (pIter == NULL) break;
+      pConsumerEp = (SMqConsumerEp *)pIter;
+
+      int32_t sz = taosArrayGetSize(pConsumerEp->vgs);
+      for (int32_t j = 0; j < sz; j++) {
+        SMqVgEp *pVgEp = taosArrayGetP(pConsumerEp->vgs, j);
+
+        SColumnInfoData *pColInfo;
+        int32_t          cols = 0;
+
+        // topic and cgroup
+        char topic[TSDB_TOPIC_FNAME_LEN + VARSTR_HEADER_SIZE] = {0};
+        char cgroup[TSDB_CGROUP_LEN + VARSTR_HEADER_SIZE] = {0};
+        mndSplitSubscribeKey(pSub->key, topic, cgroup);
+        varDataSetLen(topic, strlen(varDataVal(topic)));
+        varDataSetLen(cgroup, strlen(varDataVal(cgroup)));
+
+        pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+        colDataAppend(pColInfo, numOfRows, (const char *)topic, false);
+
+        pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+        colDataAppend(pColInfo, numOfRows, (const char *)cgroup, false);
+
+        // vg id
+        pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+        colDataAppend(pColInfo, numOfRows, (const char *)&pVgEp->vgId, false);
+
+        // consumer id
+        pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+        colDataAppend(pColInfo, numOfRows, (const char *)&pConsumerEp->consumerId, false);
+
+        // offset
+#if 0
+      // subscribe time
+      pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+      colDataAppend(pColInfo, numOfRows, (const char *)&pSub->subscribeTime, false);
+
+      // rebalance time
+      pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+      colDataAppend(pColInfo, numOfRows, (const char *)&pSub->rebalanceTime, pConsumer->rebalanceTime == 0);
+#endif
+
+        numOfRows++;
+      }
+    }
+
+    int32_t sz = taosArrayGetSize(pSub->unassignedVgs);
+    for (int32_t i = 0; i < sz; i++) {
+      SMqVgEp *pVgEp = taosArrayGetP(pSub->unassignedVgs, i);
+
+      SColumnInfoData *pColInfo;
+      int32_t          cols = 0;
+
+      // topic and cgroup
+      char topic[TSDB_TOPIC_FNAME_LEN + VARSTR_HEADER_SIZE] = {0};
+      char cgroup[TSDB_CGROUP_LEN + VARSTR_HEADER_SIZE] = {0};
+      mndSplitSubscribeKey(pSub->key, topic, cgroup);
+      varDataSetLen(topic, strlen(varDataVal(topic)));
+      varDataSetLen(cgroup, strlen(varDataVal(cgroup)));
+
+      pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+      colDataAppend(pColInfo, numOfRows, (const char *)topic, false);
+
+      pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+      colDataAppend(pColInfo, numOfRows, (const char *)cgroup, false);
+
+      // vg id
+      pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+      colDataAppend(pColInfo, numOfRows, (const char *)&pVgEp->vgId, false);
+
+      // consumer id
+      pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+      colDataAppend(pColInfo, numOfRows, NULL, true);
+
+      // offset
+#if 0
+      // subscribe time
+      pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+      colDataAppend(pColInfo, numOfRows, (const char *)&pSub->subscribeTime, false);
+
+      // rebalance time
+      pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+      colDataAppend(pColInfo, numOfRows, (const char *)&pSub->rebalanceTime, pConsumer->rebalanceTime == 0);
+#endif
+
+      numOfRows++;
+    }
+
+    taosRUnLockLatch(&pSub->lock);
+    sdbRelease(pSdb, pSub);
+  }
+
+  pShow->numOfRows += numOfRows;
+  return numOfRows;
+}
+
+static void mndCancelGetNextSubscribe(SMnode *pMnode, void *pIter) {
+  SSdb *pSdb = pMnode->pSdb;
+  sdbCancelFetch(pSdb, pIter);
+}

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

@@ -35,6 +35,7 @@ static int32_t mndTopicActionUpdate(SSdb *pSdb, SMqTopicObj *pTopic, SMqTopicObj
 static int32_t mndProcessCreateTopicReq(SNodeMsg *pReq);
 static int32_t mndProcessDropTopicReq(SNodeMsg *pReq);
 static int32_t mndProcessDropTopicInRsp(SNodeMsg *pRsp);
+
 static int32_t mndRetrieveTopic(SNodeMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rows);
 static void    mndCancelGetNextTopic(SMnode *pMnode, void *pIter);