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Star 22016
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T
TDengine
提交 70742ba4 编写于 作者: L Liu Jicong
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add mndtopic

上级 b2574fa2
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Showing with 989 addition and 6 deletion
include/common/taosmsg.h
浏览文件 @ 70742ba4
......@@ -83,6 +83,10 @@ TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_KILL_CONN, "kill-conn" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_HEARTBEAT, "heartbeat" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_SHOW, "show" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_SHOW_RETRIEVE, "retrieve" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CREATE_TOPIC, "create-topic" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_ALTER_TOPIC, "alter-topic" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DROP_TOPIC, "drop-topic" )
// message from client to qnode
// message from client to dnode
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_NETWORK_TEST, "nettest" )
......@@ -96,6 +100,11 @@ TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_NETWORK_TEST, "nettest" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CREATE_STB_IN, "create-stb-internal" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_ALTER_STB_IN, "alter-stb-internal" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DROP_STB_IN, "drop-stb-internal" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_CREATE_TOPIC_IN, "create-topic-internal" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_ALTER_TOPIC_IN, "alter-topic-internal" )
TAOS_DEFINE_MESSAGE_TYPE( TSDB_MSG_TYPE_DROP_TOPIC_IN, "drop-topic-internal" )
// message from mnode to mnode
// message from mnode to qnode
// message from mnode to dnode
......@@ -1140,6 +1149,40 @@ typedef struct SSchedulerCancelMsg {
uint64_t taskId;
} SSchedulerCancelMsg;
typedef struct {
char name[TSDB_TOPIC_FNAME_LEN];
int8_t igExists;
void* executor;
char* sql;
} SCreateTopicMsg;
typedef struct {
char name[TSDB_TABLE_FNAME_LEN];
int8_t igNotExists;
} SDropTopicMsg;
typedef struct {
char name[TSDB_TABLE_FNAME_LEN];
int8_t alterType;
SSchema schema;
} SAlterTopicMsg;
typedef struct {
SMsgHead head;
char name[TSDB_TABLE_FNAME_LEN];
uint64_t tuid;
int32_t sverson;
int32_t execLen;
char* executor;
int32_t sqlLen;
char* sql;
} SCreateTopicInternalMsg;
typedef struct {
SMsgHead head;
char name[TSDB_TABLE_FNAME_LEN];
uint64_t tuid;
} SDropTopicInternalMsg;
#pragma pack(pop)
......
include/common/tname.h
浏览文件 @ 70742ba4
......@@ -16,18 +16,22 @@
#ifndef TDENGINE_TNAME_H
#define TDENGINE_TNAME_H
#include "tdef.h"
#define TSDB_DB_NAME_T 1
#define TSDB_TABLE_NAME_T 2
#define T_NAME_ACCT 0x1u
#define T_NAME_DB 0x2u
#define T_NAME_TABLE 0x4u
#define T_NAME_TOPIC 0x8u
typedef struct SName {
uint8_t type; //db_name_t, table_name_t
int32_t acctId;
char dbname[TSDB_DB_NAME_LEN];
char tname[TSDB_TABLE_NAME_LEN];
char topicName[TSDB_TOPIC_NAME_LEN];
} SName;
int32_t tNameExtractFullName(const SName* name, char* dst);
......
include/dnode/mnode/sdb/sdb.h
浏览文件 @ 70742ba4
......@@ -16,6 +16,8 @@
#ifndef _TD_SDB_H_
#define _TD_SDB_H_
#include "os.h"
#ifdef __cplusplus
extern "C" {
#endif
......@@ -159,11 +161,12 @@ typedef enum {
SDB_USER = 5,
SDB_AUTH = 6,
SDB_ACCT = 7,
SDB_VGROUP = 8,
SDB_STB = 9,
SDB_DB = 10,
SDB_FUNC = 11,
SDB_MAX = 12
SDB_TOPIC = 8,
SDB_VGROUP = 9,
SDB_STB = 10,
SDB_DB = 11,
SDB_FUNC = 12,
SDB_MAX = 13
} ESdbType;
typedef struct SSdb SSdb;
......
include/util/taoserror.h
浏览文件 @ 70742ba4
......@@ -220,6 +220,7 @@ int32_t* taosGetErrno();
#define TSDB_CODE_MND_COLUMN_ALREAY_EXIST TAOS_DEF_ERROR_CODE(0, 0x03AA)
#define TSDB_CODE_MND_COLUMN_NOT_EXIST TAOS_DEF_ERROR_CODE(0, 0x03AB)
#define TSDB_CODE_MND_EXCEED_MAX_ROW_BYTES TAOS_DEF_ERROR_CODE(0, 0x03AC)
#define TSDB_CODE_MND_NAME_CONFLICT_WITH_TOPIC TAOS_DEF_ERROR_CODE(0, 0x03AD)
// mnode-func
#define TSDB_CODE_MND_FUNC_ALREADY_EXIST TAOS_DEF_ERROR_CODE(0, 0x03C0)
......@@ -234,6 +235,15 @@ int32_t* taosGetErrno();
#define TSDB_CODE_MND_TRANS_ALREADY_EXIST TAOS_DEF_ERROR_CODE(0, 0x03D0)
#define TSDB_CODE_MND_TRANS_NOT_EXIST TAOS_DEF_ERROR_CODE(0, 0x03D1)
// mnode-topic
#define TSDB_CODE_MND_TOPIC_ALREADY_EXIST TAOS_DEF_ERROR_CODE(0, 0x03E0)
#define TSDB_CODE_MND_TOPIC_NOT_EXIST TAOS_DEF_ERROR_CODE(0, 0x03E1)
#define TSDB_CODE_MND_TOO_MANY_TOPICS TAOS_DEF_ERROR_CODE(0, 0x03E2)
#define TSDB_CODE_MND_INVALID_TOPIC TAOS_DEF_ERROR_CODE(0, 0x03E3)
#define TSDB_CODE_MND_INVALID_TOPIC_OPTION TAOS_DEF_ERROR_CODE(0, 0x03E4)
#define TSDB_CODE_MND_TOPIC_OPTION_UNCHNAGED TAOS_DEF_ERROR_CODE(0, 0x03E5)
#define TSDB_CODE_MND_NAME_CONFLICT_WITH_STB TAOS_DEF_ERROR_CODE(0, 0x03E6)
// dnode
#define TSDB_CODE_DND_ACTION_IN_PROGRESS TAOS_DEF_ERROR_CODE(0, 0x0400)
#define TSDB_CODE_DND_EXITING TAOS_DEF_ERROR_CODE(0, 0x0401)
......
include/util/tdef.h
浏览文件 @ 70742ba4
......@@ -163,6 +163,7 @@ do { \
#define TSDB_NODE_NAME_LEN 64
#define TSDB_TABLE_NAME_LEN 193 // it is a null-terminated string
#define TSDB_TOPIC_NAME_LEN 193 // it is a null-terminated string
#define TSDB_DB_NAME_LEN 65
#define TSDB_FULL_DB_NAME_LEN (TSDB_ACCT_ID_LEN + TSDB_DB_NAME_LEN)
......@@ -175,6 +176,7 @@ do { \
#define TSDB_TYPE_STR_MAX_LEN 32
#define TSDB_TABLE_FNAME_LEN (TSDB_FULL_DB_NAME_LEN + TSDB_TABLE_NAME_LEN)
#define TSDB_TOPIC_FNAME_LEN TSDB_TABLE_FNAME_LEN
#define TSDB_COL_NAME_LEN 65
#define TSDB_MAX_SAVED_SQL_LEN TSDB_MAX_COLUMNS * 64
#define TSDB_MAX_SQL_LEN TSDB_PAYLOAD_SIZE
......
source/dnode/mnode/impl/inc/mndDef.h
浏览文件 @ 70742ba4
......@@ -285,6 +285,21 @@ typedef struct {
char payload[];
} SShowObj;
typedef struct {
char name[TSDB_TOPIC_FNAME_LEN];
char db[TSDB_FULL_DB_NAME_LEN];
int64_t createTime;
int64_t updateTime;
uint64_t uid;
uint64_t dbUid;
int32_t version;
SRWLatch lock;
int32_t execLen;
void* executor;
int32_t sqlLen;
char* sql;
} STopicObj;
typedef struct SMnodeMsg {
char user[TSDB_USER_LEN];
char db[TSDB_FULL_DB_NAME_LEN];
......
source/dnode/mnode/impl/inc/mndStb.h
浏览文件 @ 70742ba4
......@@ -25,6 +25,9 @@ extern "C" {
int32_t mndInitStb(SMnode *pMnode);
void mndCleanupStb(SMnode *pMnode);
SStbObj *mndAcquireStb(SMnode *pMnode, char *stbName);
void mndReleaseStb(SMnode *pMnode, SStbObj *pStb);
#ifdef __cplusplus
}
#endif
......
source/dnode/mnode/impl/inc/mndTopic.h 0 → 100644
浏览文件 @ 70742ba4
/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _TD_MND_STB_H_
#define _TD_MND_STB_H_
#include "mndInt.h"
#ifdef __cplusplus
extern "C" {
#endif
int32_t mndInitTopic(SMnode *pMnode);
void mndCleanupTopic(SMnode *pMnode);
SStbObj *mndAcquireTopic(SMnode *pMnode, char *topicName);
void mndReleaseTopic(SMnode *pMnode, STopicObj *pTopic);
#ifdef __cplusplus
}
#endif
#endif /*_TD_MND_STB_H_*/
source/dnode/mnode/impl/src/mndStb.c
浏览文件 @ 70742ba4
......@@ -484,6 +484,16 @@ static int32_t mndProcessCreateStbMsg(SMnodeMsg *pMsg) {
}
}
//topic should have different name with stb
SStbObj *pTopic = mndAcquireStb(pMnode, pCreate->name);
if (pTopic != NULL) {
sdbRelease(pMnode->pSdb, pTopic);
terrno = TSDB_CODE_MND_NAME_CONFLICT_WITH_TOPIC;
mError("stb:%s, failed to create since %s", pCreate->name, terrstr());
return -1;
}
sdbRelease(pMnode->pSdb, pTopic);
SDbObj *pDb = mndAcquireDbByStb(pMnode, pCreate->name);
if (pDb == NULL) {
terrno = TSDB_CODE_MND_DB_NOT_SELECTED;
......@@ -891,4 +901,4 @@ static int32_t mndRetrieveStb(SMnodeMsg *pMsg, SShowObj *pShow, char *data, int3
static void mndCancelGetNextStb(SMnode *pMnode, void *pIter) {
SSdb *pSdb = pMnode->pSdb;
sdbCancelFetch(pSdb, pIter);
}
\ No newline at end of file
}
source/dnode/mnode/impl/src/mndTopic.c 0 → 100644
浏览文件 @ 70742ba4
/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _DEFAULT_SOURCE
#include "mndStb.h"
#include "mndDb.h"
#include "mndDnode.h"
#include "mndMnode.h"
#include "mndShow.h"
#include "mndTrans.h"
#include "mndUser.h"
#include "mndVgroup.h"
#include "tname.h"
#define TSDB_TOPIC_VER_NUMBER 1
#define TSDB_TOPIC_RESERVE_SIZE 64
static SSdbRaw *mndTopicActionEncode(STopicObj *pTopic);
static SSdbRow *mndTopicActionDecode(SSdbRaw *pRaw);
static int32_t mndTopicActionInsert(SSdb *pSdb, STopicObj *pTopic);
static int32_t mndTopicActionDelete(SSdb *pSdb, STopicObj *pTopic);
static int32_t mndTopicActionUpdate(SSdb *pSdb, STopicObj *pTopic, STopicObj *pNewTopic);
static int32_t mndProcessCreateTopicMsg(SMnodeMsg *pMsg);
static int32_t mndProcessAlterTopicMsg(SMnodeMsg *pMsg);
static int32_t mndProcessDropTopicMsg(SMnodeMsg *pMsg);
static int32_t mndProcessCreateTopicInRsp(SMnodeMsg *pMsg);
static int32_t mndProcessAlterTopicInRsp(SMnodeMsg *pMsg);
static int32_t mndProcessDropTopicInRsp(SMnodeMsg *pMsg);
static int32_t mndProcessTopicMetaMsg(SMnodeMsg *pMsg);
static int32_t mndGetTopicMeta(SMnodeMsg *pMsg, SShowObj *pShow, STableMetaMsg *pMeta);
static int32_t mndRetrieveTopic(SMnodeMsg *pMsg, SShowObj *pShow, char *data, int32_t rows);
static void mndCancelGetNextTopic(SMnode *pMnode, void *pIter);
int32_t mndInitTopic(SMnode *pMnode) {
SSdbTable table = {.sdbType = SDB_TOPIC,
.keyType = SDB_KEY_BINARY,
.encodeFp = (SdbEncodeFp)mndTopicActionEncode,
.decodeFp = (SdbDecodeFp)mndTopicActionDecode,
.insertFp = (SdbInsertFp)mndTopicActionInsert,
.updateFp = (SdbUpdateFp)mndTopicActionUpdate,
.deleteFp = (SdbDeleteFp)mndTopicActionDelete};
mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_CREATE_TOPIC, mndProcessCreateTopicMsg);
mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_ALTER_TOPIC, mndProcessAlterTopicMsg);
mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_DROP_TOPIC, mndProcessDropTopicMsg);
mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_CREATE_TOPIC_IN_RSP, mndProcessCreateTopicInRsp);
mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_ALTER_TOPIC_IN_RSP, mndProcessAlterTopicInRsp);
mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_DROP_TOPIC_IN_RSP, mndProcessDropTopicInRsp);
mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_TABLE_META, mndProcessTopicMetaMsg);
/*mndAddShowMetaHandle(pMnode, TSDB_MGMT_TOPIC, mndGetTopicMeta);*/
/*mndAddShowRetrieveHandle(pMnode, TSDB_MGMT_TOPIC, mndRetrieveTopic);*/
/*mndAddShowFreeIterHandle(pMnode, TSDB_MGMT_TOPIC, mndCancelGetNextTopic);*/
mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_CREATE_TOPIC, mndProcessCreateTopicMsg);
mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_CREATE_TOPIC_IN_RSP, mndProcessCreateTopicInRsp);
return sdbSetTable(pMnode->pSdb, table);
}
void mndCleanupTopic(SMnode *pMnode) {}
static SSdbRaw *mndTopicActionEncode(STopicObj *pTopic) {
int32_t size = sizeof(STopicObj) + TSDB_TOPIC_RESERVE_SIZE;
SSdbRaw *pRaw = sdbAllocRaw(SDB_TOPIC, TSDB_TOPIC_VER_NUMBER, size);
if (pRaw == NULL) return NULL;
int32_t dataPos = 0;
SDB_SET_BINARY(pRaw, dataPos, pTopic->name, TSDB_TABLE_FNAME_LEN);
SDB_SET_BINARY(pRaw, dataPos, pTopic->db, TSDB_FULL_DB_NAME_LEN);
SDB_SET_INT64(pRaw, dataPos, pTopic->createTime);
SDB_SET_INT64(pRaw, dataPos, pTopic->updateTime);
SDB_SET_INT64(pRaw, dataPos, pTopic->uid);
SDB_SET_INT64(pRaw, dataPos, pTopic->dbUid);
SDB_SET_INT32(pRaw, dataPos, pTopic->version);
SDB_SET_INT32(pRaw, dataPos, pTopic->execLen);
SDB_SET_BINARY(pRaw, dataPos, pTopic->executor, pTopic->execLen);
SDB_SET_INT32(pRaw, dataPos, pTopic->sqlLen);
SDB_SET_BINARY(pRaw, dataPos, pTopic->sql, pTopic->sqlLen);
SDB_SET_RESERVE(pRaw, dataPos, TSDB_TOPIC_RESERVE_SIZE);
SDB_SET_DATALEN(pRaw, dataPos);
return pRaw;
}
static SSdbRow *mndTopicActionDecode(SSdbRaw *pRaw) {
int8_t sver = 0;
if (sdbGetRawSoftVer(pRaw, &sver) != 0) return NULL;
if (sver != TSDB_TOPIC_VER_NUMBER) {
mError("failed to decode stable since %s", terrstr());
terrno = TSDB_CODE_SDB_INVALID_DATA_VER;
return NULL;
}
int32_t size = sizeof(STopicObj) + TSDB_MAX_COLUMNS * sizeof(SSchema);
SSdbRow *pRow = sdbAllocRow(size);
STopicObj *pTopic = sdbGetRowObj(pRow);
if (pTopic == NULL) return NULL;
int32_t dataPos = 0;
SDB_GET_BINARY(pRaw, pRow, dataPos, pTopic->name, TSDB_TABLE_FNAME_LEN);
SDB_GET_BINARY(pRaw, pRow, dataPos, pTopic->db, TSDB_FULL_DB_NAME_LEN);
SDB_GET_INT64(pRaw, pRow, dataPos, &pTopic->createTime);
SDB_GET_INT64(pRaw, pRow, dataPos, &pTopic->updateTime);
SDB_GET_INT64(pRaw, pRow, dataPos, &pTopic->uid);
SDB_GET_INT64(pRaw, pRow, dataPos, &pTopic->dbUid);
SDB_GET_INT32(pRaw, pRow, dataPos, &pTopic->version);
SDB_GET_INT32(pRaw, pRow, dataPos, &pTopic->execLen);
SDB_GET_BINARY(pRaw, pRow, dataPos, pTopic->executor, pTopic->execLen);
SDB_GET_INT32(pRaw, pRow, dataPos, &pTopic->sqlLen);
SDB_GET_BINARY(pRaw, pRow, dataPos, pTopic->sql, pTopic->sqlLen);
SDB_GET_RESERVE(pRaw, pRow, dataPos, TSDB_TOPIC_RESERVE_SIZE);
return pRow;
}
static int32_t mndTopicActionInsert(SSdb *pSdb, STopicObj *pTopic) {
mTrace("topic:%s, perform insert action", pTopic->name);
return 0;
}
static int32_t mndTopicActionDelete(SSdb *pSdb, STopicObj *pTopic) {
mTrace("topic:%s, perform delete action", pTopic->name);
return 0;
}
static int32_t mndTopicActionUpdate(SSdb *pSdb, STopicObj *pOldTopic, STopicObj *pNewTopic) {
mTrace("topic:%s, perform update action", pOldTopic->name);
atomic_exchange_32(&pOldTopic->updateTime, pNewTopic->updateTime);
atomic_exchange_32(&pOldTopic->version, pNewTopic->version);
taosWLockLatch(&pOldTopic->lock);
#if 0
pOldTopic->numOfColumns = pNewTopic->numOfColumns;
pOldTopic->numOfTags = pNewTopic->numOfTags;
int32_t totalCols = pNewTopic->numOfTags + pNewTopic->numOfColumns;
int32_t totalSize = totalCols * sizeof(SSchema);
if (pOldTopic->numOfTags + pOldTopic->numOfColumns < totalCols) {
void *pSchema = malloc(totalSize);
if (pSchema != NULL) {
free(pOldTopic->pSchema);
pOldTopic->pSchema = pSchema;
}
}
memcpy(pOldTopic->pSchema, pNewTopic->pSchema, totalSize);
#endif
taosWUnLockLatch(&pOldTopic->lock);
return 0;
}
STopicObj *mndAcquireTopic(SMnode *pMnode, char *topicName) {
SSdb *pSdb = pMnode->pSdb;
STopicObj *pTopic = sdbAcquire(pSdb, SDB_TOPIC, topicName);
if (pTopic == NULL) {
terrno = TSDB_CODE_MND_TOPIC_NOT_EXIST;
}
return pTopic;
}
void mndReleaseTopic(SMnode *pMnode, STopicObj *pTopic) {
SSdb *pSdb = pMnode->pSdb;
sdbRelease(pSdb, pTopic);
}
static SDbObj *mndAcquireDbByTopic(SMnode *pMnode, char *topicName) {
SName name = {0};
tNameFromString(&name, topicName, T_NAME_ACCT | T_NAME_DB | T_NAME_TOPIC);
char db[TSDB_TABLE_FNAME_LEN] = {0};
tNameGetFullDbName(&name, db);
return mndAcquireDb(pMnode, db);
}
static SCreateTopicInternalMsg *mndBuildCreateTopicMsg(SMnode *pMnode, SVgObj *pVgroup, STopicObj *pTopic) {
int32_t totalCols = 0;
int32_t contLen = sizeof(SCreateTopicInternalMsg) + pTopic->execLen + pTopic->sqlLen;
SCreateTopicInternalMsg *pCreate = calloc(1, contLen);
if (pCreate == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
return NULL;
}
pCreate->head.contLen = htonl(contLen);
pCreate->head.vgId = htonl(pVgroup->vgId);
memcpy(pCreate->name, pTopic->name, TSDB_TABLE_FNAME_LEN);
pCreate->tuid = htobe64(pTopic->uid);
pCreate->sverson = htonl(pTopic->version);
pCreate->sql = malloc(pTopic->sqlLen);
if(pCreate->sql == NULL) {
free(pCreate);
terrno = TSDB_CODE_OUT_OF_MEMORY;
return NULL;
}
memcpy(pCreate->sql, pTopic->sql, pTopic->sqlLen);
pCreate->executor = malloc(pTopic->execLen);
if(pCreate->executor == NULL) {
free(pCreate);
terrno = TSDB_CODE_OUT_OF_MEMORY;
return NULL;
}
memcpy(pCreate->executor, pTopic->executor, pTopic->execLen);
return pCreate;
}
static SDropTopicInternalMsg *mndBuildDropTopicMsg(SMnode *pMnode, SVgObj *pVgroup, STopicObj *pTopic) {
int32_t contLen = sizeof(SDropTopicInternalMsg);
SDropTopicInternalMsg *pDrop = calloc(1, contLen);
if (pDrop == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
return NULL;
}
pDrop->head.contLen = htonl(contLen);
pDrop->head.vgId = htonl(pVgroup->vgId);
memcpy(pDrop->name, pTopic->name, TSDB_TABLE_FNAME_LEN);
pDrop->tuid = htobe64(pTopic->uid);
return pDrop;
}
static int32_t mndCheckCreateTopicMsg(SCreateTopicMsg *pCreate) {
//deserialize and other stuff
return 0;
}
static int32_t mndSetCreateTopicRedoLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, STopicObj *pTopic) {
SSdbRaw *pRedoRaw = mndTopicActionEncode(pTopic);
if (pRedoRaw == NULL) return -1;
if (mndTransAppendRedolog(pTrans, pRedoRaw) != 0) return -1;
if (sdbSetRawStatus(pRedoRaw, SDB_STATUS_CREATING) != 0) return -1;
return 0;
}
static int32_t mndSetCreateTopicUndoLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, STopicObj *pTopic) {
SSdbRaw *pUndoRaw = mndTopicActionEncode(pTopic);
if (pUndoRaw == NULL) return -1;
if (mndTransAppendUndolog(pTrans, pUndoRaw) != 0) return -1;
if (sdbSetRawStatus(pUndoRaw, SDB_STATUS_DROPPED) != 0) return -1;
return 0;
}
static int32_t mndSetCreateTopicCommitLogs(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, STopicObj *pTopic) {
SSdbRaw *pCommitRaw = mndTopicActionEncode(pTopic);
if (pCommitRaw == NULL) return -1;
if (mndTransAppendCommitlog(pTrans, pCommitRaw) != 0) return -1;
if (sdbSetRawStatus(pCommitRaw, SDB_STATUS_READY) != 0) return -1;
return 0;
}
static int32_t mndSetCreateTopicRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, STopicObj *pTopic) {
SSdb *pSdb = pMnode->pSdb;
SVgObj *pVgroup = NULL;
void *pIter = NULL;
while (1) {
pIter = sdbFetch(pSdb, SDB_VGROUP, pIter, (void **)&pVgroup);
if (pIter == NULL) break;
if (pVgroup->dbUid != pDb->uid) continue;
SCreateTopicInternalMsg *pMsg = mndBuildCreateTopicMsg(pMnode, pVgroup, pTopic);
if (pMsg == NULL) {
sdbCancelFetch(pSdb, pIter);
sdbRelease(pSdb, pVgroup);
terrno = TSDB_CODE_OUT_OF_MEMORY;
return -1;
}
STransAction action = {0};
action.epSet = mndGetVgroupEpset(pMnode, pVgroup);
action.pCont = pMsg;
action.contLen = htonl(pMsg->head.contLen);
action.msgType = TSDB_MSG_TYPE_CREATE_TOPIC_IN;
if (mndTransAppendRedoAction(pTrans, &action) != 0) {
free(pMsg);
sdbCancelFetch(pSdb, pIter);
sdbRelease(pSdb, pVgroup);
return -1;
}
sdbRelease(pSdb, pVgroup);
}
return 0;
}
static int32_t mndSetCreateTopicUndoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, STopicObj *pTopic) {
SSdb *pSdb = pMnode->pSdb;
SVgObj *pVgroup = NULL;
void *pIter = NULL;
while (1) {
pIter = sdbFetch(pSdb, SDB_VGROUP, pIter, (void **)&pVgroup);
if (pIter == NULL) break;
if (pVgroup->dbUid != pDb->uid) continue;
SDropTopicInternalMsg *pMsg = mndBuildDropTopicMsg(pMnode, pVgroup, pTopic);
if (pMsg == NULL) {
sdbCancelFetch(pSdb, pIter);
sdbRelease(pSdb, pVgroup);
terrno = TSDB_CODE_OUT_OF_MEMORY;
return -1;
}
STransAction action = {0};
action.epSet = mndGetVgroupEpset(pMnode, pVgroup);
action.pCont = pMsg;
action.contLen = sizeof(SDropTopicInternalMsg);
action.msgType = TSDB_MSG_TYPE_DROP_TOPIC_IN;
if (mndTransAppendUndoAction(pTrans, &action) != 0) {
free(pMsg);
sdbCancelFetch(pSdb, pIter);
sdbRelease(pSdb, pVgroup);
return -1;
}
sdbRelease(pSdb, pVgroup);
}
return 0;
}
static int32_t mndCreateTopic(SMnode *pMnode, SMnodeMsg *pMsg, SCreateTopicMsg *pCreate, SDbObj *pDb) {
STopicObj topicObj = {0};
tstrncpy(topicObj.name, pCreate->name, TSDB_TABLE_FNAME_LEN);
tstrncpy(topicObj.db, pDb->name, TSDB_FULL_DB_NAME_LEN);
topicObj.createTime = taosGetTimestampMs();
topicObj.updateTime = topicObj.createTime;
topicObj.uid = mndGenerateUid(pCreate->name, TSDB_TABLE_FNAME_LEN);
topicObj.dbUid = pDb->uid;
topicObj.version = 1;
#if 0
int32_t totalCols = topicObj.numOfColumns + topicObj.numOfTags;
int32_t totalSize = totalCols * sizeof(SSchema);
topicObj.sql = malloc(totalSize);
if (topicObj.sql == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
return -1;
}
memcpy(topicObj.sql, pCreate->sql, totalSize);
#endif
int32_t code = 0;
STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, pMsg->rpcMsg.handle);
if (pTrans == NULL) {
mError("topic:%s, failed to create since %s", pCreate->name, terrstr());
return -1;
}
mDebug("trans:%d, used to create topic:%s", pTrans->id, pCreate->name);
if (mndSetCreateTopicRedoLogs(pMnode, pTrans, pDb, &topicObj) != 0) {
mError("trans:%d, failed to set redo log since %s", pTrans->id, terrstr());
goto CREATE_TOPIC_OVER;
}
if (mndSetCreateTopicUndoLogs(pMnode, pTrans, pDb, &topicObj) != 0) {
mError("trans:%d, failed to set undo log since %s", pTrans->id, terrstr());
goto CREATE_TOPIC_OVER;
}
if (mndSetCreateTopicCommitLogs(pMnode, pTrans, pDb, &topicObj) != 0) {
mError("trans:%d, failed to set commit log since %s", pTrans->id, terrstr());
goto CREATE_TOPIC_OVER;
}
if (mndSetCreateTopicRedoActions(pMnode, pTrans, pDb, &topicObj) != 0) {
mError("trans:%d, failed to set redo actions since %s", pTrans->id, terrstr());
goto CREATE_TOPIC_OVER;
}
if (mndSetCreateTopicUndoActions(pMnode, pTrans, pDb, &topicObj) != 0) {
mError("trans:%d, failed to set redo actions since %s", pTrans->id, terrstr());
goto CREATE_TOPIC_OVER;
}
if (mndTransPrepare(pMnode, pTrans) != 0) {
mError("trans:%d, failed to prepare since %s", pTrans->id, terrstr());
mndTransDrop(pTrans);
return -1;
}
code = 0;
CREATE_TOPIC_OVER:
mndTransDrop(pTrans);
return code;
}
static int32_t mndProcessCreateTopicMsg(SMnodeMsg *pMsg) {
SMnode *pMnode = pMsg->pMnode;
SCreateTopicMsg *pCreate = pMsg->rpcMsg.pCont;
mDebug("topic:%s, start to create", pCreate->name);
if (mndCheckCreateTopicMsg(pCreate) != 0) {
mError("topic:%s, failed to create since %s", pCreate->name, terrstr());
return -1;
}
STopicObj *pTopic = mndAcquireTopic(pMnode, pCreate->name);
if (pTopic != NULL) {
sdbRelease(pMnode->pSdb, pTopic);
if (pCreate->igExists) {
mDebug("topic:%s, already exist, ignore exist is set", pCreate->name);
return 0;
} else {
terrno = TSDB_CODE_MND_TOPIC_ALREADY_EXIST;
mError("db:%s, failed to create since %s", pCreate->name, terrstr());
return -1;
}
}
//topic should have different name with stb
SStbObj *pStb = mndAcquireStb(pMnode, pCreate->name);
if (pStb != NULL) {
sdbRelease(pMnode->pSdb, pStb);
terrno = TSDB_CODE_MND_NAME_CONFLICT_WITH_STB;
mError("topic:%s, failed to create since %s", pCreate->name, terrstr());
return -1;
}
sdbRelease(pMnode->pSdb, pStb);
SDbObj *pDb = mndAcquireDbByTopic(pMnode, pCreate->name);
if (pDb == NULL) {
terrno = TSDB_CODE_MND_DB_NOT_SELECTED;
mError("topic:%s, failed to create since %s", pCreate->name, terrstr());
return -1;
}
int32_t code = mndCreateTopic(pMnode, pMsg, pCreate, pDb);
mndReleaseDb(pMnode, pDb);
if (code != 0) {
terrno = code;
mError("topic:%s, failed to create since %s", pCreate->name, terrstr());
return -1;
}
return TSDB_CODE_MND_ACTION_IN_PROGRESS;
}
static int32_t mndCheckAlterTopicMsg(SAlterTopicMsg *pAlter) {
SSchema *pSchema = &pAlter->schema;
pSchema->colId = htonl(pSchema->colId);
pSchema->bytes = htonl(pSchema->bytes);
if (pSchema->type <= 0) {
terrno = TSDB_CODE_MND_INVALID_TOPIC_OPTION;
return -1;
}
if (pSchema->colId < 0 || pSchema->colId >= (TSDB_MAX_COLUMNS + TSDB_MAX_TAGS)) {
terrno = TSDB_CODE_MND_INVALID_TOPIC_OPTION;
return -1;
}
if (pSchema->bytes <= 0) {
terrno = TSDB_CODE_MND_INVALID_TOPIC_OPTION;
return -1;
}
if (pSchema->name[0] == 0) {
terrno = TSDB_CODE_MND_INVALID_TOPIC_OPTION;
return -1;
}
return 0;
}
static int32_t mndUpdateTopic(SMnode *pMnode, SMnodeMsg *pMsg, STopicObj *pOldTopic, STopicObj *pNewTopic) { return 0; }
static int32_t mndProcessAlterTopicMsg(SMnodeMsg *pMsg) {
SMnode *pMnode = pMsg->pMnode;
SAlterTopicMsg *pAlter = pMsg->rpcMsg.pCont;
mDebug("topic:%s, start to alter", pAlter->name);
if (mndCheckAlterTopicMsg(pAlter) != 0) {
mError("topic:%s, failed to alter since %s", pAlter->name, terrstr());
return -1;
}
STopicObj *pTopic = mndAcquireTopic(pMnode, pAlter->name);
if (pTopic == NULL) {
terrno = TSDB_CODE_MND_TOPIC_NOT_EXIST;
mError("topic:%s, failed to alter since %s", pAlter->name, terrstr());
return -1;
}
STopicObj topicObj = {0};
memcpy(&topicObj, pTopic, sizeof(STopicObj));
int32_t code = mndUpdateTopic(pMnode, pMsg, pTopic, &topicObj);
mndReleaseTopic(pMnode, pTopic);
if (code != 0) {
mError("topic:%s, failed to alter since %s", pAlter->name, tstrerror(code));
return code;
}
return TSDB_CODE_MND_ACTION_IN_PROGRESS;
}
static int32_t mndProcessAlterTopicInRsp(SMnodeMsg *pMsg) {
mndTransHandleActionRsp(pMsg);
return 0;
}
static int32_t mndSetDropTopicRedoLogs(SMnode *pMnode, STrans *pTrans, STopicObj *pTopic) {
SSdbRaw *pRedoRaw = mndTopicActionEncode(pTopic);
if (pRedoRaw == NULL) return -1;
if (mndTransAppendRedolog(pTrans, pRedoRaw) != 0) return -1;
if (sdbSetRawStatus(pRedoRaw, SDB_STATUS_DROPPING) != 0) return -1;
return 0;
}
static int32_t mndSetDropTopicUndoLogs(SMnode *pMnode, STrans *pTrans, STopicObj *pTopic) {
SSdbRaw *pUndoRaw = mndTopicActionEncode(pTopic);
if (pUndoRaw == NULL) return -1;
if (mndTransAppendUndolog(pTrans, pUndoRaw) != 0) return -1;
if (sdbSetRawStatus(pUndoRaw, SDB_STATUS_READY) != 0) return -1;
return 0;
}
static int32_t mndSetDropTopicCommitLogs(SMnode *pMnode, STrans *pTrans, STopicObj *pTopic) {
SSdbRaw *pCommitRaw = mndTopicActionEncode(pTopic);
if (pCommitRaw == NULL) return -1;
if (mndTransAppendCommitlog(pTrans, pCommitRaw) != 0) return -1;
if (sdbSetRawStatus(pCommitRaw, SDB_STATUS_DROPPED) != 0) return -1;
return 0;
}
static int32_t mndSetDropTopicRedoActions(SMnode *pMnode, STrans *pTrans, STopicObj *pTopic) { return 0; }
static int32_t mndSetDropTopicUndoActions(SMnode *pMnode, STrans *pTrans, STopicObj *pTopic) { return 0; }
static int32_t mndDropTopic(SMnode *pMnode, SMnodeMsg *pMsg, STopicObj *pTopic) {
int32_t code = -1;
STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, pMsg->rpcMsg.handle);
if (pTrans == NULL) {
mError("topic:%s, failed to drop since %s", pTopic->name, terrstr());
return -1;
}
mDebug("trans:%d, used to drop topic:%s", pTrans->id, pTopic->name);
if (mndSetDropTopicRedoLogs(pMnode, pTrans, pTopic) != 0) {
mError("trans:%d, failed to set redo log since %s", pTrans->id, terrstr());
goto DROP_TOPIC_OVER;
}
if (mndSetDropTopicUndoLogs(pMnode, pTrans, pTopic) != 0) {
mError("trans:%d, failed to set undo log since %s", pTrans->id, terrstr());
goto DROP_TOPIC_OVER;
}
if (mndSetDropTopicCommitLogs(pMnode, pTrans, pTopic) != 0) {
mError("trans:%d, failed to set commit log since %s", pTrans->id, terrstr());
goto DROP_TOPIC_OVER;
}
if (mndSetDropTopicRedoActions(pMnode, pTrans, pTopic) != 0) {
mError("trans:%d, failed to set redo actions since %s", pTrans->id, terrstr());
goto DROP_TOPIC_OVER;
}
if (mndSetDropTopicUndoActions(pMnode, pTrans, pTopic) != 0) {
mError("trans:%d, failed to set redo actions since %s", pTrans->id, terrstr());
goto DROP_TOPIC_OVER;
}
if (mndTransPrepare(pMnode, pTrans) != 0) {
mError("trans:%d, failed to prepare since %s", pTrans->id, terrstr());
goto DROP_TOPIC_OVER;
}
code = 0;
DROP_TOPIC_OVER:
mndTransDrop(pTrans);
return 0;
}
static int32_t mndProcessDropTopicMsg(SMnodeMsg *pMsg) {
SMnode *pMnode = pMsg->pMnode;
SDropTopicMsg *pDrop = pMsg->rpcMsg.pCont;
mDebug("topic:%s, start to drop", pDrop->name);
STopicObj *pTopic = mndAcquireTopic(pMnode, pDrop->name);
if (pTopic == NULL) {
if (pDrop->igNotExists) {
mDebug("topic:%s, not exist, ignore not exist is set", pDrop->name);
return 0;
} else {
terrno = TSDB_CODE_MND_TOPIC_NOT_EXIST;
mError("topic:%s, failed to drop since %s", pDrop->name, terrstr());
return -1;
}
}
int32_t code = mndDropTopic(pMnode, pMsg, pTopic);
mndReleaseTopic(pMnode, pTopic);
if (code != 0) {
terrno = code;
mError("topic:%s, failed to drop since %s", pDrop->name, terrstr());
return -1;
}
return TSDB_CODE_MND_ACTION_IN_PROGRESS;
}
static int32_t mndProcessDropTopicInRsp(SMnodeMsg *pMsg) {
mndTransHandleActionRsp(pMsg);
return 0;
}
static int32_t mndProcessTopicMetaMsg(SMnodeMsg *pMsg) {
SMnode *pMnode = pMsg->pMnode;
STableInfoMsg *pInfo = pMsg->rpcMsg.pCont;
mDebug("topic:%s, start to retrieve meta", pInfo->tableFname);
SDbObj *pDb = mndAcquireDbByTopic(pMnode, pInfo->tableFname);
if (pDb == NULL) {
terrno = TSDB_CODE_MND_DB_NOT_SELECTED;
mError("topic:%s, failed to retrieve meta since %s", pInfo->tableFname, terrstr());
return -1;
}
STopicObj *pTopic = mndAcquireTopic(pMnode, pInfo->tableFname);
if (pTopic == NULL) {
mndReleaseDb(pMnode, pDb);
terrno = TSDB_CODE_MND_INVALID_TOPIC;
mError("topic:%s, failed to get meta since %s", pInfo->tableFname, terrstr());
return -1;
}
#if 0
taosRLockLatch(&pTopic->lock);
int32_t totalCols = pTopic->numOfColumns + pTopic->numOfTags;
int32_t contLen = sizeof(STableMetaMsg) + totalCols * sizeof(SSchema);
STableMetaMsg *pMeta = rpcMallocCont(contLen);
if (pMeta == NULL) {
taosRUnLockLatch(&pTopic->lock);
mndReleaseDb(pMnode, pDb);
mndReleaseTopic(pMnode, pTopic);
terrno = TSDB_CODE_OUT_OF_MEMORY;
mError("topic:%s, failed to get meta since %s", pInfo->tableFname, terrstr());
return -1;
}
memcpy(pMeta->topicFname, pTopic->name, TSDB_TABLE_FNAME_LEN);
pMeta->numOfTags = htonl(pTopic->numOfTags);
pMeta->numOfColumns = htonl(pTopic->numOfColumns);
pMeta->precision = pDb->cfg.precision;
pMeta->tableType = TSDB_SUPER_TABLE;
pMeta->update = pDb->cfg.update;
pMeta->sversion = htonl(pTopic->version);
pMeta->tuid = htonl(pTopic->uid);
for (int32_t i = 0; i < totalCols; ++i) {
SSchema *pSchema = &pMeta->pSchema[i];
SSchema *pSrcSchema = &pTopic->pSchema[i];
memcpy(pSchema->name, pSrcSchema->name, TSDB_COL_NAME_LEN);
pSchema->type = pSrcSchema->type;
pSchema->colId = htonl(pSrcSchema->colId);
pSchema->bytes = htonl(pSrcSchema->bytes);
}
taosRUnLockLatch(&pTopic->lock);
mndReleaseDb(pMnode, pDb);
mndReleaseTopic(pMnode, pTopic);
pMsg->pCont = pMeta;
pMsg->contLen = contLen;
mDebug("topic:%s, meta is retrieved, cols:%d tags:%d", pInfo->tableFname, pTopic->numOfColumns, pTopic->numOfTags);
#endif
return 0;
}
static int32_t mndProcessCreateTopicInRsp(SMnodeMsg* pMsg) {
mndTransHandleActionRsp(pMsg);
return 0;
}
static int32_t mndGetNumOfTopics(SMnode *pMnode, char *dbName, int32_t *pNumOfTopics) {
SSdb *pSdb = pMnode->pSdb;
SDbObj *pDb = mndAcquireDb(pMnode, dbName);
if (pDb == NULL) {
terrno = TSDB_CODE_MND_DB_NOT_SELECTED;
return -1;
}
int32_t numOfTopics = 0;
void *pIter = NULL;
while (1) {
STopicObj *pTopic = NULL;
pIter = sdbFetch(pSdb, SDB_TOPIC, pIter, (void **)&pTopic);
if (pIter == NULL) break;
if (strcmp(pTopic->db, dbName) == 0) {
numOfTopics++;
}
sdbRelease(pSdb, pTopic);
}
*pNumOfTopics = numOfTopics;
return 0;
}
static int32_t mndGetTopicMeta(SMnodeMsg *pMsg, SShowObj *pShow, STableMetaMsg *pMeta) {
SMnode *pMnode = pMsg->pMnode;
SSdb *pSdb = pMnode->pSdb;
if (mndGetNumOfTopics(pMnode, pShow->db, &pShow->numOfRows) != 0) {
return -1;
}
int32_t cols = 0;
SSchema *pSchema = pMeta->pSchema;
pShow->bytes[cols] = TSDB_TABLE_NAME_LEN + VARSTR_HEADER_SIZE;
pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
strcpy(pSchema[cols].name, "name");
pSchema[cols].bytes = htonl(pShow->bytes[cols]);
cols++;
pShow->bytes[cols] = 8;
pSchema[cols].type = TSDB_DATA_TYPE_TIMESTAMP;
strcpy(pSchema[cols].name, "create_time");
pSchema[cols].bytes = htonl(pShow->bytes[cols]);
cols++;
pShow->bytes[cols] = 4;
pSchema[cols].type = TSDB_DATA_TYPE_INT;
strcpy(pSchema[cols].name, "columns");
pSchema[cols].bytes = htonl(pShow->bytes[cols]);
cols++;
pShow->bytes[cols] = 4;
pSchema[cols].type = TSDB_DATA_TYPE_INT;
strcpy(pSchema[cols].name, "tags");
pSchema[cols].bytes = htonl(pShow->bytes[cols]);
cols++;
pMeta->numOfColumns = htonl(cols);
pShow->numOfColumns = cols;
pShow->offset[0] = 0;
for (int32_t i = 1; i < cols; ++i) {
pShow->offset[i] = pShow->offset[i - 1] + pShow->bytes[i - 1];
}
pShow->numOfRows = sdbGetSize(pSdb, SDB_TOPIC);
pShow->rowSize = pShow->offset[cols - 1] + pShow->bytes[cols - 1];
strcpy(pMeta->tbFname, mndShowStr(pShow->type));
return 0;
}
static void mndExtractTableName(char *tableId, char *name) {
int pos = -1;
int num = 0;
for (pos = 0; tableId[pos] != 0; ++pos) {
if (tableId[pos] == '.') num++;
if (num == 2) break;
}
if (num == 2) {
strcpy(name, tableId + pos + 1);
}
}
static int32_t mndRetrieveTopic(SMnodeMsg *pMsg, SShowObj *pShow, char *data, int32_t rows) {
SMnode *pMnode = pMsg->pMnode;
SSdb *pSdb = pMnode->pSdb;
int32_t numOfRows = 0;
STopicObj *pTopic = NULL;
int32_t cols = 0;
char *pWrite;
char prefix[64] = {0};
tstrncpy(prefix, pShow->db, 64);
strcat(prefix, TS_PATH_DELIMITER);
int32_t prefixLen = (int32_t)strlen(prefix);
while (numOfRows < rows) {
pShow->pIter = sdbFetch(pSdb, SDB_TOPIC, pShow->pIter, (void **)&pTopic);
if (pShow->pIter == NULL) break;
if (strncmp(pTopic->name, prefix, prefixLen) != 0) {
sdbRelease(pSdb, pTopic);
continue;
}
cols = 0;
char topicName[TSDB_TABLE_NAME_LEN] = {0};
tstrncpy(topicName, pTopic->name + prefixLen, TSDB_TABLE_NAME_LEN);
pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
STR_TO_VARSTR(pWrite, topicName);
cols++;
pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
*(int64_t *)pWrite = pTopic->createTime;
cols++;
/*pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;*/
/**(int32_t *)pWrite = pTopic->numOfColumns;*/
/*cols++;*/
/*pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;*/
/**(int32_t *)pWrite = pTopic->numOfTags;*/
/*cols++;*/
numOfRows++;
sdbRelease(pSdb, pTopic);
}
pShow->numOfReads += numOfRows;
mndVacuumResult(data, pShow->numOfColumns, numOfRows, rows, pShow);
return numOfRows;
}
static void mndCancelGetNextTopic(SMnode *pMnode, void *pIter) {
SSdb *pSdb = pMnode->pSdb;
sdbCancelFetch(pSdb, pIter);
}
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