homework-jianmu/source/dnode/mnode/impl/src/mndSnode.c

468 lines
14 KiB
C

/*
* 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 "mndSnode.h"
#include "mndDnode.h"
#include "mndPrivilege.h"
#include "mndShow.h"
#include "mndTrans.h"
#include "mndUser.h"
#define SNODE_VER_NUMBER 1
#define SNODE_RESERVE_SIZE 64
static SSdbRaw *mndSnodeActionEncode(SSnodeObj *pObj);
static SSdbRow *mndSnodeActionDecode(SSdbRaw *pRaw);
static int32_t mndSnodeActionInsert(SSdb *pSdb, SSnodeObj *pObj);
static int32_t mndSnodeActionUpdate(SSdb *pSdb, SSnodeObj *pOld, SSnodeObj *pNew);
static int32_t mndSnodeActionDelete(SSdb *pSdb, SSnodeObj *pObj);
static int32_t mndProcessCreateSnodeReq(SRpcMsg *pReq);
static int32_t mndProcessDropSnodeReq(SRpcMsg *pReq);
static int32_t mndRetrieveSnodes(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rows);
static void mndCancelGetNextSnode(SMnode *pMnode, void *pIter);
int32_t mndInitSnode(SMnode *pMnode) {
SSdbTable table = {
.sdbType = SDB_SNODE,
.keyType = SDB_KEY_INT32,
.encodeFp = (SdbEncodeFp)mndSnodeActionEncode,
.decodeFp = (SdbDecodeFp)mndSnodeActionDecode,
.insertFp = (SdbInsertFp)mndSnodeActionInsert,
.updateFp = (SdbUpdateFp)mndSnodeActionUpdate,
.deleteFp = (SdbDeleteFp)mndSnodeActionDelete,
};
mndSetMsgHandle(pMnode, TDMT_MND_CREATE_SNODE, mndProcessCreateSnodeReq);
mndSetMsgHandle(pMnode, TDMT_MND_DROP_SNODE, mndProcessDropSnodeReq);
mndSetMsgHandle(pMnode, TDMT_DND_CREATE_SNODE_RSP, mndTransProcessRsp);
mndSetMsgHandle(pMnode, TDMT_DND_DROP_SNODE_RSP, mndTransProcessRsp);
mndAddShowRetrieveHandle(pMnode, TSDB_MGMT_TABLE_SNODE, mndRetrieveSnodes);
mndAddShowFreeIterHandle(pMnode, TSDB_MGMT_TABLE_SNODE, mndCancelGetNextSnode);
return sdbSetTable(pMnode->pSdb, table);
}
void mndCleanupSnode(SMnode *pMnode) {}
SEpSet mndAcquireEpFromSnode(SMnode *pMnode, const SSnodeObj *pSnode) {
SEpSet epSet = {.numOfEps = 1, .inUse = 0};
memcpy(epSet.eps[0].fqdn, pSnode->pDnode->fqdn, TSDB_FQDN_LEN);
epSet.eps[0].port = pSnode->pDnode->port;
return epSet;
}
SSnodeObj *mndAcquireSnode(SMnode *pMnode, int32_t snodeId) {
SSnodeObj *pObj = sdbAcquire(pMnode->pSdb, SDB_SNODE, &snodeId);
if (pObj == NULL && terrno == TSDB_CODE_SDB_OBJ_NOT_THERE) {
terrno = TSDB_CODE_MND_SNODE_NOT_EXIST;
}
return pObj;
}
void mndReleaseSnode(SMnode *pMnode, SSnodeObj *pObj) {
SSdb *pSdb = pMnode->pSdb;
sdbRelease(pSdb, pObj);
}
static SSdbRaw *mndSnodeActionEncode(SSnodeObj *pObj) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
SSdbRaw *pRaw = sdbAllocRaw(SDB_SNODE, SNODE_VER_NUMBER, sizeof(SSnodeObj) + SNODE_RESERVE_SIZE);
if (pRaw == NULL) goto _OVER;
int32_t dataPos = 0;
SDB_SET_INT32(pRaw, dataPos, pObj->id, _OVER)
SDB_SET_INT64(pRaw, dataPos, pObj->createdTime, _OVER)
SDB_SET_INT64(pRaw, dataPos, pObj->updateTime, _OVER)
SDB_SET_RESERVE(pRaw, dataPos, SNODE_RESERVE_SIZE, _OVER)
terrno = 0;
_OVER:
if (terrno != 0) {
mError("snode:%d, failed to encode to raw:%p since %s", pObj->id, pRaw, terrstr());
sdbFreeRaw(pRaw);
return NULL;
}
mTrace("snode:%d, encode to raw:%p, row:%p", pObj->id, pRaw, pObj);
return pRaw;
}
static SSdbRow *mndSnodeActionDecode(SSdbRaw *pRaw) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
SSdbRow *pRow = NULL;
SSnodeObj *pObj = NULL;
int8_t sver = 0;
if (sdbGetRawSoftVer(pRaw, &sver) != 0) goto _OVER;
if (sver != SNODE_VER_NUMBER) {
terrno = TSDB_CODE_SDB_INVALID_DATA_VER;
goto _OVER;
}
pRow = sdbAllocRow(sizeof(SSnodeObj));
if (pRow == NULL) goto _OVER;
pObj = sdbGetRowObj(pRow);
if (pObj == NULL) goto _OVER;
int32_t dataPos = 0;
SDB_GET_INT32(pRaw, dataPos, &pObj->id, _OVER)
SDB_GET_INT64(pRaw, dataPos, &pObj->createdTime, _OVER)
SDB_GET_INT64(pRaw, dataPos, &pObj->updateTime, _OVER)
SDB_GET_RESERVE(pRaw, dataPos, SNODE_RESERVE_SIZE, _OVER)
terrno = 0;
_OVER:
if (terrno != 0) {
mError("snode:%d, failed to decode from raw:%p since %s", pObj == NULL ? 0 : pObj->id, pRaw, terrstr());
taosMemoryFreeClear(pRow);
return NULL;
}
mTrace("snode:%d, decode from raw:%p, row:%p", pObj->id, pRaw, pObj);
return pRow;
}
static int32_t mndSnodeActionInsert(SSdb *pSdb, SSnodeObj *pObj) {
mTrace("snode:%d, perform insert action, row:%p", pObj->id, pObj);
pObj->pDnode = sdbAcquire(pSdb, SDB_DNODE, &pObj->id);
if (pObj->pDnode == NULL) {
terrno = TSDB_CODE_MND_DNODE_NOT_EXIST;
mError("snode:%d, failed to perform insert action since %s", pObj->id, terrstr());
return -1;
}
return 0;
}
static int32_t mndSnodeActionDelete(SSdb *pSdb, SSnodeObj *pObj) {
mTrace("snode:%d, perform delete action, row:%p", pObj->id, pObj);
if (pObj->pDnode != NULL) {
sdbRelease(pSdb, pObj->pDnode);
pObj->pDnode = NULL;
}
return 0;
}
static int32_t mndSnodeActionUpdate(SSdb *pSdb, SSnodeObj *pOld, SSnodeObj *pNew) {
mTrace("snode:%d, perform update action, old row:%p new row:%p", pOld->id, pOld, pNew);
pOld->updateTime = pNew->updateTime;
return 0;
}
static int32_t mndSetCreateSnodeRedoLogs(STrans *pTrans, SSnodeObj *pObj) {
SSdbRaw *pRedoRaw = mndSnodeActionEncode(pObj);
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 mndSetCreateSnodeUndoLogs(STrans *pTrans, SSnodeObj *pObj) {
SSdbRaw *pUndoRaw = mndSnodeActionEncode(pObj);
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 mndSetCreateSnodeCommitLogs(STrans *pTrans, SSnodeObj *pObj) {
SSdbRaw *pCommitRaw = mndSnodeActionEncode(pObj);
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 mndSetCreateSnodeRedoActions(STrans *pTrans, SDnodeObj *pDnode, SSnodeObj *pObj) {
SDCreateSnodeReq createReq = {0};
createReq.dnodeId = pDnode->id;
int32_t contLen = tSerializeSCreateDropMQSNodeReq(NULL, 0, &createReq);
void *pReq = taosMemoryMalloc(contLen);
if (pReq == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
return -1;
}
tSerializeSCreateDropMQSNodeReq(pReq, contLen, &createReq);
STransAction action = {0};
action.epSet = mndGetDnodeEpset(pDnode);
action.pCont = pReq;
action.contLen = contLen;
action.msgType = TDMT_DND_CREATE_SNODE;
action.acceptableCode = TSDB_CODE_SNODE_ALREADY_DEPLOYED;
if (mndTransAppendRedoAction(pTrans, &action) != 0) {
taosMemoryFree(pReq);
return -1;
}
return 0;
}
static int32_t mndSetCreateSnodeUndoActions(STrans *pTrans, SDnodeObj *pDnode, SSnodeObj *pObj) {
SDDropSnodeReq dropReq = {0};
dropReq.dnodeId = pDnode->id;
int32_t contLen = tSerializeSCreateDropMQSNodeReq(NULL, 0, &dropReq);
void *pReq = taosMemoryMalloc(contLen);
if (pReq == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
return -1;
}
tSerializeSCreateDropMQSNodeReq(pReq, contLen, &dropReq);
STransAction action = {0};
action.epSet = mndGetDnodeEpset(pDnode);
action.pCont = pReq;
action.contLen = contLen;
action.msgType = TDMT_DND_DROP_SNODE;
action.acceptableCode = TSDB_CODE_SNODE_NOT_DEPLOYED;
if (mndTransAppendUndoAction(pTrans, &action) != 0) {
taosMemoryFree(pReq);
return -1;
}
return 0;
}
static int32_t mndCreateSnode(SMnode *pMnode, SRpcMsg *pReq, SDnodeObj *pDnode, SMCreateSnodeReq *pCreate) {
int32_t code = -1;
SSnodeObj snodeObj = {0};
snodeObj.id = pDnode->id;
snodeObj.createdTime = taosGetTimestampMs();
snodeObj.updateTime = snodeObj.createdTime;
STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_CONFLICT_NOTHING, pReq, "create-snode");
if (pTrans == NULL) goto _OVER;
mInfo("trans:%d, used to create snode:%d", pTrans->id, pCreate->dnodeId);
if (mndSetCreateSnodeRedoLogs(pTrans, &snodeObj) != 0) goto _OVER;
if (mndSetCreateSnodeUndoLogs(pTrans, &snodeObj) != 0) goto _OVER;
if (mndSetCreateSnodeCommitLogs(pTrans, &snodeObj) != 0) goto _OVER;
if (mndSetCreateSnodeRedoActions(pTrans, pDnode, &snodeObj) != 0) goto _OVER;
if (mndSetCreateSnodeUndoActions(pTrans, pDnode, &snodeObj) != 0) goto _OVER;
if (mndTransPrepare(pMnode, pTrans) != 0) goto _OVER;
code = 0;
_OVER:
mndTransDrop(pTrans);
return code;
}
static int32_t mndProcessCreateSnodeReq(SRpcMsg *pReq) {
SMnode *pMnode = pReq->info.node;
int32_t code = -1;
SSnodeObj *pObj = NULL;
SDnodeObj *pDnode = NULL;
SMCreateSnodeReq createReq = {0};
if (tDeserializeSCreateDropMQSNodeReq(pReq->pCont, pReq->contLen, &createReq) != 0) {
terrno = TSDB_CODE_INVALID_MSG;
goto _OVER;
}
mInfo("snode:%d, start to create", createReq.dnodeId);
if (mndCheckOperPrivilege(pMnode, pReq->info.conn.user, MND_OPER_CREATE_SNODE) != 0) {
goto _OVER;
}
pObj = mndAcquireSnode(pMnode, createReq.dnodeId);
if (pObj != NULL) {
terrno = TSDB_CODE_MND_SNODE_ALREADY_EXIST;
goto _OVER;
} else if (terrno != TSDB_CODE_MND_SNODE_NOT_EXIST) {
goto _OVER;
}
pDnode = mndAcquireDnode(pMnode, createReq.dnodeId);
if (pDnode == NULL) {
terrno = TSDB_CODE_MND_DNODE_NOT_EXIST;
goto _OVER;
}
code = mndCreateSnode(pMnode, pReq, pDnode, &createReq);
if (code == 0) code = TSDB_CODE_ACTION_IN_PROGRESS;
_OVER:
if (code != 0 && code != TSDB_CODE_ACTION_IN_PROGRESS) {
mError("snode:%d, failed to create since %s", createReq.dnodeId, terrstr());
return -1;
}
mndReleaseSnode(pMnode, pObj);
mndReleaseDnode(pMnode, pDnode);
return code;
}
static int32_t mndSetDropSnodeRedoLogs(STrans *pTrans, SSnodeObj *pObj) {
SSdbRaw *pRedoRaw = mndSnodeActionEncode(pObj);
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 mndSetDropSnodeCommitLogs(STrans *pTrans, SSnodeObj *pObj) {
SSdbRaw *pCommitRaw = mndSnodeActionEncode(pObj);
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 mndSetDropSnodeRedoActions(STrans *pTrans, SDnodeObj *pDnode, SSnodeObj *pObj) {
SDDropSnodeReq dropReq = {0};
dropReq.dnodeId = pDnode->id;
int32_t contLen = tSerializeSCreateDropMQSNodeReq(NULL, 0, &dropReq);
void *pReq = taosMemoryMalloc(contLen);
if (pReq == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
return -1;
}
tSerializeSCreateDropMQSNodeReq(pReq, contLen, &dropReq);
STransAction action = {0};
action.epSet = mndGetDnodeEpset(pDnode);
action.pCont = pReq;
action.contLen = contLen;
action.msgType = TDMT_DND_DROP_SNODE;
action.acceptableCode = TSDB_CODE_SNODE_NOT_DEPLOYED;
if (mndTransAppendRedoAction(pTrans, &action) != 0) {
taosMemoryFree(pReq);
return -1;
}
return 0;
}
int32_t mndSetDropSnodeInfoToTrans(SMnode *pMnode, STrans *pTrans, SSnodeObj *pObj, bool force) {
if (pObj == NULL) return 0;
if (mndSetDropSnodeRedoLogs(pTrans, pObj) != 0) return -1;
if (mndSetDropSnodeCommitLogs(pTrans, pObj) != 0) return -1;
if (!force) {
if (mndSetDropSnodeRedoActions(pTrans, pObj->pDnode, pObj) != 0) return -1;
}
return 0;
}
static int32_t mndDropSnode(SMnode *pMnode, SRpcMsg *pReq, SSnodeObj *pObj) {
int32_t code = -1;
STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_CONFLICT_NOTHING, pReq, "drop-snode");
if (pTrans == NULL) goto _OVER;
mInfo("trans:%d, used to drop snode:%d", pTrans->id, pObj->id);
if (mndSetDropSnodeInfoToTrans(pMnode, pTrans, pObj, false) != 0) goto _OVER;
if (mndTransPrepare(pMnode, pTrans) != 0) goto _OVER;
code = 0;
_OVER:
mndTransDrop(pTrans);
return code;
}
static int32_t mndProcessDropSnodeReq(SRpcMsg *pReq) {
SMnode *pMnode = pReq->info.node;
int32_t code = -1;
SSnodeObj *pObj = NULL;
SMDropSnodeReq dropReq = {0};
if (tDeserializeSCreateDropMQSNodeReq(pReq->pCont, pReq->contLen, &dropReq) != 0) {
terrno = TSDB_CODE_INVALID_MSG;
goto _OVER;
}
mInfo("snode:%d, start to drop", dropReq.dnodeId);
if (mndCheckOperPrivilege(pMnode, pReq->info.conn.user, MND_OPER_DROP_SNODE) != 0) {
goto _OVER;
}
if (dropReq.dnodeId <= 0) {
terrno = TSDB_CODE_INVALID_MSG;
goto _OVER;
}
pObj = mndAcquireSnode(pMnode, dropReq.dnodeId);
if (pObj == NULL) {
goto _OVER;
}
// check deletable
code = mndDropSnode(pMnode, pReq, pObj);
if (code == 0) code = TSDB_CODE_ACTION_IN_PROGRESS;
_OVER:
if (code != 0 && code != TSDB_CODE_ACTION_IN_PROGRESS) {
mError("snode:%d, failed to drop since %s", dropReq.dnodeId, terrstr());
}
mndReleaseSnode(pMnode, pObj);
return code;
}
static int32_t mndRetrieveSnodes(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rows) {
SMnode *pMnode = pReq->info.node;
SSdb *pSdb = pMnode->pSdb;
int32_t numOfRows = 0;
int32_t cols = 0;
SSnodeObj *pObj = NULL;
while (numOfRows < rows) {
pShow->pIter = sdbFetch(pSdb, SDB_SNODE, pShow->pIter, (void **)&pObj);
if (pShow->pIter == NULL) break;
cols = 0;
SColumnInfoData *pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataSetVal(pColInfo, numOfRows, (const char *)&pObj->id, false);
char ep[TSDB_EP_LEN + VARSTR_HEADER_SIZE] = {0};
STR_WITH_MAXSIZE_TO_VARSTR(ep, pObj->pDnode->ep, pShow->pMeta->pSchemas[cols].bytes);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataSetVal(pColInfo, numOfRows, (const char *)ep, false);
pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
colDataSetVal(pColInfo, numOfRows, (const char *)&pObj->createdTime, false);
numOfRows++;
sdbRelease(pSdb, pObj);
}
pShow->numOfRows += numOfRows;
return numOfRows;
}
static void mndCancelGetNextSnode(SMnode *pMnode, void *pIter) {
SSdb *pSdb = pMnode->pSdb;
sdbCancelFetch(pSdb, pIter);
}