mirror of
https://github.com/taosdata/TDengine
synced 2026-05-24 10:09:01 +00:00
335 lines
11 KiB
C
335 lines
11 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define _DEFAULT_SOURCE
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#include "mndShow.h"
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static int32_t mndProcessShowMsg(SMnodeMsg *pMnodeMsg);
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static int32_t mndProcessRetrieveMsg( SMnodeMsg *pMsg);
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static bool mndCheckRetrieveFinished(SShowObj *pShow);
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static int32_t mndAcquireShowObj(SMnode *pMnode, SShowObj *pShow);
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static void mndReleaseShowObj(SShowObj *pShow, bool forceRemove);
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static int32_t mndPutShowObj(SMnode *pMnode, SShowObj *pShow);
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static void mndFreeShowObj(void *ppShow);
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static char *mndShowStr(int32_t showType);
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int32_t mndInitShow(SMnode *pMnode) {
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SShowMgmt *pMgmt = &pMnode->showMgmt;
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pMgmt->cache = taosCacheInit(TSDB_CACHE_PTR_KEY, 5, true, mndFreeShowObj, "show");
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if (pMgmt->cache == NULL) {
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terrno = TSDB_CODE_OUT_OF_MEMORY;
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mError("failed to alloc show cache since %s", terrstr());
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return -1;
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}
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mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_SHOW, mndProcessShowMsg);
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mndSetMsgHandle(pMnode, TSDB_MSG_TYPE_SHOW_RETRIEVE, mndProcessRetrieveMsg);
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return 0;
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}
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void mndCleanupShow(SMnode *pMnode) {
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SShowMgmt *pMgmt = &pMnode->showMgmt;
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if (pMgmt->cache != NULL) {
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taosCacheCleanup(pMgmt->cache);
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pMgmt->cache = NULL;
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}
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}
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static int32_t mndAcquireShowObj(SMnode *pMnode, SShowObj *pShow) {
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TSDB_CACHE_PTR_TYPE handleVal = (TSDB_CACHE_PTR_TYPE)pShow;
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SShowMgmt *pMgmt = &pMnode->showMgmt;
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SShowObj **ppShow = taosCacheAcquireByKey(pMgmt->cache, &handleVal, sizeof(TSDB_CACHE_PTR_TYPE));
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if (ppShow) {
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mTrace("show:%d, data:%p acquired from cache", pShow->id, ppShow);
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return 0;
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}
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return -1;
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}
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static void mndReleaseShowObj(SShowObj *pShow, bool forceRemove) {
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SMnode *pMnode = pShow->pMnode;
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SShowMgmt *pMgmt = &pMnode->showMgmt;
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SShowObj **ppShow = (SShowObj **)pShow->ppShow;
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taosCacheRelease(pMgmt->cache, (void **)(&ppShow), forceRemove);
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mDebug("show:%d, data:%p released from cache, force:%d", pShow->id, ppShow, forceRemove);
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}
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static int32_t mndPutShowObj(SMnode *pMnode, SShowObj *pShow) {
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SShowMgmt *pMgmt = &pMnode->showMgmt;
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int32_t lifeSpan = pMnode->shellActivityTimer * 6 * 1000;
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TSDB_CACHE_PTR_TYPE val = (TSDB_CACHE_PTR_TYPE)pShow;
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pShow->id = atomic_add_fetch_32(&pMgmt->showId, 1);
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SShowObj **ppShow =
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taosCachePut(pMgmt->cache, &val, sizeof(TSDB_CACHE_PTR_TYPE), &pShow, sizeof(TSDB_CACHE_PTR_TYPE), lifeSpan);
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if (ppShow == NULL) {
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terrno = TSDB_CODE_OUT_OF_MEMORY;
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mError("show:%d, failed to put into cache", pShow->id);
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return -1;
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}
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mTrace("show:%d, data:%p put into cache", pShow->id, ppShow);
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return 0;
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}
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static void mndFreeShowObj(void *ppShow) {
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SShowObj *pShow = *(SShowObj **)ppShow;
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SMnode *pMnode = pShow->pMnode;
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SShowMgmt *pMgmt = &pMnode->showMgmt;
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ShowFreeIterFp freeFp = pMgmt->freeIterFps[pShow->type];
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if (freeFp != NULL) {
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if (pShow->pVgIter != NULL) {
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// only used in 'show vnodes "ep"'
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(*freeFp)(pMnode, pShow->pVgIter);
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}
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if (pShow->pIter != NULL) {
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(*freeFp)(pMnode, pShow->pIter);
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}
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}
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mDebug("show:%d, data:%p destroyed", pShow->id, ppShow);
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tfree(pShow);
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}
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static int32_t mndProcessShowMsg(SMnodeMsg *pMnodeMsg) {
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SMnode *pMnode = pMnodeMsg->pMnode;
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SShowMgmt *pMgmt = &pMnode->showMgmt;
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SShowMsg *pMsg = pMnodeMsg->rpcMsg.pCont;
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int8_t type = pMsg->type;
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uint16_t payloadLen = htonl(pMsg->payloadLen);
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if (type <= TSDB_MGMT_TABLE_START || type >= TSDB_MGMT_TABLE_MAX) {
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terrno = TSDB_CODE_MND_INVALID_MSG_TYPE;
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mError("failed to process show msg since %s", terrstr());
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return -1;
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}
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ShowMetaFp metaFp = pMgmt->metaFps[type];
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if (metaFp == NULL) {
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terrno = TSDB_CODE_MND_INVALID_MSG_TYPE;
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mError("failed to process show-meta msg:%s since no message handle", mndShowStr(type));
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return -1;
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}
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int32_t size = sizeof(SShowObj) + payloadLen;
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SShowObj *pShow = calloc(1, size);
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if (pShow != NULL) {
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pShow->pMnode = pMnode;
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pShow->type = type;
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pShow->payloadLen = payloadLen;
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memcpy(pShow->db, pMsg->db, TSDB_FULL_DB_NAME_LEN);
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memcpy(pShow->payload, pMsg->payload, payloadLen);
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} else {
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terrno = TSDB_CODE_OUT_OF_MEMORY;
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mError("failed to process show-meta msg:%s since %s", mndShowStr(type), terrstr());
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return -1;
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}
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if (mndPutShowObj(pMnode, pShow) == 0) {
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mError("failed to process show-meta msg:%s since %s", mndShowStr(type), terrstr());
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free(pShow);
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return -1;
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}
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size = sizeof(SShowRsp) + sizeof(SSchema) * TSDB_MAX_COLUMNS + TSDB_EXTRA_PAYLOAD_SIZE;
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SShowRsp *pRsp = rpcMallocCont(size);
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if (pRsp == NULL) {
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mndReleaseShowObj(pShow, true);
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terrno = TSDB_CODE_OUT_OF_MEMORY;
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mError("show:%d, failed to process show-meta msg:%s since malloc rsp error", pShow->id, mndShowStr(type));
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return -1;
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}
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pRsp->qhandle = htobe64((uint64_t)pShow);
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int32_t code = (*metaFp)(pMnodeMsg,pShow, &pRsp->tableMeta);
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mDebug("show:%d, type:%s, get meta finished, numOfRows:%d cols:%d result:%s", pShow->id, mndShowStr(type),
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pShow->numOfRows, pShow->numOfColumns, tstrerror(code));
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if (code == TSDB_CODE_SUCCESS) {
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pMnodeMsg->contLen = sizeof(SShowRsp) + sizeof(SSchema) * pShow->numOfColumns;
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pMnodeMsg->pCont = pRsp;
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mndReleaseShowObj(pShow, false);
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return TSDB_CODE_SUCCESS;
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} else {
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rpcFreeCont(pRsp);
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mndReleaseShowObj(pShow, true);
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return code;
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}
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}
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static int32_t mndProcessRetrieveMsg(SMnodeMsg *pMnodeMsg) {
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SMnode *pMnode = pMnodeMsg->pMnode;
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SShowMgmt *pMgmt = &pMnode->showMgmt;
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int32_t rowsToRead = 0;
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int32_t size = 0;
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int32_t rowsRead = 0;
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SRetrieveTableMsg *pRetrieve = pMnodeMsg->rpcMsg.pCont;
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pRetrieve->qhandle = htobe64(pRetrieve->qhandle);
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SShowObj *pShow = (SShowObj *)pRetrieve->qhandle;
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/*
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* in case of server restart, apps may hold qhandle created by server before
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* restart, which is actually invalid, therefore, signature check is required.
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*/
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if (mndAcquireShowObj(pMnode, pShow) != 0) {
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terrno = TSDB_CODE_MND_INVALID_SHOWOBJ;
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mError("failed to process show-retrieve msg:%p since %s", pShow, terrstr());
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return -1;
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}
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ShowRetrieveFp retrieveFp = pMgmt->retrieveFps[pShow->type];
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if (retrieveFp == NULL) {
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mndReleaseShowObj(pShow, false);
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terrno = TSDB_CODE_MSG_NOT_PROCESSED;
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mError("show:%d, failed to retrieve data since %s", pShow->id, terrstr());
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return -1;
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}
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mDebug("show:%d, type:%s, start retrieve data, numOfReads:%d numOfRows:%d", pShow->id, mndShowStr(pShow->type),
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pShow->numOfReads, pShow->numOfRows);
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if (mndCheckRetrieveFinished(pShow)) {
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mDebug("show:%d, read finished, numOfReads:%d numOfRows:%d", pShow->id, pShow->numOfReads, pShow->numOfRows);
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pShow->numOfReads = pShow->numOfRows;
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}
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if ((pRetrieve->free & TSDB_QUERY_TYPE_FREE_RESOURCE) != TSDB_QUERY_TYPE_FREE_RESOURCE) {
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rowsToRead = pShow->numOfRows - pShow->numOfReads;
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}
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/* return no more than 100 tables in one round trip */
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if (rowsToRead > 100) rowsToRead = 100;
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/*
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* the actual number of table may be larger than the value of pShow->numOfRows, if a query is
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* issued during a continuous create table operation. Therefore, rowToRead may be less than 0.
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*/
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if (rowsToRead < 0) rowsToRead = 0;
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size = pShow->rowSize * rowsToRead;
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size += 100;
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SRetrieveTableRsp *pRsp = rpcMallocCont(size);
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if (pRsp == NULL) {
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mndReleaseShowObj(pShow, false);
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terrno = TSDB_CODE_OUT_OF_MEMORY;
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mError("show:%d, failed to retrieve data since %s", pShow->id, terrstr());
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return -1;
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}
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// if free flag is set, client wants to clean the resources
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if ((pRetrieve->free & TSDB_QUERY_TYPE_FREE_RESOURCE) != TSDB_QUERY_TYPE_FREE_RESOURCE) {
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rowsRead = (*retrieveFp)(pMnodeMsg, pShow, pRsp->data, rowsToRead);
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}
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mDebug("show:%d, stop retrieve data, rowsRead:%d rowsToRead:%d", pShow->id, rowsRead, rowsToRead);
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pRsp->numOfRows = htonl(rowsRead);
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pRsp->precision = (int16_t)htonl(TSDB_TIME_PRECISION_MILLI); // millisecond time precision
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pMnodeMsg->pCont = pRsp;
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pMnodeMsg->contLen = size;
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if (rowsToRead == 0 || (rowsRead == rowsToRead && pShow->numOfRows == pShow->numOfReads)) {
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pRsp->completed = 1;
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mDebug("%p, retrieve completed", pShow);
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mndReleaseShowObj(pShow, true);
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} else {
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mDebug("%p, retrieve not completed yet", pShow);
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mndReleaseShowObj(pShow, false);
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}
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return TSDB_CODE_SUCCESS;
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}
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static char *mndShowStr(int32_t showType) {
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switch (showType) {
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case TSDB_MGMT_TABLE_ACCT:
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return "show accounts";
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case TSDB_MGMT_TABLE_USER:
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return "show users";
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case TSDB_MGMT_TABLE_DB:
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return "show databases";
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case TSDB_MGMT_TABLE_TABLE:
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return "show tables";
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case TSDB_MGMT_TABLE_DNODE:
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return "show dnodes";
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case TSDB_MGMT_TABLE_MNODE:
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return "show mnodes";
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case TSDB_MGMT_TABLE_VGROUP:
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return "show vgroups";
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case TSDB_MGMT_TABLE_METRIC:
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return "show stables";
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case TSDB_MGMT_TABLE_MODULE:
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return "show modules";
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case TSDB_MGMT_TABLE_QUERIES:
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return "show queries";
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case TSDB_MGMT_TABLE_STREAMS:
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return "show streams";
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case TSDB_MGMT_TABLE_VARIABLES:
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return "show configs";
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case TSDB_MGMT_TABLE_CONNS:
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return "show connections";
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case TSDB_MGMT_TABLE_SCORES:
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return "show scores";
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case TSDB_MGMT_TABLE_GRANTS:
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return "show grants";
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case TSDB_MGMT_TABLE_VNODES:
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return "show vnodes";
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case TSDB_MGMT_TABLE_CLUSTER:
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return "show clusters";
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case TSDB_MGMT_TABLE_STREAMTABLES:
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return "show streamtables";
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case TSDB_MGMT_TABLE_TP:
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return "show topics";
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default:
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return "undefined";
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}
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}
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static bool mndCheckRetrieveFinished(SShowObj *pShow) {
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if (pShow->pIter == NULL && pShow->numOfReads != 0) {
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return true;
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}
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return false;
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}
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void mnodeVacuumResult(char *data, int32_t numOfCols, int32_t rows, int32_t capacity, SShowObj *pShow) {
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if (rows < capacity) {
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for (int32_t i = 0; i < numOfCols; ++i) {
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memmove(data + pShow->offset[i] * rows, data + pShow->offset[i] * capacity, pShow->bytes[i] * rows);
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}
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}
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}
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void mndAddShowMetaHandle(SMnode *pMnode, EShowType showType, ShowMetaFp fp) {
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SShowMgmt *pMgmt = &pMnode->showMgmt;
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pMgmt->metaFps[showType] = fp;
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}
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void mndAddShowRetrieveHandle(SMnode *pMnode, EShowType showType, ShowRetrieveFp fp) {
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SShowMgmt *pMgmt = &pMnode->showMgmt;
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pMgmt->retrieveFps[showType] = fp;
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}
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void mndAddShowFreeIterHandle(SMnode *pMnode, EShowType showType, ShowFreeIterFp fp) {
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SShowMgmt *pMgmt = &pMnode->showMgmt;
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pMgmt->freeIterFps[showType] = fp;
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}
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