378 lines
10 KiB
C
378 lines
10 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 "dndQnode.h"
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// #include "dmInt.h"
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// #include "dndTransport.h"
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// #include "dndWorker.h"
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#if 0
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static void dndProcessQnodeQueue(SDnode *pDnode, SRpcMsg *pMsg);
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static SQnode *dndAcquireQnode(SDnode *pDnode) {
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SQnodeMgmt *pMgmt = &pDnode->qmgmt;
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SQnode *pQnode = NULL;
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int32_t refCount = 0;
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taosRLockLatch(&pMgmt->latch);
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if (pMgmt->deployed && !pMgmt->dropped && pMgmt->pQnode != NULL) {
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refCount = atomic_add_fetch_32(&pMgmt->refCount, 1);
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pQnode = pMgmt->pQnode;
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} else {
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terrno = TSDB_CODE_DND_QNODE_NOT_DEPLOYED;
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}
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taosRUnLockLatch(&pMgmt->latch);
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if (pQnode != NULL) {
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dTrace("acquire qnode, refCount:%d", refCount);
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}
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return pQnode;
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}
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static void dndReleaseQnode(SDnode *pDnode, SQnode *pQnode) {
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if (pQnode == NULL) return;
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SQnodeMgmt *pMgmt = &pDnode->qmgmt;
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taosRLockLatch(&pMgmt->latch);
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int32_t refCount = atomic_sub_fetch_32(&pMgmt->refCount, 1);
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taosRUnLockLatch(&pMgmt->latch);
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dTrace("release qnode, refCount:%d", refCount);
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}
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static int32_t dndReadQnodeFile(SDnode *pDnode) {
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SQnodeMgmt *pMgmt = &pDnode->qmgmt;
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int32_t code = TSDB_CODE_DND_QNODE_READ_FILE_ERROR;
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int32_t len = 0;
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int32_t maxLen = 1024;
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char *content = calloc(1, maxLen + 1);
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cJSON *root = NULL;
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char file[PATH_MAX + 20];
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snprintf(file, PATH_MAX + 20, "%s/qnode.json", pDnode->dir.dnode);
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// FILE *fp = fopen(file, "r");
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TdFilePtr pFile = taosOpenFile(file, TD_FILE_READ);
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if (pFile == NULL) {
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dDebug("file %s not exist", file);
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code = 0;
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goto PRASE_QNODE_OVER;
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}
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len = (int32_t)taosReadFile(pFile, content, maxLen);
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if (len <= 0) {
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dError("failed to read %s since content is null", file);
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goto PRASE_QNODE_OVER;
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}
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content[len] = 0;
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root = cJSON_Parse(content);
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if (root == NULL) {
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dError("failed to read %s since invalid json format", file);
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goto PRASE_QNODE_OVER;
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}
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cJSON *deployed = cJSON_GetObjectItem(root, "deployed");
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if (!deployed || deployed->type != cJSON_Number) {
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dError("failed to read %s since deployed not found", file);
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goto PRASE_QNODE_OVER;
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}
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pMgmt->deployed = deployed->valueint;
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cJSON *dropped = cJSON_GetObjectItem(root, "dropped");
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if (!dropped || dropped->type != cJSON_Number) {
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dError("failed to read %s since dropped not found", file);
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goto PRASE_QNODE_OVER;
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}
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pMgmt->dropped = dropped->valueint;
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code = 0;
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dDebug("succcessed to read file %s, deployed:%d dropped:%d", file, pMgmt->deployed, pMgmt->dropped);
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PRASE_QNODE_OVER:
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if (content != NULL) free(content);
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if (root != NULL) cJSON_Delete(root);
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if (pFile != NULL) taosCloseFile(&pFile);
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terrno = code;
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return code;
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}
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static int32_t dndWriteQnodeFile(SDnode *pDnode) {
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SQnodeMgmt *pMgmt = &pDnode->qmgmt;
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char file[PATH_MAX + 20];
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snprintf(file, PATH_MAX + 20, "%s/qnode.json", pDnode->dir.dnode);
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// FILE *fp = fopen(file, "w");
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TdFilePtr pFile = taosOpenFile(file, TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_TRUNC);
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if (pFile == NULL) {
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terrno = TSDB_CODE_DND_QNODE_WRITE_FILE_ERROR;
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dError("failed to write %s since %s", file, terrstr());
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return -1;
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}
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int32_t len = 0;
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int32_t maxLen = 1024;
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char *content = calloc(1, maxLen + 1);
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len += snprintf(content + len, maxLen - len, "{\n");
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len += snprintf(content + len, maxLen - len, " \"deployed\": %d,\n", pMgmt->deployed);
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len += snprintf(content + len, maxLen - len, " \"dropped\": %d\n", pMgmt->dropped);
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len += snprintf(content + len, maxLen - len, "}\n");
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taosWriteFile(pFile, content, len);
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taosFsyncFile(pFile);
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taosCloseFile(&pFile);
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free(content);
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char realfile[PATH_MAX + 20];
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snprintf(realfile, PATH_MAX + 20, "%s/qnode.json", pDnode->dir.dnode);
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if (taosRenameFile(file, realfile) != 0) {
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terrno = TSDB_CODE_DND_QNODE_WRITE_FILE_ERROR;
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dError("failed to rename %s since %s", file, terrstr());
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return -1;
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}
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dInfo("successed to write %s, deployed:%d dropped:%d", realfile, pMgmt->deployed, pMgmt->dropped);
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return 0;
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}
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static int32_t dndStartQnodeWorker(SDnode *pDnode) {
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SQnodeMgmt *pMgmt = &pDnode->qmgmt;
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if (dndInitWorker(pDnode, &pMgmt->queryWorker, DND_WORKER_SINGLE, "qnode-query", 0, 1, dndProcessQnodeQueue) != 0) {
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dError("failed to start qnode query worker since %s", terrstr());
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return -1;
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}
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if (dndInitWorker(pDnode, &pMgmt->fetchWorker, DND_WORKER_SINGLE, "qnode-fetch", 0, 1, dndProcessQnodeQueue) != 0) {
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dError("failed to start qnode fetch worker since %s", terrstr());
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return -1;
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}
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return 0;
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}
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static void dndStopQnodeWorker(SDnode *pDnode) {
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SQnodeMgmt *pMgmt = &pDnode->qmgmt;
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taosWLockLatch(&pMgmt->latch);
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pMgmt->deployed = 0;
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taosWUnLockLatch(&pMgmt->latch);
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while (pMgmt->refCount > 0) {
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taosMsleep(10);
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}
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dndCleanupWorker(&pMgmt->queryWorker);
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dndCleanupWorker(&pMgmt->fetchWorker);
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}
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static void dndBuildQnodeOption(SDnode *pDnode, SQnodeOpt *pOption) {
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pOption->pDnode = pDnode;
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pOption->sendReqFp = dndSendReqToDnode;
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pOption->sendReqToMnodeFp = dndSendReqToMnode;
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pOption->sendRedirectRspFp = dmSendRedirectRsp;
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pOption->dnodeId = dmGetDnodeId(pDnode);
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pOption->clusterId = dmGetClusterId(pDnode);
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pOption->sver = tsVersion;
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}
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static int32_t dndOpenQnode(SDnode *pDnode) {
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SQnodeMgmt *pMgmt = &pDnode->qmgmt;
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SQnode *pQnode = dndAcquireQnode(pDnode);
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if (pQnode != NULL) {
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dndReleaseQnode(pDnode, pQnode);
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terrno = TSDB_CODE_DND_QNODE_ALREADY_DEPLOYED;
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dError("failed to create qnode since %s", terrstr());
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return -1;
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}
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SQnodeOpt option = {0};
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dndBuildQnodeOption(pDnode, &option);
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pQnode = qndOpen(&option);
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if (pQnode == NULL) {
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dError("failed to open qnode since %s", terrstr());
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return -1;
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}
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if (dndStartQnodeWorker(pDnode) != 0) {
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dError("failed to start qnode worker since %s", terrstr());
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qndClose(pQnode);
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return -1;
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}
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pMgmt->deployed = 1;
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if (dndWriteQnodeFile(pDnode) != 0) {
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pMgmt->deployed = 0;
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dError("failed to write qnode file since %s", terrstr());
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dndStopQnodeWorker(pDnode);
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qndClose(pQnode);
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return -1;
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}
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taosWLockLatch(&pMgmt->latch);
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pMgmt->pQnode = pQnode;
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taosWUnLockLatch(&pMgmt->latch);
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dInfo("qnode open successfully");
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return 0;
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}
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static int32_t dndDropQnode(SDnode *pDnode) {
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SQnodeMgmt *pMgmt = &pDnode->qmgmt;
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SQnode *pQnode = dndAcquireQnode(pDnode);
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if (pQnode == NULL) {
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dError("failed to drop qnode since %s", terrstr());
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return -1;
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}
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taosRLockLatch(&pMgmt->latch);
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pMgmt->dropped = 1;
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taosRUnLockLatch(&pMgmt->latch);
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if (dndWriteQnodeFile(pDnode) != 0) {
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taosRLockLatch(&pMgmt->latch);
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pMgmt->dropped = 0;
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taosRUnLockLatch(&pMgmt->latch);
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dndReleaseQnode(pDnode, pQnode);
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dError("failed to drop qnode since %s", terrstr());
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return -1;
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}
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dndReleaseQnode(pDnode, pQnode);
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dndStopQnodeWorker(pDnode);
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pMgmt->deployed = 0;
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dndWriteQnodeFile(pDnode);
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qndClose(pQnode);
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pMgmt->pQnode = NULL;
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return 0;
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}
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int32_t qmProcessCreateReq(SDnode *pDnode, SRpcMsg *pReq) {
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SDCreateQnodeReq createReq = {0};
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if (tDeserializeSMCreateDropQSBNodeReq(pReq->pCont, pReq->contLen, &createReq) != 0) {
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terrno = TSDB_CODE_INVALID_MSG;
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return -1;
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}
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if (createReq.dnodeId != dmGetDnodeId(pDnode)) {
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terrno = TSDB_CODE_DND_QNODE_INVALID_OPTION;
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dError("failed to create qnode since %s", terrstr());
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return -1;
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} else {
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return dndOpenQnode(pDnode);
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}
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}
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int32_t qmProcessDropReq(SDnode *pDnode, SRpcMsg *pReq) {
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SDDropQnodeReq dropReq = {0};
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if (tDeserializeSMCreateDropQSBNodeReq(pReq->pCont, pReq->contLen, &dropReq) != 0) {
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terrno = TSDB_CODE_INVALID_MSG;
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return -1;
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}
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if (dropReq.dnodeId != dmGetDnodeId(pDnode)) {
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terrno = TSDB_CODE_DND_QNODE_INVALID_OPTION;
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dError("failed to drop qnode since %s", terrstr());
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return -1;
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} else {
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return dndDropQnode(pDnode);
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}
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}
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static void dndProcessQnodeQueue(SDnode *pDnode, SRpcMsg *pMsg) {
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SQnodeMgmt *pMgmt = &pDnode->qmgmt;
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SRpcMsg *pRsp = NULL;
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int32_t code = TSDB_CODE_DND_QNODE_NOT_DEPLOYED;
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SQnode *pQnode = dndAcquireQnode(pDnode);
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if (pQnode != NULL) {
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code = qndProcessMsg(pQnode, pMsg, &pRsp);
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}
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dndReleaseQnode(pDnode, pQnode);
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if (pMsg->msgType & 1u) {
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if (pRsp != NULL) {
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pRsp->ahandle = pMsg->ahandle;
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rpcSendResponse(pRsp);
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free(pRsp);
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} else {
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if (code != 0) code = terrno;
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SRpcMsg rpcRsp = {.handle = pMsg->handle, .ahandle = pMsg->ahandle, .code = code};
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rpcSendResponse(&rpcRsp);
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}
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}
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rpcFreeCont(pMsg->pCont);
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taosFreeQitem(pMsg);
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}
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static void dndWriteQnodeMsgToWorker(SDnode *pDnode, SDnodeWorker *pWorker, SRpcMsg *pMsg) {
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int32_t code = TSDB_CODE_DND_QNODE_NOT_DEPLOYED;
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SQnode *pQnode = dndAcquireQnode(pDnode);
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if (pQnode != NULL) {
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code = dndWriteMsgToWorker(pWorker, pMsg, sizeof(SRpcMsg));
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}
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dndReleaseQnode(pDnode, pQnode);
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if (code != 0) {
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if (pMsg->msgType & 1u) {
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SRpcMsg rsp = {.handle = pMsg->handle, .ahandle = pMsg->ahandle, .code = code};
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rpcSendResponse(&rsp);
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}
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rpcFreeCont(pMsg->pCont);
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}
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}
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void dndProcessQnodeQueryMsg(SDnode *pDnode, SRpcMsg *pMsg, SEpSet *pEpSet) {
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dndWriteQnodeMsgToWorker(pDnode, &pDnode->qmgmt.queryWorker, pMsg);
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}
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void dndProcessQnodeFetchMsg(SDnode *pDnode, SRpcMsg *pMsg, SEpSet *pEpSet) {
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dndWriteQnodeMsgToWorker(pDnode, &pDnode->qmgmt.queryWorker, pMsg);
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}
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int32_t dndInitQnode(SDnode *pDnode) {
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SQnodeMgmt *pMgmt = &pDnode->qmgmt;
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taosInitRWLatch(&pMgmt->latch);
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if (dndReadQnodeFile(pDnode) != 0) {
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return -1;
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}
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if (pMgmt->dropped) return 0;
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if (!pMgmt->deployed) return 0;
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return dndOpenQnode(pDnode);
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}
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void dndCleanupQnode(SDnode *pDnode) {
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SQnodeMgmt *pMgmt = &pDnode->qmgmt;
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if (pMgmt->pQnode) {
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dndStopQnodeWorker(pDnode);
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qndClose(pMgmt->pQnode);
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pMgmt->pQnode = NULL;
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}
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}
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#endif
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