homework-jianmu/source/dnode/mgmt/main/dndExec.c

305 lines
8.9 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 "dndInt.h"
static bool dndRequireNode(SMgmtWrapper *pWrapper) {
bool required = false;
int32_t code = (*pWrapper->fp.requiredFp)(pWrapper, &required);
if (!required) {
dDebug("node:%s, does not require startup", pWrapper->name);
} else {
dDebug("node:%s, needs to be started", pWrapper->name);
}
return required;
}
int32_t dndOpenNode(SMgmtWrapper *pWrapper) {
if (taosMkDir(pWrapper->path) != 0) {
terrno = TAOS_SYSTEM_ERROR(errno);
dError("node:%s, failed to create dir:%s since %s", pWrapper->name, pWrapper->path, terrstr());
return -1;
}
if ((*pWrapper->fp.openFp)(pWrapper) != 0) {
dError("node:%s, failed to open since %s", pWrapper->name, terrstr());
return -1;
}
dDebug("node:%s, has been opened", pWrapper->name);
pWrapper->deployed = true;
return 0;
}
void dndCloseNode(SMgmtWrapper *pWrapper) {
dDebug("node:%s, mgmt start to close", pWrapper->name);
pWrapper->required = false;
taosWLockLatch(&pWrapper->latch);
if (pWrapper->deployed) {
(*pWrapper->fp.closeFp)(pWrapper);
pWrapper->deployed = false;
}
taosWUnLockLatch(&pWrapper->latch);
while (pWrapper->refCount > 0) {
taosMsleep(10);
}
if (pWrapper->pProc) {
taosProcCleanup(pWrapper->pProc);
pWrapper->pProc = NULL;
}
dDebug("node:%s, mgmt has been closed", pWrapper->name);
}
static int32_t dndNewProc(SMgmtWrapper *pWrapper, ENodeType n) {
char tstr[8] = {0};
char *args[6] = {0};
snprintf(tstr, sizeof(tstr), "%d", n);
args[1] = "-c";
args[2] = configDir;
args[3] = "-n";
args[4] = tstr;
args[5] = NULL;
int32_t pid = taosNewProc(args);
if (pid <= 0) {
terrno = TAOS_SYSTEM_ERROR(errno);
dError("node:%s, failed to exec in new process since %s", pWrapper->name, terrstr());
return -1;
}
pWrapper->procId = pid;
dInfo("node:%s, continue running in new process:%d", pWrapper->name, pid);
return 0;
}
static void dndProcessProcHandle(void *handle) {
SRpcMsg rpcMsg = {.handle = handle, .code = TSDB_CODE_DND_OFFLINE};
rpcSendResponse(&rpcMsg);
}
static int32_t dndRunInSingleProcess(SDnode *pDnode) {
dInfo("dnode run in single process");
for (ENodeType n = DNODE; n < NODE_MAX; ++n) {
SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
pWrapper->required = dndRequireNode(pWrapper);
if (!pWrapper->required) continue;
if (dndOpenNode(pWrapper) != 0) {
dError("node:%s, failed to start since %s", pWrapper->name, terrstr());
return -1;
}
}
dndSetStatus(pDnode, DND_STAT_RUNNING);
for (ENodeType n = 0; n < NODE_MAX; ++n) {
SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
if (!pWrapper->required) continue;
if (pWrapper->fp.startFp == NULL) continue;
if ((*pWrapper->fp.startFp)(pWrapper) != 0) {
dError("node:%s, failed to start since %s", pWrapper->name, terrstr());
return -1;
}
}
dInfo("TDengine initialized successfully");
dndReportStartup(pDnode, "TDengine", "initialized successfully");
while (1) {
if (pDnode->event == DND_EVENT_STOP) {
dInfo("dnode is about to stop");
dndSetStatus(pDnode, DND_STAT_STOPPED);
break;
}
taosMsleep(100);
}
return 0;
}
static int32_t dndRunInParentProcess(SDnode *pDnode) {
dInfo("dnode run in parent process");
SMgmtWrapper *pDWrapper = &pDnode->wrappers[DNODE];
if (dndOpenNode(pDWrapper) != 0) {
dError("node:%s, failed to start since %s", pDWrapper->name, terrstr());
return -1;
}
for (ENodeType n = DNODE + 1; n < NODE_MAX; ++n) {
SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
pWrapper->required = dndRequireNode(pWrapper);
if (!pWrapper->required) continue;
int32_t shmsize = 1024 * 1024 * 2; // size will be a configuration item
if (taosCreateShm(&pWrapper->shm, n, shmsize) != 0) {
terrno = TAOS_SYSTEM_ERROR(terrno);
dError("node:%s, failed to create shm size:%d since %s", pWrapper->name, shmsize, terrstr());
return -1;
}
dInfo("node:%s, shm:%d is created, size:%d", pWrapper->name, pWrapper->shm.id, shmsize);
SProcCfg cfg = dndGenProcCfg(pWrapper);
cfg.isChild = false;
pWrapper->procType = PROC_PARENT;
pWrapper->pProc = taosProcInit(&cfg);
if (pWrapper->pProc == NULL) {
dError("node:%s, failed to create proc since %s", pWrapper->name, terrstr());
return -1;
}
}
if (dndWriteShmFile(pDnode) != 0) {
dError("failed to write runtime file since %s", terrstr());
return -1;
}
for (ENodeType n = DNODE + 1; n < NODE_MAX; ++n) {
SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
if (!pWrapper->required) continue;
if (pDnode->ntype == NODE_MAX) {
dInfo("node:%s, should be started manually", pWrapper->name);
} else {
if (dndNewProc(pWrapper, n) != 0) {
return -1;
}
}
if (taosProcRun(pWrapper->pProc) != 0) {
dError("node:%s, failed to run proc since %s", pWrapper->name, terrstr());
return -1;
}
}
dndSetStatus(pDnode, DND_STAT_RUNNING);
if ((*pDWrapper->fp.startFp)(pDWrapper) != 0) {
dError("node:%s, failed to start since %s", pDWrapper->name, terrstr());
return -1;
}
dInfo("TDengine initialized successfully");
dndReportStartup(pDnode, "TDengine", "initialized successfully");
while (1) {
if (pDnode->event == DND_EVENT_STOP) {
dInfo("dnode is about to stop");
dndSetStatus(pDnode, DND_STAT_STOPPED);
for (ENodeType n = DNODE + 1; n < NODE_MAX; ++n) {
SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
if (!pWrapper->required) continue;
if (pDnode->ntype == NODE_MAX) continue;
if (pWrapper->procId > 0 && taosProcExist(pWrapper->procId)) {
dInfo("node:%s, send kill signal to the child process:%d", pWrapper->name, pWrapper->procId);
taosKillProc(pWrapper->procId);
dInfo("node:%s, wait for child process:%d to stop", pWrapper->name, pWrapper->procId);
taosWaitProc(pWrapper->procId);
dInfo("node:%s, child process:%d is stopped", pWrapper->name, pWrapper->procId);
}
}
break;
} else {
for (ENodeType n = DNODE + 1; n < NODE_MAX; ++n) {
SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
if (!pWrapper->required) continue;
if (pDnode->ntype == NODE_MAX) continue;
if (pWrapper->procId <= 0 || !taosProcExist(pWrapper->procId)) {
dInfo("node:%s, process:%d is killed and needs to be restarted", pWrapper->name, pWrapper->procId);
taosProcCloseHandles(pWrapper->pProc, dndProcessProcHandle);
dndNewProc(pWrapper, n);
}
}
}
taosMsleep(100);
}
return 0;
}
static int32_t dndRunInChildProcess(SDnode *pDnode) {
SMgmtWrapper *pWrapper = &pDnode->wrappers[pDnode->ntype];
dInfo("%s run in child process", pWrapper->name);
pWrapper->required = dndRequireNode(pWrapper);
if (!pWrapper->required) {
dError("%s does not require startup", pWrapper->name);
return -1;
}
SMsgCb msgCb = dndCreateMsgcb(pWrapper);
tmsgSetDefaultMsgCb(&msgCb);
pWrapper->procType = PROC_CHILD;
if (dndOpenNode(pWrapper) != 0) {
dError("node:%s, failed to start since %s", pWrapper->name, terrstr());
return -1;
}
SProcCfg cfg = dndGenProcCfg(pWrapper);
cfg.isChild = true;
pWrapper->pProc = taosProcInit(&cfg);
if (pWrapper->pProc == NULL) {
dError("node:%s, failed to create proc since %s", pWrapper->name, terrstr());
return -1;
}
if (pWrapper->fp.startFp != NULL) {
if ((*pWrapper->fp.startFp)(pWrapper) != 0) {
dError("node:%s, failed to start since %s", pWrapper->name, terrstr());
return -1;
}
}
dndSetStatus(pDnode, DND_STAT_RUNNING);
if (taosProcRun(pWrapper->pProc) != 0) {
dError("node:%s, failed to run proc since %s", pWrapper->name, terrstr());
return -1;
}
dInfo("TDengine initialized successfully");
dndReportStartup(pDnode, "TDengine", "initialized successfully");
while (1) {
if (pDnode->event == DND_EVENT_STOP) {
dInfo("%s is about to stop", pWrapper->name);
dndSetStatus(pDnode, DND_STAT_STOPPED);
break;
}
taosMsleep(100);
}
return 0;
}
int32_t dndRun(SDnode *pDnode) {
if (!tsMultiProcess) {
return dndRunInSingleProcess(pDnode);
} else if (pDnode->ntype == DNODE || pDnode->ntype == NODE_MAX) {
return dndRunInParentProcess(pDnode);
} else {
return dndRunInChildProcess(pDnode);
}
return 0;
}