homework-jianmu/source/dnode/vnode/src/tsdb/tsdbRetention.c

104 lines
2.6 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/>.
*/
#include "tsdb.h"
static int32_t tsdbDoRetentionImpl(STsdb *pTsdb, int64_t now, int8_t try, int8_t *canDo) {
int32_t code = 0;
STsdbFSState *pState;
if (try) {
pState = pTsdb->fs->cState;
*canDo = 0;
} else {
pState = pTsdb->fs->nState;
}
for (int32_t iSet = 0; iSet < taosArrayGetSize(pState->aDFileSet); iSet++) {
SDFileSet *pDFileSet = (SDFileSet *)taosArrayGet(pState->aDFileSet, iSet);
int32_t expLevel = tsdbFidLevel(pDFileSet->fid, &pTsdb->keepCfg, now);
SDiskID did;
// check
if (expLevel == pDFileSet->diskId.id) continue;
// delete or move
if (expLevel < 0) {
if (try) {
*canDo = 1;
} else {
tsdbFSStateDeleteDFileSet(pState, pDFileSet->fid);
iSet--;
}
} else {
// alloc
if (tfsAllocDisk(pTsdb->pVnode->pTfs, expLevel, &did) < 0) {
code = terrno;
goto _exit;
}
if (did.level == pDFileSet->diskId.level) continue;
if (try) {
*canDo = 1;
} else {
// copy the file to new disk
SDFileSet nDFileSet = *pDFileSet;
nDFileSet.diskId = did;
tfsMkdirRecurAt(pTsdb->pVnode->pTfs, pTsdb->path, did);
code = tsdbDFileSetCopy(pTsdb, pDFileSet, &nDFileSet);
if (code) goto _exit;
code = tsdbFSStateUpsertDFileSet(pState, &nDFileSet);
if (code) goto _exit;
}
}
}
_exit:
return code;
}
int32_t tsdbDoRetention(STsdb *pTsdb, int64_t now) {
int32_t code = 0;
int8_t canDo;
// try
tsdbDoRetentionImpl(pTsdb, now, 1, &canDo);
if (!canDo) goto _exit;
// begin
code = tsdbFSBegin(pTsdb->fs);
if (code) goto _err;
// do retention
code = tsdbDoRetentionImpl(pTsdb, now, 0, NULL);
if (code) goto _err;
// commit
code = tsdbFSCommit(pTsdb->fs);
if (code) goto _err;
_exit:
return code;
_err:
tsdbError("vgId:%d tsdb do retention failed since %s", TD_VID(pTsdb->pVnode), tstrerror(code));
tsdbFSRollback(pTsdb->fs);
return code;
}