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Merge pull request #14128 from taosdata/feature/wal 

feat(wal): provide is empty api
This commit is contained in:
Liu Jicong 2022-06-22 20:12:51 +08:00 committed by GitHub
parent df1967de4b 04f11e2646
commit e078c739e4
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 16 additions and 9 deletions
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8
include/libs/wal/wal.h
View File

@ -195,7 +195,6 @@ void walCloseReadHandle(SWalReadHandle *);
int32_t walReadWithHandle(SWalReadHandle *pRead, int64_t ver);
// only for tq usage
// int32_t walReadWithHandle_s(SWalReadHandle *pRead, int64_t ver, SWalReadHead **ppHead);
void walSetReaderCapacity(SWalReadHandle *pRead, int32_t capacity);
int32_t walFetchHead(SWalReadHandle *pRead, int64_t ver, SWalHead *pHead);
int32_t walFetchBody(SWalReadHandle *pRead, SWalHead **ppHead);
@ -211,13 +210,8 @@ void walCloseRef(SWalRef *);
int32_t walRefVer(SWalRef *, int64_t ver);
int32_t walUnrefVer(SWal *);
// deprecated
#if 0
int32_t walRead(SWal *, SWalHead **, int64_t ver);
int32_t walReadWithFp(SWal *, FWalWrite writeFp, int64_t verStart, int32_t readNum);
#endif
// lifecycle check
bool walIsEmpty(SWal *);
int64_t walGetFirstVer(SWal *);
int64_t walGetSnapshotVer(SWal *);
int64_t walGetLastVer(SWal *);

2
source/libs/wal/src/walMeta.c
View File

@ -19,6 +19,8 @@
#include "tref.h"
#include "walInt.h"
bool FORCE_INLINE walIsEmpty(SWal* pWal) { return pWal->vers.firstVer == -1; }
int64_t FORCE_INLINE walGetFirstVer(SWal* pWal) { return pWal->vers.firstVer; }
int64_t FORCE_INLINE walGetSnaphostVer(SWal* pWal) { return pWal->vers.snapshotVer; }

15
source/libs/wal/src/walWrite.c
View File

@ -141,7 +141,7 @@ int32_t walRollback(SWal *pWal, int64_t ver) {
// validate offset
SWalHead head;
ASSERT(taosValidFile(pLogTFile));
int size = taosReadFile(pLogTFile, &head, sizeof(SWalHead));
int64_t size = taosReadFile(pLogTFile, &head, sizeof(SWalHead));
if (size != sizeof(SWalHead)) {
return -1;
}
@ -149,22 +149,33 @@ int32_t walRollback(SWal *pWal, int64_t ver) {
ASSERT(code == 0);
if (code != 0) {
terrno = TSDB_CODE_WAL_FILE_CORRUPTED;
return -1;
}
if (head.head.version != ver) {
// TODO
ASSERT(0);
terrno = TSDB_CODE_WAL_FILE_CORRUPTED;
return -1;
}
// truncate old files
code = taosFtruncateFile(pLogTFile, entry.offset);
if (code < 0) {
ASSERT(0);
terrno = TAOS_SYSTEM_ERROR(errno);
return -1;
}
code = taosFtruncateFile(pIdxTFile, idxOff);
if (code < 0) {
ASSERT(0);
terrno = TAOS_SYSTEM_ERROR(errno);
return -1;
}
pWal->vers.lastVer = ver - 1;
if (pWal->vers.lastVer < pWal->vers.firstVer) {
ASSERT(pWal->vers.lastVer == pWal->vers.firstVer - 1);
pWal->vers.firstVer = -1;
}
((SWalFileInfo *)taosArrayGetLast(pWal->fileInfoSet))->lastVer = ver - 1;
((SWalFileInfo *)taosArrayGetLast(pWal->fileInfoSet))->fileSize = entry.offset;
taosCloseFile(&pIdxTFile);