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more meta

This commit is contained in:
Hongze Cheng 2022-03-29 07:04:17 +00:00
parent 8a0d117acf
commit 5d1d22552a
1 changed files with 109 additions and 13 deletions
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122
source/dnode/vnode/src/meta/metaTDBImpl.c
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@ -301,6 +301,7 @@ STbCfg *metaGetTbInfoByUid(SMeta *pMeta, tb_uid_t uid) {
// Fetch
pKey = &uid;
kLen = sizeof(uid);
pVal = NULL;
ret = tdbDbGet(pMetaDb->pTbDB, pKey, kLen, &pVal, &vLen);
if (ret < 0) {
return NULL;
@ -324,6 +325,7 @@ STbCfg *metaGetTbInfoByName(SMeta *pMeta, char *tbname, tb_uid_t *uid) {
pKey = tbname;
kLen = strlen(tbname) + 1;
pVal = NULL;
ret = tdbDbGet(pMeta->pDB->pNameIdx, pKey, kLen, &pVal, &vLen);
if (ret < 0) {
return NULL;
@ -336,34 +338,128 @@ STbCfg *metaGetTbInfoByName(SMeta *pMeta, char *tbname, tb_uid_t *uid) {
}
SSchemaWrapper *metaGetTableSchema(SMeta *pMeta, tb_uid_t uid, int32_t sver, bool isinline) {
// TODO
ASSERT(0);
return NULL;
void *pKey;
void *pVal;
int kLen;
int vLen;
int ret;
SSchemaDbKey schemaDbKey;
SSchemaWrapper *pSchemaWrapper;
void *pBuf;
// fetch
schemaDbKey.uid = uid;
schemaDbKey.sver = sver;
pKey = &schemaDbKey;
kLen = sizeof(schemaDbKey);
pVal = NULL;
ret = tdbDbGet(pMeta->pDB->pSchemaDB, pKey, kLen, &pVal, &vLen);
if (ret < 0) {
return NULL;
}
// decode
pBuf = pVal;
pSchemaWrapper = taosMemoryMalloc(sizeof(*pSchemaWrapper));
metaDecodeSchema(pBuf, pSchemaWrapper);
TDB_FREE(pVal);
return pSchemaWrapper;
}
STSchema *metaGetTbTSchema(SMeta *pMeta, tb_uid_t uid, int32_t sver) {
// TODO
ASSERT(0);
return NULL;
tb_uid_t quid;
SSchemaWrapper *pSW;
STSchemaBuilder sb;
SSchema *pSchema;
STSchema *pTSchema;
STbCfg *pTbCfg;
pTbCfg = metaGetTbInfoByUid(pMeta, uid);
if (pTbCfg->type == META_CHILD_TABLE) {
quid = pTbCfg->ctbCfg.suid;
} else {
quid = uid;
}
pSW = metaGetTableSchema(pMeta, quid, sver, true);
if (pSW == NULL) {
return NULL;
}
tdInitTSchemaBuilder(&sb, 0);
for (int i = 0; i < pSW->nCols; i++) {
pSchema = pSW->pSchema + i;
tdAddColToSchema(&sb, pSchema->type, pSchema->colId, pSchema->bytes);
}
pTSchema = tdGetSchemaFromBuilder(&sb);
tdDestroyTSchemaBuilder(&sb);
return pTSchema;
}
struct SMTbCursor {
TDBC *pDbc;
};
SMTbCursor *metaOpenTbCursor(SMeta *pMeta) {
// TODO
ASSERT(0);
return NULL;
SMTbCursor *pTbCur = NULL;
SMetaDB *pDB = pMeta->pDB;
pTbCur = (SMTbCursor *)taosMemoryCalloc(1, sizeof(*pTbCur));
if (pTbCur == NULL) {
return NULL;
}
tdbDbcOpen(pDB->pTbDB, &pTbCur->pDbc);
return pTbCur;
}
void metaCloseTbCursor(SMTbCursor *pTbCur) {
// TODO
ASSERT(0);
if (pTbCur) {
if (pTbCur->pDbc) {
tdbDbcClose(pTbCur->pDbc);
}
taosMemoryFree(pTbCur);
}
}
char *metaTbCursorNext(SMTbCursor *pTbCur) {
// TODO
ASSERT(0);
void *pKey = NULL;
void *pVal = NULL;
int kLen;
int vLen;
int ret;
void *pBuf;
STbCfg tbCfg;
for (;;) {
ret = tdbDbNext(pTbCur->pDbc, &pKey, &kLen, &pVal, &vLen);
if (ret < 0) break;
pBuf = pVal;
metaDecodeTbInfo(pBuf, &tbCfg);
if (tbCfg.type == META_SUPER_TABLE) {
taosMemoryFree(tbCfg.name);
taosMemoryFree(tbCfg.stbCfg.pTagSchema);
continue;
;
} else if (tbCfg.type == META_CHILD_TABLE) {
kvRowFree(tbCfg.ctbCfg.pTag);
}
return tbCfg.name;
}
return NULL;
}
struct SMCtbCursor {
TDBC *pCur;
tb_uid_t suid;
};
SMCtbCursor *metaOpenCtbCursor(SMeta *pMeta, tb_uid_t uid) {
// TODO
ASSERT(0);