430 lines
14 KiB
C
430 lines
14 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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#include "taoserror.h"
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#include "tarray.h"
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#include "tcommon.h"
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#include "tsdb.h"
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#include "tsdbDataFileRW.h"
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#include "tsdbReadUtil.h"
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#define HASTYPE(_type, _t) (((_type) & (_t)) == (_t))
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static int32_t saveOneRow(SArray* pRow, SSDataBlock* pBlock, SCacheRowsReader* pReader, const int32_t* slotIds,
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const int32_t* dstSlotIds, void** pRes, const char* idStr) {
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int32_t numOfRows = pBlock->info.rows;
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bool allNullRow = true;
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if (HASTYPE(pReader->type, CACHESCAN_RETRIEVE_LAST)) {
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for (int32_t i = 0; i < pReader->numOfCols; ++i) {
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SColumnInfoData* pColInfoData = taosArrayGet(pBlock->pDataBlock, dstSlotIds[i]);
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SFirstLastRes* p = (SFirstLastRes*)varDataVal(pRes[i]);
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int32_t slotId = slotIds[i];
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SLastCol* pColVal = (SLastCol*)taosArrayGet(pRow, i);
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p->ts = pColVal->ts;
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p->isNull = !COL_VAL_IS_VALUE(&pColVal->colVal);
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allNullRow = p->isNull & allNullRow;
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if (!p->isNull) {
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if (IS_VAR_DATA_TYPE(pColVal->colVal.type)) {
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varDataSetLen(p->buf, pColVal->colVal.value.nData);
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memcpy(varDataVal(p->buf), pColVal->colVal.value.pData, pColVal->colVal.value.nData);
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p->bytes = pColVal->colVal.value.nData + VARSTR_HEADER_SIZE; // binary needs to plus the header size
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} else {
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memcpy(p->buf, &pColVal->colVal.value, pReader->pSchema->columns[slotId].bytes);
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p->bytes = pReader->pSchema->columns[slotId].bytes;
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}
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}
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// pColInfoData->info.bytes includes the VARSTR_HEADER_SIZE, need to substruct it
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p->hasResult = true;
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varDataSetLen(pRes[i], pColInfoData->info.bytes - VARSTR_HEADER_SIZE);
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colDataSetVal(pColInfoData, numOfRows, (const char*)pRes[i], false);
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}
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pBlock->info.rows += allNullRow ? 0 : 1;
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} else if (HASTYPE(pReader->type, CACHESCAN_RETRIEVE_LAST_ROW)) {
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for (int32_t i = 0; i < pReader->numOfCols; ++i) {
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SColumnInfoData* pColInfoData = taosArrayGet(pBlock->pDataBlock, dstSlotIds[i]);
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int32_t slotId = slotIds[i];
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SLastCol* pColVal = (SLastCol*)taosArrayGet(pRow, i);
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SColVal* pVal = &pColVal->colVal;
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allNullRow = false;
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if (IS_VAR_DATA_TYPE(pColVal->colVal.type)) {
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if (!COL_VAL_IS_VALUE(&pColVal->colVal)) {
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colDataSetNULL(pColInfoData, numOfRows);
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} else {
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varDataSetLen(pReader->transferBuf[slotId], pVal->value.nData);
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memcpy(varDataVal(pReader->transferBuf[slotId]), pVal->value.pData, pVal->value.nData);
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colDataSetVal(pColInfoData, numOfRows, pReader->transferBuf[slotId], false);
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}
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} else {
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colDataSetVal(pColInfoData, numOfRows, (const char*)&pVal->value.val, !COL_VAL_IS_VALUE(pVal));
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}
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}
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pBlock->info.rows += allNullRow ? 0 : 1;
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} else {
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tsdbError("invalid retrieve type:%d, %s", pReader->type, idStr);
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return TSDB_CODE_INVALID_PARA;
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}
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return TSDB_CODE_SUCCESS;
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}
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static int32_t setTableSchema(SCacheRowsReader* p, uint64_t suid, const char* idstr) {
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int32_t numOfTables = p->numOfTables;
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if (suid != 0) {
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p->pSchema = metaGetTbTSchema(p->pVnode->pMeta, suid, -1, 1);
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if (p->pSchema == NULL) {
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tsdbWarn("stable:%" PRIu64 " has been dropped, failed to retrieve cached rows, %s", suid, idstr);
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return TSDB_CODE_PAR_TABLE_NOT_EXIST;
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}
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} else {
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for (int32_t i = 0; i < numOfTables; ++i) {
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uint64_t uid = p->pTableList[i].uid;
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p->pSchema = metaGetTbTSchema(p->pVnode->pMeta, uid, -1, 1);
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if (p->pSchema != NULL) {
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break;
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}
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tsdbWarn("table:%" PRIu64 " has been dropped, failed to retrieve cached rows, %s", uid, idstr);
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}
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// all queried tables have been dropped already, return immediately.
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if (p->pSchema == NULL) {
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tsdbWarn("all queried tables has been dropped, try next group, %s", idstr);
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return TSDB_CODE_PAR_TABLE_NOT_EXIST;
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}
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}
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return TSDB_CODE_SUCCESS;
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}
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int32_t tsdbReuseCacherowsReader(void* reader, void* pTableIdList, int32_t numOfTables) {
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SCacheRowsReader* pReader = (SCacheRowsReader*)reader;
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pReader->pTableList = pTableIdList;
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pReader->numOfTables = numOfTables;
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pReader->lastTs = INT64_MIN;
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pReader->pLDataIterArray = destroySttBlockReader(pReader->pLDataIterArray, NULL);
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pReader->pLDataIterArray = taosArrayInit(4, POINTER_BYTES);
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return TSDB_CODE_SUCCESS;
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}
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int32_t tsdbCacherowsReaderOpen(void* pVnode, int32_t type, void* pTableIdList, int32_t numOfTables, int32_t numOfCols,
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SArray* pCidList, int32_t* pSlotIds, uint64_t suid, void** pReader, const char* idstr) {
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*pReader = NULL;
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SCacheRowsReader* p = taosMemoryCalloc(1, sizeof(SCacheRowsReader));
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if (p == NULL) {
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return TSDB_CODE_OUT_OF_MEMORY;
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}
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p->type = type;
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p->pVnode = pVnode;
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p->pTsdb = p->pVnode->pTsdb;
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p->info.verRange = (SVersionRange){.minVer = 0, .maxVer = UINT64_MAX};
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p->info.suid = suid;
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p->numOfCols = numOfCols;
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p->pCidList = pCidList;
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p->pSlotIds = pSlotIds;
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if (numOfTables == 0) {
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*pReader = p;
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return TSDB_CODE_SUCCESS;
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}
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p->pTableList = pTableIdList;
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p->numOfTables = numOfTables;
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int32_t code = setTableSchema(p, suid, idstr);
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if (code != TSDB_CODE_SUCCESS) {
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tsdbCacherowsReaderClose(p);
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return code;
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}
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p->transferBuf = taosMemoryCalloc(p->pSchema->numOfCols, POINTER_BYTES);
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if (p->transferBuf == NULL) {
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tsdbCacherowsReaderClose(p);
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return TSDB_CODE_OUT_OF_MEMORY;
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}
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for (int32_t i = 0; i < p->pSchema->numOfCols; ++i) {
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if (IS_VAR_DATA_TYPE(p->pSchema->columns[i].type)) {
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p->transferBuf[i] = taosMemoryMalloc(p->pSchema->columns[i].bytes);
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if (p->transferBuf[i] == NULL) {
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tsdbCacherowsReaderClose(p);
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return TSDB_CODE_OUT_OF_MEMORY;
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}
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}
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}
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p->idstr = taosStrdup(idstr);
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taosThreadMutexInit(&p->readerMutex, NULL);
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p->lastTs = INT64_MIN;
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*pReader = p;
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return TSDB_CODE_SUCCESS;
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}
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void* tsdbCacherowsReaderClose(void* pReader) {
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SCacheRowsReader* p = pReader;
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if (p == NULL) {
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return NULL;
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}
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if (p->pSchema != NULL) {
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for (int32_t i = 0; i < p->pSchema->numOfCols; ++i) {
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taosMemoryFreeClear(p->transferBuf[i]);
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}
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taosMemoryFree(p->transferBuf);
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taosMemoryFree(p->pSchema);
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}
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taosMemoryFree(p->pCurrSchema);
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if (p->pLDataIterArray) {
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destroySttBlockReader(p->pLDataIterArray, NULL);
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}
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if (p->pFileReader) {
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tsdbDataFileReaderClose(&p->pFileReader);
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p->pFileReader = NULL;
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}
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taosMemoryFree((void*)p->idstr);
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taosThreadMutexDestroy(&p->readerMutex);
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if (p->pTableMap) {
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void* pe = NULL;
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int32_t iter = 0;
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while ((pe = tSimpleHashIterate(p->pTableMap, pe, &iter)) != NULL) {
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STableLoadInfo* pInfo = *(STableLoadInfo**)pe;
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pInfo->pTombData = taosArrayDestroy(pInfo->pTombData);
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}
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tSimpleHashCleanup(p->pTableMap);
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}
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if (p->uidList) {
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taosMemoryFree(p->uidList);
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}
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taosMemoryFree(pReader);
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return NULL;
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}
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static void freeItem(void* pItem) {
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SLastCol* pCol = (SLastCol*)pItem;
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if (IS_VAR_DATA_TYPE(pCol->colVal.type) && pCol->colVal.value.pData) {
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taosMemoryFree(pCol->colVal.value.pData);
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}
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}
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static int32_t tsdbCacheQueryReseek(void* pQHandle) {
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int32_t code = 0;
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SCacheRowsReader* pReader = pQHandle;
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code = taosThreadMutexTryLock(&pReader->readerMutex);
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if (code == 0) {
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// pause current reader's state if not paused, save ts & version for resuming
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// just wait for the big all tables' snapshot untaking for now
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code = TSDB_CODE_VND_QUERY_BUSY;
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taosThreadMutexUnlock(&pReader->readerMutex);
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return code;
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} else if (code == EBUSY) {
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return TSDB_CODE_VND_QUERY_BUSY;
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} else {
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return -1;
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}
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}
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int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32_t* slotIds, const int32_t* dstSlotIds,
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SArray* pTableUidList) {
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if (pReader == NULL || pResBlock == NULL) {
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return TSDB_CODE_INVALID_PARA;
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}
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SCacheRowsReader* pr = pReader;
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int32_t code = TSDB_CODE_SUCCESS;
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SArray* pRow = taosArrayInit(TARRAY_SIZE(pr->pCidList), sizeof(SLastCol));
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bool hasRes = false;
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void** pRes = taosMemoryCalloc(pr->numOfCols, POINTER_BYTES);
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if (pRes == NULL) {
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code = TSDB_CODE_OUT_OF_MEMORY;
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goto _end;
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}
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for (int32_t j = 0; j < pr->numOfCols; ++j) {
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pRes[j] = taosMemoryCalloc(1, sizeof(SFirstLastRes) + pr->pSchema->columns[slotIds[j]].bytes + VARSTR_HEADER_SIZE);
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SFirstLastRes* p = (SFirstLastRes*)varDataVal(pRes[j]);
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p->ts = INT64_MIN;
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}
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taosThreadMutexLock(&pr->readerMutex);
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code = tsdbTakeReadSnap2((STsdbReader*)pr, tsdbCacheQueryReseek, &pr->pReadSnap);
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if (code != TSDB_CODE_SUCCESS) {
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goto _end;
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}
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int8_t ltype = (pr->type & CACHESCAN_RETRIEVE_LAST) >> 3;
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STableKeyInfo* pTableList = pr->pTableList;
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// retrieve the only one last row of all tables in the uid list.
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if (HASTYPE(pr->type, CACHESCAN_RETRIEVE_TYPE_SINGLE)) {
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SArray* pLastCols = taosArrayInit(pr->numOfCols, sizeof(SLastCol));
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if (pLastCols == NULL) {
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code = TSDB_CODE_OUT_OF_MEMORY;
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goto _end;
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}
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for (int32_t i = 0; i < pr->numOfCols; ++i) {
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int32_t slotId = slotIds[i];
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struct STColumn* pCol = &pr->pSchema->columns[slotId];
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SLastCol p = {.ts = INT64_MIN, .colVal.type = pCol->type, .colVal.flag = CV_FLAG_NULL};
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if (IS_VAR_DATA_TYPE(pCol->type)) {
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p.colVal.value.pData = taosMemoryCalloc(pCol->bytes, sizeof(char));
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}
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taosArrayPush(pLastCols, &p);
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}
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int64_t st = taosGetTimestampUs();
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int64_t totalLastTs = INT64_MAX;
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for (int32_t i = 0; i < pr->numOfTables; ++i) {
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tb_uid_t uid = pTableList[i].uid;
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tsdbCacheGetBatch(pr->pTsdb, uid, pRow, pr, ltype);
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if (TARRAY_SIZE(pRow) <= 0 || COL_VAL_IS_NONE(&((SLastCol*)TARRAY_DATA(pRow))[0].colVal)) {
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taosArrayClearEx(pRow, freeItem);
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continue;
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}
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{
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bool hasNotNullRow = true;
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int64_t singleTableLastTs = INT64_MAX;
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for (int32_t k = 0; k < pr->numOfCols; ++k) {
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SLastCol* p = taosArrayGet(pLastCols, k);
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SLastCol* pColVal = (SLastCol*)taosArrayGet(pRow, k);
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if (pColVal->ts > p->ts) {
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if (!COL_VAL_IS_VALUE(&pColVal->colVal) && HASTYPE(pr->type, CACHESCAN_RETRIEVE_LAST)) {
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if (!COL_VAL_IS_VALUE(&p->colVal)) {
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hasNotNullRow = false;
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}
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continue;
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}
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hasRes = true;
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p->ts = pColVal->ts;
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if (k == 0) {
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if (TARRAY_SIZE(pTableUidList) == 0) {
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taosArrayPush(pTableUidList, &uid);
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} else {
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taosArraySet(pTableUidList, 0, &uid);
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}
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}
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if (pColVal->ts < singleTableLastTs && HASTYPE(pr->type, CACHESCAN_RETRIEVE_LAST)) {
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singleTableLastTs = pColVal->ts;
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}
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if (!IS_VAR_DATA_TYPE(pColVal->colVal.type)) {
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p->colVal = pColVal->colVal;
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} else {
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if (COL_VAL_IS_VALUE(&pColVal->colVal)) {
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memcpy(p->colVal.value.pData, pColVal->colVal.value.pData, pColVal->colVal.value.nData);
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}
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p->colVal.value.nData = pColVal->colVal.value.nData;
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p->colVal.type = pColVal->colVal.type;
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p->colVal.flag = pColVal->colVal.flag;
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p->colVal.cid = pColVal->colVal.cid;
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}
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}
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}
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if (hasNotNullRow) {
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if (INT64_MAX == totalLastTs || (INT64_MAX != singleTableLastTs && totalLastTs < singleTableLastTs)) {
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totalLastTs = singleTableLastTs;
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}
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double cost = (taosGetTimestampUs() - st) / 1000.0;
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if (cost > tsCacheLazyLoadThreshold) {
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pr->lastTs = totalLastTs;
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}
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}
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}
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taosArrayClearEx(pRow, freeItem);
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}
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if (hasRes) {
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saveOneRow(pLastCols, pResBlock, pr, slotIds, dstSlotIds, pRes, pr->idstr);
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}
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taosArrayDestroyEx(pLastCols, freeItem);
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} else if (HASTYPE(pr->type, CACHESCAN_RETRIEVE_TYPE_ALL)) {
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for (int32_t i = pr->tableIndex; i < pr->numOfTables; ++i) {
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tb_uid_t uid = pTableList[i].uid;
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tsdbCacheGetBatch(pr->pTsdb, uid, pRow, pr, ltype);
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if (TARRAY_SIZE(pRow) <= 0 || COL_VAL_IS_NONE(&((SLastCol*)TARRAY_DATA(pRow))[0].colVal)) {
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taosArrayClearEx(pRow, freeItem);
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continue;
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}
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saveOneRow(pRow, pResBlock, pr, slotIds, dstSlotIds, pRes, pr->idstr);
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taosArrayClearEx(pRow, freeItem);
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taosArrayPush(pTableUidList, &uid);
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++pr->tableIndex;
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if (pResBlock->info.rows >= pResBlock->info.capacity) {
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goto _end;
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}
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}
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} else {
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code = TSDB_CODE_INVALID_PARA;
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}
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_end:
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tsdbUntakeReadSnap2((STsdbReader*)pr, pr->pReadSnap, true);
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taosThreadMutexUnlock(&pr->readerMutex);
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if (pRes != NULL) {
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for (int32_t j = 0; j < pr->numOfCols; ++j) {
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taosMemoryFree(pRes[j]);
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}
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}
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taosMemoryFree(pRes);
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taosArrayDestroy(pRow);
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return code;
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}
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