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homework-jianmu/source/libs/executor/src/countwindowoperator.c

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/*
* 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 "executorInt.h"
#include "filter.h"
#include "function.h"
#include "functionMgt.h"
#include "operator.h"
#include "querytask.h"
#include "tcommon.h"
#include "tcompare.h"
#include "tdatablock.h"
#include "ttime.h"
typedef struct SCountWindowResult {
int32_t winRows;
SResultRow row;
} SCountWindowResult;
typedef struct SCountWindowSupp {
SArray* pWinStates;
int32_t stateIndex;
} SCountWindowSupp;
typedef struct SCountWindowOperatorInfo {
SOptrBasicInfo binfo;
SAggSupporter aggSup;
SExprSupp scalarSup;
int32_t tsSlotId; // primary timestamp column slot id
STimeWindowAggSupp twAggSup;
uint64_t groupId; // current group id, used to identify the data block from different groups
SResultRow* pRow;
int32_t windowCount;
int32_t windowSliding;
SCountWindowSupp countSup;
} SCountWindowOperatorInfo;
void destroyCountWindowOperatorInfo(void* param) {
SCountWindowOperatorInfo* pInfo = (SCountWindowOperatorInfo*)param;
if (pInfo == NULL) {
return;
}
cleanupBasicInfo(&pInfo->binfo);
colDataDestroy(&pInfo->twAggSup.timeWindowData);
cleanupAggSup(&pInfo->aggSup);
cleanupExprSupp(&pInfo->scalarSup);
taosArrayDestroy(pInfo->countSup.pWinStates);
taosMemoryFreeClear(param);
}
static void clearWinStateBuff(SCountWindowResult* pBuff) { pBuff->winRows = 0; }
static SCountWindowResult* getCountWinStateInfo(SCountWindowSupp* pCountSup) {
SCountWindowResult* pBuffInfo = taosArrayGet(pCountSup->pWinStates, pCountSup->stateIndex);
if (!pBuffInfo) {
return NULL;
}
int32_t size = taosArrayGetSize(pCountSup->pWinStates);
// coverity scan
ASSERTS(size > 0, "WinStates is empty");
if (size > 0) {
pCountSup->stateIndex = (pCountSup->stateIndex + 1) % size;
}
return pBuffInfo;
}
static int32_t setCountWindowOutputBuff(SExprSupp* pExprSup, SCountWindowSupp* pCountSup, SResultRow** pResult,
SCountWindowResult** ppResBuff) {
int32_t code = TSDB_CODE_SUCCESS;
int32_t lino = 0;
SCountWindowResult* pBuff = getCountWinStateInfo(pCountSup);
QUERY_CHECK_NULL(pBuff, code, lino, _end, terrno);
(*pResult) = &pBuff->row;
code = setResultRowInitCtx(*pResult, pExprSup->pCtx, pExprSup->numOfExprs, pExprSup->rowEntryInfoOffset);
(*ppResBuff) = pBuff;
_end:
if (code != TSDB_CODE_SUCCESS) {
qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
}
return code;
}
static int32_t updateCountWindowInfo(int32_t start, int32_t blockRows, int32_t countWinRows, int32_t* pCurrentRows) {
int32_t rows = TMIN(countWinRows - (*pCurrentRows), blockRows - start);
(*pCurrentRows) += rows;
return rows;
}
void doCountWindowAggImpl(SOperatorInfo* pOperator, SSDataBlock* pBlock) {
int32_t code = TSDB_CODE_SUCCESS;
int32_t lino = 0;
SExecTaskInfo* pTaskInfo = pOperator->pTaskInfo;
SExprSupp* pExprSup = &pOperator->exprSupp;
SCountWindowOperatorInfo* pInfo = pOperator->info;
SSDataBlock* pRes = pInfo->binfo.pRes;
SColumnInfoData* pColInfoData = taosArrayGet(pBlock->pDataBlock, pInfo->tsSlotId);
QUERY_CHECK_NULL(pColInfoData, code, lino, _end, terrno);
TSKEY* tsCols = (TSKEY*)pColInfoData->pData;
for (int32_t i = 0; i < pBlock->info.rows;) {
SCountWindowResult* pBuffInfo = NULL;
code = setCountWindowOutputBuff(pExprSup, &pInfo->countSup, &pInfo->pRow, &pBuffInfo);
if (code != TSDB_CODE_SUCCESS) {
qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
T_LONG_JMP(pTaskInfo->env, code);
}
int32_t prevRows = pBuffInfo->winRows;
int32_t num = updateCountWindowInfo(i, pBlock->info.rows, pInfo->windowCount, &pBuffInfo->winRows);
int32_t step = num;
if (prevRows == 0) {
pInfo->pRow->win.skey = tsCols[i];
}
pInfo->pRow->win.ekey = tsCols[num + i - 1];
updateTimeWindowInfo(&pInfo->twAggSup.timeWindowData, &pInfo->pRow->win, 0);
applyAggFunctionOnPartialTuples(pTaskInfo, pExprSup->pCtx, &pInfo->twAggSup.timeWindowData, i, num,
pBlock->info.rows, pExprSup->numOfExprs);
if (pBuffInfo->winRows == pInfo->windowCount) {
doUpdateNumOfRows(pExprSup->pCtx, pInfo->pRow, pExprSup->numOfExprs, pExprSup->rowEntryInfoOffset);
copyResultrowToDataBlock(pExprSup->pExprInfo, pExprSup->numOfExprs, pInfo->pRow, pExprSup->pCtx, pRes,
pExprSup->rowEntryInfoOffset, pTaskInfo);
pRes->info.rows += pInfo->pRow->numOfRows;
clearWinStateBuff(pBuffInfo);
clearResultRowInitFlag(pExprSup->pCtx, pExprSup->numOfExprs);
}
if (pInfo->windowCount != pInfo->windowSliding) {
if (prevRows <= pInfo->windowSliding) {
if (pBuffInfo->winRows > pInfo->windowSliding) {
step = pInfo->windowSliding - prevRows;
} else {
step = pInfo->windowSliding;
}
} else {
step = 0;
}
}
i += step;
}
_end:
if (code != TSDB_CODE_SUCCESS) {
qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
pTaskInfo->code = code;
T_LONG_JMP(pTaskInfo->env, code);
}
}
static void buildCountResult(SExprSupp* pExprSup, SCountWindowSupp* pCountSup, SExecTaskInfo* pTaskInfo,
SFilterInfo* pFilterInfo, SSDataBlock* pBlock) {
SResultRow* pResultRow = NULL;
int32_t code = TSDB_CODE_SUCCESS;
int32_t lino = 0;
for (int32_t i = 0; i < taosArrayGetSize(pCountSup->pWinStates); i++) {
SCountWindowResult* pBuff = NULL;
code = setCountWindowOutputBuff(pExprSup, pCountSup, &pResultRow, &pBuff);
QUERY_CHECK_CODE(code, lino, _end);
if (pBuff->winRows == 0) {
continue;
}
doUpdateNumOfRows(pExprSup->pCtx, pResultRow, pExprSup->numOfExprs, pExprSup->rowEntryInfoOffset);
copyResultrowToDataBlock(pExprSup->pExprInfo, pExprSup->numOfExprs, pResultRow, pExprSup->pCtx, pBlock,
pExprSup->rowEntryInfoOffset, pTaskInfo);
pBlock->info.rows += pResultRow->numOfRows;
clearWinStateBuff(pBuff);
clearResultRowInitFlag(pExprSup->pCtx, pExprSup->numOfExprs);
}
code = doFilter(pBlock, pFilterInfo, NULL);
QUERY_CHECK_CODE(code, lino, _end);
_end:
if (code != TSDB_CODE_SUCCESS) {
qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
T_LONG_JMP(pTaskInfo->env, code);
}
}
static int32_t countWindowAggregateNext(SOperatorInfo* pOperator, SSDataBlock** ppRes) {
int32_t code = TSDB_CODE_SUCCESS;
int32_t lino = 0;
SCountWindowOperatorInfo* pInfo = pOperator->info;
SExecTaskInfo* pTaskInfo = pOperator->pTaskInfo;
SExprSupp* pExprSup = &pOperator->exprSupp;
int32_t order = pInfo->binfo.inputTsOrder;
SSDataBlock* pRes = pInfo->binfo.pRes;
SOperatorInfo* downstream = pOperator->pDownstream[0];
blockDataCleanup(pRes);
while (1) {
SSDataBlock* pBlock = getNextBlockFromDownstream(pOperator, 0);
if (pBlock == NULL) {
break;
}
pRes->info.scanFlag = pBlock->info.scanFlag;
code = setInputDataBlock(pExprSup, pBlock, order, MAIN_SCAN, true);
QUERY_CHECK_CODE(code, lino, _end);
code = blockDataUpdateTsWindow(pBlock, pInfo->tsSlotId);
QUERY_CHECK_CODE(code, lino, _end);
// there is an scalar expression that needs to be calculated right before apply the group aggregation.
if (pInfo->scalarSup.pExprInfo != NULL) {
code = projectApplyFunctions(pInfo->scalarSup.pExprInfo, pBlock, pBlock, pInfo->scalarSup.pCtx,
pInfo->scalarSup.numOfExprs, NULL);
QUERY_CHECK_CODE(code, lino, _end);
}
if (pInfo->groupId == 0) {
pInfo->groupId = pBlock->info.id.groupId;
} else if (pInfo->groupId != pBlock->info.id.groupId) {
buildCountResult(pExprSup, &pInfo->countSup, pTaskInfo, pOperator->exprSupp.pFilterInfo, pRes);
pInfo->groupId = pBlock->info.id.groupId;
}
doCountWindowAggImpl(pOperator, pBlock);
if (pRes->info.rows >= pOperator->resultInfo.threshold) {
(*ppRes) = pRes;
return code;
}
}
buildCountResult(pExprSup, &pInfo->countSup, pTaskInfo, pOperator->exprSupp.pFilterInfo, pRes);
_end:
if (code != TSDB_CODE_SUCCESS) {
qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
pTaskInfo->code = code;
T_LONG_JMP(pTaskInfo->env, code);
}
(*ppRes) = pRes->info.rows == 0 ? NULL : pRes;
return code;
}
static SSDataBlock* countWindowAggregate(SOperatorInfo* pOperator) {
SSDataBlock* pRes = NULL;
int32_t code = countWindowAggregateNext(pOperator, &pRes);
return pRes;
}
int32_t createCountwindowOperatorInfo(SOperatorInfo* downstream, SPhysiNode* physiNode,
SExecTaskInfo* pTaskInfo, SOperatorInfo** pOptrInfo) {
QRY_OPTR_CHECK(pOptrInfo);
int32_t code = TSDB_CODE_SUCCESS;
int32_t lino = 0;
SCountWindowOperatorInfo* pInfo = taosMemoryCalloc(1, sizeof(SCountWindowOperatorInfo));
SOperatorInfo* pOperator = taosMemoryCalloc(1, sizeof(SOperatorInfo));
if (pInfo == NULL || pOperator == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _error;
}
pOperator->exprSupp.hasWindowOrGroup = true;
SCountWinodwPhysiNode* pCountWindowNode = (SCountWinodwPhysiNode*)physiNode;
pInfo->tsSlotId = ((SColumnNode*)pCountWindowNode->window.pTspk)->slotId;
if (pCountWindowNode->window.pExprs != NULL) {
int32_t numOfScalarExpr = 0;
SExprInfo* pScalarExprInfo = NULL;
code = createExprInfo(pCountWindowNode->window.pExprs, NULL, &pScalarExprInfo, &numOfScalarExpr);
QUERY_CHECK_CODE(code, lino, _error);
code = initExprSupp(&pInfo->scalarSup, pScalarExprInfo, numOfScalarExpr, &pTaskInfo->storageAPI.functionStore);
QUERY_CHECK_CODE(code, lino, _error);
}
size_t keyBufSize = 0;
int32_t num = 0;
SExprInfo* pExprInfo = NULL;
code = createExprInfo(pCountWindowNode->window.pFuncs, NULL, &pExprInfo, &num);
QUERY_CHECK_CODE(code, lino, _error);
initResultSizeInfo(&pOperator->resultInfo, 4096);
code = initAggSup(&pOperator->exprSupp, &pInfo->aggSup, pExprInfo, num, keyBufSize, pTaskInfo->id.str,
pTaskInfo->streamInfo.pState, &pTaskInfo->storageAPI.functionStore);
QUERY_CHECK_CODE(code, lino, _error);
SSDataBlock* pResBlock = createDataBlockFromDescNode(pCountWindowNode->window.node.pOutputDataBlockDesc);
QUERY_CHECK_NULL(pResBlock, code, lino, _error, terrno);
code = blockDataEnsureCapacity(pResBlock, pOperator->resultInfo.capacity);
QUERY_CHECK_CODE(code, lino, _error);
initBasicInfo(&pInfo->binfo, pResBlock);
initResultRowInfo(&pInfo->binfo.resultRowInfo);
pInfo->binfo.inputTsOrder = physiNode->inputTsOrder;
pInfo->binfo.outputTsOrder = physiNode->outputTsOrder;
pInfo->windowCount = pCountWindowNode->windowCount;
pInfo->windowSliding = pCountWindowNode->windowSliding;
// sizeof(SCountWindowResult)
int32_t itemSize = sizeof(int32_t) + pInfo->aggSup.resultRowSize;
int32_t numOfItem = 1;
if (pInfo->windowCount != pInfo->windowSliding) {
numOfItem = pInfo->windowCount / pInfo->windowSliding + 1;
}
pInfo->countSup.pWinStates = taosArrayInit_s(itemSize, numOfItem);
if (!pInfo->countSup.pWinStates) {
goto _error;
}
pInfo->countSup.stateIndex = 0;
code = filterInitFromNode((SNode*)pCountWindowNode->window.node.pConditions, &pOperator->exprSupp.pFilterInfo, 0);
QUERY_CHECK_CODE(code, lino, _error);
code = initExecTimeWindowInfo(&pInfo->twAggSup.timeWindowData, &pTaskInfo->window);
QUERY_CHECK_CODE(code, lino, _error);
setOperatorInfo(pOperator, "CountWindowOperator", QUERY_NODE_PHYSICAL_PLAN_MERGE_COUNT, true, OP_NOT_OPENED, pInfo,
pTaskInfo);
pOperator->fpSet = createOperatorFpSet(optrDummyOpenFn, countWindowAggregate, NULL, destroyCountWindowOperatorInfo,
optrDefaultBufFn, NULL, optrDefaultGetNextExtFn, NULL);
code = appendDownstream(pOperator, &downstream, 1);
if (code != TSDB_CODE_SUCCESS) {
goto _error;
}
*pOptrInfo = pOperator;
return code;
_error:
if (pInfo != NULL) {
destroyCountWindowOperatorInfo(pInfo);
}
destroyOperator(pOperator);
pTaskInfo->code = code;
return code;
}
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