Skip to content

T
TDengine

taosdata / TDengine
1 年多 前同步成功

通知 1185
Star 22016
Fork 4786
T
TDengine
提交 18fcb334 编写于 作者: H Haojun Liao
浏览文件
操作

refactor: do some internal refactor.

上级 a170b3fa
隐藏空白更改
内联 并排
Showing with 184 addition and 267 deletion
source/libs/executor/src/executorimpl.c
浏览文件 @ 18fcb334
......@@ -13,7 +13,6 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libs/function/function.h>
#include "filter.h"
#include "function.h"
#include "functionMgt.h"
......@@ -1601,9 +1600,6 @@ void doCompactSDataBlock(SSDataBlock* pBlock, int32_t numOfRows, int8_t* p) {
}
}
static SColumnInfo* doGetTagColumnInfoById(SColumnInfo* pTagColList, int32_t numOfTags, int16_t colId);
static void doSetTagValueInParam(void* pTable, int32_t tagColId, SVariant* tag, int16_t type, int16_t bytes);
static uint32_t doFilterByBlockTimeWindow(STableScanInfo* pTableScanInfo, SSDataBlock* pBlock) {
SqlFunctionCtx* pCtx = pTableScanInfo->pCtx;
uint32_t status = BLK_DATA_NOT_LOAD;
......@@ -1771,100 +1767,6 @@ int32_t loadDataBlockOnDemand(SExecTaskInfo* pTaskInfo, STableScanInfo* pTableSc
return TSDB_CODE_SUCCESS;
}
/*
* set tag value in SqlFunctionCtx
* e.g.,tag information into input buffer
*/
static void doSetTagValueInParam(void* pTable, int32_t tagColId, SVariant* tag, int16_t type, int16_t bytes) {
taosVariantDestroy(tag);
char* val = NULL;
// if (tagColId == TSDB_TBNAME_COLUMN_INDEX) {
// val = tsdbGetTableName(pTable);
// assert(val != NULL);
// } else {
// val = tsdbGetTableTagVal(pTable, tagColId, type, bytes);
// }
if (val == NULL || isNull(val, type)) {
tag->nType = TSDB_DATA_TYPE_NULL;
return;
}
if (type == TSDB_DATA_TYPE_BINARY || type == TSDB_DATA_TYPE_NCHAR) {
int32_t maxLen = bytes - VARSTR_HEADER_SIZE;
int32_t len = (varDataLen(val) > maxLen) ? maxLen : varDataLen(val);
taosVariantCreateFromBinary(tag, varDataVal(val), len, type);
// taosVariantCreateFromBinary(tag, varDataVal(val), varDataLen(val), type);
} else {
taosVariantCreateFromBinary(tag, val, bytes, type);
}
}
static SColumnInfo* doGetTagColumnInfoById(SColumnInfo* pTagColList, int32_t numOfTags, int16_t colId) {
assert(pTagColList != NULL && numOfTags > 0);
for (int32_t i = 0; i < numOfTags; ++i) {
if (pTagColList[i].colId == colId) {
return &pTagColList[i];
}
}
return NULL;
}
void setTagValue(SOperatorInfo* pOperatorInfo, void* pTable, SqlFunctionCtx* pCtx, int32_t numOfOutput) {
SExprInfo* pExpr = pOperatorInfo->pExpr;
SExprInfo* pExprInfo = &pExpr[0];
int32_t functionId = getExprFunctionId(pExprInfo);
#if 0
if (pQueryAttr->numOfOutput == 1 && functionId == FUNCTION_TS_COMP && pQueryAttr->stableQuery) {
assert(pExprInfo->base.numOfParams == 1);
// int16_t tagColId = (int16_t)pExprInfo->base.param[0].i;
int16_t tagColId = -1;
SColumnInfo* pColInfo = doGetTagColumnInfoById(pQueryAttr->tagColList, pQueryAttr->numOfTags, tagColId);
doSetTagValueInParam(pTable, tagColId, &pCtx[0].tag, pColInfo->type, pColInfo->bytes);
} else {
// set tag value, by which the results are aggregated.
int32_t offset = 0;
memset(pRuntimeEnv->tagVal, 0, pQueryAttr->tagLen);
for (int32_t idx = 0; idx < numOfOutput; ++idx) {
SExprInfo* pLocalExprInfo = &pExpr[idx];
// ts_comp column required the tag value for join filter
if (!TSDB_COL_IS_TAG(pLocalExprInfo->base.pParam[0].pCol->flag)) {
continue;
}
// todo use tag column index to optimize performance
doSetTagValueInParam(pTable, pLocalExprInfo->base.pParam[0].pCol->colId, &pCtx[idx].tag,
pLocalExprInfo->base.resSchema.type, pLocalExprInfo->base.resSchema.bytes);
if (IS_NUMERIC_TYPE(pLocalExprInfo->base.resSchema.type) ||
pLocalExprInfo->base.resSchema.type == TSDB_DATA_TYPE_BOOL ||
pLocalExprInfo->base.resSchema.type == TSDB_DATA_TYPE_TIMESTAMP) {
memcpy(pRuntimeEnv->tagVal + offset, &pCtx[idx].tag.i, pLocalExprInfo->base.resSchema.bytes);
} else {
if (pCtx[idx].tag.pz != NULL) {
memcpy(pRuntimeEnv->tagVal + offset, pCtx[idx].tag.pz, pCtx[idx].tag.nLen);
}
}
offset += pLocalExprInfo->base.resSchema.bytes;
}
}
// set the tsBuf start position before check each data block
if (pRuntimeEnv->pTsBuf != NULL) {
setCtxTagForJoin(pRuntimeEnv, &pCtx[0], pExprInfo, pTable);
}
#endif
}
void copyToSDataBlock(SSDataBlock* pBlock, int32_t* offset, SGroupResInfo* pGroupResInfo, SDiskbasedBuf* pResBuf) {
pBlock->info.rows = 0;
......@@ -4038,12 +3940,6 @@ static SSDataBlock* doProjectOperation(SOperatorInfo* pOperator) {
if (pProjectInfo->existDataBlock) { // TODO refactor
SSDataBlock* pBlock = pProjectInfo->existDataBlock;
pProjectInfo->existDataBlock = NULL;
*newgroup = true;
// todo dynamic set tags
// if (pTableQueryInfo != NULL) {
// setTagValue(pOperator, pTableQueryInfo->pTable, pInfo->pCtx, pOperator->numOfExprs);
// }
// the pDataBlock are always the same one, no need to call this again
setInputDataBlock(pOperator, pInfo->pCtx, pBlock, TSDB_ORDER_ASC);
......@@ -4084,13 +3980,6 @@ static SSDataBlock* doProjectOperation(SOperatorInfo* pOperator) {
}
}
// todo set tags
// STableQueryInfo* pTableQueryInfo = pRuntimeEnv->current;
// if (pTableQueryInfo != NULL) {
// setTagValue(pOperator, pTableQueryInfo->pTable, pInfo->pCtx, pOperator->numOfExprs);
// }
// the pDataBlock are always the same one, no need to call this again
int32_t code = getTableScanInfo(pOperator->pDownstream[0], &order, &scanFlag);
......@@ -4430,10 +4319,6 @@ void destroyBasicOperatorInfo(void* param, int32_t numOfOutput) {
doDestroyBasicInfo(pInfo, numOfOutput);
}
void destroyMergeJoinOperator(void* param, int32_t numOfOutput) {
SJoinOperatorInfo* pJoinOperator = (SJoinOperatorInfo*)param;
}
void destroyAggOperatorInfo(void* param, int32_t numOfOutput) {
SAggOperatorInfo* pInfo = (SAggOperatorInfo*)param;
doDestroyBasicInfo(&pInfo->binfo, numOfOutput);
......@@ -4778,7 +4663,6 @@ static SArray* extractColumnInfo(SNodeList* pNodeList);
static SArray* createSortInfo(SNodeList* pNodeList);
static SArray* extractPartitionColInfo(SNodeList* pNodeList);
static void setJoinColumnInfo(SColumnInfo* pColumn, const SColumnNode* pColumnNode);
SOperatorInfo* createOperatorTree(SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo, SReadHandle* pHandle,
uint64_t queryId, uint64_t taskId, STableGroupInfo* pTableGroupInfo) {
......@@ -5447,150 +5331,3 @@ int32_t getOperatorExplainExecInfo(SOperatorInfo* operatorInfo, SExplainExecInfo
return TSDB_CODE_SUCCESS;
}
static SSDataBlock* doMergeJoin(struct SOperatorInfo* pOperator) {
SJoinOperatorInfo* pJoinInfo = pOperator->info;
SSDataBlock* pRes = pJoinInfo->pRes;
blockDataCleanup(pRes);
blockDataEnsureCapacity(pRes, 4096);
int32_t nrows = 0;
while (1) {
if (pJoinInfo->pLeft == NULL || pJoinInfo->leftPos >= pJoinInfo->pLeft->info.rows) {
SOperatorInfo* ds1 = pOperator->pDownstream[0];
publishOperatorProfEvent(ds1, QUERY_PROF_BEFORE_OPERATOR_EXEC);
pJoinInfo->pLeft = ds1->fpSet.getNextFn(ds1);
publishOperatorProfEvent(ds1, QUERY_PROF_AFTER_OPERATOR_EXEC);
pJoinInfo->leftPos = 0;
if (pJoinInfo->pLeft == NULL) {
setTaskStatus(pOperator->pTaskInfo, TASK_COMPLETED);
break;
}
}
if (pJoinInfo->pRight == NULL || pJoinInfo->rightPos >= pJoinInfo->pRight->info.rows) {
SOperatorInfo* ds2 = pOperator->pDownstream[1];
publishOperatorProfEvent(ds2, QUERY_PROF_BEFORE_OPERATOR_EXEC);
pJoinInfo->pRight = ds2->fpSet.getNextFn(ds2);
publishOperatorProfEvent(ds2, QUERY_PROF_AFTER_OPERATOR_EXEC);
pJoinInfo->rightPos = 0;
if (pJoinInfo->pRight == NULL) {
setTaskStatus(pOperator->pTaskInfo, TASK_COMPLETED);
break;
}
}
SColumnInfoData* pLeftCol = taosArrayGet(pJoinInfo->pLeft->pDataBlock, pJoinInfo->leftCol.slotId);
char* pLeftVal = colDataGetData(pLeftCol, pJoinInfo->leftPos);
SColumnInfoData* pRightCol = taosArrayGet(pJoinInfo->pRight->pDataBlock, pJoinInfo->rightCol.slotId);
char* pRightVal = colDataGetData(pRightCol, pJoinInfo->rightPos);
// only the timestamp match support for ordinary table
ASSERT(pLeftCol->info.type == TSDB_DATA_TYPE_TIMESTAMP);
if (*(int64_t*)pLeftVal == *(int64_t*)pRightVal) {
for (int32_t i = 0; i < pOperator->numOfExprs; ++i) {
SColumnInfoData* pDst = taosArrayGet(pRes->pDataBlock, i);
SExprInfo* pExprInfo = &pOperator->pExpr[i];
int32_t blockId = pExprInfo->base.pParam[0].pCol->dataBlockId;
int32_t slotId = pExprInfo->base.pParam[0].pCol->slotId;
int32_t rowIndex = -1;
SColumnInfoData* pSrc = NULL;
if (pJoinInfo->pLeft->info.blockId == blockId) {
pSrc = taosArrayGet(pJoinInfo->pLeft->pDataBlock, slotId);
rowIndex = pJoinInfo->leftPos;
} else {
pSrc = taosArrayGet(pJoinInfo->pRight->pDataBlock, slotId);
rowIndex = pJoinInfo->rightPos;
}
if (colDataIsNull_s(pSrc, rowIndex)) {
colDataAppendNULL(pDst, nrows);
} else {
char* p = colDataGetData(pSrc, rowIndex);
colDataAppend(pDst, nrows, p, false);
}
}
pJoinInfo->leftPos += 1;
pJoinInfo->rightPos += 1;
nrows += 1;
} else if (*(int64_t*)pLeftVal < *(int64_t*)pRightVal) {
pJoinInfo->leftPos += 1;
if (pJoinInfo->leftPos >= pJoinInfo->pLeft->info.rows) {
continue;
}
} else if (*(int64_t*)pLeftVal > *(int64_t*)pRightVal) {
pJoinInfo->rightPos += 1;
if (pJoinInfo->rightPos >= pJoinInfo->pRight->info.rows) {
continue;
}
}
// the pDataBlock are always the same one, no need to call this again
pRes->info.rows = nrows;
if (pRes->info.rows >= pOperator->resultInfo.threshold) {
break;
}
}
return (pRes->info.rows > 0) ? pRes : NULL;
}
SOperatorInfo* createMergeJoinOperatorInfo(SOperatorInfo** pDownstream, int32_t numOfDownstream, SExprInfo* pExprInfo,
int32_t numOfCols, SSDataBlock* pResBlock, SNode* pOnCondition,
SExecTaskInfo* pTaskInfo) {
SJoinOperatorInfo* pInfo = taosMemoryCalloc(1, sizeof(SJoinOperatorInfo));
SOperatorInfo* pOperator = taosMemoryCalloc(1, sizeof(SOperatorInfo));
if (pOperator == NULL || pInfo == NULL) {
goto _error;
}
initResultSizeInfo(pOperator, 4096);
pInfo->pRes = pResBlock;
pOperator->name = "MergeJoinOperator";
pOperator->operatorType = QUERY_NODE_PHYSICAL_PLAN_JOIN;
pOperator->blocking = false;
pOperator->status = OP_NOT_OPENED;
pOperator->pExpr = pExprInfo;
pOperator->numOfExprs = numOfCols;
pOperator->info = pInfo;
pOperator->pTaskInfo = pTaskInfo;
SOperatorNode* pNode = (SOperatorNode*)pOnCondition;
setJoinColumnInfo(&pInfo->leftCol, (SColumnNode*)pNode->pLeft);
setJoinColumnInfo(&pInfo->rightCol, (SColumnNode*)pNode->pRight);
pOperator->fpSet =
createOperatorFpSet(operatorDummyOpenFn, doMergeJoin, NULL, NULL, destroyMergeJoinOperator, NULL, NULL, NULL);
int32_t code = appendDownstream(pOperator, pDownstream, numOfDownstream);
if (code != TSDB_CODE_SUCCESS) {
goto _error;
}
return pOperator;
_error:
taosMemoryFree(pInfo);
taosMemoryFree(pOperator);
pTaskInfo->code = TSDB_CODE_OUT_OF_MEMORY;
return NULL;
}
void setJoinColumnInfo(SColumnInfo* pColumn, const SColumnNode* pColumnNode) {
pColumn->slotId = pColumnNode->slotId;
pColumn->type = pColumnNode->node.resType.type;
pColumn->bytes = pColumnNode->node.resType.bytes;
pColumn->precision = pColumnNode->node.resType.precision;
pColumn->scale = pColumnNode->node.resType.scale;
}
source/libs/executor/src/joinoperator.c 0 → 100644
浏览文件 @ 18fcb334
/*
* 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 "function.h"
#include "os.h"
#include "querynodes.h"
#include "tdatablock.h"
#include "tmsg.h"
#include "executorimpl.h"
#include "tcompare.h"
#include "thash.h"
#include "ttypes.h"
static void setJoinColumnInfo(SColumnInfo* pColumn, const SColumnNode* pColumnNode);
static SSDataBlock* doMergeJoin(struct SOperatorInfo* pOperator);
static void destroyMergeJoinOperator(void* param, int32_t numOfOutput);
SOperatorInfo* createMergeJoinOperatorInfo(SOperatorInfo** pDownstream, int32_t numOfDownstream, SExprInfo* pExprInfo,
int32_t numOfCols, SSDataBlock* pResBlock, SNode* pOnCondition,
SExecTaskInfo* pTaskInfo) {
SJoinOperatorInfo* pInfo = taosMemoryCalloc(1, sizeof(SJoinOperatorInfo));
SOperatorInfo* pOperator = taosMemoryCalloc(1, sizeof(SOperatorInfo));
if (pOperator == NULL || pInfo == NULL) {
goto _error;
}
initResultSizeInfo(pOperator, 4096);
pInfo->pRes = pResBlock;
pOperator->name = "MergeJoinOperator";
pOperator->operatorType = QUERY_NODE_PHYSICAL_PLAN_JOIN;
pOperator->blocking = false;
pOperator->status = OP_NOT_OPENED;
pOperator->pExpr = pExprInfo;
pOperator->numOfExprs = numOfCols;
pOperator->info = pInfo;
pOperator->pTaskInfo = pTaskInfo;
if (nodeType(pOnCondition) == QUERY_NODE_OPERATOR) {
SOperatorNode* pNode = (SOperatorNode*)pOnCondition;
setJoinColumnInfo(&pInfo->leftCol, (SColumnNode*)pNode->pLeft);
setJoinColumnInfo(&pInfo->rightCol, (SColumnNode*)pNode->pRight);
} else if (nodeType(pOnCondition) == QUERY_NODE_LOGIC_CONDITION) {
ASSERT(0);
}
pOperator->fpSet =
createOperatorFpSet(operatorDummyOpenFn, doMergeJoin, NULL, NULL, destroyMergeJoinOperator, NULL, NULL, NULL);
int32_t code = appendDownstream(pOperator, pDownstream, numOfDownstream);
if (code != TSDB_CODE_SUCCESS) {
goto _error;
}
return pOperator;
_error:
taosMemoryFree(pInfo);
taosMemoryFree(pOperator);
pTaskInfo->code = TSDB_CODE_OUT_OF_MEMORY;
return NULL;
}
void setJoinColumnInfo(SColumnInfo* pColumn, const SColumnNode* pColumnNode) {
pColumn->slotId = pColumnNode->slotId;
pColumn->type = pColumnNode->node.resType.type;
pColumn->bytes = pColumnNode->node.resType.bytes;
pColumn->precision = pColumnNode->node.resType.precision;
pColumn->scale = pColumnNode->node.resType.scale;
}
void destroyMergeJoinOperator(void* param, int32_t numOfOutput) {
SJoinOperatorInfo* pJoinOperator = (SJoinOperatorInfo*)param;
}
SSDataBlock* doMergeJoin(struct SOperatorInfo* pOperator) {
SJoinOperatorInfo* pJoinInfo = pOperator->info;
SSDataBlock* pRes = pJoinInfo->pRes;
blockDataCleanup(pRes);
blockDataEnsureCapacity(pRes, 4096);
int32_t nrows = 0;
while (1) {
// todo extract method
if (pJoinInfo->pLeft == NULL || pJoinInfo->leftPos >= pJoinInfo->pLeft->info.rows) {
SOperatorInfo* ds1 = pOperator->pDownstream[0];
publishOperatorProfEvent(ds1, QUERY_PROF_BEFORE_OPERATOR_EXEC);
pJoinInfo->pLeft = ds1->fpSet.getNextFn(ds1);
publishOperatorProfEvent(ds1, QUERY_PROF_AFTER_OPERATOR_EXEC);
pJoinInfo->leftPos = 0;
if (pJoinInfo->pLeft == NULL) {
setTaskStatus(pOperator->pTaskInfo, TASK_COMPLETED);
break;
}
}
if (pJoinInfo->pRight == NULL || pJoinInfo->rightPos >= pJoinInfo->pRight->info.rows) {
SOperatorInfo* ds2 = pOperator->pDownstream[1];
publishOperatorProfEvent(ds2, QUERY_PROF_BEFORE_OPERATOR_EXEC);
pJoinInfo->pRight = ds2->fpSet.getNextFn(ds2);
publishOperatorProfEvent(ds2, QUERY_PROF_AFTER_OPERATOR_EXEC);
pJoinInfo->rightPos = 0;
if (pJoinInfo->pRight == NULL) {
setTaskStatus(pOperator->pTaskInfo, TASK_COMPLETED);
break;
}
}
SColumnInfoData* pLeftCol = taosArrayGet(pJoinInfo->pLeft->pDataBlock, pJoinInfo->leftCol.slotId);
char* pLeftVal = colDataGetData(pLeftCol, pJoinInfo->leftPos);
SColumnInfoData* pRightCol = taosArrayGet(pJoinInfo->pRight->pDataBlock, pJoinInfo->rightCol.slotId);
char* pRightVal = colDataGetData(pRightCol, pJoinInfo->rightPos);
// only the timestamp match support for ordinary table
ASSERT(pLeftCol->info.type == TSDB_DATA_TYPE_TIMESTAMP);
if (*(int64_t*)pLeftVal == *(int64_t*)pRightVal) {
for (int32_t i = 0; i < pOperator->numOfExprs; ++i) {
SColumnInfoData* pDst = taosArrayGet(pRes->pDataBlock, i);
SExprInfo* pExprInfo = &pOperator->pExpr[i];
int32_t blockId = pExprInfo->base.pParam[0].pCol->dataBlockId;
int32_t slotId = pExprInfo->base.pParam[0].pCol->slotId;
int32_t rowIndex = -1;
SColumnInfoData* pSrc = NULL;
if (pJoinInfo->pLeft->info.blockId == blockId) {
pSrc = taosArrayGet(pJoinInfo->pLeft->pDataBlock, slotId);
rowIndex = pJoinInfo->leftPos;
} else {
pSrc = taosArrayGet(pJoinInfo->pRight->pDataBlock, slotId);
rowIndex = pJoinInfo->rightPos;
}
if (colDataIsNull_s(pSrc, rowIndex)) {
colDataAppendNULL(pDst, nrows);
} else {
char* p = colDataGetData(pSrc, rowIndex);
colDataAppend(pDst, nrows, p, false);
}
}
pJoinInfo->leftPos += 1;
pJoinInfo->rightPos += 1;
nrows += 1;
} else if (*(int64_t*)pLeftVal < *(int64_t*)pRightVal) {
pJoinInfo->leftPos += 1;
if (pJoinInfo->leftPos >= pJoinInfo->pLeft->info.rows) {
continue;
}
} else if (*(int64_t*)pLeftVal > *(int64_t*)pRightVal) {
pJoinInfo->rightPos += 1;
if (pJoinInfo->rightPos >= pJoinInfo->pRight->info.rows) {
continue;
}
}
// the pDataBlock are always the same one, no need to call this again
pRes->info.rows = nrows;
if (pRes->info.rows >= pOperator->resultInfo.threshold) {
break;
}
}
return (pRes->info.rows > 0) ? pRes : NULL;
}
source/libs/executor/src/timewindowoperator.c
浏览文件 @ 18fcb334
......@@ -773,7 +773,6 @@ static int32_t doOpenIntervalAgg(SOperatorInfo* pOperator) {
break;
}
// setTagValue(pOperator, pRuntimeEnv->current->pTable, pInfo->pCtx, pOperator->numOfExprs);
// the pDataBlock are always the same one, no need to call this again
setInputDataBlock(pOperator, pInfo->binfo.pCtx, pBlock, order, MAIN_SCAN, true);
STableQueryInfo* pTableQueryInfo = pInfo->pCurrent;
......@@ -1062,8 +1061,6 @@ static SSDataBlock* doStreamIntervalAgg(SOperatorInfo* pOperator) {
// The timewindows that overlaps the timestamps of the input pBlock need to be recalculated and return to the
// caller. Note that all the time window are not close till now.
// setTagValue(pOperator, pRuntimeEnv->current->pTable, pInfo->pCtx, pOperator->numOfExprs);
// the pDataBlock are always the same one, no need to call this again
setInputDataBlock(pOperator, pInfo->binfo.pCtx, pBlock, order, MAIN_SCAN, true);
if (pInfo->invertible) {
......@@ -1377,7 +1374,6 @@ static SSDataBlock* doAllIntervalAgg(SOperatorInfo* pOperator) {
break;
}
// setTagValue(pOperator, pRuntimeEnv->current->pTable, pIntervalInfo->pCtx, pOperator->numOfExprs);
// the pDataBlock are always the same one, no need to call this again
setInputDataBlock(pOperator, pSliceInfo->binfo.pCtx, pBlock, order, MAIN_SCAN, true);
// hashAllIntervalAgg(pOperator, &pSliceInfo->binfo.resultRowInfo, pBlock, 0);
......
Markdown is supported
0% 或 .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑！
想要评论请 注册 或