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aggregate function call from udfd

This commit is contained in:
shenglian zhou 2022-04-28 11:12:45 +08:00
parent 974c679c84
commit 0119054b0b
2 changed files with 80 additions and 30 deletions
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4
include/libs/function/tudf.h
View File

@ -139,9 +139,9 @@ typedef int32_t (*TUdfTeardownFunc)();
typedef int32_t (*TUdfFreeUdfColumnFunc)(SUdfColumn* column);
typedef int32_t (*TUdfScalarProcFunc)(SUdfDataBlock* block, SUdfColumn *resultCol);
typedef int32_t (*TUdfAggInitFunc)(SUdfInterBuf *buf);
typedef int32_t (*TUdfAggStartFunc)(SUdfInterBuf *buf);
typedef int32_t (*TUdfAggProcessFunc)(SUdfDataBlock* block, SUdfInterBuf *interBuf);
typedef int32_t (*TUdfAggFinalizeFunc)(SUdfInterBuf* buf, SUdfInterBuf *resultData);
typedef int32_t (*TUdfAggFinishFunc)(SUdfInterBuf* buf, SUdfInterBuf *resultData);
// end API to UDF writer

106
source/libs/function/src/udfd.c
View File

@ -77,6 +77,10 @@ typedef struct SUdf {
uv_lib_t lib;
TUdfScalarProcFunc scalarProcFunc;
TUdfFreeUdfColumnFunc freeUdfColumn;
TUdfAggStartFunc aggStartFunc;
TUdfAggProcessFunc aggProcFunc;
TUdfAggFinishFunc aggFinishFunc;
} SUdf;
// TODO: low priority: change name onxxx to xxxCb, and udfc or udfd as prefix
@ -97,15 +101,32 @@ int32_t udfdLoadUdf(char *udfName, SUdf *udf) {
fnError("can not load library %s. error: %s", udf->path, uv_strerror(err));
return UDFC_CODE_LOAD_UDF_FAILURE;
}
// TODO: find all the functions
char normalFuncName[TSDB_FUNC_NAME_LEN] = {0};
strcpy(normalFuncName, udfName);
uv_dlsym(&udf->lib, normalFuncName, (void **)(&udf->scalarProcFunc));
char freeFuncName[TSDB_FUNC_NAME_LEN + 6] = {0};
char *freeSuffix = "_free";
strncpy(freeFuncName, normalFuncName, strlen(normalFuncName));
strncat(freeFuncName, freeSuffix, strlen(freeSuffix));
uv_dlsym(&udf->lib, freeFuncName, (void **)(&udf->freeUdfColumn));
//TODO: init and destroy function
if (udf->funcType == TSDB_FUNC_TYPE_SCALAR) {
char processFuncName[TSDB_FUNC_NAME_LEN] = {0};
strcpy(processFuncName, udfName);
uv_dlsym(&udf->lib, processFuncName, (void **)(&udf->scalarProcFunc));
char freeFuncName[TSDB_FUNC_NAME_LEN + 5] = {0};
char *freeSuffix = "_free";
strncpy(freeFuncName, processFuncName, strlen(processFuncName));
strncat(freeFuncName, freeSuffix, strlen(freeSuffix));
uv_dlsym(&udf->lib, freeFuncName, (void **)(&udf->freeUdfColumn));
} else if (udf->funcType == TSDB_FUNC_TYPE_AGGREGATE) {
char processFuncName[TSDB_FUNC_NAME_LEN] = {0};
strcpy(processFuncName, udfName);
uv_dlsym(&udf->lib, processFuncName, (void **)(&udf->aggProcFunc));
char startFuncName[TSDB_FUNC_NAME_LEN + 6] = {0};
char *startSuffix = "_start";
strncpy(startFuncName, processFuncName, strlen(processFuncName));
strncat(startFuncName, startSuffix, strlen(startSuffix));
uv_dlsym(&udf->lib, startFuncName, (void **)(&udf->aggStartFunc));
char finishFuncName[TSDB_FUNC_NAME_LEN + 7] = {0};
char *finishSuffix = "_finish";
strncpy(finishFuncName, processFuncName, strlen(processFuncName));
strncat(finishFuncName, finishSuffix, strlen(finishSuffix));
uv_dlsym(&udf->lib, startFuncName, (void **)(&udf->aggFinishFunc));
//TODO: merge
}
return 0;
}
@ -181,26 +202,58 @@ void udfdProcessRequest(uv_work_t *req) {
call->udfHandle);
SUdfcFuncHandle *handle = (SUdfcFuncHandle *)(call->udfHandle);
SUdf *udf = handle->udf;
SUdfDataBlock input = {0};
convertDataBlockToUdfDataBlock(&call->block, &input);
SUdfColumn output = {0};
// TODO: call different functions according to call type, for now just calar
if (call->callType == TSDB_UDF_CALL_SCALA_PROC) {
udf->scalarProcFunc(&input, &output);
}
SUdfResponse response = {0};
SUdfResponse *rsp = &response;
if (call->callType == TSDB_UDF_CALL_SCALA_PROC) {
rsp->seqNum = request.seqNum;
rsp->type = request.type;
rsp->code = 0;
SUdfCallResponse *subRsp = &rsp->callRsp;
subRsp->callType = call->callType;
convertUdfColumnToDataBlock(&output, &subRsp->resultData);
SUdfCallResponse *subRsp = &rsp->callRsp;
switch(call->callType) {
case TSDB_UDF_CALL_SCALA_PROC: {
SUdfColumn output = {0};
SUdfDataBlock input = {0};
convertDataBlockToUdfDataBlock(&call->block, &input);
udf->scalarProcFunc(&input, &output);
convertUdfColumnToDataBlock(&output, &response.callRsp.resultData);
udf->freeUdfColumn(&output);
break;
}
case TSDB_UDF_CALL_AGG_INIT: {
SUdfInterBuf outBuf = {.buf = taosMemoryMalloc(udf->bufSize),
.bufLen= udf->bufSize,
.numOfResult = 0};
udf->aggStartFunc(&outBuf);
subRsp->resultBuf = outBuf;
break;
}
case TSDB_UDF_CALL_AGG_PROC: {
SUdfDataBlock input = {0};
convertDataBlockToUdfDataBlock(&call->block, &input);
SUdfInterBuf outBuf = {.buf = taosMemoryMalloc(udf->bufSize),
.bufLen= udf->bufSize,
.numOfResult = 0};
udf->aggProcFunc(&input, &outBuf);
subRsp->resultBuf = outBuf;
break;
}
case TSDB_UDF_CALL_AGG_FIN: {
SUdfInterBuf outBuf = {.buf = taosMemoryMalloc(udf->bufSize),
.bufLen= udf->bufSize,
.numOfResult = 0};
udf->aggFinishFunc(&call->interBuf, &outBuf);
subRsp->resultBuf = outBuf;
break;
}
default:
break;
}
rsp->seqNum = request.seqNum;
rsp->type = request.type;
rsp->code = 0;
subRsp->callType = call->callType;
int32_t len = encodeUdfResponse(NULL, rsp);
rsp->msgLen = len;
void *bufBegin = taosMemoryMalloc(len);
@ -208,9 +261,6 @@ void udfdProcessRequest(uv_work_t *req) {
encodeUdfResponse(&buf, rsp);
uvUdf->output = uv_buf_init(bufBegin, len);
// TODO: free udf column
udf->freeUdfColumn(&output);
taosMemoryFree(uvUdf->input.base);
break;
}