/* * Copyright (c) 2019 TAOS Data, Inc. * * 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 . */ #include "uv.h" #include "os.h" #include "builtinsimpl.h" #include "fnLog.h" #include "functionMgt.h" #include "querynodes.h" #include "tarray.h" #include "tdatablock.h" #include "tglobal.h" #include "tudf.h" #include "tudfInt.h" typedef struct SUdfdData { bool startCalled; bool needCleanUp; uv_loop_t loop; uv_thread_t thread; uv_barrier_t barrier; uv_process_t process; #ifdef WINDOWS HANDLE jobHandle; #endif int spawnErr; uv_pipe_t ctrlPipe; uv_async_t stopAsync; int32_t stopCalled; int32_t dnodeId; } SUdfdData; SUdfdData udfdGlobal = {0}; int32_t udfStartUdfd(int32_t startDnodeId); int32_t udfStopUdfd(); static int32_t udfSpawnUdfd(SUdfdData *pData); void udfUdfdExit(uv_process_t *process, int64_t exitStatus, int termSignal); static int32_t udfSpawnUdfd(SUdfdData *pData); static void udfUdfdCloseWalkCb(uv_handle_t *handle, void *arg); static void udfUdfdStopAsyncCb(uv_async_t *async); static void udfWatchUdfd(void *args); void udfUdfdExit(uv_process_t *process, int64_t exitStatus, int termSignal) { fnInfo("udfd process exited with status %" PRId64 ", signal %d", exitStatus, termSignal); SUdfdData *pData = process->data; if (exitStatus == 0 && termSignal == 0 || atomic_load_32(&pData->stopCalled)) { fnInfo("udfd process exit due to SIGINT or dnode-mgmt called stop"); } else { fnInfo("udfd process restart"); udfSpawnUdfd(pData); } } static int32_t udfSpawnUdfd(SUdfdData *pData) { fnInfo("start to init udfd"); uv_process_options_t options = {0}; char path[PATH_MAX] = {0}; if (tsProcPath == NULL) { path[0] = '.'; #ifdef WINDOWS GetModuleFileName(NULL, path, PATH_MAX); taosDirName(path); #elif defined(_TD_DARWIN_64) uint32_t pathSize = sizeof(path); _NSGetExecutablePath(path, &pathSize); taosDirName(path); #endif } else { strncpy(path, tsProcPath, PATH_MAX); taosDirName(path); } #ifdef WINDOWS if (strlen(path) == 0) { strcat(path, "C:\\TDengine"); } strcat(path, "\\udfd.exe"); #else if (strlen(path) == 0) { strcat(path, "/usr/bin"); } strcat(path, "/udfd"); #endif char *argsUdfd[] = {path, "-c", configDir, NULL}; options.args = argsUdfd; options.file = path; options.exit_cb = udfUdfdExit; uv_pipe_init(&pData->loop, &pData->ctrlPipe, 1); uv_stdio_container_t child_stdio[3]; child_stdio[0].flags = UV_CREATE_PIPE | UV_READABLE_PIPE; child_stdio[0].data.stream = (uv_stream_t *)&pData->ctrlPipe; child_stdio[1].flags = UV_IGNORE; child_stdio[2].flags = UV_INHERIT_FD; child_stdio[2].data.fd = 2; options.stdio_count = 3; options.stdio = child_stdio; options.flags = UV_PROCESS_DETACHED; char dnodeIdEnvItem[32] = {0}; char thrdPoolSizeEnvItem[32] = {0}; snprintf(dnodeIdEnvItem, 32, "%s=%d", "DNODE_ID", pData->dnodeId); float numCpuCores = 4; taosGetCpuCores(&numCpuCores); snprintf(thrdPoolSizeEnvItem, 32, "%s=%d", "UV_THREADPOOL_SIZE", (int)numCpuCores * 2); char pathTaosdLdLib[512] = {0}; size_t taosdLdLibPathLen = sizeof(pathTaosdLdLib); int ret = uv_os_getenv("LD_LIBRARY_PATH", pathTaosdLdLib, &taosdLdLibPathLen); if (ret != UV_ENOBUFS) { taosdLdLibPathLen = strlen(pathTaosdLdLib); } char udfdPathLdLib[1024] = {0}; size_t udfdLdLibPathLen = strlen(tsUdfdLdLibPath); strncpy(udfdPathLdLib, tsUdfdLdLibPath, tListLen(udfdPathLdLib)); udfdPathLdLib[udfdLdLibPathLen] = ':'; strncpy(udfdPathLdLib + udfdLdLibPathLen + 1, pathTaosdLdLib, sizeof(udfdPathLdLib) - udfdLdLibPathLen - 1); if (udfdLdLibPathLen + taosdLdLibPathLen < 1024) { fnInfo("udfd LD_LIBRARY_PATH: %s", udfdPathLdLib); } else { fnError("can not set correct udfd LD_LIBRARY_PATH"); } char ldLibPathEnvItem[1024 + 32] = {0}; snprintf(ldLibPathEnvItem, 1024 + 32, "%s=%s", "LD_LIBRARY_PATH", udfdPathLdLib); char *envUdfd[] = {dnodeIdEnvItem, thrdPoolSizeEnvItem, ldLibPathEnvItem, NULL}; options.env = envUdfd; int err = uv_spawn(&pData->loop, &pData->process, &options); pData->process.data = (void *)pData; #ifdef WINDOWS // End udfd.exe by Job. if (pData->jobHandle != NULL) CloseHandle(pData->jobHandle); pData->jobHandle = CreateJobObject(NULL, NULL); bool add_job_ok = AssignProcessToJobObject(pData->jobHandle, pData->process.process_handle); if (!add_job_ok) { fnError("Assign udfd to job failed."); } else { JOBOBJECT_EXTENDED_LIMIT_INFORMATION limit_info; memset(&limit_info, 0x0, sizeof(limit_info)); limit_info.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE; bool set_auto_kill_ok = SetInformationJobObject(pData->jobHandle, JobObjectExtendedLimitInformation, &limit_info, sizeof(limit_info)); if (!set_auto_kill_ok) { fnError("Set job auto kill udfd failed."); } } #endif if (err != 0) { fnError("can not spawn udfd. path: %s, error: %s", path, uv_strerror(err)); } else { fnInfo("udfd is initialized"); } return err; } static void udfUdfdCloseWalkCb(uv_handle_t *handle, void *arg) { if (!uv_is_closing(handle)) { uv_close(handle, NULL); } } static void udfUdfdStopAsyncCb(uv_async_t *async) { SUdfdData *pData = async->data; uv_stop(&pData->loop); } static void udfWatchUdfd(void *args) { SUdfdData *pData = args; uv_loop_init(&pData->loop); uv_async_init(&pData->loop, &pData->stopAsync, udfUdfdStopAsyncCb); pData->stopAsync.data = pData; int32_t err = udfSpawnUdfd(pData); atomic_store_32(&pData->spawnErr, err); uv_barrier_wait(&pData->barrier); uv_run(&pData->loop, UV_RUN_DEFAULT); uv_loop_close(&pData->loop); uv_walk(&pData->loop, udfUdfdCloseWalkCb, NULL); uv_run(&pData->loop, UV_RUN_DEFAULT); uv_loop_close(&pData->loop); return; } int32_t udfStartUdfd(int32_t startDnodeId) { if (!tsStartUdfd) { fnInfo("start udfd is disabled.") return 0; } SUdfdData *pData = &udfdGlobal; if (pData->startCalled) { fnInfo("dnode start udfd already called"); return 0; } pData->startCalled = true; char dnodeId[8] = {0}; snprintf(dnodeId, sizeof(dnodeId), "%d", startDnodeId); uv_os_setenv("DNODE_ID", dnodeId); pData->dnodeId = startDnodeId; uv_barrier_init(&pData->barrier, 2); uv_thread_create(&pData->thread, udfWatchUdfd, pData); uv_barrier_wait(&pData->barrier); int32_t err = atomic_load_32(&pData->spawnErr); if (err != 0) { uv_barrier_destroy(&pData->barrier); uv_async_send(&pData->stopAsync); uv_thread_join(&pData->thread); pData->needCleanUp = false; fnInfo("udfd is cleaned up after spawn err"); } else { pData->needCleanUp = true; } return err; } int32_t udfStopUdfd() { SUdfdData *pData = &udfdGlobal; fnInfo("udfd start to stop, need cleanup:%d, spawn err:%d", pData->needCleanUp, pData->spawnErr); if (!pData->needCleanUp || atomic_load_32(&pData->stopCalled)) { return 0; } atomic_store_32(&pData->stopCalled, 1); pData->needCleanUp = false; uv_barrier_destroy(&pData->barrier); uv_async_send(&pData->stopAsync); uv_thread_join(&pData->thread); #ifdef WINDOWS if (pData->jobHandle != NULL) CloseHandle(pData->jobHandle); #endif fnInfo("udfd is cleaned up"); return 0; } //============================================================================================== /* Copyright (c) 2013, Ben Noordhuis * The QUEUE is copied from queue.h under libuv * */ typedef void *QUEUE[2]; /* Private macros. */ #define QUEUE_NEXT(q) (*(QUEUE **)&((*(q))[0])) #define QUEUE_PREV(q) (*(QUEUE **)&((*(q))[1])) #define QUEUE_PREV_NEXT(q) (QUEUE_NEXT(QUEUE_PREV(q))) #define QUEUE_NEXT_PREV(q) (QUEUE_PREV(QUEUE_NEXT(q))) /* Public macros. */ #define QUEUE_DATA(ptr, type, field) ((type *)((char *)(ptr)-offsetof(type, field))) /* Important note: mutating the list while QUEUE_FOREACH is * iterating over its elements results in undefined behavior. */ #define QUEUE_FOREACH(q, h) for ((q) = QUEUE_NEXT(h); (q) != (h); (q) = QUEUE_NEXT(q)) #define QUEUE_EMPTY(q) ((const QUEUE *)(q) == (const QUEUE *)QUEUE_NEXT(q)) #define QUEUE_HEAD(q) (QUEUE_NEXT(q)) #define QUEUE_INIT(q) \ do { \ QUEUE_NEXT(q) = (q); \ QUEUE_PREV(q) = (q); \ } while (0) #define QUEUE_ADD(h, n) \ do { \ QUEUE_PREV_NEXT(h) = QUEUE_NEXT(n); \ QUEUE_NEXT_PREV(n) = QUEUE_PREV(h); \ QUEUE_PREV(h) = QUEUE_PREV(n); \ QUEUE_PREV_NEXT(h) = (h); \ } while (0) #define QUEUE_SPLIT(h, q, n) \ do { \ QUEUE_PREV(n) = QUEUE_PREV(h); \ QUEUE_PREV_NEXT(n) = (n); \ QUEUE_NEXT(n) = (q); \ QUEUE_PREV(h) = QUEUE_PREV(q); \ QUEUE_PREV_NEXT(h) = (h); \ QUEUE_PREV(q) = (n); \ } while (0) #define QUEUE_MOVE(h, n) \ do { \ if (QUEUE_EMPTY(h)) \ QUEUE_INIT(n); \ else { \ QUEUE *q = QUEUE_HEAD(h); \ QUEUE_SPLIT(h, q, n); \ } \ } while (0) #define QUEUE_INSERT_HEAD(h, q) \ do { \ QUEUE_NEXT(q) = QUEUE_NEXT(h); \ QUEUE_PREV(q) = (h); \ QUEUE_NEXT_PREV(q) = (q); \ QUEUE_NEXT(h) = (q); \ } while (0) #define QUEUE_INSERT_TAIL(h, q) \ do { \ QUEUE_NEXT(q) = (h); \ QUEUE_PREV(q) = QUEUE_PREV(h); \ QUEUE_PREV_NEXT(q) = (q); \ QUEUE_PREV(h) = (q); \ } while (0) #define QUEUE_REMOVE(q) \ do { \ QUEUE_PREV_NEXT(q) = QUEUE_NEXT(q); \ QUEUE_NEXT_PREV(q) = QUEUE_PREV(q); \ } while (0) enum { UV_TASK_CONNECT = 0, UV_TASK_REQ_RSP = 1, UV_TASK_DISCONNECT = 2 }; int64_t gUdfTaskSeqNum = 0; typedef struct SUdfcFuncStub { char udfName[TSDB_FUNC_NAME_LEN + 1]; UdfcFuncHandle handle; int32_t refCount; int64_t lastRefTime; } SUdfcFuncStub; typedef struct SUdfcProxy { char udfdPipeName[PATH_MAX + UDF_LISTEN_PIPE_NAME_LEN + 2]; uv_barrier_t initBarrier; uv_loop_t uvLoop; uv_thread_t loopThread; uv_async_t loopTaskAync; uv_async_t loopStopAsync; uv_mutex_t taskQueueMutex; int8_t udfcState; QUEUE taskQueue; QUEUE uvProcTaskQueue; uv_mutex_t udfStubsMutex; SArray *udfStubs; // SUdfcFuncStub uv_mutex_t udfcUvMutex; int8_t initialized; } SUdfcProxy; SUdfcProxy gUdfcProxy = {0}; typedef struct SUdfcUvSession { SUdfcProxy *udfc; int64_t severHandle; uv_pipe_t *udfUvPipe; int8_t outputType; int32_t outputLen; int32_t bufSize; char udfName[TSDB_FUNC_NAME_LEN + 1]; } SUdfcUvSession; typedef struct SClientUvTaskNode { SUdfcProxy *udfc; int8_t type; int errCode; uv_pipe_t *pipe; int64_t seqNum; uv_buf_t reqBuf; uv_sem_t taskSem; uv_buf_t rspBuf; QUEUE recvTaskQueue; QUEUE procTaskQueue; QUEUE connTaskQueue; } SClientUvTaskNode; typedef struct SClientUdfTask { int8_t type; SUdfcUvSession *session; int32_t errCode; union { struct { SUdfSetupRequest req; SUdfSetupResponse rsp; } _setup; struct { SUdfCallRequest req; SUdfCallResponse rsp; } _call; struct { SUdfTeardownRequest req; SUdfTeardownResponse rsp; } _teardown; }; } SClientUdfTask; typedef struct SClientConnBuf { char *buf; int32_t len; int32_t cap; int32_t total; } SClientConnBuf; typedef struct SClientUvConn { uv_pipe_t *pipe; QUEUE taskQueue; SClientConnBuf readBuf; SUdfcUvSession *session; } SClientUvConn; enum { UDFC_STATE_INITAL = 0, // initial state UDFC_STATE_STARTNG, // starting after udfcOpen UDFC_STATE_READY, // started and begin to receive quests UDFC_STATE_STOPPING, // stopping after udfcClose }; int32_t getUdfdPipeName(char *pipeName, int32_t size); int32_t encodeUdfSetupRequest(void **buf, const SUdfSetupRequest *setup); void *decodeUdfSetupRequest(const void *buf, SUdfSetupRequest *request); int32_t encodeUdfInterBuf(void **buf, const SUdfInterBuf *state); void *decodeUdfInterBuf(const void *buf, SUdfInterBuf *state); int32_t encodeUdfCallRequest(void **buf, const SUdfCallRequest *call); void *decodeUdfCallRequest(const void *buf, SUdfCallRequest *call); int32_t encodeUdfTeardownRequest(void **buf, const SUdfTeardownRequest *teardown); void *decodeUdfTeardownRequest(const void *buf, SUdfTeardownRequest *teardown); int32_t encodeUdfRequest(void **buf, const SUdfRequest *request); void *decodeUdfRequest(const void *buf, SUdfRequest *request); int32_t encodeUdfSetupResponse(void **buf, const SUdfSetupResponse *setupRsp); void *decodeUdfSetupResponse(const void *buf, SUdfSetupResponse *setupRsp); int32_t encodeUdfCallResponse(void **buf, const SUdfCallResponse *callRsp); void *decodeUdfCallResponse(const void *buf, SUdfCallResponse *callRsp); int32_t encodeUdfTeardownResponse(void **buf, const SUdfTeardownResponse *teardownRsp); void *decodeUdfTeardownResponse(const void *buf, SUdfTeardownResponse *teardownResponse); int32_t encodeUdfResponse(void **buf, const SUdfResponse *rsp); void *decodeUdfResponse(const void *buf, SUdfResponse *rsp); void freeUdfColumnData(SUdfColumnData *data, SUdfColumnMeta *meta); void freeUdfColumn(SUdfColumn *col); void freeUdfDataDataBlock(SUdfDataBlock *block); void freeUdfInterBuf(SUdfInterBuf *buf); int32_t convertDataBlockToUdfDataBlock(SSDataBlock *block, SUdfDataBlock *udfBlock); int32_t convertUdfColumnToDataBlock(SUdfColumn *udfCol, SSDataBlock *block); int32_t convertScalarParamToDataBlock(SScalarParam *input, int32_t numOfCols, SSDataBlock *output); int32_t convertDataBlockToScalarParm(SSDataBlock *input, SScalarParam *output); int32_t getUdfdPipeName(char *pipeName, int32_t size) { char dnodeId[8] = {0}; size_t dnodeIdSize = sizeof(dnodeId); int32_t err = uv_os_getenv(UDF_DNODE_ID_ENV_NAME, dnodeId, &dnodeIdSize); if (err != 0) { fnError("failed to get dnodeId from env since %s", uv_err_name(err)); dnodeId[0] = '1'; } #ifdef _WIN32 snprintf(pipeName, size, "%s.%x.%s", UDF_LISTEN_PIPE_NAME_PREFIX, MurmurHash3_32(tsDataDir, strlen(tsDataDir)), dnodeId); #else snprintf(pipeName, size, "%s/%s%s", tsDataDir, UDF_LISTEN_PIPE_NAME_PREFIX, dnodeId); #endif fnInfo("get dnodeId:%s from env, pipe path:%s", dnodeId, pipeName); return 0; } int32_t encodeUdfSetupRequest(void **buf, const SUdfSetupRequest *setup) { int32_t len = 0; len += taosEncodeBinary(buf, setup->udfName, TSDB_FUNC_NAME_LEN); return len; } void *decodeUdfSetupRequest(const void *buf, SUdfSetupRequest *request) { buf = taosDecodeBinaryTo(buf, request->udfName, TSDB_FUNC_NAME_LEN); return (void *)buf; } int32_t encodeUdfInterBuf(void **buf, const SUdfInterBuf *state) { int32_t len = 0; len += taosEncodeFixedI8(buf, state->numOfResult); len += taosEncodeFixedI32(buf, state->bufLen); len += taosEncodeBinary(buf, state->buf, state->bufLen); return len; } void *decodeUdfInterBuf(const void *buf, SUdfInterBuf *state) { buf = taosDecodeFixedI8(buf, &state->numOfResult); buf = taosDecodeFixedI32(buf, &state->bufLen); buf = taosDecodeBinary(buf, (void **)&state->buf, state->bufLen); return (void *)buf; } int32_t encodeUdfCallRequest(void **buf, const SUdfCallRequest *call) { int32_t len = 0; len += taosEncodeFixedI64(buf, call->udfHandle); len += taosEncodeFixedI8(buf, call->callType); if (call->callType == TSDB_UDF_CALL_SCALA_PROC) { len += tEncodeDataBlock(buf, &call->block); } else if (call->callType == TSDB_UDF_CALL_AGG_INIT) { len += taosEncodeFixedI8(buf, call->initFirst); } else if (call->callType == TSDB_UDF_CALL_AGG_PROC) { len += tEncodeDataBlock(buf, &call->block); len += encodeUdfInterBuf(buf, &call->interBuf); } else if (call->callType == TSDB_UDF_CALL_AGG_MERGE) { len += encodeUdfInterBuf(buf, &call->interBuf); len += encodeUdfInterBuf(buf, &call->interBuf2); } else if (call->callType == TSDB_UDF_CALL_AGG_FIN) { len += encodeUdfInterBuf(buf, &call->interBuf); } return len; } void *decodeUdfCallRequest(const void *buf, SUdfCallRequest *call) { buf = taosDecodeFixedI64(buf, &call->udfHandle); buf = taosDecodeFixedI8(buf, &call->callType); switch (call->callType) { case TSDB_UDF_CALL_SCALA_PROC: buf = tDecodeDataBlock(buf, &call->block); break; case TSDB_UDF_CALL_AGG_INIT: buf = taosDecodeFixedI8(buf, &call->initFirst); break; case TSDB_UDF_CALL_AGG_PROC: buf = tDecodeDataBlock(buf, &call->block); buf = decodeUdfInterBuf(buf, &call->interBuf); break; case TSDB_UDF_CALL_AGG_MERGE: buf = decodeUdfInterBuf(buf, &call->interBuf); buf = decodeUdfInterBuf(buf, &call->interBuf2); break; case TSDB_UDF_CALL_AGG_FIN: buf = decodeUdfInterBuf(buf, &call->interBuf); break; } return (void *)buf; } int32_t encodeUdfTeardownRequest(void **buf, const SUdfTeardownRequest *teardown) { int32_t len = 0; len += taosEncodeFixedI64(buf, teardown->udfHandle); return len; } void *decodeUdfTeardownRequest(const void *buf, SUdfTeardownRequest *teardown) { buf = taosDecodeFixedI64(buf, &teardown->udfHandle); return (void *)buf; } int32_t encodeUdfRequest(void **buf, const SUdfRequest *request) { int32_t len = 0; if (buf == NULL) { len += sizeof(request->msgLen); } else { *(int32_t *)(*buf) = request->msgLen; *buf = POINTER_SHIFT(*buf, sizeof(request->msgLen)); } len += taosEncodeFixedI64(buf, request->seqNum); len += taosEncodeFixedI8(buf, request->type); if (request->type == UDF_TASK_SETUP) { len += encodeUdfSetupRequest(buf, &request->setup); } else if (request->type == UDF_TASK_CALL) { len += encodeUdfCallRequest(buf, &request->call); } else if (request->type == UDF_TASK_TEARDOWN) { len += encodeUdfTeardownRequest(buf, &request->teardown); } return len; } void *decodeUdfRequest(const void *buf, SUdfRequest *request) { request->msgLen = *(int32_t *)(buf); buf = POINTER_SHIFT(buf, sizeof(request->msgLen)); buf = taosDecodeFixedI64(buf, &request->seqNum); buf = taosDecodeFixedI8(buf, &request->type); if (request->type == UDF_TASK_SETUP) { buf = decodeUdfSetupRequest(buf, &request->setup); } else if (request->type == UDF_TASK_CALL) { buf = decodeUdfCallRequest(buf, &request->call); } else if (request->type == UDF_TASK_TEARDOWN) { buf = decodeUdfTeardownRequest(buf, &request->teardown); } return (void *)buf; } int32_t encodeUdfSetupResponse(void **buf, const SUdfSetupResponse *setupRsp) { int32_t len = 0; len += taosEncodeFixedI64(buf, setupRsp->udfHandle); len += taosEncodeFixedI8(buf, setupRsp->outputType); len += taosEncodeFixedI32(buf, setupRsp->outputLen); len += taosEncodeFixedI32(buf, setupRsp->bufSize); return len; } void *decodeUdfSetupResponse(const void *buf, SUdfSetupResponse *setupRsp) { buf = taosDecodeFixedI64(buf, &setupRsp->udfHandle); buf = taosDecodeFixedI8(buf, &setupRsp->outputType); buf = taosDecodeFixedI32(buf, &setupRsp->outputLen); buf = taosDecodeFixedI32(buf, &setupRsp->bufSize); return (void *)buf; } int32_t encodeUdfCallResponse(void **buf, const SUdfCallResponse *callRsp) { int32_t len = 0; len += taosEncodeFixedI8(buf, callRsp->callType); switch (callRsp->callType) { case TSDB_UDF_CALL_SCALA_PROC: len += tEncodeDataBlock(buf, &callRsp->resultData); break; case TSDB_UDF_CALL_AGG_INIT: len += encodeUdfInterBuf(buf, &callRsp->resultBuf); break; case TSDB_UDF_CALL_AGG_PROC: len += encodeUdfInterBuf(buf, &callRsp->resultBuf); break; case TSDB_UDF_CALL_AGG_MERGE: len += encodeUdfInterBuf(buf, &callRsp->resultBuf); break; case TSDB_UDF_CALL_AGG_FIN: len += encodeUdfInterBuf(buf, &callRsp->resultBuf); break; } return len; } void *decodeUdfCallResponse(const void *buf, SUdfCallResponse *callRsp) { buf = taosDecodeFixedI8(buf, &callRsp->callType); switch (callRsp->callType) { case TSDB_UDF_CALL_SCALA_PROC: buf = tDecodeDataBlock(buf, &callRsp->resultData); break; case TSDB_UDF_CALL_AGG_INIT: buf = decodeUdfInterBuf(buf, &callRsp->resultBuf); break; case TSDB_UDF_CALL_AGG_PROC: buf = decodeUdfInterBuf(buf, &callRsp->resultBuf); break; case TSDB_UDF_CALL_AGG_MERGE: buf = decodeUdfInterBuf(buf, &callRsp->resultBuf); break; case TSDB_UDF_CALL_AGG_FIN: buf = decodeUdfInterBuf(buf, &callRsp->resultBuf); break; } return (void *)buf; } int32_t encodeUdfTeardownResponse(void **buf, const SUdfTeardownResponse *teardownRsp) { return 0; } void *decodeUdfTeardownResponse(const void *buf, SUdfTeardownResponse *teardownResponse) { return (void *)buf; } int32_t encodeUdfResponse(void **buf, const SUdfResponse *rsp) { int32_t len = 0; if (buf == NULL) { len += sizeof(rsp->msgLen); } else { *(int32_t *)(*buf) = rsp->msgLen; *buf = POINTER_SHIFT(*buf, sizeof(rsp->msgLen)); } if (buf == NULL) { len += sizeof(rsp->seqNum); } else { *(int64_t *)(*buf) = rsp->seqNum; *buf = POINTER_SHIFT(*buf, sizeof(rsp->seqNum)); } len += taosEncodeFixedI64(buf, rsp->seqNum); len += taosEncodeFixedI8(buf, rsp->type); len += taosEncodeFixedI32(buf, rsp->code); switch (rsp->type) { case UDF_TASK_SETUP: len += encodeUdfSetupResponse(buf, &rsp->setupRsp); break; case UDF_TASK_CALL: len += encodeUdfCallResponse(buf, &rsp->callRsp); break; case UDF_TASK_TEARDOWN: len += encodeUdfTeardownResponse(buf, &rsp->teardownRsp); break; default: fnError("encode udf response, invalid udf response type %d", rsp->type); break; } return len; } void *decodeUdfResponse(const void *buf, SUdfResponse *rsp) { rsp->msgLen = *(int32_t *)(buf); buf = POINTER_SHIFT(buf, sizeof(rsp->msgLen)); rsp->seqNum = *(int64_t *)(buf); buf = POINTER_SHIFT(buf, sizeof(rsp->seqNum)); buf = taosDecodeFixedI64(buf, &rsp->seqNum); buf = taosDecodeFixedI8(buf, &rsp->type); buf = taosDecodeFixedI32(buf, &rsp->code); switch (rsp->type) { case UDF_TASK_SETUP: buf = decodeUdfSetupResponse(buf, &rsp->setupRsp); break; case UDF_TASK_CALL: buf = decodeUdfCallResponse(buf, &rsp->callRsp); break; case UDF_TASK_TEARDOWN: buf = decodeUdfTeardownResponse(buf, &rsp->teardownRsp); break; default: fnError("decode udf response, invalid udf response type %d", rsp->type); break; } return (void *)buf; } void freeUdfColumnData(SUdfColumnData *data, SUdfColumnMeta *meta) { if (IS_VAR_DATA_TYPE(meta->type)) { taosMemoryFree(data->varLenCol.varOffsets); data->varLenCol.varOffsets = NULL; taosMemoryFree(data->varLenCol.payload); data->varLenCol.payload = NULL; } else { taosMemoryFree(data->fixLenCol.nullBitmap); data->fixLenCol.nullBitmap = NULL; taosMemoryFree(data->fixLenCol.data); data->fixLenCol.data = NULL; } } void freeUdfColumn(SUdfColumn *col) { freeUdfColumnData(&col->colData, &col->colMeta); } void freeUdfDataDataBlock(SUdfDataBlock *block) { for (int32_t i = 0; i < block->numOfCols; ++i) { freeUdfColumn(block->udfCols[i]); taosMemoryFree(block->udfCols[i]); block->udfCols[i] = NULL; } taosMemoryFree(block->udfCols); block->udfCols = NULL; } void freeUdfInterBuf(SUdfInterBuf *buf) { taosMemoryFree(buf->buf); buf->buf = NULL; } int32_t convertDataBlockToUdfDataBlock(SSDataBlock *block, SUdfDataBlock *udfBlock) { udfBlock->numOfRows = block->info.rows; udfBlock->numOfCols = taosArrayGetSize(block->pDataBlock); udfBlock->udfCols = taosMemoryCalloc(taosArrayGetSize(block->pDataBlock), sizeof(SUdfColumn *)); for (int32_t i = 0; i < udfBlock->numOfCols; ++i) { udfBlock->udfCols[i] = taosMemoryCalloc(1, sizeof(SUdfColumn)); SColumnInfoData *col = (SColumnInfoData *)taosArrayGet(block->pDataBlock, i); SUdfColumn *udfCol = udfBlock->udfCols[i]; udfCol->colMeta.type = col->info.type; udfCol->colMeta.bytes = col->info.bytes; udfCol->colMeta.scale = col->info.scale; udfCol->colMeta.precision = col->info.precision; udfCol->colData.numOfRows = udfBlock->numOfRows; udfCol->hasNull = col->hasNull; if (IS_VAR_DATA_TYPE(udfCol->colMeta.type)) { udfCol->colData.varLenCol.varOffsetsLen = sizeof(int32_t) * udfBlock->numOfRows; udfCol->colData.varLenCol.varOffsets = taosMemoryMalloc(udfCol->colData.varLenCol.varOffsetsLen); memcpy(udfCol->colData.varLenCol.varOffsets, col->varmeta.offset, udfCol->colData.varLenCol.varOffsetsLen); udfCol->colData.varLenCol.payloadLen = colDataGetLength(col, udfBlock->numOfRows); udfCol->colData.varLenCol.payload = taosMemoryMalloc(udfCol->colData.varLenCol.payloadLen); memcpy(udfCol->colData.varLenCol.payload, col->pData, udfCol->colData.varLenCol.payloadLen); } else { udfCol->colData.fixLenCol.nullBitmapLen = BitmapLen(udfCol->colData.numOfRows); int32_t bitmapLen = udfCol->colData.fixLenCol.nullBitmapLen; udfCol->colData.fixLenCol.nullBitmap = taosMemoryMalloc(udfCol->colData.fixLenCol.nullBitmapLen); char *bitmap = udfCol->colData.fixLenCol.nullBitmap; memcpy(bitmap, col->nullbitmap, bitmapLen); udfCol->colData.fixLenCol.dataLen = colDataGetLength(col, udfBlock->numOfRows); int32_t dataLen = udfCol->colData.fixLenCol.dataLen; udfCol->colData.fixLenCol.data = taosMemoryMalloc(udfCol->colData.fixLenCol.dataLen); char *data = udfCol->colData.fixLenCol.data; memcpy(data, col->pData, dataLen); } } return 0; } int32_t convertUdfColumnToDataBlock(SUdfColumn *udfCol, SSDataBlock *block) { block->info.rows = udfCol->colData.numOfRows; block->info.hasVarCol = IS_VAR_DATA_TYPE(udfCol->colMeta.type); block->pDataBlock = taosArrayInit(1, sizeof(SColumnInfoData)); taosArrayPush(block->pDataBlock, &(SColumnInfoData){0}); SColumnInfoData *col = taosArrayGet(block->pDataBlock, 0); SUdfColumnMeta *meta = &udfCol->colMeta; col->info.precision = meta->precision; col->info.bytes = meta->bytes; col->info.scale = meta->scale; col->info.type = meta->type; col->hasNull = udfCol->hasNull; SUdfColumnData *data = &udfCol->colData; if (!IS_VAR_DATA_TYPE(meta->type)) { col->nullbitmap = taosMemoryMalloc(data->fixLenCol.nullBitmapLen); memcpy(col->nullbitmap, data->fixLenCol.nullBitmap, data->fixLenCol.nullBitmapLen); col->pData = taosMemoryMalloc(data->fixLenCol.dataLen); memcpy(col->pData, data->fixLenCol.data, data->fixLenCol.dataLen); } else { col->varmeta.offset = taosMemoryMalloc(data->varLenCol.varOffsetsLen); memcpy(col->varmeta.offset, data->varLenCol.varOffsets, data->varLenCol.varOffsetsLen); col->pData = taosMemoryMalloc(data->varLenCol.payloadLen); memcpy(col->pData, data->varLenCol.payload, data->varLenCol.payloadLen); } return 0; } int32_t convertScalarParamToDataBlock(SScalarParam *input, int32_t numOfCols, SSDataBlock *output) { int32_t numOfRows = 0; for (int32_t i = 0; i < numOfCols; ++i) { numOfRows = (input[i].numOfRows > numOfRows) ? input[i].numOfRows : numOfRows; } // create the basic block info structure for(int32_t i = 0; i < numOfCols; ++i) { SColumnInfoData* pInfo = input[i].columnData; SColumnInfoData d = {0}; d.info = pInfo->info; blockDataAppendColInfo(output, &d); } blockDataEnsureCapacity(output, numOfRows); for(int32_t i = 0; i < numOfCols; ++i) { SColumnInfoData* pDest = taosArrayGet(output->pDataBlock, i); SColumnInfoData* pColInfoData = input[i].columnData; colDataAssign(pDest, pColInfoData, input[i].numOfRows, &output->info); if (input[i].numOfRows < numOfRows) { int32_t startRow = input[i].numOfRows; int expandRows = numOfRows - startRow; bool isNull = colDataIsNull_s(pColInfoData, (input+i)->numOfRows - 1); if (isNull) { colDataAppendNNULL(pDest, startRow, expandRows); } else { char* src = colDataGetData(pColInfoData, (input + i)->numOfRows - 1); for (int j = 0; j < expandRows; ++j) { colDataAppend(pDest, startRow+j, src, false); } //colDataAppendNItems(pColInfoData, startRow, data, expandRows); } } } output->info.rows = numOfRows; return 0; } int32_t convertDataBlockToScalarParm(SSDataBlock *input, SScalarParam *output) { if (taosArrayGetSize(input->pDataBlock) != 1) { fnError("scalar function only support one column"); return -1; } output->numOfRows = input->info.rows; output->columnData = taosMemoryMalloc(sizeof(SColumnInfoData)); memcpy(output->columnData, taosArrayGet(input->pDataBlock, 0), sizeof(SColumnInfoData)); output->colAlloced = true; return 0; } ////////////////////////////////////////////////////////////////////////////////////////////////////////////// // memory layout |---SUdfAggRes----|-----final result-----|---inter result----| typedef struct SUdfAggRes { int8_t finalResNum; int8_t interResNum; char *finalResBuf; char *interResBuf; } SUdfAggRes; void onUdfcPipeClose(uv_handle_t *handle); int32_t udfcGetUdfTaskResultFromUvTask(SClientUdfTask *task, SClientUvTaskNode *uvTask); void udfcAllocateBuffer(uv_handle_t *handle, size_t suggestedSize, uv_buf_t *buf); bool isUdfcUvMsgComplete(SClientConnBuf *connBuf); void udfcUvHandleRsp(SClientUvConn *conn); void udfcUvHandleError(SClientUvConn *conn); void onUdfcPipeRead(uv_stream_t *client, ssize_t nread, const uv_buf_t *buf); void onUdfcPipeWrite(uv_write_t *write, int status); void onUdfcPipeConnect(uv_connect_t *connect, int status); int32_t udfcInitializeUvTask(SClientUdfTask *task, int8_t uvTaskType, SClientUvTaskNode *uvTask); int32_t udfcQueueUvTask(SClientUvTaskNode *uvTask); int32_t udfcStartUvTask(SClientUvTaskNode *uvTask); void udfcAsyncTaskCb(uv_async_t *async); void cleanUpUvTasks(SUdfcProxy *udfc); void udfStopAsyncCb(uv_async_t *async); void constructUdfService(void *argsThread); int32_t udfcRunUdfUvTask(SClientUdfTask *task, int8_t uvTaskType); int32_t doSetupUdf(char udfName[], UdfcFuncHandle *funcHandle); int compareUdfcFuncSub(const void *elem1, const void *elem2); int32_t doTeardownUdf(UdfcFuncHandle handle); int32_t callUdf(UdfcFuncHandle handle, int8_t callType, SSDataBlock *input, SUdfInterBuf *state, SUdfInterBuf *state2, SSDataBlock *output, SUdfInterBuf *newState); int32_t doCallUdfAggInit(UdfcFuncHandle handle, SUdfInterBuf *interBuf); int32_t doCallUdfAggProcess(UdfcFuncHandle handle, SSDataBlock *block, SUdfInterBuf *state, SUdfInterBuf *newState); int32_t doCallUdfAggMerge(UdfcFuncHandle handle, SUdfInterBuf *interBuf1, SUdfInterBuf *interBuf2, SUdfInterBuf *resultBuf); int32_t doCallUdfAggFinalize(UdfcFuncHandle handle, SUdfInterBuf *interBuf, SUdfInterBuf *resultData); int32_t doCallUdfScalarFunc(UdfcFuncHandle handle, SScalarParam *input, int32_t numOfCols, SScalarParam *output); int32_t callUdfScalarFunc(char *udfName, SScalarParam *input, int32_t numOfCols, SScalarParam *output); int32_t udfcOpen(); int32_t udfcClose(); int32_t acquireUdfFuncHandle(char *udfName, UdfcFuncHandle *pHandle); void releaseUdfFuncHandle(char *udfName); int32_t cleanUpUdfs(); bool udfAggGetEnv(struct SFunctionNode *pFunc, SFuncExecEnv *pEnv); bool udfAggInit(struct SqlFunctionCtx *pCtx, struct SResultRowEntryInfo *pResultCellInfo); int32_t udfAggProcess(struct SqlFunctionCtx *pCtx); int32_t udfAggFinalize(struct SqlFunctionCtx *pCtx, SSDataBlock *pBlock); int compareUdfcFuncSub(const void *elem1, const void *elem2) { SUdfcFuncStub *stub1 = (SUdfcFuncStub *)elem1; SUdfcFuncStub *stub2 = (SUdfcFuncStub *)elem2; return strcmp(stub1->udfName, stub2->udfName); } int32_t acquireUdfFuncHandle(char *udfName, UdfcFuncHandle *pHandle) { int32_t code = 0; uv_mutex_lock(&gUdfcProxy.udfStubsMutex); SUdfcFuncStub key = {0}; strncpy(key.udfName, udfName, TSDB_FUNC_NAME_LEN); int32_t stubIndex = taosArraySearchIdx(gUdfcProxy.udfStubs, &key, compareUdfcFuncSub, TD_EQ); if (stubIndex != -1) { SUdfcFuncStub *foundStub = taosArrayGet(gUdfcProxy.udfStubs, stubIndex); UdfcFuncHandle handle = foundStub->handle; if (handle != NULL && ((SUdfcUvSession *)handle)->udfUvPipe != NULL) { *pHandle = foundStub->handle; ++foundStub->refCount; foundStub->lastRefTime = taosGetTimestampUs(); uv_mutex_unlock(&gUdfcProxy.udfStubsMutex); return 0; } else { fnInfo("invalid handle for %s, refCount: %d, last ref time: %" PRId64 ". remove it from cache", udfName, foundStub->refCount, foundStub->lastRefTime); taosArrayRemove(gUdfcProxy.udfStubs, stubIndex); } } *pHandle = NULL; code = doSetupUdf(udfName, pHandle); if (code == TSDB_CODE_SUCCESS) { SUdfcFuncStub stub = {0}; strncpy(stub.udfName, udfName, TSDB_FUNC_NAME_LEN); stub.handle = *pHandle; ++stub.refCount; stub.lastRefTime = taosGetTimestampUs(); taosArrayPush(gUdfcProxy.udfStubs, &stub); taosArraySort(gUdfcProxy.udfStubs, compareUdfcFuncSub); } else { *pHandle = NULL; } uv_mutex_unlock(&gUdfcProxy.udfStubsMutex); return code; } void releaseUdfFuncHandle(char *udfName) { uv_mutex_lock(&gUdfcProxy.udfStubsMutex); SUdfcFuncStub key = {0}; strncpy(key.udfName, udfName, TSDB_FUNC_NAME_LEN); SUdfcFuncStub *foundStub = taosArraySearch(gUdfcProxy.udfStubs, &key, compareUdfcFuncSub, TD_EQ); if (!foundStub) { uv_mutex_unlock(&gUdfcProxy.udfStubsMutex); return; } if (foundStub->refCount > 0) { --foundStub->refCount; } uv_mutex_unlock(&gUdfcProxy.udfStubsMutex); } int32_t cleanUpUdfs() { int8_t initialized = atomic_load_8(&gUdfcProxy.initialized); if (!initialized) { return TSDB_CODE_SUCCESS; } uv_mutex_lock(&gUdfcProxy.udfStubsMutex); if (gUdfcProxy.udfStubs == NULL || taosArrayGetSize(gUdfcProxy.udfStubs) == 0) { uv_mutex_unlock(&gUdfcProxy.udfStubsMutex); return TSDB_CODE_SUCCESS; } SArray *udfStubs = taosArrayInit(16, sizeof(SUdfcFuncStub)); int32_t i = 0; while (i < taosArrayGetSize(gUdfcProxy.udfStubs)) { SUdfcFuncStub *stub = taosArrayGet(gUdfcProxy.udfStubs, i); if (stub->refCount == 0) { fnInfo("tear down udf. udf name: %s, handle: %p, ref count: %d", stub->udfName, stub->handle, stub->refCount); doTeardownUdf(stub->handle); } else { fnInfo("udf still in use. udf name: %s, ref count: %d, last ref time: %" PRId64 ", handle: %p", stub->udfName, stub->refCount, stub->lastRefTime, stub->handle); UdfcFuncHandle handle = stub->handle; if (handle != NULL && ((SUdfcUvSession *)handle)->udfUvPipe != NULL) { taosArrayPush(udfStubs, stub); } else { fnInfo("udf invalid handle for %s, refCount: %d, last ref time: %" PRId64 ". remove it from cache", stub->udfName, stub->refCount, stub->lastRefTime); } } ++i; } taosArrayDestroy(gUdfcProxy.udfStubs); gUdfcProxy.udfStubs = udfStubs; uv_mutex_unlock(&gUdfcProxy.udfStubsMutex); return 0; } int32_t callUdfScalarFunc(char *udfName, SScalarParam *input, int32_t numOfCols, SScalarParam *output) { UdfcFuncHandle handle = NULL; int32_t code = acquireUdfFuncHandle(udfName, &handle); if (code != 0) { return code; } SUdfcUvSession *session = handle; code = doCallUdfScalarFunc(handle, input, numOfCols, output); if (output->columnData == NULL) { fnError("udfc scalar function calculate error. no column data"); code = TSDB_CODE_UDF_INVALID_OUTPUT_TYPE; } else { if (session->outputType != output->columnData->info.type || session->outputLen != output->columnData->info.bytes) { fnError("udfc scalar function calculate error. type mismatch. session type: %d(%d), output type: %d(%d)", session->outputType, session->outputLen, output->columnData->info.type, output->columnData->info.bytes); code = TSDB_CODE_UDF_INVALID_OUTPUT_TYPE; } } releaseUdfFuncHandle(udfName); return code; } bool udfAggGetEnv(struct SFunctionNode *pFunc, SFuncExecEnv *pEnv) { if (fmIsScalarFunc(pFunc->funcId)) { return false; } pEnv->calcMemSize = sizeof(SUdfAggRes) + pFunc->node.resType.bytes + pFunc->udfBufSize; return true; } bool udfAggInit(struct SqlFunctionCtx *pCtx, struct SResultRowEntryInfo *pResultCellInfo) { if (functionSetup(pCtx, pResultCellInfo) != true) { return false; } UdfcFuncHandle handle; int32_t udfCode = 0; if ((udfCode = acquireUdfFuncHandle((char *)pCtx->udfName, &handle)) != 0) { fnError("udfAggInit error. step doSetupUdf. udf code: %d", udfCode); return false; } SUdfcUvSession *session = (SUdfcUvSession *)handle; SUdfAggRes *udfRes = (SUdfAggRes *)GET_ROWCELL_INTERBUF(pResultCellInfo); int32_t envSize = sizeof(SUdfAggRes) + session->outputLen + session->bufSize; memset(udfRes, 0, envSize); udfRes->finalResBuf = (char *)udfRes + sizeof(SUdfAggRes); udfRes->interResBuf = (char *)udfRes + sizeof(SUdfAggRes) + session->outputLen; SUdfInterBuf buf = {0}; if ((udfCode = doCallUdfAggInit(handle, &buf)) != 0) { fnError("udfAggInit error. step doCallUdfAggInit. udf code: %d", udfCode); releaseUdfFuncHandle(pCtx->udfName); return false; } udfRes->interResNum = buf.numOfResult; if (buf.bufLen <= session->bufSize) { memcpy(udfRes->interResBuf, buf.buf, buf.bufLen); } else { fnError("udfc inter buf size %d is greater than function bufSize %d", buf.bufLen, session->bufSize); releaseUdfFuncHandle(pCtx->udfName); return false; } releaseUdfFuncHandle(pCtx->udfName); freeUdfInterBuf(&buf); return true; } int32_t udfAggProcess(struct SqlFunctionCtx *pCtx) { int32_t udfCode = 0; UdfcFuncHandle handle = 0; if ((udfCode = acquireUdfFuncHandle((char *)pCtx->udfName, &handle)) != 0) { fnError("udfAggProcess error. step acquireUdfFuncHandle. udf code: %d", udfCode); return udfCode; } SUdfcUvSession *session = handle; SUdfAggRes *udfRes = (SUdfAggRes *)GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx)); udfRes->finalResBuf = (char *)udfRes + sizeof(SUdfAggRes); udfRes->interResBuf = (char *)udfRes + sizeof(SUdfAggRes) + session->outputLen; SInputColumnInfoData *pInput = &pCtx->input; int32_t numOfCols = pInput->numOfInputCols; int32_t start = pInput->startRowIndex; int32_t numOfRows = pInput->numOfRows; SSDataBlock *pTempBlock = createDataBlock(); pTempBlock->info.rows = pInput->totalRows; pTempBlock->info.id.uid = pInput->uid; for (int32_t i = 0; i < numOfCols; ++i) { blockDataAppendColInfo(pTempBlock, pInput->pData[i]); } SSDataBlock *inputBlock = blockDataExtractBlock(pTempBlock, start, numOfRows); SUdfInterBuf state = {.buf = udfRes->interResBuf, .bufLen = session->bufSize, .numOfResult = udfRes->interResNum}; SUdfInterBuf newState = {0}; udfCode = doCallUdfAggProcess(session, inputBlock, &state, &newState); if (udfCode != 0) { fnError("udfAggProcess error. code: %d", udfCode); newState.numOfResult = 0; } else { udfRes->interResNum = newState.numOfResult; if (newState.bufLen <= session->bufSize) { memcpy(udfRes->interResBuf, newState.buf, newState.bufLen); } else { fnError("udfc inter buf size %d is greater than function bufSize %d", newState.bufLen, session->bufSize); udfCode = TSDB_CODE_UDF_INVALID_BUFSIZE; } } if (newState.numOfResult == 1 || state.numOfResult == 1) { GET_RES_INFO(pCtx)->numOfRes = 1; } blockDataDestroy(inputBlock); taosArrayDestroy(pTempBlock->pDataBlock); taosMemoryFree(pTempBlock); releaseUdfFuncHandle(pCtx->udfName); freeUdfInterBuf(&newState); return udfCode; } int32_t udfAggFinalize(struct SqlFunctionCtx *pCtx, SSDataBlock *pBlock) { int32_t udfCode = 0; UdfcFuncHandle handle = 0; if ((udfCode = acquireUdfFuncHandle((char *)pCtx->udfName, &handle)) != 0) { fnError("udfAggProcess error. step acquireUdfFuncHandle. udf code: %d", udfCode); return udfCode; } SUdfcUvSession *session = handle; SUdfAggRes *udfRes = (SUdfAggRes *)GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx)); udfRes->finalResBuf = (char *)udfRes + sizeof(SUdfAggRes); udfRes->interResBuf = (char *)udfRes + sizeof(SUdfAggRes) + session->outputLen; SUdfInterBuf resultBuf = {0}; SUdfInterBuf state = {.buf = udfRes->interResBuf, .bufLen = session->bufSize, .numOfResult = udfRes->interResNum}; int32_t udfCallCode = 0; udfCallCode = doCallUdfAggFinalize(session, &state, &resultBuf); if (udfCallCode != 0) { fnError("udfAggFinalize error. doCallUdfAggFinalize step. udf code:%d", udfCallCode); GET_RES_INFO(pCtx)->numOfRes = 0; } else { if (resultBuf.bufLen <= session->outputLen) { memcpy(udfRes->finalResBuf, resultBuf.buf, session->outputLen); udfRes->finalResNum = resultBuf.numOfResult; GET_RES_INFO(pCtx)->numOfRes = udfRes->finalResNum; } else { fnError("udfc inter buf size %d is greater than function output size %d", resultBuf.bufLen, session->outputLen); GET_RES_INFO(pCtx)->numOfRes = 0; udfCallCode = TSDB_CODE_UDF_INVALID_OUTPUT_TYPE; } } freeUdfInterBuf(&resultBuf); int32_t numOfResults = functionFinalizeWithResultBuf(pCtx, pBlock, udfRes->finalResBuf); releaseUdfFuncHandle(pCtx->udfName); return udfCallCode == 0 ? numOfResults : udfCallCode; } void onUdfcPipeClose(uv_handle_t *handle) { SClientUvConn *conn = handle->data; if (!QUEUE_EMPTY(&conn->taskQueue)) { QUEUE *h = QUEUE_HEAD(&conn->taskQueue); SClientUvTaskNode *task = QUEUE_DATA(h, SClientUvTaskNode, connTaskQueue); task->errCode = 0; QUEUE_REMOVE(&task->procTaskQueue); uv_sem_post(&task->taskSem); } uv_mutex_lock(&gUdfcProxy.udfcUvMutex); if (conn->session != NULL) { conn->session->udfUvPipe = NULL; } uv_mutex_unlock(&gUdfcProxy.udfcUvMutex); taosMemoryFree(conn->readBuf.buf); taosMemoryFree(conn); taosMemoryFree((uv_pipe_t *)handle); } int32_t udfcGetUdfTaskResultFromUvTask(SClientUdfTask *task, SClientUvTaskNode *uvTask) { fnDebug("udfc get uv task result. task: %p, uvTask: %p", task, uvTask); if (uvTask->type == UV_TASK_REQ_RSP) { if (uvTask->rspBuf.base != NULL) { SUdfResponse rsp = {0}; void *buf = decodeUdfResponse(uvTask->rspBuf.base, &rsp); task->errCode = rsp.code; switch (task->type) { case UDF_TASK_SETUP: { task->_setup.rsp = rsp.setupRsp; break; } case UDF_TASK_CALL: { task->_call.rsp = rsp.callRsp; break; } case UDF_TASK_TEARDOWN: { task->_teardown.rsp = rsp.teardownRsp; break; } default: { break; } } // TODO: the call buffer is setup and freed by udf invocation taosMemoryFree(uvTask->rspBuf.base); } else { task->errCode = uvTask->errCode; } } else if (uvTask->type == UV_TASK_CONNECT) { task->errCode = uvTask->errCode; } else if (uvTask->type == UV_TASK_DISCONNECT) { task->errCode = uvTask->errCode; } return 0; } void udfcAllocateBuffer(uv_handle_t *handle, size_t suggestedSize, uv_buf_t *buf) { SClientUvConn *conn = handle->data; SClientConnBuf *connBuf = &conn->readBuf; int32_t msgHeadSize = sizeof(int32_t) + sizeof(int64_t); if (connBuf->cap == 0) { connBuf->buf = taosMemoryMalloc(msgHeadSize); if (connBuf->buf) { connBuf->len = 0; connBuf->cap = msgHeadSize; connBuf->total = -1; buf->base = connBuf->buf; buf->len = connBuf->cap; } else { fnError("udfc allocate buffer failure. size: %d", msgHeadSize); buf->base = NULL; buf->len = 0; } } else if (connBuf->total == -1 && connBuf->len < msgHeadSize) { buf->base = connBuf->buf + connBuf->len; buf->len = msgHeadSize - connBuf->len; } else { connBuf->cap = connBuf->total > connBuf->cap ? connBuf->total : connBuf->cap; void *resultBuf = taosMemoryRealloc(connBuf->buf, connBuf->cap); if (resultBuf) { connBuf->buf = resultBuf; buf->base = connBuf->buf + connBuf->len; buf->len = connBuf->cap - connBuf->len; } else { fnError("udfc re-allocate buffer failure. size: %d", connBuf->cap); buf->base = NULL; buf->len = 0; } } fnDebug("udfc uv alloc buffer: cap - len - total : %d - %d - %d", connBuf->cap, connBuf->len, connBuf->total); } bool isUdfcUvMsgComplete(SClientConnBuf *connBuf) { if (connBuf->total == -1 && connBuf->len >= sizeof(int32_t)) { connBuf->total = *(int32_t *)(connBuf->buf); } if (connBuf->len == connBuf->cap && connBuf->total == connBuf->cap) { fnDebug("udfc complete message is received, now handle it"); return true; } return false; } void udfcUvHandleRsp(SClientUvConn *conn) { SClientConnBuf *connBuf = &conn->readBuf; int64_t seqNum = *(int64_t *)(connBuf->buf + sizeof(int32_t)); // msglen then seqnum if (QUEUE_EMPTY(&conn->taskQueue)) { fnError("udfc no task waiting on connection. response seqnum:%" PRId64, seqNum); return; } bool found = false; SClientUvTaskNode *taskFound = NULL; QUEUE *h = QUEUE_NEXT(&conn->taskQueue); SClientUvTaskNode *task = QUEUE_DATA(h, SClientUvTaskNode, connTaskQueue); while (h != &conn->taskQueue) { fnDebug("udfc handle response iterate through queue. uvTask:%" PRId64 "-%p", task->seqNum, task); if (task->seqNum == seqNum) { if (found == false) { found = true; taskFound = task; } else { fnError("udfc more than one task waiting for the same response"); continue; } } h = QUEUE_NEXT(h); task = QUEUE_DATA(h, SClientUvTaskNode, connTaskQueue); } if (taskFound) { taskFound->rspBuf = uv_buf_init(connBuf->buf, connBuf->len); QUEUE_REMOVE(&taskFound->connTaskQueue); QUEUE_REMOVE(&taskFound->procTaskQueue); uv_sem_post(&taskFound->taskSem); } else { fnError("no task is waiting for the response."); } connBuf->buf = NULL; connBuf->total = -1; connBuf->len = 0; connBuf->cap = 0; } void udfcUvHandleError(SClientUvConn *conn) { fnDebug("handle error on conn: %p, pipe: %p", conn, conn->pipe); while (!QUEUE_EMPTY(&conn->taskQueue)) { QUEUE *h = QUEUE_HEAD(&conn->taskQueue); SClientUvTaskNode *task = QUEUE_DATA(h, SClientUvTaskNode, connTaskQueue); task->errCode = TSDB_CODE_UDF_PIPE_READ_ERR; QUEUE_REMOVE(&task->connTaskQueue); QUEUE_REMOVE(&task->procTaskQueue); uv_sem_post(&task->taskSem); } uv_close((uv_handle_t *)conn->pipe, onUdfcPipeClose); } void onUdfcPipeRead(uv_stream_t *client, ssize_t nread, const uv_buf_t *buf) { fnDebug("udfc client %p, client read from pipe. nread: %zd", client, nread); if (nread == 0) return; SClientUvConn *conn = client->data; SClientConnBuf *connBuf = &conn->readBuf; if (nread > 0) { connBuf->len += nread; if (isUdfcUvMsgComplete(connBuf)) { udfcUvHandleRsp(conn); } } if (nread < 0) { fnError("udfc client pipe %p read error: %zd(%s).", client, nread, uv_strerror(nread)); if (nread == UV_EOF) { fnError("\tudfc client pipe %p closed", client); } udfcUvHandleError(conn); } } void onUdfcPipeWrite(uv_write_t *write, int status) { SClientUvConn *conn = write->data; if (status < 0) { fnError("udfc client connection %p write failed. status: %d(%s)", conn, status, uv_strerror(status)); udfcUvHandleError(conn); } else { fnDebug("udfc client connection %p write succeed", conn); } taosMemoryFree(write); } void onUdfcPipeConnect(uv_connect_t *connect, int status) { SClientUvTaskNode *uvTask = connect->data; if (status != 0) { fnError("client connect error, task seq: %" PRId64 ", code: %s", uvTask->seqNum, uv_strerror(status)); } uvTask->errCode = status; uv_read_start((uv_stream_t *)uvTask->pipe, udfcAllocateBuffer, onUdfcPipeRead); taosMemoryFree(connect); QUEUE_REMOVE(&uvTask->procTaskQueue); uv_sem_post(&uvTask->taskSem); } int32_t udfcInitializeUvTask(SClientUdfTask *task, int8_t uvTaskType, SClientUvTaskNode *uvTask) { uvTask->type = uvTaskType; uvTask->udfc = task->session->udfc; if (uvTaskType == UV_TASK_CONNECT) { } else if (uvTaskType == UV_TASK_REQ_RSP) { uvTask->pipe = task->session->udfUvPipe; SUdfRequest request; request.type = task->type; request.seqNum = atomic_fetch_add_64(&gUdfTaskSeqNum, 1); if (task->type == UDF_TASK_SETUP) { request.setup = task->_setup.req; request.type = UDF_TASK_SETUP; } else if (task->type == UDF_TASK_CALL) { request.call = task->_call.req; request.type = UDF_TASK_CALL; } else if (task->type == UDF_TASK_TEARDOWN) { request.teardown = task->_teardown.req; request.type = UDF_TASK_TEARDOWN; } else { fnError("udfc create uv task, invalid task type : %d", task->type); } int32_t bufLen = encodeUdfRequest(NULL, &request); request.msgLen = bufLen; void *bufBegin = taosMemoryMalloc(bufLen); void *buf = bufBegin; encodeUdfRequest(&buf, &request); uvTask->reqBuf = uv_buf_init(bufBegin, bufLen); uvTask->seqNum = request.seqNum; } else if (uvTaskType == UV_TASK_DISCONNECT) { uvTask->pipe = task->session->udfUvPipe; } uv_sem_init(&uvTask->taskSem, 0); return 0; } int32_t udfcQueueUvTask(SClientUvTaskNode *uvTask) { fnDebug("queue uv task to event loop, uvTask: %d-%p", uvTask->type, uvTask); SUdfcProxy *udfc = uvTask->udfc; uv_mutex_lock(&udfc->taskQueueMutex); QUEUE_INSERT_TAIL(&udfc->taskQueue, &uvTask->recvTaskQueue); uv_mutex_unlock(&udfc->taskQueueMutex); uv_async_send(&udfc->loopTaskAync); uv_sem_wait(&uvTask->taskSem); fnInfo("udfc uvTask finished. uvTask:%" PRId64 "-%d-%p", uvTask->seqNum, uvTask->type, uvTask); uv_sem_destroy(&uvTask->taskSem); return 0; } int32_t udfcStartUvTask(SClientUvTaskNode *uvTask) { fnDebug("event loop start uv task. uvTask: %" PRId64 "-%d-%p", uvTask->seqNum, uvTask->type, uvTask); int32_t code = 0; switch (uvTask->type) { case UV_TASK_CONNECT: { uv_pipe_t *pipe = taosMemoryMalloc(sizeof(uv_pipe_t)); uv_pipe_init(&uvTask->udfc->uvLoop, pipe, 0); uvTask->pipe = pipe; SClientUvConn *conn = taosMemoryCalloc(1, sizeof(SClientUvConn)); conn->pipe = pipe; conn->readBuf.len = 0; conn->readBuf.cap = 0; conn->readBuf.buf = 0; conn->readBuf.total = -1; QUEUE_INIT(&conn->taskQueue); pipe->data = conn; uv_connect_t *connReq = taosMemoryMalloc(sizeof(uv_connect_t)); connReq->data = uvTask; uv_pipe_connect(connReq, pipe, uvTask->udfc->udfdPipeName, onUdfcPipeConnect); code = 0; break; } case UV_TASK_REQ_RSP: { uv_pipe_t *pipe = uvTask->pipe; if (pipe == NULL) { code = TSDB_CODE_UDF_PIPE_NO_PIPE; } else { uv_write_t *write = taosMemoryMalloc(sizeof(uv_write_t)); write->data = pipe->data; QUEUE *connTaskQueue = &((SClientUvConn *)pipe->data)->taskQueue; QUEUE_INSERT_TAIL(connTaskQueue, &uvTask->connTaskQueue); int err = uv_write(write, (uv_stream_t *)pipe, &uvTask->reqBuf, 1, onUdfcPipeWrite); if (err != 0) { taosMemoryFree(write); fnError("udfc event loop start req_rsp task uv_write failed. uvtask: %p, code: %s", uvTask, uv_strerror(err)); } code = err; } break; } case UV_TASK_DISCONNECT: { uv_pipe_t *pipe = uvTask->pipe; if (pipe == NULL) { code = TSDB_CODE_UDF_PIPE_NO_PIPE; } else { SClientUvConn *conn = pipe->data; QUEUE_INSERT_TAIL(&conn->taskQueue, &uvTask->connTaskQueue); uv_close((uv_handle_t *)uvTask->pipe, onUdfcPipeClose); code = 0; } break; } default: { fnError("udfc event loop unknown task type.") break; } } return code; } void udfcAsyncTaskCb(uv_async_t *async) { SUdfcProxy *udfc = async->data; QUEUE wq; uv_mutex_lock(&udfc->taskQueueMutex); QUEUE_MOVE(&udfc->taskQueue, &wq); uv_mutex_unlock(&udfc->taskQueueMutex); while (!QUEUE_EMPTY(&wq)) { QUEUE *h = QUEUE_HEAD(&wq); QUEUE_REMOVE(h); SClientUvTaskNode *task = QUEUE_DATA(h, SClientUvTaskNode, recvTaskQueue); int32_t code = udfcStartUvTask(task); if (code == 0) { QUEUE_INSERT_TAIL(&udfc->uvProcTaskQueue, &task->procTaskQueue); } else { task->errCode = code; uv_sem_post(&task->taskSem); } } } void cleanUpUvTasks(SUdfcProxy *udfc) { fnDebug("clean up uv tasks") QUEUE wq; uv_mutex_lock(&udfc->taskQueueMutex); QUEUE_MOVE(&udfc->taskQueue, &wq); uv_mutex_unlock(&udfc->taskQueueMutex); while (!QUEUE_EMPTY(&wq)) { QUEUE *h = QUEUE_HEAD(&wq); QUEUE_REMOVE(h); SClientUvTaskNode *task = QUEUE_DATA(h, SClientUvTaskNode, recvTaskQueue); if (udfc->udfcState == UDFC_STATE_STOPPING) { task->errCode = TSDB_CODE_UDF_STOPPING; } uv_sem_post(&task->taskSem); } while (!QUEUE_EMPTY(&udfc->uvProcTaskQueue)) { QUEUE *h = QUEUE_HEAD(&udfc->uvProcTaskQueue); QUEUE_REMOVE(h); SClientUvTaskNode *task = QUEUE_DATA(h, SClientUvTaskNode, procTaskQueue); if (udfc->udfcState == UDFC_STATE_STOPPING) { task->errCode = TSDB_CODE_UDF_STOPPING; } uv_sem_post(&task->taskSem); } } void udfStopAsyncCb(uv_async_t *async) { SUdfcProxy *udfc = async->data; cleanUpUvTasks(udfc); if (udfc->udfcState == UDFC_STATE_STOPPING) { uv_stop(&udfc->uvLoop); } } void constructUdfService(void *argsThread) { SUdfcProxy *udfc = (SUdfcProxy *)argsThread; uv_loop_init(&udfc->uvLoop); uv_async_init(&udfc->uvLoop, &udfc->loopTaskAync, udfcAsyncTaskCb); udfc->loopTaskAync.data = udfc; uv_async_init(&udfc->uvLoop, &udfc->loopStopAsync, udfStopAsyncCb); udfc->loopStopAsync.data = udfc; uv_mutex_init(&udfc->taskQueueMutex); QUEUE_INIT(&udfc->taskQueue); QUEUE_INIT(&udfc->uvProcTaskQueue); uv_barrier_wait(&udfc->initBarrier); // TODO return value of uv_run uv_run(&udfc->uvLoop, UV_RUN_DEFAULT); uv_loop_close(&udfc->uvLoop); uv_walk(&udfc->uvLoop, udfUdfdCloseWalkCb, NULL); uv_run(&udfc->uvLoop, UV_RUN_DEFAULT); uv_loop_close(&udfc->uvLoop); } int32_t udfcOpen() { int8_t old = atomic_val_compare_exchange_8(&gUdfcProxy.initialized, 0, 1); if (old == 1) { return 0; } SUdfcProxy *proxy = &gUdfcProxy; getUdfdPipeName(proxy->udfdPipeName, sizeof(proxy->udfdPipeName)); proxy->udfcState = UDFC_STATE_STARTNG; uv_barrier_init(&proxy->initBarrier, 2); uv_thread_create(&proxy->loopThread, constructUdfService, proxy); atomic_store_8(&proxy->udfcState, UDFC_STATE_READY); proxy->udfcState = UDFC_STATE_READY; uv_barrier_wait(&proxy->initBarrier); uv_mutex_init(&proxy->udfStubsMutex); proxy->udfStubs = taosArrayInit(8, sizeof(SUdfcFuncStub)); uv_mutex_init(&proxy->udfcUvMutex); fnInfo("udfc initialized") return 0; } int32_t udfcClose() { int8_t old = atomic_val_compare_exchange_8(&gUdfcProxy.initialized, 1, 0); if (old == 0) { return 0; } SUdfcProxy *udfc = &gUdfcProxy; udfc->udfcState = UDFC_STATE_STOPPING; uv_async_send(&udfc->loopStopAsync); uv_thread_join(&udfc->loopThread); uv_mutex_destroy(&udfc->taskQueueMutex); uv_barrier_destroy(&udfc->initBarrier); taosArrayDestroy(udfc->udfStubs); uv_mutex_destroy(&udfc->udfStubsMutex); uv_mutex_destroy(&udfc->udfcUvMutex); udfc->udfcState = UDFC_STATE_INITAL; fnInfo("udfc is cleaned up"); return 0; } int32_t udfcRunUdfUvTask(SClientUdfTask *task, int8_t uvTaskType) { SClientUvTaskNode *uvTask = taosMemoryCalloc(1, sizeof(SClientUvTaskNode)); fnDebug("udfc client task: %p created uvTask: %p. pipe: %p", task, uvTask, task->session->udfUvPipe); udfcInitializeUvTask(task, uvTaskType, uvTask); udfcQueueUvTask(uvTask); udfcGetUdfTaskResultFromUvTask(task, uvTask); if (uvTaskType == UV_TASK_CONNECT) { task->session->udfUvPipe = uvTask->pipe; SClientUvConn *conn = uvTask->pipe->data; conn->session = task->session; } taosMemoryFree(uvTask->reqBuf.base); uvTask->reqBuf.base = NULL; taosMemoryFree(uvTask); fnDebug("udfc freed uvTask: %p", task); uvTask = NULL; return task->errCode; } int32_t doSetupUdf(char udfName[], UdfcFuncHandle *funcHandle) { if (gUdfcProxy.udfcState != UDFC_STATE_READY) { return TSDB_CODE_UDF_INVALID_STATE; } SClientUdfTask *task = taosMemoryCalloc(1, sizeof(SClientUdfTask)); task->errCode = 0; task->session = taosMemoryCalloc(1, sizeof(SUdfcUvSession)); task->session->udfc = &gUdfcProxy; task->type = UDF_TASK_SETUP; SUdfSetupRequest *req = &task->_setup.req; strncpy(req->udfName, udfName, TSDB_FUNC_NAME_LEN); int32_t errCode = udfcRunUdfUvTask(task, UV_TASK_CONNECT); if (errCode != 0) { fnError("failed to connect to pipe. udfName: %s, pipe: %s", udfName, (&gUdfcProxy)->udfdPipeName); taosMemoryFree(task->session); taosMemoryFree(task); return TSDB_CODE_UDF_PIPE_CONNECT_ERR; } udfcRunUdfUvTask(task, UV_TASK_REQ_RSP); SUdfSetupResponse *rsp = &task->_setup.rsp; task->session->severHandle = rsp->udfHandle; task->session->outputType = rsp->outputType; task->session->outputLen = rsp->outputLen; task->session->bufSize = rsp->bufSize; strncpy(task->session->udfName, udfName, TSDB_FUNC_NAME_LEN); if (task->errCode != 0) { fnError("failed to setup udf. udfname: %s, err: %d", udfName, task->errCode) } else { fnInfo("sucessfully setup udf func handle. udfName: %s, handle: %p", udfName, task->session); *funcHandle = task->session; } int32_t err = task->errCode; taosMemoryFree(task); return err; } int32_t callUdf(UdfcFuncHandle handle, int8_t callType, SSDataBlock *input, SUdfInterBuf *state, SUdfInterBuf *state2, SSDataBlock *output, SUdfInterBuf *newState) { fnDebug("udfc call udf. callType: %d, funcHandle: %p", callType, handle); SUdfcUvSession *session = (SUdfcUvSession *)handle; if (session->udfUvPipe == NULL) { fnError("No pipe to udfd"); return TSDB_CODE_UDF_PIPE_NO_PIPE; } SClientUdfTask *task = taosMemoryCalloc(1, sizeof(SClientUdfTask)); task->errCode = 0; task->session = (SUdfcUvSession *)handle; task->type = UDF_TASK_CALL; SUdfCallRequest *req = &task->_call.req; req->udfHandle = task->session->severHandle; req->callType = callType; switch (callType) { case TSDB_UDF_CALL_AGG_INIT: { req->initFirst = 1; break; } case TSDB_UDF_CALL_AGG_PROC: { req->block = *input; req->interBuf = *state; break; } case TSDB_UDF_CALL_AGG_MERGE: { req->interBuf = *state; req->interBuf2 = *state2; break; } case TSDB_UDF_CALL_AGG_FIN: { req->interBuf = *state; break; } case TSDB_UDF_CALL_SCALA_PROC: { req->block = *input; break; } } udfcRunUdfUvTask(task, UV_TASK_REQ_RSP); if (task->errCode != 0) { fnError("call udf failure. err: %d", task->errCode); } else { SUdfCallResponse *rsp = &task->_call.rsp; switch (callType) { case TSDB_UDF_CALL_AGG_INIT: { *newState = rsp->resultBuf; break; } case TSDB_UDF_CALL_AGG_PROC: { *newState = rsp->resultBuf; break; } case TSDB_UDF_CALL_AGG_MERGE: { *newState = rsp->resultBuf; break; } case TSDB_UDF_CALL_AGG_FIN: { *newState = rsp->resultBuf; break; } case TSDB_UDF_CALL_SCALA_PROC: { *output = rsp->resultData; break; } } }; int err = task->errCode; taosMemoryFree(task); return err; } int32_t doCallUdfAggInit(UdfcFuncHandle handle, SUdfInterBuf *interBuf) { int8_t callType = TSDB_UDF_CALL_AGG_INIT; int32_t err = callUdf(handle, callType, NULL, NULL, NULL, NULL, interBuf); return err; } // input: block, state // output: interbuf, int32_t doCallUdfAggProcess(UdfcFuncHandle handle, SSDataBlock *block, SUdfInterBuf *state, SUdfInterBuf *newState) { int8_t callType = TSDB_UDF_CALL_AGG_PROC; int32_t err = callUdf(handle, callType, block, state, NULL, NULL, newState); return err; } // input: interbuf1, interbuf2 // output: resultBuf int32_t doCallUdfAggMerge(UdfcFuncHandle handle, SUdfInterBuf *interBuf1, SUdfInterBuf *interBuf2, SUdfInterBuf *resultBuf) { int8_t callType = TSDB_UDF_CALL_AGG_MERGE; int32_t err = callUdf(handle, callType, NULL, interBuf1, interBuf2, NULL, resultBuf); return err; } // input: interBuf // output: resultData int32_t doCallUdfAggFinalize(UdfcFuncHandle handle, SUdfInterBuf *interBuf, SUdfInterBuf *resultData) { int8_t callType = TSDB_UDF_CALL_AGG_FIN; int32_t err = callUdf(handle, callType, NULL, interBuf, NULL, NULL, resultData); return err; } int32_t doCallUdfScalarFunc(UdfcFuncHandle handle, SScalarParam *input, int32_t numOfCols, SScalarParam *output) { int8_t callType = TSDB_UDF_CALL_SCALA_PROC; SSDataBlock inputBlock = {0}; convertScalarParamToDataBlock(input, numOfCols, &inputBlock); SSDataBlock resultBlock = {0}; int32_t err = callUdf(handle, callType, &inputBlock, NULL, NULL, &resultBlock, NULL); if (err == 0) { convertDataBlockToScalarParm(&resultBlock, output); taosArrayDestroy(resultBlock.pDataBlock); } blockDataFreeRes(&inputBlock); return err; } int32_t doTeardownUdf(UdfcFuncHandle handle) { SUdfcUvSession *session = (SUdfcUvSession *)handle; if (session->udfUvPipe == NULL) { fnError("tear down udf. pipe to udfd does not exist. udf name: %s", session->udfName); taosMemoryFree(session); return TSDB_CODE_UDF_PIPE_NO_PIPE; } SClientUdfTask *task = taosMemoryCalloc(1, sizeof(SClientUdfTask)); task->errCode = 0; task->session = session; task->type = UDF_TASK_TEARDOWN; SUdfTeardownRequest *req = &task->_teardown.req; req->udfHandle = task->session->severHandle; udfcRunUdfUvTask(task, UV_TASK_REQ_RSP); int32_t err = task->errCode; udfcRunUdfUvTask(task, UV_TASK_DISCONNECT); fnInfo("tear down udf. udf name: %s, udf func handle: %p", session->udfName, handle); // TODO: synchronization refactor between libuv event loop and request thread uv_mutex_lock(&gUdfcProxy.udfcUvMutex); if (session->udfUvPipe != NULL && session->udfUvPipe->data != NULL) { SClientUvConn *conn = session->udfUvPipe->data; conn->session = NULL; } uv_mutex_unlock(&gUdfcProxy.udfcUvMutex); taosMemoryFree(session); taosMemoryFree(task); return err; }