fix: add created time to file name and keep file reuse

include/common/tmsg.h

@@ -1093,10 +1093,15 @@ typedef struct {
   char*   pCode;
 } SFuncInfo;
 
+typedef struct {
+  int32_t funcVersion;
+  int64_t funcCreatedTime;
+} SFuncExtraInfo;
+
 typedef struct {
   int32_t numOfFuncs;
   SArray* pFuncInfos;
-  SArray* pFuncVersions;
+  SArray* pFuncExtraInfos;
 } SRetrieveFuncRsp;
 
 int32_t tSerializeSRetrieveFuncRsp(void* buf, int32_t bufLen, SRetrieveFuncRsp* pRsp);

include/libs/function/taosudf.h

@@ -277,6 +277,7 @@ typedef enum EUdfFuncType { UDF_FUNC_TYPE_SCALAR = 1, UDF_FUNC_TYPE_AGG = 2 } EU
 typedef struct SScriptUdfInfo {
   const char *name;
   int32_t version;
+  int64_t createdTime;
 
   EUdfFuncType funcType;
   int8_t       scriptType;

source/common/src/tmsg.c

@@ -1865,10 +1865,11 @@ int32_t tSerializeSRetrieveFuncRsp(void *buf, int32_t bufLen, SRetrieveFuncRsp *
     }
   }
 
-  if (pRsp->numOfFuncs != (int32_t)taosArrayGetSize(pRsp->pFuncVersions)) return -1;
+  if (pRsp->numOfFuncs != (int32_t)taosArrayGetSize(pRsp->pFuncExtraInfos)) return -1;
   for (int32_t i = 0; i < pRsp->numOfFuncs; ++i) {
-    int32_t version = *(int32_t*)taosArrayGet(pRsp->pFuncVersions, i);
-    if (tEncodeI32(&encoder, version) < 0) return -1;
+    SFuncExtraInfo *extraInfo = taosArrayGet(pRsp->pFuncExtraInfos, i);
+    if (tEncodeI32(&encoder, extraInfo->funcVersion) < 0) return -1;
+    if (tEncodeI64(&encoder, extraInfo->funcCreatedTime) < 0) return -1;
   }
 
   tEndEncode(&encoder);
@@ -1919,18 +1920,19 @@ int32_t tDeserializeSRetrieveFuncRsp(void *buf, int32_t bufLen, SRetrieveFuncRsp
     taosArrayPush(pRsp->pFuncInfos, &fInfo);
   }
 
-  pRsp->pFuncVersions = taosArrayInit(pRsp->numOfFuncs, sizeof(int32_t));
-  if (pRsp->pFuncVersions == NULL) return -1;
+  pRsp->pFuncExtraInfos = taosArrayInit(pRsp->numOfFuncs, sizeof(SFuncExtraInfo));
+  if (pRsp->pFuncExtraInfos == NULL) return -1;
   if (tDecodeIsEnd(&decoder)) {
     for (int32_t i = 0; i < pRsp->numOfFuncs; ++i) {
-      int32_t version = 0;
-      taosArrayPush(pRsp->pFuncVersions, &version);
+      SFuncExtraInfo  extraInfo  = { 0 };
+      taosArrayPush(pRsp->pFuncExtraInfos, &extraInfo);
     }
   } else {
     for (int32_t i = 0; i < pRsp->numOfFuncs; ++i) {
-      int32_t version = 0;
-      if (tDecodeI32(&decoder, &version) < 0) return -1;
-      taosArrayPush(pRsp->pFuncVersions, &version);
+      SFuncExtraInfo extraInfo = { 0 };
+      if (tDecodeI32(&decoder, &extraInfo.funcVersion) < 0) return -1;
+      if (tDecodeI64(&decoder, &extraInfo.funcCreatedTime) < 0) return -1;
+      taosArrayPush(pRsp->pFuncExtraInfos, &extraInfo);
     }
   }
   tEndDecode(&decoder);
@@ -1955,7 +1957,7 @@ void tFreeSRetrieveFuncRsp(SRetrieveFuncRsp *pRsp) {
     tFreeSFuncInfo(pInfo);
   }
   taosArrayDestroy(pRsp->pFuncInfos);
-  taosArrayDestroy(pRsp->pFuncVersions);
+  taosArrayDestroy(pRsp->pFuncExtraInfos);
 }
 
 int32_t tSerializeSTableCfgReq(void *buf, int32_t bufLen, STableCfgReq *pReq) {

source/dnode/mnode/impl/src/mndFunc.c

@@ -428,8 +428,8 @@ static int32_t mndProcessRetrieveFuncReq(SRpcMsg *pReq) {
     goto RETRIEVE_FUNC_OVER;
   }
 
-  retrieveRsp.pFuncVersions = taosArrayInit(retrieveReq.numOfFuncs, sizeof(int32_t));
-  if (retrieveRsp.pFuncVersions == NULL) {
+  retrieveRsp.pFuncExtraInfos = taosArrayInit(retrieveReq.numOfFuncs, sizeof(SFuncExtraInfo));
+  if (retrieveRsp.pFuncExtraInfos == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     goto RETRIEVE_FUNC_OVER;
   }
@@ -472,8 +472,10 @@ static int32_t mndProcessRetrieveFuncReq(SRpcMsg *pReq) {
       }
     }
     taosArrayPush(retrieveRsp.pFuncInfos, &funcInfo);
-
-    taosArrayPush(retrieveRsp.pFuncVersions, &pFunc->funcVersion);
+    SFuncExtraInfo extraInfo = {0};
+    extraInfo.funcVersion = pFunc->funcVersion;
+    extraInfo.funcCreatedTime = pFunc->createdTime;
+    taosArrayPush(retrieveRsp.pFuncExtraInfos, &pFunc->funcVersion);
 
     mndReleaseFunc(pMnode, pFunc);
   }

source/libs/catalog/test/catalogTests.cpp

@@ -672,14 +672,14 @@ void ctgTestRspUdfInfo(void *shandle, SEpSet *pEpSet, SRpcMsg *pMsg, SRpcMsg *pR
   SRetrieveFuncRsp funcRsp = {0};
   funcRsp.numOfFuncs = 1;
   funcRsp.pFuncInfos = taosArrayInit(1, sizeof(SFuncInfo));
-  funcRsp.pFuncVersions = taosArrayInit(1, sizeof(int32_t));
+  funcRsp.pFuncExtraInfos = taosArrayInit(1, sizeof(SFuncExtraInfo));
   SFuncInfo funcInfo = {0};
   strcpy(funcInfo.name, "func1");
   funcInfo.funcType = ctgTestFuncType;
     
   (void)taosArrayPush(funcRsp.pFuncInfos, &funcInfo);
-  int32_t version = 0;
-  (void)taosArrayPush(funcRsp.pFuncVersions, &version);
+  SFuncExtraInfo extraInfo = {.funcVersion = 1, .funcCreatedTime = taosGetTimestampMs()};
+  (void)taosArrayPush(funcRsp.pFuncExtraInfos, &extraInfo);
   
   int32_t rspLen = tSerializeSRetrieveFuncRsp(NULL, 0, &funcRsp);
   void   *pReq = rpcMallocCont(rspLen);

source/libs/function/src/udfd.c

@@ -53,7 +53,7 @@ int32_t udfdCPluginOpen(SScriptUdfEnvItem *items, int numItems) { return 0; }
 
 int32_t udfdCPluginClose() { return 0; }
 
-const char *udfdCPluginUdfInitLoadInitDestoryFuncs(SUdfCPluginCtx *udfCtx, const char* udfName) {
+const char *udfdCPluginUdfInitLoadInitDestoryFuncs(SUdfCPluginCtx *udfCtx, const char *udfName) {
   char  initFuncName[TSDB_FUNC_NAME_LEN + 5] = {0};
   char *initSuffix = "_init";
   strcpy(initFuncName, udfName);
@@ -100,7 +100,7 @@ int32_t udfdCPluginUdfInit(SScriptUdfInfo *udf, void **pUdfCtx) {
     fnError("can not load library %s. error: %s", udf->path, uv_strerror(err));
     return TSDB_CODE_UDF_LOAD_UDF_FAILURE;
   }
-  const char* udfName = udf->name;
+  const char *udfName = udf->name;
 
   udfdCPluginUdfInitLoadInitDestoryFuncs(udfCtx, udfName);
 
@@ -260,6 +260,7 @@ typedef enum { UDF_STATE_INIT = 0, UDF_STATE_LOADING, UDF_STATE_READY } EUdfStat
 typedef struct SUdf {
   char    name[TSDB_FUNC_NAME_LEN + 1];
   int32_t version;
+  int64_t createdTime;
 
   int8_t  funcType;
   int8_t  scriptType;
@@ -518,6 +519,7 @@ void convertUdf2UdfInfo(SUdf *udf, SScriptUdfInfo *udfInfo) {
   }
   udfInfo->name = udf->name;
   udfInfo->version = udf->version;
+  udfInfo->createdTime = udf->createdTime;
   udfInfo->outputLen = udf->outputLen;
   udfInfo->outputType = udf->outputType;
   udfInfo->path = udf->path;
@@ -527,9 +529,9 @@ void convertUdf2UdfInfo(SUdf *udf, SScriptUdfInfo *udfInfo) {
 int32_t udfdRenameUdfFile(SUdf *udf) {
   char newPath[PATH_MAX];
   if (udf->scriptType == TSDB_FUNC_SCRIPT_BIN_LIB) {
-    snprintf(newPath, PATH_MAX, "%s/lib%s_%d_%" PRIx64 ".so", tsDataDir, udf->name, udf->version, udf->lastFetchTime);
+    snprintf(newPath, PATH_MAX, "%s/lib%s_%d_%" PRIx64 ".so", tsDataDir, udf->name, udf->version, udf->createdTime);
   } else if (udf->scriptType == TSDB_FUNC_SCRIPT_PYTHON) {
-    snprintf(newPath, PATH_MAX, "%s/%s_%d_%" PRIx64 ".py", tsDataDir, udf->name, udf->version, udf->lastFetchTime);
+    snprintf(newPath, PATH_MAX, "%s/%s_%d_%" PRIx64 ".py", tsDataDir, udf->name, udf->version, udf->createdTime);
   } else {
     return TSDB_CODE_UDF_SCRIPT_NOT_SUPPORTED;
   }
@@ -805,7 +807,6 @@ void udfdProcessTeardownRequest(SUvUdfWork *uvUdf, SUdfRequest *request) {
     uv_mutex_destroy(&udf->lock);
     code = udf->scriptPlugin->udfDestroyFunc(udf->scriptUdfCtx);
     fnDebug("udfd destroy function returns %d", code);
-    taosRemoveFile(udf->path);
     taosMemoryFree(udf);
   }
   taosMemoryFree(handle);
@@ -835,22 +836,36 @@ int32_t udfdSaveFuncBodyToFile(SFuncInfo *pFuncInfo, SUdf *udf) {
 
   char path[PATH_MAX] = {0};
 #ifdef WINDOWS
-  snprintf(path, sizeof(path), "%s%s_%d_%" PRIx64, tsDataDir, pFuncInfo->name, udf->version, udf->lastFetchTime);
+  snprintf(path, sizeof(path), "%s%s_%d_%" PRIx64, tsDataDir, pFuncInfo->name, udf->version, udf->createdTime);
 #else
-  snprintf(path, sizeof(path), "%s/%s_%d_%" PRIx64, tsDataDir, pFuncInfo->name, udf->version, udf->lastFetchTime);
+  snprintf(path, sizeof(path), "%s/%s_%d_%" PRIx64, tsDataDir, pFuncInfo->name, udf->version, udf->createdTime);
 #endif
+
+  bool fileExist = !(taosStatFile(path, NULL, NULL) < 0);
+  if (fileExist) {
+    // TODO: error processing
+    TdFilePtr file = taosOpenFile(path, TD_FILE_READ);
+    int64_t   size = 0;
+    taosFStatFile(file, &size, NULL);
+    taosCloseFile(file);
+    if (size == pFuncInfo->codeSize) {
+      strncpy(udf->path, path, PATH_MAX);
+      return TSDB_CODE_SUCCESS;
+    }
+  }
+
   TdFilePtr file = taosOpenFile(path, TD_FILE_CREATE | TD_FILE_WRITE | TD_FILE_READ | TD_FILE_TRUNC);
   if (file == NULL) {
     fnError("udfd write udf shared library: %s failed, error: %d %s", path, errno, strerror(errno));
     return TSDB_CODE_FILE_CORRUPTED;
   }
-
   int64_t count = taosWriteFile(file, pFuncInfo->pCode, pFuncInfo->codeSize);
   if (count != pFuncInfo->codeSize) {
     fnError("udfd write udf shared library failed");
     return TSDB_CODE_FILE_CORRUPTED;
   }
   taosCloseFile(&file);
+
   strncpy(udf->path, path, PATH_MAX);
   return TSDB_CODE_SUCCESS;
 }
@@ -901,15 +916,17 @@ void udfdProcessRpcRsp(void *parent, SRpcMsg *pMsg, SEpSet *pEpSet) {
     udf->outputType = pFuncInfo->outputType;
     udf->outputLen = pFuncInfo->outputLen;
     udf->bufSize = pFuncInfo->bufSize;
-    udf->version = *(int32_t *)taosArrayGet(retrieveRsp.pFuncVersions, 0);
+    SFuncExtraInfo *pFuncExtraInfo = (SFuncExtraInfo *)taosArrayGet(retrieveRsp.pFuncExtraInfos, 0);
 
+    udf->version = pFuncExtraInfo->funcVersion;
+    udf->createdTime = pFuncExtraInfo->funcCreatedTime;
     msgInfo->code = udfdSaveFuncBodyToFile(pFuncInfo, udf);
     if (msgInfo->code != 0) {
       udf->lastFetchTime = 0;
     }
     tFreeSFuncInfo(pFuncInfo);
     taosArrayDestroy(retrieveRsp.pFuncInfos);
-    taosArrayDestroy(retrieveRsp.pFuncVersions);
+    taosArrayDestroy(retrieveRsp.pFuncExtraInfos);
   }
 
 _return:

source/libs/qcom/src/querymsg.c

@@ -587,7 +587,7 @@ int32_t queryProcessRetrieveFuncRsp(void *output, char *msg, int32_t msgSize) {
 
   memcpy(output, funcInfo, sizeof(*funcInfo));
   taosArrayDestroy(out.pFuncInfos);
-  taosArrayDestroy(out.pFuncVersions);
+  taosArrayDestroy(out.pFuncExtraInfos);
   
   return TSDB_CODE_SUCCESS;
 }