feature(udf): pipe is placed under datadir and remove it after udfd exist and is hidden

source/libs/function/src/tudf.c

@@ -127,7 +127,7 @@ enum {
 
 int64_t gUdfTaskSeqNum = 0;
 typedef struct SUdfdProxy {
-  char udfdPipeName[UDF_LISTEN_PIPE_NAME_LEN];
+  char udfdPipeName[PATH_MAX + UDF_LISTEN_PIPE_NAME_LEN + 2];
   uv_barrier_t gUdfInitBarrier;
 
   uv_loop_t gUdfdLoop;
@@ -224,9 +224,15 @@ int32_t getUdfdPipeName(char* pipeName, int32_t size) {
   size_t  dnodeIdSize = sizeof(dnodeId);
   int32_t err = uv_os_getenv(UDF_DNODE_ID_ENV_NAME, dnodeId, &dnodeIdSize);
   if (err != 0) {
+    fnError("get dnode id from env. error: %s.", uv_err_name(err));
     dnodeId[0] = '1';
   }
+#ifdef _WIN32
   snprintf(pipeName, size, "%s%s", UDF_LISTEN_PIPE_NAME_PREFIX, dnodeId);
+#else
+  snprintf(pipeName, size, "%s/%s%s", tsDataDir, UDF_LISTEN_PIPE_NAME_PREFIX, dnodeId);
+#endif
+  fnInfo("get dnode id from env. dnode id: %s. pipe path: %s", dnodeId, pipeName);
   return 0;
 }
 
@@ -998,7 +1004,7 @@ int32_t udfcOpen() {
     return 0;
   }
   SUdfdProxy *proxy = &gUdfdProxy;
-  getUdfdPipeName(proxy->udfdPipeName, UDF_LISTEN_PIPE_NAME_LEN);
+  getUdfdPipeName(proxy->udfdPipeName, sizeof(proxy->udfdPipeName));
   proxy->gUdfcState = UDFC_STATE_STARTNG;
   uv_barrier_init(&proxy->gUdfInitBarrier, 2);
   uv_thread_create(&proxy->gUdfLoopThread, constructUdfService, proxy);

source/libs/function/src/udfd.c

@@ -30,7 +30,7 @@ typedef struct SUdfdContext {
   uv_loop_t  *loop;
   uv_pipe_t   ctrlPipe;
   uv_signal_t intrSignal;
-  char        listenPipeName[UDF_LISTEN_PIPE_NAME_LEN];
+  char        listenPipeName[PATH_MAX + UDF_LISTEN_PIPE_NAME_LEN + 2];
   uv_pipe_t   listeningPipe;
 
   void       *clientRpc;
@@ -652,7 +652,7 @@ static int32_t udfdUvInit() {
   uv_pipe_open(&global.ctrlPipe, 0);
   uv_read_start((uv_stream_t *)&global.ctrlPipe, udfdCtrlAllocBufCb, udfdCtrlReadCb);
 
-  getUdfdPipeName(global.listenPipeName, UDF_LISTEN_PIPE_NAME_LEN);
+  getUdfdPipeName(global.listenPipeName, sizeof(global.listenPipeName));
 
   removeListeningPipe();
 
@@ -696,6 +696,7 @@ static int32_t udfdRun() {
   fnInfo("udfd stopped. result: %s, code: %d", uv_err_name(code), code);
   int codeClose = uv_loop_close(global.loop);
   fnDebug("uv loop close. result: %s", uv_err_name(codeClose));
+  removeListeningPipe();
   udfdCloseClientRpc();
   uv_mutex_destroy(&global.udfsMutex);
   taosHashCleanup(global.udfsHash);