dianfu commented on a change in pull request #11749:
[FLINK-16669][python][table] Support Python UDF in SQL function DDL.
URL: https://github.com/apache/flink/pull/11749#discussion_r409259319
##########
File path:
flink-python/src/main/java/org/apache/flink/client/python/PythonEnvUtils.java
##########
@@ -247,4 +257,90 @@ static Process startPythonProcess(PythonEnvironment
pythonEnv, List<String> comm
return process;
}
+
+ static void shutdownPythonProcess(Process pythonProcess, long
timeoutMillis) {
+ pythonProcess.destroy();
+ try {
+ pythonProcess.waitFor(timeoutMillis,
TimeUnit.MILLISECONDS);
+ } catch (InterruptedException e) {
+ throw new RuntimeException("Interrupt while waiting for
the python process to stop.", e);
+ }
+ if (pythonProcess.isAlive()) {
+ pythonProcess.destroyForcibly();
+ }
+ }
+
+ private static int findFreePort() throws IOException {
+ ServerSocket socket = new ServerSocket(0);
+ int port = socket.getLocalPort();
+ socket.close();
+ return port;
+ }
+
+ /**
+ * Creates a GatewayServer run in a daemon thread.
+ *
+ * @return The created GatewayServer
+ */
+ static GatewayServer startGatewayServer() throws ExecutionException,
InterruptedException {
+ CompletableFuture<GatewayServer> gatewayServer = new
CompletableFuture<>();
+ Thread thread = new Thread(() -> {
+ int freePort;
+ try {
+ freePort = findFreePort();
+ } catch (IOException e) {
+ throw new RuntimeException("Could not find a
free port for Py4jCallbackClient.");
+ }
+ GatewayServer server = new
GatewayServer.GatewayServerBuilder()
+ .gateway(new Gateway(new
ConcurrentHashMap<String, Object>(), new CallbackClient(freePort)))
+ .javaPort(0)
+ .build();
+ gatewayServer.complete(server);
+ server.start(true);
+ });
+ thread.setName("py4j-gateway");
+ thread.setDaemon(true);
+ thread.start();
+ thread.join();
+ return gatewayServer.get();
+ }
+
+ static Process launchPy4jPythonClient(
+ GatewayServer gatewayServer,
+ ReadableConfig config,
+ List<String> commands,
+ String entryPointScript,
+ String tmpDir) throws IOException {
+ PythonEnvUtils.PythonEnvironment pythonEnv =
PythonEnvUtils.preparePythonEnvironment(
Review comment:
Could remove the PythonEnvUtils prefix as the method is also in
PythonEnvUtils
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
With regards,
Apache Git Services
