yanghua commented on a change in pull request #7263: [FLINK-11081] Support binding port range for REST server URL: https://github.com/apache/flink/pull/7263#discussion_r240859949
########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/rest/RestServerEndpoint.java ########## @@ -181,14 +184,44 @@ protected void initChannel(SocketChannel ch) { .channel(NioServerSocketChannel.class) .childHandler(initializer); - log.debug("Binding rest endpoint to {}:{}.", restBindAddress, restBindPort); - final ChannelFuture channel; - if (restBindAddress == null) { - channel = bootstrap.bind(restBindPort); - } else { - channel = bootstrap.bind(restBindAddress, restBindPort); + ChannelFuture channel; + + // parse port range definition and create port iterator + Iterator<Integer> portsIterator; + try { + portsIterator = NetUtils.getPortRangeFromString(restBindPort); + } catch (Exception e) { + throw new IllegalArgumentException("Invalid port range definition: " + restBindPort); + } + + int chosenPort = 0; + while (portsIterator.hasNext()) { + try { + chosenPort = portsIterator.next(); + if (restBindAddress == null) { + channel = bootstrap.bind(chosenPort); + } else { + channel = bootstrap.bind(restBindAddress, chosenPort); + } + serverChannel = channel.syncUninterruptibly().channel(); + break; + } catch (Exception e) { + // we can continue to try if this contains a netty channel exception + Throwable cause = e.getCause(); + if (!(cause instanceof org.jboss.netty.channel.ChannelException || + cause instanceof java.net.BindException)) { + throw e; Review comment: Here, we just retry when the exception is a port conflict specific exception. If not, it seems we should throw it and let the caller know there is another exception. Also, see `BootstrapTools#startActorSystem`. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on 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