Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/2145#discussion_r68043825
--- Diff:
flink-core/src/main/java/org/apache/flink/metrics/reporter/JMXReporter.java ---
@@ -265,4 +329,72 @@ public Object getValue() {
return gauge.getValue();
}
}
+
+ /**
+ * JMX Server implementation that JMX clients can connect to.
+ *
+ * Heavily based on j256 simplejmx project
+ *
+ *
https://github.com/j256/simplejmx/blob/master/src/main/java/com/j256/simplejmx/server/JmxServer.java
+ */
+ private static class JMXServer {
+ private int port;
+ private Registry rmiRegistry;
+ private JMXConnectorServer connector;
+
+ public JMXServer(int port) {
+ this.port = port;
+ }
+
+ public void start() throws IOException {
+ startRmiRegistry();
+ startJmxService();
+ }
+
+ public void stop() throws IOException {
+ if (connector != null) {
+ try {
+ connector.stop();
+ } finally {
+ connector = null;
+ }
+ }
+ if (rmiRegistry != null) {
+ try {
+
UnicastRemoteObject.unexportObject(rmiRegistry, true);
+ } catch (NoSuchObjectException e) {
+ throw new IOException("Could not
unexport our RMI registry", e);
+ } finally {
+ rmiRegistry = null;
+ }
+ }
+ }
+
+ private void startRmiRegistry() throws IOException {
+ if (rmiRegistry != null) {
+ return;
+ }
+ rmiRegistry = LocateRegistry.createRegistry(port);
+ }
+
+ private void startJmxService() throws IOException {
+ if (connector != null) {
+ return;
+ }
+ String serverHost = "localhost";
+ String registryHost = "";
+ String serviceUrl =
+ "service:jmx:rmi://" + serverHost + ":" + port
+ "/jndi/rmi://" + registryHost + ":" + port + "/jmxrmi";
--- End diff --
Maybe we could try this out to know for sure.
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