rmahindra123 commented on code in PR #13851:
URL: https://github.com/apache/hudi/pull/13851#discussion_r2334472255
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hudi-common/src/main/java/org/apache/hudi/metrics/prometheus/PrometheusReporter.java:
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@@ -70,23 +103,39 @@ public PrometheusReporter(HoodieMetricsConfig
metricsConfig, MetricRegistry regi
});
}
metricExports = new DropwizardExports(registry, new
LabeledSampleBuilder(labelNames, labelValues));
- this.collectorRegistry = PORT_TO_COLLECTOR_REGISTRY.get(serverPort);
- metricExports.register(collectorRegistry);
+
+ synchronized (PrometheusReporter.class) {
+ PrometheusServerState serverState = PORT_TO_SERVER_STATE.get(serverPort);
+ this.collectorRegistry = serverState.getCollectorRegistry();
+ metricExports.register(collectorRegistry);
+ serverState.getExports().add(metricExports);
+ serverState.getReferenceCount().incrementAndGet();
+
+ LOG.debug("Registered PrometheusReporter for port {}, reference count:
{}",
+ serverPort, serverState.getReferenceCount().get());
+ }
}
- private static synchronized void startHttpServer(int serverPort) {
- if (!PORT_TO_COLLECTOR_REGISTRY.containsKey(serverPort)) {
- PORT_TO_COLLECTOR_REGISTRY.put(serverPort, new CollectorRegistry());
- }
- if (!PORT_TO_SERVER.containsKey(serverPort)) {
- try {
- HTTPServer server = new HTTPServer(new InetSocketAddress(serverPort),
PORT_TO_COLLECTOR_REGISTRY.get(serverPort), true);
- PORT_TO_SERVER.put(serverPort, server);
- Runtime.getRuntime().addShutdownHook(new Thread(server::stop));
- } catch (Exception e) {
- String msg = "Could not start PrometheusReporter HTTP server on port "
+ serverPort;
- LOG.error(msg, e);
- throw new HoodieException(msg, e);
+ private static void startHttpServer(int serverPort) {
Review Comment:
can we just use this method to get the serverState and if not available,
initialize and return the serverSate?
private synchronized static ServerState getServerState(int serverPort).
Then we can move the codes 108->116 here as well, and make it a single place
to take class level locks.
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