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Posted to commits@camel.apache.org by da...@apache.org on 2018/09/19 18:20:11 UTC
[camel] branch master updated: CAMEL-12822: camel-http4 exposes
client connection stats in JMX
This is an automated email from the ASF dual-hosted git repository.
davsclaus pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/camel.git
The following commit(s) were added to refs/heads/master by this push:
new c052f73 CAMEL-12822: camel-http4 exposes client connection stats in JMX
c052f73 is described below
commit c052f73abd9ad51e04987f69b931268d7c033ccf
Author: Claus Ibsen <cl...@gmail.com>
AuthorDate: Wed Sep 19 20:19:35 2018 +0200
CAMEL-12822: camel-http4 exposes client connection stats in JMX
---
.../apache/camel/component/http4/HttpEndpoint.java | 66 +++++++++++
.../http4/ManagedHttpProducerPoolStatsTest.java | 130 +++++++++++++++++++++
2 files changed, 196 insertions(+)
diff --git a/components/camel-http4/src/main/java/org/apache/camel/component/http4/HttpEndpoint.java b/components/camel-http4/src/main/java/org/apache/camel/component/http4/HttpEndpoint.java
index effcc93..c3bb606 100644
--- a/components/camel-http4/src/main/java/org/apache/camel/component/http4/HttpEndpoint.java
+++ b/components/camel-http4/src/main/java/org/apache/camel/component/http4/HttpEndpoint.java
@@ -26,6 +26,8 @@ import org.apache.camel.Consumer;
import org.apache.camel.PollingConsumer;
import org.apache.camel.Processor;
import org.apache.camel.Producer;
+import org.apache.camel.api.management.ManagedAttribute;
+import org.apache.camel.api.management.ManagedResource;
import org.apache.camel.http.common.HttpCommonEndpoint;
import org.apache.camel.http.common.HttpHelper;
import org.apache.camel.http.common.cookie.CookieHandler;
@@ -42,6 +44,8 @@ import org.apache.http.conn.HttpClientConnectionManager;
import org.apache.http.conn.ssl.DefaultHostnameVerifier;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.pool.ConnPoolControl;
+import org.apache.http.pool.PoolStats;
import org.apache.http.protocol.HttpContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@@ -51,6 +55,7 @@ import org.slf4j.LoggerFactory;
*/
@UriEndpoint(firstVersion = "2.3.0", scheme = "http4,https4", title = "HTTP4,HTTPS4", syntax = "http4:httpUri",
producerOnly = true, label = "http", lenientProperties = true)
+@ManagedResource(description = "Managed HttpEndpoint")
public class HttpEndpoint extends HttpCommonEndpoint {
private static final Logger LOG = LoggerFactory.getLogger(HttpEndpoint.class);
@@ -455,4 +460,65 @@ public class HttpEndpoint extends HttpCommonEndpoint {
this.socketTimeout = socketTimeout;
}
+ @ManagedAttribute(description = "Maximum number of allowed persistent connections")
+ public int getClientConnectionsPoolStatsMax() {
+ ConnPoolControl pool = null;
+ if (clientConnectionManager instanceof ConnPoolControl) {
+ pool = (ConnPoolControl) clientConnectionManager;
+ }
+ if (pool != null) {
+ PoolStats stats = pool.getTotalStats();
+ if (stats != null) {
+ return stats.getMax();
+ }
+ }
+ return -1;
+ }
+
+ @ManagedAttribute(description = "Number of available idle persistent connections")
+ public int getClientConnectionsPoolStatsAvailable() {
+ ConnPoolControl pool = null;
+ if (clientConnectionManager instanceof ConnPoolControl) {
+ pool = (ConnPoolControl) clientConnectionManager;
+ }
+ if (pool != null) {
+ PoolStats stats = pool.getTotalStats();
+ if (stats != null) {
+ return stats.getAvailable();
+ }
+ }
+ return -1;
+ }
+
+ @ManagedAttribute(description = "Number of persistent connections tracked by the connection manager currently being used to execute requests")
+ public int getClientConnectionsPoolStatsLeased() {
+ ConnPoolControl pool = null;
+ if (clientConnectionManager instanceof ConnPoolControl) {
+ pool = (ConnPoolControl) clientConnectionManager;
+ }
+ if (pool != null) {
+ PoolStats stats = pool.getTotalStats();
+ if (stats != null) {
+ return stats.getLeased();
+ }
+ }
+ return -1;
+ }
+
+ @ManagedAttribute(description = "Number of connection requests being blocked awaiting a free connection."
+ + " This can happen only if there are more worker threads contending for fewer connections.")
+ public int getClientConnectionsPoolStatsPending() {
+ ConnPoolControl pool = null;
+ if (clientConnectionManager instanceof ConnPoolControl) {
+ pool = (ConnPoolControl) clientConnectionManager;
+ }
+ if (pool != null) {
+ PoolStats stats = pool.getTotalStats();
+ if (stats != null) {
+ return stats.getPending();
+ }
+ }
+ return -1;
+ }
+
}
diff --git a/components/camel-http4/src/test/java/org/apache/camel/component/http4/ManagedHttpProducerPoolStatsTest.java b/components/camel-http4/src/test/java/org/apache/camel/component/http4/ManagedHttpProducerPoolStatsTest.java
new file mode 100644
index 0000000..5dc5171
--- /dev/null
+++ b/components/camel-http4/src/test/java/org/apache/camel/component/http4/ManagedHttpProducerPoolStatsTest.java
@@ -0,0 +1,130 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.http4;
+
+import java.io.IOException;
+
+import javax.management.MBeanServer;
+import javax.management.ObjectName;
+
+import org.apache.camel.Exchange;
+import org.apache.camel.Processor;
+import org.apache.http.HttpException;
+import org.apache.http.HttpRequest;
+import org.apache.http.HttpResponse;
+import org.apache.http.HttpStatus;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.impl.bootstrap.HttpServer;
+import org.apache.http.impl.bootstrap.ServerBootstrap;
+import org.apache.http.protocol.HttpContext;
+import org.apache.http.protocol.HttpRequestHandler;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+public class ManagedHttpProducerPoolStatsTest extends BaseHttpTest {
+
+ private HttpServer localServer;
+
+ @Override
+ protected boolean useJmx() {
+ return true;
+ }
+
+ @Before
+ @Override
+ public void setUp() throws Exception {
+ localServer = ServerBootstrap.bootstrap().
+ setHttpProcessor(getBasicHttpProcessor()).
+ setConnectionReuseStrategy(getConnectionReuseStrategy()).
+ setResponseFactory(getHttpResponseFactory()).
+ setExpectationVerifier(getHttpExpectationVerifier()).
+ setSslContext(getSSLContext()).
+ registerHandler("/myapp", new HttpRequestHandler() {
+ @Override
+ public void handle(HttpRequest request, HttpResponse response, HttpContext context) throws HttpException, IOException {
+ response.setEntity(new StringEntity("OK", "ASCII"));
+ response.setStatusCode(HttpStatus.SC_OK);
+ }
+ }).create();
+ localServer.start();
+
+ super.setUp();
+ }
+
+ @After
+ @Override
+ public void tearDown() throws Exception {
+ super.tearDown();
+
+ if (localServer != null) {
+ localServer.stop();
+ }
+ }
+
+ @Test
+ public void testPoolStats() throws Exception {
+ // turn on registering jmx always so the producer is also registered
+ context.getManagementStrategy().getManagementAgent().setRegisterAlways(true);
+
+ String uri = "http4://" + localServer.getInetAddress().getHostName() + ":" + localServer.getLocalPort() + "/myapp";
+
+ Exchange out = template.request(uri, new Processor() {
+ public void process(Exchange exchange) throws Exception {
+ exchange.getIn().setBody("Hello World");
+ }
+ });
+
+ assertNotNull(out);
+ assertEquals("OK", out.getOut().getBody(String.class));
+
+ // look up stats
+ HttpEndpoint http = context.getEndpoint(uri, HttpEndpoint.class);
+ assertNotNull(http);
+
+ int max = http.getClientConnectionsPoolStatsMax();
+ int avail = http.getClientConnectionsPoolStatsAvailable();
+ int leased = http.getClientConnectionsPoolStatsLeased();
+ int pending = http.getClientConnectionsPoolStatsPending();
+
+ assertEquals(200, max);
+ assertEquals(1, avail);
+ assertEquals(0, leased);
+ assertEquals(0, pending);
+
+ // should be in JMX too
+ MBeanServer mbeanServer = getMBeanServer();
+ String id = context.getManagementName();
+ ObjectName on = ObjectName.getInstance("org.apache.camel:context=" + id + ",type=endpoints,name=\"" + uri + "\"");
+ assertTrue(mbeanServer.isRegistered(on));
+
+ max = (int) mbeanServer.getAttribute(on, "ClientConnectionsPoolStatsMax");
+ assertEquals(200, max);
+ avail = (int) mbeanServer.getAttribute(on, "ClientConnectionsPoolStatsAvailable");
+ assertEquals(1, avail);
+ leased = (int) mbeanServer.getAttribute(on, "ClientConnectionsPoolStatsLeased");
+ assertEquals(0, leased);
+ pending = (int) mbeanServer.getAttribute(on, "ClientConnectionsPoolStatsPending");
+ assertEquals(0, pending);
+ }
+
+ protected MBeanServer getMBeanServer() {
+ return context.getManagementStrategy().getManagementAgent().getMBeanServer();
+ }
+
+
+}