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From btell...@apache.org
Subject [05/13] james-project git commit: JAMES-2545 implement the healthcheck on top of channelpool
Date Fri, 14 Sep 2018 03:19:29 GMT
JAMES-2545 implement the healthcheck on top of channelpool


Project: http://git-wip-us.apache.org/repos/asf/james-project/repo
Commit: http://git-wip-us.apache.org/repos/asf/james-project/commit/b847583c
Tree: http://git-wip-us.apache.org/repos/asf/james-project/tree/b847583c
Diff: http://git-wip-us.apache.org/repos/asf/james-project/diff/b847583c

Branch: refs/heads/master
Commit: b847583c455ff7586e588f1f8a529b7fd548b536
Parents: 3313b53
Author: Matthieu Baechler <matthieu@apache.org>
Authored: Mon Sep 10 18:22:26 2018 +0200
Committer: Benoit Tellier <btellier@linagora.com>
Committed: Fri Sep 14 10:17:42 2018 +0700

----------------------------------------------------------------------
 .../backend/rabbitmq/RabbitChannelPool.java     | 16 +++++++++----
 .../backend/rabbitmq/RabbitMQHealthCheck.java   | 24 +++++++++-----------
 .../rabbitmq/RabbitMQHealthCheckTest.java       | 13 ++++++-----
 3 files changed, 29 insertions(+), 24 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/james-project/blob/b847583c/backends-common/rabbitmq/src/main/java/org/apache/james/backend/rabbitmq/RabbitChannelPool.java
----------------------------------------------------------------------
diff --git a/backends-common/rabbitmq/src/main/java/org/apache/james/backend/rabbitmq/RabbitChannelPool.java
b/backends-common/rabbitmq/src/main/java/org/apache/james/backend/rabbitmq/RabbitChannelPool.java
index c4a9fe6..f6f4154 100644
--- a/backends-common/rabbitmq/src/main/java/org/apache/james/backend/rabbitmq/RabbitChannelPool.java
+++ b/backends-common/rabbitmq/src/main/java/org/apache/james/backend/rabbitmq/RabbitChannelPool.java
@@ -30,6 +30,12 @@ import com.rabbitmq.client.Connection;
 
 public class RabbitChannelPool {
 
+    public static class ConnectionFailedException extends RuntimeException {
+        public ConnectionFailedException(Throwable cause) {
+            super(cause);
+        }
+    }
+
     private static class ChannelBasePooledObjectFactory extends BasePooledObjectFactory<Channel>
{
         private final Connection connection;
 
@@ -65,7 +71,7 @@ public class RabbitChannelPool {
             new ChannelBasePooledObjectFactory(connection));
     }
 
-    public <T, E extends Throwable> T execute(RabbitFunction<T, E> f) throws
E {
+    public <T, E extends Throwable> T execute(RabbitFunction<T, E> f) throws
E, ConnectionFailedException {
         Channel channel = borrowChannel();
         try {
             return f.execute(channel);
@@ -75,7 +81,7 @@ public class RabbitChannelPool {
     }
 
 
-    public <E extends Throwable> void execute(RabbitConsumer<E> f) throws E {
+    public <E extends Throwable> void execute(RabbitConsumer<E> f) throws E,
ConnectionFailedException {
         Channel channel = borrowChannel();
         try {
             f.execute(channel);
@@ -88,15 +94,15 @@ public class RabbitChannelPool {
         try {
             return pool.borrowObject();
         } catch (Exception e) {
-            throw new RuntimeException(e);
+            throw new ConnectionFailedException(e);
         }
     }
 
     private void returnChannel(Channel channel) {
         try {
             pool.returnObject(channel);
-        } catch (Exception e) {
-            throw new RuntimeException(e);
+        } catch (Exception ignore) {
+            //ignore when return is failing
         }
     }
 

http://git-wip-us.apache.org/repos/asf/james-project/blob/b847583c/backends-common/rabbitmq/src/main/java/org/apache/james/backend/rabbitmq/RabbitMQHealthCheck.java
----------------------------------------------------------------------
diff --git a/backends-common/rabbitmq/src/main/java/org/apache/james/backend/rabbitmq/RabbitMQHealthCheck.java
b/backends-common/rabbitmq/src/main/java/org/apache/james/backend/rabbitmq/RabbitMQHealthCheck.java
index b850e26..fd9f757 100644
--- a/backends-common/rabbitmq/src/main/java/org/apache/james/backend/rabbitmq/RabbitMQHealthCheck.java
+++ b/backends-common/rabbitmq/src/main/java/org/apache/james/backend/rabbitmq/RabbitMQHealthCheck.java
@@ -31,19 +31,15 @@ import org.apache.james.core.healthcheck.Result;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.rabbitmq.client.Connection;
-import com.rabbitmq.client.ConnectionFactory;
-
 public class RabbitMQHealthCheck implements HealthCheck {
     private static final Logger LOGGER = LoggerFactory.getLogger(RabbitMQHealthCheck.class);
     private static final ComponentName COMPONENT_NAME = new ComponentName("RabbitMQ backend");
 
-    private final ConnectionFactory connectionFactory;
+    private final RabbitChannelPool rabbitChannelPool;
 
     @Inject
-    public RabbitMQHealthCheck(RabbitMQConfiguration configuration) throws NoSuchAlgorithmException,
KeyManagementException, URISyntaxException {
-        this.connectionFactory = new ConnectionFactory();
-        this.connectionFactory.setUri(configuration.getUri());
+    public RabbitMQHealthCheck(RabbitChannelPool rabbitChannelPool) throws NoSuchAlgorithmException,
KeyManagementException, URISyntaxException {
+        this.rabbitChannelPool = rabbitChannelPool;
     }
 
     @Override
@@ -53,12 +49,14 @@ public class RabbitMQHealthCheck implements HealthCheck {
 
     @Override
     public Result check() {
-        try (Connection connection = connectionFactory.newConnection()) {
-            if (connection.isOpen()) {
-                return Result.healthy(COMPONENT_NAME);
-            }
-            LOGGER.error("The created connection was not opened");
-            return Result.unhealthy(COMPONENT_NAME);
+        try {
+            return rabbitChannelPool.execute(channel -> {
+                    if (channel.isOpen()) {
+                        return Result.healthy(COMPONENT_NAME);
+                    }
+                    LOGGER.error("The created connection was not opened");
+                    return Result.unhealthy(COMPONENT_NAME);
+            });
         } catch (Exception e) {
             LOGGER.error("Unhealthy RabbitMQ instances: could not establish a connection",
e);
             return Result.unhealthy(COMPONENT_NAME);

http://git-wip-us.apache.org/repos/asf/james-project/blob/b847583c/backends-common/rabbitmq/src/test/java/org/apache/james/backend/rabbitmq/RabbitMQHealthCheckTest.java
----------------------------------------------------------------------
diff --git a/backends-common/rabbitmq/src/test/java/org/apache/james/backend/rabbitmq/RabbitMQHealthCheckTest.java
b/backends-common/rabbitmq/src/test/java/org/apache/james/backend/rabbitmq/RabbitMQHealthCheckTest.java
index 4ba13fe..0938688 100644
--- a/backends-common/rabbitmq/src/test/java/org/apache/james/backend/rabbitmq/RabbitMQHealthCheckTest.java
+++ b/backends-common/rabbitmq/src/test/java/org/apache/james/backend/rabbitmq/RabbitMQHealthCheckTest.java
@@ -25,9 +25,12 @@ import java.net.URI;
 
 import org.apache.james.core.healthcheck.Result;
 import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 
+import com.rabbitmq.client.ConnectionFactory;
+
 @ExtendWith(DockerRabbitMQExtension.class)
 class RabbitMQHealthCheckTest {
     private RabbitMQHealthCheck healthCheck;
@@ -35,13 +38,10 @@ class RabbitMQHealthCheckTest {
     @BeforeEach
     void setUp(DockerRabbitMQ rabbitMQ) throws Exception {
         URI amqpUri = URI.create("amqp://" + rabbitMQ.getHostIp() + ":" + rabbitMQ.getPort());
-        URI managementUri = URI.create("http://" + rabbitMQ.getHostIp() + ":" + rabbitMQ.getAdminPort());
-
+        ConnectionFactory connectionFactory = new ConnectionFactory();
+        connectionFactory.setUri(amqpUri);
         healthCheck = new RabbitMQHealthCheck(
-            RabbitMQConfiguration.builder()
-                .amqpUri(amqpUri)
-                .managementUri(managementUri)
-                .build());
+            new RabbitChannelPool(connectionFactory.newConnection()));
     }
 
     @Test
@@ -61,6 +61,7 @@ class RabbitMQHealthCheckTest {
     }
 
     @Test
+    @Disabled("connection don't recover instantly, we should try several time (depending
on heartbeat rabbit conf")
     void checkShouldDetectWhenRabbitMQRecovered(DockerRabbitMQ rabbitMQ) throws Exception
{
         rabbitMQ.stopApp();
         healthCheck.check();


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