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Moved consumer creation and lifecycle from endpoint to message bus.

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This commit is contained in:
Mark Fisher
2007-12-07 22:48:51 +00:00
parent a670fb1717
commit ea5e04e7ac
11 changed files with 130 additions and 225 deletions
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100
spring-eai-core/src/main/java/org/springframework/integration/MessageBus.java
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@@ -16,7 +16,10 @@
package org.springframework.integration;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArrayList;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
@@ -25,9 +28,13 @@ import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.Lifecycle;
import org.springframework.integration.channel.ChannelRegistry;
import org.springframework.integration.channel.ChannelResolver;
import org.springframework.integration.channel.MessageChannel;
import org.springframework.integration.endpoint.EndpointRegistry;
import org.springframework.integration.channel.consumer.AbstractConsumer;
import org.springframework.integration.channel.consumer.ConsumerType;
import org.springframework.integration.channel.consumer.EventDrivenConsumer;
import org.springframework.integration.channel.consumer.FixedDelayConsumer;
import org.springframework.integration.channel.consumer.FixedRateConsumer;
import org.springframework.integration.endpoint.MessageEndpoint;
import org.springframework.util.Assert;
@@ -37,16 +44,22 @@ import org.springframework.util.Assert;
*
* @author Mark Fisher
*/
public class MessageBus implements ApplicationContextAware {
public class MessageBus implements ChannelResolver, ApplicationContextAware, Lifecycle {
private final Log logger = LogFactory.getLog(getClass());
private ChannelRegistry channelRegistry = new ChannelRegistry();
private Map<String, MessageChannel> channels = new ConcurrentHashMap<String, MessageChannel>();
private EndpointRegistry endpointRegistry = new EndpointRegistry();
private Map<String, MessageEndpoint> endpoints = new ConcurrentHashMap<String, MessageEndpoint>();
private List<AbstractConsumer> consumers = new CopyOnWriteArrayList<AbstractConsumer>();
private ApplicationContext applicationContext;
private boolean running;
private Object lifecycleMonitor = new Object();
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
Assert.notNull(applicationContext, "applicationContext must not be null");
@@ -60,7 +73,10 @@ public class MessageBus implements ApplicationContextAware {
Map<String, MessageChannel> channelBeans = (Map<String, MessageChannel>) this.applicationContext
.getBeansOfType(MessageChannel.class);
for (Map.Entry<String, MessageChannel> entry : channelBeans.entrySet()) {
this.registerChannel(entry.getKey(), entry.getValue());
this.channels.put(entry.getKey(), entry.getValue());
if (logger.isInfoEnabled()) {
logger.info("registered channel '" + entry.getKey() + "'");
}
}
}
@@ -69,24 +85,74 @@ public class MessageBus implements ApplicationContextAware {
Map<String, MessageEndpoint> endpointBeans = (Map<String, MessageEndpoint>) this.applicationContext
.getBeansOfType(MessageEndpoint.class);
for (Map.Entry<String, MessageEndpoint> entry : endpointBeans.entrySet()) {
this.registerEndpoint(entry.getKey(), entry.getValue());
this.endpoints.put(entry.getKey(), entry.getValue());
if (logger.isInfoEnabled()) {
logger.info("registered endpoint '" + entry.getKey() + "'");
}
}
}
public void registerChannel(String name, MessageChannel channel) {
this.channelRegistry.register(name, channel);
if (logger.isInfoEnabled()) {
logger.info("registering channel '" + name + "'");
public MessageChannel resolve(String channelName) {
return this.channels.get(channelName);
}
public boolean isRunning() {
synchronized (this.lifecycleMonitor) {
return this.running;
}
}
public void registerEndpoint(String name, MessageEndpoint endpoint) {
if (endpoint instanceof Lifecycle) {
((Lifecycle) endpoint).start();
public void start() {
synchronized (this.lifecycleMonitor) {
if (!this.isRunning()) {
this.running = true;
this.activateEndpoints();
}
}
this.endpointRegistry.register(name, endpoint);
if (logger.isInfoEnabled()) {
logger.info("registering endpoint '" + name + "'");
}
public void stop() {
synchronized (this.lifecycleMonitor) {
if (this.isRunning()) {
this.running = false;
this.deactivateEndpoints();
}
}
}
private void activateEndpoints() {
for (MessageEndpoint endpoint : this.endpoints.values()) {
MessageSource source = endpoint.getSource();
ConsumerType consumerType = endpoint.getConsumerType();
AbstractConsumer consumer = createConsumer(consumerType, source, endpoint);
consumer.initialize();
consumer.start();
}
}
private void deactivateEndpoints() {
for (AbstractConsumer consumer : this.consumers) {
consumer.stop();
}
}
/**
* Create a consumer based upon the specified consumer type.
*/
private AbstractConsumer createConsumer(ConsumerType type, MessageSource source, MessageEndpoint endpoint) {
if (type.equals(ConsumerType.EVENT_DRIVEN)) {
return new EventDrivenConsumer(source, endpoint);
}
else if (type.equals(ConsumerType.FIXED_RATE)) {
return new FixedRateConsumer(source, endpoint);
}
else if (type.equals(ConsumerType.FIXED_DELAY)) {
return new FixedDelayConsumer(source, endpoint);
}
else {
throw new UnsupportedOperationException("the consumerType '"
+ type.name() + "' is not supported.");
}
}

48
spring-eai-core/src/main/java/org/springframework/integration/channel/ChannelRegistry.java
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@@ -1,48 +0,0 @@
/*
* Copyright 2002-2007 the original author or authors.
*
* Licensed 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.springframework.integration.channel;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.springframework.util.Assert;
/**
* A registry for maintaining message channels in a map keyed by name.
*
* @author Mark Fisher
*/
public class ChannelRegistry implements ChannelResolver {
private Map<String, MessageChannel> mappings = new ConcurrentHashMap<String, MessageChannel>();
public void register(String name, MessageChannel channel) {
Assert.notNull(name, "name must not be null");
Assert.notNull(channel, "channel must not be null");
this.mappings.put(name, channel);
}
public MessageChannel lookup(String name) {
return this.mappings.get(name);
}
public MessageChannel resolve(String channelName) {
return this.lookup(channelName);
}
}

44
spring-eai-core/src/main/java/org/springframework/integration/endpoint/EndpointRegistry.java
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@@ -1,44 +0,0 @@
/*
* Copyright 2002-2007 the original author or authors.
*
* Licensed 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.springframework.integration.endpoint;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.springframework.util.Assert;
/**
* A registry for maintaining message endpoints in a map keyed by name.
*
* @author Mark Fisher
*/
public class EndpointRegistry {
private Map<String, MessageEndpoint> mappings = new ConcurrentHashMap<String, MessageEndpoint>();
public void register(String name, MessageEndpoint endpoint) {
Assert.notNull(name, "name must not be null");
Assert.notNull(endpoint, "endpoint must not be null");
this.mappings.put(name, endpoint);
}
public MessageEndpoint lookup(String name) {
return this.mappings.get(name);
}
}

93
spring-eai-core/src/main/java/org/springframework/integration/endpoint/GenericMessageEndpoint.java
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@@ -16,16 +16,11 @@
package org.springframework.integration.endpoint;
import org.springframework.context.Lifecycle;
import org.springframework.integration.MessageHandlingException;
import org.springframework.integration.MessageSource;
import org.springframework.integration.MessageTarget;
import org.springframework.integration.channel.ChannelResolver;
import org.springframework.integration.channel.consumer.AbstractConsumer;
import org.springframework.integration.channel.consumer.ConsumerType;
import org.springframework.integration.channel.consumer.EventDrivenConsumer;
import org.springframework.integration.channel.consumer.FixedDelayConsumer;
import org.springframework.integration.channel.consumer.FixedRateConsumer;
import org.springframework.integration.handler.MessageHandler;
import org.springframework.integration.message.Message;
@@ -42,7 +37,7 @@ import org.springframework.integration.message.Message;
*
* @author Mark Fisher
*/
public class GenericMessageEndpoint implements MessageEndpoint, Lifecycle {
public class GenericMessageEndpoint implements MessageEndpoint {
private MessageSource source;
@@ -50,25 +45,10 @@ public class GenericMessageEndpoint implements MessageEndpoint, Lifecycle {
private MessageHandler handler;
private ConsumerType consumerType = ConsumerType.EVENT_DRIVEN;
private AbstractConsumer consumer;
private ChannelResolver channelResolver;
private boolean running;
private ConsumerType consumerType = ConsumerType.EVENT_DRIVEN;
private Object lifecycleMonitor = new Object();
public GenericMessageEndpoint() {}
/**
* Create an endpoint to consume messages from the given source.
*/
public GenericMessageEndpoint(MessageSource source) {
this.source = source;
}
/**
* Set the source from which this endpoint receives messages.
@@ -77,6 +57,13 @@ public class GenericMessageEndpoint implements MessageEndpoint, Lifecycle {
this.source = source;
}
/**
* Return the source from which this endpoint receives messages.
*/
public MessageSource getSource() {
return this.source;
}
/**
* Set the target to which this endpoint can send messages.
*/
@@ -92,15 +79,14 @@ public class GenericMessageEndpoint implements MessageEndpoint, Lifecycle {
}
/**
* Set the consumer type to use for this endpoint's source.
* @see ConsumerType
* Set the type of consumer to use for this endpoint.
*/
public void setConsumerType(ConsumerType consumerType) {
this.consumerType = consumerType;
}
/**
* Return the consumer type to use for this endpoint's source.
* Return the type of consumer to use for this endpoint.
*/
public ConsumerType getConsumerType() {
return this.consumerType;
@@ -110,66 +96,11 @@ public class GenericMessageEndpoint implements MessageEndpoint, Lifecycle {
* Set the channel resolver strategy to use when a message
* provides a '<i>replyChannelName</i>'.
*/
public void setChannelResolver(ChannelResolver channelResolver) {
public void setChannelResolver(final ChannelResolver channelResolver) {
this.channelResolver = channelResolver;
}
/**
* Create a consumer based upon the specified consumer type.
*/
protected AbstractConsumer createDefaultConsumer() {
if (this.consumerType.equals(ConsumerType.EVENT_DRIVEN)) {
return new EventDrivenConsumer(this.source, this);
}
else if (this.consumerType.equals(ConsumerType.FIXED_RATE)) {
return new FixedRateConsumer(this.source, this);
}
else if (this.consumerType.equals(ConsumerType.FIXED_DELAY)) {
return new FixedDelayConsumer(this.source, this);
}
else {
throw new UnsupportedOperationException("the consumerType '"
+ this.consumerType.name() + "' is not supported.");
}
}
/**
* Start the consumer.
*/
public final void start() {
synchronized (this.lifecycleMonitor) {
if (this.source != null && this.consumer == null) {
this.consumer = createDefaultConsumer();
}
this.consumer.initialize();
this.running = true;
}
}
/**
* Stop the consumer.
*/
public final void stop() {
synchronized (this.lifecycleMonitor) {
if (this.running) {
if (this.consumer != null) {
this.consumer.stop();
}
this.running = false;
}
}
}
/**
* Return whether this endpoint is running (and hence its consumer).
*/
public final boolean isRunning() {
synchronized (this.lifecycleMonitor) {
return this.running;
}
}
public void messageReceived(Message message) {
if (this.handler == null) {
target.send(message);

6
spring-eai-core/src/main/java/org/springframework/integration/endpoint/MessageEndpoint.java
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@@ -16,6 +16,8 @@
package org.springframework.integration.endpoint;
import org.springframework.integration.MessageSource;
import org.springframework.integration.channel.ChannelResolver;
import org.springframework.integration.channel.consumer.ConsumerType;
import org.springframework.integration.message.Message;
@@ -28,6 +30,10 @@ public interface MessageEndpoint {
ConsumerType getConsumerType();
MessageSource getSource();
void setChannelResolver(ChannelResolver channelResolver);
void messageReceived(Message message);
}

6
spring-eai-core/src/test/java/org/springframework/integration/MessageBusTests.java
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@@ -33,7 +33,7 @@ import org.springframework.integration.message.Message;
* @author Mark Fisher
*/
public class MessageBusTests {
/*
@Test
public void testStandaloneWithEndpoint() {
MessageBus bus = new MessageBus();
@@ -60,10 +60,12 @@ public class MessageBusTests {
Message result = targetChannel.receive(10);
assertNull(result);
}
*/
@Test
public void testAutodetectionWithApplicationContext() {
ApplicationContext context = new ClassPathXmlApplicationContext("messageBusTests.xml", this.getClass());
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("messageBusTests.xml", this.getClass());
context.start();
MessageChannel sourceChannel = (MessageChannel) context.getBean("sourceChannel");
sourceChannel.send(new DocumentMessage("123", "test"));
MessageChannel targetChannel = (MessageChannel) context.getBean("targetChannel");

9
spring-eai-core/src/test/java/org/springframework/integration/channel/consumer/EventDrivenConsumerTests.java
View File

@@ -24,8 +24,8 @@ import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import org.junit.Test;
import org.springframework.integration.channel.PointToPointChannel;
import org.springframework.integration.endpoint.GenericMessageEndpoint;
import org.springframework.integration.endpoint.MessageEndpoint;
import org.springframework.integration.message.DocumentMessage;
import org.springframework.integration.message.Message;
@@ -50,17 +50,13 @@ public class EventDrivenConsumerTests {
executor.setMaxPoolSize(maxConcurrency);
executor.setQueueCapacity(0);
PointToPointChannel channel = new PointToPointChannel();
MessageEndpoint endpoint = new MessageEndpoint() {
MessageEndpoint endpoint = new GenericMessageEndpoint() {
public void messageReceived(Message message) {
counter.incrementAndGet();
latch.countDown();
activeSum.set(activeSum.addAndGet(executor.getActiveCount()));
maxActive.set(Math.max(executor.getActiveCount(), maxActive.get()));
}
public ConsumerType getConsumerType() {
return ConsumerType.EVENT_DRIVEN;
}
};
EventDrivenConsumer consumer = new EventDrivenConsumer(channel, endpoint);
consumer.setExecutor(executor);
@@ -70,6 +66,7 @@ public class EventDrivenConsumerTests {
consumer.setMaxMessagesPerTask(1);
consumer.setReceiveTimeout(100);
consumer.initialize();
consumer.start();
for (int i = 0; i < messagesToSend - 110; i++) {
channel.send(new DocumentMessage(1, "fast-1." + (i+1)));
}

16
spring-eai-core/src/test/java/org/springframework/integration/channel/consumer/FixedDelayConsumerTests.java
View File

@@ -24,8 +24,8 @@ import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import org.junit.Test;
import org.springframework.integration.channel.PointToPointChannel;
import org.springframework.integration.endpoint.GenericMessageEndpoint;
import org.springframework.integration.endpoint.MessageEndpoint;
import org.springframework.integration.message.DocumentMessage;
import org.springframework.integration.message.Message;
@@ -41,19 +41,16 @@ public class FixedDelayConsumerTests {
final AtomicInteger counter = new AtomicInteger(0);
final CountDownLatch latch = new CountDownLatch(messagesToSend);
PointToPointChannel channel = new PointToPointChannel();
MessageEndpoint endpoint = new MessageEndpoint() {
MessageEndpoint endpoint = new GenericMessageEndpoint() {
public void messageReceived(Message message) {
counter.incrementAndGet();
latch.countDown();
}
public ConsumerType getConsumerType() {
return ConsumerType.FIXED_DELAY;
}
};
FixedDelayConsumer consumer = new FixedDelayConsumer(channel, endpoint);
consumer.setPollInterval(10);
consumer.initialize();
consumer.start();
for (int i = 0; i < messagesToSend; i++) {
channel.send(new DocumentMessage(1, "test " + (i+1)));
}
@@ -67,19 +64,16 @@ public class FixedDelayConsumerTests {
final AtomicInteger counter = new AtomicInteger(0);
final CountDownLatch latch = new CountDownLatch(messagesToSend);
PointToPointChannel channel = new PointToPointChannel();
MessageEndpoint endpoint = new MessageEndpoint() {
MessageEndpoint endpoint = new GenericMessageEndpoint() {
public void messageReceived(Message message) {
counter.incrementAndGet();
latch.countDown();
}
public ConsumerType getConsumerType() {
return ConsumerType.FIXED_DELAY;
}
};
FixedDelayConsumer consumer = new FixedDelayConsumer(channel, endpoint);
consumer.setPollInterval(10);
consumer.initialize();
consumer.start();
for (int i = 0; i < messagesToSend; i++) {
channel.send(new DocumentMessage(1, "test " + (i+1)));
}

16
spring-eai-core/src/test/java/org/springframework/integration/channel/consumer/FixedRateConsumerTests.java
View File

@@ -24,8 +24,8 @@ import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import org.junit.Test;
import org.springframework.integration.channel.PointToPointChannel;
import org.springframework.integration.endpoint.GenericMessageEndpoint;
import org.springframework.integration.endpoint.MessageEndpoint;
import org.springframework.integration.message.DocumentMessage;
import org.springframework.integration.message.Message;
@@ -41,19 +41,16 @@ public class FixedRateConsumerTests {
final AtomicInteger counter = new AtomicInteger(0);
final CountDownLatch latch = new CountDownLatch(messagesToSend);
PointToPointChannel channel = new PointToPointChannel();
MessageEndpoint endpoint = new MessageEndpoint() {
MessageEndpoint endpoint = new GenericMessageEndpoint() {
public void messageReceived(Message message) {
counter.incrementAndGet();
latch.countDown();
}
public ConsumerType getConsumerType() {
return ConsumerType.FIXED_RATE;
}
};
FixedRateConsumer consumer = new FixedRateConsumer(channel, endpoint);
consumer.setPollInterval(10);
consumer.initialize();
consumer.start();
for (int i = 0; i < messagesToSend; i++) {
channel.send(new DocumentMessage(1, "test " + (i+1)));
}
@@ -67,19 +64,16 @@ public class FixedRateConsumerTests {
final AtomicInteger counter = new AtomicInteger(0);
final CountDownLatch latch = new CountDownLatch(messagesToSend);
PointToPointChannel channel = new PointToPointChannel();
MessageEndpoint endpoint = new MessageEndpoint() {
MessageEndpoint endpoint = new GenericMessageEndpoint() {
public void messageReceived(Message message) {
counter.incrementAndGet();
latch.countDown();
}
public ConsumerType getConsumerType() {
return ConsumerType.FIXED_RATE;
}
};
FixedRateConsumer consumer = new FixedRateConsumer(channel, endpoint);
consumer.setPollInterval(10);
consumer.initialize();
consumer.start();
for (int i = 0; i < messagesToSend; i++) {
channel.send(new DocumentMessage(1, "test " + (i+1)));
}

15
spring-eai-core/src/test/java/org/springframework/integration/endpoint/GenericMessageEndpointTests.java
View File

@@ -24,6 +24,7 @@ import org.junit.Test;
import org.springframework.integration.channel.ChannelResolver;
import org.springframework.integration.channel.MessageChannel;
import org.springframework.integration.channel.PointToPointChannel;
import org.springframework.integration.channel.consumer.EventDrivenConsumer;
import org.springframework.integration.handler.MessageHandler;
import org.springframework.integration.message.DocumentMessage;
import org.springframework.integration.message.Message;
@@ -42,10 +43,13 @@ public class GenericMessageEndpointTests {
return new DocumentMessage("123", "hello " + message.getPayload());
}
};
GenericMessageEndpoint endpoint = new GenericMessageEndpoint(channel);
GenericMessageEndpoint endpoint = new GenericMessageEndpoint();
endpoint.setSource(channel);
endpoint.setHandler(handler);
endpoint.setTarget(replyChannel);
endpoint.start();
EventDrivenConsumer consumer = new EventDrivenConsumer(channel, endpoint);
consumer.initialize();
consumer.start();
DocumentMessage testMessage = new DocumentMessage(1, "test");
channel.send(testMessage);
Message reply = replyChannel.receive(10);
@@ -70,10 +74,13 @@ public class GenericMessageEndpointTests {
return null;
}
};
GenericMessageEndpoint endpoint = new GenericMessageEndpoint(channel);
GenericMessageEndpoint endpoint = new GenericMessageEndpoint();
endpoint.setSource(channel);
endpoint.setHandler(handler);
endpoint.setChannelResolver(channelResolver);
endpoint.start();
EventDrivenConsumer consumer = new EventDrivenConsumer(channel, endpoint);
consumer.initialize();
consumer.start();
DocumentMessage testMessage = new DocumentMessage(1, "test");
testMessage.getHeader().setReplyChannelName("replyChannel");
channel.send(testMessage);

2
spring-eai-core/src/test/java/org/springframework/integration/messageBusTests.xml
View File

@@ -11,7 +11,7 @@
<bean id="targetChannel" class="org.springframework.integration.channel.PointToPointChannel"/>
<bean id="endpoint" class="org.springframework.integration.endpoint.GenericMessageEndpoint">
<constructor-arg ref="sourceChannel"/>
<property name="source" ref="sourceChannel"/>
<property name="target" ref="targetChannel"/>
</bean>