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package org.apache.camel.component.direct; |
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import java.util.concurrent.CopyOnWriteArrayList; |
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import org.apache.camel.Consumer; |
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import org.apache.camel.Exchange; |
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import org.apache.camel.Processor; |
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import org.apache.camel.Producer; |
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import org.apache.camel.impl.DefaultConsumer; |
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import org.apache.camel.impl.DefaultEndpoint; |
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import org.apache.camel.impl.DefaultExchange; |
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import org.apache.camel.impl.DefaultProducer; |
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import org.apache.camel.util.ProducerCache; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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public class DirectEndpoint<E extends Exchange> extends DefaultEndpoint<E> { |
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private static final Log log = LogFactory.getLog(DirectEndpoint.class); |
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private final CopyOnWriteArrayList<DefaultConsumer<E>> consumers = new CopyOnWriteArrayList<DefaultConsumer<E>>(); |
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boolean allowMultipleConsumers=true; |
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public DirectEndpoint(String uri, DirectComponent<E> component) { |
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super(uri, component); |
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} |
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public Producer createProducer() throws Exception { |
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return new DefaultProducer(this) { |
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public void process(Exchange exchange) throws Exception { |
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DirectEndpoint.this.process(exchange); |
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} |
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}; |
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} |
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protected void process(Exchange exchange) throws Exception { |
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if (consumers.isEmpty()) { |
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log.warn("No consumers available on " + this + " for " + exchange); |
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} |
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else { |
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for (DefaultConsumer<E> consumer : consumers) { |
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consumer.getProcessor().process(exchange); |
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} |
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} |
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} |
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public Consumer<E> createConsumer(Processor processor) throws Exception { |
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return new DefaultConsumer<E>(this, processor) { |
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@Override |
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public void start() throws Exception { |
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if( !allowMultipleConsumers && !consumers.isEmpty() ) |
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throw new IllegalStateException("Endpoint "+getEndpointUri()+" only allows 1 active consumer but you attempted to start a 2nd consumer."); |
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consumers.add(this); |
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super.start(); |
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} |
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@Override |
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public void stop() throws Exception { |
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super.stop(); |
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consumers.remove(this); |
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} |
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}; |
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} |
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public E createExchange() { |
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return (E) new DefaultExchange(getContext()); |
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} |
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public boolean isAllowMultipleConsumers() { |
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return allowMultipleConsumers; |
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} |
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public void setAllowMultipleConsumers(boolean allowMutlipleConsumers) { |
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this.allowMultipleConsumers = allowMutlipleConsumers; |
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} |
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public boolean isSingleton() { |
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return true; |
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} |
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} |