org.apache.camel.component.directvm.DirectVmProducer Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of camel-core Show documentation
Show all versions of camel-core Show documentation
The Core Camel Java DSL based router
/**
* 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.directvm;
import org.apache.camel.AsyncCallback;
import org.apache.camel.Exchange;
import org.apache.camel.Message;
import org.apache.camel.impl.DefaultAsyncProducer;
import org.apache.camel.spi.HeaderFilterStrategy;
import org.apache.camel.util.ExchangeHelper;
/**
* The Direct-VM producer.
*/
public class DirectVmProducer extends DefaultAsyncProducer {
private DirectVmEndpoint endpoint;
public DirectVmProducer(DirectVmEndpoint endpoint) {
super(endpoint);
this.endpoint = endpoint;
}
@Override
public boolean process(Exchange exchange, AsyncCallback callback) {
// send to consumer
DirectVmConsumer consumer = endpoint.getComponent().getConsumer(endpoint);
if (consumer == null) {
if (endpoint.isFailIfNoConsumers()) {
exchange.setException(new DirectVmConsumerNotAvailableException("No consumers available on endpoint: " + endpoint, exchange));
} else {
log.debug("message ignored, no consumers available on endpoint: " + endpoint);
}
callback.done(true);
return true;
}
final HeaderFilterStrategy headerFilterStrategy = endpoint.getHeaderFilterStrategy();
// Only clone the Exchange if we actually need to filter out properties or headers.
final Exchange submitted = (!endpoint.isPropagateProperties() || headerFilterStrategy != null) ? exchange.copy(true) : exchange;
// Clear properties in the copy if we are not propagating them.
if (!endpoint.isPropagateProperties()) {
submitted.getProperties().clear();
}
// Filter headers by Header Filter Strategy if there is one set.
if (headerFilterStrategy != null) {
submitted.getIn().getHeaders().entrySet().removeIf(e -> headerFilterStrategy.applyFilterToCamelHeaders(e.getKey(), e.getValue(), submitted));
}
return consumer.getAsyncProcessor().process(submitted, done -> {
Message msg = submitted.hasOut() ? submitted.getOut() : submitted.getIn();
if (headerFilterStrategy != null) {
msg.getHeaders().entrySet().removeIf(e -> headerFilterStrategy.applyFilterToExternalHeaders(e.getKey(), e.getValue(), submitted));
}
if (exchange != submitted) {
// only need to copy back if they are different
exchange.setException(submitted.getException());
exchange.getOut().copyFrom(msg);
}
if (endpoint.isPropagateProperties()) {
exchange.getProperties().putAll(submitted.getProperties());
}
callback.done(done);
});
}
}