| /* |
| * 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.servicemix.camel.nmr; |
| |
| import java.util.Map; |
| |
| import org.apache.camel.AsyncCallback; |
| import org.apache.camel.Consumer; |
| import org.apache.camel.Processor; |
| import org.apache.camel.impl.DefaultConsumer; |
| import org.apache.camel.spi.Synchronization; |
| import org.apache.servicemix.nmr.api.Channel; |
| import org.apache.servicemix.nmr.api.Endpoint; |
| import org.apache.servicemix.nmr.api.Exchange; |
| import org.apache.servicemix.nmr.api.Status; |
| import org.apache.servicemix.nmr.api.service.ServiceHelper; |
| |
| /** |
| * A {@link Consumer} that receives NMR {@link org.apache.servicemix.nmr.api.Exchange}s and invokes the Camel route |
| */ |
| public class ServiceMixConsumer extends DefaultConsumer implements org.apache.servicemix.nmr.api.Endpoint, Synchronization { |
| |
| private Channel channel; |
| |
| public ServiceMixConsumer(ServiceMixEndpoint endpoint, Processor processor) { |
| super(endpoint, processor); |
| } |
| |
| public ServiceMixEndpoint getEndpoint() { |
| return (ServiceMixEndpoint) super.getEndpoint(); |
| } |
| |
| protected void doStart() throws Exception { |
| super.doStart(); |
| getEndpoint().getComponent().registerEndpoint(this, createEndpointMap()); |
| } |
| |
| protected void doStop() throws Exception { |
| getEndpoint().getComponent().unregisterEndpoint(this, createEndpointMap()); |
| super.doStop(); |
| } |
| |
| private Map<String,?> createEndpointMap() { |
| Map<String, Object> result = ServiceHelper.createMap(Endpoint.NAME, |
| getEndpoint().getEndpointName()); |
| result.put(Endpoint.CHANNEL_SYNC_DELIVERY, getEndpoint().isSynchronous()); |
| result.put(Endpoint.RUN_AS_SUBJECT, getEndpoint().isRunAsSubject()); |
| return result; |
| } |
| |
| public void setChannel(Channel channel) { |
| this.channel = channel; |
| } |
| |
| /** |
| * Process an NMR {@link org.apache.servicemix.nmr.api.Exchange} by creating and sending a Camel {@link org.apache.servicemix.nmr.api.Exchange} |
| * through the defined route |
| */ |
| public void process(Exchange exchange) { |
| if (exchange.getStatus() == Status.Active) { |
| try { |
| org.apache.camel.Exchange camelExchange = getEndpoint().createExchange(exchange); |
| camelExchange.addOnCompletion(this); |
| if (getEndpoint().isSynchronous()) { |
| getProcessor().process(camelExchange); |
| // need to send the response back here |
| onComplete(camelExchange); |
| } else { |
| getAsyncProcessor().process(camelExchange, new AsyncCallback() { |
| public void done(boolean doneSync) { |
| // this is handled by the onComplete/onFailure method |
| } |
| }); |
| } |
| } catch (Exception e) { |
| exchange.setError(e); |
| exchange.setStatus(Status.Error); |
| channel.send(exchange); |
| } |
| } |
| } |
| |
| /** |
| * Handle the Camel {@link org.apache.camel.Exchange) response by updating the matching NMR {@link org.apache.servicemix.nmr.api.Exchange} |
| * and finishing the NMR MEP |
| */ |
| private void handleCamelResponse(Exchange exchange, org.apache.camel.Exchange camelExchange) { |
| // just copy the camelExchange back to the nmr exchange |
| exchange.getProperties().putAll(camelExchange.getProperties()); |
| if (camelExchange.getException() != null) { |
| exchange.setError(camelExchange.getException()); |
| exchange.setStatus(Status.Error); |
| } else if (camelExchange.hasOut() && !camelExchange.getOut().isFault()) { |
| getEndpoint().getComponent().getBinding(). |
| copyCamelMessageToNmrMessage(exchange.getOut(), camelExchange.getOut()); |
| } else if (camelExchange.hasOut() && camelExchange.getOut().isFault()) { |
| getEndpoint().getComponent().getBinding(). |
| copyCamelMessageToNmrMessage(exchange.getFault(), camelExchange.getOut()); |
| } else { |
| exchange.setStatus(Status.Done); |
| } |
| channel.send(exchange); |
| } |
| |
| /* |
| * Handle a successfully completed Camel Exchange |
| */ |
| public void onComplete(org.apache.camel.Exchange exchange) { |
| Exchange nmr = getEndpoint().getComponent().getBinding().extractNmrExchange(exchange); |
| handleCamelResponse(nmr, exchange); |
| } |
| |
| /* |
| * Handle a Caml exchange failure |
| */ |
| public void onFailure(org.apache.camel.Exchange exchange) { |
| Exchange nmr = getEndpoint().getComponent().getBinding().extractNmrExchange(exchange); |
| handleCamelResponse(nmr, exchange); |
| } |
| } |