/**
* 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.olingo2;
import java.util.HashMap;
import java.util.Map;
import org.apache.camel.AsyncCallback;
import org.apache.camel.Exchange;
import org.apache.camel.RuntimeCamelException;
import org.apache.camel.component.olingo2.api.Olingo2ResponseHandler;
import org.apache.camel.component.olingo2.internal.Olingo2ApiName;
import org.apache.camel.component.olingo2.internal.Olingo2PropertiesHelper;
import org.apache.camel.util.ObjectHelper;
import org.apache.camel.util.component.AbstractApiProducer;
import org.apache.camel.util.component.ApiMethod;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The Olingo2 producer.
*/
public class Olingo2Producer extends AbstractApiProducer<Olingo2ApiName, Olingo2Configuration> {
private static final Logger LOG = LoggerFactory.getLogger(Olingo2Producer.class);
public Olingo2Producer(Olingo2Endpoint endpoint) {
super(endpoint, Olingo2PropertiesHelper.getHelper());
}
@Override
public boolean process(final Exchange exchange, final AsyncCallback callback) {
// properties for method arguments
final Map<String, Object> properties = new HashMap<String, Object>();
properties.putAll(endpoint.getEndpointProperties());
propertiesHelper.getExchangeProperties(exchange, properties);
// let the endpoint and the Producer intercept properties
endpoint.interceptProperties(properties);
interceptProperties(properties);
// create response handler
properties.put(Olingo2Endpoint.RESPONSE_HANDLER_PROPERTY, new Olingo2ResponseHandler<Object>() {
@Override
public void onResponse(Object response) {
// producer returns a single response, even for methods with List return types
exchange.getOut().setBody(response);
// copy headers
exchange.getOut().setHeaders(exchange.getIn().getHeaders());
interceptResult(response, exchange);
callback.done(false);
}
@Override
public void onException(Exception ex) {
exchange.setException(ex);
callback.done(false);
}
@Override
public void onCanceled() {
exchange.setException(new RuntimeCamelException("OData HTTP Request cancelled!"));
callback.done(false);
}
});
// decide which method to invoke
final ApiMethod method = findMethod(exchange, properties);
if (method == null) {
// synchronous failure
callback.done(true);
return true;
}
if (LOG.isDebugEnabled()) {
LOG.debug("Invoking operation {} with {}", method.getName(), properties.keySet());
}
try {
doInvokeMethod(method, properties);
} catch (Throwable t) {
exchange.setException(ObjectHelper.wrapRuntimeCamelException(t));
callback.done(true);
return true;
}
return false;
}
}