/**
* 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.box;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import com.box.boxjavalibv2.dao.BoxEventCollection;
import com.box.boxjavalibv2.dao.BoxTypedObject;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.component.box.internal.BoxConstants;
import org.apache.camel.component.box.internal.CachedBoxClient;
import org.apache.camel.component.box.internal.EventCallback;
import org.apache.camel.component.box.internal.LongPollingEventsManager;
import org.apache.camel.impl.DefaultConsumer;
import org.apache.camel.util.ObjectHelper;
import org.apache.camel.util.component.ApiConsumerHelper;
import org.apache.camel.util.component.ApiMethod;
import org.apache.camel.util.component.ApiMethodHelper;
import org.apache.camel.util.component.PropertyNamesInterceptor;
import org.apache.camel.util.component.ResultInterceptor;
/**
* The Box consumer.
*/
//public class BoxConsumer extends AbstractApiConsumer<BoxApiName, BoxConfiguration> {
public class BoxConsumer extends DefaultConsumer
implements PropertyNamesInterceptor, ResultInterceptor, EventCallback {
private static final String CALLBACK_PROPERTY = "callback";
private final LongPollingEventsManager apiProxy;
private final Map<String, Object> properties;
private final ApiMethod apiMethod;
private boolean splitResult = true;
private CachedBoxClient cachedBoxClient;
public BoxConsumer(BoxEndpoint endpoint, Processor processor) {
super(endpoint, processor);
apiMethod = ApiConsumerHelper.findMethod(endpoint, this);
properties = new HashMap<String, Object>();
properties.putAll(endpoint.getEndpointProperties());
properties.put(CALLBACK_PROPERTY, this);
// invoke LongPollingEventsManager.poll to start event polling
cachedBoxClient = endpoint.getBoxClient();
apiProxy = new LongPollingEventsManager(cachedBoxClient,
endpoint.getConfiguration().getHttpParams(), endpoint.getExecutorService());
}
@Override
public void interceptPropertyNames(Set<String> propertyNames) {
propertyNames.add(CALLBACK_PROPERTY);
}
@Override
public void onEvent(BoxEventCollection events) throws Exception {
// convert Events to exchange and process
log.debug("Processed {} events for {}",
ApiConsumerHelper.getResultsProcessed(this, events, splitResult), cachedBoxClient);
}
@Override
public void onException(Exception e) {
getExceptionHandler().handleException(ObjectHelper.wrapRuntimeCamelException(e));
}
@Override
protected void doStart() throws Exception {
super.doStart();
// invoke the API method to start polling
ApiMethodHelper.invokeMethod(apiProxy, apiMethod, properties);
}
@Override
protected void doStop() throws Exception {
super.doStop();
apiProxy.stopPolling();
}
public boolean isSplitResult() {
return splitResult;
}
public void setSplitResult(boolean splitResult) {
this.splitResult = splitResult;
}
@Override
public Object splitResult(Object result) {
if (result instanceof BoxEventCollection && splitResult) {
BoxEventCollection eventCollection = (BoxEventCollection) result;
final ArrayList<BoxTypedObject> entries = eventCollection.getEntries();
return entries.toArray(new BoxTypedObject[entries.size()]);
}
return result;
}
@Override
public void interceptResult(Object result, Exchange resultExchange) {
if (result instanceof BoxEventCollection) {
BoxEventCollection boxEventCollection = (BoxEventCollection) result;
resultExchange.getIn().setHeader(BoxConstants.CHUNK_SIZE_PROPERTY,
boxEventCollection.getChunkSize());
resultExchange.getIn().setHeader(BoxConstants.NEXT_STREAM_POSITION_PROPERTY,
boxEventCollection.getNextStreamPosition());
}
}
}