/**
* 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.ignite.events;
import java.util.Arrays;
import org.apache.camel.AsyncCallback;
import org.apache.camel.Exchange;
import org.apache.camel.ExchangePattern;
import org.apache.camel.Message;
import org.apache.camel.Processor;
import org.apache.camel.impl.DefaultConsumer;
import org.apache.ignite.IgniteEvents;
import org.apache.ignite.events.Event;
import org.apache.ignite.lang.IgnitePredicate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Ignite Events consumer.
*/
public class IgniteEventsConsumer extends DefaultConsumer {
private static final Logger LOG = LoggerFactory.getLogger(IgniteEventsConsumer.class);
private IgniteEventsEndpoint endpoint;
private IgniteEvents events;
private int[] eventTypes = new int[0];
private IgnitePredicate<Event> predicate = new IgnitePredicate<Event>() {
private static final long serialVersionUID = 6738594728074592726L;
@Override
public boolean apply(Event event) {
Exchange exchange = endpoint.createExchange(ExchangePattern.InOnly);
Message in = exchange.getIn();
in.setBody(event);
try {
if (LOG.isTraceEnabled()) {
LOG.trace("Processing Ignite Event: {}.", event);
}
getAsyncProcessor().process(exchange, new AsyncCallback() {
@Override
public void done(boolean doneSync) {
// do nothing
}
});
} catch (Exception e) {
LOG.error(String.format("Exception while processing Ignite Event: %s.", event), e);
}
return true;
}
};
public IgniteEventsConsumer(IgniteEventsEndpoint endpoint, Processor processor, IgniteEvents events) {
super(endpoint, processor);
this.endpoint = endpoint;
this.events = events;
}
@Override
protected void doStart() throws Exception {
super.doStart();
if (endpoint.getEvents() != null && endpoint.getEvents().size() > 0) {
eventTypes = new int[endpoint.getEvents().size()];
int counter = 0;
for (Integer i : endpoint.getEvents()) {
eventTypes[counter++] = i;
}
}
events.localListen(predicate, eventTypes);
LOG.info("Started local Ignite Events consumer for events: {}.", Arrays.asList(eventTypes));
}
@Override
protected void doStop() throws Exception {
super.doStop();
events.stopLocalListen(predicate, eventTypes);
LOG.info("Stopped local Ignite Events consumer for events: {}.", Arrays.asList(eventTypes));
}
}