/**
* 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.processor.aggregator;
import org.apache.camel.ContextTestSupport;
import org.apache.camel.Exchange;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.processor.aggregate.AggregationCollection;
import org.apache.camel.processor.aggregate.PredicateAggregationCollection;
import org.apache.camel.processor.aggregate.UseLatestAggregationStrategy;
/**
* Unit test for PredicateAggregatorCollection.
*/
public class PredicateAggregatorCollectionTest extends ContextTestSupport {
public void testPredicateAggregateCollection() throws Exception {
// START SNIPPET: e2
MockEndpoint result = getMockEndpoint("mock:result");
// we only expect two messages as they have reached the completed predicate
// that we want 3 messages that has the same header id
result.expectedMessageCount(2);
result.expectedBodiesReceived("Message 1c", "Message 3c");
// then we sent all the message at once
template.sendBodyAndHeader("direct:start", "Message 1a", "id", "1");
template.sendBodyAndHeader("direct:start", "Message 2a", "id", "2");
template.sendBodyAndHeader("direct:start", "Message 3a", "id", "3");
template.sendBodyAndHeader("direct:start", "Message 1b", "id", "1");
template.sendBodyAndHeader("direct:start", "Message 3b", "id", "3");
template.sendBodyAndHeader("direct:start", "Message 1c", "id", "1");
template.sendBodyAndHeader("direct:start", "Message 3c", "id", "3");
template.sendBodyAndHeader("direct:start", "Message 2b", "id", "2");
template.sendBodyAndHeader("direct:start", "Message 1d", "id", "1");
template.sendBodyAndHeader("direct:start", "Message 4", "id", "4");
assertMockEndpointsSatisfied();
// END SNIPPET: e2
}
@Override
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
public void configure() throws Exception {
// START SNIPPET: e1
// create the aggregation collection we will use.
// - we will correlate the received message based on the id header
// - as we will just keep the latest message we use the latest strategy
// - and finally we stop aggregate if we receive 2 or more messages
AggregationCollection ag = new PredicateAggregationCollection(header("id"),
new UseLatestAggregationStrategy(),
header(Exchange.AGGREGATED_COUNT).isEqualTo(3));
// our route is aggregating from the direct queue and sending the response to the mock
from("direct:start")
// we use the collection based aggregator we already have configued
.aggregator(ag)
// wait for 0.5 seconds to aggregate
.batchTimeout(500L)
.to("mock:result");
// END SNIPPET: e1
}
};
}
}