Package org.apache.camel.processor.aggregator

Source Code of org.apache.camel.processor.aggregator.AggregateTimeoutTest$MyAggregationStrategy

/**
* 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 java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

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.TimeoutAwareAggregationStrategy;

/**
* @version
*/
public class AggregateTimeoutTest extends ContextTestSupport {

    private static final AtomicInteger INVOKED = new AtomicInteger();

    public void testAggregateTimeout() throws Exception {
        MockEndpoint mock = getMockEndpoint("mock:aggregated");
        mock.expectedMessageCount(0);

        template.sendBodyAndHeader("direct:start", "A", "id", 123);
        template.sendBodyAndHeader("direct:start", "B", "id", 123);

        // wait 3 seconds
        Thread.sleep(3000);

        mock.assertIsSatisfied();

        // should invoke the timeout method
        assertEquals(1, INVOKED.get());

        // now send 3 which does not timeout
        mock.reset();
        mock.expectedBodiesReceived("C+D+E");

        template.sendBodyAndHeader("direct:start", "A", "id", 123);
        template.sendBodyAndHeader("direct:start", "B", "id", 123);
        template.sendBodyAndHeader("direct:start", "C", "id", 123);

        // should complete before timeout
        mock.await(1500, TimeUnit.MILLISECONDS);

        // should not invoke the timeout method
        assertEquals(1, INVOKED.get());
    }

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                from("direct:start")
                    .aggregate(header("id"), new MyAggregationStrategy())
                        .discardOnCompletionTimeout()
                        .completionSize(3)
                        // use a 2 second timeout
                        .completionTimeout(2000)
                        .to("mock:aggregated");
            }
        };
    }

    private static class MyAggregationStrategy implements TimeoutAwareAggregationStrategy {

        public void timeout(Exchange oldExchange, int index, int total, long timeout) {
            INVOKED.incrementAndGet();

            assertEquals(2000, timeout);
            assertEquals(-1, total);
            assertEquals(-1, index);
            assertNotNull(oldExchange);
            assertEquals("AB", oldExchange.getIn().getBody());
        }

        public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
            if (oldExchange == null) {
                return newExchange;
            }

            String body = oldExchange.getIn().getBody(String.class);
            oldExchange.getIn().setBody(body + newExchange.getIn().getBody(String.class));
            return oldExchange;
        }
    }

}
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