IdempotentConsumerCompletionEagerTest.java

/**
 * 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;

import org.apache.camel.ContextTestSupport;
import org.apache.camel.Endpoint;
import org.apache.camel.Exchange;
import org.apache.camel.Message;
import org.apache.camel.Processor;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.processor.idempotent.MemoryIdempotentRepository;
import org.apache.camel.spi.IdempotentRepository;

/**
 * @version 
 */
public class IdempotentConsumerCompletionEagerTest extends ContextTestSupport {
    protected Endpoint startEndpoint;
    protected MockEndpoint resultEndpoint;
    protected MockEndpoint a;
    protected MockEndpoint b;
    protected MockEndpoint dead;
    protected IdempotentRepository<String> repo;

    @Override
    public boolean isUseRouteBuilder() {
        return false;
    }

    public void testCompletionEager() throws Exception {
        repo = MemoryIdempotentRepository.memoryIdempotentRepository(200);
        context.addRoutes(new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                errorHandler(deadLetterChannel("mock:dead"));

                from("direct:start")
                    .idempotentConsumer(header("messageId"), repo).completionEager(true)
                        .to("log:a", "mock:a")
                        .to("log:b", "mock:b")
                    .end()
                    .filter(simple("${header.messageId} == '2'"))
                        .throwException(new IllegalArgumentException("Forced"))
                    .end()
                    .to("log:result", "mock:result");
            }
        });
        context.start();

        // we are on block only scope as "two" was success in the block, and then "two" failed afterwards does not matter
        // the idempotent consumer will not receive "two" again
        a.expectedBodiesReceived("one", "two", "three");
        b.expectedBodiesReceived("one", "two", "three");
        dead.expectedBodiesReceived("two", "two");
        resultEndpoint.expectedBodiesReceived("one", "one", "one", "three");

        sendMessage("1", "one");
        sendMessage("2", "two");
        sendMessage("1", "one");
        sendMessage("2", "two");
        sendMessage("1", "one");
        sendMessage("3", "three");

        assertMockEndpointsSatisfied();
    }

    public void testNotCompletionEager() throws Exception {
        repo = MemoryIdempotentRepository.memoryIdempotentRepository(200);
        context.addRoutes(new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                errorHandler(deadLetterChannel("mock:dead"));

                from("direct:start")
                    .idempotentConsumer(header("messageId"), repo).completionEager(false)
                        .to("log:a", "mock:a")
                        .to("log:b", "mock:b")
                    .end()
                    .filter(simple("${header.messageId} == '2'"))
                        .throwException(new IllegalArgumentException("Forced"))
                    .end()
                    .to("log:result", "mock:result");
            }
        });
        context.start();

        // we are on completion scope so the "two" will rollback and therefore the idempotent consumer receives those again
        a.expectedBodiesReceived("one", "two", "two", "three");
        b.expectedBodiesReceived("one", "two", "two", "three");
        dead.expectedBodiesReceived("two", "two");
        resultEndpoint.expectedBodiesReceived("one", "one", "one", "three");

        sendMessage("1", "one");
        sendMessage("2", "two");
        sendMessage("1", "one");
        sendMessage("2", "two");
        sendMessage("1", "one");
        sendMessage("3", "three");

        assertMockEndpointsSatisfied();
    }

    protected void sendMessage(final Object messageId, final Object body) {
        template.send(startEndpoint, new Processor() {
            public void process(Exchange exchange) {
                // now lets fire in a message
                Message in = exchange.getIn();
                in.setBody(body);
                in.setHeader("messageId", messageId);
            }
        });
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        startEndpoint = resolveMandatoryEndpoint("direct:start");
        resultEndpoint = getMockEndpoint("mock:result");
        a = getMockEndpoint("mock:a");
        b = getMockEndpoint("mock:b");
        dead = getMockEndpoint("mock:dead");
    }

}