AuditInterceptorAsyncDelegateIssueTest.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.interceptor;

import org.apache.camel.AsyncCallback;
import org.apache.camel.CamelContext;
import org.apache.camel.ContextTestSupport;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.model.ProcessorDefinition;
import org.apache.camel.processor.DelegateAsyncProcessor;
import org.apache.camel.spi.InterceptStrategy;

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

    private MyIntercepStrategy strategy;

    @Override
    protected void setUp() throws Exception {
        strategy = new MyIntercepStrategy();
        super.setUp();
    }

    public void testOk() throws Exception {
        getMockEndpoint("mock:result").expectedMessageCount(1);
        getMockEndpoint("mock:handled").expectedMessageCount(0);
        getMockEndpoint("mock:error").expectedMessageCount(0);
        getMockEndpoint("mock:dead").expectedMessageCount(0);

        template.sendBody("direct:start", "Hello World");

        assertMockEndpointsSatisfied();

        assertEquals(true, strategy.isInvoked());
    }

    public void testILE() throws Exception {
        getMockEndpoint("mock:result").expectedMessageCount(0);
        getMockEndpoint("mock:handled").expectedMessageCount(1);
        getMockEndpoint("mock:error").expectedMessageCount(0);
        getMockEndpoint("mock:dead").expectedMessageCount(0);

        template.sendBody("direct:iae", "Hello World");

        assertMockEndpointsSatisfied();

        assertEquals(true, strategy.isInvoked());
    }

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                getContext().addInterceptStrategy(strategy);

                onException(IllegalArgumentException.class)
                        .handled(true)
                        .to("mock:handled");

                errorHandler(deadLetterChannel("mock:dead").maximumRedeliveries(1));

                from("direct:start").to("mock:result");

                from("direct:iae").throwException(new IllegalArgumentException("Damn"));
            }
        };
    }

    private static final class MyIntercepStrategy implements InterceptStrategy {
        private volatile boolean invoked;

        public Processor wrapProcessorInInterceptors(CamelContext context, ProcessorDefinition<?> definition, Processor target, Processor nextTarget) throws Exception {
            return new DelegateAsyncProcessor(target) {
                public boolean process(Exchange exchange, AsyncCallback callback) {
                    invoked = true;
                    return processor.process(exchange, callback);
                }
            };
        }

        public boolean isInvoked() {
            return invoked;
        }
    }

}