core/camel-core/src/test/java/org/apache/camel/issues/RetryRouteScopedUntilRecipientListIssueTest.java

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 * 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,
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 * See the License for the specific language governing permissions and
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package org.apache.camel.issues;

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

import org.apache.camel.Body;
import org.apache.camel.CamelContext;
import org.apache.camel.Consumer;
import org.apache.camel.ContextTestSupport;
import org.apache.camel.Exchange;
import org.apache.camel.ExchangeException;
import org.apache.camel.Header;
import org.apache.camel.Processor;
import org.apache.camel.Producer;
import org.apache.camel.builder.NotifyBuilder;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.spi.Registry;
import org.apache.camel.support.DefaultEndpoint;
import org.apache.camel.support.DefaultProducer;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;

public class RetryRouteScopedUntilRecipientListIssueTest extends ContextTestSupport {

    private final AtomicInteger invoked = new AtomicInteger();

    @BeforeEach
    public void resetInvoked() {
        invoked.set(0);
    }

    @Override
    protected Registry createCamelRegistry() throws Exception {
        Registry jndi = super.createCamelRegistry();
        jndi.bind("myRetryBean", new MyRetryBean());
        return jndi;
    }

    @Override
    protected CamelContext createCamelContext() throws Exception {
        CamelContext context = super.createCamelContext();

        context.addEndpoint("fail", new DefaultEndpoint() {
            public Producer createProducer() {
                return new DefaultProducer(this) {
                    public void process(Exchange exchange) {
                        exchange.setException(new IllegalArgumentException("Damn"));
                    }
                };
            }

            public Consumer createConsumer(Processor processor) {
                return null;
            }

            @Override
            protected String createEndpointUri() {
                return "fail";
            }

            public boolean isSingleton() {
                return true;
            }
        });

        context.addEndpoint("not-fail", new DefaultEndpoint() {
            public Producer createProducer() {
                return new DefaultProducer(this) {
                    public void process(Exchange exchange) {
                        // noop
                    }
                };
            }

            public Consumer createConsumer(Processor processor) {
                return null;
            }

            @Override
            protected String createEndpointUri() {
                return "not-fail";
            }

            public boolean isSingleton() {
                return true;
            }
        });

        return context;
    }

    @Test
    public void testRetryUntilRecipientListOkOnly() throws Exception {
        getMockEndpoint("mock:result").expectedMessageCount(1);
        getMockEndpoint("mock:foo").expectedMessageCount(1);

        template.sendBodyAndHeader("seda:start", "Hello World", "recipientListHeader", "direct:foo");

        assertMockEndpointsSatisfied();

        context.stop();

        assertEquals(0, invoked.get());
    }

    @Test
    public void testRetryUntilRecipientListOkNotFail() throws Exception {
        getMockEndpoint("mock:result").expectedMessageCount(1);
        getMockEndpoint("mock:foo").expectedMessageCount(1);

        template.sendBodyAndHeader("seda:start", "Hello World", "recipientListHeader", "direct:foo,not-fail");

        assertMockEndpointsSatisfied();

        context.stop();

        assertEquals(0, invoked.get());
    }

    @Test
    public void testRetryUntilRecipientListFailOnly() throws Exception {
        NotifyBuilder event = event().whenDone(2).create();

        getMockEndpoint("mock:result").expectedMessageCount(0);
        getMockEndpoint("mock:foo").expectedMessageCount(0);

        template.sendBodyAndHeader("seda:start", "Hello World", "recipientListHeader", "fail");

        assertMockEndpointsSatisfied();

        // wait until its done before we stop and check that retry was invoked
        boolean matches = event.matches(10, TimeUnit.SECONDS);
        assertTrue(matches);

        context.stop();

        assertEquals(3, invoked.get());
    }

    @Test
    public void testRetryUntilRecipientListFailAndOk() throws Exception {
        NotifyBuilder event = event().whenDone(3).create();

        getMockEndpoint("mock:result").expectedMessageCount(0);
        getMockEndpoint("mock:foo").expectedMinimumMessageCount(0);

        template.sendBodyAndHeader("seda:start", "Hello World", "recipientListHeader", "fail,direct:foo");

        assertMockEndpointsSatisfied();

        // wait until its done before we stop and check that retry was invoked
        boolean matches = event.matches(10, TimeUnit.SECONDS);
        assertTrue(matches);

        context.stop();

        assertEquals(3, invoked.get());
    }

    @Test
    public void testRetryUntilRecipientListOkAndFail() throws Exception {
        NotifyBuilder event = event().whenDone(3).create();

        getMockEndpoint("mock:result").expectedMessageCount(0);
        getMockEndpoint("mock:foo").expectedMessageCount(1);

        template.sendBodyAndHeader("seda:start", "Hello World", "recipientListHeader", "direct:foo,fail");

        assertMockEndpointsSatisfied();

        // wait until its done before we stop and check that retry was invoked
        boolean matches = event.matches(10, TimeUnit.SECONDS);
        assertTrue(matches);

        context.stop();

        assertEquals(3, invoked.get());
    }

    @Test
    public void testRetryUntilRecipientNotFail() throws Exception {
        getMockEndpoint("mock:result").expectedMessageCount(1);
        getMockEndpoint("mock:foo").expectedMessageCount(0);

        template.sendBodyAndHeader("seda:start", "Hello World", "recipientListHeader", "not-fail");

        assertMockEndpointsSatisfied();

        context.stop();

        assertEquals(0, invoked.get());
    }

    @Test
    public void testRetryUntilRecipientFailAndNotFail() throws Exception {
        NotifyBuilder event = event().whenDone(3).create();

        getMockEndpoint("mock:result").expectedMessageCount(0);
        getMockEndpoint("mock:foo").expectedMinimumMessageCount(0);

        template.sendBodyAndHeader("seda:start", "Hello World", "recipientListHeader", "fail,not-fail");

        assertMockEndpointsSatisfied();

        // wait until its done before we stop and check that retry was invoked
        boolean matches = event.matches(10, TimeUnit.SECONDS);
        assertTrue(matches);

        context.stop();

        assertEquals(3, invoked.get());
    }

    @Test
    public void testRetryUntilRecipientNotFailAndFail() throws Exception {
        NotifyBuilder event = event().whenDone(3).create();

        getMockEndpoint("mock:result").expectedMessageCount(0);
        getMockEndpoint("mock:foo").expectedMinimumMessageCount(0);

        template.sendBodyAndHeader("seda:start", "Hello World", "recipientListHeader", "not-fail,fail");
        assertMockEndpointsSatisfied();

        // wait until its done before we stop and check that retry was invoked
        boolean matches = event.matches(10, TimeUnit.SECONDS);
        assertTrue(matches);

        context.stop();

        assertEquals(3, invoked.get());
    }

    @Override
    protected RouteBuilder createRouteBuilder() {
        return new RouteBuilder() {
            @Override
            public void configure() {
                from("seda:start").onException(Exception.class).redeliveryDelay(0).retryWhile(method("myRetryBean")).end()
                        .recipientList(header("recipientListHeader"))
                        .to("mock:result");

                from("direct:foo").to("log:foo").to("mock:foo");
            }
        };
    }

    public class MyRetryBean {

        // using bean binding we can bind the information from the exchange to
        // the types we have in our method signature
        public boolean retry(
                @Header(Exchange.REDELIVERY_COUNTER) Integer counter, @Body String body,
                @ExchangeException Exception causedBy) {
            // NOTE: counter is the redelivery attempt, will start from 1
            invoked.incrementAndGet();

            // we can of course do what ever we want to determine the result but
            // this is a unit test so we end after 3 attempts
            return counter < 3;
        }
    }

}