core/camel-core/src/test/java/org/apache/camel/processor/aggregator/AggregateClosedCorrelationKeyTest.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.processor.aggregator;

import org.apache.camel.CamelExecutionException;
import org.apache.camel.ContextTestSupport;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.processor.BodyInAggregatingStrategy;
import org.apache.camel.processor.aggregate.ClosedCorrelationKeyException;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.*;

public class AggregateClosedCorrelationKeyTest extends ContextTestSupport {

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

    @Test
    public void testAggregateClosedCorrelationKey() throws Exception {
        context.addRoutes(new RouteBuilder() {
            @Override
            public void configure() {
                from("direct:start").aggregate(header("id"), new BodyInAggregatingStrategy()).completionSize(2)
                        .closeCorrelationKeyOnCompletion(1000).to("mock:result");
            }
        });
        context.start();

        getMockEndpoint("mock:result").expectedBodiesReceived("A+B");

        template.sendBodyAndHeader("direct:start", "A", "id", 1);
        template.sendBodyAndHeader("direct:start", "B", "id", 1);

        // should be closed
        try {
            template.sendBodyAndHeader("direct:start", "C", "id", 1);
            fail("Should throw an exception");
        } catch (CamelExecutionException e) {
            ClosedCorrelationKeyException cause = assertIsInstanceOf(ClosedCorrelationKeyException.class, e.getCause());
            assertEquals("1", cause.getCorrelationKey());
            assertTrue(cause.getMessage().startsWith("The correlation key [1] has been closed."));
        }

        assertMockEndpointsSatisfied();
    }

    @Test
    public void testAggregateClosedCorrelationKeyCache() throws Exception {
        context.addRoutes(new RouteBuilder() {
            @Override
            public void configure() {
                from("direct:start").aggregate(header("id"), new BodyInAggregatingStrategy()).completionSize(2)
                        .closeCorrelationKeyOnCompletion(2).to("mock:result");
            }
        });
        context.start();

        getMockEndpoint("mock:result").expectedBodiesReceived("A+B", "C+D", "E+F");

        template.sendBodyAndHeader("direct:start", "A", "id", 1);
        template.sendBodyAndHeader("direct:start", "B", "id", 1);
        template.sendBodyAndHeader("direct:start", "C", "id", 2);
        template.sendBodyAndHeader("direct:start", "D", "id", 2);
        template.sendBodyAndHeader("direct:start", "E", "id", 3);
        template.sendBodyAndHeader("direct:start", "F", "id", 3);
        Thread.sleep(200);
        // 2 of them should now be closed
        int closed = 0;

        // should NOT be closed because only 2 and 3 is remembered as they are
        // the two last used
        try {
            template.sendBodyAndHeader("direct:start", "G", "id", 1);
        } catch (CamelExecutionException e) {
            closed++;
            ClosedCorrelationKeyException cause = assertIsInstanceOf(ClosedCorrelationKeyException.class, e.getCause());
            assertEquals("1", cause.getCorrelationKey());
            assertTrue(cause.getMessage().startsWith("The correlation key [1] has been closed."));
        }

        // should be closed
        try {
            template.sendBodyAndHeader("direct:start", "H", "id", 2);
        } catch (CamelExecutionException e) {
            closed++;
            ClosedCorrelationKeyException cause = assertIsInstanceOf(ClosedCorrelationKeyException.class, e.getCause());
            assertEquals("2", cause.getCorrelationKey());
            assertTrue(cause.getMessage().startsWith("The correlation key [2] has been closed."));
        }

        // should be closed
        try {
            template.sendBodyAndHeader("direct:start", "I", "id", 3);
        } catch (CamelExecutionException e) {
            closed++;
            ClosedCorrelationKeyException cause = assertIsInstanceOf(ClosedCorrelationKeyException.class, e.getCause());
            assertEquals("3", cause.getCorrelationKey());
            assertTrue(cause.getMessage().startsWith("The correlation key [3] has been closed."));
        }

        assertMockEndpointsSatisfied();

        assertEquals(2, closed, "There should be 2 closed");
    }

}