/**
* 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.component.disruptor;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.test.junit4.CamelTestSupport;
import org.junit.Test;
/**
* This test suite is testing different scenarios where a disruptor is forced to
* buffer exchanges locally until a consumer is registered.
*/
public class DisruptorBufferingTest extends CamelTestSupport {
@Test
public void testDisruptorBufferingWhileWaitingOnFirstConsumer() throws Exception {
template.sendBody("disruptor:foo", "A");
template.sendBody("disruptor:foo", "B");
template.sendBody("disruptor:foo", "C");
final DisruptorEndpoint disruptorEndpoint = getMandatoryEndpoint("disruptor:foo",
DisruptorEndpoint.class);
assertEquals(5, disruptorEndpoint.getDisruptor().getRemainingCapacity());
// Add a first consumer on the endpoint
context.addRoutes(new RouteBuilder() {
@Override
public void configure() throws Exception {
from("disruptor:foo").routeId("bar").to("mock:bar");
}
});
// Now that we have a consumer, the disruptor should send the buffered
// events downstream. Expect to receive the 3 original exchanges.
final MockEndpoint mockEndpoint = getMockEndpoint("mock:bar");
mockEndpoint.expectedMessageCount(3);
mockEndpoint.assertIsSatisfied(200);
}
@Test
public void testDisruptorBufferingWhileWaitingOnNextConsumer() throws Exception {
template.sendBody("disruptor:foo", "A");
template.sendBody("disruptor:foo", "B");
template.sendBody("disruptor:foo", "C");
final DisruptorEndpoint disruptorEndpoint = getMandatoryEndpoint("disruptor:foo",
DisruptorEndpoint.class);
assertEquals(5, disruptorEndpoint.getDisruptor().getRemainingCapacity());
// Add a first consumer on the endpoint
context.addRoutes(new RouteBuilder() {
@Override
public void configure() throws Exception {
from("disruptor:foo").routeId("bar1").delay(200).to("mock:bar");
}
});
// Now that we have a consumer, the disruptor should send the buffered
// events downstream. Wait until we have processed at least one
// exchange.
MockEndpoint mockEndpoint = getMockEndpoint("mock:bar");
mockEndpoint.expectedMinimumMessageCount(1);
mockEndpoint.assertIsSatisfied(200);
// Stop route and make sure all exchanges have been flushed.
context.stopRoute("bar1");
mockEndpoint.expectedMessageCount(3);
mockEndpoint.assertIsSatisfied();
resetMocks();
template.sendBody("disruptor:foo", "D");
template.sendBody("disruptor:foo", "E");
template.sendBody("disruptor:foo", "F");
// Add a new consumer on the endpoint
context.addRoutes(new RouteBuilder() {
@Override
public void configure() throws Exception {
from("disruptor:foo").routeId("bar2").to("mock:bar");
}
});
template.sendBody("disruptor:foo", "G");
// Make sure we have received the 3 buffered exchanges plus the one
// added late.
mockEndpoint = getMockEndpoint("mock:bar");
mockEndpoint.expectedMessageCount(4);
mockEndpoint.assertIsSatisfied(100);
}
@Override
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
@Override
public void configure() throws Exception {
from("direct:start").routeId("foo").to("disruptor:foo?size=8");
}
};
}
}