/**
* 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.zookeeper;
import java.util.concurrent.TimeUnit;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.zookeeper.KeeperException.NodeExistsException;
import org.apache.zookeeper.Watcher.Event.EventType;
import org.junit.Test;
public class ConsumeDataTest extends ZooKeeperTestSupport {
@Override
protected RouteBuilder[] createRouteBuilders() throws Exception {
return new RouteBuilder[] {new RouteBuilder() {
public void configure() throws Exception {
from("zookeeper://localhost:" + getServerPort() + "/camel?repeat=true").to("mock:zookeeper-data");
}
}};
}
@Test
public void shouldAwaitCreationAndGetDataNotification() throws Exception {
EventType[] expectedEventTypes = new EventType[] {
EventType.NodeCreated,
EventType.NodeDataChanged,
EventType.NodeDataChanged,
EventType.NodeDataChanged,
EventType.NodeDataChanged,
EventType.NodeDataChanged,
EventType.NodeDataChanged,
EventType.NodeDataChanged,
EventType.NodeDataChanged,
EventType.NodeDataChanged,
EventType.NodeDeleted
};
MockEndpoint mock = getMockEndpoint("mock:zookeeper-data");
mock.expectedMessageCount(expectedEventTypes.length);
createCamelNode();
updateNode(10);
delay(200);
client.delete("/camel");
mock.await(5, TimeUnit.SECONDS);
mock.assertIsSatisfied();
int lastVersion = -1;
for (int i = 0; i < mock.getExchanges().size(); i++) {
assertEquals(expectedEventTypes[i], mock.getExchanges().get(i).getIn().getHeader(ZooKeeperMessage.ZOOKEEPER_EVENT_TYPE));
if (!EventType.NodeDeleted.equals(expectedEventTypes[i])) {
// As a delete event does not carry statistics, ignore it in the version check.
int version = ZooKeeperMessage.getStatistics(mock.getExchanges().get(i).getIn()).getVersion();
assertTrue("Version did not increase", lastVersion < version);
lastVersion = version;
}
}
}
@Test
public void deletionOfAwaitedNodeCausesNoFailure() throws Exception {
MockEndpoint mock = getMockEndpoint("mock:zookeeper-data");
mock.expectedMessageCount(11);
createCamelNode();
delay(200);
// by now we are back waiting for a change so delete the node
client.delete("/camel");
// recreate and update a number of times.
createCamelNode();
updateNode(10);
mock.await(5, TimeUnit.SECONDS);
mock.assertIsSatisfied();
client.delete("/camel");
}
private void updateNode(int times) throws InterruptedException, Exception {
for (int x = 1; x < times; x++) {
delay(200);
client.setData("/camel", testPayload + "_" + x, -1);
}
}
private void createCamelNode() throws InterruptedException, Exception {
try {
delay(1000);
client.create("/camel", testPayload + "_0");
} catch (NodeExistsException e) {
}
}
}