/*
* Copyright (c) 2014 Spotify AB.
*
* 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 com.spotify.helios.system;
import com.spotify.helios.Polling;
import com.spotify.helios.client.HeliosClient;
import com.spotify.helios.common.descriptors.Job;
import com.spotify.helios.common.descriptors.JobId;
import com.spotify.helios.common.descriptors.JobStatus;
import com.spotify.helios.common.descriptors.PortMapping;
import com.spotify.helios.common.descriptors.TaskStatus;
import org.junit.Test;
import java.io.IOException;
import java.net.Socket;
import java.util.concurrent.Callable;
import static com.spotify.helios.common.descriptors.HostStatus.Status.UP;
import static com.spotify.helios.common.descriptors.TaskStatus.State.RUNNING;
import static com.spotify.helios.common.descriptors.ThrottleState.FLAPPING;
import static com.spotify.helios.common.descriptors.ThrottleState.NO;
import static java.util.Arrays.asList;
import static java.util.concurrent.TimeUnit.SECONDS;
public class FlappingTest extends SystemTestBase {
@Test
public void test() throws Exception {
startDefaultMaster();
final String host = testHost();
startDefaultAgent(host);
final HeliosClient client = defaultClient();
awaitHostStatus(client, host, UP, LONG_WAIT_SECONDS, SECONDS);
final Job flapper = Job.newBuilder()
.setName(testJobName)
.setVersion(testJobVersion)
.setImage(BUSYBOX)
.setCommand(asList("nc", "-p", "4711", "-l"))
.addPort("poke", PortMapping.of(4711))
.build();
final JobId jobId = createJob(flapper);
deployJob(jobId, host);
awaitTaskState(jobId, host, RUNNING);
// Poke the container to make it exit until it's classified as flapping
Polling.await(LONG_WAIT_SECONDS, SECONDS, new Callable<Object>() {
@Override
public Object call() throws Exception {
final JobStatus jobStatus = getOrNull(client.jobStatus(jobId));
final TaskStatus taskStatus = jobStatus.getTaskStatuses().get(host);
if (taskStatus.getThrottled() == FLAPPING) {
return true;
}
final PortMapping port = taskStatus.getPorts().get("poke");
assert port.getExternalPort() != null;
poke(port.getExternalPort());
return null;
}
});
// Verify that the job recovers after we stop poking
awaitJobThrottle(client, host, jobId, NO, LONG_WAIT_SECONDS, SECONDS);
}
private boolean poke(final int port) {
try (Socket ignored = new Socket(DOCKER_HOST.address(), port)) {
return true;
} catch (IOException e) {
return false;
}
}
}