/*
* 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.agent;
import com.google.common.util.concurrent.SettableFuture;
import com.spotify.docker.client.ImageNotFoundException;
import com.spotify.docker.client.ImagePullFailedException;
import com.spotify.helios.common.descriptors.JobId;
import com.spotify.helios.common.descriptors.ThrottleState;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.runners.MockitoJUnitRunner;
import org.mockito.stubbing.Answer;
import static com.spotify.helios.common.descriptors.TaskStatus.State.CREATING;
import static com.spotify.helios.common.descriptors.TaskStatus.State.EXITED;
import static com.spotify.helios.common.descriptors.TaskStatus.State.FAILED;
import static com.spotify.helios.common.descriptors.TaskStatus.State.PULLING_IMAGE;
import static com.spotify.helios.common.descriptors.TaskStatus.State.RUNNING;
import static com.spotify.helios.common.descriptors.TaskStatus.State.STARTING;
import static com.spotify.helios.common.descriptors.ThrottleState.FLAPPING;
import static com.spotify.helios.common.descriptors.ThrottleState.IMAGE_MISSING;
import static com.spotify.helios.common.descriptors.ThrottleState.IMAGE_PULL_FAILED;
import static com.spotify.helios.common.descriptors.ThrottleState.NO;
import static org.mockito.Matchers.any;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.reset;
import static org.mockito.Mockito.timeout;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
@RunWith(MockitoJUnitRunner.class)
public class TaskMonitorTest {
@Mock FlapController flapController;
@Mock StatusUpdater statusUpdater;
static final JobId JOB_ID = JobId.fromString("foo:bar:deadbeef");
TaskMonitor sut;
@Before
public void setup() {
sut = new TaskMonitor(JOB_ID, flapController, statusUpdater);
}
@After
public void teardown() {
sut.close();
}
@Test
public void verifyMonitorPropagatesState() throws Exception {
sut.pulling();
verify(statusUpdater, never()).setThrottleState(any(ThrottleState.class));
verify(statusUpdater).setState(PULLING_IMAGE);
verify(statusUpdater).update();
reset(statusUpdater);
sut.creating();
verify(statusUpdater).setState(CREATING);
verify(statusUpdater, never()).setThrottleState(any(ThrottleState.class));
verify(statusUpdater).update();
reset(statusUpdater);
sut.starting();
verify(statusUpdater).setState(STARTING);
verify(statusUpdater, never()).setThrottleState(any(ThrottleState.class));
verify(statusUpdater).update();
reset(statusUpdater);
sut.running();
verify(statusUpdater).setState(RUNNING);
verify(statusUpdater, never()).setThrottleState(any(ThrottleState.class));
verify(statusUpdater).update();
reset(statusUpdater);
sut.exited(4711);
verify(statusUpdater).setState(EXITED);
verify(statusUpdater, never()).setThrottleState(any(ThrottleState.class));
verify(statusUpdater).update();
reset(statusUpdater);
sut.failed(new Exception());
verify(statusUpdater).setState(FAILED);
verify(statusUpdater, never()).setThrottleState(any(ThrottleState.class));
verify(statusUpdater).update();
reset(statusUpdater);
}
@Test
public void verifyMonitorPropagatesImagePullFailed() throws Exception {
sut.failed(new ImagePullFailedException("foobar", "failure"));
verify(statusUpdater).setThrottleState(IMAGE_PULL_FAILED);
verify(statusUpdater).setState(FAILED);
verify(statusUpdater).update();
}
@Test
public void verifyMonitorPropagatesImageMissing() throws Exception {
sut.failed(new ImageNotFoundException("foobar", "not found"));
verify(statusUpdater).setThrottleState(IMAGE_MISSING);
verify(statusUpdater).setState(FAILED);
verify(statusUpdater).update();
}
@Test
public void verifyMonitorUsesFlapController() {
sut.running();
verify(statusUpdater, never()).setThrottleState(FLAPPING);
verify(flapController).started();
sut.exited(17);
verify(flapController).exited();
}
@Test
public void verifyImagePullFailureTrumpsFlappingState() throws Exception {
when(flapController.isFlapping()).thenReturn(true);
sut.failed(new ImagePullFailedException("foobar", "failure"));
verify(statusUpdater).setThrottleState(IMAGE_PULL_FAILED);
verify(statusUpdater).setState(FAILED);
verify(statusUpdater).update();
}
@Test
public void verifyImageMissingTrumpsFlappingState() throws Exception {
when(flapController.isFlapping()).thenReturn(true);
sut.failed(new ImageNotFoundException("foobar", "not found"));
verify(statusUpdater).setThrottleState(IMAGE_MISSING);
verify(statusUpdater).setState(FAILED);
verify(statusUpdater).update();
}
@Test
public void verifyMonitorRecoversFromFlappingState() {
final SettableFuture<Boolean> flappingRecoveryFuture = SettableFuture.create();
when(flapController.isFlapping())
.thenReturn(true)
.thenAnswer(futureAnswer(flappingRecoveryFuture));
when(flapController.millisLeftToUnflap()).thenReturn(10L);
sut.exited(17);
verify(flapController).exited();
verify(statusUpdater).setThrottleState(FLAPPING);
verify(flapController, timeout(30000).times(2)).isFlapping();
flappingRecoveryFuture.set(false);
verify(statusUpdater, timeout(30000)).setThrottleState(NO);
}
private Answer<?> futureAnswer(final SettableFuture<?> future) {
return new Answer<Object>() {
@Override
public Object answer(final InvocationOnMock invocation) throws Throwable {
return future.get();
}
};
}
}