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/*
 * Copyright (c) 2014 Spotify AB.
 *
 * Licensed 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.lang.System.getenv;
import static java.util.Arrays.asList;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.hamcrest.Matchers.isEmptyOrNullString;
import static org.junit.Assume.assumeThat;

public class FlappingTest extends SystemTestBase {

  @Test
  public void test() throws Exception {
    // CircleCI boxes are too slow -- the job doesn't stop or restart fast enough to ever flap
    assumeThat(getenv("CIRCLECI"), isEmptyOrNullString());

    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