com.spotify.helios.system.EnvironmentVariableTest.java Source code

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Here is the source code for com.spotify.helios.system.EnvironmentVariableTest.java

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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.google.common.collect.ImmutableMap;

import com.fasterxml.jackson.core.type.TypeReference;
import com.spotify.docker.client.DockerClient;
import com.spotify.docker.client.LogStream;
import com.spotify.helios.Polling;
import com.spotify.helios.common.Json;
import com.spotify.helios.common.descriptors.HostStatus;
import com.spotify.helios.common.descriptors.JobId;
import com.spotify.helios.common.descriptors.TaskStatus;

import org.junit.Test;

import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;

import static com.spotify.docker.client.DockerClient.LogsParam.stderr;
import static com.spotify.docker.client.DockerClient.LogsParam.stdout;
import static com.spotify.helios.common.descriptors.HostStatus.Status.UP;
import static com.spotify.helios.common.descriptors.TaskStatus.State.EXITED;
import static java.util.Arrays.asList;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.containsString;
import static org.junit.Assert.assertEquals;

public class EnvironmentVariableTest extends SystemTestBase {

    @Test
    public void test() throws Exception {
        startDefaultMaster();
        startDefaultAgent(testHost(), "--env", "SPOTIFY_POD=PODNAME", "SPOTIFY_ROLE=ROLENAME", "BAR=badfood");
        awaitHostStatus(testHost(), UP, LONG_WAIT_SECONDS, SECONDS);

        // Wait for the agent to report environment vars
        Polling.await(LONG_WAIT_SECONDS, SECONDS, new Callable<Object>() {
            @Override
            public Object call() throws Exception {
                final Map<String, HostStatus> status = Json.read(cli("hosts", testHost(), "--json"),
                        new TypeReference<Map<String, HostStatus>>() {
                        });
                return status.get(testHost()).getEnvironment();
            }
        });

        try (final DockerClient dockerClient = getNewDockerClient()) {
            final List<String> command = asList("sh", "-c", "echo pod: $SPOTIFY_POD; "
                    + "echo role: $SPOTIFY_ROLE; " + "echo foo: $FOO; " + "echo bar: $BAR");

            // Create job
            final JobId jobId = createJob(testJobName, testJobVersion, BUSYBOX, command,
                    ImmutableMap.of("FOO", "4711", "BAR", "deadbeef"));

            // deploy
            deployJob(jobId, testHost());

            final TaskStatus taskStatus = awaitTaskState(jobId, testHost(), EXITED);

            final LogStream logs = dockerClient.logs(taskStatus.getContainerId(), stdout(), stderr());
            final String log = logs.readFully();

            assertThat(log, containsString("pod: PODNAME"));
            assertThat(log, containsString("role: ROLENAME"));
            assertThat(log, containsString("foo: 4711"));

            // Verify that the the BAR environment variable in the job overrode the agent config
            assertThat(log, containsString("bar: deadbeef"));

            final Map<String, HostStatus> status = Json.read(cli("hosts", testHost(), "--json"),
                    new TypeReference<Map<String, HostStatus>>() {
                    });

            assertEquals(ImmutableMap.of("SPOTIFY_POD", "PODNAME", "SPOTIFY_ROLE", "ROLENAME", "BAR", "badfood"),
                    status.get(testHost()).getEnvironment());

            assertEquals(ImmutableMap.of("SPOTIFY_POD", "PODNAME", "SPOTIFY_ROLE", "ROLENAME", "BAR", "deadbeef",
                    "FOO", "4711"), status.get(testHost()).getStatuses().get(jobId).getEnv());
        }
    }
}