com.spotify.helios.testing.TemporaryJobBuilderTest.java Source code

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Here is the source code for com.spotify.helios.testing.TemporaryJobBuilderTest.java

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/*
 * Copyright (c) 2016 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.testing;

import com.spotify.docker.client.shaded.com.fasterxml.jackson.databind.ObjectMapper;
import com.spotify.helios.common.descriptors.Job;
import com.spotify.helios.common.descriptors.PortMapping;

import com.google.common.base.Charsets;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Files;
import com.google.common.io.Resources;

import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Collections;
import java.util.Map;
import java.util.Set;

import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;

public class TemporaryJobBuilderTest {

    private static final Logger log = LoggerFactory.getLogger(TemporaryJobBuilderTest.class);

    @Rule
    public ExpectedException exception = ExpectedException.none();

    private final Deployer deployer = mock(Deployer.class);
    private final Prober prober = mock(Prober.class);
    private final Map<String, String> env = Collections.emptyMap();
    private final TemporaryJobReports.ReportWriter reportWriter = mock(TemporaryJobReports.ReportWriter.class);

    private TemporaryJobBuilder builder;
    private Job.Builder jobBuilder;

    @Before
    public void setUp() throws Exception {
        jobBuilder = Job.newBuilder().setName("foo").addPort("http", PortMapping.of(8080));

        builder = new TemporaryJobBuilder(deployer, "prefix-", prober, env, reportWriter, jobBuilder);

        cleanup();
    }

    /** remove the image_info.json and docker/image-name files to start/end with a clean slate */
    @After
    public void cleanup() throws Exception {
        final Set<String> pathsToDelete = ImmutableSet.of("image_info.json", "target/image_info.json",
                "docker/image-name", "target/docker/image-name");

        for (final String path : pathsToDelete) {
            deleteFromClasspath(path);
            deleteFile(new File(path));
        }
    }

    private void deleteFromClasspath(final String path) throws URISyntaxException {
        final URL url;
        try {
            url = Resources.getResource(path);
        } catch (IllegalArgumentException e) {
            // file not found, cool
            return;
        }
        deleteFile(new File(url.toURI()));
    }

    private void deleteFile(final File f) {
        if (f.exists()) {
            if (f.delete()) {
                log.info("deleted {}", f.getAbsolutePath());
            } else {
                throw new IllegalStateException("Unable to delete file at " + f.getAbsolutePath());
            }
        }
    }

    @Test
    public void testBuildFromJob() {
        final ImmutableList<String> hosts = ImmutableList.of("host1");

        builder.deploy(hosts);

        final ImmutableSet<String> expectedWaitPorts = ImmutableSet.of("http");
        verify(deployer).deploy(any(Job.class), eq(hosts), eq(expectedWaitPorts), eq(prober), eq(reportWriter));
    }

    @Test
    public void testImageFromBuild_NoImageFiles() {
        exception.expect(IllegalArgumentException.class);
        exception.expectMessage("Could not find image_info.json");

        builder.imageFromBuild();
    }

    @Test
    public void testImageFromJson() throws Exception {
        final ObjectMapper objectMapper = new ObjectMapper();
        final String fileContents = objectMapper.createObjectNode().put("image", "foobar:1.2.3").toString();

        writeToFile(fileContents, "target/image_info.json");

        builder.imageFromBuild();

        assertThat(jobBuilder.getImage(), is("foobar:1.2.3"));
    }

    private void writeToFile(final String fileContents, final String relativePath) throws IOException {
        final File f = new File(relativePath);
        Files.createParentDirs(f);
        if (!f.createNewFile()) {
            throw new IllegalStateException("Cannot create file at " + f.getAbsolutePath());
        }
        Files.write(fileContents.getBytes(Charsets.UTF_8), f);
        log.info("Wrote to file at {}", f.getAbsolutePath());
    }

    @Test
    public void testImageFromDockerfileMavenPlugin() throws Exception {
        writeToFile("foobar:from.dockerfile\n", "target/docker/image-name");

        builder.imageFromBuild();

        assertThat(jobBuilder.getImage(), is("foobar:from.dockerfile"));
    }
}