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Initial support for rocket

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justinsb committed Apr 12, 2015
1 parent d31abaa commit aaa5db494c0b6b4354b26e5a04b5592132c49387
@@ -112,6 +112,12 @@
@@ -0,0 +1,163 @@
* Copyright (c) 2015 CoreOS Inc.
* 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
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
package com.coreos.appc.docker;
import static;
import static java.nio.charset.StandardCharsets.UTF_8;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.nio.file.attribute.FileTime;
import java.util.Collections;
import java.util.List;
import com.coreos.appc.ContainerBuilder;
import com.coreos.appc.ContainerFile;
import com.spotify.docker.client.AnsiProgressHandler;
import com.spotify.docker.client.DockerClient;
public class DockerContainerBuilder extends ContainerBuilder {
final DockerClient docker;
final String dockerBuildDir;
final List<String> addFiles = Lists.newArrayList();
* Set to override the auto-generated dockerfile
public Path dockerfile;
public DockerContainerBuilder(DockerClient docker, String dockerBuildDir) {
this.docker = docker;
this.dockerBuildDir = dockerBuildDir;
private void createDockerFile() throws IOException {
final List<String> commands = Lists.newArrayList();
if (baseImage != null) {
commands.add("FROM " + baseImage);
if (maintainer != null) {
commands.add("MAINTAINER " + maintainer);
if (entryPoint != null) {
commands.add("ENTRYPOINT " + entryPoint);
if (cmd != null) {
// TODO(dano): we actually need to check whether the base image has an entrypoint
if (entryPoint != null) {
// CMD needs to be a list of arguments if ENTRYPOINT is set.
if (cmd.startsWith("[") && cmd.endsWith("]")) {
// cmd seems to be an argument list, so we're good
commands.add("CMD " + cmd);
} else {
// cmd does not seem to be an argument list, so try to generate one.
final List<String> args = ImmutableList.copyOf(
final StringBuilder cmdBuilder = new StringBuilder("[");
for (String arg : args) {
final String cmdString = cmdBuilder.toString();
commands.add("CMD " + cmdString);
log.warn("Entrypoint provided but cmd is not an explicit list. Attempting to "
+ "generate CMD string in the form of an argument list.");
log.warn("CMD " + cmdString);
} else {
// no ENTRYPOINT set so use cmd verbatim
commands.add("CMD " + cmd);
} else {
commands.add("CMD []");
for (String file : addFiles) {
commands.add(String.format("ADD %s %s", file, file));
if (env != null) {
final List<String> sortedKeys = Ordering.natural().sortedCopy(env.keySet());
for (String key : sortedKeys) {
final String value = env.get(key);
commands.add(String.format("ENV %s %s", key, value));
if (exposesSet != null && exposesSet.size() > 0) {
// The values will be sorted with no duplicated since exposesSet is a TreeSet
commands.add("EXPOSE " + Joiner.on(" ").join(exposesSet));
// this will overwrite an existing file
Files.write(Paths.get(dockerBuildDir, "Dockerfile"), commands, UTF_8);
public void addFiles(List<ContainerFile> containerFiles) throws IOException {
List<String> copiedPaths = Lists.newArrayList();
for (ContainerFile containerFile : containerFiles) {
final Path sourcePath = containerFile.sourcePath;
final Path destPath = Paths.get(dockerBuildDir, containerFile.imagePath);"Copying %s -> %s", sourcePath, destPath));
// ensure all directories exist because copy operation will fail if they don't
Files.copy(sourcePath, destPath, StandardCopyOption.REPLACE_EXISTING);
Files.setLastModifiedTime(destPath, FileTime.fromMillis(0));
// file location relative to docker directory, used later to generate Dockerfile
final Path relativePath = Paths.get(containerFile.imagePath);
// The list of included files returned from DirectoryScanner can be in a different order
// each time. This causes the ADD statements in the generated Dockerfile to appear in a
// different order. We want to avoid this so each run of the plugin always generates the same
// Dockerfile, which also makes testing easier. Sort the list of paths for each resource
// before adding it to the allCopiedPaths list. This way we follow the ordering of the
// resources in the pom, while making sure all the paths of each resource are always in the
// same order.
public void buildImage(String imageName) throws Exception {
if (dockerfile == null) {
}"Building image " + imageName);, imageName, new AnsiProgressHandler());"Built " + imageName);
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