docker-java

Java API client for Docker

Supports Docker Client API v1.3, Server version 0.5.0

Java-7 branch is using new Java 7 API for file manipulations to keep metadata while building Dockerbuild file. With new API, there's NO NEED to explicitly set executable bit, e.g.

run cp /tmp/testrun.sh /usr/local/bin/ && chmod +x /usr/local/bin/testrun.sh

Build with Maven

Prerequisites:

Java 1.7+
Maven 3.0.5
Docker daemon running

By default maven will run tests during build process. Tests are using localhost instance of Docker, make sure that you have Docker running, or the tests.

Run docker:

$ sudo docker -d

Make sure that docker is up:

$ docker version    
Client version: 0.4.8
Server version: 0.4.8
Go version: go1.1

Run build with tests:

$ mvn clean install

If you don't have Docker running localy, you can skip tests with -DskipTests flag set to true:

$ mvn clean install -DskipTests=true

Docker Java Client usage:

To use Java Docker client, include dependency into your pom.xml:

<dependency>
      <groupId>com.kpelykh</groupId>
      <artifactId>docker-java</artifactId>
      <version>1.0-SNAPSHOT</version>
</dependency>

Currently Docker Java client is not available in Maven Central, so you will need to install it to a local repository, before you can use it in your projects.

Example code snippets:

DockerClient dockerClient = new DockerClient("http://localhost:4243");

Get Docker info:

Info info = dockerClient.info();
System.out.print(info);

Search Docker repository:

List<SearchItem> dockerSearch = dockerClient.search("busybox");
System.out.println("Search returned" + dockerSearch.toString());

Create new Docker container, wait for its start and stop it:

ContainerConfig containerConfig = new ContainerConfig();
containerConfig.setImage("busybox");
containerConfig.setCmd(new String[] {"touch", "/test"});
ContainerCreateResponse container = dockerClient.createContainer(containerConfig);

dockerClient.startContainer(container.id);

dockerClient.waitContainer(container.id);

dockerClient.stopContainer(container.id);

Docker Builder:

To use Docker Builder, as described on page http://docs.docker.io/en/latest/use/builder/, user dockerClient.build(baseDir), where baseDir is a path to folder containing Dockerfile.

File baseDir = new File("~/kpelykh/docker/netcat");

ClientResponse response = dockerClient.build(baseDir);

StringWriter logwriter = new StringWriter();

try {
    LineIterator itr = IOUtils.lineIterator(response.getEntityInputStream(), "UTF-8");
    while (itr.hasNext()) {
        String line = itr.next();
        logwriter.write(line);
        LOG.info(line);
    }
} finally {
    IOUtils.closeQuietly(response.getEntityInputStream());
}

For additional examples, please look at DockerClientTest.java

TODO

Currently the following APIs are missing:

export, history, login, push, tag

License

rws-github/docker-java

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