bwu_docker 0.1.0+1

Dart client for the Docker remote API

Dart client for the Docker remote API

See https://docs.docker.com/reference/api/docker_remote_api_v1.18/#image-tarball-format for more details.

This package provides a typed interface to the Docker REST API and deserializes JSON response to Dart classes.

The intention is to make it easy to automate Docker tasks like for example in Grinder tasks.

Usage

See example below or the unit tests.

Ensure you have Docker listening on a TCP port (for more details see Bind Docker to another host/port or a Unix socket) becaues Dart currently can't communicate using Unix sockets (see Dart Issue 21403 - Support Unix Sockets in dart:io.

Supported commands

Containers

• containers (List containers)
• create (Create a container)
• container (Inspect a container)
• top (List processes running inside a container)
• logs (missing test) (Get container logs)
• export (Export a container)
• stats (Get container stats based on resource usage)
• resize (missing test) (Resize a container TTY)
• start (Start a container)
• stop (Stop a container)
• restart (Restart a container)
• kill (Kill a container)
• rename (Rename a container)
• pause (Pause a container)
• unpause (Unpause a container)
• attach (missing test) (Attach to a container)
• wait (Wait a container)
• remove (Remove a container)

Images

• images (List images)
• build (Build image from a Dockerfile)
• create (missing test) (Create an image)
• image (Inspect an image)
• history (Get the history of an image)
• push (missing test) (Push an image into a repository)
• tag (Tag an image into a repository)
• remove (Remove an image)
• search (Search images)

Misc

• auth (Check auth configuration)
• info (Display system-wide information)
• version (Show the Docker version information)
• ping (Ping the docker server)
• commit (Create a new image from a containers changes)
• events (Monitor Dockers events)
• get (Get a tarball containing all images in a repository)
• get all (missing test) (Get a tarball containing all images)
• load (missing test) (Load a tarball with a set of images and tags into Docker)
• exec create (Set up an exec instance)
• exec start (missing test) (Start an exec instance)
• exec resize (missing test) (Resize the tty session)
• exec inspect (Inspect an exec command)

Feedback

I'm not a Docker specialist. If something isn't working as expected or you are missing a feature just create a bug report in the GitHub repo.

TODO

• container attach (missing test)
• container attachWs (Attach to a container using websocket)
• container logs (missing test)
• container changes (Inspect changes on a containers filesystem)
• container resize (missing test)
• container copy (missing test)
• image build (missing test)
• misc load (missing test)
• image push (missing test)
• exec start (missing test)
• exec resize (missing test)

Example

library bwu_docker.example.images;

import 'package:bwu_docker/src/remote_api.dart';
import 'package:bwu_docker/src/data_structures.dart';

const dockerPort = 2375;

main() async {
  // initialize the connection to the Docker service
  final conn = new DockerConnection('localhost', dockerPort);
  await conn.init();

  // create a container from an image
  CreateResponse created = await conn.createContainer(
      new CreateContainerRequest()
    ..image = 'busybox'
    ..hostConfig.logConfig = {'Type': 'json-file'});

  // start the container
  await conn.start(created.container);

  // load the list of containers
  Iterable<Container> containers = await conn.containers();

  // investigate response
  var found = containers.firstWhere((c) => c.id == created.container.id);
  print('found: ${found.id}, name: ${found.names.join(', ')}\n');

  print('all:');
  containers.forEach((Container c) {
    print(
        'Container ID: ${c.id}, names: ${c.names.join(', ')}, status: ${c.status}');
  });

  // clean up
  await conn.stop(created.container);
  await conn.removeContainer(created.container);
}

for more examples check out the unit tests.