engineapi

package module
Version: v0.4.0 Latest Latest
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Published: Jul 27, 2016 License: Apache-2.0 Imports: 0 Imported by: 0

README

GoDoc

Introduction

Engine-api is a set of Go libraries to implement client and server components compatible with the Docker engine. The code was extracted from the Docker engine and contributed back as an external library.

Components

Client

The client package implements a fully featured http client to interact with the Docker engine. It's modeled after the requirements of the Docker engine CLI, but it can also serve other purposes.

Usage

You can use this client package in your applications by creating a new client object. Then use that object to execute operations against the remote server. Follow the example below to see how to list all the containers running in a Docker engine host:

package main

import (
	"fmt"

	"github.com/docker/engine-api/client"
	"github.com/docker/engine-api/types"
	"golang.org/x/net/context"
)

func main() {
	defaultHeaders := map[string]string{"User-Agent": "engine-api-cli-1.0"}
	cli, err := client.NewClient("unix:///var/run/docker.sock", "v1.22", nil, defaultHeaders)
	if err != nil {
		panic(err)
	}

	options := types.ContainerListOptions{All: true}
	containers, err := cli.ContainerList(context.Background(), options)
	if err != nil {
		panic(err)
	}

	for _, c := range containers {
		fmt.Println(c.ID)
	}
}
Types

The types package includes all typed structures that client and server serialize to execute operations.

Server

The server package includes API endpoints that applications compatible with the Docker engine API can reuse. It also provides useful middlewares and helpers to handle http requests.

This package is still pending to be extracted from the Docker engine.

Developing

engine-api requires some minimal libraries that you can download running make deps.

To run tests, use the command make test. We use build tags to isolate functions and structures that are only available for testing.

To validate the sources, use the command make validate.

License

engine-api is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.

Documentation

Overview

Package engineapi provides libraries to implement client and server components compatible with the Docker engine.

The client package in github.com/docker/engine-api/client implements all necessary requests to implement the official Docker engine cli.

Create a new client, then use it to send and receive messages to the Docker engine API:

defaultHeaders := map[string]string{"User-Agent": "engine-api-cli-1.0"}
cli, err := client.NewClient("unix:///var/run/docker.sock", "v1.22", nil, defaultHeaders)

Other programs, like Docker Machine, can set the default Docker engine environment for you. There is a shortcut to use its variables to configure the client:

cli, err := client.NewEnvClient()

All request arguments are defined as typed structures in the types package. For instance, this is how to get all containers running in the host:

options := types.ContainerListOptions{All: true}
containers, err := cli.ContainerList(context.Background(), options)

Source Files

Directories

Path Synopsis
transport
Package transport provides function to send request to remote endpoints.
Package transport provides function to send request to remote endpoints.
transport/cancellable
Package cancellable provides helper function to cancel http requests.
Package cancellable provides helper function to cancel http requests.
Package types is used for API stability in the types and response to the consumers of the API stats endpoint.
Package types is used for API stability in the types and response to the consumers of the API stats endpoint.
filters
Package filters provides helper function to parse and handle command line filter, used for example in docker ps or docker images commands.
Package filters provides helper function to parse and handle command line filter, used for example in docker ps or docker images commands.
versions/v1p19
Package v1p19 provides specific API types for the API version 1, patch 19.
Package v1p19 provides specific API types for the API version 1, patch 19.
versions/v1p20
Package v1p20 provides specific API types for the API version 1, patch 20.
Package v1p20 provides specific API types for the API version 1, patch 20.

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