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libcompose

GoDoc Jenkins Build Status

A Go library for Docker Compose. It does everything the command-line tool does, but from within Go -- read Compose files, start them, scale them, etc.

Note: This is experimental and not intended to replace the Docker Compose command-line tool. If you're looking to use Compose, head over to the Compose installation instructions to get started with it.

package main

import (
	"log"

	"github.com/docker/libcompose/docker"
	"github.com/docker/libcompose/project"
)

func main() {
	project, err := docker.NewProject(&docker.Context{
		Context: project.Context{
			ComposeFile: "docker-compose.yml",
			ProjectName: "my-compose",
		},
	})

	if err != nil {
		log.Fatal(err)
	}

	project.Up()
}

Building

You need Docker and make and then run the binary target. This will create binary for all platform in the bundles folder.

$ make binary
docker build -t "libcompose-dev:refactor-makefile" .
# […]
---> Making bundle: binary (in .)
Number of parallel builds: 4

-->      darwin/386: github.com/docker/libcompose/cli/main
-->    darwin/amd64: github.com/docker/libcompose/cli/main
-->       linux/386: github.com/docker/libcompose/cli/main
-->     linux/amd64: github.com/docker/libcompose/cli/main
-->       linux/arm: github.com/docker/libcompose/cli/main
-->     windows/386: github.com/docker/libcompose/cli/main
-->   windows/amd64: github.com/docker/libcompose/cli/main

$ ls bundles
libcompose-cli_darwin-386*    libcompose-cli_linux-amd64*      libcompose-cli_windows-amd64.exe*
libcompose-cli_darwin-amd64*  libcompose-cli_linux-arm*
libcompose-cli_linux-386*     libcompose-cli_windows-386.exe*

Running

A partial implementation of the libcompose-cli CLI is also implemented in Go. The primary purpose of this code is so one can easily test the behavior of libcompose.

Run one of these:

libcompose-cli_darwin-386
libcompose-cli_linux-amd64
libcompose-cli_windows-amd64.exe
libcompose-cli_darwin-amd64
libcompose-cli_linux-arm
libcompose-cli_linux-386
libcompose-cli_windows-386.exe

Tests

You can run unit tests using the test-unit target and the integration test using the test-integration target.

$ make test-unit
docker build -t "libcompose-dev:refactor-makefile" .
#[…]
---> Making bundle: test-unit (in .)
+ go test -cover -coverprofile=cover.out ./docker
ok      github.com/docker/libcompose/docker     0.019s  coverage: 4.6% of statements
+ go test -cover -coverprofile=cover.out ./project
ok      github.com/docker/libcompose/project    0.010s  coverage: 8.4% of statements
+ go test -cover -coverprofile=cover.out ./version
ok      github.com/docker/libcompose/version    0.002s  coverage: 0.0% of statements

Test success

Current status

The project is still being kickstarted... But it does a lot. Please try it out and help us find bugs.

Contributing

Want to hack on libcompose? Docker's contributions guidelines apply.

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  • Go 89.6%
  • Shell 9.3%
  • Makefile 1.1%