Go Warden
Go Shell
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[#136945657]

Signed-off-by: Ed King <eking@pivotal.io>

README.md

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Note: This repository should be imported as code.cloudfoundry.org/garden.

A rich golang client and server for container creation and management with pluggable backends for The Open Container Initiative Spec and windows.

Garden is a platform-agnostic Go API for container creation and management, with pluggable backends for different platforms and runtimes. This package contains the canonical client, as well as a server package containing an interface to be implemented by backends.

If you're just getting started, you probably want to begin by setting up one of the backends listed below. If you want to use the Garden client to manage containers, see the Client API section.

Backends

Backends implement support for various specific platforms. So far, the list of backends is as follows:

Client API

The canonical API for Garden is defined as a collection of Go interfaces. See the godoc documentation for details.

Example use

Install needed packages:

go get code.cloudfoundry.org/garden
go get code.cloudfoundry.org/lager

Import these packages:

"bytes"
"fmt"

"code.cloudfoundry.org/garden"
"code.cloudfoundry.org/garden/client"
"code.cloudfoundry.org/garden/client/connection"

Create a client:

gardenClient := client.New(connection.New("tcp", "127.0.0.1:7777"))

Create a container:

container, err := gdnClient.Create(garden.ContainerSpec{})
if err != nil {
  os.Exit(1)
}

Run a process:

buffer := &bytes.Buffer{}
process, err := container.Run(garden.ProcessSpec{
  Path: "echo",
  Args: []string{"hello from the container"},
}, garden.ProcessIO{
  Stdout: buffer,
  Stderr: buffer,
})
if err != nil {
  os.Exit(1)
}

exitCode, err := process.Wait()
if err != nil {
  os.Exit(1)
}

fmt.Printf("Exit code: %d, Process output %s", exitCode, buffer.String())

Development

Prerequisites

  • go
  • git (for garden and its dependencies)
  • mercurial (for some other dependencies not using git)

Running the tests

Assuming go is installed and $GOPATH is set:

mkdir -p $GOPATH/src/code.cloudfoundry.org
cd $GOPATH/src/code.cloudfoundry.org
git clone git@github.com:cloudfoundry/garden
cd garden
go get -t -u ./...
go install github.com/onsi/ginkgo/ginkgo
ginkgo -r