resource/docker/volume/preparer.go
// Copyright © 2016 Asteris, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !solaris
package volume
import (
"github.com/asteris-llc/converge/load/registry"
"github.com/asteris-llc/converge/resource"
"github.com/asteris-llc/converge/resource/docker"
"golang.org/x/net/context"
)
// Preparer for docker volumes
//
// Volume is responsible for managing Docker volumes. It assumes that there is
// already a Docker daemon running on the system.
// *Note: docker resources are not currently supported on Solaris.*
type Preparer struct {
// name of the volume
Name string `hcl:"name" required:"true" nonempty:"true"`
// volume driver. default: local
Driver string `hcl:"driver" default:"local"`
// labels to set on the volume
Labels map[string]string `hcl:"labels"`
// driver specific options
Options map[string]string `hcl:"options"`
// indicates whether the volume should exist.
State State `hcl:"state" valid_values:"present,absent"`
// indicates whether or not the volume will be recreated if the state is not
// what is expected. By default, the module will only check to see if the
// volume exists. Specified as a boolean value
Force bool `hcl:"force"`
}
// Prepare a docker volume
func (p *Preparer) Prepare(ctx context.Context, render resource.Renderer) (resource.Task, error) {
dockerClient, err := docker.NewDockerClient()
if err != nil {
return nil, err
}
state := p.State
if state == "" {
state = StatePresent
}
driver := p.Driver
if driver == "" {
driver = "local"
}
volume := &Volume{
Name: p.Name,
Driver: driver,
Labels: p.Labels,
Options: p.Options,
State: state,
Force: p.Force,
}
volume.SetClient(dockerClient)
return volume, nil
}
func init() {
registry.Register("docker.volume", (*Preparer)(nil), (*Volume)(nil))
}