resource/package/apt/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.
package apt
import (
"errors"
"strings"
"github.com/asteris-llc/converge/load/registry"
"github.com/asteris-llc/converge/resource"
"github.com/asteris-llc/converge/resource/package"
"golang.org/x/net/context"
)
// Preparer for Debian Package
//
// Apt Package manages system packages with `apt` and `dpkg`. It assumes that
// both `apt` and `dpkg` are installed on the system, and that the user has
// permissions to install, remove, and query packages.
type Preparer struct {
// Name of the package or package group.
Name string `hcl:"name" required:"true" nonempty:"true"`
// State of the package. Present means the package will be installed if
// missing; Absent means the package will be uninstalled if present.
State pkg.State `hcl:"state" valid_values:"present,absent"`
}
// Prepare a new package
func (p *Preparer) Prepare(ctx context.Context, render resource.Renderer) (resource.Task, error) {
if strings.TrimSpace(p.Name) == "" {
return &pkg.Package{}, errors.New("package name cannot be empty")
}
if p.State == "" {
p.State = "present"
}
return &pkg.Package{
Name: p.Name,
State: p.State,
PkgMgr: &Manager{Sys: pkg.ExecCaller{}},
}, nil
}
func init() {
registry.Register("package.apt", (*Preparer)(nil), (*pkg.Package)(nil))
}