mirror of https://github.com/linka-cloud/d2vm.git
114 lines
3.3 KiB
Go
114 lines
3.3 KiB
Go
// Copyright 2022 Linka Cloud All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package d2vm
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import (
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_ "embed"
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"fmt"
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"io"
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"text/template"
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"github.com/sirupsen/logrus"
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)
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//go:embed templates/ubuntu.Dockerfile
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var ubuntuDockerfile string
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//go:embed templates/debian.Dockerfile
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var debianDockerfile string
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//go:embed templates/alpine.Dockerfile
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var alpineDockerfile string
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//go:embed templates/centos.Dockerfile
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var centOSDockerfile string
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var (
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ubuntuDockerfileTemplate = template.Must(template.New("ubuntu.Dockerfile").Parse(ubuntuDockerfile))
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debianDockerfileTemplate = template.Must(template.New("debian.Dockerfile").Parse(debianDockerfile))
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alpineDockerfileTemplate = template.Must(template.New("alpine.Dockerfile").Parse(alpineDockerfile))
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centOSDockerfileTemplate = template.Must(template.New("centos.Dockerfile").Parse(centOSDockerfile))
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)
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type NetworkManager string
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const (
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NetworkManagerNone NetworkManager = "none"
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NetworkManagerIfupdown2 NetworkManager = "ifupdown"
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NetworkManagerNetplan NetworkManager = "netplan"
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)
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func (n NetworkManager) Validate() error {
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switch n {
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case NetworkManagerNone, NetworkManagerIfupdown2, NetworkManagerNetplan:
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return nil
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default:
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return fmt.Errorf("unsupported network manager: %s", n)
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}
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}
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type Dockerfile struct {
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Image string
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Password string
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Release OSRelease
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NetworkManager NetworkManager
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Luks bool
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tmpl *template.Template
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}
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func (d Dockerfile) Render(w io.Writer) error {
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return d.tmpl.Execute(w, d)
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}
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func NewDockerfile(release OSRelease, img, password string, networkManager NetworkManager, luks bool) (Dockerfile, error) {
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d := Dockerfile{Release: release, Image: img, Password: password, NetworkManager: networkManager, Luks: luks}
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var net NetworkManager
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switch release.ID {
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case ReleaseDebian:
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d.tmpl = debianDockerfileTemplate
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net = NetworkManagerIfupdown2
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case ReleaseKali:
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d.tmpl = debianDockerfileTemplate
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net = NetworkManagerIfupdown2
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case ReleaseUbuntu:
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d.tmpl = ubuntuDockerfileTemplate
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net = NetworkManagerNetplan
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case ReleaseAlpine:
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d.tmpl = alpineDockerfileTemplate
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net = NetworkManagerIfupdown2
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if networkManager == NetworkManagerNetplan {
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return d, fmt.Errorf("netplan is not supported on alpine")
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}
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case ReleaseCentOS:
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d.tmpl = centOSDockerfileTemplate
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net = NetworkManagerNone
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if networkManager != "" && networkManager != NetworkManagerNone {
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return Dockerfile{}, fmt.Errorf("network manager is not supported on centos")
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}
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default:
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return Dockerfile{}, fmt.Errorf("unsupported distribution: %s", release.ID)
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}
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if d.NetworkManager == "" {
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if release.ID != ReleaseCentOS {
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logrus.Warnf("no network manager specified, using distribution defaults: %s", net)
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}
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d.NetworkManager = net
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}
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if err := d.NetworkManager.Validate(); err != nil {
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return Dockerfile{}, err
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}
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return d, nil
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}
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