forked from LaconicNetwork/kompose
111 lines
2.8 KiB
Go
111 lines
2.8 KiB
Go
/*
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Copyright 2016 Skippbox, Ltd All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package kubernetes
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import (
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"bytes"
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"io/ioutil"
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"os"
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"path/filepath"
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"text/template"
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"github.com/Sirupsen/logrus"
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)
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/**
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* Generate Helm Chart configuration
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*/
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func GenerateHelm(filename string, svcnames []string, generateYaml, createD, createDS, createRC bool, outFile string) error {
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type ChartDetails struct {
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Name string
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}
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extension := filepath.Ext(filename)
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dirName := filename[0 : len(filename)-len(extension)]
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details := ChartDetails{dirName}
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manifestDir := dirName + string(os.PathSeparator) + "templates"
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dir, err := os.Open(dirName)
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/* Setup the initial directories/files */
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if err == nil {
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_ = dir.Close()
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}
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if err != nil {
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err = os.Mkdir(dirName, 0755)
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if err != nil {
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return err
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}
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err = os.Mkdir(manifestDir, 0755)
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if err != nil {
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return err
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}
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/* Create the readme file */
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readme := "This chart was created by Kompose\n"
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err = ioutil.WriteFile(dirName+string(os.PathSeparator)+"README.md", []byte(readme), 0644)
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if err != nil {
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return err
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}
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/* Create the Chart.yaml file */
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chart := `name: {{.Name}}
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description: A generated Helm Chart for {{.Name}} from Skippbox Kompose
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version: 0.0.1
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keywords:
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- {{.Name}}
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sources:
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home:
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`
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t, err := template.New("ChartTmpl").Parse(chart)
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if err != nil {
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logrus.Fatalf("Failed to generate Chart.yaml template: %s\n", err)
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}
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var chartData bytes.Buffer
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_ = t.Execute(&chartData, details)
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err = ioutil.WriteFile(dirName+string(os.PathSeparator)+"Chart.yaml", chartData.Bytes(), 0644)
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if err != nil {
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return err
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}
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}
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/* Copy all related json/yaml files into the newly created manifests directory */
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for _, filename := range outFiles {
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if err = cpFileToChart(manifestDir, filename); err != nil {
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logrus.Warningln(err)
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}
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if err = os.Remove(filename); err != nil {
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logrus.Warningln(err)
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}
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}
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logrus.Infof("chart created in %q\n", "."+string(os.PathSeparator)+dirName+string(os.PathSeparator))
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return nil
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}
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func cpFileToChart(manifestDir, filename string) error {
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infile, err := ioutil.ReadFile(filename)
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if err != nil {
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logrus.Warningf("Error reading %s: %s\n", filename, err)
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return err
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}
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return ioutil.WriteFile(manifestDir+string(os.PathSeparator)+filename, infile, 0644)
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}
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