forked from rook/rook
102 lines
2.7 KiB
Go
102 lines
2.7 KiB
Go
/*
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Copyright 2019 The Rook Authors. 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 csi
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"text/template"
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"github.com/ghodss/yaml"
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apps "k8s.io/api/apps/v1"
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corev1 "k8s.io/api/core/v1"
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)
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func loadTemplate(name, templatePath string, p templateParam) (string, error) {
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b, err := ioutil.ReadFile(templatePath)
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if err != nil {
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return "", err
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}
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data := string(b)
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var writer bytes.Buffer
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t := template.New(name)
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t, err = t.Parse(data)
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if err != nil {
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return "", fmt.Errorf("failed to parse template %v. %+v", name, err)
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}
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err = t.Execute(&writer, p)
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return writer.String(), err
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}
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func templateToService(name, templatePath string, p templateParam) (*corev1.Service, error) {
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var svc corev1.Service
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t, err := loadTemplate(name, templatePath, p)
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if err != nil {
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return nil, fmt.Errorf("failed to load service template. %+v", err)
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}
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err = yaml.Unmarshal([]byte(t), &svc)
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if err != nil {
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return nil, fmt.Errorf("failed to unmarshal service template %+v", err)
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}
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return &svc, nil
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}
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func templateToStatefulSet(name, templatePath string, p templateParam) (*apps.StatefulSet, error) {
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var ss apps.StatefulSet
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t, err := loadTemplate(name, templatePath, p)
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if err != nil {
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return nil, fmt.Errorf("failed to load statefulset template. %+v", err)
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}
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err = yaml.Unmarshal([]byte(t), &ss)
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if err != nil {
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return nil, fmt.Errorf("failed to unmarshal statefulset template %+v", err)
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}
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return &ss, nil
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}
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func templateToDaemonSet(name, templatePath string, p templateParam) (*apps.DaemonSet, error) {
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var ds apps.DaemonSet
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t, err := loadTemplate(name, templatePath, p)
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if err != nil {
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return nil, fmt.Errorf("failed to load daemonset template. %+v", err)
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}
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err = yaml.Unmarshal([]byte(t), &ds)
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if err != nil {
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return nil, fmt.Errorf("failed to unmarshal daemonset template %+v", err)
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}
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return &ds, nil
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}
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func templateToDeployment(name, templatePath string, p templateParam) (*apps.Deployment, error) {
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var ds apps.Deployment
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t, err := loadTemplate(name, templatePath, p)
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if err != nil {
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return nil, fmt.Errorf("failed to load deployment template. %+v", err)
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}
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err = yaml.Unmarshal([]byte(t), &ds)
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if err != nil {
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return nil, fmt.Errorf("failed to unmarshal deployment template %+v", err)
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}
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return &ds, nil
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}
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