mirror of
https://github.com/rancher/rke.git
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55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
package templates
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"github.com/blang/semver"
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"github.com/rancher/kontainer-driver-metadata/rke/templates"
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"github.com/sirupsen/logrus"
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"text/template"
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"github.com/rancher/norman/types/convert"
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"github.com/rancher/rke/metadata"
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)
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func CompileTemplateFromMap(tmplt string, configMap interface{}) (string, error) {
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out := new(bytes.Buffer)
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t := template.Must(template.New("compiled_template").Funcs(template.FuncMap{"GetKubednsStubDomains": GetKubednsStubDomains}).Parse(tmplt))
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if err := t.Execute(out, configMap); err != nil {
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return "", err
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}
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return out.String(), nil
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}
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func GetVersionedTemplates(templateName string, data map[string]interface{}, k8sVersion string) (string, error) {
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if template, ok := data[templateName]; ok {
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return convert.ToString(template), nil
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}
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return getTemplate(templateName, k8sVersion)
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}
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func GetKubednsStubDomains(stubDomains map[string][]string) string {
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json, _ := json.Marshal(stubDomains)
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return string(json)
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}
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func getTemplate(templateName, k8sVersion string) (string, error) {
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versionData := metadata.K8sVersionToTemplates[templateName]
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toMatch, err := semver.Make(k8sVersion[1:])
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if err != nil {
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return "", fmt.Errorf("k8sVersion not sem-ver %s %v", k8sVersion, err)
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}
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for k := range versionData {
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testRange, err := semver.ParseRange(k)
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if err != nil {
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logrus.Errorf("range for %s not sem-ver %v %v", templateName, testRange, err)
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continue
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}
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if testRange(toMatch) {
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return metadata.K8sVersionToTemplates[templates.TemplateKeys][versionData[k]], nil
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}
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}
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return "", fmt.Errorf("no %s template found for k8sVersion %s", templateName, k8sVersion)
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}
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