// prepareUpdate builds an updated release for an update operation.
func (s *releaseServer) prepareUpdate(req *services.UpdateReleaseRequest) (*release.Release, *release.Release, error) {
if req.Name == "" {
return nil, nil, errMissingRelease
}
if req.Chart == nil {
return nil, nil, errMissingChart
}
// finds the non-deleted release with the given name
currentRelease, err := s.env.Releases.Deployed(req.Name)
if err != nil {
return nil, nil, err
}
// If new values were not supplied in the upgrade, re-use the existing values.
s.reuseValues(req, currentRelease)
ts := timeconv.Now()
options := chartutil.ReleaseOptions{
Name: req.Name,
Time: ts,
Namespace: currentRelease.Namespace,
}
valuesToRender, err := chartutil.ToRenderValues(req.Chart, req.Values, options)
if err != nil {
return nil, nil, err
}
hooks, manifestDoc, notesTxt, err := s.renderResources(req.Chart, valuesToRender)
if err != nil {
return nil, nil, err
}
// Store an updated release.
updatedRelease := &release.Release{
Name: req.Name,
Namespace: currentRelease.Namespace,
Chart: req.Chart,
Config: req.Values,
Info: &release.Info{
FirstDeployed: currentRelease.Info.FirstDeployed,
LastDeployed: ts,
Status: &release.Status{Code: release.Status_UNKNOWN},
},
Version: currentRelease.Version + 1,
Manifest: manifestDoc.String(),
Hooks: hooks,
}
if len(notesTxt) > 0 {
updatedRelease.Info.Status.Notes = notesTxt
}
return currentRelease, updatedRelease, nil
}
// prepareRelease builds a release for an install operation.
func (s *releaseServer) prepareRelease(req *services.InstallReleaseRequest) (*release.Release, error) {
if req.Chart == nil {
return nil, errMissingChart
}
name, err := s.uniqName(req.Name, req.ReuseName)
if err != nil {
return nil, err
}
ts := timeconv.Now()
options := chartutil.ReleaseOptions{Name: name, Time: ts, Namespace: req.Namespace}
valuesToRender, err := chartutil.ToRenderValues(req.Chart, req.Values, options)
if err != nil {
return nil, err
}
hooks, manifestDoc, notesTxt, err := s.renderResources(req.Chart, valuesToRender)
if err != nil {
return nil, err
}
// Store a release.
rel := &release.Release{
Name: name,
Namespace: req.Namespace,
Chart: req.Chart,
Config: req.Values,
Info: &release.Info{
FirstDeployed: ts,
LastDeployed: ts,
Status: &release.Status{Code: release.Status_UNKNOWN},
},
Manifest: manifestDoc.String(),
Hooks: hooks,
Version: 1,
}
if len(notesTxt) > 0 {
rel.Info.Status.Notes = notesTxt
}
return rel, nil
}
// prepareRelease builds a release for an install operation.
func (s *ReleaseServer) prepareRelease(req *services.InstallReleaseRequest) (*release.Release, error) {
if req.Chart == nil {
return nil, errMissingChart
}
name, err := s.uniqName(req.Name, req.ReuseName)
if err != nil {
return nil, err
}
revision := 1
ts := timeconv.Now()
options := chartutil.ReleaseOptions{
Name: name,
Time: ts,
Namespace: req.Namespace,
Revision: revision,
IsInstall: true,
}
valuesToRender, err := chartutil.ToRenderValues(req.Chart, req.Values, options)
if err != nil {
return nil, err
}
hooks, manifestDoc, notesTxt, err := s.renderResources(req.Chart, valuesToRender)
if err != nil {
// Return a release with partial data so that client can show debugging
// information.
rel := &release.Release{
Name: name,
Namespace: req.Namespace,
Chart: req.Chart,
Config: req.Values,
Info: &release.Info{
FirstDeployed: ts,
LastDeployed: ts,
Status: &release.Status{Code: release.Status_UNKNOWN},
},
Version: 0,
}
if manifestDoc != nil {
rel.Manifest = manifestDoc.String()
}
return rel, err
}
// Store a release.
rel := &release.Release{
Name: name,
Namespace: req.Namespace,
Chart: req.Chart,
Config: req.Values,
Info: &release.Info{
FirstDeployed: ts,
LastDeployed: ts,
Status: &release.Status{Code: release.Status_UNKNOWN},
},
Manifest: manifestDoc.String(),
Hooks: hooks,
Version: int32(revision),
}
if len(notesTxt) > 0 {
rel.Info.Status.Notes = notesTxt
}
return rel, nil
}
// Templates lints the templates in the Linter.
func Templates(linter *support.Linter) {
templatesPath := filepath.Join(linter.ChartDir, "templates")
templatesDirExist := linter.RunLinterRule(support.WarningSev, validateTemplatesDir(templatesPath))
// Templates directory is optional for now
if !templatesDirExist {
return
}
// Load chart and parse templates, based on tiller/release_server
chart, err := chartutil.Load(linter.ChartDir)
chartLoaded := linter.RunLinterRule(support.ErrorSev, validateNoError(err))
if !chartLoaded {
return
}
options := chartutil.ReleaseOptions{Name: "testRelease", Time: timeconv.Now(), Namespace: "testNamespace"}
valuesToRender, err := chartutil.ToRenderValues(chart, chart.Values, options)
if err != nil {
// FIXME: This seems to generate a duplicate, but I can't find where the first
// error is coming from.
//linter.RunLinterRule(support.ErrorSev, err)
return
}
renderedContentMap, err := engine.New().Render(chart, valuesToRender)
renderOk := linter.RunLinterRule(support.ErrorSev, validateNoError(err))
if !renderOk {
return
}
/* Iterate over all the templates to check:
- It is a .yaml file
- All the values in the template file is defined
- {{}} include | quote
- Generated content is a valid Yaml file
- Metadata.Namespace is not set
*/
for _, template := range chart.Templates {
fileName, preExecutedTemplate := template.Name, template.Data
linter.RunLinterRule(support.ErrorSev, validateAllowedExtension(fileName))
// We only apply the following lint rules to yaml files
if filepath.Ext(fileName) != ".yaml" {
continue
}
// Check that all the templates have a matching value
linter.RunLinterRule(support.WarningSev, validateNonMissingValues(fileName, templatesPath, valuesToRender, preExecutedTemplate))
linter.RunLinterRule(support.WarningSev, validateQuotes(fileName, string(preExecutedTemplate)))
renderedContent := renderedContentMap[fileName]
var yamlStruct K8sYamlStruct
// Even though K8sYamlStruct only defines Metadata namespace, an error in any other
// key will be raised as well
err := yaml.Unmarshal([]byte(renderedContent), &yamlStruct)
validYaml := linter.RunLinterRule(support.ErrorSev, validateYamlContent(fileName, err))
if !validYaml {
continue
}
linter.RunLinterRule(support.ErrorSev, validateNoNamespace(fileName, yamlStruct))
}
}
func (s *releaseServer) InstallRelease(c ctx.Context, req *services.InstallReleaseRequest) (*services.InstallReleaseResponse, error) {
if req.Chart == nil {
return nil, errMissingChart
}
name, err := s.uniqName(req.Name)
if err != nil {
return nil, err
}
ts := timeconv.Now()
options := chartutil.ReleaseOptions{Name: name, Time: ts, Namespace: s.env.Namespace}
valuesToRender, err := chartutil.ToRenderValues(req.Chart, req.Values, options)
if err != nil {
return nil, err
}
renderer := s.engine(req.Chart)
files, err := renderer.Render(req.Chart, valuesToRender)
if err != nil {
return nil, err
}
b := bytes.NewBuffer(nil)
for name, file := range files {
// Ignore templates that starts with underscore to handle them as partials
if strings.HasPrefix(path.Base(name), "_") {
continue
}
// Ignore empty documents because the Kubernetes library can't handle
// them.
if len(file) > 0 {
b.WriteString("\n---\n# Source: " + name + "\n")
b.WriteString(file)
}
}
// Store a release.
r := &release.Release{
Name: name,
Chart: req.Chart,
Config: req.Values,
Info: &release.Info{
FirstDeployed: ts,
LastDeployed: ts,
Status: &release.Status{Code: release.Status_UNKNOWN},
},
Manifest: b.String(),
}
res := &services.InstallReleaseResponse{Release: r}
if req.DryRun {
log.Printf("Dry run for %s", name)
return res, nil
}
if err := s.env.KubeClient.Create(s.env.Namespace, b); err != nil {
r.Info.Status.Code = release.Status_FAILED
log.Printf("warning: Release %q failed: %s", name, err)
if err := s.env.Releases.Create(r); err != nil {
log.Printf("warning: Failed to record release %q: %s", name, err)
}
return res, fmt.Errorf("release %s failed: %s", name, err)
}
// This is a tricky case. The release has been created, but the result
// cannot be recorded. The truest thing to tell the user is that the
// release was created. However, the user will not be able to do anything
// further with this release.
//
// One possible strategy would be to do a timed retry to see if we can get
// this stored in the future.
if err := s.env.Releases.Create(r); err != nil {
log.Printf("warning: Failed to record release %q: %s", name, err)
return res, nil
}
r.Info.Status.Code = release.Status_DEPLOYED
return res, nil
}