mirror of https://github.com/helm/helm
*ReleaseServer.InstallRelease -> tiller/release_install.go *ReleaseServer.UpdateRelease -> tiller/release_update.gopull/2477/head
fibonacci1729
8 years ago
parent
d76c1049d0
commit
2ae276ae39
@ -0,0 +1,216 @@
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/*
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Copyright 2016 The Kubernetes 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 tiller
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import (
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"fmt"
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ctx "golang.org/x/net/context"
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"k8s.io/helm/pkg/chartutil"
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"k8s.io/helm/pkg/hooks"
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"k8s.io/helm/pkg/proto/hapi/release"
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"k8s.io/helm/pkg/proto/hapi/services"
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relutil "k8s.io/helm/pkg/releaseutil"
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"k8s.io/helm/pkg/timeconv"
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"strings"
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)
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// InstallRelease installs a release and stores the release record.
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func (s *ReleaseServer) InstallRelease(c ctx.Context, req *services.InstallReleaseRequest) (*services.InstallReleaseResponse, error) {
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rel, err := s.prepareRelease(req)
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if err != nil {
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s.Log("Failed install prepare step: %s", err)
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res := &services.InstallReleaseResponse{Release: rel}
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// On dry run, append the manifest contents to a failed release. This is
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// a stop-gap until we can revisit an error backchannel post-2.0.
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if req.DryRun && strings.HasPrefix(err.Error(), "YAML parse error") {
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err = fmt.Errorf("%s\n%s", err, rel.Manifest)
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}
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return res, err
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}
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res, err := s.performRelease(rel, req)
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if err != nil {
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s.Log("Failed install perform step: %s", err)
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}
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return res, err
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}
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// prepareRelease builds a release for an install operation.
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func (s *ReleaseServer) prepareRelease(req *services.InstallReleaseRequest) (*release.Release, error) {
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if req.Chart == nil {
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return nil, errMissingChart
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}
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name, err := s.uniqName(req.Name, req.ReuseName)
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if err != nil {
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return nil, err
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}
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caps, err := capabilities(s.clientset.Discovery())
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if err != nil {
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return nil, err
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}
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revision := 1
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ts := timeconv.Now()
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options := chartutil.ReleaseOptions{
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Name: name,
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Time: ts,
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Namespace: req.Namespace,
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Revision: revision,
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IsInstall: true,
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}
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valuesToRender, err := chartutil.ToRenderValuesCaps(req.Chart, req.Values, options, caps)
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if err != nil {
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return nil, err
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}
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hooks, manifestDoc, notesTxt, err := s.renderResources(req.Chart, valuesToRender, caps.APIVersions)
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if err != nil {
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// Return a release with partial data so that client can show debugging
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// information.
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rel := &release.Release{
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Name: name,
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Namespace: req.Namespace,
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Chart: req.Chart,
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Config: req.Values,
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Info: &release.Info{
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FirstDeployed: ts,
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LastDeployed: ts,
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Status: &release.Status{Code: release.Status_UNKNOWN},
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Description: fmt.Sprintf("Install failed: %s", err),
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},
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Version: 0,
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}
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if manifestDoc != nil {
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rel.Manifest = manifestDoc.String()
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}
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return rel, err
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}
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// Store a release.
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rel := &release.Release{
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Name: name,
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Namespace: req.Namespace,
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Chart: req.Chart,
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Config: req.Values,
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Info: &release.Info{
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FirstDeployed: ts,
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LastDeployed: ts,
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Status: &release.Status{Code: release.Status_UNKNOWN},
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Description: "Initial install underway", // Will be overwritten.
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},
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Manifest: manifestDoc.String(),
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Hooks: hooks,
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Version: int32(revision),
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}
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if len(notesTxt) > 0 {
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rel.Info.Status.Notes = notesTxt
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}
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err = validateManifest(s.env.KubeClient, req.Namespace, manifestDoc.Bytes())
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return rel, err
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}
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// performRelease runs a release.
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func (s *ReleaseServer) performRelease(r *release.Release, req *services.InstallReleaseRequest) (*services.InstallReleaseResponse, error) {
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res := &services.InstallReleaseResponse{Release: r}
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if req.DryRun {
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s.Log("Dry run for %s", r.Name)
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res.Release.Info.Description = "Dry run complete"
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return res, nil
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}
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// pre-install hooks
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if !req.DisableHooks {
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if err := s.execHook(r.Hooks, r.Name, r.Namespace, hooks.PreInstall, req.Timeout); err != nil {
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return res, err
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}
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}
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switch h, err := s.env.Releases.History(req.Name); {
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// if this is a replace operation, append to the release history
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case req.ReuseName && err == nil && len(h) >= 1:
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// get latest release revision
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relutil.Reverse(h, relutil.SortByRevision)
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// old release
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old := h[0]
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// update old release status
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old.Info.Status.Code = release.Status_SUPERSEDED
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s.recordRelease(old, true)
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// update new release with next revision number
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// so as to append to the old release's history
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r.Version = old.Version + 1
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updateReq := &services.UpdateReleaseRequest{
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Wait: req.Wait,
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Recreate: false,
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Timeout: req.Timeout,
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}
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if err := s.ReleaseModule.Update(old, r, updateReq, s.env); err != nil {
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msg := fmt.Sprintf("Release replace %q failed: %s", r.Name, err)
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s.Log("warning: %s", msg)
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old.Info.Status.Code = release.Status_SUPERSEDED
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r.Info.Status.Code = release.Status_FAILED
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r.Info.Description = msg
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s.recordRelease(old, true)
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s.recordRelease(r, false)
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return res, err
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}
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default:
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// nothing to replace, create as normal
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// regular manifests
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if err := s.ReleaseModule.Create(r, req, s.env); err != nil {
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msg := fmt.Sprintf("Release %q failed: %s", r.Name, err)
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s.Log("warning: %s", msg)
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r.Info.Status.Code = release.Status_FAILED
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r.Info.Description = msg
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s.recordRelease(r, false)
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return res, fmt.Errorf("release %s failed: %s", r.Name, err)
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}
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}
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// post-install hooks
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if !req.DisableHooks {
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if err := s.execHook(r.Hooks, r.Name, r.Namespace, hooks.PostInstall, req.Timeout); err != nil {
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msg := fmt.Sprintf("Release %q failed post-install: %s", r.Name, err)
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s.Log("warning: %s", msg)
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r.Info.Status.Code = release.Status_FAILED
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r.Info.Description = msg
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s.recordRelease(r, false)
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return res, err
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}
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}
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r.Info.Status.Code = release.Status_DEPLOYED
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r.Info.Description = "Install complete"
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// This is a tricky case. The release has been created, but the result
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// cannot be recorded. The truest thing to tell the user is that the
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// release was created. However, the user will not be able to do anything
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// further with this release.
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//
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// One possible strategy would be to do a timed retry to see if we can get
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// this stored in the future.
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s.recordRelease(r, false)
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return res, nil
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}
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@ -0,0 +1,168 @@
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/*
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Copyright 2016 The Kubernetes 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 tiller
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import (
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"fmt"
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ctx "golang.org/x/net/context"
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"k8s.io/helm/pkg/chartutil"
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"k8s.io/helm/pkg/hooks"
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"k8s.io/helm/pkg/proto/hapi/release"
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"k8s.io/helm/pkg/proto/hapi/services"
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"k8s.io/helm/pkg/timeconv"
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)
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// UpdateRelease takes an existing release and new information, and upgrades the release.
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func (s *ReleaseServer) UpdateRelease(c ctx.Context, req *services.UpdateReleaseRequest) (*services.UpdateReleaseResponse, error) {
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err := s.env.Releases.LockRelease(req.Name)
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if err != nil {
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return nil, err
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}
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defer s.env.Releases.UnlockRelease(req.Name)
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currentRelease, updatedRelease, err := s.prepareUpdate(req)
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if err != nil {
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return nil, err
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}
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res, err := s.performUpdate(currentRelease, updatedRelease, req)
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if err != nil {
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return res, err
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}
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if !req.DryRun {
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if err := s.env.Releases.Create(updatedRelease); err != nil {
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return res, err
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}
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|
}
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return res, nil
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}
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// prepareUpdate builds an updated release for an update operation.
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func (s *ReleaseServer) prepareUpdate(req *services.UpdateReleaseRequest) (*release.Release, *release.Release, error) {
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if !ValidName.MatchString(req.Name) {
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return nil, nil, errMissingRelease
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|
}
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if req.Chart == nil {
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return nil, nil, errMissingChart
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|
}
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// finds the non-deleted release with the given name
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currentRelease, err := s.env.Releases.Last(req.Name)
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if err != nil {
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return nil, nil, err
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|
}
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// If new values were not supplied in the upgrade, re-use the existing values.
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|
if err := s.reuseValues(req, currentRelease); err != nil {
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|
return nil, nil, err
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|
}
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|
// Increment revision count. This is passed to templates, and also stored on
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// the release object.
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revision := currentRelease.Version + 1
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ts := timeconv.Now()
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|
options := chartutil.ReleaseOptions{
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|
Name: req.Name,
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Time: ts,
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|
Namespace: currentRelease.Namespace,
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IsUpgrade: true,
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|
Revision: int(revision),
|
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|
}
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|
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|
caps, err := capabilities(s.clientset.Discovery())
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||||||
|
if err != nil {
|
||||||
|
return nil, nil, err
|
||||||
|
}
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||||||
|
valuesToRender, err := chartutil.ToRenderValuesCaps(req.Chart, req.Values, options, caps)
|
||||||
|
if err != nil {
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|
return nil, nil, err
|
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|
}
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||||||
|
|
||||||
|
hooks, manifestDoc, notesTxt, err := s.renderResources(req.Chart, valuesToRender, caps.APIVersions)
|
||||||
|
if err != nil {
|
||||||
|
return nil, nil, err
|
||||||
|
}
|
||||||
|
|
||||||
|
// Store an updated release.
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||||||
|
updatedRelease := &release.Release{
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|
Name: req.Name,
|
||||||
|
Namespace: currentRelease.Namespace,
|
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|
Chart: req.Chart,
|
||||||
|
Config: req.Values,
|
||||||
|
Info: &release.Info{
|
||||||
|
FirstDeployed: currentRelease.Info.FirstDeployed,
|
||||||
|
LastDeployed: ts,
|
||||||
|
Status: &release.Status{Code: release.Status_UNKNOWN},
|
||||||
|
Description: "Preparing upgrade", // This should be overwritten later.
|
||||||
|
},
|
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|
Version: revision,
|
||||||
|
Manifest: manifestDoc.String(),
|
||||||
|
Hooks: hooks,
|
||||||
|
}
|
||||||
|
|
||||||
|
if len(notesTxt) > 0 {
|
||||||
|
updatedRelease.Info.Status.Notes = notesTxt
|
||||||
|
}
|
||||||
|
err = validateManifest(s.env.KubeClient, currentRelease.Namespace, manifestDoc.Bytes())
|
||||||
|
return currentRelease, updatedRelease, err
|
||||||
|
}
|
||||||
|
|
||||||
|
func (s *ReleaseServer) performUpdate(originalRelease, updatedRelease *release.Release, req *services.UpdateReleaseRequest) (*services.UpdateReleaseResponse, error) {
|
||||||
|
res := &services.UpdateReleaseResponse{Release: updatedRelease}
|
||||||
|
|
||||||
|
if req.DryRun {
|
||||||
|
s.Log("Dry run for %s", updatedRelease.Name)
|
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|
res.Release.Info.Description = "Dry run complete"
|
||||||
|
return res, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// pre-upgrade hooks
|
||||||
|
if !req.DisableHooks {
|
||||||
|
if err := s.execHook(updatedRelease.Hooks, updatedRelease.Name, updatedRelease.Namespace, hooks.PreUpgrade, req.Timeout); err != nil {
|
||||||
|
return res, err
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if err := s.ReleaseModule.Update(originalRelease, updatedRelease, req, s.env); err != nil {
|
||||||
|
msg := fmt.Sprintf("Upgrade %q failed: %s", updatedRelease.Name, err)
|
||||||
|
s.Log("warning: %s", msg)
|
||||||
|
originalRelease.Info.Status.Code = release.Status_SUPERSEDED
|
||||||
|
updatedRelease.Info.Status.Code = release.Status_FAILED
|
||||||
|
updatedRelease.Info.Description = msg
|
||||||
|
s.recordRelease(originalRelease, true)
|
||||||
|
s.recordRelease(updatedRelease, false)
|
||||||
|
return res, err
|
||||||
|
}
|
||||||
|
|
||||||
|
// post-upgrade hooks
|
||||||
|
if !req.DisableHooks {
|
||||||
|
if err := s.execHook(updatedRelease.Hooks, updatedRelease.Name, updatedRelease.Namespace, hooks.PostUpgrade, req.Timeout); err != nil {
|
||||||
|
return res, err
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
originalRelease.Info.Status.Code = release.Status_SUPERSEDED
|
||||||
|
s.recordRelease(originalRelease, true)
|
||||||
|
|
||||||
|
updatedRelease.Info.Status.Code = release.Status_DEPLOYED
|
||||||
|
updatedRelease.Info.Description = "Upgrade complete"
|
||||||
|
|
||||||
|
return res, nil
|
||||||
|
}
|
||||||
Loading…
Reference in new issue