コード例 #1
0
func (s *releaseServer) GetReleaseStatus(c ctx.Context, req *services.GetReleaseStatusRequest) (*services.GetReleaseStatusResponse, error) {
	if !checkClientVersion(c) {
		return nil, errIncompatibleVersion
	}

	if req.Name == "" {
		return nil, errMissingRelease
	}

	var rel *release.Release

	if req.Version <= 0 {
		h, err := s.env.Releases.History(req.Name)
		if err != nil {
			return nil, fmt.Errorf("getting deployed release '%s': %s", req.Name, err)
		}
		if len(h) < 1 {
			return nil, errMissingRelease
		}

		relutil.Reverse(h, relutil.SortByRevision)
		rel = h[0]

	} else {
		var err error
		if rel, err = s.env.Releases.Get(req.Name, req.Version); err != nil {
			return nil, fmt.Errorf("getting release '%s' (v%d): %s", req.Name, req.Version, err)
		}
	}

	if rel.Info == nil {
		return nil, errors.New("release info is missing")
	}
	if rel.Chart == nil {
		return nil, errors.New("release chart is missing")
	}

	sc := rel.Info.Status.Code
	statusResp := &services.GetReleaseStatusResponse{Info: rel.Info, Namespace: rel.Namespace}

	// Ok, we got the status of the release as we had jotted down, now we need to match the
	// manifest we stashed away with reality from the cluster.
	kubeCli := s.env.KubeClient
	resp, err := kubeCli.Get(rel.Namespace, bytes.NewBufferString(rel.Manifest))
	if sc == release.Status_DELETED || sc == release.Status_FAILED {
		// Skip errors if this is already deleted or failed.
		return statusResp, nil
	} else if err != nil {
		log.Printf("warning: Get for %s failed: %v", rel.Name, err)
		return nil, err
	}
	rel.Info.Status.Resources = resp
	return statusResp, nil
}
コード例 #2
0
ファイル: storage.go プロジェクト: kubernetes/helm
// Last fetches the last revision of the named release.
func (s *Storage) Last(name string) (*rspb.Release, error) {
	h, err := s.History(name)
	if err != nil {
		return nil, err
	}
	if len(h) == 0 {
		return nil, fmt.Errorf("no revision for release %q", name)
	}

	relutil.Reverse(h, relutil.SortByRevision)
	return h[0], nil
}
コード例 #3
0
func (s *releaseServer) uniqName(start string, reuse bool) (string, error) {

	// If a name is supplied, we check to see if that name is taken. If not, it
	// is granted. If reuse is true and a deleted release with that name exists,
	// we re-grant it. Otherwise, an error is returned.
	if start != "" {

		if len(start) > releaseNameMaxLen {
			return "", fmt.Errorf("release name %q exceeds max length of %d", start, releaseNameMaxLen)
		}

		h, err := s.env.Releases.History(start)
		if err != nil || len(h) < 1 {
			return start, nil
		}
		relutil.Reverse(h, relutil.SortByRevision)
		rel := h[0]

		if st := rel.Info.Status.Code; reuse && (st == release.Status_DELETED || st == release.Status_FAILED) {
			// Allowe re-use of names if the previous release is marked deleted.
			log.Printf("reusing name %q", start)
			return start, nil
		} else if reuse {
			return "", errors.New("cannot re-use a name that is still in use")
		}

		return "", fmt.Errorf("a release named %q already exists", start)
	}

	maxTries := 5
	for i := 0; i < maxTries; i++ {
		namer := moniker.New()
		name := namer.NameSep("-")
		if len(name) > releaseNameMaxLen {
			name = name[:releaseNameMaxLen]
		}
		if _, err := s.env.Releases.Get(name, 1); err == driver.ErrReleaseNotFound {
			return name, nil
		}
		log.Printf("info: Name %q is taken. Searching again.", name)
	}
	log.Printf("warning: No available release names found after %d tries", maxTries)
	return "ERROR", errors.New("no available release name found")
}
コード例 #4
0
func (s *releaseServer) GetHistory(ctx context.Context, req *tpb.GetHistoryRequest) (*tpb.GetHistoryResponse, error) {
	if !checkClientVersion(ctx) {
		return nil, errIncompatibleVersion
	}

	h, err := s.env.Releases.History(req.Name)
	if err != nil {
		return nil, err
	}

	relutil.Reverse(h, relutil.SortByRevision)

	var resp tpb.GetHistoryResponse
	for i := 0; i < min(len(h), int(req.Max)); i++ {
		resp.Releases = append(resp.Releases, h[i])
	}

	return &resp, nil
}
コード例 #5
0
// performRelease runs a release.
func (s *releaseServer) performRelease(r *release.Release, req *services.InstallReleaseRequest) (*services.InstallReleaseResponse, error) {
	res := &services.InstallReleaseResponse{Release: r}

	if req.DryRun {
		log.Printf("Dry run for %s", r.Name)
		return res, nil
	}

	// pre-install hooks
	if !req.DisableHooks {
		if err := s.execHook(r.Hooks, r.Name, r.Namespace, preInstall); err != nil {
			return res, err
		}
	}

	switch h, err := s.env.Releases.History(req.Name); {
	// if this is a replace operation, append to the release history
	case req.ReuseName && err == nil && len(h) >= 1:
		// get latest release revision
		relutil.Reverse(h, relutil.SortByRevision)

		// old release
		old := h[0]

		// update old release status
		old.Info.Status.Code = release.Status_SUPERSEDED
		s.recordRelease(old, true)

		// update new release with next revision number
		// so as to append to the old release's history
		r.Version = old.Version + 1

		if err := s.performKubeUpdate(old, r); err != nil {
			log.Printf("warning: Release replace %q failed: %s", r.Name, err)
			old.Info.Status.Code = release.Status_SUPERSEDED
			r.Info.Status.Code = release.Status_FAILED
			s.recordRelease(old, true)
			s.recordRelease(r, false)
			return res, err
		}

	default:
		// nothing to replace, create as normal
		// regular manifests
		b := bytes.NewBufferString(r.Manifest)
		if err := s.env.KubeClient.Create(r.Namespace, b); err != nil {
			log.Printf("warning: Release %q failed: %s", r.Name, err)
			r.Info.Status.Code = release.Status_FAILED
			s.recordRelease(r, false)
			return res, fmt.Errorf("release %s failed: %s", r.Name, err)
		}
	}

	// post-install hooks
	if !req.DisableHooks {
		if err := s.execHook(r.Hooks, r.Name, r.Namespace, postInstall); err != nil {
			log.Printf("warning: Release %q failed post-install: %s", r.Name, err)
			r.Info.Status.Code = release.Status_FAILED
			s.recordRelease(r, false)
			return res, 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.
	r.Info.Status.Code = release.Status_DEPLOYED
	s.recordRelease(r, false)

	return res, nil
}