Example #1
0
// Get takes the reference to scale subresource and returns the subresource or error, if one occurs.
func (c *scales) Get(kind string, name string) (result *extensions.Scale, err error) {
	result = &extensions.Scale{}

	// TODO this method needs to take a proper unambiguous kind
	fullyQualifiedKind := schema.GroupVersionKind{Kind: kind}
	resource, _ := meta.KindToResource(fullyQualifiedKind)

	err = c.client.Get().
		Namespace(c.ns).
		Resource(resource.Resource).
		Name(name).
		SubResource("scale").
		Do().
		Into(result)
	return
}
Example #2
0
func (c *scales) Update(kind string, scale *v1beta1.Scale) (result *v1beta1.Scale, err error) {
	result = &v1beta1.Scale{}

	// TODO this method needs to take a proper unambiguous kind
	fullyQualifiedKind := schema.GroupVersionKind{Kind: kind}
	resource, _ := meta.KindToResource(fullyQualifiedKind)

	err = c.client.Put().
		Namespace(scale.Namespace).
		Resource(resource.Resource).
		Name(scale.Name).
		SubResource("scale").
		Body(scale).
		Do().
		Into(result)
	return
}
Example #3
0
// InstallThirdPartyResource installs a third party resource specified by 'rsrc'.  When a resource is
// installed a corresponding RESTful resource is added as a valid path in the web service provided by
// the master.
//
// For example, if you install a resource ThirdPartyResource{ Name: "foo.company.com", Versions: {"v1"} }
// then the following RESTful resource is created on the server:
//   http://<host>/apis/company.com/v1/foos/...
func (m *ThirdPartyResourceServer) InstallThirdPartyResource(rsrc *extensions.ThirdPartyResource) error {
	kind, group, err := thirdpartyresourcedata.ExtractApiGroupAndKind(rsrc)
	if err != nil {
		return err
	}
	if len(rsrc.Versions) == 0 {
		return fmt.Errorf("ThirdPartyResource %s has no defined versions", rsrc.Name)
	}
	plural, _ := meta.KindToResource(schema.GroupVersionKind{
		Group:   group,
		Version: rsrc.Versions[0].Name,
		Kind:    kind,
	})
	path := extensionsrest.MakeThirdPartyPath(group)

	groupVersion := metav1.GroupVersionForDiscovery{
		GroupVersion: group + "/" + rsrc.Versions[0].Name,
		Version:      rsrc.Versions[0].Name,
	}
	apiGroup := metav1.APIGroup{
		Name:             group,
		Versions:         []metav1.GroupVersionForDiscovery{groupVersion},
		PreferredVersion: groupVersion,
	}

	thirdparty := m.thirdpartyapi(group, kind, rsrc.Versions[0].Name, plural.Resource)

	// If storage exists, this group has already been added, just update
	// the group with the new API
	if m.hasThirdPartyGroupStorage(path) {
		m.addThirdPartyResourceStorage(path, plural.Resource, thirdparty.Storage[plural.Resource].(*thirdpartyresourcedatastore.REST), apiGroup)
		return thirdparty.UpdateREST(m.genericAPIServer.HandlerContainer.Container)
	}

	if err := thirdparty.InstallREST(m.genericAPIServer.HandlerContainer.Container); err != nil {
		glog.Errorf("Unable to setup thirdparty api: %v", err)
	}
	m.genericAPIServer.HandlerContainer.Add(genericapi.NewGroupWebService(api.Codecs, path, apiGroup))

	m.addThirdPartyResourceStorage(path, plural.Resource, thirdparty.Storage[plural.Resource].(*thirdpartyresourcedatastore.REST), apiGroup)
	api.Registry.AddThirdPartyAPIGroupVersions(schema.GroupVersion{Group: group, Version: rsrc.Versions[0].Name})
	return nil
}
Example #4
0
// HasThirdPartyResource returns true if a particular third party resource currently installed.
func (m *ThirdPartyResourceServer) HasThirdPartyResource(rsrc *extensions.ThirdPartyResource) (bool, error) {
	kind, group, err := thirdpartyresourcedata.ExtractApiGroupAndKind(rsrc)
	if err != nil {
		return false, err
	}
	path := extensionsrest.MakeThirdPartyPath(group)
	m.thirdPartyResourcesLock.Lock()
	defer m.thirdPartyResourcesLock.Unlock()
	entry := m.thirdPartyResources[path]
	if entry == nil {
		return false, nil
	}
	plural, _ := meta.KindToResource(schema.GroupVersionKind{
		Group:   group,
		Version: rsrc.Versions[0].Name,
		Kind:    kind,
	})
	_, found := entry.storage[plural.Resource]
	return found, nil
}
Example #5
0
func (t *thirdPartyResourceDataMapper) getResource() schema.GroupVersionResource {
	plural, _ := meta.KindToResource(t.getKind())

	return plural
}
Example #6
0
func RunRollingUpdate(f cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, options *resource.FilenameOptions) error {
	if len(os.Args) > 1 && os.Args[1] == "rollingupdate" {
		printDeprecationWarning("rolling-update", "rollingupdate")
	}
	err := validateArguments(cmd, options.Filenames, args)
	if err != nil {
		return err
	}

	deploymentKey := cmdutil.GetFlagString(cmd, "deployment-label-key")
	filename := ""
	image := cmdutil.GetFlagString(cmd, "image")
	pullPolicy := cmdutil.GetFlagString(cmd, "image-pull-policy")
	oldName := args[0]
	rollback := cmdutil.GetFlagBool(cmd, "rollback")
	period := cmdutil.GetFlagDuration(cmd, "update-period")
	interval := cmdutil.GetFlagDuration(cmd, "poll-interval")
	timeout := cmdutil.GetFlagDuration(cmd, "timeout")
	dryrun := cmdutil.GetDryRunFlag(cmd)
	outputFormat := cmdutil.GetFlagString(cmd, "output")
	container := cmdutil.GetFlagString(cmd, "container")

	if len(options.Filenames) > 0 {
		filename = options.Filenames[0]
	}

	cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	clientset, err := f.ClientSet()
	if err != nil {
		return err
	}
	coreClient := clientset.Core()

	var newRc *api.ReplicationController
	// fetch rc
	oldRc, err := coreClient.ReplicationControllers(cmdNamespace).Get(oldName, metav1.GetOptions{})
	if err != nil {
		if !errors.IsNotFound(err) || len(image) == 0 || len(args) > 1 {
			return err
		}
		// We're in the middle of a rename, look for an RC with a source annotation of oldName
		newRc, err := kubectl.FindSourceController(coreClient, cmdNamespace, oldName)
		if err != nil {
			return err
		}
		return kubectl.Rename(coreClient, newRc, oldName)
	}

	var keepOldName bool
	var replicasDefaulted bool

	mapper, typer := f.Object()

	if len(filename) != 0 {
		schema, err := f.Validator(cmdutil.GetFlagBool(cmd, "validate"), cmdutil.GetFlagString(cmd, "schema-cache-dir"))
		if err != nil {
			return err
		}

		request := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
			Schema(schema).
			NamespaceParam(cmdNamespace).DefaultNamespace().
			FilenameParam(enforceNamespace, &resource.FilenameOptions{Recursive: false, Filenames: []string{filename}}).
			Do()
		obj, err := request.Object()
		if err != nil {
			return err
		}
		var ok bool
		// Handle filename input from stdin. The resource builder always returns an api.List
		// when creating resource(s) from a stream.
		if list, ok := obj.(*api.List); ok {
			if len(list.Items) > 1 {
				return cmdutil.UsageError(cmd, "%s specifies multiple items", filename)
			}
			if len(list.Items) == 0 {
				return cmdutil.UsageError(cmd, "please make sure %s exists and is not empty", filename)
			}
			obj = list.Items[0]
		}
		newRc, ok = obj.(*api.ReplicationController)
		if !ok {
			if gvks, _, err := typer.ObjectKinds(obj); err == nil {
				return cmdutil.UsageError(cmd, "%s contains a %v not a ReplicationController", filename, gvks[0])
			}
			glog.V(4).Infof("Object %#v is not a ReplicationController", obj)
			return cmdutil.UsageError(cmd, "%s does not specify a valid ReplicationController", filename)
		}
		infos, err := request.Infos()
		if err != nil || len(infos) != 1 {
			glog.V(2).Infof("was not able to recover adequate information to discover if .spec.replicas was defaulted")
		} else {
			replicasDefaulted = isReplicasDefaulted(infos[0])
		}
	}
	// If the --image option is specified, we need to create a new rc with at least one different selector
	// than the old rc. This selector is the hash of the rc, with a suffix to provide uniqueness for
	// same-image updates.
	if len(image) != 0 {
		codec := api.Codecs.LegacyCodec(clientset.CoreClient.RESTClient().APIVersion())
		keepOldName = len(args) == 1
		newName := findNewName(args, oldRc)
		if newRc, err = kubectl.LoadExistingNextReplicationController(coreClient, cmdNamespace, newName); err != nil {
			return err
		}
		if newRc != nil {
			if inProgressImage := newRc.Spec.Template.Spec.Containers[0].Image; inProgressImage != image {
				return cmdutil.UsageError(cmd, "Found existing in-progress update to image (%s).\nEither continue in-progress update with --image=%s or rollback with --rollback", inProgressImage, inProgressImage)
			}
			fmt.Fprintf(out, "Found existing update in progress (%s), resuming.\n", newRc.Name)
		} else {
			config := &kubectl.NewControllerConfig{
				Namespace:     cmdNamespace,
				OldName:       oldName,
				NewName:       newName,
				Image:         image,
				Container:     container,
				DeploymentKey: deploymentKey,
			}
			if oldRc.Spec.Template.Spec.Containers[0].Image == image {
				if len(pullPolicy) == 0 {
					return cmdutil.UsageError(cmd, "--image-pull-policy (Always|Never|IfNotPresent) must be provided when --image is the same as existing container image")
				}
				config.PullPolicy = api.PullPolicy(pullPolicy)
			}
			newRc, err = kubectl.CreateNewControllerFromCurrentController(coreClient, codec, config)
			if err != nil {
				return err
			}
		}
		// Update the existing replication controller with pointers to the 'next' controller
		// and adding the <deploymentKey> label if necessary to distinguish it from the 'next' controller.
		oldHash, err := api.HashObject(oldRc, codec)
		if err != nil {
			return err
		}
		// If new image is same as old, the hash may not be distinct, so add a suffix.
		oldHash += "-orig"
		oldRc, err = kubectl.UpdateExistingReplicationController(coreClient, coreClient, oldRc, cmdNamespace, newRc.Name, deploymentKey, oldHash, out)
		if err != nil {
			return err
		}
	}

	if rollback {
		keepOldName = len(args) == 1
		newName := findNewName(args, oldRc)
		if newRc, err = kubectl.LoadExistingNextReplicationController(coreClient, cmdNamespace, newName); err != nil {
			return err
		}

		if newRc == nil {
			return cmdutil.UsageError(cmd, "Could not find %s to rollback.\n", newName)
		}
	}

	if oldName == newRc.Name {
		return cmdutil.UsageError(cmd, "%s cannot have the same name as the existing ReplicationController %s",
			filename, oldName)
	}

	updater := kubectl.NewRollingUpdater(newRc.Namespace, coreClient, coreClient)

	// To successfully pull off a rolling update the new and old rc have to differ
	// by at least one selector. Every new pod should have the selector and every
	// old pod should not have the selector.
	var hasLabel bool
	for key, oldValue := range oldRc.Spec.Selector {
		if newValue, ok := newRc.Spec.Selector[key]; ok && newValue != oldValue {
			hasLabel = true
			break
		}
	}
	if !hasLabel {
		return cmdutil.UsageError(cmd, "%s must specify a matching key with non-equal value in Selector for %s",
			filename, oldName)
	}
	// TODO: handle scales during rolling update
	if replicasDefaulted {
		newRc.Spec.Replicas = oldRc.Spec.Replicas
	}
	if dryrun {
		oldRcData := &bytes.Buffer{}
		newRcData := &bytes.Buffer{}
		if outputFormat == "" {
			oldRcData.WriteString(oldRc.Name)
			newRcData.WriteString(newRc.Name)
		} else {
			if err := f.PrintObject(cmd, mapper, oldRc, oldRcData); err != nil {
				return err
			}
			if err := f.PrintObject(cmd, mapper, newRc, newRcData); err != nil {
				return err
			}
		}
		fmt.Fprintf(out, "Rolling from:\n%s\nTo:\n%s\n", string(oldRcData.Bytes()), string(newRcData.Bytes()))
		return nil
	}
	updateCleanupPolicy := kubectl.DeleteRollingUpdateCleanupPolicy
	if keepOldName {
		updateCleanupPolicy = kubectl.RenameRollingUpdateCleanupPolicy
	}
	config := &kubectl.RollingUpdaterConfig{
		Out:            out,
		OldRc:          oldRc,
		NewRc:          newRc,
		UpdatePeriod:   period,
		Interval:       interval,
		Timeout:        timeout,
		CleanupPolicy:  updateCleanupPolicy,
		MaxUnavailable: intstr.FromInt(0),
		MaxSurge:       intstr.FromInt(1),
	}
	if rollback {
		err = kubectl.AbortRollingUpdate(config)
		if err != nil {
			return err
		}
		coreClient.ReplicationControllers(config.NewRc.Namespace).Update(config.NewRc)
	}
	err = updater.Update(config)
	if err != nil {
		return err
	}

	message := "rolling updated"
	if keepOldName {
		newRc.Name = oldName
	} else {
		message = fmt.Sprintf("rolling updated to %q", newRc.Name)
	}
	newRc, err = coreClient.ReplicationControllers(cmdNamespace).Get(newRc.Name, metav1.GetOptions{})
	if err != nil {
		return err
	}
	if outputFormat != "" {
		return f.PrintObject(cmd, mapper, newRc, out)
	}
	kinds, _, err := api.Scheme.ObjectKinds(newRc)
	if err != nil {
		return err
	}
	_, res := meta.KindToResource(kinds[0])
	cmdutil.PrintSuccess(mapper, false, out, res.Resource, oldName, dryrun, message)
	return nil
}