Example #1
0
func Run(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string) error {
	if len(os.Args) > 1 && os.Args[1] == "run-container" {
		printDeprecationWarning("run", "run-container")
	}

	if len(args) != 1 {
		return cmdutil.UsageError(cmd, "NAME is required for run")
	}

	namespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	client, err := f.Client()
	if err != nil {
		return err
	}

	generatorName := cmdutil.GetFlagString(cmd, "generator")
	generator, found := f.Generator(generatorName)
	if !found {
		return cmdutil.UsageError(cmd, fmt.Sprintf("Generator: %s not found.", generator))
	}
	names := generator.ParamNames()
	params := kubectl.MakeParams(cmd, names)
	params["name"] = args[0]

	err = kubectl.ValidateParams(names, params)
	if err != nil {
		return err
	}

	controller, err := generator.Generate(params)
	if err != nil {
		return err
	}

	inline := cmdutil.GetFlagString(cmd, "overrides")
	if len(inline) > 0 {
		controller, err = cmdutil.Merge(controller, inline, "ReplicationController")
		if err != nil {
			return err
		}
	}

	// TODO: extract this flag to a central location, when such a location exists.
	if !cmdutil.GetFlagBool(cmd, "dry-run") {
		controller, err = client.ReplicationControllers(namespace).Create(controller.(*api.ReplicationController))
		if err != nil {
			return err
		}
	}

	return f.PrintObject(cmd, controller, out)
}
Example #2
0
func (f *Factory) NewCmdRunContainer(out io.Writer) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "run-container <name> --image=<image> [--replicas=replicas] [--dry-run=<bool>]",
		Short: "Run a particular image on the cluster.",
		Long: `Create and run a particular image, possibly replicated.
Creates a replication controller to manage the created container(s)

Examples:
  $ kubectl run-container nginx --image=dockerfile/nginx
  <starts a single instance of nginx>

  $ kubectl run-container nginx --image=dockerfile/nginx --replicas=5
  <starts a replicated instance of nginx>
  
  $ kubectl run-container nginx --image=dockerfile/nginx --dry-run
  <just print the corresponding API objects, don't actually send them to the apiserver>`,
		Run: func(cmd *cobra.Command, args []string) {
			if len(args) != 1 {
				usageError(cmd, "<name> is required for run")
			}

			namespace := GetKubeNamespace(cmd)
			client, err := f.Client(cmd)
			checkErr(err)

			generatorName := GetFlagString(cmd, "generator")
			generator, found := kubectl.Generators[generatorName]
			if !found {
				usageError(cmd, fmt.Sprintf("Generator: %s not found.", generator))
			}
			names := generator.ParamNames()
			params := kubectl.MakeParams(cmd, names)
			params["name"] = args[0]

			err = kubectl.ValidateParams(names, params)
			checkErr(err)

			controller, err := generator.Generate(params)
			checkErr(err)

			// TODO: extract this flag to a central location, when such a location exists.
			if !GetFlagBool(cmd, "dry-run") {
				controller, err = client.ReplicationControllers(namespace).Create(controller.(*api.ReplicationController))
				checkErr(err)
			}
			PrintObject(cmd, controller, f, out)
		},
	}
	AddPrinterFlags(cmd)
	cmd.Flags().String("generator", "run-container/v1", "The name of the api generator that you want to use.  Default 'run-container-controller-v1'")
	cmd.Flags().String("image", "", "The image for the container you wish to run.")
	cmd.Flags().IntP("replicas", "r", 1, "Number of replicas to create for this container. Default 1")
	cmd.Flags().Bool("dry-run", false, "If true, only print the object that would be sent, don't actually do anything")
	cmd.Flags().StringP("labels", "l", "", "Labels to apply to the pod(s) created by this call to run.")
	return cmd
}
Example #3
0
func RunExpose(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string) error {
	namespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	mapper, typer := f.Object()
	r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
		ContinueOnError().
		NamespaceParam(namespace).DefaultNamespace().
		ResourceTypeOrNameArgs(false, args...).
		Flatten().
		Do()
	err = r.Err()
	if err != nil {
		return err
	}
	mapping, err := r.ResourceMapping()
	if err != nil {
		return err
	}
	infos, err := r.Infos()
	if err != nil {
		return err
	}
	if len(infos) > 1 {
		return fmt.Errorf("multiple resources provided: %v", args)
	}
	info := infos[0]

	// Get the input object
	client, err := f.RESTClient(mapping)
	if err != nil {
		return err
	}
	inputObject, err := resource.NewHelper(client, mapping).Get(info.Namespace, info.Name)
	if err != nil {
		return err
	}

	// Get the generator, setup and validate all required parameters
	generatorName := cmdutil.GetFlagString(cmd, "generator")
	generator, found := f.Generator(generatorName)
	if !found {
		return cmdutil.UsageError(cmd, fmt.Sprintf("generator %q not found.", generatorName))
	}
	names := generator.ParamNames()
	params := kubectl.MakeParams(cmd, names)
	params["default-name"] = info.Name
	if s, found := params["selector"]; !found || len(s) == 0 || cmdutil.GetFlagInt(cmd, "port") < 1 {
		if len(s) == 0 {
			s, err := f.PodSelectorForObject(inputObject)
			if err != nil {
				return cmdutil.UsageError(cmd, fmt.Sprintf("couldn't find selectors via --selector flag or introspection: %s", err))
			}
			params["selector"] = s
		}
		noPorts := true
		for _, param := range names {
			if param.Name == "port" {
				noPorts = false
				break
			}
		}
		if cmdutil.GetFlagInt(cmd, "port") < 0 && !noPorts {
			ports, err := f.PortsForObject(inputObject)
			if err != nil {
				return cmdutil.UsageError(cmd, fmt.Sprintf("couldn't find port via --port flag or introspection: %s", err))
			}
			switch len(ports) {
			case 0:
				return cmdutil.UsageError(cmd, "couldn't find port via --port flag or introspection")
			case 1:
				params["port"] = ports[0]
			default:
				return cmdutil.UsageError(cmd, fmt.Sprintf("multiple ports to choose from: %v, please explicitly specify a port using the --port flag.", ports))
			}
		}
	}
	if cmdutil.GetFlagBool(cmd, "create-external-load-balancer") {
		params["create-external-load-balancer"] = "true"
	}
	if len(params["labels"]) == 0 {
		labels, err := f.LabelsForObject(inputObject)
		if err != nil {
			return err
		}
		params["labels"] = kubectl.MakeLabels(labels)
	}
	if v := cmdutil.GetFlagString(cmd, "type"); v != "" {
		params["type"] = v
	}
	err = kubectl.ValidateParams(names, params)
	if err != nil {
		return err
	}

	// Expose new object
	object, err := generator.Generate(params)
	if err != nil {
		return err
	}

	inline := cmdutil.GetFlagString(cmd, "overrides")
	if len(inline) > 0 {
		object, err = cmdutil.Merge(object, inline, mapping.Kind)
		if err != nil {
			return err
		}
	}

	// TODO: extract this flag to a central location, when such a location exists.
	if !cmdutil.GetFlagBool(cmd, "dry-run") {
		resourceMapper := &resource.Mapper{typer, mapper, f.ClientMapperForCommand()}
		info, err := resourceMapper.InfoForObject(object)
		if err != nil {
			return err
		}
		data, err := info.Mapping.Codec.Encode(object)
		if err != nil {
			return err
		}
		_, err = resource.NewHelper(info.Client, info.Mapping).Create(namespace, false, data)
		if err != nil {
			return err
		}
	}

	return f.PrintObject(cmd, object, out)
}
Example #4
0
func RunExpose(f *Factory, out io.Writer, cmd *cobra.Command, args []string) error {
	if len(args) != 1 {
		return util.UsageError(cmd, "<name> is required for expose")
	}

	namespace, err := f.DefaultNamespace()
	if err != nil {
		return err
	}
	client, err := f.Client()
	if err != nil {
		return err
	}

	generatorName := util.GetFlagString(cmd, "generator")

	generator, found := kubectl.Generators[generatorName]
	if !found {
		return util.UsageError(cmd, fmt.Sprintf("Generator: %s not found.", generator))
	}
	if util.GetFlagInt(cmd, "port") < 1 {
		return util.UsageError(cmd, "--port is required and must be a positive integer.")
	}
	names := generator.ParamNames()
	params := kubectl.MakeParams(cmd, names)
	if len(util.GetFlagString(cmd, "service-name")) == 0 {
		params["name"] = args[0]
	} else {
		params["name"] = util.GetFlagString(cmd, "service-name")
	}
	if _, found := params["selector"]; !found {
		rc, err := client.ReplicationControllers(namespace).Get(args[0])
		if err != nil {
			return err
		}
		params["selector"] = kubectl.MakeLabels(rc.Spec.Selector)
	}
	if util.GetFlagBool(cmd, "create-external-load-balancer") {
		params["create-external-load-balancer"] = "true"
	}

	err = kubectl.ValidateParams(names, params)
	if err != nil {
		return err
	}

	service, err := generator.Generate(params)
	if err != nil {
		return err
	}

	inline := util.GetFlagString(cmd, "overrides")
	if len(inline) > 0 {
		service, err = util.Merge(service, inline, "Service")
		if err != nil {
			return err
		}
	}

	// TODO: extract this flag to a central location, when such a location exists.
	if !util.GetFlagBool(cmd, "dry-run") {
		service, err = client.Services(namespace).Create(service.(*api.Service))
		if err != nil {
			return err
		}
	}

	return f.PrintObject(cmd, service, out)
}
func RunExpose(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string) error {
	var name, resource string
	switch l := len(args); {
	case l == 2:
		resource, name = args[0], args[1]
	default:
		return cmdutil.UsageError(cmd, "the type and name of a resource to expose are required arguments")
	}

	namespace, err := f.DefaultNamespace()
	if err != nil {
		return err
	}
	client, err := f.Client()
	if err != nil {
		return err
	}

	generatorName := cmdutil.GetFlagString(cmd, "generator")

	generator, found := kubectl.Generators[generatorName]
	if !found {
		return cmdutil.UsageError(cmd, fmt.Sprintf("generator %q not found.", generator))
	}
	names := generator.ParamNames()
	params := kubectl.MakeParams(cmd, names)
	if len(cmdutil.GetFlagString(cmd, "service-name")) == 0 {
		params["name"] = name
	} else {
		params["name"] = cmdutil.GetFlagString(cmd, "service-name")
	}
	if s, found := params["selector"]; !found || len(s) == 0 || cmdutil.GetFlagInt(cmd, "port") < 1 {
		mapper, _ := f.Object()
		v, k, err := mapper.VersionAndKindForResource(resource)
		if err != nil {
			return err
		}
		mapping, err := mapper.RESTMapping(k, v)
		if err != nil {
			return err
		}
		if len(s) == 0 {
			s, err := f.PodSelectorForResource(mapping, namespace, name)
			if err != nil {
				return err
			}
			params["selector"] = s
		}
		if cmdutil.GetFlagInt(cmd, "port") < 0 {
			ports, err := f.PortsForResource(mapping, namespace, name)
			if err != nil {
				return err
			}
			if len(ports) == 0 {
				return cmdutil.UsageError(cmd, "couldn't find a suitable port via --port flag or introspection")
			}
			if len(ports) > 1 {
				return cmdutil.UsageError(cmd, "more than one port to choose from, please explicitly specify a port using the --port flag.")
			}
			params["port"] = ports[0]
		}
	}
	if cmdutil.GetFlagBool(cmd, "create-external-load-balancer") {
		params["create-external-load-balancer"] = "true"
	}

	err = kubectl.ValidateParams(names, params)
	if err != nil {
		return err
	}

	service, err := generator.Generate(params)
	if err != nil {
		return err
	}

	inline := cmdutil.GetFlagString(cmd, "overrides")
	if len(inline) > 0 {
		service, err = cmdutil.Merge(service, inline, "Service")
		if err != nil {
			return err
		}
	}

	// TODO: extract this flag to a central location, when such a location exists.
	if !cmdutil.GetFlagBool(cmd, "dry-run") {
		service, err = client.Services(namespace).Create(service.(*api.Service))
		if err != nil {
			return err
		}
	}

	return f.PrintObject(cmd, service, out)
}