cmd

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 Go to latest Published: Feb 21, 2015 License: Apache-2.0 Imports: 28 Imported by: 0

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Index

Constants

View Source 
const (
	FlagMatchBinaryVersion = "match-server-version"
)

Variables

This section is empty.

Functions

func AddPrinterFlags 

func AddPrinterFlags(cmd *cobra.Command)

func ClientMapperForCommand 

func ClientMapperForCommand(cmd *cobra.Command, f *Factory) resource.ClientMapper

ClientMapperForCommand returns a ClientMapper for the given command and factory.

func CompareNamespace 

func CompareNamespace(defaultNamespace, namespace string) error

CompareNamespace returns an error if the namespace the user has provided on the CLI or via the default namespace file does not match the namespace of an input file. This prevents a user from unintentionally updating the wrong namespace.

func DefaultClientConfig 

func DefaultClientConfig(flags *pflag.FlagSet) clientcmd.ClientConfig

DefaultClientConfig creates a clientcmd.ClientConfig with the following hierarchy:

  1. Use the kubeconfig builder. The number of merges and overrides here gets a little crazy. Stay with me.
  2. Merge together the kubeconfig itself. This is done with the following hierarchy and merge rules:
  3. CommandLineLocation - this parsed from the command line, so it must be late bound
  4. EnvVarLocation
  5. CurrentDirectoryLocation
  6. HomeDirectoryLocation Empty filenames are ignored. Files with non-deserializable content produced errors. The first file to set a particular value or map key wins and the value or map key is never changed. This means that the first file to set CurrentContext will have its context preserved. It also means that if two files specify a "red-user", only values from the first file's red-user are used. Even non-conflicting entries from the second file's "red-user" are discarded.
  7. Determine the context to use based on the first hit in this chain
  8. command line argument - again, parsed from the command line, so it must be late bound
  9. CurrentContext from the merged kubeconfig file
  10. Empty is allowed at this stage
  11. Determine the cluster info and auth info to use. At this point, we may or may not have a context. They are built based on the first hit in this chain. (run it twice, once for auth, once for cluster)
  12. command line argument
  13. If context is present, then use the context value
  14. Empty is allowed
  15. Determine the actual cluster info to use. At this point, we may or may not have a cluster info. Build each piece of the cluster info based on the chain:
  16. command line argument
  17. If cluster info is present and a value for the attribute is present, use it.
  18. If you don't have a server location, bail.
  19. Auth info is build using the same rules as cluster info, EXCEPT that you can only have one authentication technique per auth info. The following conditions result in an error:
  20. If there are two conflicting techniques specified from the command line, fail.
  21. If the command line does not specify one, and the auth info has conflicting techniques, fail.
  22. If the command line specifies one and the auth info specifies another, honor the command line technique.
  23. Use default values and potentially prompt for auth information

func FirstNonEmptyString 

func FirstNonEmptyString(args ...string) string

Returns the first non-empty string out of the ones provided. If all strings are empty, returns an empty string.

func GetFilesFromDir 

func GetFilesFromDir(directory string, fileType string) []string

Return a list of file names of a certain type within a given directory. TODO: replace with resource.Builder

func GetFlagBool 

func GetFlagBool(cmd *cobra.Command, flag string) bool

func GetFlagBoolPtr 

func GetFlagBoolPtr(cmd *cobra.Command, flag string) *bool

Returns nil if the flag wasn't set.

func GetFlagDuration 

func GetFlagDuration(cmd *cobra.Command, flag string) time.Duration

func GetFlagInt 

func GetFlagInt(cmd *cobra.Command, flag string) int

Assumes the flag has a default value.

func GetFlagString 

func GetFlagString(cmd *cobra.Command, flag string) string

func Merge 

func Merge(dst runtime.Object, fragment, kind string) error

func NewCmdNamespace 

func NewCmdNamespace(out io.Writer) *cobra.Command

func PrintObject 

func PrintObject(cmd *cobra.Command, obj runtime.Object, f *Factory, out io.Writer) error

PrintObject prints an api object given command line flags to modify the output format

func PrinterForCommand 

func PrinterForCommand(cmd *cobra.Command) (kubectl.ResourcePrinter, bool, error)

PrinterForCommand returns the default printer for this command. Requires that printer flags have been added to cmd (see AddPrinterFlags).

func PrinterForMapping 

func PrinterForMapping(f *Factory, cmd *cobra.Command, mapping *meta.RESTMapping) (kubectl.ResourcePrinter, error)

PrinterForMapping returns a printer suitable for displaying the provided resource type. Requires that printer flags have been added to cmd (see AddPrinterFlags).

func ReadConfigData 

func ReadConfigData(location string) ([]byte, error)

ReadConfigData reads the bytes from the specified filesytem or network location or from stdin if location == "-". TODO: replace with resource.Builder

func ReadConfigDataFromLocation 

func ReadConfigDataFromLocation(location string) ([]byte, error)

TODO: replace with resource.Builder

func ResourceFromArgs 

func ResourceFromArgs(cmd *cobra.Command, args []string, mapper meta.RESTMapper, cmdNamespace string) (mapping *meta.RESTMapping, namespace, name string)

ResourceFromArgs expects two arguments with a given type, and extracts the fields necessary to uniquely locate a resource. Displays a usageError if that contract is not satisfied, or a generic error if any other problems occur.

func ResourceFromArgsOrFile 

func ResourceFromArgsOrFile(cmd *cobra.Command, args []string, filename string, typer runtime.ObjectTyper, mapper meta.RESTMapper, schema validation.Schema, cmdNamespace, cmdVersion string) (mapping *meta.RESTMapping, namespace, name string)

ResourceFromArgsOrFile expects two arguments or a valid file with a given type, and extracts the fields necessary to uniquely locate a resource. Displays a usageError if that contract is not satisfied, or a generic error if any other problems occur.

func ResourceFromFile 

func ResourceFromFile(filename string, typer runtime.ObjectTyper, mapper meta.RESTMapper, schema validation.Schema, cmdVersion string) (mapping *meta.RESTMapping, namespace, name string, data []byte)

ResourceFromFile retrieves the name and namespace from a valid file. If the file does not resolve to a known type an error is returned. The returned mapping can be used to determine the correct REST endpoint to modify this resource with.

func ResourceOrTypeFromArgs 

func ResourceOrTypeFromArgs(cmd *cobra.Command, args []string, mapper meta.RESTMapper, cmdNamespace, cmdVersion string) (mapping *meta.RESTMapping, namespace, name string)

ResourceFromArgs expects two arguments with a given type, and extracts the fields necessary to uniquely locate a resource. Displays a usageError if that contract is not satisfied, or a generic error if any other problems occur.

func ResourcesFromArgsOrFile 

func ResourcesFromArgsOrFile(
	cmd *cobra.Command,
	args []string,
	filename, selector string,
	typer runtime.ObjectTyper,
	mapper meta.RESTMapper,
	clientBuilder func(cmd *cobra.Command, mapping *meta.RESTMapping) (resource.RESTClient, error),
	schema validation.Schema,
	requireNames bool,
	cmdNamespace,
	cmdVersion string,
) resource.Visitor

ResourcesFromArgsOrFile computes a list of Resources by extracting info from filename or args. It will handle label selectors provided.

func RunGet 

func RunGet(f *Factory, out io.Writer, cmd *cobra.Command, args []string)

RunGet implements the generic Get command TODO: convert all direct flag accessors to a struct and pass that instead of cmd TODO: return an error instead of using glog.Fatal and checkErr

func SplitResourceArgument 

func SplitResourceArgument(arg string) []string

Types

type Factory 

type Factory struct {

	// Returns interfaces for dealing with arbitrary runtime.Objects.
	Object func(cmd *cobra.Command) (meta.RESTMapper, runtime.ObjectTyper)
	// Returns a client for accessing Kubernetes resources or an error.
	Client func(cmd *cobra.Command) (*client.Client, error)
	// Returns a client.Config for accessing the Kubernetes server.
	ClientConfig func(cmd *cobra.Command) (*client.Config, error)
	// Returns a RESTClient for working with the specified RESTMapping or an error. This is intended
	// for working with arbitrary resources and is not guaranteed to point to a Kubernetes APIServer.
	RESTClient func(cmd *cobra.Command, mapping *meta.RESTMapping) (resource.RESTClient, error)
	// Returns a Describer for displaying the specified RESTMapping type or an error.
	Describer func(cmd *cobra.Command, mapping *meta.RESTMapping) (kubectl.Describer, error)
	// Returns a Printer for formatting objects of the given type or an error.
	Printer func(cmd *cobra.Command, mapping *meta.RESTMapping, noHeaders bool) (kubectl.ResourcePrinter, error)
	// Returns a Resizer for changing the size of the specified RESTMapping type or an error
	Resizer func(cmd *cobra.Command, mapping *meta.RESTMapping) (kubectl.Resizer, error)
	// Returns a Reaper for gracefully shutting down resources.
	Reaper func(cmd *cobra.Command, mapping *meta.RESTMapping) (kubectl.Reaper, error)
	// Returns a schema that can validate objects stored on disk.
	Validator func(*cobra.Command) (validation.Schema, error)
	// Returns the default namespace to use in cases where no other namespace is specified
	DefaultNamespace func(cmd *cobra.Command) (string, error)
	// contains filtered or unexported fields
}

Factory provides abstractions that allow the Kubectl command to be extended across multiple types of resources and different API sets. TODO: make the functions interfaces

func NewFactory 

func NewFactory() *Factory

NewFactory creates a factory with the default Kubernetes resources defined

func (*Factory) BindFlags 

func (f *Factory) BindFlags(flags *pflag.FlagSet)

BindFlags adds any flags that are common to all kubectl sub commands.

func (*Factory) NewCmdCreate 

func (f *Factory) NewCmdCreate(out io.Writer) *cobra.Command

func (*Factory) NewCmdDelete 

func (f *Factory) NewCmdDelete(out io.Writer) *cobra.Command

func (*Factory) NewCmdDescribe 

func (f *Factory) NewCmdDescribe(out io.Writer) *cobra.Command

func (*Factory) NewCmdGet 

func (f *Factory) NewCmdGet(out io.Writer) *cobra.Command

NewCmdGet creates a command object for the generic "get" action, which retrieves one or more resources from a server.

func (*Factory) NewCmdLog 

func (f *Factory) NewCmdLog(out io.Writer) *cobra.Command

func (*Factory) NewCmdProxy 

func (f *Factory) NewCmdProxy(out io.Writer) *cobra.Command

func (*Factory) NewCmdResize 

func (f *Factory) NewCmdResize(out io.Writer) *cobra.Command

func (*Factory) NewCmdRollingUpdate 

func (f *Factory) NewCmdRollingUpdate(out io.Writer) *cobra.Command

func (*Factory) NewCmdRunContainer 

func (f *Factory) NewCmdRunContainer(out io.Writer) *cobra.Command

func (*Factory) NewCmdStop 

func (f *Factory) NewCmdStop(out io.Writer) *cobra.Command

func (*Factory) NewCmdUpdate 

func (f *Factory) NewCmdUpdate(out io.Writer) *cobra.Command

func (*Factory) NewCmdVersion 

func (f *Factory) NewCmdVersion(out io.Writer) *cobra.Command

func (*Factory) NewKubectlCommand 

func (f *Factory) NewKubectlCommand(out io.Writer) *cobra.Command

NewKubectlCommand creates the `kubectl` command and its nested children.

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