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const (
	// ImpersonateUserHeader is used to impersonate a particular user during an API server request
	ImpersonateUserHeader = "Impersonate-User"

	// ImpersonateGroupHeader is used to impersonate a particular group during an API server request.
	// It can be repeated multiplied times for multiple groups.
	ImpersonateGroupHeader = "Impersonate-Group"

	// ImpersonateUserExtraHeaderPrefix is a prefix for a header used to impersonate an entry in the
	// extra map[string][]string for user.Info.  The key for the `extra` map is suffix.
	// The same key can be repeated multiple times to have multiple elements in the slice under a single key.
	// For instance:
	// Impersonate-Extra-Foo: one
	// Impersonate-Extra-Foo: two
	// results in extra["Foo"] = []string{"one", "two"}
	ImpersonateUserExtraHeaderPrefix = "Impersonate-Extra-"

    These correspond to the headers used in pkg/apis/authentication. We don't want the package dependency, but you must not change the values.


    This section is empty.


    func DebugWrappers

    func DebugWrappers(rt http.RoundTripper) http.RoundTripper

      DebugWrappers wraps a round tripper and logs based on the current log level.

      func HTTPWrappersForConfig

      func HTTPWrappersForConfig(config *Config, rt http.RoundTripper) (http.RoundTripper, error)

        HTTPWrappersForConfig wraps a round tripper with any relevant layered behavior from the config. Exposed to allow more clients that need HTTP-like behavior but then must hijack the underlying connection (like WebSocket or HTTP2 clients). Pure HTTP clients should use the RoundTripper returned from New.

        func New

        func New(config *Config) (http.RoundTripper, error)

          New returns an http.RoundTripper that will provide the authentication or transport level security defined by the provided Config.

          func NewAuthProxyRoundTripper

          func NewAuthProxyRoundTripper(username string, groups []string, extra map[string][]string, rt http.RoundTripper) http.RoundTripper

            NewAuthProxyRoundTripper provides a roundtripper which will add auth proxy fields to requests for authentication terminating proxy cases assuming you pull the user from the context: username is the user.Info.GetName() of the user groups is the user.Info.GetGroups() of the user extra is the user.Info.GetExtra() of the user extra can contain any additional information that the authenticator thought was interesting, for example authorization scopes. In order to faithfully round-trip through an impersonation flow, these keys MUST be lowercase.

            func NewBasicAuthRoundTripper

            func NewBasicAuthRoundTripper(username, password string, rt http.RoundTripper) http.RoundTripper

              NewBasicAuthRoundTripper will apply a BASIC auth authorization header to a request unless it has already been set.

              func NewBearerAuthRoundTripper

              func NewBearerAuthRoundTripper(bearer string, rt http.RoundTripper) http.RoundTripper

                NewBearerAuthRoundTripper adds the provided bearer token to a request unless the authorization header has already been set.

                func NewBearerAuthWithRefreshRoundTripper

                func NewBearerAuthWithRefreshRoundTripper(bearer string, tokenFile string, rt http.RoundTripper) (http.RoundTripper, error)

                  NewBearerAuthRoundTripper adds the provided bearer token to a request unless the authorization header has already been set. If tokenFile is non-empty, it is periodically read, and the last successfully read content is used as the bearer token. If tokenFile is non-empty and bearer is empty, the tokenFile is read immediately to populate the initial bearer token.

                  func NewCachedFileTokenSource

                  func NewCachedFileTokenSource(path string) oauth2.TokenSource

                    NewCachedFileTokenSource returns a oauth2.TokenSource reads a token from a file at a specified path and periodically reloads it.

                    func NewCachedTokenSource

                    func NewCachedTokenSource(ts oauth2.TokenSource) oauth2.TokenSource

                      NewCachedTokenSource returns a oauth2.TokenSource reads a token from a designed TokenSource. The ts would provide the source of token.

                      func NewImpersonatingRoundTripper

                      func NewImpersonatingRoundTripper(impersonate ImpersonationConfig, delegate http.RoundTripper) http.RoundTripper

                        NewImpersonatingRoundTripper will add an Act-As header to a request unless it has already been set.

                        func NewUserAgentRoundTripper

                        func NewUserAgentRoundTripper(agent string, rt http.RoundTripper) http.RoundTripper

                        func SetAuthProxyHeaders

                        func SetAuthProxyHeaders(req *http.Request, username string, groups []string, extra map[string][]string)

                          SetAuthProxyHeaders stomps the auth proxy header fields. It mutates its argument.

                          func TLSConfigFor

                          func TLSConfigFor(c *Config) (*tls.Config, error)

                            TLSConfigFor returns a tls.Config that will provide the transport level security defined by the provided Config. Will return nil if no transport level security is requested.

                            func TokenSourceWrapTransport

                            func TokenSourceWrapTransport(ts oauth2.TokenSource) func(http.RoundTripper) http.RoundTripper

                              TokenSourceWrapTransport returns a WrapTransport that injects bearer tokens authentication from an oauth2.TokenSource.


                              type Config

                              type Config struct {
                              	// UserAgent is an optional field that specifies the caller of this
                              	// request.
                              	UserAgent string
                              	// The base TLS configuration for this transport.
                              	TLS TLSConfig
                              	// Username and password for basic authentication
                              	Username string
                              	Password string
                              	// Bearer token for authentication
                              	BearerToken string
                              	// Path to a file containing a BearerToken.
                              	// If set, the contents are periodically read.
                              	// The last successfully read value takes precedence over BearerToken.
                              	BearerTokenFile string
                              	// Impersonate is the config that this Config will impersonate using
                              	Impersonate ImpersonationConfig
                              	// Transport may be used for custom HTTP behavior. This attribute may
                              	// not be specified with the TLS client certificate options. Use
                              	// WrapTransport for most client level operations.
                              	Transport http.RoundTripper
                              	// WrapTransport will be invoked for custom HTTP behavior after the
                              	// underlying transport is initialized (either the transport created
                              	// from TLSClientConfig, Transport, or http.DefaultTransport). The
                              	// config may layer other RoundTrippers on top of the returned
                              	// RoundTripper.
                              	// A future release will change this field to an array. Use config.Wrap()
                              	// instead of setting this value directly.
                              	WrapTransport WrapperFunc
                              	// Dial specifies the dial function for creating unencrypted TCP connections.
                              	Dial func(ctx context.Context, network, address string) (net.Conn, error)

                                Config holds various options for establishing a transport.

                                func (*Config) HasBasicAuth

                                func (c *Config) HasBasicAuth() bool

                                  HasBasicAuth returns whether the configuration has basic authentication or not.

                                  func (*Config) HasCA

                                  func (c *Config) HasCA() bool

                                    HasCA returns whether the configuration has a certificate authority or not.

                                    func (*Config) HasCertAuth

                                    func (c *Config) HasCertAuth() bool

                                      HasCertAuth returns whether the configuration has certificate authentication or not.

                                      func (*Config) HasCertCallback

                                      func (c *Config) HasCertCallback() bool

                                        HasCertCallbacks returns whether the configuration has certificate callback or not.

                                        func (*Config) HasTokenAuth

                                        func (c *Config) HasTokenAuth() bool

                                          HasTokenAuth returns whether the configuration has token authentication or not.

                                          func (*Config) Wrap

                                          func (c *Config) Wrap(fn WrapperFunc)

                                            Wrap adds a transport middleware function that will give the caller an opportunity to wrap the underlying http.RoundTripper prior to the first API call being made. The provided function is invoked after any existing transport wrappers are invoked.

                                            type ImpersonationConfig

                                            type ImpersonationConfig struct {
                                            	// UserName matches user.Info.GetName()
                                            	UserName string
                                            	// Groups matches user.Info.GetGroups()
                                            	Groups []string
                                            	// Extra matches user.Info.GetExtra()
                                            	Extra map[string][]string

                                              ImpersonationConfig has all the available impersonation options

                                              type TLSConfig

                                              type TLSConfig struct {
                                              	CAFile   string // Path of the PEM-encoded server trusted root certificates.
                                              	CertFile string // Path of the PEM-encoded client certificate.
                                              	KeyFile  string // Path of the PEM-encoded client key.
                                              	Insecure   bool   // Server should be accessed without verifying the certificate. For testing only.
                                              	ServerName string // Override for the server name passed to the server for SNI and used to verify certificates.
                                              	CAData   []byte // Bytes of the PEM-encoded server trusted root certificates. Supercedes CAFile.
                                              	CertData []byte // Bytes of the PEM-encoded client certificate. Supercedes CertFile.
                                              	KeyData  []byte // Bytes of the PEM-encoded client key. Supercedes KeyFile.
                                              	GetCert func() (*tls.Certificate, error) // Callback that returns a TLS client certificate. CertData, CertFile, KeyData and KeyFile supercede this field.

                                                TLSConfig holds the information needed to set up a TLS transport.

                                                type WrapperFunc

                                                type WrapperFunc func(rt http.RoundTripper) http.RoundTripper

                                                  WrapperFunc wraps an http.RoundTripper when a new transport is created for a client, allowing per connection behavior to be injected.

                                                  func ContextCanceller

                                                  func ContextCanceller(ctx context.Context, err error) WrapperFunc

                                                    ContextCanceller prevents new requests after the provided context is finished. err is returned when the context is closed, allowing the caller to provide a context appropriate error.

                                                    func Wrappers

                                                    func Wrappers(fns ...WrapperFunc) WrapperFunc

                                                      Wrappers accepts any number of wrappers and returns a wrapper function that is the equivalent of calling each of them in order. Nil values are ignored, which makes this function convenient for incrementally wrapping a function.


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