handler

Documentation

Index

• Constants
• func Watch(h *Handler, events <-chan gateway.Event)
• type Handler
  • func New(l *zap.Logger, resolver Resolver) *Handler
  • func (h *Handler) Apply(specs []gateway.Spec)
  • func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request)
• type Resolver

Constants

const (
	HeaderContentID = "X-Content-Id"
	HeaderMimeType  = "X-Mime-Type"
	HeaderErrorCode = "X-Error-Code"
)

Functions

func Watch

func Watch(h *Handler, events <-chan gateway.Event)

Watch ranges over gateway events, maintains the full spec collection, and calls Apply on each change. It returns when the events channel is closed. Run it in a goroutine.

Types

type Handler

type Handler struct {
	// contains filtered or unexported fields
}

Handler routes HTTP requests to registered frontend services based on mime-type resolution.

func New

func New(l *zap.Logger, resolver Resolver) *Handler

New creates a Handler backed by the given Resolver.

func (*Handler) Apply

func (h *Handler) Apply(specs []gateway.Spec)

Apply rebuilds routing state from the given specs atomically.

func (*Handler) ServeHTTP

func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request)

type Resolver

type Resolver interface {
	Resolve(r *http.Request) (mimeType, contentID string, err error)
}

Resolver resolves an incoming request to a mime type and content ID. Return empty mimeType (with no error) when the content does not exist or is not accessible.