75 lines
1.6 KiB
Go
75 lines
1.6 KiB
Go
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package route
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import (
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"fmt"
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"net/http"
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)
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// Mux implements router compatible with http.Handler
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type Mux struct {
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// NotFound sets handler for routes that are not found
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notFound http.Handler
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router Router
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}
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// NewMux returns new Mux router
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func NewMux() *Mux {
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return &Mux{
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router: New(),
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notFound: ¬Found{},
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}
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}
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// Handle adds http handler for route expression
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func (m *Mux) Handle(expr string, handler http.Handler) error {
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return m.router.UpsertRoute(expr, handler)
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}
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// Handle adds http handler function for route expression
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func (m *Mux) HandleFunc(expr string, handler func(http.ResponseWriter, *http.Request)) error {
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return m.Handle(expr, http.HandlerFunc(handler))
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}
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func (m *Mux) Remove(expr string) error {
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return m.router.RemoveRoute(expr)
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}
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// ServeHTTP routes the request and passes it to handler
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func (m *Mux) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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h, err := m.router.Route(r)
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if err != nil || h == nil {
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m.notFound.ServeHTTP(w, r)
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return
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}
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h.(http.Handler).ServeHTTP(w, r)
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}
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func (m *Mux) SetNotFound(n http.Handler) error {
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if n == nil {
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return fmt.Errorf("Not Found handler cannot be nil. Operation rejected.")
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}
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m.notFound = n
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return nil
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}
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func (m *Mux) GetNotFound() http.Handler {
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return m.notFound
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}
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func (m *Mux) IsValid(expr string) bool {
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return IsValid(expr)
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}
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// NotFound is a generic http.Handler for request
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type notFound struct {
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}
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// ServeHTTP returns a simple 404 Not found response
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func (notFound) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "text/plain")
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w.WriteHeader(http.StatusNotFound)
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fmt.Fprint(w, "Not found")
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}
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