caddy/modules/caddyhttp/invoke.go

57 lines
1.6 KiB
Go

// Copyright 2015 Matthew Holt and The Caddy Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package caddyhttp
import (
"fmt"
"net/http"
"github.com/caddyserver/caddy/v2"
)
func init() {
caddy.RegisterModule(Invoke{})
}
// Invoke implements a handler that compiles and executes a
// named route that was defined on the server.
//
// EXPERIMENTAL: Subject to change or removal.
type Invoke struct {
// Name is the key of the named route to execute
Name string `json:"name,omitempty"`
}
// CaddyModule returns the Caddy module information.
func (Invoke) CaddyModule() caddy.ModuleInfo {
return caddy.ModuleInfo{
ID: "http.handlers.invoke",
New: func() caddy.Module { return new(Invoke) },
}
}
func (invoke *Invoke) ServeHTTP(w http.ResponseWriter, r *http.Request, next Handler) error {
server := r.Context().Value(ServerCtxKey).(*Server)
if route, ok := server.NamedRoutes[invoke.Name]; ok {
return route.Compile(next).ServeHTTP(w, r)
}
return fmt.Errorf("invoke: route '%s' not found", invoke.Name)
}
// Interface guards
var (
_ MiddlewareHandler = (*Invoke)(nil)
)