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							69 lines
						
					
					
						
							2.2 KiB
						
					
					
				| // 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" | |
| 	"strconv" | |
| 
 | |
| 	"github.com/caddyserver/caddy/v2" | |
| ) | |
| 
 | |
| func init() { | |
| 	caddy.RegisterModule(StaticError{}) | |
| } | |
| 
 | |
| // StaticError implements a simple handler that returns an error. | |
| // This handler returns an error value, but does not write a response. | |
| // This is useful when you want the server to act as if an error | |
| // occurred; for example, to invoke your custom error handling logic. | |
| // | |
| // Since this handler does not write a response, the error information | |
| // is for use by the server to know how to handle the error. | |
| type StaticError struct { | |
| 	// The error message. Optional. Default is no error message. | |
| 	Error string `json:"error,omitempty"` | |
| 
 | |
| 	// The recommended HTTP status code. Can be either an integer or a | |
| 	// string if placeholders are needed. Optional. Default is 500. | |
| 	StatusCode WeakString `json:"status_code,omitempty"` | |
| } | |
| 
 | |
| // CaddyModule returns the Caddy module information. | |
| func (StaticError) CaddyModule() caddy.ModuleInfo { | |
| 	return caddy.ModuleInfo{ | |
| 		ID:  "http.handlers.error", | |
| 		New: func() caddy.Module { return new(StaticError) }, | |
| 	} | |
| } | |
| 
 | |
| func (e StaticError) ServeHTTP(w http.ResponseWriter, r *http.Request, _ Handler) error { | |
| 	repl := r.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer) | |
| 
 | |
| 	statusCode := http.StatusInternalServerError | |
| 	if codeStr := e.StatusCode.String(); codeStr != "" { | |
| 		intVal, err := strconv.Atoi(repl.ReplaceAll(codeStr, "")) | |
| 		if err != nil { | |
| 			return Error(http.StatusInternalServerError, err) | |
| 		} | |
| 		statusCode = intVal | |
| 	} | |
| 
 | |
| 	return Error(statusCode, fmt.Errorf("%s", e.Error)) | |
| } | |
| 
 | |
| // Interface guard | |
| var _ MiddlewareHandler = (*StaticError)(nil)
 | |
| 
 |