forked from mystiq/dex
82 lines
2.4 KiB
Go
82 lines
2.4 KiB
Go
|
// Copyright (c) 2016 Uber Technologies, Inc.
|
||
|
|
//
|
||
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
|
// of this software and associated documentation files (the "Software"), to deal
|
||
|
|
// in the Software without restriction, including without limitation the rights
|
||
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
|
// copies of the Software, and to permit persons to whom the Software is
|
||
|
|
// furnished to do so, subject to the following conditions:
|
||
|
|
//
|
||
|
|
// The above copyright notice and this permission notice shall be included in
|
||
|
|
// all copies or substantial portions of the Software.
|
||
|
|
//
|
||
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||
|
|
// THE SOFTWARE.
|
||
|
|
|
||
|
|
package zap
|
||
|
|
|
||
|
|
import (
|
||
|
|
"encoding/json"
|
||
|
|
"fmt"
|
||
|
|
"net/http"
|
||
|
|
|
||
|
|
"go.uber.org/zap/zapcore"
|
||
|
|
)
|
||
|
|
|
||
|
|
// ServeHTTP is a simple JSON endpoint that can report on or change the current
|
||
|
|
// logging level.
|
||
|
|
//
|
||
|
|
// GET requests return a JSON description of the current logging level. PUT
|
||
|
|
// requests change the logging level and expect a payload like:
|
||
|
|
// {"level":"info"}
|
||
|
|
//
|
||
|
|
// It's perfectly safe to change the logging level while a program is running.
|
||
|
|
func (lvl AtomicLevel) ServeHTTP(w http.ResponseWriter, r *http.Request) {
|
||
|
|
type errorResponse struct {
|
||
|
|
Error string `json:"error"`
|
||
|
|
}
|
||
|
|
type payload struct {
|
||
|
|
Level *zapcore.Level `json:"level"`
|
||
|
|
}
|
||
|
|
|
||
|
|
enc := json.NewEncoder(w)
|
||
|
|
|
||
|
|
switch r.Method {
|
||
|
|
|
||
|
|
case http.MethodGet:
|
||
|
|
current := lvl.Level()
|
||
|
|
enc.Encode(payload{Level: ¤t})
|
||
|
|
|
||
|
|
case http.MethodPut:
|
||
|
|
var req payload
|
||
|
|
|
||
|
|
if errmess := func() string {
|
||
|
|
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
|
||
|
|
return fmt.Sprintf("Request body must be well-formed JSON: %v", err)
|
||
|
|
}
|
||
|
|
if req.Level == nil {
|
||
|
|
return "Must specify a logging level."
|
||
|
|
}
|
||
|
|
return ""
|
||
|
|
}(); errmess != "" {
|
||
|
|
w.WriteHeader(http.StatusBadRequest)
|
||
|
|
enc.Encode(errorResponse{Error: errmess})
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
lvl.SetLevel(*req.Level)
|
||
|
|
enc.Encode(req)
|
||
|
|
|
||
|
|
default:
|
||
|
|
w.WriteHeader(http.StatusMethodNotAllowed)
|
||
|
|
enc.Encode(errorResponse{
|
||
|
|
Error: "Only GET and PUT are supported.",
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|