| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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 logger |
| |
| import ( |
| "fmt" |
| "io" |
| "log" |
| "strings" |
| |
| kitlog "github.com/go-kit/kit/log" |
| ) |
| |
| type logTextLogger struct { |
| log *log.Logger |
| } |
| |
| // NewLogTextLogger returns a logger that encodes keyvals to the Writer in |
| // plain text format. |
| // The passed Writer must be safe for concurrent use by multiple goroutines if |
| // the returned Logger will be used concurrently. |
| func NewLogTextLogger(w io.Writer) kitlog.Logger { |
| return &logTextLogger{log.New(w, "", 0)} |
| } |
| |
| func (l logTextLogger) Log(keyvals ...interface{}) error { |
| var out string |
| |
| for i, v := range keyvals { |
| if i%2 == 0 { |
| continue |
| } |
| |
| k := keyvals[i-1] |
| |
| switch k { |
| case "ts", "msg", "method", "path", "statusCode", "statusText", "reqID": |
| out += fmt.Sprintf("%v ", v) |
| case "t": |
| s, ok := v.(string) |
| if ok { |
| out += fmt.Sprintf("[%s] ", strings.ToUpper(s)) |
| } else { |
| out += fmt.Sprintf("%v ", v) |
| } |
| case "time": |
| out += fmt.Sprintf("(%v) ", v) |
| default: |
| out += fmt.Sprintf("%v: %v ", k, v) |
| } |
| } |
| |
| l.log.Println(strings.TrimSpace(out)) |
| return nil |
| } |