| // Copyright 2018 The gVisor 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 log |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| "time" |
| ) |
| |
| type k8sJSONLog struct { |
| Log string `json:"log"` |
| Level Level `json:"level"` |
| Time time.Time `json:"time"` |
| } |
| |
| // K8sJSONEmitter logs messages in json format that is compatible with |
| // Kubernetes fluent configuration. |
| type K8sJSONEmitter struct { |
| *Writer |
| } |
| |
| // Emit implements Emitter.Emit. |
| func (e K8sJSONEmitter) Emit(_ int, level Level, timestamp time.Time, format string, v ...interface{}) { |
| j := k8sJSONLog{ |
| Log: fmt.Sprintf(format, v...), |
| Level: level, |
| Time: timestamp, |
| } |
| b, err := json.Marshal(j) |
| if err != nil { |
| panic(err) |
| } |
| e.Writer.Write(b) |
| } |