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logrus.go
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logrus.go
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// Copyright 2023 The Okteto 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 io
import (
"encoding/json"
"errors"
"strings"
"time"
"github.com/sirupsen/logrus"
)
var (
// errEmptyStage is returned when the stage is empty
errEmptyStage = errors.New("empty stage")
// errEmptyMsg is returned when the message is empty
errEmptyMsg = errors.New("empty message")
)
// logrusJSONFormatter is a logrus formatter that adds a stage field
type logrusJSONFormatter struct {
stage string
}
// newLogrusJSONFormatter creates a new logrusJSONFormatter
func newLogrusJSONFormatter() *logrusJSONFormatter {
return &logrusJSONFormatter{}
}
// SetStage sets the stage
func (f *logrusJSONFormatter) SetStage(stage string) {
f.stage = stage
}
// Format formats the message
func (f *logrusJSONFormatter) Format(entry *logrus.Entry) ([]byte, error) {
level := strings.ToLower(entry.Level.String())
if f.stage == "" {
return nil, errEmptyStage
}
if entry.Message == "" {
return nil, errEmptyMsg
}
outputJSON := &jsonMessage{
Level: level,
Timestamp: time.Now().Unix(),
Stage: f.stage,
Message: entry.Message,
}
messageJSON, err := json.Marshal(outputJSON)
if err != nil {
return nil, err
}
messageJSON = []byte(string(messageJSON) + "\n")
return messageJSON, nil
}