grpc/cli/clifmt/formatter.go

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// Copyright 2023 Linka Cloud All rights reserved.
//
// 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 clifmt
import (
"bytes"
"strings"
"time"
"github.com/fatih/color"
"github.com/sirupsen/logrus"
)
type TimeFormat string
const (
NoneTimeFormat TimeFormat = "none"
FullTimeFormat TimeFormat = "full"
RelativeTimeFormat TimeFormat = "relative"
)
const (
red = 31
yellow = 33
blue = 36
white = 39
gray = 90
)
func New(f TimeFormat) logrus.Formatter {
return &clifmt{start: time.Now(), format: f}
}
type clifmt struct {
start time.Time
format TimeFormat
}
func (f *clifmt) Format(entry *logrus.Entry) ([]byte, error) {
var b bytes.Buffer
var c *color.Color
switch entry.Level {
case logrus.DebugLevel, logrus.TraceLevel:
c = color.New(gray)
case logrus.WarnLevel:
c = color.New(yellow)
case logrus.ErrorLevel, logrus.FatalLevel, logrus.PanicLevel:
c = color.New(red)
default:
c = color.New(white)
}
msg := entry.Message
if len(entry.Message) > 0 && entry.Level < logrus.DebugLevel {
msg = strings.ToTitle(string(msg[0])) + msg[1:]
}
var err error
switch f.format {
case FullTimeFormat:
_, err = c.Fprintf(&b, "[%s] %s\n", entry.Time.Format("2006-01-02 15:04:05"), entry.Message)
case RelativeTimeFormat:
_, err = c.Fprintf(&b, "[%5v] %s\n", entry.Time.Sub(f.start).Truncate(time.Second).String(), msg)
case NoneTimeFormat:
fallthrough
default:
_, err = c.Fprintln(&b, msg)
}
if err != nil {
return nil, err
}
return b.Bytes(), nil
}