mirror of
https://github.com/restic/restic.git
synced 2024-08-20 11:23:24 +02:00
Among others, this updates minio-go, so that the new "eu-west-3" zone for AWS is supported.
179 lines
4.0 KiB
Go
179 lines
4.0 KiB
Go
package logrus
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import (
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"bytes"
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"fmt"
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"sort"
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"strings"
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"sync"
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"time"
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)
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const (
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nocolor = 0
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red = 31
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green = 32
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yellow = 33
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blue = 36
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gray = 37
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)
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var (
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baseTimestamp time.Time
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)
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func init() {
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baseTimestamp = time.Now()
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}
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// TextFormatter formats logs into text
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type TextFormatter struct {
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// Set to true to bypass checking for a TTY before outputting colors.
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ForceColors bool
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// Force disabling colors.
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DisableColors bool
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// Disable timestamp logging. useful when output is redirected to logging
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// system that already adds timestamps.
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DisableTimestamp bool
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// Enable logging the full timestamp when a TTY is attached instead of just
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// the time passed since beginning of execution.
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FullTimestamp bool
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// TimestampFormat to use for display when a full timestamp is printed
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TimestampFormat string
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// The fields are sorted by default for a consistent output. For applications
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// that log extremely frequently and don't use the JSON formatter this may not
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// be desired.
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DisableSorting bool
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// QuoteEmptyFields will wrap empty fields in quotes if true
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QuoteEmptyFields bool
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// Whether the logger's out is to a terminal
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isTerminal bool
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sync.Once
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}
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func (f *TextFormatter) init(entry *Entry) {
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if entry.Logger != nil {
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f.isTerminal = checkIfTerminal(entry.Logger.Out)
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}
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}
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// Format renders a single log entry
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func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
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var b *bytes.Buffer
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keys := make([]string, 0, len(entry.Data))
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for k := range entry.Data {
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keys = append(keys, k)
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}
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if !f.DisableSorting {
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sort.Strings(keys)
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}
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if entry.Buffer != nil {
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b = entry.Buffer
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} else {
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b = &bytes.Buffer{}
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}
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prefixFieldClashes(entry.Data)
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f.Do(func() { f.init(entry) })
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isColored := (f.ForceColors || f.isTerminal) && !f.DisableColors
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timestampFormat := f.TimestampFormat
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if timestampFormat == "" {
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timestampFormat = defaultTimestampFormat
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}
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if isColored {
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f.printColored(b, entry, keys, timestampFormat)
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} else {
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if !f.DisableTimestamp {
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f.appendKeyValue(b, "time", entry.Time.Format(timestampFormat))
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}
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f.appendKeyValue(b, "level", entry.Level.String())
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if entry.Message != "" {
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f.appendKeyValue(b, "msg", entry.Message)
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}
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for _, key := range keys {
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f.appendKeyValue(b, key, entry.Data[key])
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}
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}
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b.WriteByte('\n')
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return b.Bytes(), nil
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}
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func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []string, timestampFormat string) {
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var levelColor int
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switch entry.Level {
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case DebugLevel:
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levelColor = gray
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case WarnLevel:
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levelColor = yellow
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case ErrorLevel, FatalLevel, PanicLevel:
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levelColor = red
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default:
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levelColor = blue
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}
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levelText := strings.ToUpper(entry.Level.String())[0:4]
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if f.DisableTimestamp {
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fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m %-44s ", levelColor, levelText, entry.Message)
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} else if !f.FullTimestamp {
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fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%04d] %-44s ", levelColor, levelText, int(entry.Time.Sub(baseTimestamp)/time.Second), entry.Message)
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} else {
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fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%s] %-44s ", levelColor, levelText, entry.Time.Format(timestampFormat), entry.Message)
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}
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for _, k := range keys {
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v := entry.Data[k]
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fmt.Fprintf(b, " \x1b[%dm%s\x1b[0m=", levelColor, k)
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f.appendValue(b, v)
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}
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}
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func (f *TextFormatter) needsQuoting(text string) bool {
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if f.QuoteEmptyFields && len(text) == 0 {
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return true
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}
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for _, ch := range text {
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if !((ch >= 'a' && ch <= 'z') ||
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(ch >= 'A' && ch <= 'Z') ||
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(ch >= '0' && ch <= '9') ||
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ch == '-' || ch == '.' || ch == '_' || ch == '/' || ch == '@' || ch == '^' || ch == '+') {
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return true
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}
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}
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return false
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}
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func (f *TextFormatter) appendKeyValue(b *bytes.Buffer, key string, value interface{}) {
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if b.Len() > 0 {
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b.WriteByte(' ')
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}
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b.WriteString(key)
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b.WriteByte('=')
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f.appendValue(b, value)
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}
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func (f *TextFormatter) appendValue(b *bytes.Buffer, value interface{}) {
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stringVal, ok := value.(string)
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if !ok {
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stringVal = fmt.Sprint(value)
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}
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if !f.needsQuoting(stringVal) {
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b.WriteString(stringVal)
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} else {
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b.WriteString(fmt.Sprintf("%q", stringVal))
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}
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}
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