mirror of
https://github.com/go-gitea/gitea
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176 lines
5.0 KiB
Go
176 lines
5.0 KiB
Go
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// Copyright (c) 2016 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package zapcore
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import (
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"bytes"
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"errors"
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"fmt"
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)
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var errUnmarshalNilLevel = errors.New("can't unmarshal a nil *Level")
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// A Level is a logging priority. Higher levels are more important.
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type Level int8
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const (
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// DebugLevel logs are typically voluminous, and are usually disabled in
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// production.
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DebugLevel Level = iota - 1
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// InfoLevel is the default logging priority.
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InfoLevel
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// WarnLevel logs are more important than Info, but don't need individual
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// human review.
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WarnLevel
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// ErrorLevel logs are high-priority. If an application is running smoothly,
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// it shouldn't generate any error-level logs.
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ErrorLevel
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// DPanicLevel logs are particularly important errors. In development the
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// logger panics after writing the message.
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DPanicLevel
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// PanicLevel logs a message, then panics.
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PanicLevel
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// FatalLevel logs a message, then calls os.Exit(1).
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FatalLevel
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_minLevel = DebugLevel
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_maxLevel = FatalLevel
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)
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// String returns a lower-case ASCII representation of the log level.
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func (l Level) String() string {
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switch l {
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case DebugLevel:
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return "debug"
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case InfoLevel:
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return "info"
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case WarnLevel:
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return "warn"
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case ErrorLevel:
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return "error"
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case DPanicLevel:
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return "dpanic"
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case PanicLevel:
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return "panic"
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case FatalLevel:
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return "fatal"
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default:
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return fmt.Sprintf("Level(%d)", l)
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}
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}
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// CapitalString returns an all-caps ASCII representation of the log level.
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func (l Level) CapitalString() string {
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// Printing levels in all-caps is common enough that we should export this
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// functionality.
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switch l {
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case DebugLevel:
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return "DEBUG"
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case InfoLevel:
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return "INFO"
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case WarnLevel:
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return "WARN"
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case ErrorLevel:
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return "ERROR"
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case DPanicLevel:
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return "DPANIC"
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case PanicLevel:
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return "PANIC"
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case FatalLevel:
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return "FATAL"
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default:
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return fmt.Sprintf("LEVEL(%d)", l)
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}
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}
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// MarshalText marshals the Level to text. Note that the text representation
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// drops the -Level suffix (see example).
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func (l Level) MarshalText() ([]byte, error) {
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return []byte(l.String()), nil
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}
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// UnmarshalText unmarshals text to a level. Like MarshalText, UnmarshalText
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// expects the text representation of a Level to drop the -Level suffix (see
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// example).
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//
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// In particular, this makes it easy to configure logging levels using YAML,
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// TOML, or JSON files.
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func (l *Level) UnmarshalText(text []byte) error {
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if l == nil {
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return errUnmarshalNilLevel
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}
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if !l.unmarshalText(text) && !l.unmarshalText(bytes.ToLower(text)) {
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return fmt.Errorf("unrecognized level: %q", text)
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}
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return nil
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}
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func (l *Level) unmarshalText(text []byte) bool {
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switch string(text) {
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case "debug", "DEBUG":
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*l = DebugLevel
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case "info", "INFO", "": // make the zero value useful
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*l = InfoLevel
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case "warn", "WARN":
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*l = WarnLevel
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case "error", "ERROR":
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*l = ErrorLevel
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case "dpanic", "DPANIC":
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*l = DPanicLevel
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case "panic", "PANIC":
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*l = PanicLevel
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case "fatal", "FATAL":
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*l = FatalLevel
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default:
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return false
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}
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return true
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}
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// Set sets the level for the flag.Value interface.
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func (l *Level) Set(s string) error {
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return l.UnmarshalText([]byte(s))
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}
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// Get gets the level for the flag.Getter interface.
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func (l *Level) Get() interface{} {
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return *l
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}
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// Enabled returns true if the given level is at or above this level.
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func (l Level) Enabled(lvl Level) bool {
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return lvl >= l
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}
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// LevelEnabler decides whether a given logging level is enabled when logging a
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// message.
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//
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// Enablers are intended to be used to implement deterministic filters;
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// concerns like sampling are better implemented as a Core.
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//
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// Each concrete Level value implements a static LevelEnabler which returns
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// true for itself and all higher logging levels. For example WarnLevel.Enabled()
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// will return true for WarnLevel, ErrorLevel, DPanicLevel, PanicLevel, and
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// FatalLevel, but return false for InfoLevel and DebugLevel.
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type LevelEnabler interface {
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Enabled(Level) bool
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}
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