92 lines
2.2 KiB
Go
92 lines
2.2 KiB
Go
/*
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* Copyright (C) 2020-2022, IrineSistiana
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*
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* This file is part of mosdns.
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*
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* mosdns is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* mosdns is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package mlog
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import (
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"fmt"
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"go.uber.org/zap"
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"go.uber.org/zap/zapcore"
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"os"
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)
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type LogConfig struct {
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// Level, See also zapcore.ParseLevel.
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Level string `yaml:"level"`
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// File that logger will be writen into.
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// Default is stderr.
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File string `yaml:"file"`
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// Production enables json output.
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Production bool `yaml:"production"`
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}
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var (
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stderr = zapcore.Lock(os.Stderr)
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lvl = zap.NewAtomicLevelAt(zap.InfoLevel)
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l = zap.New(zapcore.NewCore(zapcore.NewConsoleEncoder(zap.NewDevelopmentEncoderConfig()), stderr, lvl))
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s = l.Sugar()
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nop = zap.NewNop()
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)
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func NewLogger(lc LogConfig) (*zap.Logger, error) {
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lvl, err := zapcore.ParseLevel(lc.Level)
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if err != nil {
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return nil, fmt.Errorf("invalid log level: %w", err)
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}
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var out zapcore.WriteSyncer
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if lf := lc.File; len(lf) > 0 {
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f, _, err := zap.Open(lf)
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if err != nil {
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return nil, fmt.Errorf("open log file: %w", err)
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}
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out = zapcore.Lock(f)
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} else {
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out = stderr
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}
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if lc.Production {
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return zap.New(zapcore.NewCore(zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig()), out, lvl)), nil
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}
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return zap.New(zapcore.NewCore(zapcore.NewConsoleEncoder(zap.NewDevelopmentEncoderConfig()), out, lvl)), nil
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}
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// L is a global logger.
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func L() *zap.Logger {
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return l
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}
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// SetLevel sets the log level for the global logger.
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func SetLevel(l zapcore.Level) {
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lvl.SetLevel(l)
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}
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// S is a global logger.
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func S() *zap.SugaredLogger {
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return s
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}
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// Nop is a logger that never writes out logs.
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func Nop() *zap.Logger {
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return nop
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}
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