logger/logger.go

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package logger
import (
"fmt"
"github.com/caarlos0/env/v6"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
var config LogConfig
var Say *zap.SugaredLogger
// 避免异常在第一次调用时初始化一个只打印到控制台的logger
func init() {
if Say == nil {
// 从环境变量读取配置
var c LogConfig
if err := env.Parse(&c); err != nil {
fmt.Println("日志配置解析错误: " + err.Error())
c = LogConfig{Mode: Dev, LokiEnable: false, FileEnable: false}
}
InitLogger(c)
}
}
// InitLogger 初始化日志工具
func InitLogger(c LogConfig) {
config = c
var cores []zapcore.Core
// 生成输出到控制台的Core
consoleCore := initConsoleCore()
cores = append(cores, consoleCore)
// 生成输出到Loki的Core
if config.LokiEnable {
lokiCore := initLokiCore()
cores = append(cores, lokiCore)
}
// 输出到文件的Core
if config.FileEnable {
fileCore := initFileCore()
cores = append(cores, fileCore)
}
// 增加 caller 信息
logger := zap.New(zapcore.NewTee(cores...), zap.AddCaller())
Say = logger.Sugar()
}