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config.go
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config.go
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package config
import (
"os"
"github.com/cloudwego/hertz/pkg/common/hlog"
"github.com/fsnotify/fsnotify"
"github.com/spf13/viper"
)
var globalConfig Config
type Config struct {
Env Env
Mysql Mysql `yaml:"Mysql"`
}
type Env struct {
RunMode string // dev、prod
Port string
}
type Mysql struct {
ReadDSN string `yaml:"ReadDSN"`
WriteDSN string `yaml:"WriteDSN"`
}
func init() {
os.Setenv("APUS_RUN_MODE", "prod")
viper.SetDefault("RunMode", "dev")
viper.SetEnvPrefix("APUS")
viper.BindEnv("RUN_MODE")
viper.AddConfigPath("./config")
viper.SetConfigName("config")
viper.SetConfigType("yaml")
if err := viper.ReadInConfig(); err != nil {
hlog.Fatalf("Fatal error config file: %s \n", err)
}
// 配置文件读取异常处理
if err := viper.ReadInConfig(); err != nil {
if _, ok := err.(viper.ConfigFileNotFoundError); ok {
hlog.Fatalf("no such config file: %s \n", err)
} else {
hlog.Fatalf("read config error: %s \n", err)
}
}
viper.WatchConfig()
viper.OnConfigChange(func(e fsnotify.Event) {
hlog.Infof("Config file changed: %s", e.Name)
})
globalConfig.Mysql = Mysql{
WriteDSN: viper.GetString("Mysql.WriteDSN"),
ReadDSN: viper.GetString("Mysql.ReadDSN"),
}
globalConfig.Env = Env{
RunMode: viper.GetString("RUN_MODE"),
Port: viper.GetString("Env.Port"),
}
hlog.Infof("Config file has loaded: %#v", globalConfig)
}
// Get 返回副本,以确保Config不被外部逻辑更改
func Get() Config {
return globalConfig
}