func setupConfig()

in api/internal/conf/conf.go [187:291]
78 lines of code
22 McCabe index (conditional complexity)

func setupConfig() {
	// setup config file path
	if ConfigFile == "" {
		ConfigFile = "conf.yaml"
		if profile := os.Getenv("APISIX_PROFILE"); profile != "" {
			ConfigFile = "conf" + "-" + profile + ".yaml"
		}
		viper.SetConfigName(ConfigFile)
		viper.SetConfigType("yaml")
		viper.AddConfigPath(WorkDir + "/conf")
	} else {
		viper.SetConfigFile(ConfigFile)
	}

	// load config
	if err := viper.ReadInConfig(); err != nil {
		panic(fmt.Sprintf("fail to read configuration, err: %s", err.Error()))
	}

	// unmarshal config
	config := Config{}
	err := viper.Unmarshal(&config)
	if err != nil {
		panic(fmt.Sprintf("fail to unmarshal configuration: %s, err: %s", ConfigFile, err.Error()))
	}

	// listen
	if config.Conf.Listen.Port != 0 {
		ServerPort = config.Conf.Listen.Port
	}
	if config.Conf.Listen.Host != "" {
		ServerHost = config.Conf.Listen.Host
	}

	// SSL
	if config.Conf.SSL.Port != 0 {
		SSLPort = config.Conf.SSL.Port
	}
	if config.Conf.SSL.Cert != "" {
		SSLCert = config.Conf.SSL.Cert
	}
	if config.Conf.SSL.Key != "" {
		SSLKey = config.Conf.SSL.Key
	}

	// ETCD Storage
	if len(config.Conf.Etcd.Endpoints) > 0 {
		initEtcdConfig(config.Conf.Etcd)
	}

	// error log
	if config.Conf.Log.ErrorLog.Level != "" {
		ErrorLogLevel = config.Conf.Log.ErrorLog.Level
	}
	if config.Conf.Log.ErrorLog.FilePath != "" {
		ErrorLogPath = config.Conf.Log.ErrorLog.FilePath
	}

	// access log
	if config.Conf.Log.AccessLog.FilePath != "" {
		AccessLogPath = config.Conf.Log.AccessLog.FilePath
	}

	if !filepath.IsAbs(ErrorLogPath) {
		if strings.HasPrefix(ErrorLogPath, "winfile") {
			return
		}
		ErrorLogPath, err = filepath.Abs(filepath.Join(WorkDir, ErrorLogPath))
		if err != nil {
			panic(err)
		}
		if runtime.GOOS == "windows" {
			ErrorLogPath = `winfile:///` + ErrorLogPath
		}
	}
	if !filepath.IsAbs(AccessLogPath) {
		if strings.HasPrefix(AccessLogPath, "winfile") {
			return
		}
		AccessLogPath, err = filepath.Abs(filepath.Join(WorkDir, AccessLogPath))
		if err != nil {
			panic(err)
		}
		if runtime.GOOS == "windows" {
			AccessLogPath = `winfile:///` + AccessLogPath
		}
	}

	AllowList = config.Conf.AllowList

	// set degree of parallelism
	initParallelism(config.Conf.MaxCpu)

	// set authentication
	initAuthentication(config.Authentication)

	// set Oidc
	initOidc(config.Oidc)

	// set plugin
	initPlugins(config.Plugins)

	// security configuration
	initSecurity(config.Conf.Security)
}