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config.go
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config.go
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package config
import (
"fmt"
"net/http"
"os"
"strings"
log "github.com/sirupsen/logrus"
"github.com/spf13/viper"
)
//Config ...
type Config struct {
ResourceLoaderType string `mapstructure:"FEATWS_RULLER_RESOURCE_LOADER_TYPE"`
ResourceLoaderURL string `mapstructure:"FEATWS_RULLER_RESOURCE_LOADER_URL"`
ResourceLoaderHeaders http.Header
ResourceLoaderHeadersStr string `mapstructure:"FEATWS_RULLER_RESOURCE_LOADER_HEADERS"`
Port string `mapstructure:"PORT"`
DefaultRules string `mapstructure:"FEATWS_RULLER_DEFAULT_RULES"`
DisableSSLVerify bool `mapstructure:"FEATWS_DISABLE_SSL_VERIFY"`
ResolverBridgeURL string `mapstructure:"FEATWS_RULLER_RESOLVER_BRIDGE_URL"`
ResolverBridgeHeaders http.Header
ResolverBridgeHeadersStr string `mapstructure:"FEATWS_RULLER_RESOLVER_BRIDGE_HEADERS"`
ExternalHost string `mapstructure:"EXTERNAL_HOST"`
}
var config = &Config{}
var loaded = false
//LoadConfig ...
func LoadConfig() (err error) {
viper.AddConfigPath("./")
viper.SetConfigFile(".env")
viper.SetConfigType("env")
viper.AutomaticEnv()
viper.SetDefault("FEATWS_RULLER_RESOURCE_LOADER_TYPE", "http")
viper.SetDefault("FEATWS_RULLER_RESOURCE_LOADER_URL", "")
viper.SetDefault("FEATWS_RULLER_RESOURCE_LOADER_HEADERS", "")
viper.SetDefault("FEATWS_RULLER_RESOLVER_BRIDGE_URL", "")
viper.SetDefault("FEATWS_RULLER_RESOLVER_BRIDGE_HEADERS", "")
viper.SetDefault("FEATWS_RULLER_DEFAULT_RULES", "")
viper.SetDefault("PORT", "8000")
viper.SetDefault("FEATWS_DISABLE_SSL_VERIFY", false)
viper.SetDefault("EXTERNAL_HOST", "localhost:8000")
err = viper.ReadInConfig()
if err != nil {
if err2, ok := err.(*os.PathError); !ok {
err = err2
log.Errorf("Error on Load Config: %v", err)
return
}
}
err = viper.Unmarshal(config)
config.ResourceLoaderHeaders = make(http.Header)
resourceLoaderHeaders := strings.Split(config.ResourceLoaderHeadersStr, ",")
for _, value := range resourceLoaderHeaders {
entries := strings.Split(value, ":")
if len(entries) == 2 {
config.ResourceLoaderHeaders.Set(entries[0], entries[1])
}
}
config.ResolverBridgeHeaders = make(http.Header)
resolverBridgeHeaders := strings.Split(config.ResolverBridgeHeadersStr, ",")
for _, value := range resolverBridgeHeaders {
entries := strings.Split(value, ":")
if len(entries) == 2 {
config.ResolverBridgeHeaders.Set(entries[0], entries[1])
}
}
return
}
//GetConfig ...
func GetConfig() *Config {
if !loaded {
err := LoadConfig()
loaded = true
if err != nil {
panic(fmt.Sprintf("load config error: %s", err))
}
}
return config
}