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basicconfiger.go
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/
basicconfiger.go
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package configlib
import (
"encoding/json"
"errors"
"flag"
"os"
"reflect"
"strings"
"github.com/MC2BP/MicroS-Go/lib/errorlib"
)
var (
configFile = "./config/local.json"
configEnv = ""
)
func Init() {
flag.StringVar(&configFile, "conf", "./config/local.json", "Specify the path to the configuration file")
flag.StringVar(&configEnv, "envconf", "", "Specify the environment variable that contains the configuration")
}
func ReadConfig() Configer {
flag.Parse()
rawConfig, err := os.ReadFile(configFile)
if errors.Is(err, os.ErrNotExist) {
strConfig := os.Getenv(configEnv)
if strConfig == "" {
err = errorlib.Errf("Config from env '%s' was empty", configEnv)
panic(err)
}
rawConfig = []byte(strConfig)
} else if err != nil {
err = errorlib.Errf("Failed to read config, err:", err)
panic(err)
}
var config Config
err = json.Unmarshal(rawConfig, &config)
if err != nil {
panic(err)
}
var interfaceConfig interface{}
err = json.Unmarshal(rawConfig, &interfaceConfig)
if err != nil {
panic(err)
}
return &BasicConfiger{
rawJson: rawConfig,
config: config,
raw: interfaceConfig,
}
}
type BasicConfiger struct {
rawJson []byte
config Config
raw interface{}
}
func (c *BasicConfiger) GetEnvironment() string {
return c.config.Environment
}
func (c *BasicConfiger) GetApplicationID() int {
return c.config.ID
}
func (c *BasicConfiger) GetWebserver() Webserver {
return c.config.Webserver
}
func (c *BasicConfiger) GetService(service string) Service {
return c.config.Services[service]
}
func (c *BasicConfiger) GetString(path string) string {
v := c.GetObject(path)
if v == nil {
return ""
}
switch x := v.(type) {
case string:
return x
default:
return ""
}
}
func (c *BasicConfiger) GetFloat(path string) float64 {
v := c.GetObject(path)
if v == nil {
return 0
}
switch x := v.(type) {
case float32:
return float64(x)
case float64:
return x
default:
return 0
}
}
func (c *BasicConfiger) GetInt(path string) int64 {
v := c.GetObject(path)
if v == nil {
return 0
}
switch x := v.(type) {
case int:
return int64(x)
case int64:
return x
default:
return 0
}
}
func (c *BasicConfiger) GetBool(path string) bool {
v := c.GetObject(path)
if v == nil {
return false
}
switch x := v.(type) {
case bool:
return x
default:
return false
}
}
func (c *BasicConfiger) GetSlice(path string) []interface{} {
v := c.GetObject(path)
if v == nil {
return nil
}
switch x := v.(type) {
case []interface{}:
return x
default:
return nil
}
}
func (c *BasicConfiger) GetObject(path string) interface{} {
elements := strings.Split(path, ".")
object := c.raw
for _, element := range elements {
r := reflect.ValueOf(object)
f := r.FieldByName(element)
if f.IsNil() {
return ""
}
object = f.Interface()
}
return object
}