set config file

config/config.go

@@ -0,0 +1,69 @@
+package config
+
+import (
+	"io"
+
+	ini "gopkg.in/ini.v1"
+)
+// Config is the config
+type Config struct {
+	HTTP    HTTPConfig
+	LDAP    LDAPConfig
+}
+// HTTPConfig is the http config
+type HTTPConfig struct {
+	Address     string
+	
+}
+// LDAPConfig is the ldap config
+type LDAPConfig struct {
+	Base            string
+	Host            string
+	Port 			int
+	BindDN			string
+	BindPassword	string
+	UserFilter		string
+	Attributes		[]string
+}
+
+// NewFromFile retrieves the configuration from the given file
+func NewFromFile(filepath string) (*Config, error) {
+	config := NewDefault()
+	cfg, err := ini.Load(filepath)
+	if err != nil {
+		return nil, err
+	}
+	if err := cfg.MapTo(config); err != nil {
+		return nil, err
+	}
+	return config, nil
+}
+// NewDefault set a default config
+func NewDefault() *Config {
+	return &Config{
+		HTTP: HTTPConfig{
+			Address:     ":3001",
+		},
+		LDAP: LDAPConfig{
+			Base:         "dc=example,dc=com",
+			Host:         "ldap.example.com",
+			Port:         389,
+			BindDN:       "uid=readonlysuer,ou=People,dc=example,dc=com",
+			BindPassword: "readonlypassword",
+			UserFilter:   "(uid=%s)",
+			Attributes:   []string{"givenName", "sn", "mail", "uid"},
+		},
+		
+	}
+}
+// Dump return the config dump
+func Dump(config *Config, w io.Writer) error {
+	cfg := ini.Empty()
+	if err := cfg.ReflectFrom(config); err != nil {
+		return err
+	}
+	if _, err := cfg.WriteTo(w); err != nil {
+		return err
+	}
+	return nil
+}