Description: Read configuration from file
 The original service is hardcoding a lot of values, let's read it from a
 .ini file.
Author: Thomas Goirand <zigo@debian.org>
Forwarded: no
Last-Update: 2019-12-10

--- golang-github-coreos-discovery-etcd-io-2.0.0+git2019.04.19.git.78fb45d3c9.orig/discovery.go
+++ golang-github-coreos-discovery-etcd-io-2.0.0+git2019.04.19.git.78fb45d3c9/discovery.go
@@ -13,6 +13,7 @@ import (
 	"github.com/coreos/go-systemd/activation"
 	"github.com/spf13/pflag"
 	"github.com/spf13/viper"
+        "github.com/go-ini/ini"
 )
 
 func fail(err string) {
@@ -51,9 +52,15 @@ func init() {
 	viper.SetEnvPrefix("disc")
 	viper.AutomaticEnv()
 
-	pflag.StringP("etcd", "e", "http://127.0.0.1:2379", "etcd endpoint location")
-	pflag.StringP("host", "h", "https://discovery.etcd.io", "discovery url prefix")
-	pflag.StringP("addr", "a", ":8087", "web service address")
+	cfg, err := ini.Load("/etc/etcd-discovery/etcd-discovery.conf")
+	if err != nil {
+		fmt.Printf("Fail to read file: %v", err)
+		os.Exit(1)
+	}
+
+	pflag.StringP("etcd", "e", cfg.Section("etcd").Key("endpoint_location").String(), "etcd endpoint location")
+	pflag.StringP("host", "h", cfg.Section("server").Key("prefix_url").String(), "discovery url prefix")
+	pflag.StringP("addr", "a", cfg.Section("server").Key("web_service_address").String(), "web service address")
 
 	viper.BindPFlag("etcd", pflag.Lookup("etcd"))
 	viper.BindPFlag("host", pflag.Lookup("host"))