Base config support

config/config.go

@@ -0,0 +1,17 @@
+package config
+
+type Config struct {
+	Server   Server
+	Services map[string]Service
+}
+
+type Server struct {
+	Address string
+	Port    int
+}
+
+type Service struct {
+	BaseURL   string
+	ForwardTo string
+	Protocol  string
+}

config/test/sample.json

@@ -0,0 +1,18 @@
+{
+    "server": {
+        "address": "127.0.0.1",
+        "port": 8080
+    },
+    "services": {
+        "test-app1": {
+            "baseUrl": "test/",
+            "forwardTo": "127.0.0.1:3030/",
+            "protocol": "http"
+        },
+        "test-app2": {
+            "baseUrl": "test2/",
+            "forwardTo": "httpbin.org/",
+            "protocol": "http"
+        }
+    }
+}

go.mod

@@ -1,3 +1,5 @@
 module vegvisir
 
 go 1.13
+
+require github.com/opentracing/opentracing-go v1.2.0 // indirect

main.go

@@ -1,4 +1,10 @@
 package main
 
+import (
+	"vegvisir/server"
+)
+
 func main() {
+	s := server.NewServer()
+	err := s.LoadConfig("config/test/sample.json")
 }

server/server.go

@@ -0,0 +1,31 @@
+package server
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"os"
+	"vegvisir/config"
+)
+
+type Server struct {
+	Config config.Config
+}
+
+func NewServer() Server {
+	return Server{}
+}
+
+func (s *Server) LoadConfig(file string) error {
+	if _, err := os.Stat(file); err != nil {
+		return err
+	}
+
+	data, err := ioutil.ReadFile(file)
+	if err != nil {
+		return err
+	}
+
+	json.Unmarshal(data, &s.Config)
+
+	return nil
+}