feat(proxy): Add reverse proxy feature

app/server/api.go

@@ -0,0 +1,46 @@
+package server
+
+import (
+	"net/http"
+
+	"git.secnex.io/secnex/api-gateway/config"
+)
+
+type Apis map[string]*Api
+
+type Api struct {
+	ID     string
+	Host   *Host
+	Target *Target
+	domain string
+}
+
+func NewApis(cfg *config.Configuration, hosts Hosts, targets Targets) Apis {
+	apis := make(Apis)
+	for _, api := range cfg.Apis {
+		apis[api.ID] = NewApi(&api, hosts[api.Host], targets[api.Target])
+	}
+	return apis
+}
+
+func NewApi(api *config.Api, host *Host, target *Target) *Api {
+	return &Api{
+		ID:     api.ID,
+		Host:   host,
+		Target: target,
+		domain: host.Domain,
+	}
+}
+
+func (as Apis) GetApi(domain string) *Api {
+	for _, api := range as {
+		if api.domain == domain {
+			return api
+		}
+	}
+	return nil
+}
+
+func (a *Api) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	a.Target.proxy.ServeHTTP(w, r)
+}