From 7c4120ff11a2ab94820a6a4f2709b3018c6dbc62 Mon Sep 17 00:00:00 2001
From: Tom Wilkie <tom@weave.works>
Date: Tue, 2 Jun 2015 10:10:20 +0000
Subject: [PATCH] Add /api handler, expose app version number.

---
 app/router.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/app/router.go b/app/router.go
index b294949f4..931f7c2bc 100644
--- a/app/router.go
+++ b/app/router.go
@@ -13,6 +13,7 @@ import (
 func Router(c Reporter) *mux.Router {
 	router := mux.NewRouter()
 	get := router.Methods("GET").Subrouter()
+	get.HandleFunc("/api", apiHandler)
 	get.HandleFunc("/api/topology", makeTopologyList(c))
 	get.HandleFunc("/api/topology/{topology}", captureTopology(c, handleTopology))
 	get.HandleFunc("/api/topology/{topology}/ws", captureTopology(c, handleWs))
@@ -35,6 +36,15 @@ func captureTopology(rep Reporter, f func(Reporter, topologyView, http.ResponseW
 	}
 }
 
+// APIDetails are some generic details that can be fetched from /api
+type APIDetails struct {
+	Version string `json:"version"`
+}
+
+func apiHandler(w http.ResponseWriter, r *http.Request) {
+	respondWith(w, http.StatusOK, APIDetails{Version: version})
+}
+
 type topologyView struct {
 	human           string
 	selector        topologySelecter