Add status-feed-url build flag within new externalLinks prop in AllRoutes

server/mux.go

@@ -28,6 +28,7 @@ type MuxOpts struct {
 	UseAuth       bool                 // UseAuth turns on Github OAuth and JWT
 	Auth          oauth2.Authenticator // Auth is used to authenticate and authorize
 	ProviderFuncs []func(func(oauth2.Provider, oauth2.Mux))
+	StatusFeedURL string // JSON Feed URL for the client Status page News Feed
 }
 
 // NewMux attaches all the route handlers; handler returned servers chronograf.
@@ -180,8 +181,13 @@ func NewMux(opts MuxOpts, service Service) http.Handler {
 	router.PUT("/chronograf/v1/sources/:id/dbs/:dbid/rps/:rpid", service.UpdateRetentionPolicy)
 	router.DELETE("/chronograf/v1/sources/:id/dbs/:dbid/rps/:rpid", service.DropRetentionPolicy)
 
+	externalLinks := getExternalLinksResponse{
+		StatusFeed: &opts.StatusFeedURL,
+	}
+
 	allRoutes := &AllRoutes{
 		Logger:        opts.Logger,
+		ExternalLinks: externalLinks,
 	}
 
 	router.Handler("GET", "/chronograf/v1/", allRoutes)

server/routes.go

@@ -36,16 +36,28 @@ type getRoutesResponse struct {
 	Dashboards    string                   `json:"dashboards"`       // Location of the dashboards endpoint
 	Auth          []AuthRoute              `json:"auth"`             // Location of all auth routes.
 	Logout        *string                  `json:"logout,omitempty"` // Location of the logout route for all auth routes
+	ExternalLinks getExternalLinksResponse `json:"external"`         // All external links for the client to use
 }
 
-// AllRoutes is a handler that returns all links to resources in Chronograf server.
+type getExternalLinksResponse struct {
+	StatusFeed *string `json:"statusFeed,omitempty"` // Location of the a JSON Feed for client's Status page News Feed
+}
+
+// AllRoutes is a handler that returns all links to resources in Chronograf server, as well as
+// external links for the client to know about, such as for JSON feeds or custom side nav buttons.
 // Optionally, routes for authentication can be returned.
 type AllRoutes struct {
 	AuthRoutes    []AuthRoute              // Location of all auth routes. If no auth, this can be empty.
 	LogoutLink    string                   // Location of the logout route for all auth routes. If no auth, this can be empty.
+	ExternalLinks getExternalLinksResponse // All external links for the client to use
 	Logger        chronograf.Logger
 }
 
+// AllExternalLinks returns
+type AllExternalLinks struct {
+	StatusFeed string // Location of the JSON Feed for consumption by the News Feed on the client Status page.
+}
+
 // ServeHTTP returns all top level routes within chronograf
 func (a *AllRoutes) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	routes := getRoutesResponse{
@@ -55,6 +67,7 @@ func (a *AllRoutes) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		Mappings:      "/chronograf/v1/mappings",
 		Dashboards:    "/chronograf/v1/dashboards",
 		Auth:          make([]AuthRoute, len(a.AuthRoutes)), // We want to return at least an empty array, rather than null
+		ExternalLinks: a.ExternalLinks,
 	}
 
 	// The JSON response will have no field present for the LogoutLink if there is no logout link.

server/routes_test.go

@@ -29,7 +29,7 @@ func TestAllRoutes(t *testing.T) {
 	if err := json.Unmarshal(body, &routes); err != nil {
 		t.Error("TestAllRoutes not able to unmarshal JSON response")
 	}
-	want := `{"layouts":"/chronograf/v1/layouts","mappings":"/chronograf/v1/mappings","sources":"/chronograf/v1/sources","me":"/chronograf/v1/me","dashboards":"/chronograf/v1/dashboards","auth":[]}
+	want := `{"layouts":"/chronograf/v1/layouts","mappings":"/chronograf/v1/mappings","sources":"/chronograf/v1/sources","me":"/chronograf/v1/me","dashboards":"/chronograf/v1/dashboards","auth":[],"external":{}}
 `
 	if want != string(body) {
 		t.Errorf("TestAllRoutes\nwanted\n*%s*\ngot\n*%s*", want, string(body))
@@ -67,7 +67,7 @@ func TestAllRoutesWithAuth(t *testing.T) {
 	if err := json.Unmarshal(body, &routes); err != nil {
 		t.Error("TestAllRoutesWithAuth not able to unmarshal JSON response")
 	}
-	want := `{"layouts":"/chronograf/v1/layouts","mappings":"/chronograf/v1/mappings","sources":"/chronograf/v1/sources","me":"/chronograf/v1/me","dashboards":"/chronograf/v1/dashboards","auth":[{"name":"github","label":"GitHub","login":"/oauth/github/login","logout":"/oauth/github/logout","callback":"/oauth/github/callback"}],"logout":"/oauth/logout"}
+	want := `{"layouts":"/chronograf/v1/layouts","mappings":"/chronograf/v1/mappings","sources":"/chronograf/v1/sources","me":"/chronograf/v1/me","dashboards":"/chronograf/v1/dashboards","auth":[{"name":"github","label":"GitHub","login":"/oauth/github/login","logout":"/oauth/github/logout","callback":"/oauth/github/callback"}],"logout":"/oauth/logout","external":{}}
 `
 	if want != string(body) {
 		t.Errorf("TestAllRoutesWithAuth\nwanted\n*%s*\ngot\n*%s*", want, string(body))

server/server.go

@@ -76,6 +76,8 @@ type Server struct {
 	GenericTokenURL     string   `long:"generic-token-url" description:"OAuth 2.0 provider's token endpoint URL" env:"GENERIC_TOKEN_URL"`
 	GenericAPIURL       string   `long:"generic-api-url" description:"URL that returns OpenID UserInfo compatible information." env:"GENERIC_API_URL"`
 
+	StatusFeedURL string `long:"status-feed-url" description:"URL of a JSON Feed to display as a News Feed on the client Status page." env:"STATUS_FEED_URL"`
+
 	ReportingDisabled bool   `short:"r" long:"reporting-disabled" description:"Disable reporting of usage stats (os,arch,version,cluster_id,uptime) once every 24hr" env:"REPORTING_DISABLED"`
 	LogLevel          string `short:"l" long:"log-level" value-name:"choice" choice:"debug" choice:"info" choice:"error" default:"info" description:"Set the logging level" env:"LOG_LEVEL"`
 	Basepath          string `short:"p" long:"basepath" description:"A URL path prefix under which all chronograf routes will be mounted" env:"BASE_PATH"`
@@ -258,6 +260,7 @@ func (s *Server) Serve(ctx context.Context) error {
 		ProviderFuncs: providerFuncs,
 		Basepath:      basepath,
 		PrefixRoutes:  s.PrefixRoutes,
+		StatusFeedURL: s.StatusFeedURL,
 	}, service)
 
 	// Add chronograf's version header to all requests