From a8e947e93d2c06344a708a71e22787c20af9c2a6 Mon Sep 17 00:00:00 2001
From: Eric Eastwood <contact@ericeastwood.com>
Date: Fri, 18 Dec 2020 02:06:52 -0600
Subject: [PATCH] Add health check endpoint

Fix https://github.com/matrix-org/dendrite/issues/1668
---
 setup/base.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/setup/base.go b/setup/base.go
index acbf2d35..fd4e96f0 100644
--- a/setup/base.go
+++ b/setup/base.go
@@ -26,6 +26,7 @@ import (
 	"github.com/matrix-org/dendrite/internal/caching"
 	"github.com/matrix-org/dendrite/internal/httputil"
 	"github.com/matrix-org/gomatrixserverlib"
+	"github.com/matrix-org/util"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"golang.org/x/net/http2"
 	"golang.org/x/net/http2/h2c"
@@ -311,6 +312,17 @@ func (b *BaseDendrite) SetupAndServeHTTP(
 		}
 	}
 
+	externalRouter.Handle("/health",
+		httputil.MakeExternalAPI("health", func(req *http.Request) util.JSONResponse {
+			return util.JSONResponse{
+				Code: http.StatusOK,
+				JSON: struct {
+					Versions bool `json:"success"`
+				}{true},
+			}
+		}),
+	).Methods(http.MethodGet)
+
 	internalRouter.PathPrefix(httputil.InternalPathPrefix).Handler(b.InternalAPIMux)
 	if b.Cfg.Global.Metrics.Enabled {
 		internalRouter.Handle("/metrics", httputil.WrapHandlerInBasicAuth(promhttp.Handler(), b.Cfg.Global.Metrics.BasicAuth))