From c12370dd1097abe95c8e0ffa54c0d6a0c937879a Mon Sep 17 00:00:00 2001
From: Clemens Wolff <clemens@ascoderu.ca>
Date: Thu, 26 Dec 2019 00:04:41 -0500
Subject: [PATCH] Expose healthcheck endpoint (#269)

* Expose healthcheck endpoint

* Wait for service to be live before running tests
---
 docker/integtest/0-wait-for-services.sh | 10 ++++++++++
 docker/nginx/nginx.conf.template        | 12 ++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/docker/integtest/0-wait-for-services.sh b/docker/integtest/0-wait-for-services.sh
index e3ef856d..f3159ce8 100755
--- a/docker/integtest/0-wait-for-services.sh
+++ b/docker/integtest/0-wait-for-services.sh
@@ -41,6 +41,16 @@ wait_for_appinsights() {
   log "Appinsights is running"
 }
 
+wait_for_api() {
+  while ! curl -fs "http://nginx:8888/healthcheck/ping" >/dev/null; do
+    log "Waiting for api"
+    sleep "${polling_interval_seconds}s"
+  done
+
+  log "Api is running"
+}
+
 wait_for_rabbitmq
 wait_for_postgres
 wait_for_appinsights
+wait_for_api
diff --git a/docker/nginx/nginx.conf.template b/docker/nginx/nginx.conf.template
index 607a94d7..2c26d92d 100644
--- a/docker/nginx/nginx.conf.template
+++ b/docker/nginx/nginx.conf.template
@@ -22,6 +22,14 @@ http {
 
   keepalive_timeout 65;
 
+  upstream healthcheck_hosts {
+    server ${HOSTNAME_EMAIL_RECEIVE};
+    server ${HOSTNAME_CLIENT_METRICS};
+    server ${HOSTNAME_CLIENT_WRITE};
+    server ${HOSTNAME_CLIENT_READ};
+    server ${HOSTNAME_CLIENT_REGISTER};
+  }
+
   server {
     listen ${PORT};
 
@@ -37,6 +45,10 @@ http {
       root /static;
     }
 
+    location /healthcheck {
+      proxy_pass http://healthcheck_hosts;
+    }
+
     location /api/email/sendgrid {
       proxy_pass http://${HOSTNAME_EMAIL_RECEIVE};
     }