software/nginx-push-stream: add a promise for nginx

software/nginx-push-stream/buildout.hash.cfg

@@ -4,8 +4,8 @@ md5sum = eb4c69df9a8dbb94fb76d0a6c11e360f
 
 [template-nginx-configuration]
 filename = template-nginx.cfg.in
-md5sum = 1cff0aa9908d8ead05d9c8faef77d51f
+md5sum = b957c4cbaa4d5644688a38f1eca7a516
 
 [template-nginx]
 filename = instance-nginx.cfg.in
-md5sum = 71daee817cb08834ab1502d01a9b96d0
+md5sum = 4a8c49421c7a36901d3ab8c0b4a07769

software/nginx-push-stream/instance-nginx.cfg.in

 [buildout]
 parts =
   nginx-service
+  promises
   publish-connection-information
 
+extends = ${monitor-template:rendered}
+
 eggs-directory = ${buildout:eggs-directory}
 develop-eggs-directory = ${buildout:develop-eggs-directory}
 offline = true
@@ -53,6 +56,17 @@ subscriber-allow-methods = 'GET, HEAD, OPTIONS'
 subscriber-allow-headers = 'Authorization,Content-Type,Accept,Origin,User-Agent,DNT,Cache-Control,X-Mx-ReqToken,Keep-Alive,X-Requested-With,If-Modified-Since'
 base-url = http://[$${nginx-configuration:ip}]:$${nginx-configuration:port}
 
+[promises]
+recipe =
+promises =
+  $${nginx-available-promise:recipe}
+
+[nginx-available-promise]
+<= monitor-promise-base
+module = check_url_available
+name = $${:_buildout_section_name_}.py
+config-url = $${nginx-configuration:base-url}/status
+
 [publish-connection-information]
 recipe = slapos.cookbook:publish
 publisher-url = $${nginx-configuration:base-url}$${nginx-configuration:publisher-location-prefix}

software/nginx-push-stream/software.cfg

@@ -2,6 +2,7 @@
 extends =
   ../../stack/slapos.cfg
   ../../component/nginx/buildout.cfg
+  ../../stack/monitor/buildout.cfg
   ./buildout.hash.cfg
 
 parts =

software/nginx-push-stream/template-nginx.cfg.in

@@ -70,6 +70,11 @@ server {
     return 204;
   }
 
+  location = /status {
+    default_type "text/plain";
+    return 200 'OK';
+  }
+
   location $${nginx-configuration:publisher-location-prefix} {
             push_stream_publisher;