Move to gevent production http server

apiserver/server.py

@@ -17,6 +17,12 @@ from flask import abort, Flask, request, render_template
 from werkzeug.exceptions import NotFound
 from flask_cors import CORS
 
+import gevent
+from gevent import monkey
+from gevent.pywsgi import WSGIServer
+
+monkey.patch_all()
+
 archive.init()
 
 CACHE_LENGTH = 300
@@ -99,11 +105,6 @@ def static_story(sid):
             url=url,
             description=description)
 
-print('Starting Flask...')
-web_thread = threading.Thread(target=flask_app.run, kwargs={'port': 33842})
-web_thread.setDaemon(True)
-web_thread.start()
-
 def new_id():
     nid = gen_rand_id()
     while nid in news_cache or archive.get_story(nid):
@@ -117,6 +118,11 @@ def remove_ref(old_ref):
     old_id = news_ref_to_id.pop(old_ref)
     logging.info('Removed ref {} id {}.'.format(old_ref, old_id))
 
+http_server = WSGIServer(('', 33842), flask_app)
+
+def feed_thread():
+    global news_index
+
     try:
         while True:
             # onboard new stories
@@ -148,11 +154,21 @@ try:
                 else:
                     remove_ref(update_ref)
 
-        time.sleep(3)
+            gevent.sleep(3)
 
             news_index += 1
             if news_index == CACHE_LENGTH: news_index = 0
 
+    except BaseException as e:
+        logging.error('feed_thread error: {} {}'.format(e.__class__.__name__, e))
+        http_server.stop()
+
+print('Starting Feed thread...')
+gevent.spawn(feed_thread)
+
+print('Starting HTTP thread...')
+try:
+    http_server.serve_forever()
 except KeyboardInterrupt:
     logging.info('Exiting...')
 finally: