Store alerts in sheriff-o-matic's memcache.

Tools/GardeningServer/alerts.py

Index: Tools/GardeningServer/alerts.py
diff --git a/Tools/GardeningServer/alerts.py b/Tools/GardeningServer/alerts.py
new file mode 100644
index 0000000000000000000000000000000000000000..e9f136f0aab5aa4edd30c01f8640b4fd1969b0c1
--- /dev/null
+++ b/Tools/GardeningServer/alerts.py
@@ -0,0 +1,45 @@
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import calendar
+import datetime
+import json
+import webapp2
+
+from google.appengine.api import memcache
+
+
+class DateTimeEncoder(json.JSONEncoder):
+    def default(self, obj):
+        if isinstance(obj, datetime.datetime):
+            return calendar.timegm(obj.timetuple())
+        # Let the base class default method raise the TypeError
+        return json.JSONEncoder.default(self, obj)
+
+
+class AlertsHandler(webapp2.RequestHandler):
+    MEMCACHE_ALERTS_KEY = 'alerts'
+
+    def get(self):
+        self.response.headers.add_header('Access-Control-Allow-Origin', '*')
+        self.response.headers['Content-Type'] = 'application/json'
+        alerts = memcache.get(AlertsHandler.MEMCACHE_ALERTS_KEY)
+        if not alerts:
+            return
+        self.response.write(json.dumps(alerts, cls=DateTimeEncoder, indent=1))
+
+    def post(self):
+        try:
+            alerts = json.loads(self.request.get('content'))
+        except ValueError:
+            self.response.set_status(400, 'content field was not JSON')
+            return
+        alerts.update({
+            'date': datetime.datetime.utcnow(),
+            'alerts': alerts['alerts']})
+        memcache.set(AlertsHandler.MEMCACHE_ALERTS_KEY, alerts)
+
+
+app = webapp2.WSGIApplication([
+    ('/alerts', AlertsHandler)])