--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/py/uploader.py	Thu Nov 29 23:50:40 2012 +0800
@@ -0,0 +1,55 @@
+import config
+
+import json
+import hmac
+import zlib
+
+class Uploader(gevent.Greenlet):
+    def __init__(self, server):
+        gevent.Greenlet.__init__(self)
+        self.server = server
+
+    def _run(self):
+        while True:
+            self.do()
+            gevent.sleep(config.UPLOAD_SLEEP)
+
+    def get_tosend(self, readings):
+        tosend = {}
+
+        tosend['fridge_on'] = self.server.fridge.is_on()
+
+        tosend['now'] = self.server.now()
+        tosend['readings'] = readings
+
+        tosend['wort_name'] = self.server.wort_name
+        tosend['fridge_name'] = self.server.wort_fridge_name
+
+        tosend.update(dict(self.server.params))
+
+        tosend['start_time'] = self.server.start_time
+        tosend['uptime'] = utils.uptime()
+
+        return tosend
+
+    def send(self, tosend):
+        js = json.dumps(tosend)
+        js_enc = binascii.b2a_base64(zlib.compress(js))
+        mac = hmac.new(config.HMAC_KEY, js_enc).hexdigest()
+        url_data = urllib.urlencode( {'data': js_enc, 'hmac': mac} )
+        con = urllib2.urlopen(config.UPDATE_URL, url_data)
+        result = con.read(100)
+        if result != 'OK':
+            raise Exception("Server returned %s" % result)
+
+    def do():
+        readings = self.server.take_readings()
+        try:
+            tosend = self.get_to_send(readings)
+            readings = None
+            self.send(tosend)
+        except Exception, e:
+            EX"Error in uploader: %s" % str(e))
+        finally:
+            if readings is not None:
+                self.server.pushfront(readings)