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1 import config |
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2 |
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3 import json |
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4 import hmac |
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5 import zlib |
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6 |
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7 class Uploader(gevent.Greenlet): |
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8 def __init__(self, server): |
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9 gevent.Greenlet.__init__(self) |
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10 self.server = server |
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11 |
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12 def _run(self): |
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13 while True: |
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14 self.do() |
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15 gevent.sleep(config.UPLOAD_SLEEP) |
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16 |
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17 def get_tosend(self, readings): |
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18 tosend = {} |
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19 |
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20 tosend['fridge_on'] = self.server.fridge.is_on() |
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21 |
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22 tosend['now'] = self.server.now() |
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23 tosend['readings'] = readings |
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24 |
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25 tosend['wort_name'] = self.server.wort_name |
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26 tosend['fridge_name'] = self.server.wort_fridge_name |
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27 |
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28 tosend.update(dict(self.server.params)) |
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29 |
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30 tosend['start_time'] = self.server.start_time |
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31 tosend['uptime'] = utils.uptime() |
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32 |
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33 return tosend |
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34 |
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35 def send(self, tosend): |
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36 js = json.dumps(tosend) |
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37 js_enc = binascii.b2a_base64(zlib.compress(js)) |
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38 mac = hmac.new(config.HMAC_KEY, js_enc).hexdigest() |
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39 url_data = urllib.urlencode( {'data': js_enc, 'hmac': mac} ) |
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40 con = urllib2.urlopen(config.UPDATE_URL, url_data) |
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41 result = con.read(100) |
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42 if result != 'OK': |
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43 raise Exception("Server returned %s" % result) |
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44 |
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45 def do(): |
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46 readings = self.server.take_readings() |
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47 try: |
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48 tosend = self.get_to_send(readings) |
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49 readings = None |
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50 self.send(tosend) |
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51 except Exception, e: |
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52 EX"Error in uploader: %s" % str(e)) |
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53 finally: |
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54 if readings is not None: |
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55 self.server.pushfront(readings) |
