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805
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1 """
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2 holds the current message on the front door lcd
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3 """
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820
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4 import cyclone.web, sys, socket
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805
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5 import restkit
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6 from twisted.internet import reactor
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7 from twisted.internet.defer import inlineCallbacks
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8 sys.path.append("/my/proj/homeauto/lib")
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9 from cycloneerr import PrettyErrorHandler
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811
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10 from logsetup import log
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805
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11
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12 class LcdParts(object):
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829
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13 def __init__(self, putUrl, pingUrl):
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14 self.putUrl, self.pingUrl = putUrl, pingUrl
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811
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15 log.info("restarting- message is now empty")
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805
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16 self.message = ""
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17 self.lastLine = ""
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18
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19 def updateLcd(self):
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20 whole = "%-147s%-21s" % (self.message, self.lastLine)
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820
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21 try:
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22 restkit.request(url=self.putUrl,
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23 method="PUT",
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24 body=whole,
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25 headers={"content-type":"text/plain"})
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26 except socket.error, e:
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27 log.warn("update lcd failed, %s" % e)
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829
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28
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29 try:
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30 restkit.request(url=self.pingUrl, method="POST", body="")
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31 except socket.error, e:
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32 log.warn("ping failed, %s" % e)
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805
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33
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34 class Index(PrettyErrorHandler, cyclone.web.RequestHandler):
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35 @inlineCallbacks
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36 def get(self):
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37
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38 # refresh output, and make an error if we can't talk to them
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39 yield self.settings.lcdParts.updateLcd()
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40
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41 self.set_header("Content-Type", "application/xhtml+xml")
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42 self.write(open("index.html").read())
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43
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44 def getArg(s):
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45 return s.request.body.encode("ascii")
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46
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47 class Message(PrettyErrorHandler, cyclone.web.RequestHandler):
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48 def get(self):
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49 self.set_header("Content-Type", "text/plain")
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50 self.write(self.settings.lcdParts.message)
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51
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52 def put(self):
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53 self.settings.lcdParts.message = getArg(self)
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54 self.settings.lcdParts.updateLcd()
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55 self.set_status(204)
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56
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57 class LastLine(PrettyErrorHandler, cyclone.web.RequestHandler):
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58 def get(self):
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59 self.set_header("Content-Type", "text/plain")
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60 self.write(self.settings.lcdParts.lastLine)
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61
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62 def put(self):
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63 self.settings.lcdParts.lastLine = getArg(self)
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64 self.settings.lcdParts.updateLcd()
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65 self.set_status(204)
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66
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67 class Application(cyclone.web.Application):
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68 def __init__(self, lcdParts):
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69 handlers = [
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70 (r"/", Index),
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71 (r"/message", Message),
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72 (r'/lastLine', LastLine),
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73 ]
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74 settings = {"lcdParts" : lcdParts}
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75 cyclone.web.Application.__init__(self, handlers, **settings)
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76
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77 if __name__ == '__main__':
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78
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79 config = {
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819
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80 'frontDoorArduino': "http://slash:9080/",
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829
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81 'doorChangePost' : 'http://bang:8014/frontDoorChange',
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805
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82 'servePort' : 9081,
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83 }
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84
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829
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85 lcdParts = LcdParts(config['frontDoorArduino'] + 'lcd',
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86 config['doorChangePost'])
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805
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87
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88 reactor.listenTCP(config['servePort'], Application(lcdParts))
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89 reactor.run()
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