annotate py/receive.py @ 274:c0f903cf8268

w1 master dir moved with my new sensor
author Matt Johnston <matt@ucc.asn.au>
date Tue, 17 Nov 2015 22:25:02 +0800
parents 185621f47040
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1 #!/usr/bin/env python
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2
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3 import params
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4 import json
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5 import sys
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6 import tempfile
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7 import signal
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8 import os
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9
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10 import config
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11
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12
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13 def same_type(a, b):
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14 ta = type(a)
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15 tb = type(b)
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16
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17 if ta == int:
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18 ta = float
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19 if tb == int:
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20 tb = float
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21
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22 return (ta == tb)
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23
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24 def main():
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25
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26 i = sys.stdin.read()
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27 new_params = json.loads(i)
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28
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29 def_params = params.Params()
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30
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31 if def_params.keys() != new_params.keys():
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32 diff = def_params.keys() ^ new_params.keys()
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33 return "Mismatching params, %s" % str(diff)
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34
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35 for k, v in new_params.items():
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36 if not same_type(v, def_params[k]):
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37 return "Bad type for %s" % k
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38
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39 dir = os.path.dirname(config.PARAMS_FILE)
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41 try:
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42 t = tempfile.NamedTemporaryFile(prefix='config',
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43 dir = dir,
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44 delete = False)
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45
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46 t.write(json.dumps(new_params, sort_keys=True, indent=4)+'\n')
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47 name = t.name
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48 t.close()
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49
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50 os.rename(name, config.PARAMS_FILE)
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51 except Exception as e:
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52 return "Problem: %s" % e
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53
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54 try:
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55 pid = int(open('%s/tempserver.pid' % dir, 'r').read())
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56 if pid < 2:
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57 return "Bad pid %d" % pid
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58 os.kill(pid, signal.SIGHUP)
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59 except Exception as e:
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60 return "HUP problem: %s" % e
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61
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62 return 'Good Update'
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64 if __name__ == '__main__':
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65 print(main())
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