Mercurial > templog

comparison old/server/dump.py @ 212:fbdd16b45b21

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
merge
author Matt Johnston <matt@ucc.asn.au>
date Thu, 26 Jun 2014 23:03:32 +0800
parents 11a1b59b0624
children
comparison
equal deleted inserted replaced
211:59379b2bd056 212:fbdd16b45b21
1 #!/usr/bin/env python2.7
2
3 BTADDR = "00:12:03:27:70:88"
4 SLEEP_TIME = 5
5 # time that the bluetooth takes to get going?
6 EXTRA_WAKEUP = 0
7
8 FETCH_TRIES = 3
9
10 # avoid turning off the bluetooth etc.
11 TESTING = False
12
13 import sys
14 # for wrt
15 sys.path.append('/root/python')
16 import httplib
17 import time
18 import traceback
19 import binascii
20 import hmac
21 import zlib
22 import urllib
23 import urllib2
24
25 import config
26
27 from utils import monotonic_time, retry, readline, crc16
28
29 lightblue = None
30 try:
31 import lightblue
32 except ImportError:
33 import bluetooth
34
35 def get_socket(addr):
36 if lightblue:
37 s = lightblue.socket()
38 s.connect((addr, 1))
39 s.settimeout(3)
40 else:
41 s = bluetooth.BluetoothSocket( bluetooth.RFCOMM )
42 s.connect((addr, 1))
43
44 s.setblocking(False)
45
46 return s
47
48
49 @retry()
50 def fetch(sock):
51 print "fetch"
52 sock.send("fetch\n")
53
54 crc = 0
55
56 lines = []
57 l = readline(sock)
58 if l != 'START\n':
59 print>>sys.stderr, "Bad expected START line '%s'\n" % l.rstrip('\n')
60 return None
61 crc = crc16(l, crc)
62
63 while True:
64 l = readline(sock)
65
66 crc = crc16(l, crc)
67
68 if l == 'END\n':
69 break
70
71 lines.append(l.rstrip('\n'))
72
73 print lines
74
75 l = readline(sock)
76 recv_crc = None
77 try:
78 k, v = l.rstrip('\n').split('=')
79 print k,v
80 if k == 'CRC':
81 recv_crc = int(v)
82 if recv_crc < 0 or recv_crc > 0xffff:
83 recv_crc = None
84 except ValueError:
85 pass
86
87 if recv_crc is None:
88 print>>sys.stderr, "Bad expected CRC line '%s'\n" % l.rstrip('\n')
89 return None
90
91 if recv_crc != crc:
92 print>>sys.stderr, "Bad CRC: calculated 0x%x vs received 0x%x\n" % (crc, recv_crc)
93 return None
94
95 return lines
96
97 @retry()
98 def turn_off(sock):
99 if TESTING:
100 return 99
101 print>>sys.stderr, "sending btoff"
102 sock.send("btoff\n");
103 # read newline
104 l = readline(sock)
105 if not l:
106 print>>sys.stderr, "Bad response to btoff\n"
107 return None
108
109 if not l.startswith('off:'):
110 print>>sys.stderr, "Bad response to btoff '%s'\n" % l
111 return None
112 off, next_wake = l.rstrip().split(':')
113 print>>sys.stderr, "Next wake %s" % next_wake
114
115 return int(next_wake)
116
117 @retry()
118 def clear_meas(sock):
119 sock.send("clear\n");
120 l = readline(sock)
121 if l and l.rstrip() == 'cleared':
122 return True
123
124 print>>sys.stderr, "Bad response to clear %s\n" % str(l)
125 return False
126
127 def send_results(lines):
128 enc_lines = binascii.b2a_base64(zlib.compress('\n'.join(lines)))
129 mac = hmac.new(config.HMAC_KEY, enc_lines).hexdigest()
130
131 url_data = urllib.urlencode( {'lines': enc_lines, 'hmac': mac} )
132 con = urllib2.urlopen(config.UPDATE_URL, url_data)
133 result = con.read(100)
134 if result == 'OK':
135 return True
136 else:
137 print>>sys.stderr, "Bad result '%s'" % result
138 return False
139
140 def do_comms(sock):
141 args = sys.argv[1:]
142 print "do_comms"
143 for a in args:
144 sock.send('%s\n' % a)
145
146 while True:
147 l = readline(sock)
148 if not l:
149 print '.',
150 sys.stdout.flush()
151 else:
152 print l
153
154 testcount = 0
155
156 def sleep_for(secs):
157 until = monotonic_time() + secs
158 while True:
159 length = until - monotonic_time()
160 if length <= 0:
161 return
162 time.sleep(length)
163
164 def main():
165 next_wake_time = 0
166
167 while True:
168 sock = None
169 try:
170 sock = get_socket(BTADDR)
171 except Exception, e:
172 print>>sys.stderr, "Error connecting:"
173 traceback.print_exc(file=sys.stderr)
174 sleep_time = SLEEP_TIME
175 if sock:
176 next_wake = None
177 try:
178 next_wake_interval = do_comms(sock)
179 next_wake_time = time.time() + next_wake_interval
180 except Exception, e:
181 print>>sys.stderr, "Error in do_comms:"
182 traceback.print_exc(file=sys.stderr)
183 if next_wake_time > time.time():
184 sleep_time = min(next_wake_time - time.time() - EXTRA_WAKEUP, sleep_time)
185
186 print "Sleeping for %d" % sleep_time
187 sleep_for(sleep_time)
188
189 if __name__ == '__main__':
190 main()