1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
|
import constants
import readdata
import sys
import json
# import requests # As this takes SEVEN SECONDS, it's delayed until needed
from sys import stdout, stderr
from datetime import timedelta, datetime
from time import sleep
from itertools import islice, takewhile
from database_records import GenericTimestampedRecord, EGVRecord
# from pytz import UTC # Since the dependency is external, don't import unless needed
from optparse import OptionParser
G5_IS_DEFAULT = True
parser = OptionParser()
parser.add_option("--g4", action="store_false", dest="g5", default=G5_IS_DEFAULT, help="use Dexcom G4 instead of Dexcom G5")
parser.add_option("--g5", action="store_true", dest="g5", default=G5_IS_DEFAULT, help="use Dexcom G5 instead of Dexcom G4")
parser.add_option("-a", "--all", action="store_const", dest="command", const="dump_everything", help="dump all available records")
parser.add_option("-p", "--poll", action="store_const", dest="command", const="poll", help="poll for latest CGM record")
parser.add_option("--test", action="store_const", dest="command", const="test", help="test")
parser.add_option("--hours", type="int", dest="hours", default=None, help="display N most recent hours of CGM records")
parser.add_option("-n", type="int", dest="num_records", default=None, help="number of CGM records to display")
parser.add_option("-v", "--verbose", action="store_true", dest="verbose", help="verbosity (currently for debugging)")
parser.add_option("-H", "--human", action="store_true", dest="human", help="print human-readable times")
parser.add_option("-j", "--json", action="store_true", dest="json", help="print JSON output")
parser.add_option("--http", type="string", dest="host", help="submit via HTTP")
(options, args) = parser.parse_args()
command = options.command or "dump_cgm"
VERBOSE = options.verbose
HUMAN = options.human
JSON = options.json
HOST = options.host
if command is 'dump_cgm' and options.num_records is None and not options.hours:
options.hours = 2
if options.num_records <= 0:
options.num_records = None
def get_dexcom_reader():
if options.g5:
dd = readdata.DexcomG5.FindDevice()
return readdata.DexcomG5(dd)
else:
dd = readdata.Dexcom.FindDevice()
return readdata.Dexcom(dd)
dr = get_dexcom_reader()
def parseable_record_types():
unparseable = ['FIRMWARE_PARAMETER_DATA', 'RECEIVER_LOG_DATA', 'USER_SETTING_DATA', 'MAX_VALUE']
parsed_to_xml = ['MANUFACTURING_DATA', 'PC_SOFTWARE_PARAMETER']
skip = unparseable + parsed_to_xml
return filter(lambda v: not v in skip, constants.RECORD_TYPES)
def choose_range(rs):
if options.hours:
now = dr.ReadSystemTime()
when = now - timedelta(hours=options.hours)
return takewhile(lambda r: r.system_time > when, rs)
else:
return islice(rs, options.num_records)
def dump_everything():
for t in parseable_record_types():
print t + ":"
for r in choose_range(dr.iter_records(t)):
print toJSON(r) if JSON else r
def dump_cgm():
for cr in reversed(list(choose_range(dr.iter_records('EGV_DATA')))):
if not cr.display_only:
print toJSON(cr) if JSON else cr
def recent(t):
now = dr.ReadSystemTime()
return t.system_time > now - timedelta(minutes=5)
def print_verbose(s):
global VERBOSE
if VERBOSE:
stderr.write('%s\n' % str(s))
def read_recent_egv_data():
try:
r = dr.ReadRecords('EGV_DATA', 1)[-1]
if recent(r) and not r.is_special and not r.display_only:
return r
else:
return None
except ValueError as v:
if (v.args[0] == 'Attempting to use a port that is not open'):
return False
else:
print_verbose(v)
return None
except:
print_verbose(sys.exc_info)
return None
def time_fmt(t):
global HUMAN
return t.strftime('%c' if HUMAN else '%s')
def format_times(now, stamp):
diff = (stamp - now).total_seconds()
operand = '-' if diff < 0 else '+' # should always be -
return '%s %s %d' % (time_fmt(now), operand, abs(diff))
def print_localtime(str):
print '%s (system): %s' % (time_fmt(datetime.now()), str)
CONNECTED = None
def connected(state):
global CONNECTED
if (state == CONNECTED):
return
else:
CONNECTED = state
print_localtime('dexcom receiver %s connected' % ('is' if state else 'is not'))
def sleep_verbose(n):
print_verbose('sleep(%d)' % n)
sleep(n)
def POST(path, json_str):
msg = None
try:
import requests
resp = requests.post(HOST + path, data=json_str,
headers={'Content-type': 'application/json'})
msg = resp.text
resp.raise_for_status()
return True
except requests.exceptions.HTTPError as e:
print_verbose(e)
if msg:
print_verbose(msg)
return False
def send_ping(now):
if HOST:
POST('/ping', toJSON(now))
def print_cgm_bg(now, r):
if HOST:
r.trend_arrow.replace('45_', 'DIAGONAL_', 1)
if not r.is_special:
POST('/egv_data', toJSON(r))
send_ping(now)
return
elif JSON:
print toJSON(r)
else:
print '%s: %s %s' % (format_times(now, r.system_time), r.glucose, r.trend_arrow)
stdout.flush()
def poll():
print_localtime('dexcom_dumper started')
while True:
r = read_recent_egv_data()
if r is None:
connected(True)
if HOST:
now = dr.ReadSystemTime()
send_ping(now)
sleep_verbose(10)
elif r is False:
connected(False)
sleep_verbose(10)
else:
now = dr.ReadSystemTime()
print_cgm_bg(now, r)
next_reading = (r.system_time - now + timedelta(minutes=5, seconds=2)).total_seconds()
if (next_reading > 0):
sleep_verbose(next_reading)
def since(when, rectype='EGV_DATA'):
return reversed(list(takewhile(lambda r: r.system_time > when, dr.iter_records(rectype))))
def parsetime(s):
return datetime.strptime(s, "%Y-%m-%dT%H:%M:%SZ")
def test():
now = dr.ReadSystemTime()
POST('/ping', toJSON(now))
import requests
rectype = 'EGV_DATA'
resp = requests.get(HOST + '/egv_data/1')
resp.raise_for_status()
rs = None
if len(resp.json()):
when = parsetime(resp.json()[0]['contents']['system_time'])
print when
rs = list(since(when, rectype))
else:
#rs = list(reversed(list(dr.iter_records(rectype))))
now = dr.ReadSystemTime()
when = now - timedelta(days=5)
rs = list(since(when, rectype))
print len(rs)
print POST('/egv_datas', toJSON(rs))
def test0():
now = dr.ReadSystemTime()
POST('/ping', toJSON(now))
for t in parseable_record_types():
rs = dr.ReadRecords(t, 1)
if not rs:
continue
r=rs[-1]
print toJSON([t,r])
class JSON_Time(json.JSONEncoder):
def default(self, o):
if isinstance(o, datetime):
if o.tzinfo is None:
from pytz import UTC
return o.replace(tzinfo=UTC).isoformat()
else:
return o.isoformat()
return json.JSONEncoder.default(self, o)
class JSON_CGM(JSON_Time):
def default(self, o):
if isinstance(o, EGVRecord) and o.is_special:
op={}
for k in o.BASE_FIELDS + ['glucose_special_meaning']:
op[k] = getattr(o, k)
return {'tag': 'BGE_Special', 'contents': op}
elif isinstance(o, GenericTimestampedRecord):
op={}
for k in o.BASE_FIELDS + o.FIELDS:
op[k] = getattr(o, k)
if isinstance(o, EGVRecord):
return {'tag': 'BGE_Normal', 'contents': op}
else:
return op
else:
return JSON_Time.default(self, o)
def toJSON(o):
return json.dumps(o, cls=JSON_CGM)
{"dump_everything": dump_everything,
"dump_cgm": dump_cgm,
"poll": poll,
"test": test,
}[command]()
|