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#!/usr/bin/env python
import sys, time
import whisper
from optparse import OptionParser
now = int( time.time() )
yesterday = now - (60 * 60 * 24)
option_parser = OptionParser(usage='''%prog [options] path''')
option_parser.add_option('--from', default=yesterday, type='int', dest='_from',
help=("Unix epoch time of the beginning of "
"your requested interval (default: 24 hours ago)"))
option_parser.add_option('--until', default=now, type='int',
help="Unix epoch time of the end of your requested interval (default: now)")
option_parser.add_option('--json', default=False, action='store_true',
help="Output results in JSON form")
option_parser.add_option('--pretty', default=False, action='store_true',
help="Show human-readable timestamps instead of unix times")
(options, args) = option_parser.parse_args()
if len(args) != 1:
option_parser.print_usage()
sys.exit(1)
path = args[0]
from_time = int( options._from )
until_time = int( options.until )
(timeInfo, values) = whisper.fetch(path, from_time, until_time)
(start,end,step) = timeInfo
if options.json:
values_json = str(values).replace('None','null')
print '''{
"start" : %d,
"end" : %d,
"step" : %d,
"values" : %s
}''' % (start,end,step,values_json)
sys.exit(0)
t = start
for value in values:
if options.pretty:
timestr = time.ctime(t)
else:
timestr = str(t)
if value is None:
valuestr = "None"
else:
valuestr = "%f" % value
print "%s\t%s" % (timestr,valuestr)
t += step
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