def __make_xml(self, channel_name, sample, type_info):
'''
Version 1.1 xml (first versioned version, can be parsed
by Device Cloud's initial "compact" version parser)
'''
upload_type = SettingsBase.get_setting(self, 'upload_type')
real = not SettingsBase.get_setting(self, 'legacy_time_format')
if upload_type:
frame = '<sample name="%s" value="%s" unit="%s" type="%s" '\
'timestamp="%s" />'
args = [_escape_entities(y) for y in \
[str(x) for x in (channel_name, sample.value,
sample.unit,
_type_str(type_info),
iso_date(sample.timestamp,
real_iso=real))]]
else:
frame = '<sample name="%s" value="%s" unit="%s" timestamp="%s" />'
args = [_escape_entities(y) for y in \
[str(x) for x in (channel_name, sample.value,
sample.unit,
iso_date(sample.timestamp,
real_iso=real))]]
return frame % tuple(args)
def __repr__(self):
if self.channel == None:
return "<%s record=%s (no channel)>" % (
self.__class__.__name__,
repr(self.record))
if getattr(self.channel, "perm_mask", None) == None:
return "<%s record=%s channel=%s (no permissions mask)>" % (
self.__class__.__name__,
repr(self.record),
self.channel.name())
perm_denied = not (self.channel.perm_mask() & PERM_GET)
if not perm_denied:
try:
return ("<%s record=%s channel=%s "
"sample.value=%s timestamp=%s>") % (
self.__class__.__name__,
repr(self.record),
self.channel.name(),
repr(self.channel.get().value),
iso_date(t=self.channel.get().timestamp))
except:
perm_denied = True
if perm_denied:
return "<%s record=%s channel=%s (get permission denied)>" % (
self.__class__.__name__,
repr(self.record),
self.channel.name())
def __repr__(self):
try:
return '<Sample: "%s" "%s" at "%s">' % (self.value, self.unit,
iso_date(self.timestamp))
except:
return '<Sample: "%s" "%s" at "%s">' % (self.value, self.unit,
self.timestamp)
def __make_compact_xml(self, channel_name, sample, type_info=None):
''' second DIA upload format (parsed by Device Cloud) '''
data = "<sample name=\"%s\" value=\"%s\" unit=\"%s\"" \
" timestamp=\"%s\" />"
return data % (channel_name, _escape_entities(
sample.value), sample.unit, iso_date(sample.timestamp))
def announce_device(self):
message_list = []
message = "Device %s now online at %s" % (self.__deviceid,
iso_date(digitime.time()))
message_list.append(message)
self.__transport_obj.send_message(message_list)
def announce_device(self):
message_list = []
message = "Device %s now online at %s" % (self.__deviceid,
iso_date(time.time()))
message_list.append(message)
self.__transport_obj.send_message(message_list)
def _marshal_sample(self, sample):
"""
Marshal a :class:`Sample` object for XML-RPC representation.
Returns a dictionary suitable for processing by the
:class:`SimpleXMLRPCRequestHandler` class.
This is an internal method which special-cases the attributes
of the :class:`Sample` object. Attributes on :class:`Sample`
objects are type-mapped for representation in the following
manner:
* The internal type :class:`Boolean` will be mapped to its
string value.
* All other values shall be mapped to their string representation
by calling the Python built-in :func:`repr` function.
"""
return_dict = { }
for member in filter(lambda m: not m.startswith('__'), dir(sample)):
# print 'xmlrpc member:', member
return_dict[member] = getattr(sample, member)
# attempt to marshall complex instance types to their string reps:
try:
if isinstance(return_dict[member], Boolean):
return_dict[member] = bool(return_dict[member])
elif type(return_dict[member]) == types.InstanceType:
return_dict[member] = repr(return_dict[member])
elif member == 'timestamp':
return_dict[member] = iso_date(sample.timestamp)
except:
return_dict[member] = "unrepresentable object"
return return_dict
def __make_xml(self, channel_name, sample):
"""
Converts a sample to XML. Returns String
Keyword arguments:
channel_name -- the name of the channel
sample -- the corresponding sample
"""
data = ["<sample>"]
data.append("<name>%s</name>" % channel_name)
data.append("<value>%s</value>" % \
self.__escape_entities(sample.value))
data.append("<unit>%s</unit>" % sample.unit)
data.append("<timestamp>%s</timestamp>" % iso_date(sample.timestamp))
try:
if isinstance(sample,AnnotatedSample):
# then add any annotated fields
if sample.errors:
data.append("<errors>%s</errors>" % str(sample.errors))
if sample.other:
data.append("<other>%s</other>" % str(sample.other))
except:
traceback.print_exc()
pass
data.append("</sample>")
return "".join(data)
def __repr__(self):
if self.channel == None:
return "<%s record=%s (no channel)>" % (self.__class__.__name__,
repr(self.record))
if getattr(self.channel, "perm_mask", None) == None:
return "<%s record=%s channel=%s (no permissions mask)>" % (
self.__class__.__name__, repr(
self.record), self.channel.name())
perm_denied = not (self.channel.perm_mask() & PERM_GET)
if not perm_denied:
try:
return ("<%s record=%s channel=%s "
"sample.value=%s timestamp=%s>") % (
self.__class__.__name__, repr(self.record),
self.channel.name(), repr(
self.channel.get().value),
iso_date(t=self.channel.get().timestamp))
except:
perm_denied = True
if perm_denied:
return "<%s record=%s channel=%s (get permission denied)>" % (
self.__class__.__name__, repr(
self.record), self.channel.name())
def post_process(self, rsp, delta_clock):
"""Change the value of the new channel with the linked channel one."""
self.__tracer.debug(pccc_util.show_bytes('pccc_rsp', rsp))
#if self.__tracer.debug():
# st = '> Poll(%s) rsp in %0.3f secs' % (self.get_name(), delta_clock)
# print_bytes( st, rsp )
# self.req = self._parent.mbus.cli_response_parse( rsp, self.req)
now = time.time()
now_st = iso_date(now)
data = pccc_util.getData_SlcProtectedTypesLogicalRead( rsp)
for parse in self.parse_list:
try:
sam = parse.process_read( data, now )
# self.__tracer.info('chn(%s) = %s', parse.get_name(),sam)
except:
self.__tracer.error('parse %s failed', parse.get_name())
self.__tracer.error(traceback.format_exc())
continue
self.__set_parse_channel( parse, sam)
self.__tracer.info(' chan:%s', str(parse.show_value(now_st)))
if self._stats_chan is not None:
if( delta_clock != 0):
# then delta_clock 0 means time.clock() roll-over
# update the CYCLE TIME stats
if( (self.attrib[ self.TIME_MIN] <= 0) or (self.attrib[ self.TIME_MIN] > delta_clock) ):
# then a NEW min_time
self.attrib.update({ self.TIME_MIN:delta_clock })
if( (self.attrib[ self.TIME_MAX] <= 0) or (self.attrib[ self.TIME_MAX] < delta_clock) ):
# then a NEW max_time
self.attrib.update({ self.TIME_MAX:delta_clock })
if( self.attrib[ self.TIME_AVG] <= 0):
# then first update of average
avg = delta_clock
else:
avg = self.attrib[ self.TIME_AVG] * self.TIME_AVG_RATIO
avg += delta_clock * (1.0 - self.TIME_AVG_RATIO)
self.attrib.update({ self.TIME_AVG:avg })
self.__tracer.info('poll(%s) reqs:%d rsp_min:%0.2f avg:%0.2f max:%0.2f (in secs)', \
self.attrib['name'], self.attrib[ self.REQ_CNT],\
self.attrib[ self.TIME_MIN], \
self.attrib[ self.TIME_AVG], self.attrib[ self.TIME_MAX] )
else: # some error occured
self.__tracer.error('clock roll-over')
return
def __show_records(self, records_list, results=None):
"""
Print or write into a file the record list.
"""
if results != None:
results.write('-' * 89 + '\r\n')
results.write('| Date' + 16 * ' ' + '| Event' + 10 * ' ' +
'| Channel' + 14 * ' ' + '| Value' + 9 * ' ' +
'| Units' + 3 * ' ' + '|\r\n')
results.write('-' * 89 + '\r\n')
for record in records_list:
ch_id = record.get_channel_id()
results.write('| ' + iso_date
(record.get_timestamp()).ljust(20)
[0:20] +
'| ' + str(EVENT_TYPE
[record.get_event_type()]).ljust(15)
[0:15] +
'| ' + str(self.__logger_cdb.get_channel_name
(ch_id)).ljust(21)
[0:21] +
'| ' + str(record.get_value()).ljust(14)
[0:14] +
'| ' + str(self.__logger_cdb.get_channel_units
(ch_id)).ljust(8)
[0:8] + '|\r\n')
results.write('-' * 89 + '\r\n')
else:
self.write('-' * 79 + '\r\n')
self.write('| Date' + 16 * ' ' + '| Event' + 10 * ' ' +
'| Channel' + 14 * ' ' + '| Value' + 9 * ' ' +
'|\r\n')
self.write('-' * 79 + '\r\n')
for record in records_list:
ch_id = record.get_channel_id()
self.write ('| ' + iso_date(record.get_timestamp()).ljust(20)
[0:20] + '| ' +
str(EVENT_TYPE[record.get_event_type()]).ljust(15)
[0:15] + '| ' +
str(self.__logger_cdb.get_channel_name
(ch_id)).ljust(21)
[0:21] + '| ' +
str(record.get_value()).ljust(14)
[0:14] + '|\r\n')
self.write('-' * 79 + '\r\n')
def __make_xml(self, channel_name, sample):
data = "<sample>"
data += "<name>%s</name>"
data += "<value>%s</value>"
data += "<unit>%s</unit>"
data += "<timestamp>%s</timestamp>"
data += "</sample>"
return data % (channel_name, self.__escape_entities(sample.value),
sample.unit, iso_date(sample.timestamp))
def __make_xml(self, channel_name, sample):
data = "<sample>"
data += "<name>%s</name>"
data += "<value>%s</value>"
data += "<unit>%s</unit>"
data += "<timestamp>%s</timestamp>"
data += "</sample>"
return data % (channel_name, self.__escape_entities(
sample.value), sample.unit, iso_date(sample.timestamp))
def __make_xml(self, channel_name, sample):
data = "<sample>"
data += "<name>%s</name>"
data += "<value>%s</value>"
data += "<unit>%s</unit>"
data += "<timestamp>%s</timestamp>"
data += "</sample>"
return data % (channel_name, self.__escape_entities(sample.value),
sample.unit, iso_date(sample.timestamp))
def __make_full_xml(self, channel_name, sample, type_info=None):
''' initial DIA upload format '''
data = "<sample>"
data += "<name>%s</name>"
data += "<value>%s</value>"
data += "<unit>%s</unit>"
data += "<timestamp>%s</timestamp>"
data += "</sample>"
return data % (channel_name, _escape_entities(
sample.value), sample.unit, iso_date(sample.timestamp))
def __make_compact_xml(self, channel_name, sample):
"""
Converts a sample to compact XML (using attributes instead of tags). Returns String
Keyword arguments:
channel_name -- the name of the channel
sample -- the corresponding sample
"""
data = "<sample name=\"%s\" value=\"%s\" unit=\"%s\" timestamp=\"%s\" />"
return data % (channel_name, self.__escape_entities(sample.value),
sample.unit, iso_date(sample.timestamp))
def __create_message(self, message_format, channel):
# Run through the message format string, substituting
# out any of the magic values, specifically:
# %c, %v, %u, %t, and %h
message = ""
escape = False
for i in message_format:
if escape == True and i == 'c':
message += channel.name()
escape = False
elif escape == True and i == 'v':
message += str(channel.get().value)
escape = False
elif escape == True and i == 'u':
message += str(channel.get().unit)
escape = False
elif escape == True and i == 't':
message += str(channel.get().timestamp)
escape = False
elif escape == True and i == 'h':
message += iso_date(channel.get().timestamp)
escape = False
elif i == '%':
# If we are already in escaped mode, then the previous
# escape was not used.
# Reinsert the previous escape into the stream, and keep
# ourselves in escape mode for the next character.
if escape == True:
message += '%'
escape = True
else:
# If we are in escaped mode, and we get an escape
# character that we don't recognize, make sure
# we put back the escape character into our stream.
if escape == True:
escape = False
message += '%'
message += i
# If user had the last character as an escape character,
# then we should reinsert said escape character into the
# stream, as it is unused for our parsing.
if escape == True:
message += '%'
return message
def __create_message(self, message_format, channel):
# Run through the message format string, substituting
# out any of the magic values, specifically:
# %c, %v, %u, %t, and %h
message = ""
escape = False
for i in message_format:
if escape == True and i == 'c':
message += channel.name()
escape = False
elif escape == True and i == 'v':
message += str(channel.get().value)
escape = False
elif escape == True and i == 'u':
message += str(channel.get().unit)
escape = False
elif escape == True and i == 't':
message += str(channel.get().timestamp)
escape = False
elif escape == True and i == 'h':
message += iso_date(channel.get().timestamp)
escape = False
elif i == '%':
# If we are already in escaped mode, then the previous
# escape was not used.
# Reinsert the previous escape into the stream, and keep
# ourselves in escape mode for the next character.
if escape == True:
message += '%'
escape = True
else:
# If we are in escaped mode, and we get an escape
# character that we don't recognize, make sure
# we put back the escape character into our stream.
if escape == True:
escape = False
message += '%'
message += i
# If user had the last character as an escape character,
# then we should reinsert said escape character into the
# stream, as it is unused for our parsing.
if escape == True:
message += '%'
return message
def __make_xml(self, channel_name, sample):
"""
Converts a sample to XML. Returns String
Keyword arguments:
channel_name -- the name of the channel
sample -- the corresponding sample
"""
data = "<sample>"
data += "<name>%s</name>"
data += "<value>%s</value>"
data += "<unit>%s</unit>"
data += "<timestamp>%s</timestamp>"
data += "</sample>"
return data % (channel_name, self.__escape_entities(sample.value),
sample.unit, iso_date(sample.timestamp))
def __make_xml(self, channel_name, sample):
"""
Converts a sample to XML. Returns String
Keyword arguments:
channel_name -- the name of the channel
sample -- the corresponding sample
"""
data = "<sample>"
data += "<name>%s</name>"
data += "<value>%s</value>"
data += "<unit>%s</unit>"
data += "<timestamp>%s</timestamp>"
data += "</sample>"
return data % (channel_name, self.__escape_entities(sample.value),
sample.unit, iso_date(sample.timestamp))
def __upload_data(self):
"""
Builds XML string of the channel state and pushes to iDigi
"""
data = self.__cache.lock_cache()
# print 'data = (%s)' % str(data)
if data is None:
# then was left unlocked
print "idigi_db(%s): sample cache is empty" % self.__name
# self.__cache.unlock_cache()
return None
print "idigi_db: Uploading to iDigi"
xml = cStringIO.StringIO()
xml.write("<?xml version=\"1.0\"?>")
if SettingsBase.get_setting(self, "compact_xml"):
xml.write("<idigi_data compact=\"True\">")
else:
xml.write("<idigi_data>")
xml.write(data)
xml.write("</idigi_data>")
self.__last_upload_time = time.time()
self.statistics['upload_tries'] += 1
success = self.__send_to_idigi(xml.getvalue())
if success:
# if successful, delete upload list else try again next time
# self.__cache_upload = []
self.statistics['upload_good'] += 1
self.statistics.update({'last_upload':iso_date()})
self.__cache.free_cache()
else:
# failed, try again next time
self.__cache.unlock_cache()
xml.close()
self.save_statistics()
return
def do_channel_get(self, arg):
try:
args = parse_line(arg)
except:
self.write("invalid syntax.\r\n")
return 0
if len(args) != 1:
self.write("invalid argument(s) specified.\r\n")
self.do_help("channel_get")
return 0
channel_name = args[0]
if not self.__cdb.channel_exists(channel_name):
self.write("unknown channel '%s'\r\n" % (channel_name))
return 0
channel = self.__cdb.channel_get(channel_name)
value = "(value unavailable)"
unit = "(unit unavailable)"
time_str = "(time unavailable)"
try:
sample = channel.get()
value = str(sample.value)
unit = sample.unit
time_str = iso_date(sample.timestamp)
except:
pass
if '\n' in value:
value = value.replace('\n', '\r\n')
value = '\r\n' + value
self.write("\t%s: %s (%s) @ %s\r\n" %
(channel_name, value, unit, time_str))
return 0
def do_channel_get(self, arg):
try:
args = parse_line(arg)
except:
self.write("invalid syntax.\r\n")
return 0
if len(args) != 1:
self.write("invalid argument(s) specified.\r\n")
self.do_help("channel_get")
return 0
channel_name = args[0]
if not self.__cdb.channel_exists(channel_name):
self.write("unknown channel '%s'\r\n" % (channel_name))
return 0
channel = self.__cdb.channel_get(channel_name)
value = "(value unavailable)"
unit = "(unit unavailable)"
time_str = "(time unavailable)"
try:
sample = channel.get()
value = str(sample.value)
unit = sample.unit
time_str = iso_date(sample.timestamp)
except:
pass
if '\n' in value:
value = value.replace('\n','\r\n')
value = '\r\n' + value
self.write("\t%s: %s (%s) @ %s\r\n" %
(channel_name, value, unit, time_str))
return 0
def __repr__(self):
return '<AnnotatedSample: "%s" "%s" "%s" "%s" at "%s">' % \
(self.value, self.unit, self.errors, self.other,
iso_date(self.timestamp))
self.write("unable to set: %s\r\n" % (str(e)))
self.__tracer.error("unable to set: %s", str(e))
self.__tracer.debug(traceback.format_exc())
return 0
value = "(value unavailable)"
unit = "(unit unavailable)"
time_str = "(time unavailable)"
try:
sample = channel.get()
value = str(sample.value)
if '\n' in value:
value = value.replace('\n', '\r\n')
value = '\r\n' + value
unit = sample.unit
time_str = iso_date(sample.timestamp)
except:
pass
self.write("\t%s: %s (%s) @ %s\r\n" %
(channel_name, value, unit, time_str))
return 0
def complete_channel_set(self, text, line, begidx, endidx):
matches = []
arg_num = 1
sio = StringIO(line)
shlexer = shlex.shlex(sio)
arg_num = 1
while 1:
def __make_compact_xml(self, channel_name, sample):
data = "<sample name=\"%s\" value=\"%s\" unit=\"%s\" timestamp=\"%s\" />"
return data % (channel_name, self.__escape_entities(sample.value),
sample.unit, iso_date(sample.timestamp))
def sample_indication(self, buf, addr):
self.upCount += 1
if self.upCount < 30:
return
else:
self.upCount == 0
self.property_set("last_com", Sample(time.time(), value=iso_date(self.current_time_get()), unit=""))
excl = self.property_get("excl").value
if excl:
self.property_set("excl", Sample(0, value=Boolean(bool(0), style=STYLE_ONOFF)))
# Parse the I/O sample:
extended_address = SettingsBase.get_setting(self, "extended_address")
try:
db = self.__xbee_manager.xbee_device_ddo_get_param(extended_address,
"DB", use_cache=True)
# sv = self.__xbee_manager.xbee_device_ddo_get_param(extended_address,
# "%V", use_cache=True)
try:
dd = struct.unpack(">B", db)
#print dd
except:
self.property_set("signal", Sample(0, value="0", unit=""))
print "failed 4"
# try:
# sv = struct.unpack(">H", sv)
# except:
# self.property_set("volts", Sample(0, value="failed", unit=""))
# print sv
dd = str(dd)
dd = dd[1:3]
dd = "-" + dd + " dB"
# print "signal strength ="
# print dd
self.property_set("signal", Sample(0, value=str(dd), unit=""))
# sv = str(sv)
# sv = sv[1:5]
# sv = int(sv)
# print sv
# volts = (sv * 1.1719) / 1000
# print "volts ="
# print volts
# self.property_set("volts", Sample(0, value=str(volts), unit=""))
except:
self.property_set("signal", Sample(0, value="0", unit=""))
print "failed to get signal and voltage"
io_sample = parse_is(buf)
# Calculate channel values:
light_mv, temperature_mv = \
map(lambda cn: sample_to_mv(io_sample[cn]), ("AD1", "AD2"))
light = round(light_mv)
temperature = round((((temperature_mv - 500.0) / 10.0 - 4.0)) * 1.8 + 32, 2)
# Update channels:
self.property_set("light", Sample(0, light, "brightness"))
self.property_set("temperature", Sample(0, temperature, self.include_unit))
def format_logging_events_iterator(log_event_iterator):
"""
Format a plain ASCII table, given a logging event iterator.
Such iterators can be seen in channels/channel_database_interface.py.
In order to conserve memory, this formatter operates as an iterator and
returns a single line of text at a time.
"""
log_event_type_map = {
LoggingEventNewSample: "Sample",
LoggingEventChannelNew: "Channel+",
LoggingEventChannelRemove: "Channel-",
LoggingEventMeta: "Meta",
}
headings = (
("Record #", len(repr(sys.maxint))),
("Type", max(map(lambda s: len(s), log_event_type_map.values()))),
("Channel Name", 24),
("Sample Val.", len(repr(sys.maxint))),
("Timestamp", 19),
)
# Table header
header_top = ""
header_bot = ""
field_fmt = ""
for field in headings:
header_top += ' '
header_top += field[0].ljust(field[1])[:field[1]]
header_bot += ' '
header_bot += '-' * field[1]
field_fmt += ' '
field_fmt += '%-' + str(field[1]) + '.' + str(field[1]) + 's'
yield header_top
yield header_bot
for log_event in log_event_iterator:
line = ""
if log_event.channel is None:
if isinstance(log_event, LoggingEventMeta):
line = field_fmt % (
"%d" % log_event.record,
log_event_type_map[log_event.__class__],
log_event.description,
"N/A",
"N/A")
else:
# unsupported LoggingEvent
line = field_fmt % (
"-1",
"Unknown",
"N/A",
"Unknown event type: %s" % log_event.__class__.__name__,
"N/A")
elif log_event.channel.perm_mask() & PERM_GET:
line = field_fmt % (
"%d" % log_event.record,
log_event_type_map[log_event.__class__],
log_event.channel.name(),
repr(log_event.channel.get().value),
iso_date(log_event.channel.get().timestamp))
else:
line = field_fmt % (
"%d" % log_event.record,
log_event_type_map[log_event.__class__],
log_event.channel.name(),
"(N/A)",
iso_date(log_event.channel.get().timestamp))
yield line
self.write("unable to set: %s\r\n" % (str(e)))
self.__tracer.error("unable to set: %s", str(e))
self.__tracer.debug(traceback.format_exc())
return 0
value = "(value unavailable)"
unit = "(unit unavailable)"
time_str = "(time unavailable)"
try:
sample = channel.get()
value = sample.value
if '\n' in value:
value = value.replace('\n','\r\n')
value = '\r\n' + value
unit = sample.unit
time_str = iso_date(sample.timestamp)
except:
pass
self.write("\t%s: %s (%s) @ %s\r\n" %
(channel_name, value, unit, time_str))
return 0
def complete_channel_set(self, text, line, begidx, endidx):
matches = []
arg_num = 1
sio = StringIO(line)
shlexer = shlex.shlex(sio)
arg_num = 1
def __make_compact_xml(self, channel_name, sample):
data = "<sample name=\"%s\" value=\"%s\" unit=\"%s\" timestamp=\"%s\" />"
return data % (channel_name, self.__escape_entities(
sample.value), sample.unit, iso_date(sample.timestamp))
def run(self):
"""run when our device driver thread is started"""
while 1:
if self.__stopevent.isSet():
self.__stopevent.clear()
break
# confirm we have a valid EIP_ENCAP session
if not self.eipc.isOpen():
self._tracer.info("Try to open EIP Encap Session to %s:%d", \
self.eipc.getIp(), self.eipc.getPort())
if( self.eipc.OpenSession({}) == 0):
# then error, clean up garbage, sleep to retry
self._tracer.warning("EIP RegSes failed! Retry in 1 minute.")
gc.collect()
time.sleep(60.0)
continue
if not self.eipc.ping():
self._tracer.warning("EIP Session closed - will retry to open.")
time.sleep(5.0)
continue
self.time_start = time.time()
self.attrib.update({ 'error':False })
# self.time_tup = time.localtime(self.time_start)
self._tracer.debug('Cyclic Process at %s',
iso_date(self.time_start))
# we only update occassionally - don't do for every poll item
self.round_floats = SettingsBase.get_setting(self, self.FP_ROUND)
for poll in self.poll_list:
# issue each poll
# poll.show_value( ' >>%s', True)
self.send_poll( poll)
# self._tracer.info('poll_stats', poll.attrib)
# save end of cycle - how long the process took
self.time_end = time.time()
# handle the global detect error in at least 1 block
self.__update_stats_channel()
rate = SettingsBase.get_setting(self, self.POLL_MINUTE)
if( rate == 0):
# then use the older cycle design, not clean-minute design
real_rate = SettingsBase.get_setting(self, self.POLL_RATE)
else:
# else we use the 'clean minutes' algorithm
real_rate = sleep_aids.secs_until_next_minute_period(
rate, time.gmtime(self.time_end))
if real_rate < self.POLL_MIN:
real_rate = self.POLL_MIN
time.sleep(real_rate)
# stopping - clean up
try:
self.sock.close()
except:
pass
self.sock = None
for poll in self.poll_list:
poll.clear_links()
self.poll_list = None
return
def format_logging_events_iterator(log_event_iterator):
"""
Format a plain ASCII table, given a logging event iterator.
Such iterators can be seen in channels/channel_database_interface.py.
In order to conserve memory, this formatter operates as an iterator and
returns a single line of text at a time.
"""
log_event_type_map = {
LoggingEventNewSample: "Sample",
LoggingEventChannelNew: "Channel+",
LoggingEventChannelRemove: "Channel-",
LoggingEventMeta: "Meta",
}
headings = (
("Record #", len(repr(sys.maxint))),
("Type", max(map(lambda s: len(s), log_event_type_map.values()))),
("Channel Name", 24),
("Sample Val.", len(repr(sys.maxint))),
("Timestamp", 19),
)
# Table header
header_top = ""
header_bot = ""
field_fmt = ""
for field in headings:
header_top += ' '
header_top += field[0].ljust(field[1])[:field[1]]
header_bot += ' '
header_bot += '-' * field[1]
field_fmt += ' '
field_fmt += '%-' + str(field[1]) + '.' + str(field[1]) + 's'
yield header_top
yield header_bot
for log_event in log_event_iterator:
line = ""
if log_event.channel is None:
if isinstance(log_event, LoggingEventMeta):
line = field_fmt % (
"%d" % log_event.record,
log_event_type_map[log_event.__class__],
log_event.description,
"N/A",
"N/A")
else:
# unsupported LoggingEvent
line = field_fmt % (
"-1",
"Unknown",
"N/A",
"Unknown event type: %s" % log_event.__class__.__name__,
"N/A")
elif log_event.channel.perm_mask() & PERM_GET:
line = field_fmt % (
"%d" % log_event.record,
log_event_type_map[log_event.__class__],
log_event.channel.name(),
repr(log_event.channel.get().value),
iso_date(log_event.channel.get().timestamp))
else:
line = field_fmt % (
"%d" % log_event.record,
log_event_type_map[log_event.__class__],
log_event.channel.name(),
"(N/A)",
iso_date(log_event.channel.get().timestamp))
yield line