class SLClient(object):
"""
Basic class to create and use a connection to a SeedLink server using a
SeedLinkConnection object.
A new SeedLink application can be created by sub-classing SLClient and
overriding at least the packetHandler method of SLClient.
:var slconn: SeedLinkConnection object for communicating with the
SeedLinkConnection over a socket.
:type slconn: SeedLinkConnection
:var verbose: Verbosity level, 0 is lowest.
:type verbose: int
:var ppackets: Flag to indicate show detailed packet information.
:type ppackets: boolean
:var streamfile: Name of file containing stream list for multi-station
mode.
:type streamfile: str
:var selectors: Selectors for uni-station or default selectors for
multi-station.
:type selectors: str
:var multiselect: Selectors for multi-station.
:type multiselect: str
:var statefile: Name of file for reading (if exists) and storing state.
:type statefile: str
:var begin_time: Beginning of time window for read start in past.
:type begin_time :str
:var end_time: End of time window for reading windowed data.
:type end_time: str
:var infolevel: INFO LEVEL for info request only.
:type infolevel: str
"""
VERSION = "1.2.0X00"
VERSION_YEAR = "2011"
VERSION_DATE = "24Nov" + VERSION_YEAR
COPYRIGHT_YEAR = VERSION_YEAR
PROGRAM_NAME = "SLClient v" + VERSION
VERSION_INFO = PROGRAM_NAME + " (" + VERSION_DATE + ")"
BANNER = ["SLClient comes with ABSOLUTELY NO WARRANTY"]
def __init__(self, loglevel='DEBUG'):
"""
Creates a new instance of SLClient with the specified logging object
"""
numeric_level = getattr(logging, loglevel.upper(), None)
if not isinstance(numeric_level, int):
raise ValueError('Invalid log level: %s' % loglevel)
logging.basicConfig(level=numeric_level)
self.slconn = None
self.verbose = 0
self.ppackets = False
self.streamfile = None
self.selectors = None
self.multiselect = None
self.statefile = None
self.begin_time = None
self.end_time = None
self.infolevel = None
## for-while
for line in SLClient.BANNER:
print line
self.slconn = SeedLinkConnection()
def parseCmdLineArgs(self, args):
"""
Parses the commmand line arguments.
:type args: list
:param args: main method arguments.
:return: -1 on error, 1 if version or help argument found, 0 otherwise.
"""
if len(args) < 2:
self.printUsage(False)
return 1
optind = 1
while optind < len(args):
if args[optind] == "-V":
print(self.VERSION_INFO, sys.stderr)
return 1
elif args[optind] == "-h":
self.printUsage(False)
return 1
elif args[optind].startswith("-v"):
self.verbose += len(args[optind]) - 1
elif args[optind] == "-p":
self.ppackets = True
elif args[optind] == "-nt":
optind += 1
self.slconn.setNetTimout(int(args[optind]))
elif args[optind] == "-nd":
optind += 1
self.slconn.setNetDelay(int(args[optind]))
elif args[optind] == "-k":
optind += 1
self.slconn.setKeepAlive(int(args[optind]))
elif args[optind] == "-l":
optind += 1
self.streamfile = args[optind]
elif args[optind] == "-s":
optind += 1
self.selectors = args[optind]
elif args[optind] == "-S":
optind += 1
self.multiselect = args[optind]
elif args[optind] == "-x":
optind += 1
self.statefile = args[optind]
elif args[optind] == "-t":
optind += 1
self.begin_time = args[optind]
elif args[optind] == "-e":
optind += 1
self.end_time = args[optind]
elif args[optind] == "-i":
optind += 1
self.infolevel = args[optind]
elif args[optind].startswith("-"):
print("Unknown option: " + args[optind], sys.stderr)
return -1
elif self.slconn.getSLAddress() is None:
self.slconn.setSLAddress(args[optind])
else:
print("Unknown option: " + args[optind], sys.stderr)
return -1
optind += 1
return 0
def initialize(self):
"""
Initializes this SLClient.
"""
if self.slconn.getSLAddress() is None:
message = "no SeedLink server specified"
raise SeedLinkException(message)
if self.verbose >= 2:
self.ppackets = True
if self.slconn.getSLAddress().startswith(":"):
self.slconn.setSLAddress("127.0.0.1" + self.slconn.getSLAddress())
if self.streamfile is not None:
self.slconn.readStreamList(self.streamfile, self.selectors)
if self.multiselect is not None:
self.slconn.parseStreamlist(self.multiselect, self.selectors)
else:
if self.streamfile is None:
self.slconn.setUniParams(self.selectors, -1, None)
if self.statefile is not None:
self.slconn.setStateFile(self.statefile)
else:
if self.begin_time is not None:
self.slconn.setBeginTime(self.begin_time)
if self.end_time is not None:
self.slconn.setEndTime(self.end_time)
def run(self):
"""
Start this SLClient.
"""
if self.infolevel is not None:
self.slconn.requestInfo(self.infolevel)
# Loop with the connection manager
count = 1
slpack = self.slconn.collect()
while slpack is not None:
if (slpack == SLPacket.SLTERMINATE):
break
try:
# do something with packet
terminate = self.packetHandler(count, slpack)
if terminate:
break
except SeedLinkException as sle:
print(self.__class__.__name__ + ": " + sle.value)
if count >= sys.maxint:
count = 1
print "DEBUG INFO: " + self.__class__.__name__ + ":",
print "Packet count reset to 1"
else:
count += 1
slpack = self.slconn.collect()
# Close the SeedLinkConnection
self.slconn.close()
def packetHandler(self, count, slpack):
"""
Processes each packet received from the SeedLinkConnection.
This method should be overridden when sub-classing SLClient.
:type count: int
:param count: Packet counter.
:type slpack: :class:`~obspy.seedlink.SLPacket`
:param slpack: packet to process.
:return: Boolean true if connection to SeedLink server should be
closed and session terminated, false otherwise.
"""
# check if not a complete packet
if slpack is None or (slpack == SLPacket.SLNOPACKET) or \
(slpack == SLPacket.SLERROR):
return False
# get basic packet info
seqnum = slpack.getSequenceNumber()
type = slpack.getType()
# process INFO packets here
if (type == SLPacket.TYPE_SLINF):
return False
if (type == SLPacket.TYPE_SLINFT):
print "Complete INFO:\n" + self.slconn.getInfoString()
if self.infolevel is not None:
return True
else:
return False
# can send an in-line INFO request here
try:
#if (count % 100 == 0 and not self.slconn.state.expect_info):
if (count % 100 == 0):
infostr = "ID"
self.slconn.requestInfo(infostr)
except SeedLinkException as sle:
print(self.__class__.__name__ + ": " + sle.value)
# if here, must be a data blockette
print self.__class__.__name__ + ": packet seqnum:",
print str(seqnum) + ": blockette type: " + str(type)
if not self.ppackets:
return False
# process packet data
trace = slpack.getTrace()
if trace is not None:
print self.__class__.__name__ + ": blockette contains a trace: "
print trace.id, trace.stats['starttime'],
print " dt:" + str(1.0 / trace.stats['sampling_rate']),
print " npts:" + str(trace.stats['npts']),
print " sampletype:" + str(trace.stats['sampletype']),
print " dataquality:" + str(trace.stats['dataquality'])
if self.verbose >= 3:
print self.__class__.__name__ + ":"
print "blockette contains a trace: " + str(trace.stats)
else:
print self.__class__.__name__ + ": blockette contains no trace"
return False
def printUsage(self, concise):
"""
Prints the usage message for this class.
"""
print("\nUsage: python %s [options] <[host]:port>" % \
(self.__class__.__name__))
if concise:
print("Use '-h' for detailed help")
return
print
print(" ## General program options ##")
print(" -V report program version")
print(" -h show this usage message")
print(" -v be more verbose, multiple flags can be used")
print(" -p print details of data packets")
print(" -nd delay network re-connect delay (seconds), default 30")
print(
" -nt timeout network timeout (seconds), re-establish connection if no"
)
print(
" data/keepalives are received in this time, default 600"
)
print(
" -k interval send keepalive (heartbeat) packets this often (seconds)"
)
print(
" -x statefile save/restore stream state information to this file"
)
print(
" -t begintime sets a beginning time for the initiation of data transmission (year,month,day,hour,minute,second)"
)
print(
" -e endtime sets an end time for windowed data transmission (year,month,day,hour,minute,second)"
)
print(
" -i infolevel request this INFO level, write response to std out, and exit "
)
print(
" infolevel is one of: ID, STATIONS, STREAMS, GAPS, CONNECTIONS, ALL "
)
print
print(" ## Data stream selection ##")
print(
" -l listfile read a stream list from this file for multi-station mode"
)
print(
" -s selectors selectors for uni-station or default for multi-station"
)
print(
" -S streams select streams for multi-station (requires SeedLink >= 2.5)"
)
print(" 'streams' = 'stream1[:selectors1],stream2[:selectors2],...'")
print(" 'stream' is in NET_STA format, for example:")
print(" -S \"IU_KONO:BHE BHN,GE_WLF,MN_AQU:HH?.D\"")
print("")
print(
" <[host]:port> Address of the SeedLink server in host:port format"
)
print(
" if host is omitted (i.e. ':18000'), localhost is assumed"
)
@classmethod
def main(cls, args):
"""
Main method - creates and runs an SLClient using the specified
command line arguments
"""
slClient = None
try:
slClient = SLClient()
rval = slClient.parseCmdLineArgs(args)
if (rval != 0):
sys.exit(rval)
slClient.initialize()
slClient.run()
except Exception as e:
logger.critical(e)
traceback.print_exc()
class SLClient(object):
"""
Basic class to create and use a connection to a SeedLink server using a
SeedLinkConnection object.
A new SeedLink application can be created by sub-classing SLClient and
overriding at least the packetHandler method of SLClient.
:var slconn: SeedLinkConnection object for communicating with the
SeedLinkConnection over a socket.
:type slconn: SeedLinkConnection
:var verbose: Verbosity level, 0 is lowest.
:type verbose: int
:var ppackets: Flag to indicate show detailed packet information.
:type ppackets: boolean
:var streamfile: Name of file containing stream list for multi-station
mode.
:type streamfile: str
:var selectors: Selectors for uni-station or default selectors for
multi-station.
:type selectors: str
:var multiselect: Selectors for multi-station.
:type multiselect: str
:var statefile: Name of file for reading (if exists) and storing state.
:type statefile: str
:var begin_time: Beginning of time window for read start in past.
:type begin_time :str
:var end_time: End of time window for reading windowed data.
:type end_time: str
:var infolevel: INFO LEVEL for info request only.
:type infolevel: str
"""
VERSION = "1.2.0X00"
VERSION_YEAR = "2011"
VERSION_DATE = "24Nov" + VERSION_YEAR
COPYRIGHT_YEAR = VERSION_YEAR
PROGRAM_NAME = "SLClient v" + VERSION
VERSION_INFO = PROGRAM_NAME + " (" + VERSION_DATE + ")"
BANNER = ["SLClient comes with ABSOLUTELY NO WARRANTY"]
def __init__(self, loglevel='DEBUG'):
"""
Creates a new instance of SLClient with the specified logging object
"""
numeric_level = getattr(logging, loglevel.upper(), None)
if not isinstance(numeric_level, int):
raise ValueError('Invalid log level: %s' % loglevel)
logging.basicConfig(level=numeric_level)
self.slconn = None
self.verbose = 0
self.ppackets = False
self.streamfile = None
self.selectors = None
self.multiselect = None
self.statefile = None
self.begin_time = None
self.end_time = None
self.infolevel = None
## for-while
for line in SLClient.BANNER:
print line
self.slconn = SeedLinkConnection()
def parseCmdLineArgs(self, args):
"""
Parses the commmand line arguments.
:type args: list
:param args: main method arguments.
:return: -1 on error, 1 if version or help argument found, 0 otherwise.
"""
if len(args) < 2:
self.printUsage(False)
return 1
optind = 1
while optind < len(args):
if args[optind] == "-V":
print(self.VERSION_INFO, sys.stderr)
return 1
elif args[optind] == "-h":
self.printUsage(False)
return 1
elif args[optind].startswith("-v"):
self.verbose += len(args[optind]) - 1
elif args[optind] == "-p":
self.ppackets = True
elif args[optind] == "-nt":
optind += 1
self.slconn.setNetTimout(int(args[optind]))
elif args[optind] == "-nd":
optind += 1
self.slconn.setNetDelay(int(args[optind]))
elif args[optind] == "-k":
optind += 1
self.slconn.setKeepAlive(int(args[optind]))
elif args[optind] == "-l":
optind += 1
self.streamfile = args[optind]
elif args[optind] == "-s":
optind += 1
self.selectors = args[optind]
elif args[optind] == "-S":
optind += 1
self.multiselect = args[optind]
elif args[optind] == "-x":
optind += 1
self.statefile = args[optind]
elif args[optind] == "-t":
optind += 1
self.begin_time = args[optind]
elif args[optind] == "-e":
optind += 1
self.end_time = args[optind]
elif args[optind] == "-i":
optind += 1
self.infolevel = args[optind]
elif args[optind].startswith("-"):
print("Unknown option: " + args[optind], sys.stderr)
return -1
elif self.slconn.getSLAddress() is None:
self.slconn.setSLAddress(args[optind])
else:
print("Unknown option: " + args[optind], sys.stderr)
return -1
optind += 1
return 0
def initialize(self):
"""
Initializes this SLClient.
"""
if self.slconn.getSLAddress() is None:
message = "no SeedLink server specified"
raise SeedLinkException(message)
if self.verbose >= 2:
self.ppackets = True
if self.slconn.getSLAddress().startswith(":"):
self.slconn.setSLAddress("127.0.0.1" + self.slconn.getSLAddress())
if self.streamfile is not None:
self.slconn.readStreamList(self.streamfile, self.selectors)
if self.multiselect is not None:
self.slconn.parseStreamlist(self.multiselect, self.selectors)
else:
if self.streamfile is None:
self.slconn.setUniParams(self.selectors, -1, None)
if self.statefile is not None:
self.slconn.setStateFile(self.statefile)
else:
if self.begin_time is not None:
self.slconn.setBeginTime(self.begin_time)
if self.end_time is not None:
self.slconn.setEndTime(self.end_time)
def run(self):
"""
Start this SLClient.
"""
if self.infolevel is not None:
self.slconn.requestInfo(self.infolevel)
# Loop with the connection manager
count = 1
slpack = self.slconn.collect()
while slpack is not None:
if (slpack == SLPacket.SLTERMINATE):
break
try:
# do something with packet
terminate = self.packetHandler(count, slpack)
if terminate:
break
except SeedLinkException as sle:
print(self.__class__.__name__ + ": " + sle.value)
if count >= sys.maxint:
count = 1
print "DEBUG INFO: " + self.__class__.__name__ + ":",
print "Packet count reset to 1"
else:
count += 1
slpack = self.slconn.collect()
# Close the SeedLinkConnection
self.slconn.close()
def packetHandler(self, count, slpack):
"""
Processes each packet received from the SeedLinkConnection.
This method should be overridden when sub-classing SLClient.
:type count: int
:param count: Packet counter.
:type slpack: :class:`~obspy.seedlink.SLPacket`
:param slpack: packet to process.
:return: Boolean true if connection to SeedLink server should be
closed and session terminated, false otherwise.
"""
# check if not a complete packet
if slpack is None or (slpack == SLPacket.SLNOPACKET) or \
(slpack == SLPacket.SLERROR):
return False
# get basic packet info
seqnum = slpack.getSequenceNumber()
type = slpack.getType()
# process INFO packets here
if (type == SLPacket.TYPE_SLINF):
return False
if (type == SLPacket.TYPE_SLINFT):
print "Complete INFO:\n" + self.slconn.getInfoString()
if self.infolevel is not None:
return True
else:
return False
# can send an in-line INFO request here
try:
#if (count % 100 == 0 and not self.slconn.state.expect_info):
if (count % 100 == 0):
infostr = "ID"
self.slconn.requestInfo(infostr)
except SeedLinkException as sle:
print(self.__class__.__name__ + ": " + sle.value)
# if here, must be a data blockette
print self.__class__.__name__ + ": packet seqnum:",
print str(seqnum) + ": blockette type: " + str(type)
if not self.ppackets:
return False
# process packet data
trace = slpack.getTrace()
if trace is not None:
print self.__class__.__name__ + ": blockette contains a trace: "
print trace.id, trace.stats['starttime'],
print " dt:" + str(1.0 / trace.stats['sampling_rate']),
print " npts:" + str(trace.stats['npts']),
print " sampletype:" + str(trace.stats['sampletype']),
print " dataquality:" + str(trace.stats['dataquality'])
if self.verbose >= 3:
print self.__class__.__name__ + ":"
print "blockette contains a trace: " + str(trace.stats)
else:
print self.__class__.__name__ + ": blockette contains no trace"
return False
def printUsage(self, concise=True):
"""
Prints the usage message for this class.
"""
print("\nUsage: python %s [options] <[host]:port>" % \
(self.__class__.__name__))
if concise:
usage = "Use '-h' for detailed help"
else:
usage = USAGE
print(usage)
@classmethod
def main(cls, args):
"""
Main method - creates and runs an SLClient using the specified
command line arguments
"""
slClient = None
try:
slClient = SLClient()
rval = slClient.parseCmdLineArgs(args)
if (rval != 0):
sys.exit(rval)
slClient.initialize()
slClient.run()
except Exception as e:
logger.critical(e)
traceback.print_exc()
class SLClient(object):
"""
Basic class to create and use a connection to a SeedLink server using a
SeedLinkConnection object.
A new SeedLink application can be created by sub-classing SLClient and
overriding at least the packetHandler method of SLClient.
:var slconn: SeedLinkConnection object for communicating with the
SeedLinkConnection over a socket.
:type slconn: SeedLinkConnection
:var verbose: Verbosity level, 0 is lowest.
:type verbose: int
:var ppackets: Flag to indicate show detailed packet information.
:type ppackets: boolean
:var streamfile: Name of file containing stream list for multi-station
mode.
:type streamfile: str
:var selectors: Selectors for uni-station or default selectors for
multi-station.
:type selectors: str
:var multiselect: Selectors for multi-station.
:type multiselect: str
:var statefile: Name of file for reading (if exists) and storing state.
:type statefile: str
:var begin_time: Beginning of time window for read start in past.
:type begin_time :str
:var end_time: End of time window for reading windowed data.
:type end_time: str
:var infolevel: INFO LEVEL for info request only.
:type infolevel: str
"""
VERSION = "1.2.0X00"
VERSION_YEAR = "2011"
VERSION_DATE = "24Nov" + VERSION_YEAR
COPYRIGHT_YEAR = VERSION_YEAR
PROGRAM_NAME = "SLClient v" + VERSION
VERSION_INFO = PROGRAM_NAME + " (" + VERSION_DATE + ")"
def __init__(self, loglevel='DEBUG'):
"""
Creates a new instance of SLClient with the specified logging object
"""
numeric_level = getattr(logging, loglevel.upper(), None)
if not isinstance(numeric_level, int):
raise ValueError('Invalid log level: %s' % loglevel)
logging.basicConfig(level=numeric_level)
self.slconn = None
self.verbose = 0
self.ppackets = False
self.streamfile = None
self.selectors = None
self.multiselect = None
self.statefile = None
self.begin_time = None
self.end_time = None
self.infolevel = None
self.slconn = SeedLinkConnection()
def parseCmdLineArgs(self, args):
"""
Parses the commmand line arguments.
:type args: list
:param args: main method arguments.
:return: -1 on error, 1 if version or help argument found, 0 otherwise.
"""
if len(args) < 2:
self.printUsage(False)
return 1
optind = 1
while optind < len(args):
if args[optind] == "-V":
print(self.VERSION_INFO, sys.stderr)
return 1
elif args[optind] == "-h":
self.printUsage(False)
return 1
elif args[optind].startswith("-v"):
self.verbose += len(args[optind]) - 1
elif args[optind] == "-p":
self.ppackets = True
elif args[optind] == "-nt":
optind += 1
self.slconn.setNetTimout(int(args[optind]))
elif args[optind] == "-nd":
optind += 1
self.slconn.setNetDelay(int(args[optind]))
elif args[optind] == "-k":
optind += 1
self.slconn.setKeepAlive(int(args[optind]))
elif args[optind] == "-l":
optind += 1
self.streamfile = args[optind]
elif args[optind] == "-s":
optind += 1
self.selectors = args[optind]
elif args[optind] == "-S":
optind += 1
self.multiselect = args[optind]
elif args[optind] == "-x":
optind += 1
self.statefile = args[optind]
elif args[optind] == "-t":
optind += 1
self.begin_time = args[optind]
elif args[optind] == "-e":
optind += 1
self.end_time = args[optind]
elif args[optind] == "-i":
optind += 1
self.infolevel = args[optind]
elif args[optind].startswith("-"):
print("Unknown option: " + args[optind], sys.stderr)
return -1
elif self.slconn.getSLAddress() is None:
self.slconn.setSLAddress(args[optind])
else:
print("Unknown option: " + args[optind], sys.stderr)
return -1
optind += 1
return 0
def initialize(self):
"""
Initializes this SLClient.
"""
if self.slconn.getSLAddress() is None:
message = "no SeedLink server specified"
raise SeedLinkException(message)
if self.verbose >= 2:
self.ppackets = True
if self.slconn.getSLAddress().startswith(":"):
self.slconn.setSLAddress("127.0.0.1" + self.slconn.getSLAddress())
if self.streamfile is not None:
self.slconn.readStreamList(self.streamfile, self.selectors)
if self.multiselect is not None:
self.slconn.parseStreamlist(self.multiselect, self.selectors)
else:
if self.streamfile is None:
self.slconn.setUniParams(self.selectors, -1, None)
if self.statefile is not None:
self.slconn.setStateFile(self.statefile)
else:
if self.begin_time is not None:
self.slconn.setBeginTime(self.begin_time)
if self.end_time is not None:
self.slconn.setEndTime(self.end_time)
def run(self):
"""
Start this SLClient.
"""
if self.infolevel is not None:
self.slconn.requestInfo(self.infolevel)
# Loop with the connection manager
count = 1
slpack = self.slconn.collect()
while slpack is not None:
if (slpack == SLPacket.SLTERMINATE):
break
try:
# do something with packet
terminate = self.packetHandler(count, slpack)
if terminate:
break
except SeedLinkException as sle:
print(self.__class__.__name__ + ": " + sle.value)
if count >= sys.maxint:
count = 1
print "DEBUG INFO: " + self.__class__.__name__ + ":",
print "Packet count reset to 1"
else:
count += 1
slpack = self.slconn.collect()
# Close the SeedLinkConnection
self.slconn.close()
def packetHandler(self, count, slpack):
"""
Processes each packet received from the SeedLinkConnection.
This method should be overridden when sub-classing SLClient.
:type count: int
:param count: Packet counter.
:type slpack: :class:`~obspy.seedlink.SLPacket`
:param slpack: packet to process.
:return: Boolean true if connection to SeedLink server should be
closed and session terminated, false otherwise.
"""
# check if not a complete packet
if slpack is None or (slpack == SLPacket.SLNOPACKET) or \
(slpack == SLPacket.SLERROR):
return False
# get basic packet info
seqnum = slpack.getSequenceNumber()
type = slpack.getType()
# process INFO packets here
if (type == SLPacket.TYPE_SLINF):
return False
if (type == SLPacket.TYPE_SLINFT):
print "Complete INFO:\n" + self.slconn.getInfoString()
if self.infolevel is not None:
return True
else:
return False
# can send an in-line INFO request here
try:
#if (count % 100 == 0 and not self.slconn.state.expect_info):
if (count % 100 == 0):
infostr = "ID"
self.slconn.requestInfo(infostr)
except SeedLinkException as sle:
print(self.__class__.__name__ + ": " + sle.value)
# if here, must be a data blockette
print self.__class__.__name__ + ": packet seqnum:",
print str(seqnum) + ": blockette type: " + str(type)
if not self.ppackets:
return False
# process packet data
trace = slpack.getTrace()
if trace is not None:
print self.__class__.__name__ + ": blockette contains a trace: "
print trace.id, trace.stats['starttime'],
print " dt:" + str(1.0 / trace.stats['sampling_rate']),
print " npts:" + str(trace.stats['npts']),
print " sampletype:" + str(trace.stats['sampletype']),
print " dataquality:" + str(trace.stats['dataquality'])
if self.verbose >= 3:
print self.__class__.__name__ + ":"
print "blockette contains a trace: " + str(trace.stats)
else:
print self.__class__.__name__ + ": blockette contains no trace"
return False
def printUsage(self, concise=True):
"""
Prints the usage message for this class.
"""
print("\nUsage: python %s [options] <[host]:port>" %
(self.__class__.__name__))
if concise:
usage = "Use '-h' for detailed help"
else:
usage = USAGE
print(usage)
@classmethod
def main(cls, args):
"""
Main method - creates and runs an SLClient using the specified
command line arguments
"""
slClient = None
try:
slClient = SLClient()
rval = slClient.parseCmdLineArgs(args)
if (rval != 0):
sys.exit(rval)
slClient.initialize()
slClient.run()
except Exception as e:
logger.critical(e)
traceback.print_exc()
