def __init__(self, send_data, notif_listener, motes = None, auto_commit = True,
options = DEFAULT_OPTIONS):
self.send_data = send_data
self.notif_listener = notif_listener
self.register()
self.files = {}
if motes:
self.all_motes = motes
else:
self.all_motes = []
self.auto_commit = auto_commit
self.options = options
self.transmit_list = BlockMetadata()
# internal lists of motes
self.handshake_motes = []
self.incomplete_motes = []
self.status_motes = []
self.commit_motes = []
self.complete_motes = []
self.failure_motes = []
# handle retries and failures
self.orc = ReliableCommander.ReliableCommander(self.send_data,
self.cmd_failure_callback,
retry_delay = options.reliable_retry_delay,
command_timeout = options.reliable_command_timeout,
max_retries = options.reliable_max_retries)
self.worker = NotifWorker()
self.state = 'Init'
# conditions
self.data_event = Event()
self.commit_event = Event()
def __init__(self,
send_data,
notif_listener,
motes=None,
auto_commit=True,
options=DEFAULT_OPTIONS):
self.send_data = send_data
self.notif_listener = notif_listener
self.register()
self.files = {}
if motes:
self.all_motes = motes
else:
self.all_motes = []
self.auto_commit = auto_commit
self.options = options
self.transmit_list = BlockMetadata()
# internal lists of motes
self.handshake_motes = []
self.incomplete_motes = []
self.status_motes = []
self.commit_motes = []
self.complete_motes = []
self.failure_motes = []
# handle retries and failures
self.orc = ReliableCommander.ReliableCommander(
self.send_data,
self.handle_failure,
retry_delay=options.reliable_retry_delay,
command_timeout=options.reliable_command_timeout,
max_retries=options.reliable_max_retries)
self.worker = NotifWorker()
self.state = 'Init'
# conditions
self.data_event = Event()
self.commit_event = Event()
class OTAPCommunicator(object):
'''
Communicator class for controlling OTAP sessions to a network
>>> motes = [ ...list of mote macs... ]
>>> mgr = OTAPCommunicator(send_data, notif_listener, motes)
>>> mgr.load_file(filename)
>>> mgr.start_handshake(filename)
'''
def __init__(self,
send_data,
notif_listener,
motes=None,
auto_commit=True,
options=DEFAULT_OPTIONS):
self.send_data = send_data
self.notif_listener = notif_listener
self.register()
self.files = {}
if motes:
self.all_motes = motes
else:
self.all_motes = []
self.auto_commit = auto_commit
self.options = options
self.transmit_list = BlockMetadata()
# internal lists of motes
self.handshake_motes = []
self.incomplete_motes = []
self.status_motes = []
self.commit_motes = []
self.complete_motes = []
self.failure_motes = []
# handle retries and failures
self.orc = ReliableCommander.ReliableCommander(
self.send_data,
self.handle_failure,
retry_delay=options.reliable_retry_delay,
command_timeout=options.reliable_command_timeout,
max_retries=options.reliable_max_retries)
self.worker = NotifWorker()
self.state = 'Init'
# conditions
self.data_event = Event()
self.commit_event = Event()
def load_file(self, filename, is_otap=True):
self.files[filename] = FileParser(filename, is_otap)
# for external control, we need to block while work is ongoing
def wait_for_data_complete(self):
# wait has a timeout so that we catch user interruptions
while not self.data_event.is_set():
self.data_event.wait(self.options.wait_timeout)
def wait_for_commit_complete(self):
# wait has a timeout so that we catch user interruptions
while not self.commit_event.is_set():
self.commit_event.wait(self.options.wait_timeout)
def cancel(self):
'Cancel the OTAP operation, ensure the caller is notified'
self.notify_data_complete()
self.notify_commit_complete()
def register(self):
self.notif_listener.register(self.data_callback)
def status(self):
s = "State: %s" % self.state
s += "\nHandshaking: %s" % self.handshake_motes
s += "\nIn progress: %s" % self.incomplete_motes
s += "\nComplete: %s" % self.complete_motes
s += "\nFailures: %s" % self.failure_motes
s += "\nTransmit list: %s" % self.transmit_list.blocklist()
return s
# ------------------------------------------------------------
# Callbacks
def data_callback(self, data):
# handle OTAP command responses
if data.src_port == OTAP_PORT:
index = 0
# parse the payload for ALL responses in the packet
while index < len(data.payload):
# handle OTAP command responses
cmd_type = data.payload[index]
cmd_len = data.payload[index + 1]
cmd_data = data.payload_str[index + 2:index + 2 + cmd_len]
# the result of the received callback indicates whether
# the command response was expected -- don't try to handle
# unexpected responses
if self.orc.received(data.mac, cmd_type):
if cmd_type == OTAP.HANDSHAKE_CMD:
self.worker.add_task(self.handshake_callback, data.mac,
cmd_data)
elif cmd_type == OTAP.STATUS_CMD:
self.worker.add_task(self.status_callback, data.mac,
cmd_data)
elif cmd_type == OTAP.COMMIT_CMD:
self.worker.add_task(self.commit_callback, data.mac,
cmd_data)
index += 2 + cmd_len
def handle_failure(self, mac, cmd_id):
# insert a task to handle failure so we don't interfere with mote lists
# while the handshake or status collection task is running
self.worker.add_task(self.cmd_failure_callback, mac, cmd_id)
# OTAP response callbacks
def handshake_callback(self, mac, cmd_data):
log.info('Got Handshake response from %s' % print_mac(mac))
log.debug('Data: ' + ' '.join(['%02X' % ord(b) for b in cmd_data]))
oh_resp = parse_obj(OtapHandshakeResp, cmd_data)
log.debug(str(oh_resp))
if not self.state == 'Handshake':
return
if not mac in self.handshake_motes:
log.info('Duplicate handshake response for %s: %d', print_mac(mac),
oh_resp.otapResult)
return
# add a mote that accepts the handshake to the list of motes to send to
if oh_resp.otapResult == 0:
# validate mac is in the handshake list
if mac in self.handshake_motes and not mac in self.incomplete_motes:
self.incomplete_motes.append(mac)
else:
otap_err = otap_error_string(oh_resp.otapResult)
msg = "Handshake rejected (%s) by %s" % (otap_err, print_mac(mac))
print msg
log.warning(msg)
# TODO: handle the delay field
# remove this mote from the list of expected handshakers
self.handshake_motes.remove(mac)
# once the list of expected handshakers is empty, we're ready to move on
if not len(self.handshake_motes):
self.handshake_complete()
def status_callback(self, mac, cmd_data):
log.info('Got Status response from %s' % print_mac(mac))
log.debug('Data: ' + ' '.join(['%02X' % ord(b) for b in cmd_data]))
os_resp = OtapStatusResp()
os_resp.parse(cmd_data)
log.debug(str(os_resp))
if not self.state == 'Status':
return
# remove this mote from the list of motes we need status from
if mac in self.status_motes:
self.status_motes.remove(mac)
# if missing blocks, add_data_block
if len(os_resp.missing_blocks):
for b in os_resp.missing_blocks:
self.transmit_list.add_dependent(b, mac)
# otherwise, move the mote to the completed list
elif os_resp.header.otapResult == 0:
if mac in self.incomplete_motes:
log.info('Data transmission to %s is complete' %
print_mac(mac))
self.incomplete_motes.remove(mac)
self.complete_motes.append(mac)
else:
# no missing blocks, but status is an error
if mac in self.incomplete_motes:
msg = 'Status error (%s) for %s, declaring failure' % (
otap_error_string(
os_resp.header.otapResult), print_mac(mac))
log.error(msg)
self.incomplete_motes.remove(mac)
self.failure_motes.append(mac)
# TODO: handle the response that indicates the mote has reset or forgotten
# about this OTAP session
self.check_status_complete()
def check_status_complete(self):
# determine whether it's time to move to a new state
# if there are no more incomplete motes, we're done sending data
if not len(self.incomplete_motes):
self.data_complete()
# otherwise, we need to send more data when we've received all the statuses
elif not len(self.status_motes):
self.start_data()
def commit_callback(self, mac, cmd_data):
log.info('Got Commit response from %s' % print_mac(mac))
log.debug('Data: ' + ' '.join(['%02X' % ord(b) for b in cmd_data]))
oc_resp = parse_obj(OtapCommitResp, cmd_data)
log.debug(str(oc_resp))
if not self.state == 'Commit':
return
if mac in self.commit_motes:
self.commit_motes.remove(mac)
if oc_resp.otapResult == 0:
fcs = self.files[self.current_file].fcs
msg = '%s committed %s [FCS=0x%04x]' % (print_mac(mac),
self.current_file, fcs)
print msg
log.info(msg)
else:
msg = 'Commit error (%s) on %s' % (otap_error_string(
oc_resp.otapResult), print_mac(mac))
print msg
log.error(msg)
self.complete_motes.remove(mac)
self.failure_motes.append(mac)
# detect when all motes have responded to the commit
if not len(self.commit_motes):
self.commit_complete()
def cmd_failure_callback(self, mac, cmd_id):
log.error('Command failure for %s, command %d' %
(print_mac(mac), cmd_id))
self.failure_motes.append(mac)
# TODO: remove the failed mote from the all_motes list for the next file(s)?
# remove the failed mote from the internal lists
if mac in self.handshake_motes:
self.handshake_motes.remove(mac)
if mac in self.incomplete_motes:
self.incomplete_motes.remove(mac)
if mac in self.status_motes:
self.status_motes.remove(mac)
if mac in self.commit_motes:
self.commit_motes.remove(mac)
if mac in self.complete_motes:
self.complete_motes.remove(mac)
# detect if this command failure means we need to change state
if self.state == 'Handshake' and not len(self.handshake_motes):
self.handshake_complete()
if self.state == 'Status':
self.check_status_complete()
if self.state == 'Commit' and not len(self.commit_motes):
self.commit_complete()
# ------------------------------------------------------------
# Handshake operations
def build_handshake(self, filename):
# TODO: load file if not already loaded
otap_file = self.files[filename]
hs_data = otap_file.get_handshake_data()
self.current_file = filename # TODO: use FileParser object?
self.current_mic = otap_file.mic
hs_dump = ' '.join(['%02X' % ord(c) for c in hs_data])
log.debug('Handshake data [%d]: %s' % (len(hs_data), hs_dump))
return hs_data
def start_handshake(self, filename):
self.worker.add_task(self.handshake_task, filename)
def handshake_task(self, filename):
self.state = 'Handshake'
msg = 'Starting handshake with %d motes' % len(self.all_motes)
print msg
log.info(msg)
cmd_data = self.build_handshake(filename)
# clear the various mote lists
self.incomplete_motes = []
self.complete_motes = []
self.handshake_motes = self.all_motes[:] # make a copy
for m in self.handshake_motes:
# send handshake command to each mote
self.send_reliable_cmd(m, OTAP.HANDSHAKE_CMD, cmd_data)
def handshake_complete(self):
# build the list of blocks to send
msg = 'Handshake completed, %d motes accepted' % len(
self.incomplete_motes)
print msg
log.info(msg)
if len(self.incomplete_motes):
# initially, the list of blocks to send is all blocks to all
# accepted (incomplete) motes
num_blocks = len(self.files[self.current_file].blocks)
self.transmit_list.add_all_dependents(num_blocks,
self.incomplete_motes)
self.start_data()
else:
self.state = ''
# if there are no motes to send to, signal the end of this operation
self.cancel()
# ------------------------------------------------------------
# Data and Status operations
def start_data(self):
self.worker.add_task(self.data_task)
def data_task(self):
self.state = 'Data'
blist = self.transmit_list.blocklist()
msg = 'Starting data transmission of %d blocks, %d motes left' % (
len(blist), len(self.incomplete_motes))
print msg
log.info(msg)
file_info = self.files[self.current_file]
try:
for bnum in blist:
block_data = file_info.blocks[bnum]
cmd = OtapData(file_info.mic, bnum, block_data)
(deps, macs) = self.transmit_list.get_meta(bnum)
if deps <= self.options.broadcast_threshold and len(macs):
for m in macs:
log.info('Sending block %d to %s' %
(bnum, print_mac(m)))
self.send_otap_cmd(m, OTAP.DATA_CMD, cmd.serialize())
else:
log.info('Sending block %d via broadcast' % (bnum))
self.send_otap_cmd(BROADCAST_ADDR, OTAP.DATA_CMD,
cmd.serialize())
# wait for inter-command delay
time.sleep(self.options.inter_command_delay)
except IOError:
log.error('Manager disconnected. Cancelling OTAP operation')
self.cancel()
return
log.info('Finished sending data')
# wait before querying status
time.sleep(self.options.post_data_delay)
self.start_status()
def start_status(self):
self.worker.add_task(self.status_task)
def status_task(self):
self.state = 'Status'
msg = 'Starting status query to %d motes' % len(self.incomplete_motes)
print msg
log.info(msg)
self.transmit_list.clear()
self.status_motes = self.incomplete_motes[:]
for m in self.status_motes:
# send status command to each mote
log.debug('Sending status to %s' % (print_mac(m)))
self.send_reliable_cmd(m, OTAP.STATUS_CMD,
struct.pack('!L', self.current_mic))
def notify_data_complete(self):
self.data_event.set()
def data_complete(self):
log.info('Data complete')
print 'Data complete. No motes left on incomplete list'
if self.auto_commit:
self.start_commit(self.current_file)
else:
print "Call start_commit('%s') to send OTAP commit" % self.current_file
# the completion signal is always the last step in the callback
self.notify_data_complete()
# ------------------------------------------------------------
# Commit operations
def start_commit(self, filename):
if len(self.complete_motes):
self.worker.add_task(self.commit_task, filename)
else:
self.commit_complete()
def commit_task(self, filename=''):
commit_file = filename
if not commit_file:
commit_file = self.current_file
commit_mic = self.files[commit_file].mic
self.state = 'Commit'
msg = "Starting commit for '%s' to %d motes" % (
commit_file, len(self.complete_motes))
print msg
log.info(msg)
self.commit_motes = self.complete_motes[:]
for m in self.commit_motes:
# send commit command to each mote
self.send_reliable_cmd(m, OTAP.COMMIT_CMD,
struct.pack('!L', commit_mic))
def notify_commit_complete(self):
self.commit_event.set()
def commit_complete(self):
log.info('Commit complete')
# TODO: format the mote lists
if len(self.complete_motes):
msg = 'Successful OTAP to:\n'
msg += '\n'.join(print_mac(m) for m in self.complete_motes)
print msg
log.info(msg)
if len(self.failure_motes):
msg = 'Failures:\n'
msg += '\n'.join(print_mac(m) for m in self.failure_motes)
print msg
log.error(msg)
# the completion signal is always the last step in the callback
self.notify_commit_complete()
# send a command to a mote
def send_otap_cmd(self, mac, cmd_id, data):
cmd = struct.pack('BB', cmd_id, len(data)) + data
count = 0
(rc, cbid) = self.send_data(mac, cmd, OTAP_PORT)
while rc != 0 and count < self.options.data_retries:
if rc == END_OF_LIST:
# if the mote doesn't exist, return
log.error('Mote %s is not in the network' % (print_mac(mac)))
return
elif rc == DISCONNECTED:
# if we're disconnected, raise hell
raise IOError('Manager disconnected')
# Otherwise, wait and retry several times
time.sleep(self.options.retry_delay)
log.debug('Resending otap block to %s, error: %d' %
(print_mac(mac), rc))
(rc, cbid) = self.send_data(mac, cmd, OTAP_PORT)
count += 1
def send_reliable_cmd(self, mac, cmd_id, data):
result = self.orc.send(mac, OTAP_PORT, cmd_id, data)
# wait for the inter-command delay after sending any reliable message
time.sleep(self.options.inter_command_delay)
return result
class OTAPCommunicator(object):
'''
Communicator class for controlling OTAP sessions to a network
>>> motes = [ ...list of mote macs... ]
>>> mgr = OTAPCommunicator(send_data, notif_listener, motes)
>>> mgr.load_file(filename)
>>> mgr.start_handshake(filename)
'''
def __init__(self, send_data, notif_listener, motes = None, auto_commit = True,
options = DEFAULT_OPTIONS):
self.send_data = send_data
self.notif_listener = notif_listener
self.register()
self.files = {}
if motes:
self.all_motes = motes
else:
self.all_motes = []
self.auto_commit = auto_commit
self.options = options
self.transmit_list = BlockMetadata()
# internal lists of motes
self.handshake_motes = []
self.incomplete_motes = []
self.status_motes = []
self.commit_motes = []
self.complete_motes = []
self.failure_motes = []
# handle retries and failures
self.orc = ReliableCommander.ReliableCommander(self.send_data,
self.cmd_failure_callback,
retry_delay = options.reliable_retry_delay,
command_timeout = options.reliable_command_timeout,
max_retries = options.reliable_max_retries)
self.worker = NotifWorker()
self.state = 'Init'
# conditions
self.data_event = Event()
self.commit_event = Event()
def load_file(self, filename, is_otap = True):
self.files[filename] = FileParser(filename, is_otap)
# for external control, we need to block while work is ongoing
def wait_for_data_complete(self):
# wait has a timeout so that we catch user interruptions
while not self.data_event.is_set():
self.data_event.wait(self.options.wait_timeout)
def wait_for_commit_complete(self):
# wait has a timeout so that we catch user interruptions
while not self.commit_event.is_set():
self.commit_event.wait(self.options.wait_timeout)
def cancel(self):
'Cancel the OTAP operation, ensure the caller is notified'
self.notify_data_complete()
self.notify_commit_complete()
def register(self):
self.notif_listener.register(self.data_callback)
def status(self):
s = "State: %s" % self.state
s += "\nHandshaking: %s" % self.handshake_motes
s += "\nIn progress: %s" % self.incomplete_motes
s += "\nComplete: %s" % self.complete_motes
s += "\nFailures: %s" % self.failure_motes
s += "\nTransmit list: %s" % self.transmit_list.blocklist()
return s
# ------------------------------------------------------------
# Callbacks
def data_callback(self, data):
# handle OTAP command responses
if data.src_port == OTAP_PORT:
index = 0
# parse the payload for ALL responses in the packet
while index < len(data.payload):
# handle OTAP command responses
cmd_type = data.payload[index]
cmd_len = data.payload[index+1]
cmd_data = data.payload_str[index+2:index+2+cmd_len]
# the result of the received callback indicates whether
# the command response was expected -- don't try to handle
# unexpected responses
if self.orc.received(data.mac, cmd_type):
if cmd_type == OTAP.HANDSHAKE_CMD:
self.worker.add_task(self.handshake_callback,
data.mac, cmd_data)
elif cmd_type == OTAP.STATUS_CMD:
self.worker.add_task(self.status_callback,
data.mac, cmd_data)
elif data.payload[0] == OTAP.COMMIT_CMD:
self.worker.add_task(self.commit_callback,
data.mac, cmd_data)
index += 2 + cmd_len
def handshake_callback(self, mac, cmd_data):
log.info('Got Handshake response from %s' % print_mac(mac))
log.debug('Data: ' + ' '.join(['%02X' % ord(b) for b in cmd_data]))
oh_resp = parse_obj(OtapHandshakeResp, cmd_data)
log.debug(str(oh_resp))
if not self.state == 'Handshake':
return
if not mac in self.handshake_motes:
log.info('Duplicate handshake response for %s: %d', print_mac(mac), oh_resp.otapResult)
return
# add a mote that accepts the handshake to the list of motes to send to
if oh_resp.otapResult == 0:
# validate mac is in the handshake list
if mac in self.handshake_motes and not mac in self.incomplete_motes:
self.incomplete_motes.append(mac)
else:
otap_err = otap_error_string(oh_resp.otapResult)
msg = "Handshake rejected (%s) by %s" % (otap_err, print_mac(mac))
print msg
log.warning(msg)
# TODO: handle the delay field
# remove this mote from the list of expected handshakers
self.handshake_motes.remove(mac)
# once the list of expected handshakers is empty, we're ready to move on
if not len(self.handshake_motes):
self.handshake_complete()
def status_callback(self, mac, cmd_data):
log.info('Got Status response from %s' % print_mac(mac))
log.debug('Data: ' + ' '.join(['%02X' % ord(b) for b in cmd_data]))
os_resp = OtapStatusResp()
os_resp.parse(cmd_data)
log.debug(str(os_resp))
if not self.state == 'Status':
return
# remove this mote from the list of motes we need status from
if mac in self.status_motes:
self.status_motes.remove(mac)
# if missing blocks, add_data_block
if len(os_resp.missing_blocks):
for b in os_resp.missing_blocks:
self.transmit_list.add_dependent(b, mac)
# otherwise, move the mote to the completed list
elif os_resp.header.otapResult == 0:
if mac in self.incomplete_motes:
log.info('Data transmission to %s is complete' % print_mac(mac))
self.incomplete_motes.remove(mac)
self.complete_motes.append(mac)
else:
# no missing blocks, but status is an error
if mac in self.incomplete_motes:
msg = 'Status error (%s) for %s, declaring failure' % (otap_error_string(os_resp.header.otapResult), print_mac(mac))
log.error(msg)
self.incomplete_motes.remove(mac)
self.failure_motes.append(mac)
# TODO: handle the response that indicates the mote has reset or forgotten
# about this OTAP session
self.check_status_complete()
def check_status_complete(self):
# determine whether it's time to move to a new state
# if there are no more incomplete motes, we're done sending data
if not len(self.incomplete_motes):
self.data_complete()
# otherwise, we need to send more data when we've received all the statuses
elif not len(self.status_motes):
self.start_data()
def commit_callback(self, mac, cmd_data):
log.info('Got Commit response from %s' % print_mac(mac))
log.debug('Data: ' + ' '.join(['%02X' % ord(b) for b in cmd_data]))
oc_resp = parse_obj(OtapCommitResp, cmd_data)
log.debug(str(oc_resp))
if not self.state == 'Commit':
return
if mac in self.commit_motes:
self.commit_motes.remove(mac)
if oc_resp.otapResult == 0:
fcs = self.files[self.current_file].fcs
msg = '%s committed %s [FCS=0x%04x]' % (print_mac(mac),
self.current_file,
fcs)
print msg
log.info(msg)
else:
msg = 'Commit error (%s) on %s' % (otap_error_string(oc_resp.otapResult), print_mac(mac))
print msg
log.error(msg)
self.complete_motes.remove(mac)
self.failure_motes.append(mac)
# detect when all motes have responded to the commit
if not len(self.commit_motes):
self.commit_complete()
def cmd_failure_callback(self, mac, cmd_id):
log.error('Command failure for %s, command %d' % (print_mac(mac), cmd_id))
self.failure_motes.append(mac)
# TODO: remove the failed mote from the all_motes list for the next file(s)?
# remove the failed mote from the internal lists
if mac in self.handshake_motes:
self.handshake_motes.remove(mac)
if mac in self.incomplete_motes:
self.incomplete_motes.remove(mac)
if mac in self.status_motes:
self.status_motes.remove(mac)
if mac in self.commit_motes:
self.commit_motes.remove(mac)
if mac in self.complete_motes:
self.complete_motes.remove(mac)
# detect if this command failure means we need to change state
if self.state == 'Handshake' and not len(self.handshake_motes):
self.handshake_complete()
if self.state == 'Status':
self.check_status_complete()
if self.state == 'Commit' and not len(self.commit_motes):
self.commit_complete()
# ------------------------------------------------------------
# Handshake operations
def build_handshake(self, filename):
# TODO: load file if not already loaded
otap_file = self.files[filename]
hs_data = otap_file.get_handshake_data()
self.current_file = filename # TODO: use FileParser object?
self.current_mic = otap_file.mic
hs_dump = ' '.join(['%02X' % ord(c) for c in hs_data])
log.debug('Handshake data [%d]: %s' % (len(hs_data), hs_dump))
return hs_data
def start_handshake(self, filename):
self.worker.add_task(self.handshake_task, filename)
def handshake_task(self, filename):
self.state = 'Handshake'
msg = 'Starting handshake with %d motes' % len(self.all_motes)
print msg
log.info(msg)
cmd_data = self.build_handshake(filename)
# clear the various mote lists
self.incomplete_motes = []
self.complete_motes = []
self.handshake_motes = self.all_motes[:] # make a copy
for m in self.handshake_motes:
# send handshake command to each mote
self.send_reliable_cmd(m, OTAP.HANDSHAKE_CMD, cmd_data)
def handshake_complete(self):
# build the list of blocks to send
msg = 'Handshake completed, %d motes accepted' % len(self.incomplete_motes)
print msg
log.info(msg)
if len(self.incomplete_motes):
# initially, the list of blocks to send is all blocks to all
# accepted (incomplete) motes
num_blocks = len(self.files[self.current_file].blocks)
self.transmit_list.add_all_dependents(num_blocks, self.incomplete_motes)
self.start_data()
else:
self.state = ''
# if there are no motes to send to, signal the end of this operation
self.cancel()
# ------------------------------------------------------------
# Data and Status operations
def start_data(self):
self.worker.add_task(self.data_task)
def data_task(self):
self.state = 'Data'
blist = self.transmit_list.blocklist()
msg = 'Starting data transmission of %d blocks, %d motes left' % (len(blist), len(self.incomplete_motes))
print msg
log.info(msg)
file_info = self.files[self.current_file]
try:
for bnum in blist:
block_data = file_info.blocks[bnum]
cmd = OtapData(file_info.mic, bnum, block_data)
(deps, macs) = self.transmit_list.get_meta(bnum)
if deps <= self.options.broadcast_threshold and len(macs):
for m in macs:
log.info('Sending block %d to %s' % (bnum, print_mac(m)))
self.send_otap_cmd(m, OTAP.DATA_CMD, cmd.serialize())
else:
log.info('Sending block %d via broadcast' % (bnum))
self.send_otap_cmd(BROADCAST_ADDR, OTAP.DATA_CMD, cmd.serialize())
# wait for inter-command delay
time.sleep(self.options.inter_command_delay)
except IOError:
log.error('Manager disconnected. Cancelling OTAP operation')
self.cancel()
return
log.info('Finished sending data')
# wait before querying status
time.sleep(self.options.post_data_delay)
self.start_status()
def start_status(self):
self.worker.add_task(self.status_task)
def status_task(self):
self.state = 'Status'
msg = 'Starting status query to %d motes' % len(self.incomplete_motes)
print msg
log.info(msg)
self.transmit_list.clear()
self.status_motes = self.incomplete_motes[:]
for m in self.status_motes:
# send status command to each mote
log.debug('Sending status to %s' % (print_mac(m)))
self.send_reliable_cmd(m, OTAP.STATUS_CMD, struct.pack('!L', self.current_mic))
def notify_data_complete(self):
self.data_event.set()
def data_complete(self):
log.info('Data complete')
print 'Data complete. No motes left on incomplete list'
if self.auto_commit:
self.start_commit(self.current_file)
else:
print "Call start_commit('%s') to send OTAP commit" % self.current_file
# the completion signal is always the last step in the callback
self.notify_data_complete()
# ------------------------------------------------------------
# Commit operations
def start_commit(self, filename):
if len(self.complete_motes):
self.worker.add_task(self.commit_task, filename)
else:
self.commit_complete()
def commit_task(self, filename = ''):
commit_file = filename
if not commit_file:
commit_file = self.current_file
commit_mic = self.files[commit_file].mic
self.state = 'Commit'
msg = "Starting commit for '%s' to %d motes" % (commit_file, len(self.complete_motes))
print msg
log.info(msg)
self.commit_motes = self.complete_motes[:]
for m in self.commit_motes:
# send commit command to each mote
self.send_reliable_cmd(m, OTAP.COMMIT_CMD, struct.pack('!L', commit_mic))
def notify_commit_complete(self):
self.commit_event.set()
def commit_complete(self):
log.info('Commit complete')
# TODO: format the mote lists
if len(self.complete_motes):
msg = 'Successful OTAP to:\n'
msg += '\n'.join(print_mac(m) for m in self.complete_motes)
print msg
log.info(msg)
if len(self.failure_motes):
msg = 'Failures:\n'
msg += '\n'.join(print_mac(m) for m in self.failure_motes)
print msg
log.error(msg)
# the completion signal is always the last step in the callback
self.notify_commit_complete()
# send a command to a mote
def send_otap_cmd(self, mac, cmd_id, data):
cmd = struct.pack('BB', cmd_id, len(data)) + data
count = 0
(rc, cbid) = self.send_data(mac, cmd, OTAP_PORT)
while rc != 0 and count < self.options.data_retries:
if rc == END_OF_LIST:
# if the mote doesn't exist, return
log.error('Mote %s is not in the network' % (print_mac(mac)))
return
elif rc == DISCONNECTED:
# if we're disconnected, raise hell
raise IOError('Manager disconnected')
# Otherwise, wait and retry several times
time.sleep(self.options.retry_delay)
log.debug('Resending otap block to %s, error: %d' % (print_mac(mac), rc))
(rc, cbid) = self.send_data(mac, cmd, OTAP_PORT)
count += 1
def send_reliable_cmd(self, mac, cmd_id, data):
result = self.orc.send(mac, OTAP_PORT, cmd_id, data)
# wait for the inter-command delay after sending any reliable message
time.sleep(self.options.inter_command_delay)
return result