def _attempt_connect(**kwargs):
ignore = kwargs.pop('ignore', [])
try:
# Attempt to connect to automatically selected port.
dropbot = db.SerialProxy(port=port,
ignore=ignore,
**kwargs)
raise asyncio.Return(dropbot)
except db.proxy.NoPower as exception:
# No 12V power supply detected on DropBot.
_L().debug('No 12V power supply detected.')
responses = signals.signal('no-power').send('keep_alive')
for t in asyncio.as_completed(
[loop.create_task(r[1]) for r in responses]):
response = yield asyncio.From(t)
if response == 'ignore':
ignore.append(db.proxy.NoPower)
break
else:
raise exception
except bnr.proxy.DeviceVersionMismatch as exception:
# Firmware version does not match driver version.
_L().debug(
'Driver version (`%s`) does not match firmware '
'version (`%s`)', db.__version__,
exception.device_version)
responses = signals.signal('version-mismatch')\
.send('keep_alive', driver_version=db.__version__,
firmware_version=exception.device_version)
update = False
for t in asyncio.as_completed(
[loop.create_task(r[1]) for r in responses]):
response = yield asyncio.From(t)
if response == 'ignore':
ignore.append(bnr.proxy.DeviceVersionMismatch)
break
elif response == 'update':
update = True
break
else:
raise
if update:
# Flash firmware and retry connection.
_L().info('Flash firmware and retry connection.')
yield asyncio.From(co_flash_firmware())
dropbot = yield asyncio.From(
_attempt_connect(ignore=ignore, **kwargs))
raise asyncio.Return(dropbot)
def _connect_dual_stack(self, primary_address, secondary_address):
'''Connect using happy eyeballs.'''
self._primary_connection = self._connection_factory(primary_address)
self._secondary_connection = self._connection_factory(
secondary_address)
@trollius.coroutine
def connect_primary():
yield From(self._primary_connection.connect())
raise Return(self._primary_connection)
@trollius.coroutine
def connect_secondary():
yield From(self._secondary_connection.connect())
raise Return(self._secondary_connection)
primary_fut = connect_primary()
secondary_fut = connect_secondary()
failed = False
for fut in trollius.as_completed((primary_fut, secondary_fut)):
if not self._active_connection:
try:
self._active_connection = yield From(fut)
except NetworkError:
if not failed:
_logger.debug('Original dual stack exception',
exc_info=True)
failed = True
else:
raise
else:
_logger.debug('Got first of dual stack.')
else:
@trollius.coroutine
def cleanup():
try:
conn = yield From(fut)
except NetworkError:
pass
else:
conn.close()
_logger.debug('Closed abandoned connection.')
trollius.get_event_loop().create_task(cleanup())
if self._active_connection.address == secondary_address:
preferred_addr = secondary_address
else:
preferred_addr = primary_address
self._happy_eyeballs_table.set_preferred(preferred_addr,
primary_address,
secondary_address)
def _connect_dual_stack(self, primary_address, secondary_address):
'''Connect using happy eyeballs.'''
self._primary_connection = self._connection_factory(primary_address)
self._secondary_connection = self._connection_factory(secondary_address)
@trollius.coroutine
def connect_primary():
yield From(self._primary_connection.connect())
raise Return(self._primary_connection)
@trollius.coroutine
def connect_secondary():
yield From(self._secondary_connection.connect())
raise Return(self._secondary_connection)
primary_fut = connect_primary()
secondary_fut = connect_secondary()
failed = False
for fut in trollius.as_completed((primary_fut, secondary_fut)):
if not self._active_connection:
try:
self._active_connection = yield From(fut)
except NetworkError:
if not failed:
_logger.debug('Original dual stack exception', exc_info=True)
failed = True
else:
raise
else:
_logger.debug('Got first of dual stack.')
else:
@trollius.coroutine
def cleanup():
try:
conn = yield From(fut)
except NetworkError:
pass
else:
conn.close()
_logger.debug('Closed abandoned connection.')
trollius.get_event_loop().create_task(cleanup())
if self._active_connection.address == secondary_address:
preferred_addr = secondary_address
else:
preferred_addr = primary_address
self._happy_eyeballs_table.set_preferred(preferred_addr, primary_address, secondary_address)
def watcher(tasks, delay=False):
res = []
for t in asyncio.as_completed(tasks):
r = yield From(t)
res.append(r)
if delay:
# simulate processing delay
process_time = random.random() / 10
yield From(asyncio.sleep(process_time))
#print(res)
#assert(sorted(res) == res)
if sorted(res) != res:
print('FAIL', res)
print('------------')
else:
print('.', end='')
sys.stdout.flush()
def watcher(tasks,delay=False):
res = []
for t in asyncio.as_completed(tasks):
r = yield From(t)
res.append(r)
if delay:
# simulate processing delay
process_time = random.random() / 10
yield From(asyncio.sleep(process_time))
#print(res)
#assert(sorted(res) == res)
if sorted(res) != res:
print('FAIL', res)
print('------------')
else:
print('.', end='')
sys.stdout.flush()
def test_as_completed(self):
fut = asyncio.Future()
fut.set_result("ok")
with self.assertRaises(TypeError):
for f in trollius.as_completed(fut):
pass
@trollius.coroutine
def get_results(fut):
results = []
for f in trollius.as_completed([fut]):
res = yield trollius.From(f)
results.append(res)
raise trollius.Return(results)
results = self.loop.run_until_complete(get_results(fut))
self.assertEqual(results, ["ok"])
def collectResults(self, allData):
try:
for record in allData:
parentDoc = {k:v for (k,v) in record.items() if k not in [u'_id', u'value']}
aDataVal = str(record[u'value'])
keyTs = aDataVal[:8]
keyDataName = Name('/ndn/ucla.edu/bms/melnitz/kds').append(keyTs).append(self.keyId)
yield From(self._decryptAndPrintRecord(aDataVal, keyDataName, parentDoc))
receivedVals = []
try:
for i in asyncio.as_completed([
self.resultQueue.get() for n in range(len(allData))], timeout=5):
v = yield From(i)
receivedVals.append(v)
except asyncio.TimeoutError:
pass
self.prettifyResults(receivedVals)
print
finally:
self.dataReady.set()
def get_results(fut):
results = []
for f in trollius.as_completed([fut]):
res = yield trollius.From(f)
results.append(res)
raise trollius.Return(results)