from pypes.filters import ConsoleOutputWriter
class HelloWorld(Component):
__metatype__ = 'ADAPTER'
def __init__(self):
Component.__init__(self)
def run(self):
while True:
for data in self.receive_all('in'):
message = 'Hello %s' % data
self.send('out', message)
self.yield_ctrl()
hello = HelloWorld() # our custom component
printer = ConsoleOutputWriter() # writes to console (STDOUT)
Network = {
hello: {printer:('out','in')}
}
if __name__ == '__main__':
# create a new data flow
p = Dataflow(Network)
# send some data through the data flow
for name in ['Tom', 'Dick', 'Harry']:
p.send(name)
# shut down the data flow
p.close()
def update(self, jsconfig):
statusText = 'Unidentified Error Saving Project'
# close any existing workflow
if self.Workflow is not None:
try:
self.Workflow.close()
except:
pass
# set the new updated config from the UI
try:
self._config = json.loads(jsconfig)
except:
statusText = 'This Project Configuration is Bad'
else:
# Check for valid input component
(in_status, inputs) = self.config_has_valid_input()
(out_status, outputs) = self.config_has_valid_output()
if in_status is False:
statusText = 'Unable To Save Configuration<br><br>No Valid Adapter Specified<br>.'
# Check for valid output component
elif out_status is False:
statusText = 'Unable To Save Configuration<br><br>No Valid Publisher Specified<br>.'
else:
# translate the current config into a usable DAG
result = self.translate()
if result is False:
statusText = 'Error Translating Supplied Configuration'
# check the connectivity of the graph
elif not self.is_connected(inputs, outputs):
statusText = 'Unable To Save Project<br><br>Found Broken Path Between Adapter and Publisher.<br>'
else:
# Build the new workflow
try:
try:
# get the core count from the config
cores = int(config['cores'])
# has to be at least 1
if cores < 1:
cores = 1
except:
log.warning(
'Could not get core count from config.')
traceback.print_exc()
log.warning('Defaulting to core count of 1')
cores = 1
#log.info('Core count: %s' % cores)
self.Workflow = Dataflow(self.Graph, cores)
except:
statusText = 'Error Constructing Workflow'
else:
statusText = 'Project Successfully Saved'
# Save config here...
fp = None
try:
fp = open('projects/default.txt', 'w')
fp.write(jsconfig)
except:
log.error('Unable to save configuration')
else:
log.info('Configuration successfully saved')
finally:
if fp is not None:
fp.close()
return statusText
def run(self):
while True:
for line in self.receive_all('in'):
if self.regex.match(line):
self.send('out', line)
self.yield_ctrl()
class Printer(Component):
__metatype__ = 'PUBLISHER'
def __init__(self):
Component.__init__(self)
def run(self):
while True:
for data in self.receive_all('in'):
print data
self.yield_ctrl()
tail = Tail(open('/var/log/syslog', 'r'))
grep = Grep('.*pants.*')
printer = Printer()
pipe = Dataflow({tail: {grep: ('out', 'in')}, grep: {printer: ('out', 'in')}})
while True:
pipe.send(None)
time.sleep(0.1)
doubler2: ("out", "in")
},
}
return graph
if __name__ == '__main__':
quadrupler = pypes.component.HigherOrderComponent(
quadrupler_network_factory())
quadrupler.__metatype__ = "ADAPTER"
printer = Printer()
doubler = Doubler()
doubler.__metatype__ = "ADAPTER"
network = {
quadrupler: {
printer: ("out", "in"),
},
}
#network = {
#doubler: {
#printer: ("out", "in"),
#},
#}
from pypes.pipeline import Dataflow
pipeline = Dataflow(network)
for number in range(1, 5):
pipeline.send(number)
pipeline.close()
