118 lines
4.2 KiB
Python
Executable File
118 lines
4.2 KiB
Python
Executable File
#!/usr/bin/env python
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'''
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Simple NORM file sender example app using Python NORM API
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'''
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import sys
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import os.path
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import pickle
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from optparse import OptionParser
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from random import randint
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import pynorm
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import pynorm.constants as c
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DEFAULT_ADDR = '224.1.2.3'
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DEFAULT_PORT = 6003
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def get_option_parser():
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parser = OptionParser()
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parser.set_defaults(address=DEFAULT_ADDR, port=DEFAULT_PORT)
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parser.add_option('-s', '--send',
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help='The file to send.')
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parser.add_option('-r', '--receive',
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help='The directory to cache recieved files.')
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parser.add_option('-a', '--address',
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help='The IP address to bind to (default %s)' % DEFAULT_ADDR)
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parser.add_option('-p', '--port', type=int,
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help='The port number to listen on (default %i)' % DEFAULT_PORT)
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parser.add_option('-i', '--iface',
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help='The inteface to transmit multicast on.')
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return parser
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def main(argv):
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(opts, args) = get_option_parser().parse_args(argv)
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if len(args) != 1:
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print 'Error: Invalid arguments'
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print get_option_parser().format_help()
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return 1
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if opts.send is None and opts.receive is None:
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print 'No operation specified!'
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print 'Must provide a --send or --receive flag!'
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print get_option_parser().format_help()
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return 1
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instance = pynorm.Instance()
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session = instance.createSession(opts.address, opts.port)
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if opts.iface:
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session.setMulticastInterface(opts.iface)
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session.setTxRate(256e10)
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session.startReceiver(1024*1024)
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session.startSender(randint(0, 1000), 1024**2, 1400, 64, 16)
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if opts.receive is not None:
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path = os.path.abspath(opts.receive)
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instance.setCacheDirectory(path)
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print 'Setting cache directory to %s' % path
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if opts.send is not None:
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filepath = os.path.abspath(opts.send)
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filename = opts.send[opts.send.rfind('/')+1:]
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print 'Sending file %s' % filename
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session.fileEnqueue(filepath, filename)
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try:
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for event in instance:
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if event.type == c.NORM_TX_FLUSH_COMPLETED:
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if event.object.type == c.NORM_OBJECT_FILE:
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print 'Flush completed for file %s' % event.object.filename
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elif event.type == c.NORM_RX_OBJECT_INFO:
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if event.object.type == c.NORM_OBJECT_FILE:
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event.object.filename = os.path.join(path, event.object.info)
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print 'Downloading file %s' % event.object.filename
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elif event.object.type == c.NORM_OBJECT_DATA:
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# I put the sender node ID in the info field
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# If it doesn't match ours, we dont care about it
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if int(event.object.info) != session.nodeId:
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event.object.cancel()
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elif event.type == c.NORM_RX_OBJECT_UPDATED:
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if event.object.type == c.NORM_OBJECT_FILE:
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print 'File %s - %i bytes left to download' % (
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event.object.filename, event.object.bytesPending)
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# Let the sender know how much we have done
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data = pickle.dumps((event.object.filename, event.object.bytesPending), -1)
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session.dataEnqueue(data, str(event.object.sender.id))
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elif event == 'NORM_RX_OBJECT_COMPLETED':
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if event.object.type == c.NORM_OBJECT_FILE:
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print 'File %s completed' % event.object.filename
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elif event.object.type == c.NORM_OBJECT_DATA:
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try:
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# This fails sometimes, not sure why yet, so ignore errors
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filename, pending = pickle.loads(event.object.accessData())
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except KeyError:
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continue
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print 'Node %i - File: %s - Pending: %i' % (event.object.sender.id, filename, pending)
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elif event == 'NORM_RX_OBJECT_ABORTED':
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if event.object.type == c.NORM_OBJECT_FILE:
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print 'File %s aborted' % event.object.filename
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except KeyboardInterrupt:
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pass
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print 'Exiting.'
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return 0
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# end main
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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