53 lines
2.0 KiB
Python
53 lines
2.0 KiB
Python
import sys
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import argparse
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import asyncio
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import random
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import syndicate
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from syndicate import patterns as P, actor, dataspace, turn
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from syndicate.schema import sturdy
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from preserves.schema import load_schema_file
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simpleChatProtocol = load_schema_file('./chat.bin').chat
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parser = argparse.ArgumentParser(description='Simple dataspace-server-mediated text chat.',
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formatter_class=argparse.ArgumentDefaultsHelpFormatter)
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parser.add_argument('--address', metavar='\'<tcp "HOST" PORT>\'',
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help='transport address of the server',
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default='<ws "ws://localhost:9001/">')
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parser.add_argument('--cap', metavar='\'<ref ...>\'',
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help='capability for the dataspace on the server',
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default='<ref {oid: "syndicate" sig: #[acowDB2/oI+6aSEC3YIxGg==]}>')
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args = parser.parse_args()
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Present = simpleChatProtocol.Present
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Says = simpleChatProtocol.Says
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@actor.run_system(name = 'chat', debug = False)
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def main():
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root_facet = turn.active_facet()
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@syndicate.relay.connect(args.address, sturdy.SturdyRef.decode(syndicate.parse(args.cap)))
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def on_connected(ds):
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turn.on_stop(lambda: turn.stop(root_facet))
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me = 'user_' + str(random.randint(10, 1000))
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turn.publish(ds, Present(me))
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@dataspace.during(ds, P.rec('Present', P.CAPTURE), inert_ok=True)
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def on_presence(who):
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print('%s joined' % (who,))
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turn.on_stop(lambda: print('%s left' % (who,)))
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@dataspace.on_message(ds, P.rec('Says', P.CAPTURE, P.CAPTURE))
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def on_says(who, what):
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print('%s says %r' % (who, what))
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@turn.linked_task()
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async def accept_input(f):
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reader = asyncio.StreamReader()
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await f.loop.connect_read_pipe(lambda: asyncio.StreamReaderProtocol(reader), sys.stdin)
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while line := (await reader.readline()).decode('utf-8'):
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turn.external(f, lambda: turn.send(ds, Says(me, line.strip())))
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