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46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
# notify.py - example of getting notifies
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#
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# Copyright (C) 2001-2010 Federico Di Gregorio <fog@debian.org>
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#
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# psycopg2 is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# psycopg2 is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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# License for more details.
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## put in DSN your DSN string
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DSN = 'dbname=test'
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## don't modify anything below this line (except for experimenting)
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import sys
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import select
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import psycopg2
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from psycopg2.extensions import ISOLATION_LEVEL_AUTOCOMMIT
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if len(sys.argv) > 1:
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DSN = sys.argv[1]
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print("Opening connection using dsn:", DSN)
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conn = psycopg2.connect(DSN)
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print("Encoding for this connection is", conn.encoding)
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conn.set_isolation_level(ISOLATION_LEVEL_AUTOCOMMIT)
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curs = conn.cursor()
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curs.execute("listen test")
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print("Waiting for 'NOTIFY test'")
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while 1:
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if select.select([conn],[],[],5)==([],[],[]):
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print("Timeout")
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else:
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conn.poll()
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while conn.notifies:
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print("Got NOTIFY:", conn.notifies.pop())
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