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"""
Uses topic definition provider for arg1 messaging protocol. Compare with
main_kwargs.py which shows example using kwargs messaging protocol:
kwargs protocol provides for message data self-documentation and more
robustness (pubsub can determine if message data missing or unknown due
to type, etc).
Experiment by changing arg1_topics.py and looking at the output tree
in arg1_topics_out.py.
:copyright: Copyright since 2006 by Oliver Schoenborn, all rights reserved.
:license: BSD, see LICENSE.txt for details.
"""
from pubsub import setuparg1
from pubsub import pub
from pubsub.py2and3 import print_
import notifhandle
import exchandle
import arg1_topics
#***** actual application **********
print_('Using "arg1" messaging protocol of pubsub v3')
try:
print_('------- init ----------')
pub.addTopicDefnProvider( arg1_topics, pub.TOPIC_TREE_FROM_CLASS )
pub.setTopicUnspecifiedFatal()
import arg1_listeners
import arg1_senders as senders
print_('-----------------------')
senders.doSomething1()
senders.doSomething2()
print_('------- done ----------')
print_('Exporting topic tree to', arg1_topics.__name__)
pub.exportTopicTreeSpec('arg1_topics_out')
except Exception:
import traceback
traceback.print_exc()
print_(pub.exportTopicTreeSpec())
print_('------ exiting --------')
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