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"""
Uses topic definition provider for kwargs messaging protocol. Compare with
main_arg1.py which shows example using arg1 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 kwargs_topics_out.py.
:copyright: Copyright since 2006 by Oliver Schoenborn, all rights reserved.
:license: BSD, see LICENSE.txt for details.
"""
from pubsub import pub
from pubsub.py2and3 import print_
import notifhandle
import exchandle
import kwargs_topics
#***** actual application **********
print_('Using "kwargs" messaging protocol of pubsub v3')
try:
print_('------- init ----------')
pub.addTopicDefnProvider( kwargs_topics, pub.TOPIC_TREE_FROM_CLASS )
pub.setTopicUnspecifiedFatal()
import kwargs_listeners
import kwargs_senders as senders
print_('-----------------------')
senders.doSomething1()
senders.doSomething2()
print_('------- done ----------')
print_('Exporting topic tree to', kwargs_topics.__name__)
pub.exportTopicTreeSpec('kwargs_topics_out')
except Exception:
import traceback
traceback.print_exc()
print_(pub.exportTopicTreeSpec())
print_('------ exiting --------')
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