ail-framework/bin/ZMQ_Feed.py

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#!/usr/bin/env python2
# -*-coding:UTF-8 -*
"""
The ZMQ_Feed_Q Module
=====================
This module is consuming the Redis-list created by the ZMQ_Feed_Q Module,
And save the paste on disk to allow others modules to work on them.
..todo:: Be able to choose to delete or not the saved paste after processing.
..todo:: Store the empty paste (unprocessed) somewhere in Redis.
..note:: Module ZMQ_Something_Q and ZMQ_Something are closely bound, always put
the same Subscriber name in both of them.
Requirements
------------
*Need running Redis instances.
*Need the ZMQ_Feed_Q Module running to be able to work properly.
"""
import base64
import os
import time
from pubsublogger import publisher
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import Helper
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if __name__ == "__main__":
publisher.port = 6380
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publisher.channel = "Script"
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config_section = 'Feed'
config_channel = 'topicfilter'
subscriber_name = 'feed'
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h = Helper.Redis_Queues(config_section, config_channel, subscriber_name)
# Publisher
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pub_config_section = "PubSub_Global"
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pub_config_channel = 'channel'
h.zmq_pub(pub_config_section, pub_config_channel)
# LOGGING #
publisher.info("Feed Script started to receive & publish.")
while True:
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message = h.redis_rpop()
# Recovering the streamed message informations.
if message is not None:
if len(message.split()) == 3:
topic, paste, gzip64encoded = message.split()
print paste
else:
# TODO Store the name of the empty paste inside a Redis-list.
print "Empty Paste: not processed"
publisher.debug("Empty Paste: {0} not processed".format(paste))
continue
else:
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if h.redis_queue_shutdown():
print "Shutdown Flag Up: Terminating"
publisher.warning("Shutdown Flag Up: Terminating.")
break
print "Empty Queues: Waiting..."
time.sleep(10)
continue
# Creating the full filepath
filename = os.path.join(os.environ['AIL_HOME'],
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h.config.get("Directories", "pastes"), paste)
dirname = os.path.dirname(filename)
if not os.path.exists(dirname):
os.makedirs(dirname)
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with open(filename, 'wb') as f:
f.write(base64.standard_b64decode(gzip64encoded))
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h.zmq_pub_send(filename)