publisher/subscriber implementations

--HG--
branch : sandbox

src/subscriber/coop_eventlet.py

@@ -0,0 +1,58 @@
+# Copyright (c) 2011 Andreas Balogh
+# See LICENSE for details.
+
+""" prc_publish.eventlet
+
+Price Publisher
+"""
+
+# imports
+
+from argparse import ArgumentParser
+import eventlet
+import logging
+import os
+from eventlet.green import socket
+import sys
+import cPickle as pickle
+
+LOG = logging.getLogger()
+
+# definitions
+
+def main(argv=None):
+    if argv is None:
+        argv = sys.argv
+    LOG.info("starting '%s %s'", os.path.basename(argv[0]), " ".join(argv[1:]))
+    # parse options and arguments
+    parser = ArgumentParser(description="Price Publisher")
+    parser.add_argument("-f", "--file", dest="filename",
+                      help="read configuration from %(dest)s")
+    parser.add_argument("-p", "--port", default=8001, type=int,
+                      help="server port [default: %(default)s")
+    args = parser.parse_args()
+    print args
+    # application 
+    address = ('localhost', 8010)
+    while True:
+        subscriber(address)
+        eventlet.sleep(1)
+
+def subscriber(address):
+    try:
+        LOG.info("connecting to %s", address)
+        cx = eventlet.connect(address)
+    except socket.error, e:
+        LOG.error("%i %s", e.errno, e)
+        return
+    while True:
+        s = cx.recv(4096)
+        item = pickle.loads(s)
+        LOG.info("%s", item)
+
+
+if __name__ == '__main__':
+    logging.basicConfig(level=logging.DEBUG,
+                        format='%(asctime)s.%(msecs)03i %(levelname).4s %(funcName)10s: %(message)s',
+                        datefmt='%H:%M:%S')
+    main()