Author: gsim
Date: Wed Nov 5 19:50:14 2014
New Revision: 1636946
URL: http://svn.apache.org/r1636946
Log:
Basic link configuration mechanism and example demonstratign its use
Added:
qpid/proton/branches/examples/tutorial/selected_recv.py (with props)
Modified:
qpid/proton/branches/examples/tutorial/proton_events.py
Modified: qpid/proton/branches/examples/tutorial/proton_events.py
URL:
http://svn.apache.org/viewvc/qpid/proton/branches/examples/tutorial/proton_events.py?rev=1636946&r1=1636945&r2=1636946&view=diff
==============================================================================
--- qpid/proton/branches/examples/tutorial/proton_events.py (original)
+++ qpid/proton/branches/examples/tutorial/proton_events.py Wed Nov 5 19:50:14
2014
@@ -763,6 +763,47 @@ class Transaction(object):
self.handler.on_transaction_committed(event)
+class LinkOption(object):
+ def apply(self, link): pass
+ def test(self, link): return True
+
+class AtMostOnce(LinkOption):
+ def apply(self, link):
+ link.snd_settle_mode = Link.SND_SETTLED
+
+class AtLeastOnce(LinkOption):
+ def apply(self, link):
+ link.snd_settle_mode = Link.SND_UNSETTLED
+ link.rcv_settle_mode = Link.RCV_FIRST
+
+class SenderOption(LinkOption):
+ def apply(self, sender): pass
+ def test(self, link): return link.is_sender
+
+class ReceiverOption(LinkOption):
+ def apply(self, receiver): pass
+ def test(self, link): return link.is_receiver
+
+class Filter(ReceiverOption):
+ def __init__(self, filter_set={}):
+ self.filter_set = filter_set
+
+ def apply(self, receiver):
+ receiver.source.filter.put_dict(self.filter_set)
+
+class Selector(Filter):
+ def __init__(self, value, name='selector'):
+ super(Selector, self).__init__({symbol(name):
Described(symbol('apache.org:selector-filter:string'), value)})
+
+def _apply_link_options(options, link):
+ if options:
+ if isinstance(options, list):
+ for o in options:
+ if o.test(link): o.apply(link)
+ else:
+ if options.test(link): options.apply(link)
+
+
class MessagingContext(object):
def __init__(self, conn, handler=None, ssn=None):
self.conn = conn
@@ -780,9 +821,8 @@ class MessagingContext(object):
handler = property(_get_handler, _set_handler)
- def create_sender(self, target, source=None, name=None, handler=None,
tags=None):
+ def create_sender(self, target, source=None, name=None, handler=None,
tags=None, options=None):
snd = self._get_ssn().sender(name or self._get_id(target, source))
- snd.snd_settle_mode = Link.SND_SETTLED
if source:
snd.source.address = source
if target:
@@ -791,10 +831,11 @@ class MessagingContext(object):
snd.context = handler
snd.tags = tags or delivery_tags()
snd.send_msg = types.MethodType(_send_msg, snd)
+ _apply_link_options(options, snd)
snd.open()
return snd
- def create_receiver(self, source, target=None, name=None, dynamic=False,
handler=None):
+ def create_receiver(self, source, target=None, name=None, dynamic=False,
handler=None, options=None):
rcv = self._get_ssn().receiver(name or self._get_id(source, target))
if source:
rcv.source.address = source
@@ -804,6 +845,7 @@ class MessagingContext(object):
rcv.target.address = target
if handler:
rcv.context = handler
+ _apply_link_options(options, rcv)
rcv.open()
return rcv
Added: qpid/proton/branches/examples/tutorial/selected_recv.py
URL:
http://svn.apache.org/viewvc/qpid/proton/branches/examples/tutorial/selected_recv.py?rev=1636946&view=auto
==============================================================================
--- qpid/proton/branches/examples/tutorial/selected_recv.py (added)
+++ qpid/proton/branches/examples/tutorial/selected_recv.py Wed Nov 5 19:50:14
2014
@@ -0,0 +1,34 @@
+#!/usr/bin/env python
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+import proton_events
+
+class Recv(proton_events.ClientHandler):
+ def on_message(self, event):
+ print event.message.body
+
+try:
+ conn = proton_events.connect("localhost:5672", handler=Recv())
+ conn.create_receiver("examples", options=proton_events.Selector(u"colour =
'green'"))
+ proton_events.run()
+except KeyboardInterrupt: pass
+
+
+
Propchange: qpid/proton/branches/examples/tutorial/selected_recv.py
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