diff options
author | Rafael H. Schloming <rhs@apache.org> | 2009-01-13 18:11:43 +0000 |
---|---|---|
committer | Rafael H. Schloming <rhs@apache.org> | 2009-01-13 18:11:43 +0000 |
commit | 7e34266b9a23f4536415bfbc3f161b84615b6550 (patch) | |
tree | 484008cf2d413f58b5e4ab80b373303c66200888 /RC9/qpid/python/examples/request-response | |
parent | 4612263ea692f00a4bd810438bdaf9bc88022091 (diff) | |
download | qpid-python-M4.tar.gz |
Tag M4 RC9M4
git-svn-id: https://svn.apache.org/repos/asf/qpid/tags/M4@734202 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'RC9/qpid/python/examples/request-response')
-rwxr-xr-x | RC9/qpid/python/examples/request-response/client.py | 131 | ||||
-rwxr-xr-x | RC9/qpid/python/examples/request-response/server.py | 110 | ||||
-rw-r--r-- | RC9/qpid/python/examples/request-response/verify | 24 | ||||
-rw-r--r-- | RC9/qpid/python/examples/request-response/verify.in | 14 |
4 files changed, 279 insertions, 0 deletions
diff --git a/RC9/qpid/python/examples/request-response/client.py b/RC9/qpid/python/examples/request-response/client.py new file mode 100755 index 0000000000..b29fcf3ea7 --- /dev/null +++ b/RC9/qpid/python/examples/request-response/client.py @@ -0,0 +1,131 @@ +#!/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. +# +""" + client.py + + Client for a client/server example + +""" + +import qpid +import sys +import os +from qpid.util import connect +from qpid.connection import Connection +from qpid.datatypes import Message, RangedSet, uuid4 +from qpid.queue import Empty + +#----- Functions ------------------------------------------- + +def dump_queue(queue_name): + + print "Messages on queue: " + queue_name + + message = 0 + + while True: + try: + message = queue.get(timeout=10) + content = message.body + session.message_accept(RangedSet(message.id)) + print "Response: " + content + except Empty: + print "No more messages!" + break + except: + print "Unexpected exception!" + break + + +#----- Initialization -------------------------------------- + + +# Set parameters for login + +host="127.0.0.1" +port=5672 +user="guest" +password="guest" + +# If an alternate host or port has been specified, use that instead +# (this is used in our unit tests) +if len(sys.argv) > 1 : + host=sys.argv[1] +if len(sys.argv) > 2 : + port=int(sys.argv[2]) + +# Create a connection. +socket = connect(host, port) +connection = Connection (sock=socket, username=user, password=password) +connection.start() +session = connection.session(str(uuid4())) + + +#----- Main Body -- ---------------------------------------- + +# Create a response queue for the server to send responses to. Use the +# same string as the name of the queue and the name of the routing +# key. + +reply_to = "reply_to:" + session.name +session.queue_declare(queue=reply_to, exclusive=True) +session.exchange_bind(exchange="amq.direct", queue=reply_to, binding_key=reply_to) + +# Create a local queue and subscribe it to the response queue + +local_queue_name = "local_queue" +queue = session.incoming(local_queue_name) + +# Call message_subscribe() to tell the broker to deliver messages from +# the server's reply_to queue to our local client queue. The server +# will start delivering messages as soon as message credit is +# available. + +session.message_subscribe(queue=reply_to, destination=local_queue_name) +queue.start() + +# Send some messages to the server's request queue + +lines = ["Twas brillig, and the slithy toves", + "Did gyre and gimble in the wabe.", + "All mimsy were the borogroves,", + "And the mome raths outgrabe."] + +# We will use the same reply_to and routing key +# for each message + +message_properties = session.message_properties() +message_properties.reply_to = session.reply_to("amq.direct", reply_to) +delivery_properties = session.delivery_properties(routing_key="request") + +for line in lines: + print "Request: " + line + session.message_transfer(destination="amq.direct", message=Message(message_properties, delivery_properties, line)) + +# Now see what messages the server sent to our reply_to queue + +dump_queue(reply_to) + + +#----- Cleanup ------------------------------------------------ + +# Clean up before exiting so there are no open threads. + +session.close(timeout=10) diff --git a/RC9/qpid/python/examples/request-response/server.py b/RC9/qpid/python/examples/request-response/server.py new file mode 100755 index 0000000000..a80c4541e4 --- /dev/null +++ b/RC9/qpid/python/examples/request-response/server.py @@ -0,0 +1,110 @@ +#!/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. +# +""" + server.py + + Server for a client/server example +""" + +import qpid +import sys +import os +from qpid.util import connect +from qpid.connection import Connection +from qpid.datatypes import Message, RangedSet, uuid4 +from qpid.queue import Empty + +#----- Functions ------------------------------------------- +def respond(session, request): + + # The routing key for the response is the request's reply-to + # property. The body for the response is the request's body, + # converted to upper case. + + message_properties = request.get("message_properties") + reply_to = message_properties.reply_to + if reply_to == None: + raise Exception("This message is missing the 'reply_to' property, which is required") + + props = session.delivery_properties(routing_key=reply_to["routing_key"]) + session.message_transfer(destination=reply_to["exchange"], message=Message(props,request.body.upper())) + +#----- Initialization -------------------------------------- + + +# Set parameters for login + +host="127.0.0.1" +port=5672 +user="guest" +password="guest" + +# If an alternate host or port has been specified, use that instead +# (this is used in our unit tests) +if len(sys.argv) > 1 : + host=sys.argv[1] +if len(sys.argv) > 2 : + port=int(sys.argv[2]) + +socket = connect(host, port) +connection = Connection (sock=socket, username=user, password=password) +connection.start() +session = connection.session(str(uuid4())) + +#----- Main Body -- ---------------------------------------- + +# Create a request queue and subscribe to it + +session.queue_declare(queue="request", exclusive=True) +session.exchange_bind(exchange="amq.direct", queue="request", binding_key="request") + +local_queue_name = "local_queue" + +session.message_subscribe(queue="request", destination=local_queue_name) + +queue = session.incoming(local_queue_name) +queue.start() + +# Remind the user to start the client program + +print "Request server running - run your client now." +print "(Times out after 100 seconds ...)" +sys.stdout.flush() + +# Respond to each request + +# If we get a message, send it back to the user (as indicated in the +# ReplyTo property) + +while True: + try: + request = queue.get(timeout=100) + respond(session, request) + session.message_accept(RangedSet(request.id)) + except Empty: + print "No more messages!" + break; + + +#----- Cleanup ------------------------------------------------ + +# Clean up before exiting so there are no open threads. + +session.close(timeout=10) diff --git a/RC9/qpid/python/examples/request-response/verify b/RC9/qpid/python/examples/request-response/verify new file mode 100644 index 0000000000..3c058febb2 --- /dev/null +++ b/RC9/qpid/python/examples/request-response/verify @@ -0,0 +1,24 @@ +# +# 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. +# + +# See https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid/bin/verify +background "Request server running" ./server.py +clients ./client.py +kill %% # Must kill the server. +outputs "./client.py.out | remove_uuid" " server.py.out | remove_uuid" diff --git a/RC9/qpid/python/examples/request-response/verify.in b/RC9/qpid/python/examples/request-response/verify.in new file mode 100644 index 0000000000..4c31128975 --- /dev/null +++ b/RC9/qpid/python/examples/request-response/verify.in @@ -0,0 +1,14 @@ +==== client.py.out | remove_uuid +Request: Twas brillig, and the slithy toves +Request: Did gyre and gimble in the wabe. +Request: All mimsy were the borogroves, +Request: And the mome raths outgrabe. +Messages on queue: reply_to: +Response: TWAS BRILLIG, AND THE SLITHY TOVES +Response: DID GYRE AND GIMBLE IN THE WABE. +Response: ALL MIMSY WERE THE BOROGROVES, +Response: AND THE MOME RATHS OUTGRABE. +No more messages! +==== server.py.out | remove_uuid +Request server running - run your client now. +(Times out after 100 seconds ...) |