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authorRafael H. Schloming <rhs@apache.org>2009-01-13 18:11:43 +0000
committerRafael H. Schloming <rhs@apache.org>2009-01-13 18:11:43 +0000
commit7e34266b9a23f4536415bfbc3f161b84615b6550 (patch)
tree484008cf2d413f58b5e4ab80b373303c66200888 /RC9/qpid/python/examples/request-response
parent4612263ea692f00a4bd810438bdaf9bc88022091 (diff)
downloadqpid-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-xRC9/qpid/python/examples/request-response/client.py131
-rwxr-xr-xRC9/qpid/python/examples/request-response/server.py110
-rw-r--r--RC9/qpid/python/examples/request-response/verify24
-rw-r--r--RC9/qpid/python/examples/request-response/verify.in14
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 ...)