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#
# 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.
#
from qpid.client import Client, Closed
from qpid.queue import Empty
from qpid.datatypes import Message, RangedSet
from qpid.testlib import TestBase010
class TxTests(TestBase010):
"""
Tests for 'methods' on the amqp tx 'class'
"""
def test_commit(self):
"""
Test that commited publishes are delivered and commited acks are not re-delivered
"""
session = self.session
#declare queues and create subscribers in the checking session
#to ensure that the queues are not auto-deleted too early:
self.declare_queues(["tx-commit-a", "tx-commit-b", "tx-commit-c"])
session.message_subscribe(queue="tx-commit-a", destination="qa")
session.message_subscribe(queue="tx-commit-b", destination="qb")
session.message_subscribe(queue="tx-commit-c", destination="qc")
#use a separate session for actual work
session2 = self.conn.session("worker", 2)
self.perform_txn_work(session2, "tx-commit-a", "tx-commit-b", "tx-commit-c")
session2.tx_commit()
session2.close()
session.tx_select()
self.enable_flow("qa")
queue_a = session.incoming("qa")
self.enable_flow("qb")
queue_b = session.incoming("qb")
self.enable_flow("qc")
queue_c = session.incoming("qc")
#check results
for i in range(1, 5):
msg = queue_c.get(timeout=1)
self.assertEqual("TxMessage %d" % i, msg.body)
session.message_accept(RangedSet(msg.id))
msg = queue_b.get(timeout=1)
self.assertEqual("TxMessage 6", msg.body)
session.message_accept(RangedSet(msg.id))
msg = queue_a.get(timeout=1)
self.assertEqual("TxMessage 7", msg.body)
session.message_accept(RangedSet(msg.id))
for q in [queue_a, queue_b, queue_c]:
try:
extra = q.get(timeout=1)
self.fail("Got unexpected message: " + extra.body)
except Empty: None
#cleanup
session.tx_commit()
def test_auto_rollback(self):
"""
Test that a session closed with an open transaction is effectively rolled back
"""
session = self.session
self.declare_queues(["tx-autorollback-a", "tx-autorollback-b", "tx-autorollback-c"])
session.message_subscribe(queue="tx-autorollback-a", destination="qa")
session.message_subscribe(queue="tx-autorollback-b", destination="qb")
session.message_subscribe(queue="tx-autorollback-c", destination="qc")
session2 = self.conn.session("worker", 2)
queue_a, queue_b, queue_c, ignore = self.perform_txn_work(session2, "tx-autorollback-a", "tx-autorollback-b", "tx-autorollback-c")
for q in [queue_a, queue_b, queue_c]:
try:
extra = q.get(timeout=1)
self.fail("Got unexpected message: " + extra.body)
except Empty: None
session2.close()
session.tx_select()
self.enable_flow("qa")
queue_a = session.incoming("qa")
self.enable_flow("qb")
queue_b = session.incoming("qb")
self.enable_flow("qc")
queue_c = session.incoming("qc")
#check results
for i in range(1, 5):
msg = queue_a.get(timeout=1)
self.assertEqual("Message %d" % i, msg.body)
session.message_accept(RangedSet(msg.id))
msg = queue_b.get(timeout=1)
self.assertEqual("Message 6", msg.body)
session.message_accept(RangedSet(msg.id))
msg = queue_c.get(timeout=1)
self.assertEqual("Message 7", msg.body)
session.message_accept(RangedSet(msg.id))
for q in [queue_a, queue_b, queue_c]:
try:
extra = q.get(timeout=1)
self.fail("Got unexpected message: " + extra.body)
except Empty: None
#cleanup
session.tx_commit()
def test_rollback(self):
"""
Test that rolled back publishes are not delivered and rolled back acks are re-delivered
"""
session = self.session
queue_a, queue_b, queue_c, consumed = self.perform_txn_work(session, "tx-rollback-a", "tx-rollback-b", "tx-rollback-c")
for q in [queue_a, queue_b, queue_c]:
try:
extra = q.get(timeout=1)
self.fail("Got unexpected message: " + extra.body)
except Empty: None
session.tx_rollback()
#need to release messages to get them redelivered now:
session.message_release(consumed)
#check results
for i in range(1, 5):
msg = queue_a.get(timeout=1)
self.assertEqual("Message %d" % i, msg.body)
session.message_accept(RangedSet(msg.id))
msg = queue_b.get(timeout=1)
self.assertEqual("Message 6", msg.body)
session.message_accept(RangedSet(msg.id))
msg = queue_c.get(timeout=1)
self.assertEqual("Message 7", msg.body)
session.message_accept(RangedSet(msg.id))
for q in [queue_a, queue_b, queue_c]:
try:
extra = q.get(timeout=1)
self.fail("Got unexpected message: " + extra.body)
except Empty: None
#cleanup
session.tx_commit()
def perform_txn_work(self, session, name_a, name_b, name_c):
"""
Utility method that does some setup and some work under a transaction. Used for testing both
commit and rollback
"""
#setup:
self.declare_queues([name_a, name_b, name_c])
key = "my_key_" + name_b
topic = "my_topic_" + name_c
session.exchange_bind(queue=name_b, exchange="amq.direct", binding_key=key)
session.exchange_bind(queue=name_c, exchange="amq.topic", binding_key=topic)
dp = session.delivery_properties(routing_key=name_a)
for i in range(1, 5):
mp = session.message_properties(message_id="msg%d" % i)
session.message_transfer(message=Message(dp, mp, "Message %d" % i))
dp = session.delivery_properties(routing_key=key)
mp = session.message_properties(message_id="msg6")
session.message_transfer(destination="amq.direct", message=Message(dp, mp, "Message 6"))
dp = session.delivery_properties(routing_key=topic)
mp = session.message_properties(message_id="msg7")
session.message_transfer(destination="amq.topic", message=Message(dp, mp, "Message 7"))
session.tx_select()
#consume and ack messages
acked = RangedSet()
self.subscribe(session, queue=name_a, destination="sub_a")
queue_a = session.incoming("sub_a")
for i in range(1, 5):
msg = queue_a.get(timeout=1)
acked.add(msg.id)
self.assertEqual("Message %d" % i, msg.body)
self.subscribe(session, queue=name_b, destination="sub_b")
queue_b = session.incoming("sub_b")
msg = queue_b.get(timeout=1)
self.assertEqual("Message 6", msg.body)
acked.add(msg.id)
sub_c = self.subscribe(session, queue=name_c, destination="sub_c")
queue_c = session.incoming("sub_c")
msg = queue_c.get(timeout=1)
self.assertEqual("Message 7", msg.body)
acked.add(msg.id)
session.message_accept(acked)
dp = session.delivery_properties(routing_key=topic)
#publish messages
for i in range(1, 5):
mp = session.message_properties(message_id="tx-msg%d" % i)
session.message_transfer(destination="amq.topic", message=Message(dp, mp, "TxMessage %d" % i))
dp = session.delivery_properties(routing_key=key)
mp = session.message_properties(message_id="tx-msg6")
session.message_transfer(destination="amq.direct", message=Message(dp, mp, "TxMessage 6"))
dp = session.delivery_properties(routing_key=name_a)
mp = session.message_properties(message_id="tx-msg7")
session.message_transfer(message=Message(dp, mp, "TxMessage 7"))
return queue_a, queue_b, queue_c, acked
def declare_queues(self, names, session=None):
session = session or self.session
for n in names:
session.queue_declare(queue=n, auto_delete=True)
def subscribe(self, session=None, **keys):
session = session or self.session
consumer_tag = keys["destination"]
session.message_subscribe(**keys)
session.message_flow(destination=consumer_tag, unit=session.credit_unit.message, value=0xFFFFFFFFL)
session.message_flow(destination=consumer_tag, unit=session.credit_unit.byte, value=0xFFFFFFFFL)
def enable_flow(self, tag, session=None):
session = session or self.session
session.message_flow(destination=tag, unit=session.credit_unit.message, value=0xFFFFFFFFL)
session.message_flow(destination=tag, unit=session.credit_unit.byte, value=0xFFFFFFFFL)
def complete(self, session, msg):
session.receiver._completed.add(msg.id)#TODO: this may be done automatically
session.channel.session_completed(session.receiver._completed)
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