#!/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 os, signal, sys, time, imp, re, subprocess, glob, random, logging, shutil, math, unittest import traceback from qpid.messaging import Message, SessionError, NotFound, ConnectionError, ReceiverError, Connection, Timeout, Disposition, REJECTED, Empty, ServerError from qpid.datatypes import uuid4, UUID from brokertest import * from ha_test import * from threading import Thread, Lock, Condition from logging import getLogger, WARN, ERROR, DEBUG, INFO from qpidtoollibs import BrokerAgent, EventHelper log = getLogger(__name__) def grep(filename, regexp): for line in open(filename).readlines(): if (regexp.search(line)): return True return False class HaBrokerTest(BrokerTest): """Base class for HA broker tests""" def assert_log_no_errors(self, broker): log = broker.get_log() if grep(log, re.compile("] error|] critical")): self.fail("Errors in log file %s"%(log)) class ReplicationTests(HaBrokerTest): """Correctness tests for HA replication.""" def test_replication(self): """Test basic replication of configuration and messages before and after backup has connected""" def queue(name, replicate): return "%s;{create:always,node:{x-declare:{arguments:{'qpid.replicate':%s}}}}"%(name, replicate) def exchange(name, replicate, bindq, key): return "%s/%s;{create:always,node:{type:topic,x-declare:{arguments:{'qpid.replicate':%s}, type:'topic'},x-bindings:[{exchange:'%s',queue:'%s',key:'%s'}]}}"%(name, key, replicate, name, bindq, key) def setup(p, prefix, primary): """Create config, send messages on the primary p""" s = p.sender(queue(prefix+"q1", "all")) for m in ["a", "b", "1"]: s.send(Message(m)) # Test replication of dequeue self.assertEqual(p.receiver(prefix+"q1").fetch(timeout=0).content, "a") p.acknowledge() p.sender(queue(prefix+"q2", "configuration")).send(Message("2")) p.sender(queue(prefix+"q3", "none")).send(Message("3")) p.sender(exchange(prefix+"e1", "all", prefix+"q1", "key1")).send(Message("4")) p.sender(exchange(prefix+"e2", "configuration", prefix+"q2", "key2")).send(Message("5")) # Test unbind p.sender(queue(prefix+"q4", "all")).send(Message("6")) s3 = p.sender(exchange(prefix+"e4", "all", prefix+"q4", "key4")) s3.send(Message("7")) # Use old connection to unbind us = primary.connect_old().session(str(uuid4())) us.exchange_unbind(exchange=prefix+"e4", binding_key="key4", queue=prefix+"q4") p.sender(prefix+"e4").send(Message("drop1")) # Should be dropped # Test replication of deletes p.sender(queue(prefix+"dq", "all")) p.sender(exchange(prefix+"de", "all", prefix+"dq", "")) p.sender(prefix+"dq;{delete:always}").close() p.sender(prefix+"de;{delete:always}").close() # Need a marker so we can wait till sync is done. p.sender(queue(prefix+"x", "configuration")) def verify(b, prefix, p): """Verify setup was replicated to backup b""" # Wait for configuration to replicate. wait_address(b, prefix+"x"); self.assert_browse_retry(b, prefix+"q1", ["b", "1", "4"]) self.assertEqual(p.receiver(prefix+"q1").fetch(timeout=0).content, "b") p.acknowledge() self.assert_browse_retry(b, prefix+"q1", ["1", "4"]) self.assert_browse_retry(b, prefix+"q2", []) # configuration only assert not valid_address(b, prefix+"q3") # Verify exchange with replicate=all b.sender(prefix+"e1/key1").send(Message(prefix+"e1")) self.assert_browse_retry(b, prefix+"q1", ["1", "4", prefix+"e1"]) # Verify exchange with replicate=configuration b.sender(prefix+"e2/key2").send(Message(prefix+"e2")) self.assert_browse_retry(b, prefix+"q2", [prefix+"e2"]) b.sender(prefix+"e4/key4").send(Message("drop2")) # Verify unbind. self.assert_browse_retry(b, prefix+"q4", ["6","7"]) # Verify deletes assert not valid_address(b, prefix+"dq") assert not valid_address(b, prefix+"de") l = LogLevel(ERROR) # Hide expected WARNING log messages from failover. try: cluster = HaCluster(self, 2) primary = cluster[0] backup = cluster[1] p = primary.connect().session() # Send messages before re-starting the backup, test catch-up replication. cluster.kill(1, promote_next=False, final=False) setup(p, "1", primary) cluster.restart(1) # Send messages after re-starting the backup, to test steady-state replication. setup(p, "2", primary) # Verify the data on the backup b = backup.connect_admin().session() verify(b, "1", p) verify(b, "2", p) # Test a series of messages, enqueue all then dequeue all. s = p.sender(queue("foo","all")) wait_address(b, "foo") msgs = [str(i) for i in range(10)] for m in msgs: s.send(Message(m)) self.assert_browse_retry(p, "foo", msgs) self.assert_browse_retry(b, "foo", msgs) r = p.receiver("foo") for m in msgs: self.assertEqual(m, r.fetch(timeout=0).content) p.acknowledge() self.assert_browse_retry(p, "foo", []) self.assert_browse_retry(b, "foo", []) # Another series, this time verify each dequeue individually. for m in msgs: s.send(Message(m)) self.assert_browse_retry(p, "foo", msgs) self.assert_browse_retry(b, "foo", msgs) for i in range(len(msgs)): self.assertEqual(msgs[i], r.fetch(timeout=0).content) p.acknowledge() self.assert_browse_retry(p, "foo", msgs[i+1:]) self.assert_browse_retry(b, "foo", msgs[i+1:]) finally: l.restore() def test_sync(self): primary = HaBroker(self, name="primary") primary.promote() p = primary.connect().session() s = p.sender("q;{create:always}") for m in [str(i) for i in range(0,10)]: s.send(m) s.sync() backup1 = HaBroker(self, name="backup1", brokers_url=primary.host_port()) for m in [str(i) for i in range(10,20)]: s.send(m) s.sync() backup2 = HaBroker(self, name="backup2", brokers_url=primary.host_port()) for m in [str(i) for i in range(20,30)]: s.send(m) s.sync() msgs = [str(i) for i in range(30)] b1 = backup1.connect_admin().session() wait_address(b1, "q"); self.assert_browse_retry(b1, "q", msgs) b2 = backup2.connect_admin().session() wait_address(b2, "q"); self.assert_browse_retry(b2, "q", msgs) def test_send_receive(self): """Verify sequence numbers of messages sent by qpid-send""" l = LogLevel(ERROR) # Hide expected WARNING log messages from failover. try: brokers = HaCluster(self, 3) sender = self.popen( ["qpid-send", "--broker", brokers[0].host_port(), "--address", "q;{create:always}", "--messages=1000", "--content-string=x" ]) receiver = self.popen( ["qpid-receive", "--broker", brokers[0].host_port(), "--address", "q;{create:always}", "--messages=990", "--timeout=10" ]) self.assertEqual(sender.wait(), 0) self.assertEqual(receiver.wait(), 0) expect = [long(i) for i in range(991, 1001)] sn = lambda m: m.properties["sn"] brokers[1].assert_browse_backup("q", expect, transform=sn) brokers[2].assert_browse_backup("q", expect, transform=sn) finally: l.restore() def test_failover_python(self): """Verify that backups rejects connections and that fail-over works in python client""" l = LogLevel(ERROR) # Hide expected WARNING log messages from failover. try: primary = HaBroker(self, name="primary") primary.promote() backup = HaBroker(self, name="backup", brokers_url=primary.host_port()) # Check that backup rejects normal connections try: backup.connect().session() self.fail("Expected connection to backup to fail") except ConnectionError: pass # Check that admin connections are allowed to backup. backup.connect_admin().close() # Test discovery: should connect to primary after reject by backup c = backup.connect(reconnect_urls=[primary.host_port(), backup.host_port()], reconnect=True) s = c.session() sender = s.sender("q;{create:always}") backup.wait_backup("q") sender.send("foo") primary.kill() assert retry(lambda: not is_running(primary.pid)) backup.promote() sender.send("bar") self.assert_browse_retry(s, "q", ["foo", "bar"]) c.close() finally: l.restore() def test_failover_cpp(self): """Verify that failover works in the C++ client.""" cluster = HaCluster(self, 2) cluster[0].connect().session().sender("q;{create:always}") cluster[1].wait_backup("q") sender = NumberedSender(cluster[0], url=cluster.url, queue="q", failover_updates = False) receiver = NumberedReceiver(cluster[0], url=cluster.url, queue="q", failover_updates = False) receiver.start() sender.start() assert retry(lambda: receiver.received > 10) # Wait for some messages to get thru cluster.kill(0) n = receiver.received assert retry(lambda: receiver.received > n + 10) # Verify we are still going sender.stop() receiver.stop() def test_backup_failover(self): """Verify that a backup broker fails over and recovers queue state""" brokers = HaCluster(self, 3) brokers[0].connect().session().sender("q;{create:always}").send("a") for b in brokers[1:]: b.assert_browse_backup("q", ["a"], msg=b) brokers[0].expect = EXPECT_EXIT_FAIL brokers.kill(0) brokers[1].connect().session().sender("q").send("b") brokers[2].assert_browse_backup("q", ["a","b"]) s = brokers[1].connect().session() self.assertEqual("a", s.receiver("q").fetch().content) s.acknowledge() brokers[2].assert_browse_backup("q", ["b"]) def test_qpid_config_replication(self): """Set up replication via qpid-config""" brokers = HaCluster(self,2) brokers[0].config_declare("q","all") brokers[0].connect().session().sender("q").send("foo") brokers[1].assert_browse_backup("q", ["foo"]) def test_standalone_queue_replica(self): """Test replication of individual queues outside of cluster mode""" l = LogLevel(ERROR) # Hide expected WARNING log messages from failover. try: primary = HaBroker(self, name="primary", ha_cluster=False, args=["--ha-queue-replication=yes"]); pc = primary.connect() ps = pc.session().sender("q;{create:always}") pr = pc.session().receiver("q;{create:always}") backup = HaBroker(self, name="backup", ha_cluster=False, args=["--ha-queue-replication=yes"]) br = backup.connect().session().receiver("q;{create:always}") # Set up replication with qpid-ha backup.replicate(primary.host_port(), "q") ps.send("a", timeout=1) backup.assert_browse_backup("q", ["a"]) ps.send("b", timeout=1) backup.assert_browse_backup("q", ["a", "b"]) self.assertEqual("a", pr.fetch().content) pr.session.acknowledge() backup.assert_browse_backup("q", ["b"]) # Set up replication with qpid-config ps2 = pc.session().sender("q2;{create:always}") backup.config_replicate(primary.host_port(), "q2"); ps2.send("x", timeout=1) backup.assert_browse_backup("q2", ["x"]) finally: l.restore() def test_standalone_queue_replica_failover(self): """Test individual queue replication from a cluster to a standalone backup broker, verify it fails over.""" l = LogLevel(ERROR) # Hide expected WARNING log messages from failover. try: cluster = HaCluster(self, 2) primary = cluster[0] pc = cluster.connect(0) ps = pc.session().sender("q;{create:always}") pr = pc.session().receiver("q;{create:always}") backup = HaBroker(self, name="backup", ha_cluster=False, args=["--ha-queue-replication=yes"]) br = backup.connect().session().receiver("q;{create:always}") backup.replicate(cluster.url, "q") ps.send("a") backup.assert_browse_backup("q", ["a"]) cluster.bounce(0) backup.assert_browse_backup("q", ["a"]) ps.send("b") backup.assert_browse_backup("q", ["a", "b"]) cluster[0].wait_status("ready") cluster.bounce(1) self.assertEqual("a", pr.fetch().content) pr.session.acknowledge() backup.assert_browse_backup("q", ["b"]) pc.close() br.close() finally: l.restore() def test_lvq(self): """Verify that we replicate to an LVQ correctly""" cluster = HaCluster(self, 2) s = cluster[0].connect().session().sender("lvq; {create:always, node:{x-declare:{arguments:{'qpid.last_value_queue_key':lvq-key}}}}") def send(key,value,expect): s.send(Message(content=value,properties={"lvq-key":key}), timeout=1) cluster[1].assert_browse_backup("lvq", expect) send("a", "a-1", ["a-1"]) send("b", "b-1", ["a-1", "b-1"]) send("a", "a-2", ["b-1", "a-2"]) send("a", "a-3", ["b-1", "a-3"]) send("c", "c-1", ["b-1", "a-3", "c-1"]) send("c", "c-2", ["b-1", "a-3", "c-2"]) send("b", "b-2", ["a-3", "c-2", "b-2"]) send("c", "c-3", ["a-3", "b-2", "c-3"]) send("d", "d-1", ["a-3", "b-2", "c-3", "d-1"]) def test_ring(self): """Test replication with the ring queue policy""" """Verify that we replicate to an LVQ correctly""" cluster = HaCluster(self, 2) s = cluster[0].connect().session().sender("q; {create:always, node:{x-declare:{arguments:{'qpid.policy_type':ring, 'qpid.max_count':5}}}}") for i in range(10): s.send(Message(str(i))) cluster[1].assert_browse_backup("q", [str(i) for i in range(5,10)]) def test_reject(self): """Test replication with the reject queue policy""" cluster = HaCluster(self, 2) primary, backup = cluster s = primary.connect().session().sender("q; {create:always, node:{x-declare:{arguments:{'qpid.policy_type':reject, 'qpid.max_count':5}}}}") try: for i in range(10): s.send(Message(str(i)), sync=False) except qpid.messaging.exceptions.TargetCapacityExceeded: pass backup.assert_browse_backup("q", [str(i) for i in range(0,5)]) # Detach, don't close as there is a broken session s.session.connection.detach() def test_priority(self): """Verify priority queues replicate correctly""" cluster = HaCluster(self, 2) session = cluster[0].connect().session() s = session.sender("priority-queue; {create:always, node:{x-declare:{arguments:{'qpid.priorities':10}}}}") priorities = [8,9,5,1,2,2,3,4,9,7,8,9,9,2] for p in priorities: s.send(Message(priority=p)) # Can't use browse_backup as browser sees messages in delivery order not priority. cluster[1].wait_backup("priority-queue") r = cluster[1].connect_admin().session().receiver("priority-queue") received = [r.fetch().priority for i in priorities] self.assertEqual(sorted(priorities, reverse=True), received) def test_priority_fairshare(self): """Verify priority queues replicate correctly""" cluster = HaCluster(self, 2) primary, backup = cluster session = primary.connect().session() levels = 8 priorities = [4,5,3,7,8,8,2,8,2,8,8,16,6,6,6,6,6,6,8,3,5,8,3,5,5,3,3,8,8,3,7,3,7,7,7,8,8,8,2,3] limits={7:0,6:4,5:3,4:2,3:2,2:2,1:2} limit_policy = ",".join(["'qpid.fairshare':5"] + ["'qpid.fairshare-%s':%s"%(i[0],i[1]) for i in limits.iteritems()]) s = session.sender("priority-queue; {create:always, node:{x-declare:{arguments:{'qpid.priorities':%s, %s}}}}"%(levels,limit_policy)) messages = [Message(content=str(uuid4()), priority = p) for p in priorities] for m in messages: s.send(m) backup.wait_backup(s.target) r = backup.connect_admin().session().receiver("priority-queue") received = [r.fetch().content for i in priorities] sort = sorted(messages, key=lambda m: priority_level(m.priority, levels), reverse=True) fair = [m.content for m in fairshare(sort, lambda l: limits.get(l,0), levels)] self.assertEqual(received, fair) def test_priority_ring(self): cluster = HaCluster(self, 2) primary, backup = cluster s = primary.connect().session().sender("q; {create:always, node:{x-declare:{arguments:{'qpid.policy_type':ring, 'qpid.max_count':5, 'qpid.priorities':10}}}}") priorities = [8,9,5,1,2,2,3,4,9,7,8,9,9,2] for p in priorities: s.send(Message(priority=p)) expect = sorted(priorities,reverse=True)[0:5] primary.assert_browse("q", expect, transform=lambda m: m.priority) backup.assert_browse_backup("q", expect, transform=lambda m: m.priority) def test_backup_acquired(self): """Verify that acquired messages are backed up, for all queue types.""" class Test: def __init__(self, queue, arguments, expect): self.queue = queue self.address = "%s;{create:always,node:{x-declare:{arguments:{%s}}}}"%( self.queue, ",".join(arguments)) self.expect = [str(i) for i in expect] def send(self, connection): """Send messages, then acquire one but don't acknowledge""" s = connection.session() for m in range(10): s.sender(self.address).send(str(m), timeout=1) s.receiver(self.address, timeout=1).fetch() def verify(self, brokertest, backup): backup.assert_browse_backup(self.queue, self.expect, msg=self.queue) tests = [ Test("plain",[],range(10)), Test("ring", ["'qpid.policy_type':ring", "'qpid.max_count':5"], range(5,10)), Test("priority",["'qpid.priorities':10"], range(10)), Test("fairshare", ["'qpid.priorities':10,'qpid.fairshare':5"], range(10)), Test("lvq", ["'qpid.last_value_queue_key':lvq-key"], [9]) ] cluster = HaCluster(self, 3) cluster.kill(2, final=False) # restart after messages are sent to test catch-up c = cluster[0].connect() for t in tests: t.send(c) # Send messages, leave one unacknowledged. cluster.restart(2) cluster[2].wait_status("ready") # Verify acquired message was replicated for t in tests: t.verify(self, cluster[1]) for t in tests: t.verify(self, cluster[2]) def test_replicate_default(self): """Make sure we don't replicate if ha-replicate is unspecified or none""" cluster1 = HaCluster(self, 2, ha_replicate=None) cluster1[1].wait_status("ready") c1 = cluster1[0].connect().session().sender("q;{create:always}") cluster2 = HaCluster(self, 2, ha_replicate="none") cluster2[1].wait_status("ready") cluster2[0].connect().session().sender("q;{create:always}") time.sleep(.1) # Give replication a chance. try: cluster1[1].connect_admin().session().receiver("q") self.fail("Excpected no-such-queue exception") except NotFound: pass try: cluster2[1].connect_admin().session().receiver("q") self.fail("Excpected no-such-queue exception") except NotFound: pass def test_replicate_binding(self): """Verify that binding replication can be disabled""" cluster = HaCluster(self, 2) primary, backup = cluster[0], cluster[1] ps = primary.connect().session() ps.sender("ex;{create:always,node:{type:topic,x-declare:{arguments:{'qpid.replicate':all}, type:'fanout'}}}") ps.sender("q;{create:always,node:{type:queue,x-declare:{arguments:{'qpid.replicate':all}},x-bindings:[{exchange:'ex',queue:'q',key:'',arguments:{'qpid.replicate':none}}]}}") backup.wait_backup("q") primary.kill() assert retry(lambda: not is_running(primary.pid)) # Wait for primary to die backup.promote() bs = backup.connect_admin().session() bs.sender("ex").send(Message("msg")) self.assert_browse_retry(bs, "q", []) def test_invalid_replication(self): """Verify that we reject an attempt to declare a queue with invalid replication value.""" cluster = HaCluster(self, 1, ha_replicate="all") try: c = cluster[0].connect().session().sender("q;{create:always, node:{x-declare:{arguments:{'qpid.replicate':XXinvalidXX}}}}") self.fail("Expected ConnectionError") except ConnectionError: pass def test_exclusive_queue(self): """Ensure that we can back-up exclusive queues, i.e. the replicating subscriptions are exempt from the exclusivity""" cluster = HaCluster(self, 2) def test(addr): c = cluster[0].connect() q = addr.split(";")[0] r = c.session().receiver(addr) try: c.session().receiver(addr); self.fail("Expected exclusive exception") except ReceiverError: pass s = c.session().sender(q).send(q) cluster[1].assert_browse_backup(q, [q]) test("excl_sub;{create:always, link:{x-subscribe:{exclusive:True}}}"); test("excl_queue;{create:always, node:{x-declare:{exclusive:True}}}") def test_auto_delete_exclusive(self): """Verify that we ignore auto-delete, exclusive, non-auto-delete-timeout queues""" cluster = HaCluster(self, 2) s0 = cluster[0].connect().session() s0.receiver("exad;{create:always,node:{x-declare:{exclusive:True,auto-delete:True}}}") s0.receiver("ex;{create:always,node:{x-declare:{exclusive:True}}}") ad = s0.receiver("ad;{create:always,node:{x-declare:{auto-delete:True}}}") s0.receiver("time;{create:always,node:{x-declare:{exclusive:True,auto-delete:True,arguments:{'qpid.auto_delete_timeout':1}}}}") s0.receiver("q;{create:always}") s1 = cluster[1].connect_admin().session() cluster[1].wait_backup("q") assert not valid_address(s1, "exad") assert valid_address(s1, "ex") assert valid_address(s1, "ad") assert valid_address(s1, "time") # Verify that auto-delete queues are not kept alive by # replicating subscriptions ad.close() s0.sync() assert not valid_address(s0, "ad") def test_broker_info(self): """Check that broker information is correctly published via management""" cluster = HaCluster(self, 3) def ha_broker(broker): ha_broker = broker.agent().getHaBroker(); ha_broker.update() return ha_broker for broker in cluster: # Make sure HA system-id matches broker's self.assertEqual(ha_broker(broker).systemId, UUID(broker.agent().getBroker().systemRef)) # Check that all brokers have the same membership as the cluster def check_ids(broker): cluster_ids = set([ ha_broker(b).systemId for b in cluster]) broker_ids = set([m["system-id"] for m in ha_broker(broker).members]) assert retry(lambda: cluster_ids == broker_ids, 1), "%s != %s on %s"%(cluster_ids, broker_ids, broker) for broker in cluster: check_ids(broker) # Add a new broker, check it is updated everywhere b = cluster.start() for broker in cluster: check_ids(broker) def test_auth(self): """Verify that authentication does not interfere with replication.""" # TODO aconway 2012-07-09: generate test sasl config portably for cmake sasl_config=os.path.join(self.rootdir, "sasl_config") if not os.path.exists(sasl_config): print "WARNING: Skipping test, SASL test configuration %s not found."%sasl_config return acl=os.path.join(os.getcwd(), "policy.acl") aclf=file(acl,"w") # Minimum set of privileges required for the HA user. aclf.write(""" # HA user acl allow zag@QPID access queue acl allow zag@QPID create queue acl allow zag@QPID consume queue acl allow zag@QPID delete queue acl allow zag@QPID access exchange acl allow zag@QPID create exchange acl allow zag@QPID bind exchange acl allow zag@QPID publish exchange acl allow zag@QPID delete exchange acl allow zag@QPID access method acl allow zag@QPID create link # Normal user acl allow zig@QPID all all acl deny all all """) aclf.close() cluster = HaCluster( self, 2, args=["--auth", "yes", "--sasl-config", sasl_config, "--acl-file", acl, "--ha-username=zag", "--ha-password=zag", "--ha-mechanism=PLAIN" ], client_credentials=Credentials("zag", "zag", "PLAIN")) c = cluster[0].connect(username="zig", password="zig") s0 = c.session(); s0.sender("q;{create:always}") s0.sender("ex;{create:always,node:{type:topic,x-declare:{type:'fanout'},x-bindings:[{exchange:'ex',queue:'q'}]}}") s0.sender("ex").send("foo"); s1 = c.session(transactional=True) s1.sender("ex").send("foo-tx"); cluster[1].assert_browse_backup("q", ["foo"]) s1.commit() cluster[1].assert_browse_backup("q", ["foo", "foo-tx"]) def test_alternate_exchange(self): """Verify that alternate-exchange on exchanges and queues is propagated to new members of a cluster. """ cluster = HaCluster(self, 2) s = cluster[0].connect().session() # altex exchange: acts as alternate exchange s.sender("altex;{create:always,node:{type:topic,x-declare:{type:'fanout'}}}") # altq queue bound to altex, collect re-routed messages. s.sender("altq;{create:always,node:{x-bindings:[{exchange:'altex',queue:altq}]}}") # ex exchange with alternate-exchange altex and no queues bound s.sender("ex;{create:always,node:{type:topic, x-declare:{type:'direct', alternate-exchange:'altex'}}}") # create queue q with alternate-exchange altex s.sender("q;{create:always,node:{type:queue, x-declare:{alternate-exchange:'altex'}}}") # create a bunch of exchanges to ensure we don't clean up prematurely if the # response comes in multiple fragments. for i in xrange(200): s.sender("ex.%s;{create:always,node:{type:topic}}"%i) def verify(broker): s = broker.connect().session() # Verify unmatched message goes to ex's alternate. s.sender("ex").send("foo") altq = s.receiver("altq") self.assertEqual("foo", altq.fetch(timeout=0).content) s.acknowledge() # Verify rejected message goes to q's alternate. s.sender("q").send("bar") msg = s.receiver("q").fetch(timeout=0) self.assertEqual("bar", msg.content) s.acknowledge(msg, Disposition(REJECTED)) # Reject the message self.assertEqual("bar", altq.fetch(timeout=0).content) s.acknowledge() def ss(n): return cluster[n].connect().session() # Sanity check: alternate exchanges on original broker verify(cluster[0]) # Altex is in use as an alternate exchange. self.assertRaises(SessionError, lambda:ss(0).sender("altex;{delete:always}").close()) # Check backup that was connected during setup. cluster[1].wait_status("ready") cluster[1].wait_backup("ex") cluster[1].wait_backup("q") cluster.bounce(0) verify(cluster[1]) # Check a newly started backup. cluster.start() cluster[2].wait_status("ready") cluster[2].wait_backup("ex") cluster[2].wait_backup("q") cluster.bounce(1) verify(cluster[2]) # Check that alt-exchange in-use count is replicated s = cluster[2].connect().session(); self.assertRaises(SessionError, lambda:ss(2).sender("altex;{delete:always}").close()) s.sender("q;{delete:always}").close() self.assertRaises(SessionError, lambda:ss(2).sender("altex;{delete:always}").close()) s.sender("ex;{delete:always}").close() s.sender("altex;{delete:always}").close() def test_priority_reroute(self): """Regression test for QPID-4262, rerouting messages from a priority queue to itself causes a crash""" cluster = HaCluster(self, 2) primary = cluster[0] session = primary.connect().session() s = session.sender("pq; {create:always, node:{x-declare:{arguments:{'qpid.priorities':10}},x-bindings:[{exchange:'amq.fanout',queue:pq}]}}") for m in xrange(100): s.send(Message(str(m), priority=m%10)) pq = QmfAgent(primary.host_port()).getQueue("pq") pq.reroute(request=0, useAltExchange=False, exchange="amq.fanout") # Verify that consuming is in priority order expect = [str(10*i+p) for p in xrange(9,-1,-1) for i in xrange(0,10) ] actual = [m.content for m in primary.get_messages("pq", 100)] self.assertEqual(expect, actual) def test_delete_missing_response(self): """Check that a backup correctly deletes leftover queues and exchanges that are missing from the initial reponse set.""" # This test is a bit contrived, we set up the situation on backup brokers # and then promote one. cluster = HaCluster(self, 2, promote=False) # cluster[0] Will be the primary s = cluster[0].connect_admin().session() s.sender("q1;{create:always}") s.sender("e1;{create:always, node:{type:topic}}") # cluster[1] will be the backup, has extra queues/exchanges xdecl = "x-declare:{arguments:{'qpid.replicate':'all'}}" node = "node:{%s}"%(xdecl) s = cluster[1].connect_admin().session() s.sender("q1;{create:always, %s}"%(node)) s.sender("q2;{create:always, %s}"%(node)) s.sender("e1;{create:always, node:{type:topic, %s}}"%(xdecl)) s.sender("e2;{create:always, node:{type:topic, %s}}"%(xdecl)) for a in ["q1", "q2", "e1", "e2"]: cluster[1].wait_backup(a) cluster[0].promote() # Verify the backup deletes the surplus queue and exchange cluster[1].wait_status("ready") s = cluster[1].connect_admin().session() self.assertRaises(NotFound, s.receiver, ("q2")); self.assertRaises(NotFound, s.receiver, ("e2")); def test_delete_qpid_4285(self): """Regression test for QPID-4285: on deleting a queue it gets stuck in a partially deleted state and causes replication errors.""" cluster = HaCluster(self,2) s = cluster[0].connect().session() s.receiver("q;{create:always}") cluster[1].wait_backup("q") cluster.kill(0) # Make the backup take over. s = cluster[1].connect().session() s.receiver("q;{delete:always}").close() # Delete q on new primary try: s.receiver("q") self.fail("Expected NotFound exception") # Should not be avaliable except NotFound: pass assert not cluster[1].agent().getQueue("q") # Should not be in QMF def alt_setup(self, session, suffix): # Create exchange to use as alternate and a queue bound to it. # altex exchange: acts as alternate exchange session.sender("altex%s;{create:always,node:{type:topic,x-declare:{type:'fanout'}}}"%(suffix)) # altq queue bound to altex, collect re-routed messages. session.sender("altq%s;{create:always,node:{x-bindings:[{exchange:'altex%s',queue:altq%s}]}}"%(suffix,suffix,suffix)) def test_auto_delete_close(self): """Verify auto-delete queues are deleted on backup if auto-deleted on primary""" cluster=HaCluster(self, 2) p = cluster[0].connect().session() self.alt_setup(p, "1") r = p.receiver("adq1;{create:always,node:{x-declare:{auto-delete:True,alternate-exchange:'altex1'}}}", capacity=1) s = p.sender("adq1") for m in ["aa","bb","cc"]: s.send(m) p.sender("adq2;{create:always,node:{x-declare:{auto-delete:True}}}") cluster[1].wait_queue("adq1") cluster[1].wait_queue("adq2") r.close() # trigger auto-delete of adq1 cluster[1].wait_no_queue("adq1") cluster[1].assert_browse_backup("altq1", ["aa","bb","cc"]) cluster[1].wait_queue("adq2") def test_auto_delete_crash(self): """Verify auto-delete queues are deleted on backup if the primary crashes""" cluster=HaCluster(self, 2) p = cluster[0].connect().session() self.alt_setup(p,"1") # adq1 is subscribed so will be auto-deleted. r = p.receiver("adq1;{create:always,node:{x-declare:{auto-delete:True,alternate-exchange:'altex1'}}}", capacity=1) s = p.sender("adq1") for m in ["aa","bb","cc"]: s.send(m) # adq2 is subscribed after cluster[2] starts. p.sender("adq2;{create:always,node:{x-declare:{auto-delete:True}}}") # adq3 is never subscribed. p.sender("adq3;{create:always,node:{x-declare:{auto-delete:True}}}") cluster.start() cluster[2].wait_status("ready") p.receiver("adq2") # Subscribed after cluster[2] joined for q in ["adq1","adq2","adq3","altq1"]: cluster[1].wait_queue(q) for q in ["adq1","adq2","adq3","altq1"]: cluster[2].wait_queue(q) cluster[0].kill() cluster[1].wait_no_queue("adq1") cluster[1].wait_no_queue("adq2") cluster[1].wait_queue("adq3") cluster[2].wait_no_queue("adq1") cluster[2].wait_no_queue("adq2") cluster[2].wait_queue("adq3") cluster[1].assert_browse_backup("altq1", ["aa","bb","cc"]) cluster[2].assert_browse_backup("altq1", ["aa","bb","cc"]) def test_auto_delete_timeout(self): cluster = HaCluster(self, 2) # Test timeout r1 = cluster[0].connect().session().receiver("q1;{create:always,node:{x-declare:{auto-delete:True,arguments:{'qpid.auto_delete_timeout':1}}}}") # Test special case of timeout = 0 r0 = cluster[0].connect().session().receiver("q0;{create:always,node:{x-declare:{auto-delete:True,arguments:{'qpid.auto_delete_timeout':0}}}}") cluster[1].wait_queue("q0") cluster[1].wait_queue("q1") cluster[0].kill() cluster[1].wait_queue("q1") # Not timed out yet cluster[1].wait_no_queue("q1", timeout=5) # Wait for timeout cluster[1].wait_no_queue("q0", timeout=5) # Wait for timeout def test_alt_exchange_dup(self): """QPID-4349: if a queue has an alterante exchange and is deleted the messages appear twice on the alternate, they are rerouted once by the primary and again by the backup.""" cluster = HaCluster(self,2) # Set up q with alternate exchange altex bound to altq. s = cluster[0].connect().session() s.sender("altex;{create:always,node:{type:topic,x-declare:{type:'fanout'}}}") s.sender("altq;{create:always,node:{x-bindings:[{exchange:'altex',queue:altq}]}}") snd = s.sender("q;{create:always,node:{x-declare:{alternate-exchange:'altex'}}}") messages = [ str(n) for n in xrange(10) ] for m in messages: snd.send(m) cluster[1].assert_browse_backup("q", messages) s.sender("q;{delete:always}").close() cluster[1].assert_browse_backup("altq", messages) def test_expired(self): """Regression test for QPID-4379: HA does not properly handle expired messages""" # Race between messages expiring and HA replicating consumer. cluster = HaCluster(self, 2) s = cluster[0].connect().session().sender("q;{create:always}", capacity=2) def send_ttl_messages(): for i in xrange(100): s.send(Message(str(i), ttl=0.001), timeout=1) send_ttl_messages() cluster.start() send_ttl_messages() def test_stale_response(self): """Check for race condition where a stale response is processed after an event for the same queue/exchange """ cluster = HaCluster(self, 2) s = cluster[0].connect().session() s.sender("keep;{create:always}") # Leave this queue in place. for i in xrange(100): s.sender("deleteme%s;{create:always,delete:always}"%(i)).close() # It is possible for the backup to attempt to subscribe after the queue # is deleted. This is not an error, but is logged as an error on the primary. # The backup does not log this as an error so we only check the backup log for errors. self.assert_log_no_errors(cluster[1]) def test_missed_recreate(self): """If a queue or exchange is destroyed and one with the same name re-created while a backup is disconnected, the backup should also delete/recreate the object when it re-connects""" cluster = HaCluster(self, 3) sn = cluster[0].connect().session() # Create a queue with messages s = sn.sender("qq;{create:always}") msgs = [str(i) for i in xrange(3)] for m in msgs: s.send(m) cluster[1].assert_browse_backup("qq", msgs) cluster[2].assert_browse_backup("qq", msgs) # Set up an exchange with a binding. sn.sender("xx;{create:always,node:{type:topic}}") sn.sender("xxq;{create:always,node:{x-bindings:[{exchange:'xx',queue:'xxq',key:xxq}]}}") cluster[1].wait_address("xx") self.assertEqual(cluster[1].agent().getExchange("xx").values["bindingCount"], 1) cluster[2].wait_address("xx") self.assertEqual(cluster[2].agent().getExchange("xx").values["bindingCount"], 1) # Simulate the race by re-creating the objects before promoting the new primary cluster.kill(0, promote_next=False) xdecl = "x-declare:{arguments:{'qpid.replicate':'all'}}" node = "node:{%s}"%(xdecl) sn = cluster[1].connect_admin().session() sn.sender("qq;{delete:always}").close() s = sn.sender("qq;{create:always, %s}"%(node)) s.send("foo") sn.sender("xx;{delete:always}").close() sn.sender("xx;{create:always,node:{type:topic,%s}}"%(xdecl)) cluster[1].promote() cluster[1].wait_status("active") # Verify we are not still using the old objects on cluster[2] cluster[2].assert_browse_backup("qq", ["foo"]) cluster[2].wait_address("xx") self.assertEqual(cluster[2].agent().getExchange("xx").values["bindingCount"], 0) def test_redeclare_exchange(self): """Ensure that re-declaring an exchange is an HA no-op""" cluster = HaCluster(self, 2) ps = cluster[0].connect().session() ps.sender("ex1;{create:always,node:{type:topic,x-declare:{arguments:{'qpid.replicate':all}, type:'fanout'}}}") ps.sender("ex2;{create:always,node:{type:topic,x-declare:{arguments:{'qpid.replicate':all}, type:'fanout', alternate-exchange:'ex1'}}}") cluster[1].wait_backup("ex1") cluster[1].wait_backup("ex2") # Use old API to re-declare the exchange old_conn = cluster[0].connect_old() old_sess = old_conn.session(str(qpid.datatypes.uuid4())) old_sess.exchange_declare(exchange='ex1', type='fanout') cluster[1].wait_backup("ex1") def fairshare(msgs, limit, levels): """ Generator to return prioritised messages in expected order for a given fairshare limit """ count = 0 last_priority = None postponed = [] while msgs or postponed: if not msgs: msgs = postponed count = 0 last_priority = None postponed = [ ] msg = msgs.pop(0) if last_priority and priority_level(msg.priority, levels) == last_priority: count += 1 else: last_priority = priority_level(msg.priority, levels) count = 1 l = limit(last_priority) if (l and count > l): postponed.append(msg) else: yield msg return def priority_level(value, levels): """ Method to determine which of a distinct number of priority levels a given value falls into. """ offset = 5-math.ceil(levels/2.0) return min(max(value - offset, 0), levels-1) class LongTests(HaBrokerTest): """Tests that can run for a long time if -DDURATION= is set""" def duration(self): d = self.config.defines.get("DURATION") if d: return float(d)*60 else: return 3 # Default is to be quick def test_failover_send_receive(self): """Test failover with continuous send-receive""" brokers = HaCluster(self, 3) # Start sender and receiver threads n = 10 senders = [ NumberedSender( brokers[0], url=brokers.url,max_depth=50, failover_updates=False, queue="test%s"%(i), args=["--capacity=10"]) for i in xrange(n)] receivers = [ NumberedReceiver( brokers[0], url=brokers.url, sender=senders[i],failover_updates=False, queue="test%s"%(i), args=["--capacity=10"]) for i in xrange(n)] for r in receivers: r.start() for s in senders: s.start() def wait_passed(r, n): """Wait for receiver r to pass n""" def check(): r.check() # Verify no exceptions return r.received > n + 100 assert retry(check), "Stalled %s waiting for %s, sent %s"%( r.queue, n, [s for s in senders if s.queue==r.queue][0].sent) for r in receivers: wait_passed(r, 0) # Kill and restart brokers in a cycle: endtime = time.time() + self.duration() i = 0 primary = 0 try: try: while time.time() < endtime or i < 3: # At least 3 iterations # Precondition: All 3 brokers running, # primary = index of promoted primary # one or two backups are running, for s in senders: s.sender.assert_running() for r in receivers: r.receiver.assert_running() checkpoint = [ r.received+10 for r in receivers ] victim = random.choice([0,1,2,primary]) # Give the primary a better chance. if victim == primary: # Don't kill primary till it is active and the next # backup is ready, otherwise we can lose messages. brokers[victim].wait_status("active") next = (victim+1)%3 brokers[next].wait_status("ready") brokers.bounce(victim) # Next one is promoted primary = next else: brokers.bounce(victim, promote_next=False) # Make sure we are not stalled map(wait_passed, receivers, checkpoint) # Run another checkpoint to ensure things work in this configuration checkpoint = [ r.received+10 for r in receivers ] map(wait_passed, receivers, checkpoint) i += 1 except: traceback.print_exc() raise finally: for s in senders: s.stop() for r in receivers: r.stop() dead = filter(lambda b: not b.is_running(), brokers) if dead: raise Exception("Brokers not running: %s"%dead) def test_qmf_order(self): """QPID 4402: HA QMF events can be out of order. This test mimics the test described in the JIRA. Two threads repeatedly declare the same auto-delete queue and close their connection. """ broker = Broker(self) class Receiver(Thread): def __init__(self, qname): Thread.__init__(self) self.qname = qname self.stopped = False def run(self): while not self.stopped: self.connection = broker.connect() try: self.connection.session().receiver( self.qname+";{create:always,node:{x-declare:{auto-delete:True}}}") except NotFound: pass # Can occur occasionally, not an error. try: self.connection.close() except: pass class QmfObject(object): """Track existance of an object and validate QMF events""" def __init__(self, type_name, name_field, name): self.type_name, self.name_field, self.name = type_name, name_field, name self.exists = False def qmf_event(self, event): content = event.content[0] event_type = content['_schema_id']['_class_name'] values = content['_values'] if event_type == self.type_name+"Declare" and values[self.name_field] == self.name: disp = values['disp'] log.debug("Event %s: disp=%s exists=%s"%( event_type, values['disp'], self.exists)) if self.exists: assert values['disp'] == 'existing' else: assert values['disp'] == 'created' self.exists = True elif event_type == self.type_name+"Delete" and values[self.name_field] == self.name: log.debug("Event %s: exists=%s"%(event_type, self.exists)) assert self.exists self.exists = False # Verify order of QMF events. helper = EventHelper() r = broker.connect().session().receiver(helper.eventAddress()) threads = [Receiver("qq"), Receiver("qq")] for t in threads: t.start() queue = QmfObject("queue", "qName", "qq") finish = time.time() + self.duration() try: while time.time() < finish: queue.qmf_event(r.fetch()) finally: for t in threads: t.stopped = True; t.join() class RecoveryTests(HaBrokerTest): """Tests for recovery after a failure.""" def test_queue_hold(self): """Verify that the broker holds queues without sufficient backup, i.e. does not complete messages sent to those queues.""" l = LogLevel(ERROR) # Hide expected WARNING log messages from failover. try: # We don't want backups to time out for this test, set long timeout. cluster = HaCluster(self, 4, args=["--ha-backup-timeout=120"]); # Wait for the primary to be ready cluster[0].wait_status("active") for b in cluster[1:4]: b.wait_status("ready") # Create a queue before the failure. s1 = cluster.connect(0).session().sender("q1;{create:always}") for b in cluster: b.wait_backup("q1") for i in xrange(10): s1.send(str(i), timeout=0.1) # Kill primary and 2 backups cluster[3].wait_status("ready") for i in [0,1,2]: cluster.kill(i, promote_next=False, final=False) cluster[3].promote() # New primary, backups will be 1 and 2 cluster[3].wait_status("recovering") def assertSyncTimeout(s): try: s.sync(timeout=.01) self.fail("Expected Timeout exception") except Timeout: pass # Create a queue after the failure s2 = cluster.connect(3).session().sender("q2;{create:always}") # Verify that messages sent are not completed for i in xrange(10,20): s1.send(str(i), sync=False, timeout=0.1); s2.send(str(i), sync=False, timeout=0.1) assertSyncTimeout(s1) self.assertEqual(s1.unsettled(), 10) assertSyncTimeout(s2) self.assertEqual(s2.unsettled(), 10) # Verify we can receive even if sending is on hold: cluster[3].assert_browse("q1", [str(i) for i in range(10)]) # Restart backups, verify queues are released only when both backups are up cluster.restart(1) assertSyncTimeout(s1) self.assertEqual(s1.unsettled(), 10) assertSyncTimeout(s2) self.assertEqual(s2.unsettled(), 10) cluster.restart(2) cluster.restart(0) # Verify everything is up to date and active def settled(sender): sender.sync(timeout=1); return sender.unsettled() == 0; assert retry(lambda: settled(s1)), "Unsetttled=%s"%(s1.unsettled()) assert retry(lambda: settled(s2)), "Unsetttled=%s"%(s2.unsettled()) cluster[1].assert_browse_backup("q1", [str(i) for i in range(10)+range(10,20)]) cluster[1].assert_browse_backup("q2", [str(i) for i in range(10,20)]) cluster[3].wait_status("active"), s1.session.connection.close() s2.session.connection.close() finally: l.restore() def test_expected_backup_timeout(self): """Verify that we time-out expected backups and release held queues after a configured interval. Verify backup is demoted to catch-up, but can still rejoin. """ cluster = HaCluster(self, 3, args=["--ha-backup-timeout=0.5"]); for i in [0,1]: cluster.kill(i, False) cluster[2].promote() # New primary, expected backup will be 1 # Should not go active till the expected backup connects or times out. cluster[2].wait_status("recovering") # Messages should be held till expected backup times out s = cluster[2].connect().session().sender("q;{create:always}") s.send("foo", sync=False) # Verify message held initially. try: s.sync(timeout=.01); self.fail("Expected Timeout exception") except Timeout: pass s.sync(timeout=1) # And released after the timeout. cluster[2].wait_status("active") def test_join_ready_cluster(self): """If we join a cluster where the primary is dead, the new primary is not yet promoted and there are ready backups then we should refuse promotion so that one of the ready backups can be chosen.""" cluster = HaCluster(self, 2) cluster[0].wait_status("active") cluster[1].wait_status("ready") cluster.bounce(0, promote_next=False) self.assertRaises(Exception, cluster[0].promote) os.kill(cluster[1].pid, signal.SIGSTOP) # Test for timeout if unresponsive. cluster.bounce(0, promote_next=False) cluster[0].promote() class ConfigurationTests(HaBrokerTest): """Tests for configuration settings.""" def test_client_broker_url(self): """Check that setting of broker and public URLs obeys correct defaulting and precedence""" def check(broker, brokers, public): qmf = broker.qmf() self.assertEqual(brokers, qmf.brokersUrl) self.assertEqual(public, qmf.publicUrl) def start(brokers, public, known=None): args=[] if brokers: args.append("--ha-brokers-url="+brokers) if public: args.append("--ha-public-url="+public) if known: args.append("--known-hosts-url="+known) return HaBroker(self, args=args) # Both set explictily, no defaulting b = start("foo:123", "bar:456") check(b, "amqp:tcp:foo:123", "amqp:tcp:bar:456") b.set_brokers_url("foo:999") check(b, "amqp:tcp:foo:999", "amqp:tcp:bar:456") b.set_public_url("bar:999") check(b, "amqp:tcp:foo:999", "amqp:tcp:bar:999") # Allow "none" to mean "not set" b = start("none", "none") check(b, "", "") def test_failover_exchange(self): """Verify that the failover exchange correctly reports cluster membership""" def strip_url(url): return re.sub('amqp:|tcp:', '', url) def assert_url(m, url): urls = m.properties['amq.failover'] self.assertEqual(1, len(urls)) self.assertEqual(strip_url(urls[0]), url) cluster = HaCluster(self, 1, args=["--ha-public-url=foo:1234"]) r = cluster[0].connect().session().receiver("amq.failover") assert_url(r.fetch(1), "foo:1234") cluster[0].set_public_url("bar:1234") assert_url(r.fetch(1), "bar:1234") cluster[0].set_brokers_url(cluster.url+",xxx:1234") self.assertRaises(Empty, r.fetch, 0) # Not updated for brokers URL class StoreTests(HaBrokerTest): """Test for HA with persistence.""" def check_skip(self): if not BrokerTest.store_lib: print "WARNING: skipping HA+store tests, no store lib found." return not BrokerTest.store_lib def test_store_recovery(self): """Verify basic store and recover functionality""" if self.check_skip(): return cluster = HaCluster(self, 1) sn = cluster[0].connect().session() # Create queue qq, exchange exx and binding between them s = sn.sender("qq;{create:always,node:{durable:true}}") sk = sn.sender("exx/k;{create:always,node:{type:topic, durable:true, x-declare:{type:'direct'}, x-bindings:[{exchange:exx,key:k,queue:qq}]}}") for m in ["foo", "bar", "baz"]: s.send(Message(m, durable=True)) r = cluster[0].connect().session().receiver("qq") self.assertEqual(r.fetch().content, "foo") r.session.acknowledge() # Sending this message is a hack to flush the dequeue operation on qq. s.send(Message("flush", durable=True)) def verify(broker, x_count): sn = broker.connect().session() assert_browse(sn, "qq", [ "bar", "baz", "flush" ]+ (x_count)*["x"]) sn.sender("exx/k").send(Message("x", durable=True)) assert_browse(sn, "qq", [ "bar", "baz", "flush" ]+ (x_count+1)*["x"]) verify(cluster[0], 0) # Sanity check cluster.bounce(0) cluster[0].wait_status("active") verify(cluster[0], 1) # Loaded from store cluster.start() cluster[1].wait_status("ready") cluster.kill(0) cluster[1].wait_status("active") verify(cluster[1], 2) cluster.bounce(1, promote_next=False) cluster[1].promote() cluster[1].wait_status("active") verify(cluster[1], 3) def test_catchup_store(self): """Verify that a backup erases queue data from store recovery before doing catch-up from the primary.""" if self.check_skip(): return cluster = HaCluster(self, 2) sn = cluster[0].connect(heartbeat=HaBroker.heartbeat).session() s1 = sn.sender("q1;{create:always,node:{durable:true}}") for m in ["foo","bar"]: s1.send(Message(m, durable=True)) s2 = sn.sender("q2;{create:always,node:{durable:true}}") sk2 = sn.sender("ex/k2;{create:always,node:{type:topic, durable:true, x-declare:{type:'direct'}, x-bindings:[{exchange:ex,key:k2,queue:q2}]}}") sk2.send(Message("hello", durable=True)) # Wait for backup to catch up. cluster[1].assert_browse_backup("q1", ["foo","bar"]) cluster[1].assert_browse_backup("q2", ["hello"]) # Make changes that the backup doesn't see cluster.kill(1, promote_next=False, final=False) r1 = cluster[0].connect(heartbeat=HaBroker.heartbeat).session().receiver("q1") for m in ["foo", "bar"]: self.assertEqual(r1.fetch().content, m) r1.session.acknowledge() for m in ["x","y","z"]: s1.send(Message(m, durable=True)) # Use old connection to unbind us = cluster[0].connect_old().session(str(uuid4())) us.exchange_unbind(exchange="ex", binding_key="k2", queue="q2") us.exchange_bind(exchange="ex", binding_key="k1", queue="q1") # Restart both brokers from store to get inconsistent sequence numbering. cluster.bounce(0, promote_next=False) cluster[0].promote() cluster[0].wait_status("active") cluster.restart(1) cluster[1].wait_status("ready") # Verify state cluster[0].assert_browse("q1", ["x","y","z"]) cluster[1].assert_browse_backup("q1", ["x","y","z"]) sn = cluster[0].connect(heartbeat=HaBroker.heartbeat).session() sn.sender("ex/k1").send("boo") cluster[0].assert_browse_backup("q1", ["x","y","z", "boo"]) cluster[1].assert_browse_backup("q1", ["x","y","z", "boo"]) sn.sender("ex/k2").send("hoo") # q2 was unbound so this should be dropped. sn.sender("q2").send("end") # mark the end of the queue for assert_browse cluster[0].assert_browse("q2", ["hello", "end"]) cluster[1].assert_browse_backup("q2", ["hello", "end"]) def open_read(name): try: f = open(name) return f.read() finally: f.close() class TransactionTests(HaBrokerTest): load_store=["--load-module", BrokerTest.test_store_lib] def tx_simple_setup(self, broker): """Start a transaction, remove messages from queue a, add messages to queue b""" c = broker.connect() # Send messages to a, no transaction. sa = c.session().sender("a;{create:always,node:{durable:true}}") tx_msgs = ["x","y","z"] for m in tx_msgs: sa.send(Message(content=m, durable=True)) # Receive messages from a, in transaction. tx = c.session(transactional=True) txr = tx.receiver("a") tx_msgs2 = [txr.fetch(1).content for i in xrange(3)] self.assertEqual(tx_msgs, tx_msgs2) # Send messages to b, transactional, mixed with non-transactional. sb = c.session().sender("b;{create:always,node:{durable:true}}") txs = tx.sender("b") msgs = [str(i) for i in xrange(3)] for tx_m,m in zip(tx_msgs2, msgs): txs.send(tx_m); sb.send(m) return tx def tx_subscriptions(self, broker): """Return list of queue names for tx subscriptions""" return [q for q in broker.agent().repsub_queues() if q.startswith("qpid.ha-tx")] def test_tx_simple_commit(self): cluster = HaCluster(self, 2, test_store=True) tx = self.tx_simple_setup(cluster[0]) tx.sync() tx_queues = cluster[0].agent().tx_queues() # NOTE: backup does not process transactional dequeues until prepare cluster[1].assert_browse_backup("a", ["x","y","z"]) cluster[1].assert_browse_backup("b", ['0', '1', '2']) tx.acknowledge() tx.commit() tx.sync() for b in cluster: self.assert_simple_commit_outcome(b, tx_queues) def assert_tx_cleanup(self, b, tx_queues): """Verify that there are no transaction artifacts (exchanges, queues, subscriptions) on b.""" self.assertEqual(0, len(b.agent().tx_queues()), msg=b) self.assertEqual(0, len(self.tx_subscriptions(b)), msg=b) # TX exchanges don't show up in management so test for existence by name. s = b.connect_admin().session() try: for q in tx_queues: try: s.sender("%s;{node:{type:topic}}"%q) self.fail("Found tx exchange %s on %s "%(q,b)) except NotFound: pass finally: s.connection.close() def assert_simple_commit_outcome(self, b, tx_queues): b.assert_browse_backup("a", [], msg=b) b.assert_browse_backup("b", ['0', '1', '2', 'x', 'y', 'z'], msg=b) # Check for expected actions on the store expect = """ """ self.assertEqual(expect, open_read(b.store_log), msg=b) self.assert_tx_cleanup(b, tx_queues) def test_tx_simple_rollback(self): cluster = HaCluster(self, 2, test_store=True) tx = self.tx_simple_setup(cluster[0]) tx.sync() tx_queues = cluster[0].agent().tx_queues() tx.acknowledge() tx.rollback() for b in cluster: self.assert_simple_rollback_outcome(b, tx_queues) def assert_simple_rollback_outcome(self, b, tx_queues): b.assert_browse_backup("a", ["x","y","z"], msg=b) b.assert_browse_backup("b", ['0', '1', '2'], msg=b) # Check for expected actions on the store expect = """ """ self.assertEqual(open_read(b.store_log), expect, msg=b) self.assert_tx_cleanup(b, tx_queues) def test_tx_simple_failover(self): cluster = HaCluster(self, 3, test_store=True) tx = self.tx_simple_setup(cluster[0]) tx.sync() tx_queues = cluster[0].agent().tx_queues() tx.acknowledge() cluster.bounce(0) # Should cause roll-back cluster[0].wait_status("ready") # Restarted. cluster[1].wait_status("active") # Promoted. cluster[2].wait_status("ready") # Failed over. for b in cluster: self.assert_simple_rollback_outcome(b, tx_queues) def test_tx_no_backups(self): """Test the special case of a TX where there are no backups""" # Test commit cluster = HaCluster(self, 1, test_store=True) tx = self.tx_simple_setup(cluster[0]) tx.acknowledge() tx.commit() tx.sync() tx_queues = cluster[0].agent().tx_queues() self.assert_simple_commit_outcome(cluster[0], tx_queues) # Test rollback cluster = HaCluster(self, 1, test_store=True) tx = self.tx_simple_setup(cluster[0]) tx.sync() tx_queues = cluster[0].agent().tx_queues() tx.acknowledge() tx.rollback() tx.sync() self.assert_simple_rollback_outcome(cluster[0], tx_queues) def test_tx_backup_fail(self): cluster = HaCluster( self, 2, test_store=True, s_args=[[],["--test-store-throw=bang"]]) c = cluster[0].connect() tx = c.session(transactional=True) s = tx.sender("q;{create:always,node:{durable:true}}") for m in ["foo","bang","bar"]: s.send(Message(m, durable=True)) self.assertRaises(ServerError, tx.commit) for b in cluster: b.assert_browse_backup("q", []) self.assertEqual(open_read(cluster[0].store_log), "\n\n") self.assertEqual(open_read(cluster[1].store_log), "\n\n\n\n") def test_tx_join_leave(self): """Test cluster members joining/leaving cluster. Also check that tx-queues are cleaned up at end of transaction.""" cluster = HaCluster(self, 3) # Leaving tx = cluster[0].connect().session(transactional=True) s = tx.sender("q;{create:always}") s.send("a", sync=True) self.assertEqual([1,1,1], [len(b.agent().tx_queues()) for b in cluster]) cluster[1].kill(final=False) s.send("b") self.assertRaises(ServerError, tx.commit) self.assertEqual([[],[]], [b.agent().tx_queues() for b in [cluster[0],cluster[2]]]) # Joining tx = cluster[0].connect().session(transactional=True) s = tx.sender("q;{create:always}") s.send("foo") cluster.restart(1) tx.commit() # The new member is not in the tx but receives the results normal replication. for b in cluster: b.assert_browse_backup("q", ["foo"], msg=b) if __name__ == "__main__": outdir = "ha_tests.tmp" shutil.rmtree(outdir, True) qpid_ha = os.getenv("QPID_HA_EXEC") if qpid_ha and os.path.exists(qpid_ha): os.execvp("qpid-python-test", ["qpid-python-test", "-m", "ha_tests", "-DOUTDIR=%s"%outdir] + sys.argv[1:]) else: print "Skipping ha_tests, %s not available"%(qpid_ha)