mirror of https://github.com/python/cpython
476 lines
18 KiB
Python
476 lines
18 KiB
Python
"""TestCases for distributed transactions.
|
|
"""
|
|
|
|
import os
|
|
import time
|
|
import unittest
|
|
import weakref
|
|
|
|
from test_all import db, test_support, have_threads, verbose, \
|
|
get_new_environment_path, get_new_database_path
|
|
|
|
|
|
#----------------------------------------------------------------------
|
|
|
|
class DBReplicationManager(unittest.TestCase):
|
|
import sys
|
|
if sys.version_info[:3] < (2, 4, 0):
|
|
def assertTrue(self, expr, msg=None):
|
|
self.failUnless(expr,msg=msg)
|
|
|
|
def setUp(self) :
|
|
self.homeDirMaster = get_new_environment_path()
|
|
self.homeDirClient = get_new_environment_path()
|
|
|
|
self.dbenvMaster = db.DBEnv()
|
|
self.dbenvClient = db.DBEnv()
|
|
|
|
# Must use "DB_THREAD" because the Replication Manager will
|
|
# be executed in other threads but will use the same environment.
|
|
# http://forums.oracle.com/forums/thread.jspa?threadID=645788&tstart=0
|
|
self.dbenvMaster.open(self.homeDirMaster, db.DB_CREATE | db.DB_INIT_TXN
|
|
| db.DB_INIT_LOG | db.DB_INIT_MPOOL | db.DB_INIT_LOCK |
|
|
db.DB_INIT_REP | db.DB_RECOVER | db.DB_THREAD, 0666)
|
|
self.dbenvClient.open(self.homeDirClient, db.DB_CREATE | db.DB_INIT_TXN
|
|
| db.DB_INIT_LOG | db.DB_INIT_MPOOL | db.DB_INIT_LOCK |
|
|
db.DB_INIT_REP | db.DB_RECOVER | db.DB_THREAD, 0666)
|
|
|
|
wr = weakref.ref(self)
|
|
self.confirmed_master=self.client_startupdone=False
|
|
def confirmed_master(a,b,c) :
|
|
if b==db.DB_EVENT_REP_MASTER :
|
|
self = wr()
|
|
self.confirmed_master=True
|
|
|
|
def client_startupdone(a,b,c) :
|
|
if b==db.DB_EVENT_REP_STARTUPDONE :
|
|
self = wr()
|
|
self.client_startupdone=True
|
|
|
|
self.dbenvMaster.set_event_notify(confirmed_master)
|
|
self.dbenvClient.set_event_notify(client_startupdone)
|
|
|
|
#self.dbenvMaster.set_verbose(db.DB_VERB_REPLICATION, True)
|
|
#self.dbenvMaster.set_verbose(db.DB_VERB_FILEOPS_ALL, True)
|
|
#self.dbenvClient.set_verbose(db.DB_VERB_REPLICATION, True)
|
|
#self.dbenvClient.set_verbose(db.DB_VERB_FILEOPS_ALL, True)
|
|
|
|
self.dbMaster = self.dbClient = None
|
|
|
|
|
|
def tearDown(self):
|
|
if self.dbClient :
|
|
self.dbClient.close()
|
|
if self.dbMaster :
|
|
self.dbMaster.close()
|
|
self.dbenvClient.close()
|
|
self.dbenvMaster.close()
|
|
test_support.rmtree(self.homeDirClient)
|
|
test_support.rmtree(self.homeDirMaster)
|
|
|
|
def test01_basic_replication(self) :
|
|
master_port = test_support.find_unused_port()
|
|
self.dbenvMaster.repmgr_set_local_site("127.0.0.1", master_port)
|
|
client_port = test_support.find_unused_port()
|
|
self.dbenvClient.repmgr_set_local_site("127.0.0.1", client_port)
|
|
self.dbenvMaster.repmgr_add_remote_site("127.0.0.1", client_port)
|
|
self.dbenvClient.repmgr_add_remote_site("127.0.0.1", master_port)
|
|
self.dbenvMaster.rep_set_nsites(2)
|
|
self.dbenvClient.rep_set_nsites(2)
|
|
self.dbenvMaster.rep_set_priority(10)
|
|
self.dbenvClient.rep_set_priority(0)
|
|
|
|
self.dbenvMaster.rep_set_timeout(db.DB_REP_CONNECTION_RETRY,100123)
|
|
self.dbenvClient.rep_set_timeout(db.DB_REP_CONNECTION_RETRY,100321)
|
|
self.assertEquals(self.dbenvMaster.rep_get_timeout(
|
|
db.DB_REP_CONNECTION_RETRY), 100123)
|
|
self.assertEquals(self.dbenvClient.rep_get_timeout(
|
|
db.DB_REP_CONNECTION_RETRY), 100321)
|
|
|
|
self.dbenvMaster.rep_set_timeout(db.DB_REP_ELECTION_TIMEOUT, 100234)
|
|
self.dbenvClient.rep_set_timeout(db.DB_REP_ELECTION_TIMEOUT, 100432)
|
|
self.assertEquals(self.dbenvMaster.rep_get_timeout(
|
|
db.DB_REP_ELECTION_TIMEOUT), 100234)
|
|
self.assertEquals(self.dbenvClient.rep_get_timeout(
|
|
db.DB_REP_ELECTION_TIMEOUT), 100432)
|
|
|
|
self.dbenvMaster.rep_set_timeout(db.DB_REP_ELECTION_RETRY, 100345)
|
|
self.dbenvClient.rep_set_timeout(db.DB_REP_ELECTION_RETRY, 100543)
|
|
self.assertEquals(self.dbenvMaster.rep_get_timeout(
|
|
db.DB_REP_ELECTION_RETRY), 100345)
|
|
self.assertEquals(self.dbenvClient.rep_get_timeout(
|
|
db.DB_REP_ELECTION_RETRY), 100543)
|
|
|
|
self.dbenvMaster.repmgr_set_ack_policy(db.DB_REPMGR_ACKS_ALL)
|
|
self.dbenvClient.repmgr_set_ack_policy(db.DB_REPMGR_ACKS_ALL)
|
|
|
|
self.dbenvMaster.repmgr_start(1, db.DB_REP_MASTER);
|
|
self.dbenvClient.repmgr_start(1, db.DB_REP_CLIENT);
|
|
|
|
self.assertEquals(self.dbenvMaster.rep_get_nsites(),2)
|
|
self.assertEquals(self.dbenvClient.rep_get_nsites(),2)
|
|
self.assertEquals(self.dbenvMaster.rep_get_priority(),10)
|
|
self.assertEquals(self.dbenvClient.rep_get_priority(),0)
|
|
self.assertEquals(self.dbenvMaster.repmgr_get_ack_policy(),
|
|
db.DB_REPMGR_ACKS_ALL)
|
|
self.assertEquals(self.dbenvClient.repmgr_get_ack_policy(),
|
|
db.DB_REPMGR_ACKS_ALL)
|
|
|
|
# The timeout is necessary in BDB 4.5, since DB_EVENT_REP_STARTUPDONE
|
|
# is not generated if the master has no new transactions.
|
|
# This is solved in BDB 4.6 (#15542).
|
|
import time
|
|
timeout = time.time()+60
|
|
while (time.time()<timeout) and not (self.confirmed_master and self.client_startupdone) :
|
|
time.sleep(0.02)
|
|
# self.client_startupdone does not always get set to True within
|
|
# the timeout. On windows this may be a deep issue, on other
|
|
# platforms it is likely just a timing issue, especially on slow
|
|
# virthost buildbots (see issue 3892 for more). Even though
|
|
# the timeout triggers, the rest of this test method usually passes
|
|
# (but not all of it always, see below). So we just note the
|
|
# timeout on stderr and keep soldering on.
|
|
if time.time()>timeout:
|
|
import sys
|
|
print >> sys.stderr, ("XXX: timeout happened before"
|
|
"startup was confirmed - see issue 3892")
|
|
startup_timeout = True
|
|
|
|
d = self.dbenvMaster.repmgr_site_list()
|
|
self.assertEquals(len(d), 1)
|
|
self.assertEquals(d[0][0], "127.0.0.1")
|
|
self.assertEquals(d[0][1], client_port)
|
|
self.assertTrue((d[0][2]==db.DB_REPMGR_CONNECTED) or \
|
|
(d[0][2]==db.DB_REPMGR_DISCONNECTED))
|
|
|
|
d = self.dbenvClient.repmgr_site_list()
|
|
self.assertEquals(len(d), 1)
|
|
self.assertEquals(d[0][0], "127.0.0.1")
|
|
self.assertEquals(d[0][1], master_port)
|
|
self.assertTrue((d[0][2]==db.DB_REPMGR_CONNECTED) or \
|
|
(d[0][2]==db.DB_REPMGR_DISCONNECTED))
|
|
|
|
if db.version() >= (4,6) :
|
|
d = self.dbenvMaster.repmgr_stat(flags=db.DB_STAT_CLEAR);
|
|
self.assertTrue("msgs_queued" in d)
|
|
|
|
self.dbMaster=db.DB(self.dbenvMaster)
|
|
txn=self.dbenvMaster.txn_begin()
|
|
self.dbMaster.open("test", db.DB_HASH, db.DB_CREATE, 0666, txn=txn)
|
|
txn.commit()
|
|
|
|
import time,os.path
|
|
timeout=time.time()+10
|
|
while (time.time()<timeout) and \
|
|
not (os.path.exists(os.path.join(self.homeDirClient,"test"))) :
|
|
time.sleep(0.01)
|
|
|
|
self.dbClient=db.DB(self.dbenvClient)
|
|
while True :
|
|
txn=self.dbenvClient.txn_begin()
|
|
try :
|
|
self.dbClient.open("test", db.DB_HASH, flags=db.DB_RDONLY,
|
|
mode=0666, txn=txn)
|
|
except db.DBRepHandleDeadError :
|
|
txn.abort()
|
|
self.dbClient.close()
|
|
self.dbClient=db.DB(self.dbenvClient)
|
|
continue
|
|
|
|
txn.commit()
|
|
break
|
|
|
|
txn=self.dbenvMaster.txn_begin()
|
|
self.dbMaster.put("ABC", "123", txn=txn)
|
|
txn.commit()
|
|
import time
|
|
timeout=time.time()+10
|
|
v=None
|
|
while (time.time()<timeout) and (v is None) :
|
|
txn=self.dbenvClient.txn_begin()
|
|
v=self.dbClient.get("ABC", txn=txn)
|
|
txn.commit()
|
|
if v is None :
|
|
time.sleep(0.02)
|
|
# If startup did not happen before the timeout above, then this test
|
|
# sometimes fails. This happens randomly, which causes buildbot
|
|
# instability, but all the other bsddb tests pass. Since bsddb3 in the
|
|
# stdlib is currently not getting active maintenance, and is gone in
|
|
# py3k, we just skip the end of the test in that case.
|
|
if time.time()>=timeout and startup_timeout:
|
|
self.skipTest("replication test skipped due to random failure, "
|
|
"see issue 3892")
|
|
self.assertTrue(time.time()<timeout)
|
|
self.assertEquals("123", v)
|
|
|
|
txn=self.dbenvMaster.txn_begin()
|
|
self.dbMaster.delete("ABC", txn=txn)
|
|
txn.commit()
|
|
timeout=time.time()+10
|
|
while (time.time()<timeout) and (v is not None) :
|
|
txn=self.dbenvClient.txn_begin()
|
|
v=self.dbClient.get("ABC", txn=txn)
|
|
txn.commit()
|
|
if v is None :
|
|
time.sleep(0.02)
|
|
self.assertTrue(time.time()<timeout)
|
|
self.assertEquals(None, v)
|
|
|
|
class DBBaseReplication(DBReplicationManager):
|
|
def setUp(self) :
|
|
DBReplicationManager.setUp(self)
|
|
wr = weakref.ref(self)
|
|
def confirmed_master(a,b,c) :
|
|
if (b == db.DB_EVENT_REP_MASTER) or (b == db.DB_EVENT_REP_ELECTED) :
|
|
self = wr()
|
|
self.confirmed_master = True
|
|
|
|
def client_startupdone(a,b,c) :
|
|
if b == db.DB_EVENT_REP_STARTUPDONE :
|
|
self = wr()
|
|
self.client_startupdone = True
|
|
|
|
self.dbenvMaster.set_event_notify(confirmed_master)
|
|
self.dbenvClient.set_event_notify(client_startupdone)
|
|
|
|
import Queue
|
|
self.m2c = Queue.Queue()
|
|
self.c2m = Queue.Queue()
|
|
|
|
# There are only two nodes, so we don't need to
|
|
# do any routing decision
|
|
def m2c(dbenv, control, rec, lsnp, envid, flags) :
|
|
self = wr()
|
|
self.m2c.put((control, rec))
|
|
|
|
def c2m(dbenv, control, rec, lsnp, envid, flags) :
|
|
self = wr()
|
|
self.c2m.put((control, rec))
|
|
|
|
self.dbenvMaster.rep_set_transport(13,m2c)
|
|
self.dbenvMaster.rep_set_priority(10)
|
|
self.dbenvClient.rep_set_transport(3,c2m)
|
|
self.dbenvClient.rep_set_priority(0)
|
|
|
|
self.assertEquals(self.dbenvMaster.rep_get_priority(),10)
|
|
self.assertEquals(self.dbenvClient.rep_get_priority(),0)
|
|
|
|
#self.dbenvMaster.set_verbose(db.DB_VERB_REPLICATION, True)
|
|
#self.dbenvMaster.set_verbose(db.DB_VERB_FILEOPS_ALL, True)
|
|
#self.dbenvClient.set_verbose(db.DB_VERB_REPLICATION, True)
|
|
#self.dbenvClient.set_verbose(db.DB_VERB_FILEOPS_ALL, True)
|
|
|
|
def thread_master() :
|
|
self = wr()
|
|
return self.thread_do(self.dbenvMaster, self.c2m, 3,
|
|
self.master_doing_election, True)
|
|
|
|
def thread_client() :
|
|
self = wr()
|
|
return self.thread_do(self.dbenvClient, self.m2c, 13,
|
|
self.client_doing_election, False)
|
|
|
|
from threading import Thread
|
|
t_m=Thread(target=thread_master)
|
|
t_c=Thread(target=thread_client)
|
|
import sys
|
|
if sys.version_info[0] < 3 :
|
|
t_m.setDaemon(True)
|
|
t_c.setDaemon(True)
|
|
else :
|
|
t_m.daemon = True
|
|
t_c.daemon = True
|
|
|
|
self.t_m = t_m
|
|
self.t_c = t_c
|
|
|
|
self.dbMaster = self.dbClient = None
|
|
|
|
self.master_doing_election=[False]
|
|
self.client_doing_election=[False]
|
|
|
|
|
|
def tearDown(self):
|
|
if self.dbClient :
|
|
self.dbClient.close()
|
|
if self.dbMaster :
|
|
self.dbMaster.close()
|
|
self.m2c.put(None)
|
|
self.c2m.put(None)
|
|
self.t_m.join()
|
|
self.t_c.join()
|
|
self.dbenvClient.close()
|
|
self.dbenvMaster.close()
|
|
test_support.rmtree(self.homeDirClient)
|
|
test_support.rmtree(self.homeDirMaster)
|
|
|
|
def basic_rep_threading(self) :
|
|
self.dbenvMaster.rep_start(flags=db.DB_REP_MASTER)
|
|
self.dbenvClient.rep_start(flags=db.DB_REP_CLIENT)
|
|
|
|
def thread_do(env, q, envid, election_status, must_be_master) :
|
|
while True :
|
|
v=q.get()
|
|
if v is None : return
|
|
env.rep_process_message(v[0], v[1], envid)
|
|
|
|
self.thread_do = thread_do
|
|
|
|
self.t_m.start()
|
|
self.t_c.start()
|
|
|
|
def test01_basic_replication(self) :
|
|
self.basic_rep_threading()
|
|
|
|
# The timeout is necessary in BDB 4.5, since DB_EVENT_REP_STARTUPDONE
|
|
# is not generated if the master has no new transactions.
|
|
# This is solved in BDB 4.6 (#15542).
|
|
import time
|
|
timeout = time.time()+60
|
|
while (time.time()<timeout) and not (self.confirmed_master and
|
|
self.client_startupdone) :
|
|
time.sleep(0.02)
|
|
self.assertTrue(time.time()<timeout)
|
|
|
|
self.dbMaster=db.DB(self.dbenvMaster)
|
|
txn=self.dbenvMaster.txn_begin()
|
|
self.dbMaster.open("test", db.DB_HASH, db.DB_CREATE, 0666, txn=txn)
|
|
txn.commit()
|
|
|
|
import time,os.path
|
|
timeout=time.time()+10
|
|
while (time.time()<timeout) and \
|
|
not (os.path.exists(os.path.join(self.homeDirClient,"test"))) :
|
|
time.sleep(0.01)
|
|
|
|
self.dbClient=db.DB(self.dbenvClient)
|
|
while True :
|
|
txn=self.dbenvClient.txn_begin()
|
|
try :
|
|
self.dbClient.open("test", db.DB_HASH, flags=db.DB_RDONLY,
|
|
mode=0666, txn=txn)
|
|
except db.DBRepHandleDeadError :
|
|
txn.abort()
|
|
self.dbClient.close()
|
|
self.dbClient=db.DB(self.dbenvClient)
|
|
continue
|
|
|
|
txn.commit()
|
|
break
|
|
|
|
txn=self.dbenvMaster.txn_begin()
|
|
self.dbMaster.put("ABC", "123", txn=txn)
|
|
txn.commit()
|
|
import time
|
|
timeout=time.time()+10
|
|
v=None
|
|
while (time.time()<timeout) and (v is None) :
|
|
txn=self.dbenvClient.txn_begin()
|
|
v=self.dbClient.get("ABC", txn=txn)
|
|
txn.commit()
|
|
if v is None :
|
|
time.sleep(0.02)
|
|
self.assertTrue(time.time()<timeout)
|
|
self.assertEquals("123", v)
|
|
|
|
txn=self.dbenvMaster.txn_begin()
|
|
self.dbMaster.delete("ABC", txn=txn)
|
|
txn.commit()
|
|
timeout=time.time()+10
|
|
while (time.time()<timeout) and (v is not None) :
|
|
txn=self.dbenvClient.txn_begin()
|
|
v=self.dbClient.get("ABC", txn=txn)
|
|
txn.commit()
|
|
if v is None :
|
|
time.sleep(0.02)
|
|
self.assertTrue(time.time()<timeout)
|
|
self.assertEquals(None, v)
|
|
|
|
if db.version() >= (4,7) :
|
|
def test02_test_request(self) :
|
|
self.basic_rep_threading()
|
|
(minimum, maximum) = self.dbenvClient.rep_get_request()
|
|
self.dbenvClient.rep_set_request(minimum-1, maximum+1)
|
|
self.assertEqual(self.dbenvClient.rep_get_request(),
|
|
(minimum-1, maximum+1))
|
|
|
|
if db.version() >= (4,6) :
|
|
def test03_master_election(self) :
|
|
# Get ready to hold an election
|
|
#self.dbenvMaster.rep_start(flags=db.DB_REP_MASTER)
|
|
self.dbenvMaster.rep_start(flags=db.DB_REP_CLIENT)
|
|
self.dbenvClient.rep_start(flags=db.DB_REP_CLIENT)
|
|
|
|
def thread_do(env, q, envid, election_status, must_be_master) :
|
|
while True :
|
|
v=q.get()
|
|
if v is None : return
|
|
r = env.rep_process_message(v[0],v[1],envid)
|
|
if must_be_master and self.confirmed_master :
|
|
self.dbenvMaster.rep_start(flags = db.DB_REP_MASTER)
|
|
must_be_master = False
|
|
|
|
if r[0] == db.DB_REP_HOLDELECTION :
|
|
def elect() :
|
|
while True :
|
|
try :
|
|
env.rep_elect(2, 1)
|
|
election_status[0] = False
|
|
break
|
|
except db.DBRepUnavailError :
|
|
pass
|
|
|
|
if not election_status[0] and not self.confirmed_master :
|
|
from threading import Thread
|
|
election_status[0] = True
|
|
t=Thread(target=elect)
|
|
import sys
|
|
if sys.version_info[0] < 3 :
|
|
t.setDaemon(True)
|
|
else :
|
|
t.daemon = True
|
|
t.start()
|
|
|
|
self.thread_do = thread_do
|
|
|
|
self.t_m.start()
|
|
self.t_c.start()
|
|
|
|
self.dbenvMaster.rep_set_timeout(db.DB_REP_ELECTION_TIMEOUT, 50000)
|
|
self.dbenvClient.rep_set_timeout(db.DB_REP_ELECTION_TIMEOUT, 50000)
|
|
self.client_doing_election[0] = True
|
|
while True :
|
|
try :
|
|
self.dbenvClient.rep_elect(2, 1)
|
|
self.client_doing_election[0] = False
|
|
break
|
|
except db.DBRepUnavailError :
|
|
pass
|
|
|
|
self.assertTrue(self.confirmed_master)
|
|
|
|
#----------------------------------------------------------------------
|
|
|
|
def test_suite():
|
|
suite = unittest.TestSuite()
|
|
if db.version() >= (4, 6) :
|
|
dbenv = db.DBEnv()
|
|
try :
|
|
dbenv.repmgr_get_ack_policy()
|
|
ReplicationManager_available=True
|
|
except :
|
|
ReplicationManager_available=False
|
|
dbenv.close()
|
|
del dbenv
|
|
if ReplicationManager_available :
|
|
suite.addTest(unittest.makeSuite(DBReplicationManager))
|
|
|
|
if have_threads :
|
|
suite.addTest(unittest.makeSuite(DBBaseReplication))
|
|
|
|
return suite
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main(defaultTest='test_suite')
|