/usr/lib/python3/dist-packages/bsddb3/tests/test_replication.py is in python3-bsddb3 6.1.0-1+b2.
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Copyright (c) 2008-2014, Jesus Cea Avion <jcea@jcea.es>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
3. Neither the name of Jesus Cea Avion nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
"""
"""TestCases for distributed transactions.
"""
import os
import time
import unittest
from .test_all import db, test_support, have_threads, verbose, \
get_new_environment_path, get_new_database_path
#----------------------------------------------------------------------
class DBReplication(unittest.TestCase) :
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, 0o666)
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, 0o666)
self.confirmed_master=self.client_startupdone=False
def confirmed_master(a,b,c) :
if b==db.DB_EVENT_REP_MASTER :
self.confirmed_master=True
def client_startupdone(a,b,c) :
if b==db.DB_EVENT_REP_STARTUPDONE :
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()
# Here we assign dummy event handlers to allow GC of the test object.
# Since the dummy handler doesn't use any outer scope variable, it
# doesn't keep any reference to the test object.
def dummy(*args) :
pass
self.dbenvMaster.set_event_notify(dummy)
self.dbenvClient.set_event_notify(dummy)
self.dbenvClient.close()
self.dbenvMaster.close()
test_support.rmtree(self.homeDirClient)
test_support.rmtree(self.homeDirMaster)
class DBReplicationManager(DBReplication) :
def test01_basic_replication(self) :
master_port = test_support.find_unused_port()
client_port = test_support.find_unused_port()
if db.version() >= (5, 2) :
self.site = self.dbenvMaster.repmgr_site("127.0.0.1", master_port)
self.site.set_config(db.DB_GROUP_CREATOR, True)
self.site.set_config(db.DB_LOCAL_SITE, True)
self.site2 = self.dbenvMaster.repmgr_site("127.0.0.1", client_port)
self.site3 = self.dbenvClient.repmgr_site("127.0.0.1", master_port)
self.site3.set_config(db.DB_BOOTSTRAP_HELPER, True)
self.site4 = self.dbenvClient.repmgr_site("127.0.0.1", client_port)
self.site4.set_config(db.DB_LOCAL_SITE, True)
d = {
db.DB_BOOTSTRAP_HELPER: [False, False, True, False],
db.DB_GROUP_CREATOR: [True, False, False, False],
db.DB_LEGACY: [False, False, False, False],
db.DB_LOCAL_SITE: [True, False, False, True],
db.DB_REPMGR_PEER: [False, False, False, False ],
}
for i, j in list(d.items()) :
for k, v in \
zip([self.site, self.site2, self.site3, self.site4], j) :
if v :
self.assertTrue(k.get_config(i))
else :
self.assertFalse(k.get_config(i))
self.assertNotEqual(self.site.get_eid(), self.site2.get_eid())
self.assertNotEqual(self.site3.get_eid(), self.site4.get_eid())
for i, j in zip([self.site, self.site2, self.site3, self.site4], \
[master_port, client_port, master_port, client_port]) :
addr = i.get_address()
self.assertEqual(addr, ("127.0.0.1", j))
for i in [self.site, self.site2] :
self.assertEqual(i.get_address(),
self.dbenvMaster.repmgr_site_by_eid(i.get_eid()).get_address())
for i in [self.site3, self.site4] :
self.assertEqual(i.get_address(),
self.dbenvClient.repmgr_site_by_eid(i.get_eid()).get_address())
else :
self.dbenvMaster.repmgr_set_local_site("127.0.0.1", master_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.assertEqual(self.dbenvMaster.rep_get_timeout(
db.DB_REP_CONNECTION_RETRY), 100123)
self.assertEqual(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.assertEqual(self.dbenvMaster.rep_get_timeout(
db.DB_REP_ELECTION_TIMEOUT), 100234)
self.assertEqual(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.assertEqual(self.dbenvMaster.rep_get_timeout(
db.DB_REP_ELECTION_RETRY), 100345)
self.assertEqual(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.assertEqual(self.dbenvMaster.rep_get_nsites(),2)
self.assertEqual(self.dbenvClient.rep_get_nsites(),2)
self.assertEqual(self.dbenvMaster.rep_get_priority(),10)
self.assertEqual(self.dbenvClient.rep_get_priority(),0)
self.assertEqual(self.dbenvMaster.repmgr_get_ack_policy(),
db.DB_REPMGR_ACKS_ALL)
self.assertEqual(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()+10
while (time.time()<timeout) and not (self.confirmed_master and self.client_startupdone) :
time.sleep(0.02)
self.assertTrue(time.time()<timeout)
d = self.dbenvMaster.repmgr_site_list()
self.assertEqual(len(d), 1)
d = list(d.values())[0] # There is only one
self.assertEqual(d[0], "127.0.0.1")
self.assertEqual(d[1], client_port)
self.assertTrue((d[2]==db.DB_REPMGR_CONNECTED) or \
(d[2]==db.DB_REPMGR_DISCONNECTED))
d = self.dbenvClient.repmgr_site_list()
self.assertEqual(len(d), 1)
d = list(d.values())[0] # There is only one
self.assertEqual(d[0], "127.0.0.1")
self.assertEqual(d[1], master_port)
self.assertTrue((d[2]==db.DB_REPMGR_CONNECTED) or \
(d[2]==db.DB_REPMGR_DISCONNECTED))
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, 0o666, 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=0o666, 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.assertEqual("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.assertEqual(None, v)
class DBBaseReplication(DBReplication) :
def setUp(self) :
DBReplication.setUp(self)
def confirmed_master(a,b,c) :
if (b == db.DB_EVENT_REP_MASTER) or (b == db.DB_EVENT_REP_ELECTED) :
self.confirmed_master = True
def client_startupdone(a,b,c) :
if b == db.DB_EVENT_REP_STARTUPDONE :
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.m2c.put((control, rec))
def c2m(dbenv, control, rec, lsnp, envid, flags) :
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.assertEqual(self.dbenvMaster.rep_get_priority(),10)
self.assertEqual(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() :
return self.thread_do(self.dbenvMaster, self.c2m, 3,
self.master_doing_election, True)
def thread_client() :
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()
# Here we assign dummy event handlers to allow GC of the test object.
# Since the dummy handler doesn't use any outer scope variable, it
# doesn't keep any reference to the test object.
def dummy(*args) :
pass
self.dbenvMaster.set_event_notify(dummy)
self.dbenvClient.set_event_notify(dummy)
self.dbenvMaster.rep_set_transport(13,dummy)
self.dbenvClient.rep_set_transport(3,dummy)
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()+10
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, 0o666, 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=0o666, txn=txn)
except db.DBRepHandleDeadError :
txn.abort()
self.dbClient.close()
self.dbClient=db.DB(self.dbenvClient)
continue
txn.commit()
break
d = self.dbenvMaster.rep_stat(flags=db.DB_STAT_CLEAR);
self.assertTrue("master_changes" in d)
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.assertEqual("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.assertEqual(None, v)
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))
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)
# Race condition showed up after upgrading to Solaris 10 Update 10
# https://forums.oracle.com/forums/thread.jspa?messageID=9902860
# jcea@jcea.es: See private email from Paula Bingham (Oracle),
# in 20110929.
while not (self.dbenvClient.rep_stat()["startup_complete"]) :
pass
def test04_test_clockskew(self) :
fast, slow = 1234, 1230
self.dbenvMaster.rep_set_clockskew(fast, slow)
self.assertEqual((fast, slow),
self.dbenvMaster.rep_get_clockskew())
self.basic_rep_threading()
#----------------------------------------------------------------------
def test_suite():
suite = unittest.TestSuite()
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')
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