544 lines
21 KiB
Python
544 lines
21 KiB
Python
"""TestCases for distributed transactions.
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"""
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import os
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import time
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import unittest
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from test_all import db, test_support, have_threads, verbose, \
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get_new_environment_path, get_new_database_path
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#----------------------------------------------------------------------
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class DBReplication(unittest.TestCase) :
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def setUp(self) :
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self.homeDirMaster = get_new_environment_path()
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self.homeDirClient = get_new_environment_path()
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self.dbenvMaster = db.DBEnv()
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self.dbenvClient = db.DBEnv()
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# Must use "DB_THREAD" because the Replication Manager will
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# be executed in other threads but will use the same environment.
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# http://forums.oracle.com/forums/thread.jspa?threadID=645788&tstart=0
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self.dbenvMaster.open(self.homeDirMaster, db.DB_CREATE | db.DB_INIT_TXN
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| db.DB_INIT_LOG | db.DB_INIT_MPOOL | db.DB_INIT_LOCK |
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db.DB_INIT_REP | db.DB_RECOVER | db.DB_THREAD, 0666)
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self.dbenvClient.open(self.homeDirClient, db.DB_CREATE | db.DB_INIT_TXN
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| db.DB_INIT_LOG | db.DB_INIT_MPOOL | db.DB_INIT_LOCK |
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db.DB_INIT_REP | db.DB_RECOVER | db.DB_THREAD, 0666)
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self.confirmed_master=self.client_startupdone=False
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def confirmed_master(a,b,c) :
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if b==db.DB_EVENT_REP_MASTER :
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self.confirmed_master=True
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def client_startupdone(a,b,c) :
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if b==db.DB_EVENT_REP_STARTUPDONE :
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self.client_startupdone=True
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self.dbenvMaster.set_event_notify(confirmed_master)
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self.dbenvClient.set_event_notify(client_startupdone)
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#self.dbenvMaster.set_verbose(db.DB_VERB_REPLICATION, True)
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#self.dbenvMaster.set_verbose(db.DB_VERB_FILEOPS_ALL, True)
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#self.dbenvClient.set_verbose(db.DB_VERB_REPLICATION, True)
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#self.dbenvClient.set_verbose(db.DB_VERB_FILEOPS_ALL, True)
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self.dbMaster = self.dbClient = None
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def tearDown(self):
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if self.dbClient :
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self.dbClient.close()
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if self.dbMaster :
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self.dbMaster.close()
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# Here we assign dummy event handlers to allow GC of the test object.
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# Since the dummy handler doesn't use any outer scope variable, it
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# doesn't keep any reference to the test object.
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def dummy(*args) :
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pass
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self.dbenvMaster.set_event_notify(dummy)
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self.dbenvClient.set_event_notify(dummy)
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self.dbenvClient.close()
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self.dbenvMaster.close()
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test_support.rmtree(self.homeDirClient)
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test_support.rmtree(self.homeDirMaster)
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class DBReplicationManager(DBReplication) :
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def test01_basic_replication(self) :
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master_port = test_support.find_unused_port()
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client_port = test_support.find_unused_port()
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if db.version() >= (5, 2) :
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self.site = self.dbenvMaster.repmgr_site("127.0.0.1", master_port)
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self.site.set_config(db.DB_GROUP_CREATOR, True)
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self.site.set_config(db.DB_LOCAL_SITE, True)
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self.site2 = self.dbenvMaster.repmgr_site("127.0.0.1", client_port)
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self.site3 = self.dbenvClient.repmgr_site("127.0.0.1", master_port)
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self.site3.set_config(db.DB_BOOTSTRAP_HELPER, True)
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self.site4 = self.dbenvClient.repmgr_site("127.0.0.1", client_port)
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self.site4.set_config(db.DB_LOCAL_SITE, True)
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d = {
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db.DB_BOOTSTRAP_HELPER: [False, False, True, False],
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db.DB_GROUP_CREATOR: [True, False, False, False],
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db.DB_LEGACY: [False, False, False, False],
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db.DB_LOCAL_SITE: [True, False, False, True],
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db.DB_REPMGR_PEER: [False, False, False, False ],
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}
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for i, j in d.items() :
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for k, v in \
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zip([self.site, self.site2, self.site3, self.site4], j) :
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if v :
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self.assertTrue(k.get_config(i))
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else :
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self.assertFalse(k.get_config(i))
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self.assertNotEqual(self.site.get_eid(), self.site2.get_eid())
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self.assertNotEqual(self.site3.get_eid(), self.site4.get_eid())
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for i, j in zip([self.site, self.site2, self.site3, self.site4], \
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[master_port, client_port, master_port, client_port]) :
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addr = i.get_address()
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self.assertEqual(addr, ("127.0.0.1", j))
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for i in [self.site, self.site2] :
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self.assertEqual(i.get_address(),
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self.dbenvMaster.repmgr_site_by_eid(i.get_eid()).get_address())
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for i in [self.site3, self.site4] :
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self.assertEqual(i.get_address(),
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self.dbenvClient.repmgr_site_by_eid(i.get_eid()).get_address())
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else :
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self.dbenvMaster.repmgr_set_local_site("127.0.0.1", master_port)
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self.dbenvClient.repmgr_set_local_site("127.0.0.1", client_port)
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self.dbenvMaster.repmgr_add_remote_site("127.0.0.1", client_port)
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self.dbenvClient.repmgr_add_remote_site("127.0.0.1", master_port)
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self.dbenvMaster.rep_set_nsites(2)
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self.dbenvClient.rep_set_nsites(2)
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self.dbenvMaster.rep_set_priority(10)
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self.dbenvClient.rep_set_priority(0)
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self.dbenvMaster.rep_set_timeout(db.DB_REP_CONNECTION_RETRY,100123)
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self.dbenvClient.rep_set_timeout(db.DB_REP_CONNECTION_RETRY,100321)
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self.assertEqual(self.dbenvMaster.rep_get_timeout(
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db.DB_REP_CONNECTION_RETRY), 100123)
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self.assertEqual(self.dbenvClient.rep_get_timeout(
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db.DB_REP_CONNECTION_RETRY), 100321)
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self.dbenvMaster.rep_set_timeout(db.DB_REP_ELECTION_TIMEOUT, 100234)
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self.dbenvClient.rep_set_timeout(db.DB_REP_ELECTION_TIMEOUT, 100432)
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self.assertEqual(self.dbenvMaster.rep_get_timeout(
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db.DB_REP_ELECTION_TIMEOUT), 100234)
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self.assertEqual(self.dbenvClient.rep_get_timeout(
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db.DB_REP_ELECTION_TIMEOUT), 100432)
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self.dbenvMaster.rep_set_timeout(db.DB_REP_ELECTION_RETRY, 100345)
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self.dbenvClient.rep_set_timeout(db.DB_REP_ELECTION_RETRY, 100543)
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self.assertEqual(self.dbenvMaster.rep_get_timeout(
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db.DB_REP_ELECTION_RETRY), 100345)
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self.assertEqual(self.dbenvClient.rep_get_timeout(
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db.DB_REP_ELECTION_RETRY), 100543)
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self.dbenvMaster.repmgr_set_ack_policy(db.DB_REPMGR_ACKS_ALL)
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self.dbenvClient.repmgr_set_ack_policy(db.DB_REPMGR_ACKS_ALL)
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self.dbenvMaster.repmgr_start(1, db.DB_REP_MASTER);
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self.dbenvClient.repmgr_start(1, db.DB_REP_CLIENT);
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self.assertEqual(self.dbenvMaster.rep_get_nsites(),2)
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self.assertEqual(self.dbenvClient.rep_get_nsites(),2)
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self.assertEqual(self.dbenvMaster.rep_get_priority(),10)
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self.assertEqual(self.dbenvClient.rep_get_priority(),0)
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self.assertEqual(self.dbenvMaster.repmgr_get_ack_policy(),
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db.DB_REPMGR_ACKS_ALL)
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self.assertEqual(self.dbenvClient.repmgr_get_ack_policy(),
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db.DB_REPMGR_ACKS_ALL)
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# The timeout is necessary in BDB 4.5, since DB_EVENT_REP_STARTUPDONE
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# is not generated if the master has no new transactions.
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# This is solved in BDB 4.6 (#15542).
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import time
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timeout = time.time()+60
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while (time.time()<timeout) and not (self.confirmed_master and self.client_startupdone) :
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time.sleep(0.02)
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# self.client_startupdone does not always get set to True within
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# the timeout. On windows this may be a deep issue, on other
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# platforms it is likely just a timing issue, especially on slow
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# virthost buildbots (see issue 3892 for more). Even though
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# the timeout triggers, the rest of this test method usually passes
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# (but not all of it always, see below). So we just note the
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# timeout on stderr and keep soldering on.
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if time.time()>timeout:
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import sys
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print >> sys.stderr, ("XXX: timeout happened before"
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"startup was confirmed - see issue 3892")
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startup_timeout = True
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d = self.dbenvMaster.repmgr_site_list()
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self.assertEqual(len(d), 1)
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d = d.values()[0] # There is only one
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self.assertEqual(d[0], "127.0.0.1")
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self.assertEqual(d[1], client_port)
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self.assertTrue((d[2]==db.DB_REPMGR_CONNECTED) or \
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(d[2]==db.DB_REPMGR_DISCONNECTED))
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d = self.dbenvClient.repmgr_site_list()
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self.assertEqual(len(d), 1)
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d = d.values()[0] # There is only one
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self.assertEqual(d[0], "127.0.0.1")
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self.assertEqual(d[1], master_port)
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self.assertTrue((d[2]==db.DB_REPMGR_CONNECTED) or \
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(d[2]==db.DB_REPMGR_DISCONNECTED))
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if db.version() >= (4,6) :
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d = self.dbenvMaster.repmgr_stat(flags=db.DB_STAT_CLEAR);
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self.assertTrue("msgs_queued" in d)
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self.dbMaster=db.DB(self.dbenvMaster)
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txn=self.dbenvMaster.txn_begin()
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self.dbMaster.open("test", db.DB_HASH, db.DB_CREATE, 0666, txn=txn)
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txn.commit()
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import time,os.path
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timeout=time.time()+10
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while (time.time()<timeout) and \
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not (os.path.exists(os.path.join(self.homeDirClient,"test"))) :
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time.sleep(0.01)
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self.dbClient=db.DB(self.dbenvClient)
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while True :
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txn=self.dbenvClient.txn_begin()
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try :
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self.dbClient.open("test", db.DB_HASH, flags=db.DB_RDONLY,
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mode=0666, txn=txn)
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except db.DBRepHandleDeadError :
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txn.abort()
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self.dbClient.close()
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self.dbClient=db.DB(self.dbenvClient)
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continue
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txn.commit()
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break
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txn=self.dbenvMaster.txn_begin()
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self.dbMaster.put("ABC", "123", txn=txn)
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txn.commit()
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import time
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timeout=time.time()+10
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v=None
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while (time.time()<timeout) and (v is None) :
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txn=self.dbenvClient.txn_begin()
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v=self.dbClient.get("ABC", txn=txn)
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txn.commit()
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if v is None :
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time.sleep(0.02)
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# If startup did not happen before the timeout above, then this test
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# sometimes fails. This happens randomly, which causes buildbot
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# instability, but all the other bsddb tests pass. Since bsddb3 in the
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# stdlib is currently not getting active maintenance, and is gone in
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# py3k, we just skip the end of the test in that case.
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if time.time()>=timeout and startup_timeout:
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self.skipTest("replication test skipped due to random failure, "
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"see issue 3892")
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self.assertTrue(time.time()<timeout)
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self.assertEqual("123", v)
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txn=self.dbenvMaster.txn_begin()
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self.dbMaster.delete("ABC", txn=txn)
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txn.commit()
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timeout=time.time()+10
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while (time.time()<timeout) and (v is not None) :
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txn=self.dbenvClient.txn_begin()
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v=self.dbClient.get("ABC", txn=txn)
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txn.commit()
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if v is None :
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time.sleep(0.02)
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self.assertTrue(time.time()<timeout)
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self.assertEqual(None, v)
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class DBBaseReplication(DBReplication) :
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def setUp(self) :
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DBReplication.setUp(self)
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def confirmed_master(a,b,c) :
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if (b == db.DB_EVENT_REP_MASTER) or (b == db.DB_EVENT_REP_ELECTED) :
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self.confirmed_master = True
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def client_startupdone(a,b,c) :
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if b == db.DB_EVENT_REP_STARTUPDONE :
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self.client_startupdone = True
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self.dbenvMaster.set_event_notify(confirmed_master)
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self.dbenvClient.set_event_notify(client_startupdone)
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import Queue
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self.m2c = Queue.Queue()
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self.c2m = Queue.Queue()
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# There are only two nodes, so we don't need to
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# do any routing decision
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def m2c(dbenv, control, rec, lsnp, envid, flags) :
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self.m2c.put((control, rec))
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def c2m(dbenv, control, rec, lsnp, envid, flags) :
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self.c2m.put((control, rec))
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self.dbenvMaster.rep_set_transport(13,m2c)
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self.dbenvMaster.rep_set_priority(10)
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self.dbenvClient.rep_set_transport(3,c2m)
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self.dbenvClient.rep_set_priority(0)
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self.assertEqual(self.dbenvMaster.rep_get_priority(),10)
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self.assertEqual(self.dbenvClient.rep_get_priority(),0)
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#self.dbenvMaster.set_verbose(db.DB_VERB_REPLICATION, True)
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#self.dbenvMaster.set_verbose(db.DB_VERB_FILEOPS_ALL, True)
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#self.dbenvClient.set_verbose(db.DB_VERB_REPLICATION, True)
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#self.dbenvClient.set_verbose(db.DB_VERB_FILEOPS_ALL, True)
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def thread_master() :
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return self.thread_do(self.dbenvMaster, self.c2m, 3,
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self.master_doing_election, True)
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def thread_client() :
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return self.thread_do(self.dbenvClient, self.m2c, 13,
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self.client_doing_election, False)
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from threading import Thread
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t_m=Thread(target=thread_master)
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t_c=Thread(target=thread_client)
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import sys
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if sys.version_info[0] < 3 :
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t_m.setDaemon(True)
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t_c.setDaemon(True)
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else :
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t_m.daemon = True
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t_c.daemon = True
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self.t_m = t_m
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self.t_c = t_c
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self.dbMaster = self.dbClient = None
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self.master_doing_election=[False]
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self.client_doing_election=[False]
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def tearDown(self):
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if self.dbClient :
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self.dbClient.close()
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if self.dbMaster :
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self.dbMaster.close()
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self.m2c.put(None)
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self.c2m.put(None)
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self.t_m.join()
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self.t_c.join()
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# Here we assign dummy event handlers to allow GC of the test object.
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# Since the dummy handler doesn't use any outer scope variable, it
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# doesn't keep any reference to the test object.
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def dummy(*args) :
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pass
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self.dbenvMaster.set_event_notify(dummy)
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self.dbenvClient.set_event_notify(dummy)
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self.dbenvMaster.rep_set_transport(13,dummy)
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self.dbenvClient.rep_set_transport(3,dummy)
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self.dbenvClient.close()
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self.dbenvMaster.close()
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test_support.rmtree(self.homeDirClient)
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test_support.rmtree(self.homeDirMaster)
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def basic_rep_threading(self) :
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self.dbenvMaster.rep_start(flags=db.DB_REP_MASTER)
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self.dbenvClient.rep_start(flags=db.DB_REP_CLIENT)
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def thread_do(env, q, envid, election_status, must_be_master) :
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while True :
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v=q.get()
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if v is None : return
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env.rep_process_message(v[0], v[1], envid)
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self.thread_do = thread_do
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self.t_m.start()
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self.t_c.start()
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def test01_basic_replication(self) :
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self.basic_rep_threading()
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# The timeout is necessary in BDB 4.5, since DB_EVENT_REP_STARTUPDONE
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# is not generated if the master has no new transactions.
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# This is solved in BDB 4.6 (#15542).
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import time
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timeout = time.time()+60
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while (time.time()<timeout) and not (self.confirmed_master and
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self.client_startupdone) :
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time.sleep(0.02)
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self.assertTrue(time.time()<timeout)
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self.dbMaster=db.DB(self.dbenvMaster)
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txn=self.dbenvMaster.txn_begin()
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self.dbMaster.open("test", db.DB_HASH, db.DB_CREATE, 0666, txn=txn)
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txn.commit()
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import time,os.path
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timeout=time.time()+10
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while (time.time()<timeout) and \
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not (os.path.exists(os.path.join(self.homeDirClient,"test"))) :
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time.sleep(0.01)
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self.dbClient=db.DB(self.dbenvClient)
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while True :
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txn=self.dbenvClient.txn_begin()
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try :
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self.dbClient.open("test", db.DB_HASH, flags=db.DB_RDONLY,
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mode=0666, txn=txn)
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except db.DBRepHandleDeadError :
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txn.abort()
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self.dbClient.close()
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self.dbClient=db.DB(self.dbenvClient)
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continue
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txn.commit()
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break
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d = self.dbenvMaster.rep_stat(flags=db.DB_STAT_CLEAR);
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self.assertTrue("master_changes" in d)
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txn=self.dbenvMaster.txn_begin()
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self.dbMaster.put("ABC", "123", txn=txn)
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txn.commit()
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import time
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timeout=time.time()+10
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v=None
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while (time.time()<timeout) and (v is None) :
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txn=self.dbenvClient.txn_begin()
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v=self.dbClient.get("ABC", txn=txn)
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txn.commit()
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if v is None :
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time.sleep(0.02)
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self.assertTrue(time.time()<timeout)
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self.assertEqual("123", v)
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txn=self.dbenvMaster.txn_begin()
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self.dbMaster.delete("ABC", txn=txn)
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txn.commit()
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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)
|
|
|
|
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)
|
|
|
|
# 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
|
|
|
|
if db.version() >= (4,7) :
|
|
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()
|
|
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')
|