From 296443137f4288cb030e92859ccfbe3204bc1088 Mon Sep 17 00:00:00 2001
From: rahulp13
Date: Tue, 17 Mar 2020 14:55:41 +0530
Subject: initial commit

---
 lib/python2.7/bsddb/test/test_replication.py | 543 +++++++++++++++++++++++++++
 1 file changed, 543 insertions(+)
 create mode 100644 lib/python2.7/bsddb/test/test_replication.py

(limited to 'lib/python2.7/bsddb/test/test_replication.py')

diff --git a/lib/python2.7/bsddb/test/test_replication.py b/lib/python2.7/bsddb/test/test_replication.py
new file mode 100644
index 0000000..12ab2dd
--- /dev/null
+++ b/lib/python2.7/bsddb/test/test_replication.py
@@ -0,0 +1,543 @@
+"""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, 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)
+
+        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 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()+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.assertEqual(len(d), 1)
+        d = 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 = 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))
+
+        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.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()+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
+
+        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)
+
+    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')
-- 
cgit