コード例 #1
0
    def test_skipped_oplog_entry_updates_checkpoint(self):
        repl_set = ReplicaSetSingle().start()
        conn = repl_set.client()
        opman = OplogThread(
            primary_client=conn,
            doc_managers=(DocManager(),),
            oplog_progress_dict=LockingDict(),
            namespace_config=NamespaceConfig(namespace_set=["test.test"]),
        )
        opman.start()

        # Insert a document into an included collection
        conn["test"]["test"].insert_one({"test": 1})
        last_ts = opman.get_last_oplog_timestamp()
        assert_soon(
            lambda: last_ts == opman.checkpoint,
            "OplogThread never updated checkpoint to non-skipped " "entry.",
        )
        self.assertEqual(len(opman.doc_managers[0]._search()), 1)

        # Make sure that the oplog thread updates its checkpoint on every
        # oplog entry.
        conn["test"]["ignored"].insert_one({"test": 1})
        last_ts = opman.get_last_oplog_timestamp()
        assert_soon(
            lambda: last_ts == opman.checkpoint,
            "OplogThread never updated checkpoint to skipped entry.",
        )
        opman.join()
        conn.close()
        repl_set.stop()
コード例 #2
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 def setUp(self):
     self.repl_set = ReplicaSetSingle().start()
     self.primary_conn = self.repl_set.client()
     self.oplog_coll = self.primary_conn.local['oplog.rs']
     self.dest_mapping_stru = DestMapping([], [], {})
     self.opman = OplogThread(
         primary_client=self.primary_conn,
         doc_managers=(DocManager(),),
         oplog_progress_dict=LockingDict(),
         dest_mapping_stru=self.dest_mapping_stru,
     )
コード例 #3
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    def test_dump_collection(self):
        """Test the dump_collection method

        Cases:

        1. empty oplog
        2. non-empty oplog, with gridfs collections
        3. non-empty oplog, specified a namespace-set, none of the oplog
           entries are for collections in the namespace-set
        """

        # Test with empty oplog
        self.opman.oplog = self.primary_conn["test"]["emptycollection"]
        last_ts = self.opman.dump_collection()
        self.assertEqual(last_ts, None)

        # Test with non-empty oplog with gridfs collections
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        # Insert 10 gridfs files
        for i in range(10):
            fs = gridfs.GridFS(self.primary_conn["gridfs"],
                               collection="test" + str(i))
            fs.put(b"hello world")
        # Insert 1000 documents
        for i in range(1000):
            self.primary_conn["test"]["test"].insert_one({
                "i": i + 500
            })
        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        self.assertEqual(len(self.opman.doc_managers[0]._search()), 1010)

        # Case 3
        # 1MB oplog so that we can rollover quickly
        repl_set = ReplicaSetSingle(oplogSize=1).start()
        conn = repl_set.client()
        opman = OplogThread(
            primary_client=conn,
            doc_managers=(DocManager(),),
            oplog_progress_dict=LockingDict(),
            namespace_config=NamespaceConfig(namespace_set=["test.test"]),
        )
        # Insert a document into an included collection
        conn["test"]["test"].insert_one({"test": 1})
        # Cause the oplog to rollover on a non-included collection
        while conn["local"]["oplog.rs"].find_one({"ns": "test.test"}):
            conn["test"]["ignored"].insert_many(
                [{"test": "1" * 1024} for _ in range(1024)])
        last_ts = opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, opman.dump_collection())
        self.assertEqual(len(opman.doc_managers[0]._search()), 1)
        conn.close()
        repl_set.stop()
コード例 #4
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    def test_dump_collection(self):
        """Test the dump_collection method

        Cases:

        1. empty oplog
        2. non-empty oplog, with gridfs collections
        3. non-empty oplog, specified a namespace-set, none of the oplog
           entries are for collections in the namespace-set
        """

        # Test with empty oplog
        self.opman.oplog = self.primary_conn["test"]["emptycollection"]
        last_ts = self.opman.dump_collection()
        self.assertEqual(last_ts, None)

        # Test with non-empty oplog with gridfs collections
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        # Insert 10 gridfs files
        for i in range(10):
            fs = gridfs.GridFS(self.primary_conn["gridfs"],
                               collection="test" + str(i))
            fs.put(b"hello world")
        # Insert 1000 documents
        for i in range(1000):
            self.primary_conn["test"]["test"].insert_one({
                "i": i + 500
            })
        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        self.assertEqual(len(self.opman.doc_managers[0]._search()), 1010)

        # Case 3
        # 1MB oplog so that we can rollover quickly
        repl_set = ReplicaSetSingle(oplogSize=1).start()
        conn = repl_set.client()
        opman = OplogThread(
            primary_client=conn,
            doc_managers=(DocManager(),),
            oplog_progress_dict=LockingDict(),
            namespace_config=NamespaceConfig(namespace_set=["test.test"]),
        )
        # Insert a document into an included collection
        conn["test"]["test"].insert_one({"test": 1})
        # Cause the oplog to rollover on a non-included collection
        while conn["local"]["oplog.rs"].find_one({"ns": "test.test"}):
            conn["test"]["ignored"].insert_many(
                [{"test": "1" * 1024} for _ in range(1024)])
        last_ts = opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, opman.dump_collection())
        self.assertEqual(len(opman.doc_managers[0]._search()), 1)
        conn.close()
        repl_set.stop()
コード例 #5
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 def setUp(self):
     self.repl_set = ReplicaSetSingle().start()
     self.primary_conn = self.repl_set.client()
     self.oplog_coll = self.primary_conn.local["oplog.rs"]
     self.opman = OplogThread(
         primary_client=self.primary_conn,
         doc_managers=(DocManager(),),
         oplog_progress_dict=LockingDict(),
         namespace_config=NamespaceConfig(
             namespace_options={"test.*": True, "gridfs.*": {"gridfs": True}}
         ),
     )
コード例 #6
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    def test_dump_collection(self):
        """Test the dump_collection method

        Cases:

        1. empty oplog
        2. non-empty oplog
        3. non-empty oplog, specified a namespace-set, none of the oplog
           entries are for collections in the namespace-set
        """

        # Test with empty oplog
        self.opman.oplog = self.primary_conn["test"]["emptycollection"]
        last_ts = self.opman.dump_collection()
        self.assertEqual(last_ts, None)

        # Test with non-empty oplog
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        for i in range(1000):
            self.primary_conn["test"]["test"].insert_one({
                "i": i + 500
            })
        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        self.assertEqual(len(self.opman.doc_managers[0]._search()), 1000)

        # Case 3
        # 1MB oplog so that we can rollover quickly
        repl_set = ReplicaSetSingle(oplogSize=1).start()
        conn = repl_set.client()
        dest_mapping_stru = DestMapping(["test.test"], [], {})
        opman = OplogThread(
            primary_client=conn,
            doc_managers=(DocManager(),),
            oplog_progress_dict=LockingDict(),
            dest_mapping_stru=dest_mapping_stru,
            ns_set=set(["test.test"])
        )
        # Insert a document into a ns_set collection
        conn["test"]["test"].insert_one({"test": 1})
        # Cause the oplog to rollover on a non-ns_set collection
        while conn["local"]["oplog.rs"].find_one({"ns": "test.test"}):
            conn["test"]["ignored"].insert_many(
                [{"test": "1" * 1024} for _ in range(1024)])
        last_ts = opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, opman.dump_collection())
        self.assertEqual(len(opman.doc_managers[0]._search()), 1)
        conn.close()
        repl_set.stop()
コード例 #7
0
    def test_dump_collection(self):
        """Test the dump_collection method

        Cases:

        1. empty oplog
        2. non-empty oplog
        3. non-empty oplog, specified a namespace-set, none of the oplog
           entries are for collections in the namespace-set
        """

        # Test with empty oplog
        self.opman.oplog = self.primary_conn["test"]["emptycollection"]
        last_ts = self.opman.dump_collection()
        self.assertEqual(last_ts, None)

        # Test with non-empty oplog
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        for i in range(1000):
            self.primary_conn["test"]["test"].insert_one({
                "i": i + 500
            })
        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        self.assertEqual(len(self.opman.doc_managers[0]._search()), 1000)

        # Case 3
        # 1MB oplog so that we can rollover quickly
        repl_set = ReplicaSetSingle(oplogSize=1).start()
        conn = repl_set.client()
        dest_mapping_stru = DestMapping(["test.test"], [], {})
        opman = OplogThread(
            primary_client=conn,
            doc_managers=(DocManager(),),
            oplog_progress_dict=LockingDict(),
            dest_mapping_stru=dest_mapping_stru,
            ns_set=set(["test.test"])
        )
        # Insert a document into a ns_set collection
        conn["test"]["test"].insert_one({"test": 1})
        # Cause the oplog to rollover on a non-ns_set collection
        while conn["local"]["oplog.rs"].find_one({"ns": "test.test"}):
            conn["test"]["ignored"].insert_many(
                [{"test": "1" * 1024} for _ in range(1024)])
        last_ts = opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, opman.dump_collection())
        self.assertEqual(len(opman.doc_managers[0]._search()), 1)
        conn.close()
        repl_set.stop()
コード例 #8
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 def setUpClass(cls):
     """ Initializes the cluster
     """
     try:
         os.unlink("oplog.timestamp")
     except OSError:
         pass
     open("oplog.timestamp", "w").close()
     cls.repl_set = ReplicaSetSingle().start()
コード例 #9
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 def setUp(self):
     self.repl_set = ReplicaSetSingle().start()
     self.primary_conn = self.repl_set.client()
     self.oplog_coll = self.primary_conn.local['oplog.rs']
     self.dest_mapping_stru = DestMapping([], [], {})
     self.opman = OplogThread(
         primary_client=self.primary_conn,
         doc_managers=(DocManager(),),
         oplog_progress_dict=LockingDict(),
         dest_mapping_stru=self.dest_mapping_stru,
     )
コード例 #10
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    def setUpClass(cls):
        """ Initializes the cluster
        """
        try:
            os.unlink("oplog.timestamp")
        except OSError:
            pass
        open("oplog.timestamp", "w").close()

        cls.repl_set = ReplicaSetSingle().start()
        cls.conn = cls.repl_set.client()
        cls.connector = Connector(mongo_address=cls.repl_set.uri,
                                  ns_set=["test.test"],
                                  **connector_opts)
        cls.synchronizer = cls.connector.doc_managers[0]
        cls.connector.start()
        assert_soon(lambda: len(cls.connector.shard_set) != 0)
コード例 #11
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 def setUpClass(cls):
     cls.repl_set = ReplicaSetSingle().start()
     cls.primary_conn = cls.repl_set.client()
     cls.oplog_coll = cls.primary_conn.local['oplog.rs']
コード例 #12
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 def setUpClass(cls):
     # Start up a replica set and connect to it
     cls.repl_set = ReplicaSetSingle().start()
     cls.main_connection = cls.repl_set.client()
コード例 #13
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 def setUp(self):
     self.repl_set = ReplicaSetSingle().start()
     self.primary_conn = self.repl_set.client()
     self.oplog_progress = LockingDict()
     self.opman = None
コード例 #14
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class TestCommandReplication(unittest.TestCase):
    def setUp(self):
        self.repl_set = ReplicaSetSingle().start()
        self.primary_conn = self.repl_set.client()
        self.oplog_progress = LockingDict()
        self.opman = None

    def tearDown(self):
        try:
            if self.opman:
                self.opman.join()
        except RuntimeError:
            pass
        close_client(self.primary_conn)
        self.repl_set.stop()

    def initOplogThread(self, namespace_set=None):
        self.docman = CommandLoggerDocManager()
        namespace_config = NamespaceConfig(namespace_set=namespace_set)

        self.docman.command_helper = CommandHelper(namespace_config)
        self.opman = OplogThread(
            primary_client=self.primary_conn,
            doc_managers=(self.docman,),
            oplog_progress_dict=self.oplog_progress,
            namespace_config=namespace_config,
            collection_dump=False
        )
        self.opman.start()

    def test_command_helper(self):

        mapping = {
            'a.x': 'b.x',
            'a.y': 'c.y'
        }

        helper = CommandHelper(NamespaceConfig(
            namespace_set=list(mapping) + ['a.z'], namespace_options=mapping))

        self.assertEqual(set(helper.map_db('a')), set(['a', 'b', 'c']))
        self.assertEqual(helper.map_db('d'), [])

        self.assertEqual(helper.map_namespace('a.x'), 'b.x')
        self.assertEqual(helper.map_namespace('a.z'), 'a.z')
        self.assertEqual(helper.map_namespace('d.x'), None)

        self.assertEqual(helper.map_collection('a', 'x'), ('b', 'x'))
        self.assertEqual(helper.map_collection('a', 'z'), ('a', 'z'))
        self.assertEqual(helper.map_collection('d', 'x'), (None, None))

    def test_create_collection(self):
        self.initOplogThread()
        pymongo.collection.Collection(
            self.primary_conn['test'], 'test', create=True)
        assert_soon(lambda: self.docman.commands)
        command = self.docman.commands[0]
        self.assertEqual(command['create'], 'test')

    def test_create_collection_skipped(self):
        self.initOplogThread(['test.test'])

        pymongo.collection.Collection(
            self.primary_conn['test2'], 'test2', create=True)
        pymongo.collection.Collection(
            self.primary_conn['test'], 'test', create=True)

        assert_soon(lambda: self.docman.commands)
        self.assertEqual(len(self.docman.commands), 1)
        command = self.docman.commands[0]
        self.assertEqual(command['create'], 'test')

    def test_drop_collection(self):
        self.initOplogThread()
        coll = pymongo.collection.Collection(
            self.primary_conn['test'], 'test', create=True)
        coll.drop()
        assert_soon(lambda: len(self.docman.commands) == 2)
        self.assertEqual(self.docman.commands[1], {'drop': 'test'})

    def test_drop_database(self):
        self.initOplogThread()
        pymongo.collection.Collection(
            self.primary_conn['test'], 'test', create=True)
        self.primary_conn.drop_database('test')
        assert_soon(lambda: len(self.docman.commands) == 2)
        self.assertEqual(self.docman.commands[1], {'dropDatabase': 1})

    def test_rename_collection(self):
        self.initOplogThread()
        coll = pymongo.collection.Collection(
            self.primary_conn['test'], 'test', create=True)
        coll.rename('test2')
        assert_soon(lambda: len(self.docman.commands) == 2)
        self.assertEqual(
            self.docman.commands[1].get('renameCollection'),
            'test.test')
        self.assertEqual(
            self.docman.commands[1].get('to'),
            'test.test2')
コード例 #15
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 def setUp(self):
     self.repl_set = ReplicaSetSingle().start()
     self.primary_conn = self.repl_set.client()
     self.oplog_coll = self.primary_conn.local['oplog.rs']
コード例 #16
0
class TestOplogManager(unittest.TestCase):
    """Defines all the testing methods, as well as a method that sets up the
        cluster
    """
    def setUp(self):
        self.repl_set = ReplicaSetSingle().start()
        self.primary_conn = self.repl_set.client()
        self.oplog_coll = self.primary_conn.local['oplog.rs']

    def reset_opman(self, include_ns=None, exclude_ns=None, dest_mapping=None):
        if include_ns is None:
            include_ns = []
        if exclude_ns is None:
            exclude_ns = []
        if dest_mapping is None:
            dest_mapping = {}

        # include_ns must not exist together with exclude_ns
        # dest_mapping must exist together with include_ns
        # those checks have been tested in test_config.py so we skip that here.

        self.dest_mapping_stru = DestMapping(include_ns, exclude_ns,
                                             dest_mapping)
        self.opman = OplogThread(primary_client=self.primary_conn,
                                 doc_managers=(DocManager(), ),
                                 oplog_progress_dict=LockingDict(),
                                 dest_mapping_stru=self.dest_mapping_stru,
                                 ns_set=include_ns,
                                 ex_ns_set=exclude_ns)

    def init_dbs(self):
        # includedb1.* & includedb2.includecol1 are interested collections
        self.primary_conn["includedb1"]["includecol1"].insert_many([{
            "idb1col1":
            i
        } for i in range(1, 3)])

        self.primary_conn["includedb1"]["includecol2"].insert_many([{
            "idb1col2":
            i
        } for i in range(1, 3)])

        self.primary_conn["includedb2"]["includecol1"].insert_many([{
            "idb2col1":
            i
        } for i in range(1, 3)])

        # the others are not interested collections
        self.primary_conn["includedb2"]["excludecol2"].insert_many([{
            "idb2col2":
            i
        } for i in range(1, 3)])

        self.primary_conn["excludedb3"]["excludecol1"].insert_many([{
            "idb3col1":
            i
        } for i in range(1, 3)])

    def tearDown(self):
        try:
            self.opman.join()
        except RuntimeError:
            pass  # OplogThread may not have been started

        for db in self.primary_conn.database_names():
            if db != "local":
                self.primary_conn.drop_database(db)
        close_client(self.primary_conn)
        self.repl_set.stop()

    def test_get_oplog_cursor(self):
        '''Test the get_oplog_cursor method'''

        # Put something in the dbs
        self.init_dbs()

        # timestamp is None - all oplog entries excluding no-ops are returned.
        # wildcard include case no impact the result
        self.reset_opman(["includedb1.*", "includedb2.includecol1"], [], {})

        got_cursor = self.opman.get_oplog_cursor(None)
        oplog_cursor = self.oplog_coll.find({'op': {'$ne': 'n'}})
        self.assertNotEqual(got_cursor, None)
        self.assertEqual(got_cursor.count(), oplog_cursor.count())

        # wildcard exclude case no impact the result
        self.reset_opman([], ["includedb2.excludecol2", "excludedb3.*"], {})

        got_cursor = self.opman.get_oplog_cursor(None)
        oplog_cursor = self.oplog_coll.find({'op': {'$ne': 'n'}})
        self.assertNotEqual(got_cursor, None)
        self.assertEqual(got_cursor.count(), oplog_cursor.count())

        # earliest entry is the only one at/after timestamp
        doc = {"ts": bson.Timestamp(1000, 0), "idb1col1": 1}
        self.primary_conn["includedb1"]["includecol1"].insert_one(doc)
        latest_timestamp = self.opman.get_last_oplog_timestamp()
        cursor = self.opman.get_oplog_cursor(latest_timestamp)
        self.assertNotEqual(cursor, None)
        self.assertEqual(cursor.count(), 1)
        next_entry_id = next(cursor)['o']['_id']
        retrieved = self.primary_conn.includedb1.includecol1.find_one(
            next_entry_id)
        self.assertEqual(retrieved, doc)

        # many entries before and after timestamp
        self.primary_conn["includedb1"]["includecol1"].insert_many([{
            "idb1col1":
            i
        } for i in range(2, 1002)])
        oplog_cursor = self.oplog_coll.find(
            {
                'op': {
                    '$ne': 'n'
                },
                'ns': {
                    '$not': re.compile(r'\.(system|\$cmd)')
                }
            },
            sort=[("ts", pymongo.ASCENDING)])

        # initial insert + 1000 more inserts
        self.assertEqual(oplog_cursor.count(), 11 + 1000)
        pivot = oplog_cursor.skip(400).limit(-1)[0]

        goc_cursor = self.opman.get_oplog_cursor(pivot["ts"])
        self.assertEqual(goc_cursor.count(), 11 + 1000 - 400)

    def test_get_last_oplog_timestamp(self):
        """Test the get_last_oplog_timestamp method"""

        # empty oplog case has been tested in test_oplog_manager.py,
        # skip that here.

        # Put something in the dbs
        self.init_dbs()

        # Test non-empty oplog
        self.reset_opman(["includedb1.*", "includedb2.includecol1"], [], {})
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        for i in range(1000):
            self.primary_conn["includedb1"]["includecol1"].insert_one(
                {"idb1col1": i + 500})
        oplog = self.primary_conn["local"]["oplog.rs"]
        oplog = oplog.find({
            'op': {
                '$ne': 'n'
            }
        }).sort("$natural", pymongo.DESCENDING).limit(-1)[0]
        self.assertEqual(self.opman.get_last_oplog_timestamp(), oplog["ts"])

    def test_dump_collection(self):
        """Test the dump_collection method

        Cases:

        1. no namespace set is set
        2. include namespace set is set
        3. exclude namespace set is set

        empty oplog case has been tested in test_oplog_manager.py,
        skip that here.
        """

        # Put something in the dbs
        self.init_dbs()

        # no namespace set is set
        self.reset_opman([], [], {})
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        self.assertEqual(len(self.opman.doc_managers[0]._search()), 10)

        # include namespace set is set
        self.reset_opman(["includedb1.*", "includedb2.includecol1"], [], {})
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        self.assertEqual(len(self.opman.doc_managers[0]._search()), 6)

        # exclude namespace set is set
        self.reset_opman([], ["includedb2.excludecol2", "excludedb3.*"], {})
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        self.assertEqual(len(self.opman.doc_managers[0]._search()), 6)

    def test_dump_collection_with_error(self):
        """Test the dump_collection method with invalid documents.

        Cases:

        1. non-empty oplog, continue_on_error=True, invalid documents
        """

        self.reset_opman(["includedb1.*", "includedb2.includecol1"], [], {})
        # non-empty oplog, continue_on_error=True, invalid documents
        self.opman.continue_on_error = True
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]

        docs = [{'a': i} for i in range(100)]
        for i in range(50, 60):
            docs[i]['_upsert_exception'] = True
        self.primary_conn['includedb1']['includecol3'].insert_many(docs)

        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        docs = self.opman.doc_managers[0]._search()
        docs = list(filter(lambda doc: 'a' in doc, docs))
        docs.sort(key=lambda doc: doc['a'])

        self.assertEqual(len(docs), 90)
        expected_a = itertools.chain(range(0, 50), range(60, 100))
        for doc, correct_a in zip(docs, expected_a):
            self.assertEqual(doc['a'], correct_a)

    def test_init_cursor(self):
        """Test the init_cursor method

        Cases:

        1. no last checkpoint, no collection dump
        2. no last checkpoint, collection dump ok and stuff to dump
        3. no last checkpoint, nothing to dump, stuff in oplog
        4. no last checkpoint, nothing to dump, nothing in oplog
        5. no last checkpoint, no collection dump, stuff in oplog
        6. last checkpoint exists
        7. last checkpoint is behind
        """

        # N.B. these sub-cases build off of each other and cannot be re-ordered
        # without side-effects

        self.reset_opman(["includedb1.*", "includedb2.includecol1"], [], {})

        # No last checkpoint, no collection dump, nothing in oplog
        # "change oplog collection" to put nothing in oplog
        self.opman.oplog = self.primary_conn["includedb1"]["emptycollection"]
        self.opman.collection_dump = False
        self.assertTrue(
            all(doc['op'] == 'n' for doc in self.opman.init_cursor()[0]))
        self.assertEqual(self.opman.checkpoint, None)

        # No last checkpoint, empty collections, nothing in oplog
        self.opman.collection_dump = True
        cursor, cursor_empty = self.opman.init_cursor()
        self.assertEqual(cursor, None)
        self.assertTrue(cursor_empty)
        self.assertEqual(self.opman.checkpoint, None)

        # No last checkpoint, empty collections, something in oplog
        self.opman.oplog = self.primary_conn['local']['oplog.rs']
        collection = self.primary_conn["includedb1"]["includecol1"]
        collection.insert_one({"idb1col1": 1})
        collection.delete_one({"idb1col1": 1})
        time.sleep(3)
        last_ts = self.opman.get_last_oplog_timestamp()
        cursor, cursor_empty = self.opman.init_cursor()
        self.assertFalse(cursor_empty)
        self.assertEqual(self.opman.checkpoint, last_ts)
        self.assertEqual(self.opman.read_last_checkpoint(), last_ts)

        # No last checkpoint, no collection dump, something in oplog
        # If collection dump is false the checkpoint should not be set
        self.opman.checkpoint = None
        self.opman.oplog_progress = LockingDict()
        self.opman.collection_dump = False
        collection.insert_one({"idb1col1": 2})
        cursor, cursor_empty = self.opman.init_cursor()
        for doc in cursor:
            last_doc = doc
        self.assertEqual(last_doc['o']['idb1col1'], 2)
        self.assertIsNone(self.opman.checkpoint)

        # Last checkpoint exists
        collection.insert_many([{"idb1col1": i + 500} for i in range(1000)])
        entry = list(self.primary_conn["local"]["oplog.rs"].find(skip=200,
                                                                 limit=-2))
        self.opman.update_checkpoint(entry[0]["ts"])
        cursor, cursor_empty = self.opman.init_cursor()
        self.assertEqual(next(cursor)["ts"], entry[1]["ts"])
        self.assertEqual(self.opman.checkpoint, entry[0]["ts"])
        self.assertEqual(self.opman.read_last_checkpoint(), entry[0]["ts"])

        # Last checkpoint is behind
        self.opman.update_checkpoint(bson.Timestamp(1, 0))
        cursor, cursor_empty = self.opman.init_cursor()
        self.assertTrue(cursor_empty)
        self.assertEqual(cursor, None)
        self.assertEqual(self.opman.checkpoint, bson.Timestamp(1, 0))

    def test_namespace_mapping(self):
        """Test mapping of namespaces
        Cases:

        upsert/delete/update of documents:
        1. in namespace set, mapping provided
        2. outside of namespace set, mapping provided
        """

        source_ns_wildcard = ["includedb1.*", "includedb2.includecol1"]
        source_ns = [
            "includedb1.includecol1", "includedb1.includecol2",
            "includedb2.includecol1"
        ]
        phony_ns = ["includedb2.excludecol2", "excludedb3.excludecol1"]
        dest_mapping = {
            "includedb1.*": "newdb1_*.bar",
            "includedb2.includecol1": "newdb2.newcol1"
        }
        self.reset_opman(source_ns_wildcard, [], dest_mapping)
        docman = self.opman.doc_managers[0]
        dest_mapping_stru = self.opman.dest_mapping_stru

        # start replicating
        self.opman.start()

        base_doc = {"_id": 1, "name": "superman"}

        # doc in namespace set
        for ns in source_ns:
            db, coll = ns.split(".", 1)

            # test insert
            self.primary_conn[db][coll].insert_one(base_doc)

            assert_soon(lambda: len(docman._search()) == 1)
            self.assertEqual(docman._search()[0]["ns"],
                             dest_mapping_stru.get(ns))
            bad = [d for d in docman._search() if d["ns"] == ns]
            self.assertEqual(len(bad), 0)

            # test update
            self.primary_conn[db][coll].update_one(
                {"_id": 1}, {"$set": {
                    "weakness": "kryptonite"
                }})

            def update_complete():
                docs = docman._search()
                for d in docs:
                    if d.get("weakness") == "kryptonite":
                        return True
                    return False

            assert_soon(update_complete)
            self.assertEqual(docman._search()[0]["ns"],
                             dest_mapping_stru.get(ns))
            bad = [d for d in docman._search() if d["ns"] == ns]
            self.assertEqual(len(bad), 0)

            # test delete
            self.primary_conn[db][coll].delete_one({"_id": 1})
            assert_soon(lambda: len(docman._search()) == 0)
            bad = [
                d for d in docman._search()
                if d["ns"] == dest_mapping_stru.get(ns)
            ]
            self.assertEqual(len(bad), 0)

            # cleanup
            self.primary_conn[db][coll].delete_many({})
            self.opman.doc_managers[0]._delete()

        # doc not in namespace set
        for ns in phony_ns:
            db, coll = ns.split(".", 1)

            # test insert
            self.primary_conn[db][coll].insert_one(base_doc)
            time.sleep(1)
            self.assertEqual(len(docman._search()), 0)
            # test update
            self.primary_conn[db][coll].update_one(
                {"_id": 1}, {"$set": {
                    "weakness": "kryptonite"
                }})
            time.sleep(1)
            self.assertEqual(len(docman._search()), 0)

    def test_many_targets(self):
        """Test that one OplogThread is capable of replicating to more than
        one target.
        """

        self.reset_opman(["includedb1.*"], [], {})
        doc_managers = [DocManager(), DocManager(), DocManager()]
        self.opman.doc_managers = doc_managers

        # start replicating
        self.opman.start()
        self.primary_conn["includedb1"]["includecol1"].insert_one({
            "name":
            "kermit",
            "color":
            "green"
        })
        self.primary_conn["includedb1"]["includecol2"].insert_one({
            "name":
            "elmo",
            "color":
            "firetruck red"
        })
        self.primary_conn["excludedb2"]["excludecol1"].insert_one({
            "name":
            "panda",
            "color":
            "white and black"
        })

        assert_soon(
            lambda: sum(len(d._search()) for d in doc_managers) == 6,
            "OplogThread should be able to replicate to multiple targets")

        self.primary_conn["includedb1"]["includecol2"].delete_one(
            {"name": "elmo"})

        assert_soon(
            lambda: sum(len(d._search()) for d in doc_managers) == 3,
            "OplogThread should be able to replicate to multiple targets")
        for d in doc_managers:
            self.assertEqual(d._search()[0]["name"], "kermit")
コード例 #17
0
 def setUp(self):
     self.repl_set = ReplicaSetSingle().start()
     self.primary_conn = self.repl_set.client()
     self.oplog_progress = LockingDict()
     self.opman = None
コード例 #18
0
class TestCommandReplication(unittest.TestCase):
    def setUp(self):
        self.repl_set = ReplicaSetSingle().start()
        self.primary_conn = self.repl_set.client()
        self.oplog_progress = LockingDict()
        self.opman = None

    def tearDown(self):
        try:
            if self.opman:
                self.opman.join()
        except RuntimeError:
            pass
        close_client(self.primary_conn)
        self.repl_set.stop()

    def initOplogThread(self, namespace_set=None):
        self.docman = CommandLoggerDocManager()
        namespace_config = NamespaceConfig(namespace_set=namespace_set)

        self.docman.command_helper = CommandHelper(namespace_config)
        self.opman = OplogThread(
            primary_client=self.primary_conn,
            doc_managers=(self.docman, ),
            oplog_progress_dict=self.oplog_progress,
            namespace_config=namespace_config,
            collection_dump=False,
        )
        self.opman.start()

    def test_command_helper(self):

        mapping = {"a.x": "b.x", "a.y": "c.y"}

        helper = CommandHelper(
            NamespaceConfig(namespace_set=list(mapping) + ["a.z"],
                            namespace_options=mapping))

        self.assertEqual(set(helper.map_db("a")), set(["a", "b", "c"]))
        self.assertEqual(helper.map_db("d"), [])

        self.assertEqual(helper.map_namespace("a.x"), "b.x")
        self.assertEqual(helper.map_namespace("a.z"), "a.z")
        self.assertEqual(helper.map_namespace("d.x"), None)

        self.assertEqual(helper.map_collection("a", "x"), ("b", "x"))
        self.assertEqual(helper.map_collection("a", "z"), ("a", "z"))
        self.assertEqual(helper.map_collection("d", "x"), (None, None))

    def test_create_collection(self):
        self.initOplogThread()
        pymongo.collection.Collection(self.primary_conn["test"],
                                      "test",
                                      create=True)
        assert_soon(lambda: self.docman.commands)
        command = self.docman.commands[0]
        self.assertEqual(command["create"], "test")

    def test_create_collection_skipped(self):
        self.initOplogThread(["test.test"])

        pymongo.collection.Collection(self.primary_conn["test2"],
                                      "test2",
                                      create=True)
        pymongo.collection.Collection(self.primary_conn["test"],
                                      "test",
                                      create=True)

        assert_soon(lambda: self.docman.commands)
        self.assertEqual(len(self.docman.commands), 1)
        command = self.docman.commands[0]
        self.assertEqual(command["create"], "test")

    def test_drop_collection(self):
        self.initOplogThread()
        coll = pymongo.collection.Collection(self.primary_conn["test"],
                                             "test",
                                             create=True)
        coll.drop()
        assert_soon(lambda: len(self.docman.commands) == 2)
        self.assertEqual(self.docman.commands[1], {"drop": "test"})

    def test_drop_database(self):
        self.initOplogThread()
        pymongo.collection.Collection(self.primary_conn["test"],
                                      "test",
                                      create=True)
        self.primary_conn.drop_database("test")
        assert_soon(lambda: len(self.docman.commands) == 2)
        self.assertEqual(self.docman.commands[1], {"dropDatabase": 1})

    def test_rename_collection(self):
        self.initOplogThread()
        coll = pymongo.collection.Collection(self.primary_conn["test"],
                                             "test",
                                             create=True)
        coll.rename("test2")
        assert_soon(lambda: len(self.docman.commands) == 2)
        self.assertEqual(self.docman.commands[1].get("renameCollection"),
                         "test.test")
        self.assertEqual(self.docman.commands[1].get("to"), "test.test2")
コード例 #19
0
 def setUp(self):
     self.repl_set = ReplicaSetSingle().start()
     self.primary_conn = self.repl_set.client()
     self.oplog_coll = self.primary_conn.local['oplog.rs']
コード例 #20
0
class TestOplogManager(unittest.TestCase):
    """Defines all the testing methods, as well as a method that sets up the
        cluster
    """

    def setUp(self):
        self.repl_set = ReplicaSetSingle().start()
        self.primary_conn = self.repl_set.client()
        self.oplog_coll = self.primary_conn.local['oplog.rs']

    def reset_opman(self, include_ns=None, exclude_ns=None, dest_mapping=None):
        if include_ns is None:
            include_ns = []
        if exclude_ns is None:
            exclude_ns = []
        if dest_mapping is None:
            dest_mapping = {}

        # include_ns must not exist together with exclude_ns
        # dest_mapping must exist together with include_ns
        # those checks have been tested in test_config.py so we skip that here.

        self.dest_mapping_stru = DestMapping(include_ns, exclude_ns,
                                             dest_mapping)
        self.opman = OplogThread(
            primary_client=self.primary_conn,
            doc_managers=(DocManager(),),
            oplog_progress_dict=LockingDict(),
            dest_mapping_stru=self.dest_mapping_stru,
            ns_set=include_ns,
            ex_ns_set=exclude_ns
        )

    def init_dbs(self):
        # includedb1.* & includedb2.includecol1 are interested collections
        self.primary_conn["includedb1"]["includecol1"].insert_many(
            [{"idb1col1": i} for i in range(1, 3)])

        self.primary_conn["includedb1"]["includecol2"].insert_many(
            [{"idb1col2": i} for i in range(1, 3)])

        self.primary_conn["includedb2"]["includecol1"].insert_many(
            [{"idb2col1": i} for i in range(1, 3)])

        # the others are not interested collections
        self.primary_conn["includedb2"]["excludecol2"].insert_many(
            [{"idb2col2": i} for i in range(1, 3)])

        self.primary_conn["excludedb3"]["excludecol1"].insert_many(
            [{"idb3col1": i} for i in range(1, 3)])

    def tearDown(self):
        try:
            self.opman.join()
        except RuntimeError:
            pass                # OplogThread may not have been started

        for db in self.primary_conn.database_names():
            if db != "local":
                self.primary_conn.drop_database(db)
        close_client(self.primary_conn)
        self.repl_set.stop()

    def test_get_oplog_cursor(self):
        '''Test the get_oplog_cursor method'''

        # Put something in the dbs
        self.init_dbs()

        # timestamp is None - all oplog entries excluding no-ops are returned.
        # wildcard include case no impact the result
        self.reset_opman(["includedb1.*", "includedb2.includecol1"], [], {})

        got_cursor = self.opman.get_oplog_cursor(None)
        oplog_cursor = self.oplog_coll.find(
            {'op': {'$ne': 'n'}})
        self.assertNotEqual(got_cursor, None)
        self.assertEqual(got_cursor.count(), oplog_cursor.count())

        # wildcard exclude case no impact the result
        self.reset_opman([], ["includedb2.excludecol2", "excludedb3.*"], {})

        got_cursor = self.opman.get_oplog_cursor(None)
        oplog_cursor = self.oplog_coll.find(
            {'op': {'$ne': 'n'}})
        self.assertNotEqual(got_cursor, None)
        self.assertEqual(got_cursor.count(), oplog_cursor.count())

        # earliest entry is the only one at/after timestamp
        doc = {"ts": bson.Timestamp(1000, 0), "idb1col1": 1}
        self.primary_conn["includedb1"]["includecol1"].insert_one(doc)
        latest_timestamp = self.opman.get_last_oplog_timestamp()
        cursor = self.opman.get_oplog_cursor(latest_timestamp)
        self.assertNotEqual(cursor, None)
        self.assertEqual(cursor.count(), 1)
        next_entry_id = next(cursor)['o']['_id']
        retrieved = self.primary_conn.includedb1.includecol1.find_one(
                    next_entry_id)
        self.assertEqual(retrieved, doc)

        # many entries before and after timestamp
        self.primary_conn["includedb1"]["includecol1"].insert_many(
            [{"idb1col1": i} for i in range(2, 1002)])
        oplog_cursor = self.oplog_coll.find(
            {'op': {'$ne': 'n'},
             'ns': {'$not': re.compile(r'\.(system|\$cmd)')}},
            sort=[("ts", pymongo.ASCENDING)])

        # initial insert + 1000 more inserts
        self.assertEqual(oplog_cursor.count(), 11 + 1000)
        pivot = oplog_cursor.skip(400).limit(-1)[0]

        goc_cursor = self.opman.get_oplog_cursor(pivot["ts"])
        self.assertEqual(goc_cursor.count(), 11 + 1000 - 400)

    def test_get_last_oplog_timestamp(self):
        """Test the get_last_oplog_timestamp method"""

        # empty oplog case has been tested in test_oplog_manager.py,
        # skip that here.

        # Put something in the dbs
        self.init_dbs()

        # Test non-empty oplog
        self.reset_opman(["includedb1.*", "includedb2.includecol1"], [], {})
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        for i in range(1000):
            self.primary_conn["includedb1"]["includecol1"].insert_one({
                "idb1col1": i + 500
            })
        oplog = self.primary_conn["local"]["oplog.rs"]
        oplog = oplog.find(
                {'op': {'$ne': 'n'}}).sort(
                "$natural", pymongo.DESCENDING).limit(-1)[0]
        self.assertEqual(self.opman.get_last_oplog_timestamp(),
                         oplog["ts"])

    def test_dump_collection(self):
        """Test the dump_collection method

        Cases:

        1. no namespace set is set
        2. include namespace set is set
        3. exclude namespace set is set

        empty oplog case has been tested in test_oplog_manager.py,
        skip that here.
        """

        # Put something in the dbs
        self.init_dbs()

        # no namespace set is set
        self.reset_opman([], [], {})
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        self.assertEqual(len(self.opman.doc_managers[0]._search()), 10)

        # include namespace set is set
        self.reset_opman(["includedb1.*", "includedb2.includecol1"], [], {})
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        self.assertEqual(len(self.opman.doc_managers[0]._search()), 6)

        # exclude namespace set is set
        self.reset_opman([], ["includedb2.excludecol2", "excludedb3.*"], {})
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        self.assertEqual(len(self.opman.doc_managers[0]._search()), 6)

    def test_dump_collection_with_error(self):
        """Test the dump_collection method with invalid documents.

        Cases:

        1. non-empty oplog, continue_on_error=True, invalid documents
        """

        self.reset_opman(["includedb1.*", "includedb2.includecol1"], [], {})
        # non-empty oplog, continue_on_error=True, invalid documents
        self.opman.continue_on_error = True
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]

        docs = [{'a': i} for i in range(100)]
        for i in range(50, 60):
            docs[i]['_upsert_exception'] = True
        self.primary_conn['includedb1']['includecol3'].insert_many(docs)

        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        docs = self.opman.doc_managers[0]._search()
        docs = list(filter(lambda doc: 'a' in doc, docs))
        docs.sort(key=lambda doc: doc['a'])

        self.assertEqual(len(docs), 90)
        expected_a = itertools.chain(range(0, 50), range(60, 100))
        for doc, correct_a in zip(docs, expected_a):
            self.assertEqual(doc['a'], correct_a)

    def test_init_cursor(self):
        """Test the init_cursor method

        Cases:

        1. no last checkpoint, no collection dump
        2. no last checkpoint, collection dump ok and stuff to dump
        3. no last checkpoint, nothing to dump, stuff in oplog
        4. no last checkpoint, nothing to dump, nothing in oplog
        5. no last checkpoint, no collection dump, stuff in oplog
        6. last checkpoint exists
        7. last checkpoint is behind
        """

        # N.B. these sub-cases build off of each other and cannot be re-ordered
        # without side-effects

        self.reset_opman(["includedb1.*", "includedb2.includecol1"], [], {})

        # No last checkpoint, no collection dump, nothing in oplog
        # "change oplog collection" to put nothing in oplog
        self.opman.oplog = self.primary_conn["includedb1"]["emptycollection"]
        self.opman.collection_dump = False
        self.assertTrue(all(doc['op'] == 'n'
                            for doc in self.opman.init_cursor()[0]))
        self.assertEqual(self.opman.checkpoint, None)

        # No last checkpoint, empty collections, nothing in oplog
        self.opman.collection_dump = True
        cursor, cursor_empty = self.opman.init_cursor()
        self.assertEqual(cursor, None)
        self.assertTrue(cursor_empty)
        self.assertEqual(self.opman.checkpoint, None)

        # No last checkpoint, empty collections, something in oplog
        self.opman.oplog = self.primary_conn['local']['oplog.rs']
        collection = self.primary_conn["includedb1"]["includecol1"]
        collection.insert_one({"idb1col1": 1})
        collection.delete_one({"idb1col1": 1})
        time.sleep(3)
        last_ts = self.opman.get_last_oplog_timestamp()
        cursor, cursor_empty = self.opman.init_cursor()
        self.assertFalse(cursor_empty)
        self.assertEqual(self.opman.checkpoint, last_ts)
        self.assertEqual(self.opman.read_last_checkpoint(), last_ts)

        # No last checkpoint, no collection dump, something in oplog
        # If collection dump is false the checkpoint should not be set
        self.opman.checkpoint = None
        self.opman.oplog_progress = LockingDict()
        self.opman.collection_dump = False
        collection.insert_one({"idb1col1": 2})
        cursor, cursor_empty = self.opman.init_cursor()
        for doc in cursor:
            last_doc = doc
        self.assertEqual(last_doc['o']['idb1col1'], 2)
        self.assertIsNone(self.opman.checkpoint)

        # Last checkpoint exists
        collection.insert_many([{"idb1col1": i + 500} for i in range(1000)])
        entry = list(
            self.primary_conn["local"]["oplog.rs"].find(skip=200, limit=-2))
        self.opman.update_checkpoint(entry[0]["ts"])
        cursor, cursor_empty = self.opman.init_cursor()
        self.assertEqual(next(cursor)["ts"], entry[1]["ts"])
        self.assertEqual(self.opman.checkpoint, entry[0]["ts"])
        self.assertEqual(self.opman.read_last_checkpoint(), entry[0]["ts"])

        # Last checkpoint is behind
        self.opman.update_checkpoint(bson.Timestamp(1, 0))
        cursor, cursor_empty = self.opman.init_cursor()
        self.assertTrue(cursor_empty)
        self.assertEqual(cursor, None)
        self.assertEqual(self.opman.checkpoint, bson.Timestamp(1, 0))

    def test_namespace_mapping(self):
        """Test mapping of namespaces
        Cases:

        upsert/delete/update of documents:
        1. in namespace set, mapping provided
        2. outside of namespace set, mapping provided
        """

        source_ns_wildcard = ["includedb1.*", "includedb2.includecol1"]
        source_ns = ["includedb1.includecol1",
                     "includedb1.includecol2",
                     "includedb2.includecol1"]
        phony_ns = ["includedb2.excludecol2", "excludedb3.excludecol1"]
        dest_mapping = {
                        "includedb1.*": "newdb1_*.bar",
                        "includedb2.includecol1": "newdb2.newcol1"
                        }
        self.reset_opman(source_ns_wildcard, [], dest_mapping)
        docman = self.opman.doc_managers[0]
        dest_mapping_stru = self.opman.dest_mapping_stru

        # start replicating
        self.opman.start()

        base_doc = {"_id": 1, "name": "superman"}

        # doc in namespace set
        for ns in source_ns:
            db, coll = ns.split(".", 1)

            # test insert
            self.primary_conn[db][coll].insert_one(base_doc)

            assert_soon(lambda: len(docman._search()) == 1)
            self.assertEqual(docman._search()[0]["ns"],
                             dest_mapping_stru.get(ns))
            bad = [d for d in docman._search() if d["ns"] == ns]
            self.assertEqual(len(bad), 0)

            # test update
            self.primary_conn[db][coll].update_one(
                {"_id": 1},
                {"$set": {"weakness": "kryptonite"}}
            )

            def update_complete():
                docs = docman._search()
                for d in docs:
                    if d.get("weakness") == "kryptonite":
                        return True
                    return False
            assert_soon(update_complete)
            self.assertEqual(docman._search()[0]["ns"],
                             dest_mapping_stru.get(ns))
            bad = [d for d in docman._search() if d["ns"] == ns]
            self.assertEqual(len(bad), 0)

            # test delete
            self.primary_conn[db][coll].delete_one({"_id": 1})
            assert_soon(lambda: len(docman._search()) == 0)
            bad = [d for d in docman._search()
                   if d["ns"] == dest_mapping_stru.get(ns)]
            self.assertEqual(len(bad), 0)

            # cleanup
            self.primary_conn[db][coll].delete_many({})
            self.opman.doc_managers[0]._delete()

        # doc not in namespace set
        for ns in phony_ns:
            db, coll = ns.split(".", 1)

            # test insert
            self.primary_conn[db][coll].insert_one(base_doc)
            time.sleep(1)
            self.assertEqual(len(docman._search()), 0)
            # test update
            self.primary_conn[db][coll].update_one(
                {"_id": 1},
                {"$set": {"weakness": "kryptonite"}}
            )
            time.sleep(1)
            self.assertEqual(len(docman._search()), 0)

    def test_many_targets(self):
        """Test that one OplogThread is capable of replicating to more than
        one target.
        """

        self.reset_opman(["includedb1.*"], [], {})
        doc_managers = [DocManager(), DocManager(), DocManager()]
        self.opman.doc_managers = doc_managers

        # start replicating
        self.opman.start()
        self.primary_conn["includedb1"]["includecol1"].insert_one({
            "name": "kermit",
            "color": "green"
        })
        self.primary_conn["includedb1"]["includecol2"].insert_one({
            "name": "elmo",
            "color": "firetruck red"
        })
        self.primary_conn["excludedb2"]["excludecol1"].insert_one({
            "name": "panda",
            "color": "white and black"
        })

        assert_soon(
            lambda: sum(len(d._search()) for d in doc_managers) == 6,
            "OplogThread should be able to replicate to multiple targets"
        )

        self.primary_conn["includedb1"]["includecol2"].delete_one({
            "name": "elmo"
        })

        assert_soon(
            lambda: sum(len(d._search()) for d in doc_managers) == 3,
            "OplogThread should be able to replicate to multiple targets"
        )
        for d in doc_managers:
            self.assertEqual(d._search()[0]["name"], "kermit")
コード例 #21
0
class TestOplogManager(unittest.TestCase):
    """Defines all the testing methods, as well as a method that sets up the
        cluster
    """

    def setUp(self):
        self.repl_set = ReplicaSetSingle().start()
        self.primary_conn = self.repl_set.client()
        self.oplog_coll = self.primary_conn.local["oplog.rs"]
        self.opman = OplogThread(
            primary_client=self.primary_conn,
            doc_managers=(DocManager(),),
            oplog_progress_dict=LockingDict(),
            namespace_config=NamespaceConfig(
                namespace_options={"test.*": True, "gridfs.*": {"gridfs": True}}
            ),
        )

    def tearDown(self):
        try:
            self.opman.join()
        except RuntimeError:
            pass  # OplogThread may not have been started
        self.primary_conn.drop_database("test")
        close_client(self.primary_conn)
        self.repl_set.stop()

    def test_get_oplog_cursor(self):
        """Test the get_oplog_cursor method"""

        # timestamp is None - all oplog entries excluding no-ops are returned.
        cursor = self.opman.get_oplog_cursor(None)
        self.assertEqual(
            cursor.count(),
            self.primary_conn["local"]["oplog.rs"].find({"op": {"$ne": "n"}}).count(),
        )

        # earliest entry is the only one at/after timestamp
        doc = {"ts": bson.Timestamp(1000, 0), "i": 1}
        self.primary_conn["test"]["test"].insert_one(doc)
        latest_timestamp = self.opman.get_last_oplog_timestamp()
        cursor = self.opman.get_oplog_cursor(latest_timestamp)
        self.assertNotEqual(cursor, None)
        self.assertEqual(cursor.count(), 1)
        next_entry_id = next(cursor)["o"]["_id"]
        retrieved = self.primary_conn.test.test.find_one(next_entry_id)
        self.assertEqual(retrieved, doc)

        # many entries before and after timestamp
        self.primary_conn["test"]["test"].insert_many(
            [{"i": i} for i in range(2, 1002)]
        )
        oplog_cursor = self.oplog_coll.find(
            {"op": {"$ne": "n"}, "ns": {"$not": re.compile(r"\.(system|\$cmd)")}},
            sort=[("ts", pymongo.ASCENDING)],
        )

        # initial insert + 1000 more inserts
        self.assertEqual(oplog_cursor.count(), 1 + 1000)
        pivot = oplog_cursor.skip(400).limit(-1)[0]

        goc_cursor = self.opman.get_oplog_cursor(pivot["ts"])
        self.assertEqual(goc_cursor.count(), 1 + 1000 - 400)

    def test_get_last_oplog_timestamp(self):
        """Test the get_last_oplog_timestamp method"""

        # "empty" the oplog
        self.opman.oplog = self.primary_conn["test"]["emptycollection"]
        self.assertEqual(self.opman.get_last_oplog_timestamp(), None)

        # Test non-empty oplog
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        for i in range(1000):
            self.primary_conn["test"]["test"].insert_one({"i": i + 500})
        oplog = self.primary_conn["local"]["oplog.rs"]
        oplog = oplog.find().sort("$natural", pymongo.DESCENDING).limit(-1)[0]
        self.assertEqual(self.opman.get_last_oplog_timestamp(), oplog["ts"])

    def test_dump_collection(self):
        """Test the dump_collection method

        Cases:

        1. empty oplog
        2. non-empty oplog, with gridfs collections
        3. non-empty oplog, specified a namespace-set, none of the oplog
           entries are for collections in the namespace-set
        """

        # Test with empty oplog
        self.opman.oplog = self.primary_conn["test"]["emptycollection"]
        last_ts = self.opman.dump_collection()
        self.assertEqual(last_ts, None)

        # Test with non-empty oplog with gridfs collections
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        # Insert 10 gridfs files
        for i in range(10):
            fs = gridfs.GridFS(self.primary_conn["gridfs"], collection="test" + str(i))
            fs.put(b"hello world")
        # Insert 1000 documents
        for i in range(1000):
            self.primary_conn["test"]["test"].insert_one({"i": i + 500})
        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        self.assertEqual(len(self.opman.doc_managers[0]._search()), 1010)

        # Case 3
        # 1MB oplog so that we can rollover quickly
        repl_set = ReplicaSetSingle(oplogSize=1).start()
        conn = repl_set.client()
        opman = OplogThread(
            primary_client=conn,
            doc_managers=(DocManager(),),
            oplog_progress_dict=LockingDict(),
            namespace_config=NamespaceConfig(namespace_set=["test.test"]),
        )
        # Insert a document into an included collection
        conn["test"]["test"].insert_one({"test": 1})
        # Cause the oplog to rollover on a non-included collection
        while conn["local"]["oplog.rs"].find_one({"ns": "test.test"}):
            conn["test"]["ignored"].insert_many(
                [{"test": "1" * 1024} for _ in range(1024)]
            )
        last_ts = opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, opman.dump_collection())
        self.assertEqual(len(opman.doc_managers[0]._search()), 1)
        conn.close()
        repl_set.stop()

    def test_skipped_oplog_entry_updates_checkpoint(self):
        repl_set = ReplicaSetSingle().start()
        conn = repl_set.client()
        opman = OplogThread(
            primary_client=conn,
            doc_managers=(DocManager(),),
            oplog_progress_dict=LockingDict(),
            namespace_config=NamespaceConfig(namespace_set=["test.test"]),
        )
        opman.start()

        # Insert a document into an included collection
        conn["test"]["test"].insert_one({"test": 1})
        last_ts = opman.get_last_oplog_timestamp()
        assert_soon(
            lambda: last_ts == opman.checkpoint,
            "OplogThread never updated checkpoint to non-skipped " "entry.",
        )
        self.assertEqual(len(opman.doc_managers[0]._search()), 1)

        # Make sure that the oplog thread updates its checkpoint on every
        # oplog entry.
        conn["test"]["ignored"].insert_one({"test": 1})
        last_ts = opman.get_last_oplog_timestamp()
        assert_soon(
            lambda: last_ts == opman.checkpoint,
            "OplogThread never updated checkpoint to skipped entry.",
        )
        opman.join()
        conn.close()
        repl_set.stop()

    def test_dump_collection_with_error(self):
        """Test the dump_collection method with invalid documents.

        Cases:

        1. non-empty oplog, continue_on_error=True, invalid documents
        """

        # non-empty oplog, continue_on_error=True, invalid documents
        self.opman.continue_on_error = True
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]

        docs = [{"a": i} for i in range(100)]
        for i in range(50, 60):
            docs[i]["_upsert_exception"] = True
        self.primary_conn["test"]["test"].insert_many(docs)

        last_ts = self.opman.get_last_oplog_timestamp()
        self.assertEqual(last_ts, self.opman.dump_collection())
        docs = self.opman.doc_managers[0]._search()
        docs.sort(key=lambda doc: doc["a"])

        self.assertEqual(len(docs), 90)
        expected_a = itertools.chain(range(0, 50), range(60, 100))
        for doc, correct_a in zip(docs, expected_a):
            self.assertEqual(doc["a"], correct_a)

    def test_dump_collection_cancel(self):
        """Test that dump_collection returns None when cancelled."""
        self.primary_conn["test"]["test"].insert_one({"test": "1"})

        # Pretend that the OplogThead was cancelled
        self.opman.running = False
        self.assertIsNone(self.opman.dump_collection())

    def test_init_cursor(self):
        """Test the init_cursor method

        Cases:

        1. no last checkpoint, no collection dump
        2. no last checkpoint, collection dump ok and stuff to dump
        3. no last checkpoint, nothing to dump, stuff in oplog
        4. no last checkpoint, nothing to dump, nothing in oplog
        5. no last checkpoint, no collection dump, stuff in oplog
        6. last checkpoint exists
        7. last checkpoint is behind
        """

        # N.B. these sub-cases build off of each other and cannot be re-ordered
        # without side-effects

        # No last checkpoint, no collection dump, nothing in oplog
        # "change oplog collection" to put nothing in oplog
        self.opman.oplog = self.primary_conn["test"]["emptycollection"]
        self.opman.collection_dump = False
        self.assertTrue(all(doc["op"] == "n" for doc in self.opman.init_cursor()[0]))
        self.assertEqual(self.opman.checkpoint, None)

        # No last checkpoint, empty collections, nothing in oplog
        self.opman.collection_dump = True
        cursor, cursor_empty = self.opman.init_cursor()
        self.assertEqual(cursor, None)
        self.assertTrue(cursor_empty)
        self.assertEqual(self.opman.checkpoint, None)

        # No last checkpoint, empty collections, something in oplog
        self.opman.oplog = self.primary_conn["local"]["oplog.rs"]
        collection = self.primary_conn["test"]["test"]
        collection.insert_one({"i": 1})
        collection.delete_one({"i": 1})
        time.sleep(3)
        last_ts = self.opman.get_last_oplog_timestamp()
        cursor, cursor_empty = self.opman.init_cursor()
        self.assertFalse(cursor_empty)
        self.assertEqual(self.opman.checkpoint, last_ts)
        self.assertEqual(self.opman.read_last_checkpoint(), last_ts)

        # No last checkpoint, no collection dump, something in oplog
        # If collection dump is false the checkpoint should not be set
        self.opman.checkpoint = None
        self.opman.oplog_progress = LockingDict()
        self.opman.collection_dump = False
        collection.insert_one({"i": 2})
        cursor, cursor_empty = self.opman.init_cursor()
        for doc in cursor:
            last_doc = doc
        self.assertEqual(last_doc["o"]["i"], 2)
        self.assertIsNone(self.opman.checkpoint)

        # Last checkpoint exists, no collection dump, something in oplog
        collection.insert_many([{"i": i + 500} for i in range(1000)])
        entry = list(self.primary_conn["local"]["oplog.rs"].find(skip=200, limit=-2))
        self.opman.update_checkpoint(entry[0]["ts"])
        cursor, cursor_empty = self.opman.init_cursor()
        self.assertEqual(next(cursor)["ts"], entry[1]["ts"])
        self.assertEqual(self.opman.checkpoint, entry[0]["ts"])
        self.assertEqual(self.opman.read_last_checkpoint(), entry[0]["ts"])

        # Last checkpoint is behind
        self.opman.update_checkpoint(bson.Timestamp(1, 0))
        cursor, cursor_empty = self.opman.init_cursor()
        self.assertTrue(cursor_empty)
        self.assertEqual(cursor, None)
        self.assertEqual(self.opman.checkpoint, bson.Timestamp(1, 0))

    def test_namespace_mapping(self):
        """Test mapping of namespaces
        Cases:

        upsert/delete/update of documents:
        1. in namespace set, mapping provided
        2. outside of namespace set, mapping provided
        """

        source_ns = ["test.test1", "test.test2"]
        phony_ns = ["test.phony1", "test.phony2"]
        dest_mapping = {
            "test.test1": "test.test1_dest",
            "test.test2": "test.test2_dest",
        }
        self.opman.namespace_config = NamespaceConfig(
            namespace_set=source_ns, namespace_options=dest_mapping
        )
        docman = self.opman.doc_managers[0]
        # start replicating
        self.opman.start()

        base_doc = {"_id": 1, "name": "superman"}

        # doc in namespace set
        for ns in source_ns:
            db, coll = ns.split(".", 1)

            # test insert
            self.primary_conn[db][coll].insert_one(base_doc)

            assert_soon(lambda: len(docman._search()) == 1)
            self.assertEqual(docman._search()[0]["ns"], dest_mapping[ns])
            bad = [d for d in docman._search() if d["ns"] == ns]
            self.assertEqual(len(bad), 0)

            # test update
            self.primary_conn[db][coll].update_one(
                {"_id": 1}, {"$set": {"weakness": "kryptonite"}}
            )

            def update_complete():
                docs = docman._search()
                for d in docs:
                    if d.get("weakness") == "kryptonite":
                        return True
                    return False

            assert_soon(update_complete)
            self.assertEqual(docman._search()[0]["ns"], dest_mapping[ns])
            bad = [d for d in docman._search() if d["ns"] == ns]
            self.assertEqual(len(bad), 0)

            # test delete
            self.primary_conn[db][coll].delete_one({"_id": 1})
            assert_soon(lambda: len(docman._search()) == 0)
            bad = [d for d in docman._search() if d["ns"] == dest_mapping[ns]]
            self.assertEqual(len(bad), 0)

            # cleanup
            self.primary_conn[db][coll].delete_many({})
            self.opman.doc_managers[0]._delete()

        # doc not in namespace set
        for ns in phony_ns:
            db, coll = ns.split(".", 1)

            # test insert
            self.primary_conn[db][coll].insert_one(base_doc)
            time.sleep(1)
            self.assertEqual(len(docman._search()), 0)
            # test update
            self.primary_conn[db][coll].update_one(
                {"_id": 1}, {"$set": {"weakness": "kryptonite"}}
            )
            time.sleep(1)
            self.assertEqual(len(docman._search()), 0)

    def test_many_targets(self):
        """Test that one OplogThread is capable of replicating to more than
        one target.
        """
        doc_managers = [DocManager(), DocManager(), DocManager()]
        self.opman.doc_managers = doc_managers

        # start replicating
        self.opman.start()
        self.primary_conn["test"]["test"].insert_one(
            {"name": "kermit", "color": "green"}
        )
        self.primary_conn["test"]["test"].insert_one(
            {"name": "elmo", "color": "firetruck red"}
        )

        assert_soon(
            lambda: sum(len(d._search()) for d in doc_managers) == 6,
            "OplogThread should be able to replicate to multiple targets",
        )

        self.primary_conn["test"]["test"].delete_one({"name": "elmo"})

        assert_soon(
            lambda: sum(len(d._search()) for d in doc_managers) == 3,
            "OplogThread should be able to replicate to multiple targets",
        )
        for d in doc_managers:
            self.assertEqual(d._search()[0]["name"], "kermit")

    def test_upgrade_oplog_progress(self):
        first_oplog_ts = self.opman.oplog.find_one()["ts"]
        # Old format oplog progress file:
        progress = {str(self.opman.oplog): bson_ts_to_long(first_oplog_ts)}
        # Set up oplog managers to use the old format.
        oplog_progress = LockingDict()
        oplog_progress.dict = progress
        self.opman.oplog_progress = oplog_progress
        # Cause the oplog managers to update their checkpoints.
        self.opman.update_checkpoint(first_oplog_ts)
        # New format should be in place now.
        new_format = {self.opman.replset_name: first_oplog_ts}
        self.assertEqual(new_format, self.opman.oplog_progress.get_dict())
コード例 #22
0
class TestCommandReplication(unittest.TestCase):
    def setUp(self):
        self.repl_set = ReplicaSetSingle().start()
        self.primary_conn = self.repl_set.client()
        self.oplog_progress = LockingDict()
        self.opman = None

    def tearDown(self):
        try:
            if self.opman:
                self.opman.join()
        except RuntimeError:
            pass
        close_client(self.primary_conn)
        self.repl_set.stop()

    def initOplogThread(self, namespace_set=None):
        self.docman = CommandLoggerDocManager()
        namespace_config = NamespaceConfig(namespace_set=namespace_set)

        self.docman.command_helper = CommandHelper(namespace_config)
        self.opman = OplogThread(
            primary_client=self.primary_conn,
            doc_managers=(self.docman,),
            oplog_progress_dict=self.oplog_progress,
            namespace_config=namespace_config,
            collection_dump=False,
        )
        self.opman.start()

    def test_command_helper(self):

        mapping = {"a.x": "b.x", "a.y": "c.y"}

        helper = CommandHelper(
            NamespaceConfig(
                namespace_set=list(mapping) + ["a.z"], namespace_options=mapping
            )
        )

        self.assertEqual(set(helper.map_db("a")), set(["a", "b", "c"]))
        self.assertEqual(helper.map_db("d"), [])

        self.assertEqual(helper.map_namespace("a.x"), "b.x")
        self.assertEqual(helper.map_namespace("a.z"), "a.z")
        self.assertEqual(helper.map_namespace("d.x"), None)

        self.assertEqual(helper.map_collection("a", "x"), ("b", "x"))
        self.assertEqual(helper.map_collection("a", "z"), ("a", "z"))
        self.assertEqual(helper.map_collection("d", "x"), (None, None))

    def test_create_collection(self):
        self.initOplogThread()
        pymongo.collection.Collection(self.primary_conn["test"], "test", create=True)
        assert_soon(lambda: self.docman.commands)
        command = self.docman.commands[0]
        self.assertEqual(command["create"], "test")

    def test_create_collection_skipped(self):
        self.initOplogThread(["test.test"])

        pymongo.collection.Collection(self.primary_conn["test2"], "test2", create=True)
        pymongo.collection.Collection(self.primary_conn["test"], "test", create=True)

        assert_soon(lambda: self.docman.commands)
        self.assertEqual(len(self.docman.commands), 1)
        command = self.docman.commands[0]
        self.assertEqual(command["create"], "test")

    def test_drop_collection(self):
        self.initOplogThread()
        coll = pymongo.collection.Collection(
            self.primary_conn["test"], "test", create=True
        )
        coll.drop()
        assert_soon(lambda: len(self.docman.commands) == 2)
        self.assertEqual(self.docman.commands[1], {"drop": "test"})

    def test_drop_database(self):
        self.initOplogThread()
        pymongo.collection.Collection(self.primary_conn["test"], "test", create=True)
        self.primary_conn.drop_database("test")
        assert_soon(lambda: len(self.docman.commands) == 2)
        self.assertEqual(self.docman.commands[1], {"dropDatabase": 1})

    def test_rename_collection(self):
        self.initOplogThread()
        coll = pymongo.collection.Collection(
            self.primary_conn["test"], "test", create=True
        )
        coll.rename("test2")
        assert_soon(lambda: len(self.docman.commands) == 2)
        self.assertEqual(self.docman.commands[1].get("renameCollection"), "test.test")
        self.assertEqual(self.docman.commands[1].get("to"), "test.test2")
コード例 #23
0
class TestCommandReplication(unittest.TestCase):
    def setUp(self):
        self.repl_set = ReplicaSetSingle().start()
        self.primary_conn = self.repl_set.client()
        self.oplog_progress = LockingDict()
        self.opman = None

    def tearDown(self):
        try:
            if self.opman:
                self.opman.join()
        except RuntimeError:
            pass
        close_client(self.primary_conn)
        self.repl_set.stop()

    def initOplogThread(self,
                        namespace_set=[],
                        ex_namespace_set=[],
                        dest_mapping={}):
        self.docman = CommandLoggerDocManager()
        # Replace the origin dest_mapping
        self.dest_mapping_stru = DestMapping(namespace_set, ex_namespace_set,
                                             dest_mapping)

        self.docman.command_helper = CommandHelper(self.dest_mapping_stru)
        self.opman = OplogThread(primary_client=self.primary_conn,
                                 doc_managers=(self.docman, ),
                                 oplog_progress_dict=self.oplog_progress,
                                 dest_mapping_stru=self.dest_mapping_stru,
                                 ns_set=namespace_set,
                                 ex_ns_set=ex_namespace_set,
                                 collection_dump=False)
        self.opman.start()

    def test_command_helper(self):

        mapping = {'a.x': 'b.x', 'a.y': 'c.y'}

        # Replace the origin dest_mapping
        dest_mapping_stru = DestMapping(list(mapping) + ['a.z'], [], mapping)

        helper = CommandHelper(dest_mapping_stru)

        self.assertEqual(set(helper.map_db('a')), set(['a', 'b', 'c']))
        self.assertEqual(helper.map_db('d'), [])

        self.assertEqual(helper.map_namespace('a.x'), 'b.x')
        self.assertEqual(helper.map_namespace('a.z'), 'a.z')
        self.assertEqual(helper.map_namespace('d.x'), None)

        self.assertEqual(helper.map_collection('a', 'x'), ('b', 'x'))
        self.assertEqual(helper.map_collection('a', 'z'), ('a', 'z'))
        self.assertEqual(helper.map_collection('d', 'x'), (None, None))

    def test_create_collection(self):
        self.initOplogThread()
        pymongo.collection.Collection(self.primary_conn['test'],
                                      'test',
                                      create=True)
        assert_soon(lambda: self.docman.commands)
        self.assertEqual(self.docman.commands[0], {'create': 'test'})

    def test_create_collection_skipped(self):
        self.initOplogThread(['test.test'])

        pymongo.collection.Collection(self.primary_conn['test2'],
                                      'test2',
                                      create=True)
        pymongo.collection.Collection(self.primary_conn['test'],
                                      'test',
                                      create=True)

        assert_soon(lambda: self.docman.commands)
        self.assertEqual(len(self.docman.commands), 1)
        self.assertEqual(self.docman.commands[0], {'create': 'test'})

    def test_drop_collection(self):
        self.initOplogThread()
        coll = pymongo.collection.Collection(self.primary_conn['test'],
                                             'test',
                                             create=True)
        coll.drop()
        assert_soon(lambda: len(self.docman.commands) == 2)
        self.assertEqual(self.docman.commands[1], {'drop': 'test'})

    def test_drop_database(self):
        self.initOplogThread()
        pymongo.collection.Collection(self.primary_conn['test'],
                                      'test',
                                      create=True)
        self.primary_conn.drop_database('test')
        assert_soon(lambda: len(self.docman.commands) == 2)
        self.assertEqual(self.docman.commands[1], {'dropDatabase': 1})

    def test_rename_collection(self):
        self.initOplogThread()
        coll = pymongo.collection.Collection(self.primary_conn['test'],
                                             'test',
                                             create=True)
        coll.rename('test2')
        assert_soon(lambda: len(self.docman.commands) == 2)
        self.assertEqual(self.docman.commands[1].get('renameCollection'),
                         'test.test')
        self.assertEqual(self.docman.commands[1].get('to'), 'test.test2')