76 lines
2.3 KiB
Python
76 lines
2.3 KiB
Python
# Copyright 2015 MongoDB, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Test PyMongo cursor with a sharded cluster."""
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from __future__ import annotations
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import unittest
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from queue import Queue
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from test import PyMongoTestCase
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import pytest
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try:
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from mockupdb import MockupDB, going
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_HAVE_MOCKUPDB = True
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except ImportError:
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_HAVE_MOCKUPDB = False
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from pymongo.common import MIN_SUPPORTED_WIRE_VERSION
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pytestmark = pytest.mark.mockupdb
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class TestGetmoreSharded(PyMongoTestCase):
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def test_getmore_sharded(self):
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servers = [MockupDB(), MockupDB()]
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# Collect queries to either server in one queue.
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q: Queue = Queue()
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for server in servers:
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server.subscribe(q.put)
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server.autoresponds(
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"ismaster",
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ismaster=True,
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msg="isdbgrid",
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minWireVersion=2,
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maxWireVersion=MIN_SUPPORTED_WIRE_VERSION,
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)
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server.run()
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self.addCleanup(server.stop)
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client = self.simple_client(
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"mongodb://%s:%d,%s:%d"
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% (servers[0].host, servers[0].port, servers[1].host, servers[1].port)
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)
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collection = client.db.collection
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cursor = collection.find()
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with going(next, cursor):
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query = q.get(timeout=1)
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query.replies({"cursor": {"id": 123, "firstBatch": [{}]}})
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# 10 batches, all getMores go to same server.
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for i in range(1, 10):
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with going(next, cursor):
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getmore = q.get(timeout=1)
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self.assertEqual(query.server, getmore.server)
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cursor_id = 123 if i < 9 else 0
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getmore.replies({"cursor": {"id": cursor_id, "nextBatch": [{}]}})
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if __name__ == "__main__":
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unittest.main()
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