58 lines
2.3 KiB
Python
58 lines
2.3 KiB
Python
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import unittest
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from shutil import rmtree
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from tempfile import mkdtemp
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from lbry.wallet.server.history import History
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from lbry.wallet.server.storage import LevelDB
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# dumped from a real history database. Aside from the state, all records are <hashX><flush_count>: <value>
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STATE_RECORD = (b'state\x00\x00', b"{'flush_count': 21497, 'comp_flush_count': -1, 'comp_cursor': -1, 'db_version': 0}")
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UNMIGRATED_RECORDS = {
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'00538b2cbe4a5f1be2dc320241': 'f5ed500142ee5001',
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'00538b48def1904014880501f2': 'b9a52a01baa52a01',
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'00538cdcf989b74de32c5100ca': 'c973870078748700',
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'00538d42d5df44603474284ae1': 'f5d9d802',
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'00538d42d5df44603474284ae2': '75dad802',
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'00538ebc879dac6ddbee9e0029': '3ca42f0042a42f00',
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'00538ed1d391327208748200bc': '804e7d00af4e7d00',
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'00538f3de41d9e33affa0300c2': '7de8810086e88100',
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'00539007f87792d98422c505a5': '8c5a7202445b7202',
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'0053902cf52ee9682d633b0575': 'eb0f64026c106402',
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'005390e05674571551632205a2': 'a13d7102e13d7102',
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'0053914ef25a9ceed927330584': '78096902960b6902',
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'005391768113f69548f37a01b1': 'a5b90b0114ba0b01',
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'005391a289812669e5b44c02c2': '33da8a016cdc8a01',
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}
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class TestHistoryDBMigration(unittest.TestCase):
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def test_migrate_flush_count_from_16_to_32_bits(self):
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self.history = History()
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tmpdir = mkdtemp()
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self.addCleanup(lambda: rmtree(tmpdir))
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LevelDB.import_module()
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db = LevelDB(tmpdir, 'hist', True)
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with db.write_batch() as batch:
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for key, value in UNMIGRATED_RECORDS.items():
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batch.put(bytes.fromhex(key), bytes.fromhex(value))
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batch.put(*STATE_RECORD)
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self.history.db = db
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self.history.read_state()
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self.assertEqual(21497, self.history.flush_count)
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self.assertEqual(0, self.history.db_version)
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self.assertTrue(self.history.needs_migration)
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self.history.migrate()
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self.assertFalse(self.history.needs_migration)
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self.assertEqual(1, self.history.db_version)
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for idx, (key, value) in enumerate(sorted(db.iterator())):
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if key == b'state\x00\x00':
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continue
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key, counter = key[:-4], key[-4:]
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expected_value = UNMIGRATED_RECORDS[key.hex() + counter.hex()[-4:]]
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self.assertEqual(value.hex(), expected_value)
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if __name__ == '__main__':
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unittest.main()
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