#!/usr/bin/env python # # Public Domain 2014-2017 MongoDB, Inc. # Public Domain 2008-2014 WiredTiger, Inc. # # This is free and unencumbered software released into the public domain. # # Anyone is free to copy, modify, publish, use, compile, sell, or # distribute this software, either in source code form or as a compiled # binary, for any purpose, commercial or non-commercial, and by any # means. # # In jurisdictions that recognize copyright laws, the author or authors # of this software dedicate any and all copyright interest in the # software to the public domain. We make this dedication for the benefit # of the public at large and to the detriment of our heirs and # successors. We intend this dedication to be an overt act of # relinquishment in perpetuity of all present and future rights to this # software under copyright law. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. # IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, # ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR # OTHER DEALINGS IN THE SOFTWARE. # # test_reserve.py # Reserve update tests. import wiredtiger, wttest from wtdataset import SimpleDataSet, SimpleIndexDataSet from wtdataset import SimpleLSMDataSet, ComplexDataSet, ComplexLSMDataSet from wtscenario import make_scenarios # Test WT_CURSOR.reserve. class test_reserve(wttest.WiredTigerTestCase): keyfmt = [ ('integer', dict(keyfmt='i')), ('recno', dict(keyfmt='r')), ('string', dict(keyfmt='S')), ] types = [ ('file', dict(uri='file', ds=SimpleDataSet)), ('lsm', dict(uri='lsm', ds=SimpleDataSet)), ('table-complex', dict(uri='table', ds=ComplexDataSet)), ('table-complex-lsm', dict(uri='table', ds=ComplexLSMDataSet)), ('table-index', dict(uri='table', ds=SimpleIndexDataSet)), ('table-simple', dict(uri='table', ds=SimpleDataSet)), ('table-simple-lsm', dict(uri='table', ds=SimpleLSMDataSet)), ] scenarios = make_scenarios(types, keyfmt) def skip(self): return self.keyfmt == 'r' and \ (self.ds.is_lsm() or self.uri == 'lsm') def test_reserve(self): if self.skip(): return uri = self.uri + ':test_reserve' ds = self.ds(self, uri, 500, key_format=self.keyfmt) ds.populate() s = self.conn.open_session() c = s.open_cursor(uri, None) # Repeatedly update a record. for i in range(1, 5): s.begin_transaction('isolation=snapshot') c.set_key(ds.key(100)) c.set_value(ds.value(100)) self.assertEquals(c.update(), 0) s.commit_transaction() # Confirm reserve fails if the record doesn't exist. s.begin_transaction('isolation=snapshot') c.set_key(ds.key(600)) self.assertRaises(wiredtiger.WiredTigerError, lambda:c.reserve()) s.rollback_transaction() # Repeatedly reserve a record and commit. for i in range(1, 5): s.begin_transaction('isolation=snapshot') c.set_key(ds.key(100)) self.assertEquals(c.reserve(), 0) s.commit_transaction() # Repeatedly reserve a record and rollback. for i in range(1, 5): s.begin_transaction('isolation=snapshot') c.set_key(ds.key(100)) self.assertEquals(c.reserve(), 0) s.rollback_transaction() # Repeatedly reserve, then update, a record, and commit. for i in range(1, 5): s.begin_transaction('isolation=snapshot') c.set_key(ds.key(100)) self.assertEquals(c.reserve(), 0) c.set_value(ds.value(100)) self.assertEquals(c.update(), 0) s.commit_transaction() # Repeatedly reserve, then update, a record, and rollback. for i in range(1, 5): s.begin_transaction('isolation=snapshot') c.set_key(ds.key(100)) self.assertEquals(c.reserve(), 0) c.set_value(ds.value(100)) self.assertEquals(c.update(), 0) s.commit_transaction() # Reserve a slot, repeatedly try and update a record from another # transaction (which should fail), repeatedly update a record and # commit. s2 = self.conn.open_session() c2 = s2.open_cursor(uri, None) for i in range(1, 2): s.begin_transaction('isolation=snapshot') c.set_key(ds.key(100)) self.assertEquals(c.reserve(), 0) s2.begin_transaction('isolation=snapshot') c2.set_key(ds.key(100)) c2.set_value(ds.value(100)) self.assertRaises(wiredtiger.WiredTigerError, lambda:c2.update()) s2.rollback_transaction() c.set_key(ds.key(100)) c.set_value(ds.value(100)) self.assertEquals(c.update(), 0) s.commit_transaction() # Test cursor.reserve will fail if a key has not yet been set. def test_reserve_without_key(self): if self.skip(): return uri = self.uri + ':test_reserve_without_key' ds = self.ds(self, uri, 10, key_format=self.keyfmt) ds.populate() s = self.conn.open_session() c = s.open_cursor(uri, None) s.begin_transaction('isolation=snapshot') msg = "/requires key be set/" self.assertRaisesWithMessage( wiredtiger.WiredTigerError, lambda:c.reserve(), msg) # Test cursor.reserve will fail if there's no running transaction. def test_reserve_without_txn(self): if self.skip(): return uri = self.uri + ':test_reserve_without_txn' ds = self.ds(self, uri, 10, key_format=self.keyfmt) ds.populate() s = self.conn.open_session() c = s.open_cursor(uri, None) c.set_key(ds.key(5)) msg = "/only permitted in a running transaction/" self.assertRaisesWithMessage( wiredtiger.WiredTigerError, lambda:c.reserve(), msg) # Test cursor.reserve returns a value on success. def test_reserve_returns_value(self): if self.skip(): return uri = self.uri + ':test_reserve_returns_value' ds = self.ds(self, uri, 10, key_format=self.keyfmt) ds.populate() s = self.conn.open_session() c = s.open_cursor(uri, None) s.begin_transaction('isolation=snapshot') c.set_key(ds.key(5)) self.assertEquals(c.reserve(), 0) self.assertEqual(c.get_value(), ds.comparable_value(5)) # Test cursor.reserve fails on non-standard cursors. def test_reserve_not_supported(self): if self.skip(): return uri = self.uri + ':test_reserve_not_supported' s = self.conn.open_session() s.create(uri, 'key_format=' + self.keyfmt + ",value_format=S") list = [ "bulk", "dump=json" ] for l in list: c = s.open_cursor(uri, None, l) msg = "/Operation not supported/" self.assertRaisesWithMessage(wiredtiger.WiredTigerError, lambda:self.assertEquals(c.reserve(), 0), msg) c.close() list = [ "backup:", "config:" "log:" "metadata:" "statistics:" ] for l in list: c = s.open_cursor(l, None, None) msg = "/Operation not supported/" self.assertRaisesWithMessage(wiredtiger.WiredTigerError, lambda:self.assertEquals(c.reserve(), 0), msg) if __name__ == '__main__': wttest.run()