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import unittest
import sys
import rocksdb
class TestFilterPolicy(rocksdb.interfaces.FilterPolicy):
def create_filter(self, keys):
return b'nix'
def key_may_match(self, key, fil):
return True
def name(self):
return b'testfilter'
class TestMergeOperator(rocksdb.interfaces.MergeOperator):
def full_merge(self, *args, **kwargs):
return (False, None)
def partial_merge(self, *args, **kwargs):
return (False, None)
def name(self):
return b'testmergeop'
class TestOptions(unittest.TestCase):
# def test_default_merge_operator(self):
# opts = rocksdb.Options()
# self.assertEqual(True, opts.paranoid_checks)
# opts.paranoid_checks = False
# self.assertEqual(False, opts.paranoid_checks)
# self.assertIsNone(opts.merge_operator)
# opts.merge_operator = "uint64add"
# self.assertIsNotNone(opts.merge_operator)
# self.assertEqual(opts.merge_operator, "uint64add")
# with self.assertRaises(TypeError):
# opts.merge_operator = "not an operator"
# FIXME: travis test should include the latest version of rocksdb
# def test_compaction_pri(self):
# opts = rocksdb.Options()
# default compaction_pri
# self.assertEqual(opts.compaction_pri, rocksdb.CompactionPri.by_compensated_size)
# self.assertEqual(opts.compaction_pri, rocksdb.CompactionPri.min_overlapping_ratio)
# opts.compaction_pri = rocksdb.CompactionPri.by_compensated_size
# self.assertEqual(opts.compaction_pri, rocksdb.CompactionPri.by_compensated_size)
# opts.compaction_pri = rocksdb.CompactionPri.oldest_largest_seq_first
# self.assertEqual(opts.compaction_pri, rocksdb.CompactionPri.oldest_largest_seq_first)
# opts.compaction_pri = rocksdb.CompactionPri.min_overlapping_ratio
# self.assertEqual(opts.compaction_pri, rocksdb.CompactionPri.min_overlapping_ratio)
def test_enable_write_thread_adaptive_yield(self):
opts = rocksdb.Options()
self.assertEqual(opts.enable_write_thread_adaptive_yield, True)
opts.enable_write_thread_adaptive_yield = False
self.assertEqual(opts.enable_write_thread_adaptive_yield, False)
def test_allow_concurrent_memtable_write(self):
opts = rocksdb.Options()
self.assertEqual(opts.allow_concurrent_memtable_write, True)
opts.allow_concurrent_memtable_write = False
self.assertEqual(opts.allow_concurrent_memtable_write, False)
def test_compression_opts(self):
opts = rocksdb.Options()
compression_opts = opts.compression_opts
# default value
self.assertEqual(isinstance(compression_opts, dict), True)
self.assertEqual(compression_opts['window_bits'], -14)
# This doesn't match rocksdb latest
# self.assertEqual(compression_opts['level'], -1)
self.assertEqual(compression_opts['strategy'], 0)
self.assertEqual(compression_opts['max_dict_bytes'], 0)
with self.assertRaises(TypeError):
opts.compression_opts = list(1,2)
opts.compression_opts = {'window_bits': 1, 'level': 2, 'strategy': 3, 'max_dict_bytes': 4}
compression_opts = opts.compression_opts
self.assertEqual(compression_opts['window_bits'], 1)
self.assertEqual(compression_opts['level'], 2)
self.assertEqual(compression_opts['strategy'], 3)
self.assertEqual(compression_opts['max_dict_bytes'], 4)
def test_simple(self):
opts = rocksdb.Options()
self.assertEqual(True, opts.paranoid_checks)
opts.paranoid_checks = False
self.assertEqual(False, opts.paranoid_checks)
self.assertIsNone(opts.merge_operator)
ob = TestMergeOperator()
opts.merge_operator = ob
self.assertEqual(opts.merge_operator, ob)
self.assertIsInstance(
opts.comparator,
rocksdb.BytewiseComparator)
self.assertIn(opts.compression,
(rocksdb.CompressionType.no_compression,
rocksdb.CompressionType.snappy_compression))
opts.compression = rocksdb.CompressionType.zstd_compression
self.assertEqual(rocksdb.CompressionType.zstd_compression, opts.compression)
def test_block_options(self):
rocksdb.BlockBasedTableFactory(
block_size=4096,
filter_policy=TestFilterPolicy(),
block_cache=rocksdb.LRUCache(100))
def test_unicode_path(self):
name = b'/tmp/M\xc3\xbcnchen'.decode('utf8')
opts = rocksdb.Options()
opts.db_log_dir = name
opts.wal_dir = name
self.assertEqual(name, opts.db_log_dir)
self.assertEqual(name, opts.wal_dir)
def test_table_factory(self):
opts = rocksdb.Options()
self.assertIsNone(opts.table_factory)
opts.table_factory = rocksdb.BlockBasedTableFactory()
opts.table_factory = rocksdb.PlainTableFactory()
def test_compaction_style(self):
opts = rocksdb.Options()
self.assertEqual('level', opts.compaction_style)
opts.compaction_style = 'universal'
self.assertEqual('universal', opts.compaction_style)
opts.compaction_style = 'level'
self.assertEqual('level', opts.compaction_style)
if sys.version_info[0] == 3:
assertRaisesRegex = self.assertRaisesRegex
else:
assertRaisesRegex = self.assertRaisesRegexp
with assertRaisesRegex(Exception, 'Unknown compaction style'):
opts.compaction_style = 'foo'
def test_compaction_opts_universal(self):
opts = rocksdb.Options()
uopts = opts.compaction_options_universal
self.assertEqual(-1, uopts['compression_size_percent'])
self.assertEqual(200, uopts['max_size_amplification_percent'])
self.assertEqual('total_size', uopts['stop_style'])
self.assertEqual(1, uopts['size_ratio'])
self.assertEqual(2, uopts['min_merge_width'])
self.assertGreaterEqual(4294967295, uopts['max_merge_width'])
new_opts = {'stop_style': 'similar_size', 'max_merge_width': 30}
opts.compaction_options_universal = new_opts
uopts = opts.compaction_options_universal
self.assertEqual(-1, uopts['compression_size_percent'])
self.assertEqual(200, uopts['max_size_amplification_percent'])
self.assertEqual('similar_size', uopts['stop_style'])
self.assertEqual(1, uopts['size_ratio'])
self.assertEqual(2, uopts['min_merge_width'])
self.assertEqual(30, uopts['max_merge_width'])
def test_row_cache(self):
opts = rocksdb.Options()
self.assertIsNone(opts.row_cache)
opts.row_cache = cache = rocksdb.LRUCache(2*1024*1024)
self.assertEqual(cache, opts.row_cache)
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