Add timestamp support to DBImplReadOnly (#10004)
Summary: This PR adds timestamp support to a read only DB instance opened as `DBImplReadOnly`. A follow up PR will add the same support to `CompactedDBImpl`. With this, read only database has these timestamp related APIs: `ReadOptions.timestamp` : read should return the latest data visible to this specified timestamp `Iterator::timestamp()` : returns the timestamp associated with the key, value `DB:Get(..., std::string* timestamp)` : returns the timestamp associated with the key, value in `timestamp` Test plan (on devserver): ``` $COMPILE_WITH_ASAN=1 make -j24 all $./db_with_timestamp_basic_test --gtest_filter=DBBasicTestWithTimestamp.ReadOnlyDB* ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/10004 Reviewed By: riversand963 Differential Revision: D36434422 Pulled By: jowlyzhang fbshipit-source-id: 5d949e65b1ffb845758000e2b310fdd4aae71cfbmain
Yu Zhang
3 years ago
committed by
Facebook GitHub Bot
parent
57997ddaaf
commit
16bdb1f999
@ -0,0 +1,331 @@ |
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include "db/db_with_timestamp_test_util.h" |
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#include "test_util/testutil.h" |
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namespace ROCKSDB_NAMESPACE { |
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class DBReadOnlyTestWithTimestamp : public DBBasicTestWithTimestampBase { |
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public: |
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DBReadOnlyTestWithTimestamp() |
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: DBBasicTestWithTimestampBase("db_readonly_test_with_timestamp") {} |
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}; |
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#ifndef ROCKSDB_LITE |
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TEST_F(DBReadOnlyTestWithTimestamp, IteratorAndGetReadTimestampSizeMismatch) { |
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const int kNumKeysPerFile = 128; |
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const uint64_t kMaxKey = 1024; |
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Options options = CurrentOptions(); |
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options.env = env_; |
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options.create_if_missing = true; |
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const size_t kTimestampSize = Timestamp(0, 0).size(); |
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TestComparator test_cmp(kTimestampSize); |
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options.comparator = &test_cmp; |
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options.memtable_factory.reset( |
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test::NewSpecialSkipListFactory(kNumKeysPerFile)); |
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DestroyAndReopen(options); |
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const std::string write_timestamp = Timestamp(1, 0); |
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WriteOptions write_opts; |
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for (uint64_t key = 0; key <= kMaxKey; ++key) { |
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Status s = db_->Put(write_opts, Key1(key), write_timestamp, |
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"value" + std::to_string(key)); |
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ASSERT_OK(s); |
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} |
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// Reopen the database in read only mode to test its timestamp support.
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Close(); |
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ASSERT_OK(ReadOnlyReopen(options)); |
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ReadOptions read_opts; |
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std::string different_size_read_timestamp; |
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PutFixed32(&different_size_read_timestamp, 2); |
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Slice different_size_read_ts = different_size_read_timestamp; |
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read_opts.timestamp = &different_size_read_ts; |
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{ |
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std::unique_ptr<Iterator> iter(db_->NewIterator(read_opts)); |
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ASSERT_FALSE(iter->Valid()); |
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ASSERT_TRUE(iter->status().IsInvalidArgument()); |
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} |
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for (uint64_t key = 0; key <= kMaxKey; ++key) { |
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std::string value_from_get; |
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std::string timestamp; |
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ASSERT_TRUE(db_->Get(read_opts, Key1(key), &value_from_get, ×tamp) |
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.IsInvalidArgument()); |
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} |
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Close(); |
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} |
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TEST_F(DBReadOnlyTestWithTimestamp, |
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IteratorAndGetReadTimestampSpecifiedWithoutWriteTimestamp) { |
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const int kNumKeysPerFile = 128; |
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const uint64_t kMaxKey = 1024; |
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Options options = CurrentOptions(); |
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options.env = env_; |
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options.create_if_missing = true; |
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options.memtable_factory.reset( |
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test::NewSpecialSkipListFactory(kNumKeysPerFile)); |
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DestroyAndReopen(options); |
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WriteOptions write_opts; |
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for (uint64_t key = 0; key <= kMaxKey; ++key) { |
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Status s = db_->Put(write_opts, Key1(key), "value" + std::to_string(key)); |
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ASSERT_OK(s); |
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} |
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// Reopen the database in read only mode to test its timestamp support.
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Close(); |
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ASSERT_OK(ReadOnlyReopen(options)); |
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ReadOptions read_opts; |
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const std::string read_timestamp = Timestamp(2, 0); |
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Slice read_ts = read_timestamp; |
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read_opts.timestamp = &read_ts; |
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{ |
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std::unique_ptr<Iterator> iter(db_->NewIterator(read_opts)); |
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ASSERT_FALSE(iter->Valid()); |
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ASSERT_TRUE(iter->status().IsInvalidArgument()); |
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} |
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for (uint64_t key = 0; key <= kMaxKey; ++key) { |
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std::string value_from_get; |
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std::string timestamp; |
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ASSERT_TRUE(db_->Get(read_opts, Key1(key), &value_from_get, ×tamp) |
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.IsInvalidArgument()); |
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} |
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Close(); |
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} |
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TEST_F(DBReadOnlyTestWithTimestamp, IteratorAndGet) { |
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const int kNumKeysPerFile = 128; |
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const uint64_t kMaxKey = 1024; |
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Options options = CurrentOptions(); |
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options.env = env_; |
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options.create_if_missing = true; |
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const size_t kTimestampSize = Timestamp(0, 0).size(); |
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TestComparator test_cmp(kTimestampSize); |
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options.comparator = &test_cmp; |
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options.memtable_factory.reset( |
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test::NewSpecialSkipListFactory(kNumKeysPerFile)); |
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DestroyAndReopen(options); |
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const std::vector<uint64_t> start_keys = {1, 0}; |
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const std::vector<std::string> write_timestamps = {Timestamp(1, 0), |
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Timestamp(3, 0)}; |
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const std::vector<std::string> read_timestamps = {Timestamp(2, 0), |
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Timestamp(4, 0)}; |
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for (size_t i = 0; i < write_timestamps.size(); ++i) { |
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WriteOptions write_opts; |
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for (uint64_t key = start_keys[i]; key <= kMaxKey; ++key) { |
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Status s = db_->Put(write_opts, Key1(key), write_timestamps[i], |
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"value" + std::to_string(i)); |
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ASSERT_OK(s); |
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} |
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} |
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// Reopen the database in read only mode to test its timestamp support.
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Close(); |
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ASSERT_OK(ReadOnlyReopen(options)); |
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auto get_value_and_check = [](DB* db, ReadOptions read_opts, Slice key, |
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Slice expected_value, std::string expected_ts) { |
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std::string value_from_get; |
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std::string timestamp; |
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ASSERT_OK(db->Get(read_opts, key.ToString(), &value_from_get, ×tamp)); |
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ASSERT_EQ(expected_value, value_from_get); |
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ASSERT_EQ(expected_ts, timestamp); |
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}; |
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for (size_t i = 0; i < read_timestamps.size(); ++i) { |
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ReadOptions read_opts; |
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Slice read_ts = read_timestamps[i]; |
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read_opts.timestamp = &read_ts; |
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std::unique_ptr<Iterator> it(db_->NewIterator(read_opts)); |
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int count = 0; |
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uint64_t key = 0; |
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// Forward iterate.
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for (it->Seek(Key1(0)), key = start_keys[i]; it->Valid(); |
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it->Next(), ++count, ++key) { |
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CheckIterUserEntry(it.get(), Key1(key), kTypeValue, |
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"value" + std::to_string(i), write_timestamps[i]); |
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get_value_and_check(db_, read_opts, it->key(), it->value(), |
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write_timestamps[i]); |
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} |
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size_t expected_count = kMaxKey - start_keys[i] + 1; |
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ASSERT_EQ(expected_count, count); |
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// Backward iterate.
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count = 0; |
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for (it->SeekForPrev(Key1(kMaxKey)), key = kMaxKey; it->Valid(); |
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it->Prev(), ++count, --key) { |
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CheckIterUserEntry(it.get(), Key1(key), kTypeValue, |
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"value" + std::to_string(i), write_timestamps[i]); |
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get_value_and_check(db_, read_opts, it->key(), it->value(), |
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write_timestamps[i]); |
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} |
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ASSERT_EQ(static_cast<size_t>(kMaxKey) - start_keys[i] + 1, count); |
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// SeekToFirst()/SeekToLast() with lower/upper bounds.
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// Then iter with lower and upper bounds.
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uint64_t l = 0; |
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uint64_t r = kMaxKey + 1; |
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while (l < r) { |
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std::string lb_str = Key1(l); |
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Slice lb = lb_str; |
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std::string ub_str = Key1(r); |
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Slice ub = ub_str; |
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read_opts.iterate_lower_bound = &lb; |
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read_opts.iterate_upper_bound = &ub; |
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it.reset(db_->NewIterator(read_opts)); |
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for (it->SeekToFirst(), key = std::max(l, start_keys[i]), count = 0; |
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it->Valid(); it->Next(), ++key, ++count) { |
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CheckIterUserEntry(it.get(), Key1(key), kTypeValue, |
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"value" + std::to_string(i), write_timestamps[i]); |
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get_value_and_check(db_, read_opts, it->key(), it->value(), |
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write_timestamps[i]); |
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} |
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ASSERT_EQ(r - std::max(l, start_keys[i]), count); |
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for (it->SeekToLast(), key = std::min(r, kMaxKey + 1), count = 0; |
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it->Valid(); it->Prev(), --key, ++count) { |
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CheckIterUserEntry(it.get(), Key1(key - 1), kTypeValue, |
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"value" + std::to_string(i), write_timestamps[i]); |
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get_value_and_check(db_, read_opts, it->key(), it->value(), |
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write_timestamps[i]); |
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} |
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l += (kMaxKey / 100); |
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r -= (kMaxKey / 100); |
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} |
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} |
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Close(); |
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} |
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TEST_F(DBReadOnlyTestWithTimestamp, Iterators) { |
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const int kNumKeysPerFile = 128; |
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const uint64_t kMaxKey = 1024; |
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Options options = CurrentOptions(); |
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options.env = env_; |
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options.create_if_missing = true; |
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const size_t kTimestampSize = Timestamp(0, 0).size(); |
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TestComparator test_cmp(kTimestampSize); |
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options.comparator = &test_cmp; |
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options.memtable_factory.reset( |
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test::NewSpecialSkipListFactory(kNumKeysPerFile)); |
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DestroyAndReopen(options); |
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const std::string write_timestamp = Timestamp(1, 0); |
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const std::string read_timestamp = Timestamp(2, 0); |
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WriteOptions write_opts; |
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for (uint64_t key = 0; key <= kMaxKey; ++key) { |
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Status s = db_->Put(write_opts, Key1(key), write_timestamp, |
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"value" + std::to_string(key)); |
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ASSERT_OK(s); |
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} |
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// Reopen the database in read only mode to test its timestamp support.
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Close(); |
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ASSERT_OK(ReadOnlyReopen(options)); |
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ReadOptions read_opts; |
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Slice read_ts = read_timestamp; |
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read_opts.timestamp = &read_ts; |
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std::vector<Iterator*> iters; |
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ASSERT_OK(db_->NewIterators(read_opts, {db_->DefaultColumnFamily()}, &iters)); |
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ASSERT_EQ(static_cast<uint64_t>(1), iters.size()); |
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int count = 0; |
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uint64_t key = 0; |
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// Forward iterate.
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for (iters[0]->Seek(Key1(0)), key = 0; iters[0]->Valid(); |
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iters[0]->Next(), ++count, ++key) { |
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CheckIterUserEntry(iters[0], Key1(key), kTypeValue, |
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"value" + std::to_string(key), write_timestamp); |
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} |
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size_t expected_count = kMaxKey - 0 + 1; |
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ASSERT_EQ(expected_count, count); |
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delete iters[0]; |
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Close(); |
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} |
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TEST_F(DBReadOnlyTestWithTimestamp, IteratorsReadTimestampSizeMismatch) { |
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const int kNumKeysPerFile = 128; |
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const uint64_t kMaxKey = 1024; |
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Options options = CurrentOptions(); |
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options.env = env_; |
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options.create_if_missing = true; |
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const size_t kTimestampSize = Timestamp(0, 0).size(); |
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TestComparator test_cmp(kTimestampSize); |
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options.comparator = &test_cmp; |
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options.memtable_factory.reset( |
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test::NewSpecialSkipListFactory(kNumKeysPerFile)); |
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DestroyAndReopen(options); |
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const std::string write_timestamp = Timestamp(1, 0); |
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WriteOptions write_opts; |
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for (uint64_t key = 0; key <= kMaxKey; ++key) { |
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Status s = db_->Put(write_opts, Key1(key), write_timestamp, |
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"value" + std::to_string(key)); |
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ASSERT_OK(s); |
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} |
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// Reopen the database in read only mode to test its timestamp support.
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Close(); |
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ASSERT_OK(ReadOnlyReopen(options)); |
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ReadOptions read_opts; |
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std::string different_size_read_timestamp; |
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PutFixed32(&different_size_read_timestamp, 2); |
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Slice different_size_read_ts = different_size_read_timestamp; |
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read_opts.timestamp = &different_size_read_ts; |
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{ |
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std::vector<Iterator*> iters; |
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ASSERT_TRUE( |
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db_->NewIterators(read_opts, {db_->DefaultColumnFamily()}, &iters) |
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.IsInvalidArgument()); |
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} |
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Close(); |
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} |
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TEST_F(DBReadOnlyTestWithTimestamp, |
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IteratorsReadTimestampSpecifiedWithoutWriteTimestamp) { |
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const int kNumKeysPerFile = 128; |
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const uint64_t kMaxKey = 1024; |
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Options options = CurrentOptions(); |
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options.env = env_; |
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options.create_if_missing = true; |
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options.memtable_factory.reset( |
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test::NewSpecialSkipListFactory(kNumKeysPerFile)); |
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DestroyAndReopen(options); |
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WriteOptions write_opts; |
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for (uint64_t key = 0; key <= kMaxKey; ++key) { |
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Status s = db_->Put(write_opts, Key1(key), "value" + std::to_string(key)); |
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ASSERT_OK(s); |
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} |
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// Reopen the database in read only mode to test its timestamp support.
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Close(); |
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ASSERT_OK(ReadOnlyReopen(options)); |
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ReadOptions read_opts; |
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const std::string read_timestamp = Timestamp(2, 0); |
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Slice read_ts = read_timestamp; |
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read_opts.timestamp = &read_ts; |
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{ |
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std::vector<Iterator*> iters; |
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ASSERT_TRUE( |
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db_->NewIterators(read_opts, {db_->DefaultColumnFamily()}, &iters) |
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.IsInvalidArgument()); |
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} |
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Close(); |
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} |
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#endif // !ROCKSDB_LITE
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} // namespace ROCKSDB_NAMESPACE
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int main(int argc, char** argv) { |
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ROCKSDB_NAMESPACE::port::InstallStackTraceHandler(); |
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::testing::InitGoogleTest(&argc, argv); |
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RegisterCustomObjects(argc, argv); |
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return RUN_ALL_TESTS(); |
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} |
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@ -0,0 +1,96 @@ |
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include "db/db_with_timestamp_test_util.h" |
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namespace ROCKSDB_NAMESPACE { |
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std::string DBBasicTestWithTimestampBase::Key1(uint64_t k) { |
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std::string ret; |
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PutFixed64(&ret, k); |
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std::reverse(ret.begin(), ret.end()); |
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return ret; |
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} |
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std::string DBBasicTestWithTimestampBase::KeyWithPrefix(std::string prefix, |
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uint64_t k) { |
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std::string ret; |
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PutFixed64(&ret, k); |
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std::reverse(ret.begin(), ret.end()); |
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return prefix + ret; |
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} |
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std::vector<Slice> DBBasicTestWithTimestampBase::ConvertStrToSlice( |
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std::vector<std::string>& strings) { |
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std::vector<Slice> ret; |
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for (const auto& s : strings) { |
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ret.emplace_back(s); |
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} |
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return ret; |
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} |
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std::string DBBasicTestWithTimestampBase::Timestamp(uint64_t low, |
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uint64_t high) { |
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std::string ts; |
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PutFixed64(&ts, low); |
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PutFixed64(&ts, high); |
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return ts; |
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} |
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void DBBasicTestWithTimestampBase::CheckIterUserEntry( |
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const Iterator* it, const Slice& expected_key, |
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ValueType expected_value_type, const Slice& expected_value, |
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const Slice& expected_ts) const { |
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ASSERT_TRUE(it->Valid()); |
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ASSERT_OK(it->status()); |
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ASSERT_EQ(expected_key, it->key()); |
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if (kTypeValue == expected_value_type) { |
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ASSERT_EQ(expected_value, it->value()); |
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} |
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ASSERT_EQ(expected_ts, it->timestamp()); |
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} |
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void DBBasicTestWithTimestampBase::CheckIterEntry( |
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const Iterator* it, const Slice& expected_ukey, SequenceNumber expected_seq, |
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ValueType expected_val_type, const Slice& expected_value, |
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const Slice& expected_ts) const { |
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ASSERT_TRUE(it->Valid()); |
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ASSERT_OK(it->status()); |
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std::string ukey_and_ts; |
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ukey_and_ts.assign(expected_ukey.data(), expected_ukey.size()); |
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ukey_and_ts.append(expected_ts.data(), expected_ts.size()); |
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ParsedInternalKey parsed_ikey; |
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ASSERT_OK(ParseInternalKey(it->key(), &parsed_ikey, true /* log_err_key */)); |
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ASSERT_EQ(ukey_and_ts, parsed_ikey.user_key); |
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ASSERT_EQ(expected_val_type, parsed_ikey.type); |
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ASSERT_EQ(expected_seq, parsed_ikey.sequence); |
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if (expected_val_type == kTypeValue) { |
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ASSERT_EQ(expected_value, it->value()); |
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} |
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ASSERT_EQ(expected_ts, it->timestamp()); |
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} |
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void DBBasicTestWithTimestampBase::CheckIterEntry( |
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const Iterator* it, const Slice& expected_ukey, ValueType expected_val_type, |
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const Slice& expected_value, const Slice& expected_ts) const { |
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ASSERT_TRUE(it->Valid()); |
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ASSERT_OK(it->status()); |
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std::string ukey_and_ts; |
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ukey_and_ts.assign(expected_ukey.data(), expected_ukey.size()); |
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ukey_and_ts.append(expected_ts.data(), expected_ts.size()); |
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ParsedInternalKey parsed_ikey; |
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ASSERT_OK(ParseInternalKey(it->key(), &parsed_ikey, true /* log_err_key */)); |
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ASSERT_EQ(expected_val_type, parsed_ikey.type); |
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ASSERT_EQ(Slice(ukey_and_ts), parsed_ikey.user_key); |
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if (expected_val_type == kTypeValue) { |
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ASSERT_EQ(expected_value, it->value()); |
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} |
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ASSERT_EQ(expected_ts, it->timestamp()); |
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} |
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} // namespace ROCKSDB_NAMESPACE
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@ -0,0 +1,126 @@ |
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
|
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// COPYING file in the root directory) and Apache 2.0 License
|
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// (found in the LICENSE.Apache file in the root directory).
|
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//
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
|
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#pragma once |
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#include "db/db_test_util.h" |
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#include "port/stack_trace.h" |
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#include "test_util/testutil.h" |
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namespace ROCKSDB_NAMESPACE { |
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class DBBasicTestWithTimestampBase : public DBTestBase { |
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public: |
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explicit DBBasicTestWithTimestampBase(const std::string& dbname) |
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: DBTestBase(dbname, /*env_do_fsync=*/true) {} |
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protected: |
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static std::string Key1(uint64_t k); |
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static std::string KeyWithPrefix(std::string prefix, uint64_t k); |
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static std::vector<Slice> ConvertStrToSlice( |
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std::vector<std::string>& strings); |
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|
||||
class TestComparator : public Comparator { |
||||
private: |
||||
const Comparator* cmp_without_ts_; |
||||
|
||||
public: |
||||
explicit TestComparator(size_t ts_sz) |
||||
: Comparator(ts_sz), cmp_without_ts_(nullptr) { |
||||
cmp_without_ts_ = BytewiseComparator(); |
||||
} |
||||
|
||||
const char* Name() const override { return "TestComparator"; } |
||||
|
||||
void FindShortSuccessor(std::string*) const override {} |
||||
|
||||
void FindShortestSeparator(std::string*, const Slice&) const override {} |
||||
|
||||
int Compare(const Slice& a, const Slice& b) const override { |
||||
int r = CompareWithoutTimestamp(a, b); |
||||
if (r != 0 || 0 == timestamp_size()) { |
||||
return r; |
||||
} |
||||
return -CompareTimestamp( |
||||
Slice(a.data() + a.size() - timestamp_size(), timestamp_size()), |
||||
Slice(b.data() + b.size() - timestamp_size(), timestamp_size())); |
||||
} |
||||
|
||||
using Comparator::CompareWithoutTimestamp; |
||||
int CompareWithoutTimestamp(const Slice& a, bool a_has_ts, const Slice& b, |
||||
bool b_has_ts) const override { |
||||
if (a_has_ts) { |
||||
assert(a.size() >= timestamp_size()); |
||||
} |
||||
if (b_has_ts) { |
||||
assert(b.size() >= timestamp_size()); |
||||
} |
||||
Slice lhs = a_has_ts ? StripTimestampFromUserKey(a, timestamp_size()) : a; |
||||
Slice rhs = b_has_ts ? StripTimestampFromUserKey(b, timestamp_size()) : b; |
||||
return cmp_without_ts_->Compare(lhs, rhs); |
||||
} |
||||
|
||||
int CompareTimestamp(const Slice& ts1, const Slice& ts2) const override { |
||||
if (!ts1.data() && !ts2.data()) { |
||||
return 0; |
||||
} else if (ts1.data() && !ts2.data()) { |
||||
return 1; |
||||
} else if (!ts1.data() && ts2.data()) { |
||||
return -1; |
||||
} |
||||
assert(ts1.size() == ts2.size()); |
||||
uint64_t low1 = 0; |
||||
uint64_t low2 = 0; |
||||
uint64_t high1 = 0; |
||||
uint64_t high2 = 0; |
||||
const size_t kSize = ts1.size(); |
||||
std::unique_ptr<char[]> ts1_buf(new char[kSize]); |
||||
memcpy(ts1_buf.get(), ts1.data(), ts1.size()); |
||||
std::unique_ptr<char[]> ts2_buf(new char[kSize]); |
||||
memcpy(ts2_buf.get(), ts2.data(), ts2.size()); |
||||
Slice ts1_copy = Slice(ts1_buf.get(), kSize); |
||||
Slice ts2_copy = Slice(ts2_buf.get(), kSize); |
||||
auto* ptr1 = const_cast<Slice*>(&ts1_copy); |
||||
auto* ptr2 = const_cast<Slice*>(&ts2_copy); |
||||
if (!GetFixed64(ptr1, &low1) || !GetFixed64(ptr1, &high1) || |
||||
!GetFixed64(ptr2, &low2) || !GetFixed64(ptr2, &high2)) { |
||||
assert(false); |
||||
} |
||||
if (high1 < high2) { |
||||
return -1; |
||||
} else if (high1 > high2) { |
||||
return 1; |
||||
} |
||||
if (low1 < low2) { |
||||
return -1; |
||||
} else if (low1 > low2) { |
||||
return 1; |
||||
} |
||||
return 0; |
||||
} |
||||
}; |
||||
|
||||
std::string Timestamp(uint64_t low, uint64_t high); |
||||
|
||||
void CheckIterUserEntry(const Iterator* it, const Slice& expected_key, |
||||
ValueType expected_value_type, |
||||
const Slice& expected_value, |
||||
const Slice& expected_ts) const; |
||||
|
||||
void CheckIterEntry(const Iterator* it, const Slice& expected_ukey, |
||||
SequenceNumber expected_seq, ValueType expected_val_type, |
||||
const Slice& expected_value, |
||||
const Slice& expected_ts) const; |
||||
|
||||
void CheckIterEntry(const Iterator* it, const Slice& expected_ukey, |
||||
ValueType expected_val_type, const Slice& expected_value, |
||||
const Slice& expected_ts) const; |
||||
}; |
||||
} // namespace ROCKSDB_NAMESPACE
|
||||
Loading…
Reference in new issue