fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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790 lines
26 KiB
790 lines
26 KiB
// 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 "test_util/testutil.h"
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <array>
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#include <cctype>
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#include <fstream>
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#include <sstream>
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#include "db/memtable_list.h"
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#include "env/composite_env_wrapper.h"
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#include "file/random_access_file_reader.h"
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#include "file/sequence_file_reader.h"
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#include "file/writable_file_writer.h"
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#include "port/port.h"
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#include "rocksdb/convenience.h"
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#include "rocksdb/system_clock.h"
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#include "rocksdb/utilities/object_registry.h"
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#include "test_util/mock_time_env.h"
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#include "test_util/sync_point.h"
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#include "util/random.h"
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#ifndef ROCKSDB_UNITTESTS_WITH_CUSTOM_OBJECTS_FROM_STATIC_LIBS
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void RegisterCustomObjects(int /*argc*/, char** /*argv*/) {}
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#endif
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namespace ROCKSDB_NAMESPACE {
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namespace test {
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const uint32_t kDefaultFormatVersion = BlockBasedTableOptions().format_version;
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const std::set<uint32_t> kFooterFormatVersionsToTest{
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5U,
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// In case any interesting future changes
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kDefaultFormatVersion,
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kLatestFormatVersion,
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};
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std::string RandomKey(Random* rnd, int len, RandomKeyType type) {
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// Make sure to generate a wide variety of characters so we
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// test the boundary conditions for short-key optimizations.
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static const char kTestChars[] = {'\0', '\1', 'a', 'b', 'c',
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'd', 'e', '\xfd', '\xfe', '\xff'};
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std::string result;
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for (int i = 0; i < len; i++) {
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std::size_t indx = 0;
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switch (type) {
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case RandomKeyType::RANDOM:
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indx = rnd->Uniform(sizeof(kTestChars));
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break;
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case RandomKeyType::LARGEST:
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indx = sizeof(kTestChars) - 1;
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break;
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case RandomKeyType::MIDDLE:
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indx = sizeof(kTestChars) / 2;
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break;
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case RandomKeyType::SMALLEST:
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indx = 0;
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break;
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}
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result += kTestChars[indx];
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}
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return result;
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}
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extern Slice CompressibleString(Random* rnd, double compressed_fraction,
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int len, std::string* dst) {
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int raw = static_cast<int>(len * compressed_fraction);
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if (raw < 1) raw = 1;
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std::string raw_data = rnd->RandomString(raw);
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// Duplicate the random data until we have filled "len" bytes
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dst->clear();
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while (dst->size() < (unsigned int)len) {
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dst->append(raw_data);
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}
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dst->resize(len);
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return Slice(*dst);
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}
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namespace {
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class Uint64ComparatorImpl : public Comparator {
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public:
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Uint64ComparatorImpl() {}
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const char* Name() const override { return "rocksdb.Uint64Comparator"; }
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int Compare(const Slice& a, const Slice& b) const override {
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assert(a.size() == sizeof(uint64_t) && b.size() == sizeof(uint64_t));
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const uint64_t* left = reinterpret_cast<const uint64_t*>(a.data());
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const uint64_t* right = reinterpret_cast<const uint64_t*>(b.data());
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uint64_t leftValue;
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uint64_t rightValue;
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GetUnaligned(left, &leftValue);
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GetUnaligned(right, &rightValue);
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if (leftValue == rightValue) {
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return 0;
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} else if (leftValue < rightValue) {
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return -1;
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} else {
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return 1;
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}
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}
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void FindShortestSeparator(std::string* /*start*/,
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const Slice& /*limit*/) const override {
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return;
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}
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void FindShortSuccessor(std::string* /*key*/) const override { return; }
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};
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// A test implementation of comparator with 64-bit integer timestamp.
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class ComparatorWithU64TsImpl : public Comparator {
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public:
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ComparatorWithU64TsImpl()
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: Comparator(/*ts_sz=*/sizeof(uint64_t)),
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cmp_without_ts_(BytewiseComparator()) {
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assert(cmp_without_ts_);
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assert(cmp_without_ts_->timestamp_size() == 0);
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}
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const char* Name() const override { return "ComparatorWithU64Ts"; }
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void FindShortSuccessor(std::string*) const override {}
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void FindShortestSeparator(std::string*, const Slice&) const override {}
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int Compare(const Slice& a, const Slice& b) const override {
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int ret = CompareWithoutTimestamp(a, b);
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size_t ts_sz = timestamp_size();
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if (ret != 0) {
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return ret;
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}
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// Compare timestamp.
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// For the same user key with different timestamps, larger (newer) timestamp
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// comes first.
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return -CompareTimestamp(ExtractTimestampFromUserKey(a, ts_sz),
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ExtractTimestampFromUserKey(b, ts_sz));
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}
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using Comparator::CompareWithoutTimestamp;
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int CompareWithoutTimestamp(const Slice& a, bool a_has_ts, const Slice& b,
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bool b_has_ts) const override {
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const size_t ts_sz = timestamp_size();
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assert(!a_has_ts || a.size() >= ts_sz);
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assert(!b_has_ts || b.size() >= ts_sz);
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Slice lhs = a_has_ts ? StripTimestampFromUserKey(a, ts_sz) : a;
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Slice rhs = b_has_ts ? StripTimestampFromUserKey(b, ts_sz) : b;
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return cmp_without_ts_->Compare(lhs, rhs);
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}
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int CompareTimestamp(const Slice& ts1, const Slice& ts2) const override {
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assert(ts1.size() == sizeof(uint64_t));
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assert(ts2.size() == sizeof(uint64_t));
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uint64_t lhs = DecodeFixed64(ts1.data());
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uint64_t rhs = DecodeFixed64(ts2.data());
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if (lhs < rhs) {
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return -1;
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} else if (lhs > rhs) {
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return 1;
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} else {
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return 0;
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}
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}
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private:
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const Comparator* cmp_without_ts_{nullptr};
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};
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} // namespace
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const Comparator* Uint64Comparator() {
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static Uint64ComparatorImpl uint64comp;
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return &uint64comp;
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}
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const Comparator* ComparatorWithU64Ts() {
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static ComparatorWithU64TsImpl comp_with_u64_ts;
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return &comp_with_u64_ts;
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}
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void CorruptKeyType(InternalKey* ikey) {
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std::string keystr = ikey->Encode().ToString();
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keystr[keystr.size() - 8] = kTypeLogData;
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ikey->DecodeFrom(Slice(keystr.data(), keystr.size()));
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}
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std::string KeyStr(const std::string& user_key, const SequenceNumber& seq,
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const ValueType& t, bool corrupt) {
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InternalKey k(user_key, seq, t);
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if (corrupt) {
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CorruptKeyType(&k);
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}
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return k.Encode().ToString();
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}
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std::string KeyStr(uint64_t ts, const std::string& user_key,
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const SequenceNumber& seq, const ValueType& t,
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bool corrupt) {
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std::string user_key_with_ts(user_key);
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std::string ts_str;
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PutFixed64(&ts_str, ts);
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user_key_with_ts.append(ts_str);
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return KeyStr(user_key_with_ts, seq, t, corrupt);
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}
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bool SleepingBackgroundTask::TimedWaitUntilSleeping(uint64_t wait_time) {
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auto abs_time = SystemClock::Default()->NowMicros() + wait_time;
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MutexLock l(&mutex_);
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while (!sleeping_ || !should_sleep_) {
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if (bg_cv_.TimedWait(abs_time)) {
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return true;
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}
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}
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return false;
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}
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bool SleepingBackgroundTask::TimedWaitUntilDone(uint64_t wait_time) {
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auto abs_time = SystemClock::Default()->NowMicros() + wait_time;
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MutexLock l(&mutex_);
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while (!done_with_sleep_) {
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if (bg_cv_.TimedWait(abs_time)) {
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return true;
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}
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}
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return false;
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}
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std::string RandomName(Random* rnd, const size_t len) {
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std::stringstream ss;
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for (size_t i = 0; i < len; ++i) {
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ss << static_cast<char>(rnd->Uniform(26) + 'a');
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}
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return ss.str();
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}
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CompressionType RandomCompressionType(Random* rnd) {
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auto ret = static_cast<CompressionType>(rnd->Uniform(6));
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while (!CompressionTypeSupported(ret)) {
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ret = static_cast<CompressionType>((static_cast<int>(ret) + 1) % 6);
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}
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return ret;
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}
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void RandomCompressionTypeVector(const size_t count,
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std::vector<CompressionType>* types,
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Random* rnd) {
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types->clear();
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for (size_t i = 0; i < count; ++i) {
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types->emplace_back(RandomCompressionType(rnd));
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}
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}
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const SliceTransform* RandomSliceTransform(Random* rnd, int pre_defined) {
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int random_num = pre_defined >= 0 ? pre_defined : rnd->Uniform(4);
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switch (random_num) {
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case 0:
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return NewFixedPrefixTransform(rnd->Uniform(20) + 1);
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case 1:
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return NewCappedPrefixTransform(rnd->Uniform(20) + 1);
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case 2:
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return NewNoopTransform();
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default:
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return nullptr;
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}
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}
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BlockBasedTableOptions RandomBlockBasedTableOptions(Random* rnd) {
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BlockBasedTableOptions opt;
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opt.cache_index_and_filter_blocks = rnd->Uniform(2);
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opt.pin_l0_filter_and_index_blocks_in_cache = rnd->Uniform(2);
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opt.pin_top_level_index_and_filter = rnd->Uniform(2);
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using IndexType = BlockBasedTableOptions::IndexType;
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const std::array<IndexType, 4> index_types = {
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{IndexType::kBinarySearch, IndexType::kHashSearch,
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IndexType::kTwoLevelIndexSearch, IndexType::kBinarySearchWithFirstKey}};
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opt.index_type =
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index_types[rnd->Uniform(static_cast<int>(index_types.size()))];
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opt.hash_index_allow_collision = rnd->Uniform(2);
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opt.checksum = static_cast<ChecksumType>(rnd->Uniform(3));
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opt.block_size = rnd->Uniform(10000000);
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opt.block_size_deviation = rnd->Uniform(100);
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opt.block_restart_interval = rnd->Uniform(100);
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opt.index_block_restart_interval = rnd->Uniform(100);
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opt.whole_key_filtering = rnd->Uniform(2);
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return opt;
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}
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TableFactory* RandomTableFactory(Random* rnd, int pre_defined) {
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#ifndef ROCKSDB_LITE
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int random_num = pre_defined >= 0 ? pre_defined : rnd->Uniform(4);
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switch (random_num) {
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case 0:
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return NewPlainTableFactory();
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case 1:
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return NewCuckooTableFactory();
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default:
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return NewBlockBasedTableFactory();
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}
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#else
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(void)rnd;
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(void)pre_defined;
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return NewBlockBasedTableFactory();
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#endif // !ROCKSDB_LITE
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}
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MergeOperator* RandomMergeOperator(Random* rnd) {
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return new ChanglingMergeOperator(RandomName(rnd, 10));
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}
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CompactionFilter* RandomCompactionFilter(Random* rnd) {
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return new ChanglingCompactionFilter(RandomName(rnd, 10));
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}
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CompactionFilterFactory* RandomCompactionFilterFactory(Random* rnd) {
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return new ChanglingCompactionFilterFactory(RandomName(rnd, 10));
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}
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void RandomInitDBOptions(DBOptions* db_opt, Random* rnd) {
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// boolean options
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db_opt->advise_random_on_open = rnd->Uniform(2);
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db_opt->allow_mmap_reads = rnd->Uniform(2);
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db_opt->allow_mmap_writes = rnd->Uniform(2);
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db_opt->use_direct_reads = rnd->Uniform(2);
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db_opt->use_direct_io_for_flush_and_compaction = rnd->Uniform(2);
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db_opt->create_if_missing = rnd->Uniform(2);
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db_opt->create_missing_column_families = rnd->Uniform(2);
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db_opt->enable_thread_tracking = rnd->Uniform(2);
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db_opt->error_if_exists = rnd->Uniform(2);
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db_opt->is_fd_close_on_exec = rnd->Uniform(2);
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db_opt->paranoid_checks = rnd->Uniform(2);
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db_opt->track_and_verify_wals_in_manifest = rnd->Uniform(2);
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db_opt->skip_stats_update_on_db_open = rnd->Uniform(2);
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db_opt->skip_checking_sst_file_sizes_on_db_open = rnd->Uniform(2);
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db_opt->use_adaptive_mutex = rnd->Uniform(2);
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db_opt->use_fsync = rnd->Uniform(2);
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db_opt->recycle_log_file_num = rnd->Uniform(2);
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db_opt->avoid_flush_during_recovery = rnd->Uniform(2);
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db_opt->avoid_flush_during_shutdown = rnd->Uniform(2);
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// int options
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db_opt->max_background_compactions = rnd->Uniform(100);
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db_opt->max_background_flushes = rnd->Uniform(100);
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db_opt->max_file_opening_threads = rnd->Uniform(100);
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db_opt->max_open_files = rnd->Uniform(100);
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db_opt->table_cache_numshardbits = rnd->Uniform(100);
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// size_t options
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db_opt->db_write_buffer_size = rnd->Uniform(10000);
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db_opt->keep_log_file_num = rnd->Uniform(10000);
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db_opt->log_file_time_to_roll = rnd->Uniform(10000);
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db_opt->manifest_preallocation_size = rnd->Uniform(10000);
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db_opt->max_log_file_size = rnd->Uniform(10000);
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// std::string options
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db_opt->db_log_dir = "path/to/db_log_dir";
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db_opt->wal_dir = "path/to/wal_dir";
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// uint32_t options
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db_opt->max_subcompactions = rnd->Uniform(100000);
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// uint64_t options
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static const uint64_t uint_max = static_cast<uint64_t>(UINT_MAX);
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db_opt->WAL_size_limit_MB = uint_max + rnd->Uniform(100000);
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db_opt->WAL_ttl_seconds = uint_max + rnd->Uniform(100000);
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db_opt->bytes_per_sync = uint_max + rnd->Uniform(100000);
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db_opt->delayed_write_rate = uint_max + rnd->Uniform(100000);
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db_opt->delete_obsolete_files_period_micros = uint_max + rnd->Uniform(100000);
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db_opt->max_manifest_file_size = uint_max + rnd->Uniform(100000);
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db_opt->max_total_wal_size = uint_max + rnd->Uniform(100000);
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db_opt->wal_bytes_per_sync = uint_max + rnd->Uniform(100000);
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// unsigned int options
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db_opt->stats_dump_period_sec = rnd->Uniform(100000);
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}
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void RandomInitCFOptions(ColumnFamilyOptions* cf_opt, DBOptions& db_options,
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Random* rnd) {
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cf_opt->compaction_style = (CompactionStyle)(rnd->Uniform(4));
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// boolean options
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cf_opt->report_bg_io_stats = rnd->Uniform(2);
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cf_opt->disable_auto_compactions = rnd->Uniform(2);
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cf_opt->inplace_update_support = rnd->Uniform(2);
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cf_opt->level_compaction_dynamic_level_bytes = rnd->Uniform(2);
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cf_opt->optimize_filters_for_hits = rnd->Uniform(2);
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cf_opt->paranoid_file_checks = rnd->Uniform(2);
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cf_opt->force_consistency_checks = rnd->Uniform(2);
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cf_opt->compaction_options_fifo.allow_compaction = rnd->Uniform(2);
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cf_opt->memtable_whole_key_filtering = rnd->Uniform(2);
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cf_opt->enable_blob_files = rnd->Uniform(2);
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cf_opt->enable_blob_garbage_collection = rnd->Uniform(2);
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// double options
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cf_opt->memtable_prefix_bloom_size_ratio =
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static_cast<double>(rnd->Uniform(10000)) / 20000.0;
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cf_opt->blob_garbage_collection_age_cutoff = rnd->Uniform(10000) / 10000.0;
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cf_opt->blob_garbage_collection_force_threshold =
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rnd->Uniform(10000) / 10000.0;
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// int options
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cf_opt->level0_file_num_compaction_trigger = rnd->Uniform(100);
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cf_opt->level0_slowdown_writes_trigger = rnd->Uniform(100);
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cf_opt->level0_stop_writes_trigger = rnd->Uniform(100);
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cf_opt->max_bytes_for_level_multiplier = rnd->Uniform(100);
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cf_opt->max_mem_compaction_level = rnd->Uniform(100);
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cf_opt->max_write_buffer_number = rnd->Uniform(100);
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cf_opt->max_write_buffer_number_to_maintain = rnd->Uniform(100);
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cf_opt->max_write_buffer_size_to_maintain = rnd->Uniform(10000);
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cf_opt->min_write_buffer_number_to_merge = rnd->Uniform(100);
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cf_opt->num_levels = rnd->Uniform(100);
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cf_opt->target_file_size_multiplier = rnd->Uniform(100);
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// vector int options
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cf_opt->max_bytes_for_level_multiplier_additional.resize(cf_opt->num_levels);
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for (int i = 0; i < cf_opt->num_levels; i++) {
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cf_opt->max_bytes_for_level_multiplier_additional[i] = rnd->Uniform(100);
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}
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// size_t options
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cf_opt->arena_block_size = rnd->Uniform(10000);
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cf_opt->inplace_update_num_locks = rnd->Uniform(10000);
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cf_opt->max_successive_merges = rnd->Uniform(10000);
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cf_opt->memtable_huge_page_size = rnd->Uniform(10000);
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cf_opt->write_buffer_size = rnd->Uniform(10000);
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// uint32_t options
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cf_opt->bloom_locality = rnd->Uniform(10000);
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cf_opt->max_bytes_for_level_base = rnd->Uniform(10000);
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// uint64_t options
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static const uint64_t uint_max = static_cast<uint64_t>(UINT_MAX);
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cf_opt->ttl =
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db_options.max_open_files == -1 ? uint_max + rnd->Uniform(10000) : 0;
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cf_opt->periodic_compaction_seconds =
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db_options.max_open_files == -1 ? uint_max + rnd->Uniform(10000) : 0;
|
|
cf_opt->max_sequential_skip_in_iterations = uint_max + rnd->Uniform(10000);
|
|
cf_opt->target_file_size_base = uint_max + rnd->Uniform(10000);
|
|
cf_opt->max_compaction_bytes =
|
|
cf_opt->target_file_size_base * rnd->Uniform(100);
|
|
cf_opt->compaction_options_fifo.max_table_files_size =
|
|
uint_max + rnd->Uniform(10000);
|
|
cf_opt->min_blob_size = uint_max + rnd->Uniform(10000);
|
|
cf_opt->blob_file_size = uint_max + rnd->Uniform(10000);
|
|
cf_opt->blob_compaction_readahead_size = uint_max + rnd->Uniform(10000);
|
|
|
|
// unsigned int options
|
|
cf_opt->rate_limit_delay_max_milliseconds = rnd->Uniform(10000);
|
|
|
|
// pointer typed options
|
|
cf_opt->prefix_extractor.reset(RandomSliceTransform(rnd));
|
|
cf_opt->table_factory.reset(RandomTableFactory(rnd));
|
|
cf_opt->merge_operator.reset(RandomMergeOperator(rnd));
|
|
if (cf_opt->compaction_filter) {
|
|
delete cf_opt->compaction_filter;
|
|
}
|
|
cf_opt->compaction_filter = RandomCompactionFilter(rnd);
|
|
cf_opt->compaction_filter_factory.reset(RandomCompactionFilterFactory(rnd));
|
|
|
|
// custom typed options
|
|
cf_opt->compression = RandomCompressionType(rnd);
|
|
RandomCompressionTypeVector(cf_opt->num_levels,
|
|
&cf_opt->compression_per_level, rnd);
|
|
cf_opt->blob_compression_type = RandomCompressionType(rnd);
|
|
}
|
|
|
|
bool IsDirectIOSupported(Env* env, const std::string& dir) {
|
|
EnvOptions env_options;
|
|
env_options.use_mmap_writes = false;
|
|
env_options.use_direct_writes = true;
|
|
std::string tmp = TempFileName(dir, 999);
|
|
Status s;
|
|
{
|
|
std::unique_ptr<WritableFile> file;
|
|
s = env->NewWritableFile(tmp, &file, env_options);
|
|
}
|
|
if (s.ok()) {
|
|
s = env->DeleteFile(tmp);
|
|
}
|
|
return s.ok();
|
|
}
|
|
|
|
bool IsPrefetchSupported(const std::shared_ptr<FileSystem>& fs,
|
|
const std::string& dir) {
|
|
bool supported = false;
|
|
std::string tmp = TempFileName(dir, 999);
|
|
Random rnd(301);
|
|
std::string test_string = rnd.RandomString(4096);
|
|
Slice data(test_string);
|
|
Status s = WriteStringToFile(fs.get(), data, tmp, true);
|
|
if (s.ok()) {
|
|
std::unique_ptr<FSRandomAccessFile> file;
|
|
auto io_s = fs->NewRandomAccessFile(tmp, FileOptions(), &file, nullptr);
|
|
if (io_s.ok()) {
|
|
supported = !(file->Prefetch(0, data.size(), IOOptions(), nullptr)
|
|
.IsNotSupported());
|
|
}
|
|
s = fs->DeleteFile(tmp, IOOptions(), nullptr);
|
|
}
|
|
return s.ok() && supported;
|
|
}
|
|
|
|
size_t GetLinesCount(const std::string& fname, const std::string& pattern) {
|
|
std::stringstream ssbuf;
|
|
std::string line;
|
|
size_t count = 0;
|
|
|
|
std::ifstream inFile(fname.c_str());
|
|
ssbuf << inFile.rdbuf();
|
|
|
|
while (getline(ssbuf, line)) {
|
|
if (line.find(pattern) != std::string::npos) {
|
|
count++;
|
|
}
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
Status CorruptFile(Env* env, const std::string& fname, int offset,
|
|
int bytes_to_corrupt, bool verify_checksum /*=true*/) {
|
|
uint64_t size;
|
|
Status s = env->GetFileSize(fname, &size);
|
|
if (!s.ok()) {
|
|
return s;
|
|
} else if (offset < 0) {
|
|
// Relative to end of file; make it absolute
|
|
if (-offset > static_cast<int>(size)) {
|
|
offset = 0;
|
|
} else {
|
|
offset = static_cast<int>(size + offset);
|
|
}
|
|
}
|
|
if (offset > static_cast<int>(size)) {
|
|
offset = static_cast<int>(size);
|
|
}
|
|
if (offset + bytes_to_corrupt > static_cast<int>(size)) {
|
|
bytes_to_corrupt = static_cast<int>(size - offset);
|
|
}
|
|
|
|
// Do it
|
|
std::string contents;
|
|
s = ReadFileToString(env, fname, &contents);
|
|
if (s.ok()) {
|
|
for (int i = 0; i < bytes_to_corrupt; i++) {
|
|
contents[i + offset] ^= 0x80;
|
|
}
|
|
s = WriteStringToFile(env, contents, fname);
|
|
}
|
|
if (s.ok() && verify_checksum) {
|
|
#ifndef ROCKSDB_LITE
|
|
Options options;
|
|
options.env = env;
|
|
EnvOptions env_options;
|
|
Status v = VerifySstFileChecksum(options, env_options, fname);
|
|
assert(!v.ok());
|
|
#endif
|
|
}
|
|
return s;
|
|
}
|
|
|
|
Status TruncateFile(Env* env, const std::string& fname, uint64_t new_length) {
|
|
uint64_t old_length;
|
|
Status s = env->GetFileSize(fname, &old_length);
|
|
if (!s.ok() || new_length == old_length) {
|
|
return s;
|
|
}
|
|
// Do it
|
|
std::string contents;
|
|
s = ReadFileToString(env, fname, &contents);
|
|
if (s.ok()) {
|
|
contents.resize(static_cast<size_t>(new_length), 'b');
|
|
s = WriteStringToFile(env, contents, fname);
|
|
}
|
|
return s;
|
|
}
|
|
|
|
// Try and delete a directory if it exists
|
|
Status TryDeleteDir(Env* env, const std::string& dirname) {
|
|
bool is_dir = false;
|
|
Status s = env->IsDirectory(dirname, &is_dir);
|
|
if (s.ok() && is_dir) {
|
|
s = env->DeleteDir(dirname);
|
|
}
|
|
return s;
|
|
}
|
|
|
|
// Delete a directory if it exists
|
|
void DeleteDir(Env* env, const std::string& dirname) {
|
|
TryDeleteDir(env, dirname).PermitUncheckedError();
|
|
}
|
|
|
|
Status CreateEnvFromSystem(const ConfigOptions& config_options, Env** result,
|
|
std::shared_ptr<Env>* guard) {
|
|
const char* env_uri = getenv("TEST_ENV_URI");
|
|
const char* fs_uri = getenv("TEST_FS_URI");
|
|
if (env_uri || fs_uri) {
|
|
return Env::CreateFromUri(config_options,
|
|
(env_uri != nullptr) ? env_uri : "",
|
|
(fs_uri != nullptr) ? fs_uri : "", result, guard);
|
|
} else {
|
|
// Neither specified. Use the default
|
|
*result = config_options.env;
|
|
guard->reset();
|
|
return Status::OK();
|
|
}
|
|
}
|
|
namespace {
|
|
// A hacky skip list mem table that triggers flush after number of entries.
|
|
class SpecialMemTableRep : public MemTableRep {
|
|
public:
|
|
explicit SpecialMemTableRep(Allocator* allocator, MemTableRep* memtable,
|
|
int num_entries_flush)
|
|
: MemTableRep(allocator),
|
|
memtable_(memtable),
|
|
num_entries_flush_(num_entries_flush),
|
|
num_entries_(0) {}
|
|
|
|
virtual KeyHandle Allocate(const size_t len, char** buf) override {
|
|
return memtable_->Allocate(len, buf);
|
|
}
|
|
|
|
// Insert key into the list.
|
|
// REQUIRES: nothing that compares equal to key is currently in the list.
|
|
virtual void Insert(KeyHandle handle) override {
|
|
num_entries_++;
|
|
memtable_->Insert(handle);
|
|
}
|
|
|
|
void InsertConcurrently(KeyHandle handle) override {
|
|
num_entries_++;
|
|
memtable_->Insert(handle);
|
|
}
|
|
|
|
// Returns true iff an entry that compares equal to key is in the list.
|
|
virtual bool Contains(const char* key) const override {
|
|
return memtable_->Contains(key);
|
|
}
|
|
|
|
virtual size_t ApproximateMemoryUsage() override {
|
|
// Return a high memory usage when number of entries exceeds the threshold
|
|
// to trigger a flush.
|
|
return (num_entries_ < num_entries_flush_) ? 0 : 1024 * 1024 * 1024;
|
|
}
|
|
|
|
virtual void Get(const LookupKey& k, void* callback_args,
|
|
bool (*callback_func)(void* arg,
|
|
const char* entry)) override {
|
|
memtable_->Get(k, callback_args, callback_func);
|
|
}
|
|
|
|
uint64_t ApproximateNumEntries(const Slice& start_ikey,
|
|
const Slice& end_ikey) override {
|
|
return memtable_->ApproximateNumEntries(start_ikey, end_ikey);
|
|
}
|
|
|
|
virtual MemTableRep::Iterator* GetIterator(Arena* arena = nullptr) override {
|
|
return memtable_->GetIterator(arena);
|
|
}
|
|
|
|
virtual ~SpecialMemTableRep() override {}
|
|
|
|
private:
|
|
std::unique_ptr<MemTableRep> memtable_;
|
|
int num_entries_flush_;
|
|
int num_entries_;
|
|
};
|
|
class SpecialSkipListFactory : public MemTableRepFactory {
|
|
public:
|
|
#ifndef ROCKSDB_LITE
|
|
static bool Register(ObjectLibrary& library, const std::string& /*arg*/) {
|
|
library.AddFactory<MemTableRepFactory>(
|
|
ObjectLibrary::PatternEntry(SpecialSkipListFactory::kClassName(), true)
|
|
.AddNumber(":"),
|
|
[](const std::string& uri, std::unique_ptr<MemTableRepFactory>* guard,
|
|
std::string* /* errmsg */) {
|
|
auto colon = uri.find(":");
|
|
if (colon != std::string::npos) {
|
|
auto count = ParseInt(uri.substr(colon + 1));
|
|
guard->reset(new SpecialSkipListFactory(count));
|
|
} else {
|
|
guard->reset(new SpecialSkipListFactory(2));
|
|
}
|
|
return guard->get();
|
|
});
|
|
return true;
|
|
}
|
|
#endif // ROCKSDB_LITE
|
|
// After number of inserts exceeds `num_entries_flush` in a mem table, trigger
|
|
// flush.
|
|
explicit SpecialSkipListFactory(int num_entries_flush)
|
|
: num_entries_flush_(num_entries_flush) {}
|
|
|
|
using MemTableRepFactory::CreateMemTableRep;
|
|
virtual MemTableRep* CreateMemTableRep(
|
|
const MemTableRep::KeyComparator& compare, Allocator* allocator,
|
|
const SliceTransform* transform, Logger* /*logger*/) override {
|
|
return new SpecialMemTableRep(
|
|
allocator,
|
|
factory_.CreateMemTableRep(compare, allocator, transform, nullptr),
|
|
num_entries_flush_);
|
|
}
|
|
static const char* kClassName() { return "SpecialSkipListFactory"; }
|
|
virtual const char* Name() const override { return kClassName(); }
|
|
std::string GetId() const override {
|
|
std::string id = Name();
|
|
if (num_entries_flush_ > 0) {
|
|
id.append(":").append(ROCKSDB_NAMESPACE::ToString(num_entries_flush_));
|
|
}
|
|
return id;
|
|
}
|
|
|
|
bool IsInsertConcurrentlySupported() const override {
|
|
return factory_.IsInsertConcurrentlySupported();
|
|
}
|
|
|
|
private:
|
|
SkipListFactory factory_;
|
|
int num_entries_flush_;
|
|
};
|
|
} // namespace
|
|
|
|
MemTableRepFactory* NewSpecialSkipListFactory(int num_entries_per_flush) {
|
|
RegisterTestLibrary();
|
|
return new SpecialSkipListFactory(num_entries_per_flush);
|
|
}
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
// This method loads existing test classes into the ObjectRegistry
|
|
int RegisterTestObjects(ObjectLibrary& library, const std::string& arg) {
|
|
size_t num_types;
|
|
library.AddFactory<const Comparator>(
|
|
test::SimpleSuffixReverseComparator::kClassName(),
|
|
[](const std::string& /*uri*/,
|
|
std::unique_ptr<const Comparator>* /*guard*/,
|
|
std::string* /* errmsg */) {
|
|
static test::SimpleSuffixReverseComparator ssrc;
|
|
return &ssrc;
|
|
});
|
|
SpecialSkipListFactory::Register(library, arg);
|
|
library.AddFactory<MergeOperator>(
|
|
"Changling",
|
|
[](const std::string& uri, std::unique_ptr<MergeOperator>* guard,
|
|
std::string* /* errmsg */) {
|
|
guard->reset(new test::ChanglingMergeOperator(uri));
|
|
return guard->get();
|
|
});
|
|
library.AddFactory<CompactionFilter>(
|
|
"Changling",
|
|
[](const std::string& uri, std::unique_ptr<CompactionFilter>* /*guard*/,
|
|
std::string* /* errmsg */) {
|
|
return new test::ChanglingCompactionFilter(uri);
|
|
});
|
|
library.AddFactory<CompactionFilterFactory>(
|
|
"Changling", [](const std::string& uri,
|
|
std::unique_ptr<CompactionFilterFactory>* guard,
|
|
std::string* /* errmsg */) {
|
|
guard->reset(new test::ChanglingCompactionFilterFactory(uri));
|
|
return guard->get();
|
|
});
|
|
library.AddFactory<SystemClock>(
|
|
MockSystemClock::kClassName(),
|
|
[](const std::string& /*uri*/, std::unique_ptr<SystemClock>* guard,
|
|
std::string* /* errmsg */) {
|
|
guard->reset(new MockSystemClock(SystemClock::Default()));
|
|
return guard->get();
|
|
});
|
|
return static_cast<int>(library.GetFactoryCount(&num_types));
|
|
}
|
|
|
|
#endif // ROCKSDB_LITE
|
|
|
|
void RegisterTestLibrary(const std::string& arg) {
|
|
static bool registered = false;
|
|
if (!registered) {
|
|
registered = true;
|
|
#ifndef ROCKSDB_LITE
|
|
ObjectRegistry::Default()->AddLibrary("test", RegisterTestObjects, arg);
|
|
#else
|
|
(void)arg;
|
|
#endif // ROCKSDB_LITE
|
|
}
|
|
}
|
|
} // namespace test
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|