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rust-rocksdb/test_util/testutil.cc

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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include "test_util/testutil.h"
#include <fcntl.h>
#include <sys/stat.h>
#include <array>
#include <cctype>
#include <fstream>
#include <sstream>
#include "db/memtable_list.h"
#include "env/composite_env_wrapper.h"
#include "file/random_access_file_reader.h"
#include "file/sequence_file_reader.h"
#include "file/writable_file_writer.h"
#include "port/port.h"
#include "rocksdb/convenience.h"
#include "rocksdb/system_clock.h"
#include "rocksdb/utilities/object_registry.h"
#include "test_util/mock_time_env.h"
#include "test_util/sync_point.h"
#include "util/random.h"
#ifndef ROCKSDB_UNITTESTS_WITH_CUSTOM_OBJECTS_FROM_STATIC_LIBS
void RegisterCustomObjects(int /*argc*/, char** /*argv*/) {}
#endif
namespace ROCKSDB_NAMESPACE {
namespace test {
const uint32_t kDefaultFormatVersion = BlockBasedTableOptions().format_version;
const std::set<uint32_t> kFooterFormatVersionsToTest{
// Non-legacy, before big footer changes
5U,
// After big footer changes
6U,
// In case any interesting future changes
kDefaultFormatVersion,
kLatestFormatVersion,
};
std::string RandomKey(Random* rnd, int len, RandomKeyType type) {
// Make sure to generate a wide variety of characters so we
// test the boundary conditions for short-key optimizations.
static const char kTestChars[] = {'\0', '\1', 'a', 'b', 'c',
'd', 'e', '\xfd', '\xfe', '\xff'};
std::string result;
for (int i = 0; i < len; i++) {
std::size_t indx = 0;
switch (type) {
case RandomKeyType::RANDOM:
indx = rnd->Uniform(sizeof(kTestChars));
break;
case RandomKeyType::LARGEST:
indx = sizeof(kTestChars) - 1;
break;
case RandomKeyType::MIDDLE:
indx = sizeof(kTestChars) / 2;
break;
case RandomKeyType::SMALLEST:
indx = 0;
break;
}
result += kTestChars[indx];
}
return result;
}
const std::vector<UserDefinedTimestampTestMode>& GetUDTTestModes() {
static std::vector<UserDefinedTimestampTestMode> udt_test_modes = {
UserDefinedTimestampTestMode::kStripUserDefinedTimestamp,
UserDefinedTimestampTestMode::kNormal,
UserDefinedTimestampTestMode::kNone};
return udt_test_modes;
}
bool IsUDTEnabled(const UserDefinedTimestampTestMode& test_mode) {
return test_mode != UserDefinedTimestampTestMode::kNone;
}
bool ShouldPersistUDT(const UserDefinedTimestampTestMode& test_mode) {
return test_mode != UserDefinedTimestampTestMode::kStripUserDefinedTimestamp;
}
extern Slice CompressibleString(Random* rnd, double compressed_fraction,
int len, std::string* dst) {
int raw = static_cast<int>(len * compressed_fraction);
if (raw < 1) raw = 1;
std::string raw_data = rnd->RandomBinaryString(raw);
// Duplicate the random data until we have filled "len" bytes
dst->clear();
while (dst->size() < (unsigned int)len) {
dst->append(raw_data);
}
dst->resize(len);
return Slice(*dst);
}
namespace {
class Uint64ComparatorImpl : public Comparator {
public:
Uint64ComparatorImpl() {}
const char* Name() const override { return "rocksdb.Uint64Comparator"; }
int Compare(const Slice& a, const Slice& b) const override {
assert(a.size() == sizeof(uint64_t) && b.size() == sizeof(uint64_t));
const uint64_t* left = reinterpret_cast<const uint64_t*>(a.data());
const uint64_t* right = reinterpret_cast<const uint64_t*>(b.data());
uint64_t leftValue;
uint64_t rightValue;
GetUnaligned(left, &leftValue);
GetUnaligned(right, &rightValue);
if (leftValue == rightValue) {
return 0;
} else if (leftValue < rightValue) {
return -1;
} else {
return 1;
}
}
void FindShortestSeparator(std::string* /*start*/,
const Slice& /*limit*/) const override {
return;
}
void FindShortSuccessor(std::string* /*key*/) const override { return; }
};
} // namespace
const Comparator* Uint64Comparator() {
static Uint64ComparatorImpl uint64comp;
return &uint64comp;
}
const Comparator* BytewiseComparatorWithU64TsWrapper() {
ConfigOptions config_options;
const Comparator* user_comparator = nullptr;
Status s = Comparator::CreateFromString(
config_options, "leveldb.BytewiseComparator.u64ts", &user_comparator);
s.PermitUncheckedError();
return user_comparator;
}
const Comparator* ReverseBytewiseComparatorWithU64TsWrapper() {
ConfigOptions config_options;
const Comparator* user_comparator = nullptr;
Status s = Comparator::CreateFromString(
config_options, "rocksdb.ReverseBytewiseComparator.u64ts",
&user_comparator);
s.PermitUncheckedError();
return user_comparator;
}
void CorruptKeyType(InternalKey* ikey) {
std::string keystr = ikey->Encode().ToString();
keystr[keystr.size() - 8] = kTypeLogData;
ikey->DecodeFrom(Slice(keystr.data(), keystr.size()));
}
std::string KeyStr(const std::string& user_key, const SequenceNumber& seq,
const ValueType& t, bool corrupt) {
InternalKey k(user_key, seq, t);
if (corrupt) {
CorruptKeyType(&k);
}
return k.Encode().ToString();
}
std::string KeyStr(uint64_t ts, const std::string& user_key,
const SequenceNumber& seq, const ValueType& t,
bool corrupt) {
std::string user_key_with_ts(user_key);
std::string ts_str;
PutFixed64(&ts_str, ts);
user_key_with_ts.append(ts_str);
return KeyStr(user_key_with_ts, seq, t, corrupt);
}
bool SleepingBackgroundTask::TimedWaitUntilSleeping(uint64_t wait_time) {
auto abs_time = SystemClock::Default()->NowMicros() + wait_time;
MutexLock l(&mutex_);
while (!sleeping_ || !should_sleep_) {
if (bg_cv_.TimedWait(abs_time)) {
return true;
}
}
return false;
}
bool SleepingBackgroundTask::TimedWaitUntilDone(uint64_t wait_time) {
auto abs_time = SystemClock::Default()->NowMicros() + wait_time;
MutexLock l(&mutex_);
while (!done_with_sleep_) {
if (bg_cv_.TimedWait(abs_time)) {
return true;
}
}
return false;
}
std::string RandomName(Random* rnd, const size_t len) {
std::stringstream ss;
for (size_t i = 0; i < len; ++i) {
ss << static_cast<char>(rnd->Uniform(26) + 'a');
}
return ss.str();
}
CompressionType RandomCompressionType(Random* rnd) {
auto ret = static_cast<CompressionType>(rnd->Uniform(6));
while (!CompressionTypeSupported(ret)) {
ret = static_cast<CompressionType>((static_cast<int>(ret) + 1) % 6);
}
return ret;
}
void RandomCompressionTypeVector(const size_t count,
std::vector<CompressionType>* types,
Random* rnd) {
types->clear();
for (size_t i = 0; i < count; ++i) {
types->emplace_back(RandomCompressionType(rnd));
}
}
const SliceTransform* RandomSliceTransform(Random* rnd, int pre_defined) {
int random_num = pre_defined >= 0 ? pre_defined : rnd->Uniform(4);
switch (random_num) {
case 0:
return NewFixedPrefixTransform(rnd->Uniform(20) + 1);
case 1:
return NewCappedPrefixTransform(rnd->Uniform(20) + 1);
case 2:
return NewNoopTransform();
default:
return nullptr;
}
}
BlockBasedTableOptions RandomBlockBasedTableOptions(Random* rnd) {
BlockBasedTableOptions opt;
opt.cache_index_and_filter_blocks = rnd->Uniform(2);
opt.pin_l0_filter_and_index_blocks_in_cache = rnd->Uniform(2);
opt.pin_top_level_index_and_filter = rnd->Uniform(2);
using IndexType = BlockBasedTableOptions::IndexType;
const std::array<IndexType, 4> index_types = {
{IndexType::kBinarySearch, IndexType::kHashSearch,
IndexType::kTwoLevelIndexSearch, IndexType::kBinarySearchWithFirstKey}};
opt.index_type =
index_types[rnd->Uniform(static_cast<int>(index_types.size()))];
opt.checksum = static_cast<ChecksumType>(rnd->Uniform(3));
opt.block_size = rnd->Uniform(10000000);
opt.block_size_deviation = rnd->Uniform(100);
opt.block_restart_interval = rnd->Uniform(100);
opt.index_block_restart_interval = rnd->Uniform(100);
opt.whole_key_filtering = rnd->Uniform(2);
return opt;
}
TableFactory* RandomTableFactory(Random* rnd, int pre_defined) {
int random_num = pre_defined >= 0 ? pre_defined : rnd->Uniform(4);
switch (random_num) {
case 0:
return NewPlainTableFactory();
case 1:
return NewCuckooTableFactory();
default:
return NewBlockBasedTableFactory();
}
}
MergeOperator* RandomMergeOperator(Random* rnd) {
return new ChanglingMergeOperator(RandomName(rnd, 10));
}
CompactionFilter* RandomCompactionFilter(Random* rnd) {
return new ChanglingCompactionFilter(RandomName(rnd, 10));
}
CompactionFilterFactory* RandomCompactionFilterFactory(Random* rnd) {
return new ChanglingCompactionFilterFactory(RandomName(rnd, 10));
}
void RandomInitDBOptions(DBOptions* db_opt, Random* rnd) {
// boolean options
db_opt->advise_random_on_open = rnd->Uniform(2);
db_opt->allow_mmap_reads = rnd->Uniform(2);
db_opt->allow_mmap_writes = rnd->Uniform(2);
db_opt->use_direct_reads = rnd->Uniform(2);
db_opt->use_direct_io_for_flush_and_compaction = rnd->Uniform(2);
db_opt->create_if_missing = rnd->Uniform(2);
db_opt->create_missing_column_families = rnd->Uniform(2);
db_opt->enable_thread_tracking = rnd->Uniform(2);
db_opt->error_if_exists = rnd->Uniform(2);
db_opt->is_fd_close_on_exec = rnd->Uniform(2);
db_opt->paranoid_checks = rnd->Uniform(2);
db_opt->track_and_verify_wals_in_manifest = rnd->Uniform(2);
db_opt->verify_sst_unique_id_in_manifest = rnd->Uniform(2);
db_opt->skip_stats_update_on_db_open = rnd->Uniform(2);
db_opt->skip_checking_sst_file_sizes_on_db_open = rnd->Uniform(2);
db_opt->use_adaptive_mutex = rnd->Uniform(2);
db_opt->use_fsync = rnd->Uniform(2);
db_opt->recycle_log_file_num = rnd->Uniform(2);
db_opt->avoid_flush_during_recovery = rnd->Uniform(2);
db_opt->avoid_flush_during_shutdown = rnd->Uniform(2);
db_opt->enforce_single_del_contracts = rnd->Uniform(2);
// int options
db_opt->max_background_compactions = rnd->Uniform(100);
db_opt->max_background_flushes = rnd->Uniform(100);
db_opt->max_file_opening_threads = rnd->Uniform(100);
db_opt->max_open_files = rnd->Uniform(100);
db_opt->table_cache_numshardbits = rnd->Uniform(100);
// size_t options
db_opt->db_write_buffer_size = rnd->Uniform(10000);
db_opt->keep_log_file_num = rnd->Uniform(10000);
db_opt->log_file_time_to_roll = rnd->Uniform(10000);
db_opt->manifest_preallocation_size = rnd->Uniform(10000);
db_opt->max_log_file_size = rnd->Uniform(10000);
// std::string options
db_opt->db_log_dir = "path/to/db_log_dir";
db_opt->wal_dir = "path/to/wal_dir";
// uint32_t options
db_opt->max_subcompactions = rnd->Uniform(100000);
// uint64_t options
static const uint64_t uint_max = static_cast<uint64_t>(UINT_MAX);
db_opt->WAL_size_limit_MB = uint_max + rnd->Uniform(100000);
db_opt->WAL_ttl_seconds = uint_max + rnd->Uniform(100000);
db_opt->bytes_per_sync = uint_max + rnd->Uniform(100000);
db_opt->delayed_write_rate = uint_max + rnd->Uniform(100000);
db_opt->delete_obsolete_files_period_micros = uint_max + rnd->Uniform(100000);
db_opt->max_manifest_file_size = uint_max + rnd->Uniform(100000);
db_opt->max_total_wal_size = uint_max + rnd->Uniform(100000);
db_opt->wal_bytes_per_sync = uint_max + rnd->Uniform(100000);
// unsigned int options
db_opt->stats_dump_period_sec = rnd->Uniform(100000);
}
void RandomInitCFOptions(ColumnFamilyOptions* cf_opt, DBOptions& db_options,
Random* rnd) {
cf_opt->compaction_style = (CompactionStyle)(rnd->Uniform(4));
// boolean options
cf_opt->report_bg_io_stats = rnd->Uniform(2);
cf_opt->disable_auto_compactions = rnd->Uniform(2);
cf_opt->inplace_update_support = rnd->Uniform(2);
cf_opt->level_compaction_dynamic_level_bytes = rnd->Uniform(2);
cf_opt->optimize_filters_for_hits = rnd->Uniform(2);
cf_opt->paranoid_file_checks = rnd->Uniform(2);
cf_opt->force_consistency_checks = rnd->Uniform(2);
cf_opt->compaction_options_fifo.allow_compaction = rnd->Uniform(2);
cf_opt->memtable_whole_key_filtering = rnd->Uniform(2);
cf_opt->enable_blob_files = rnd->Uniform(2);
cf_opt->enable_blob_garbage_collection = rnd->Uniform(2);
// double options
cf_opt->memtable_prefix_bloom_size_ratio =
static_cast<double>(rnd->Uniform(10000)) / 20000.0;
cf_opt->blob_garbage_collection_age_cutoff = rnd->Uniform(10000) / 10000.0;
cf_opt->blob_garbage_collection_force_threshold =
rnd->Uniform(10000) / 10000.0;
// int options
cf_opt->level0_file_num_compaction_trigger = rnd->Uniform(100);
cf_opt->level0_slowdown_writes_trigger = rnd->Uniform(100);
cf_opt->level0_stop_writes_trigger = rnd->Uniform(100);
cf_opt->max_bytes_for_level_multiplier = rnd->Uniform(100);
cf_opt->max_write_buffer_number = rnd->Uniform(100);
cf_opt->max_write_buffer_number_to_maintain = rnd->Uniform(100);
cf_opt->max_write_buffer_size_to_maintain = rnd->Uniform(10000);
cf_opt->min_write_buffer_number_to_merge = rnd->Uniform(100);
cf_opt->num_levels = rnd->Uniform(100);
cf_opt->target_file_size_multiplier = rnd->Uniform(100);
// vector int options
cf_opt->max_bytes_for_level_multiplier_additional.resize(cf_opt->num_levels);
for (int i = 0; i < cf_opt->num_levels; i++) {
cf_opt->max_bytes_for_level_multiplier_additional[i] = rnd->Uniform(100);
}
// size_t options
cf_opt->arena_block_size = rnd->Uniform(10000);
cf_opt->inplace_update_num_locks = rnd->Uniform(10000);
cf_opt->max_successive_merges = rnd->Uniform(10000);
cf_opt->memtable_huge_page_size = rnd->Uniform(10000);
cf_opt->write_buffer_size = rnd->Uniform(10000);
// uint32_t options
cf_opt->bloom_locality = rnd->Uniform(10000);
cf_opt->max_bytes_for_level_base = rnd->Uniform(10000);
// uint64_t options
static const uint64_t uint_max = static_cast<uint64_t>(UINT_MAX);
cf_opt->ttl =
db_options.max_open_files == -1 ? uint_max + rnd->Uniform(10000) : 0;
cf_opt->periodic_compaction_seconds =
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);
// 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) {
Options options;
options.env = env;
EnvOptions env_options;
Status v = VerifySstFileChecksum(options, env_options, fname);
assert(!v.ok());
}
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:
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;
}
// After number of inserts >= `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(std::to_string(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);
}
// 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));
}
void RegisterTestLibrary(const std::string& arg) {
static bool registered = false;
if (!registered) {
registered = true;
ObjectRegistry::Default()->AddLibrary("test", RegisterTestObjects, arg);
}
}
} // namespace test
} // namespace ROCKSDB_NAMESPACE