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rocksdb/db/listener_test.cc

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// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
#include "db/dbformat.h"
#include "db/db_impl.h"
#include "db/filename.h"
#include "db/version_set.h"
#include "db/write_batch_internal.h"
#include "rocksdb/cache.h"
#include "rocksdb/compaction_filter.h"
#include "rocksdb/db.h"
#include "rocksdb/env.h"
#include "rocksdb/filter_policy.h"
#include "rocksdb/perf_context.h"
#include "rocksdb/slice.h"
#include "rocksdb/slice_transform.h"
#include "rocksdb/table.h"
#include "rocksdb/options.h"
#include "rocksdb/table_properties.h"
#include "table/block_based_table_factory.h"
#include "table/plain_table_factory.h"
#include "util/hash.h"
#include "util/hash_linklist_rep.h"
#include "utilities/merge_operators.h"
#include "util/logging.h"
#include "util/mutexlock.h"
#include "util/rate_limiter.h"
#include "util/statistics.h"
#include "util/testharness.h"
#include "util/sync_point.h"
#include "util/testutil.h"
#ifndef ROCKSDB_LITE
namespace rocksdb {
class EventListenerTest {
public:
EventListenerTest() {
dbname_ = test::TmpDir() + "/listener_test";
ASSERT_OK(DestroyDB(dbname_, Options()));
db_ = nullptr;
Reopen();
}
~EventListenerTest() {
Close();
Options options;
options.db_paths.emplace_back(dbname_, 0);
options.db_paths.emplace_back(dbname_ + "_2", 0);
options.db_paths.emplace_back(dbname_ + "_3", 0);
options.db_paths.emplace_back(dbname_ + "_4", 0);
ASSERT_OK(DestroyDB(dbname_, options));
}
void CreateColumnFamilies(const std::vector<std::string>& cfs,
const ColumnFamilyOptions* options = nullptr) {
ColumnFamilyOptions cf_opts;
cf_opts = ColumnFamilyOptions(Options());
int cfi = handles_.size();
handles_.resize(cfi + cfs.size());
for (auto cf : cfs) {
ASSERT_OK(db_->CreateColumnFamily(cf_opts, cf, &handles_[cfi++]));
}
}
void Close() {
for (auto h : handles_) {
delete h;
}
handles_.clear();
delete db_;
db_ = nullptr;
}
void ReopenWithColumnFamilies(const std::vector<std::string>& cfs,
const Options* options = nullptr) {
ASSERT_OK(TryReopenWithColumnFamilies(cfs, options));
}
Status TryReopenWithColumnFamilies(const std::vector<std::string>& cfs,
const Options* options = nullptr) {
Close();
Options opts = (options == nullptr) ? Options() : *options;
std::vector<const Options*> v_opts(cfs.size(), &opts);
return TryReopenWithColumnFamilies(cfs, v_opts);
}
Status TryReopenWithColumnFamilies(
const std::vector<std::string>& cfs,
const std::vector<const Options*>& options) {
Close();
ASSERT_EQ(cfs.size(), options.size());
std::vector<ColumnFamilyDescriptor> column_families;
for (size_t i = 0; i < cfs.size(); ++i) {
column_families.push_back(ColumnFamilyDescriptor(cfs[i], *options[i]));
}
DBOptions db_opts = DBOptions(*options[0]);
return DB::Open(db_opts, dbname_, column_families, &handles_, &db_);
}
Status TryReopen(Options* options = nullptr) {
Close();
Options opts;
if (options != nullptr) {
opts = *options;
} else {
opts.create_if_missing = true;
}
return DB::Open(opts, dbname_, &db_);
}
void Reopen(Options* options = nullptr) {
ASSERT_OK(TryReopen(options));
}
void CreateAndReopenWithCF(const std::vector<std::string>& cfs,
const Options* options = nullptr) {
CreateColumnFamilies(cfs, options);
std::vector<std::string> cfs_plus_default = cfs;
cfs_plus_default.insert(cfs_plus_default.begin(), kDefaultColumnFamilyName);
ReopenWithColumnFamilies(cfs_plus_default, options);
}
DBImpl* dbfull() {
return reinterpret_cast<DBImpl*>(db_);
}
Status Put(int cf, const Slice& k, const Slice& v,
WriteOptions wo = WriteOptions()) {
return db_->Put(wo, handles_[cf], k, v);
}
Status Flush(int cf = 0) {
if (cf == 0) {
return db_->Flush(FlushOptions());
} else {
return db_->Flush(FlushOptions(), handles_[cf]);
}
}
DB* db_;
std::string dbname_;
std::vector<ColumnFamilyHandle*> handles_;
};
class TestFlushListener : public EventListener {
public:
void OnFlushCompleted(
DB* db, const std::string& name,
const std::string& file_path,
bool triggered_writes_slowdown,
bool triggered_writes_stop) override {
flushed_dbs_.push_back(db);
flushed_column_family_names_.push_back(name);
if (triggered_writes_slowdown) {
slowdown_count++;
}
if (triggered_writes_stop) {
stop_count++;
}
}
std::vector<std::string> flushed_column_family_names_;
std::vector<DB*> flushed_dbs_;
int slowdown_count;
int stop_count;
};
TEST(EventListenerTest, OnSingleDBFlushTest) {
Options options;
TestFlushListener* listener = new TestFlushListener();
options.listeners.emplace_back(listener);
std::vector<std::string> cf_names = {
"pikachu", "ilya", "muromec", "dobrynia",
"nikitich", "alyosha", "popovich"};
CreateAndReopenWithCF(cf_names, &options);
ASSERT_OK(Put(1, "pikachu", "pikachu"));
ASSERT_OK(Put(2, "ilya", "ilya"));
ASSERT_OK(Put(3, "muromec", "muromec"));
ASSERT_OK(Put(4, "dobrynia", "dobrynia"));
ASSERT_OK(Put(5, "nikitich", "nikitich"));
ASSERT_OK(Put(6, "alyosha", "alyosha"));
ASSERT_OK(Put(7, "popovich", "popovich"));
for (size_t i = 1; i < 8; ++i) {
Flush(i);
dbfull()->TEST_WaitForFlushMemTable();
ASSERT_EQ(listener->flushed_dbs_.size(), i);
ASSERT_EQ(listener->flushed_column_family_names_.size(), i);
}
// make sure call-back functions are called in the right order
for (size_t i = 0; i < cf_names.size(); ++i) {
ASSERT_EQ(listener->flushed_dbs_[i], db_);
ASSERT_EQ(listener->flushed_column_family_names_[i], cf_names[i]);
}
}
TEST(EventListenerTest, MultiCF) {
Options options;
TestFlushListener* listener = new TestFlushListener();
options.listeners.emplace_back(listener);
std::vector<std::string> cf_names = {
"pikachu", "ilya", "muromec", "dobrynia",
"nikitich", "alyosha", "popovich"};
CreateAndReopenWithCF(cf_names, &options);
ASSERT_OK(Put(1, "pikachu", "pikachu"));
ASSERT_OK(Put(2, "ilya", "ilya"));
ASSERT_OK(Put(3, "muromec", "muromec"));
ASSERT_OK(Put(4, "dobrynia", "dobrynia"));
ASSERT_OK(Put(5, "nikitich", "nikitich"));
ASSERT_OK(Put(6, "alyosha", "alyosha"));
ASSERT_OK(Put(7, "popovich", "popovich"));
for (size_t i = 1; i < 8; ++i) {
Flush(i);
ASSERT_EQ(listener->flushed_dbs_.size(), i);
ASSERT_EQ(listener->flushed_column_family_names_.size(), i);
}
// make sure call-back functions are called in the right order
for (size_t i = 0; i < cf_names.size(); i++) {
ASSERT_EQ(listener->flushed_dbs_[i], db_);
ASSERT_EQ(listener->flushed_column_family_names_[i], cf_names[i]);
}
}
TEST(EventListenerTest, MultiDBMultiListeners) {
std::vector<TestFlushListener*> listeners;
const int kNumDBs = 5;
const int kNumListeners = 10;
for (int i = 0; i < kNumListeners; ++i) {
listeners.emplace_back(new TestFlushListener());
}
std::vector<std::string> cf_names = {
"pikachu", "ilya", "muromec", "dobrynia",
"nikitich", "alyosha", "popovich"};
Options options;
options.create_if_missing = true;
for (int i = 0; i < kNumListeners; ++i) {
options.listeners.emplace_back(listeners[i]);
}
DBOptions db_opts(options);
ColumnFamilyOptions cf_opts(options);
std::vector<DB*> dbs;
std::vector<std::vector<ColumnFamilyHandle *>> vec_handles;
for (int d = 0; d < kNumDBs; ++d) {
ASSERT_OK(DestroyDB(dbname_ + std::to_string(d), options));
DB* db;
std::vector<ColumnFamilyHandle*> handles;
ASSERT_OK(DB::Open(options, dbname_ + std::to_string(d), &db));
for (size_t c = 0; c < cf_names.size(); ++c) {
ColumnFamilyHandle* handle;
db->CreateColumnFamily(cf_opts, cf_names[c], &handle);
handles.push_back(handle);
}
vec_handles.push_back(std::move(handles));
dbs.push_back(db);
}
for (int d = 0; d < kNumDBs; ++d) {
for (size_t c = 0; c < cf_names.size(); ++c) {
ASSERT_OK(dbs[d]->Put(WriteOptions(), vec_handles[d][c],
cf_names[c], cf_names[c]));
}
}
for (size_t c = 0; c < cf_names.size(); ++c) {
for (int d = 0; d < kNumDBs; ++d) {
ASSERT_OK(dbs[d]->Flush(FlushOptions(), vec_handles[d][c]));
reinterpret_cast<DBImpl*>(dbs[d])->TEST_WaitForFlushMemTable();
}
}
for (auto* listener : listeners) {
int pos = 0;
for (size_t c = 0; c < cf_names.size(); ++c) {
for (int d = 0; d < kNumDBs; ++d) {
ASSERT_EQ(listener->flushed_dbs_[pos], dbs[d]);
ASSERT_EQ(listener->flushed_column_family_names_[pos], cf_names[c]);
pos++;
}
}
}
for (auto handles : vec_handles) {
for (auto h : handles) {
delete h;
}
handles.clear();
}
vec_handles.clear();
for (auto db : dbs) {
delete db;
}
}
TEST(EventListenerTest, DisableBGCompaction) {
Options options;
TestFlushListener* listener = new TestFlushListener();
const int kSlowdownTrigger = 5;
const int kStopTrigger = 10;
options.level0_slowdown_writes_trigger = kSlowdownTrigger;
options.level0_stop_writes_trigger = kStopTrigger;
options.listeners.emplace_back(listener);
// BG compaction is disabled. Number of L0 files will simply keeps
// increasing in this test.
options.compaction_style = kCompactionStyleNone;
options.compression = kNoCompression;
options.write_buffer_size = 100000; // Small write buffer
CreateAndReopenWithCF({"pikachu"}, &options);
WriteOptions wopts;
wopts.timeout_hint_us = 100000;
ColumnFamilyMetaData cf_meta;
db_->GetColumnFamilyMetaData(handles_[1], &cf_meta);
// keep writing until writes are forced to stop.
for (int i = 0; static_cast<int>(cf_meta.file_count) < kStopTrigger; ++i) {
Put(1, std::to_string(i), std::string(100000, 'x'), wopts);
db_->GetColumnFamilyMetaData(handles_[1], &cf_meta);
}
ASSERT_GE(listener->slowdown_count, kStopTrigger - kSlowdownTrigger);
ASSERT_GE(listener->stop_count, 1);
}
} // namespace rocksdb
#endif // ROCKSDB_LITE
int main(int argc, char** argv) {
return rocksdb::test::RunAllTests();
}