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rocksdb/utilities/env_librados_test.cc

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// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
// Copyright (c) 2016, Red Hat, 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).
#ifndef ROCKSDB_LITE
#include "rocksdb/utilities/env_librados.h"
#include <rados/librados.hpp>
#include "env/mock_env.h"
#include "test_util/testharness.h"
#include "rocksdb/db.h"
#include "rocksdb/slice.h"
#include "rocksdb/options.h"
#include "util/random.h"
#include <chrono>
#include <ostream>
#include "rocksdb/utilities/transaction_db.h"
class Timer {
typedef std::chrono::high_resolution_clock high_resolution_clock;
typedef std::chrono::milliseconds milliseconds;
public:
explicit Timer(bool run = false)
{
if (run)
Reset();
}
void Reset()
{
_start = high_resolution_clock::now();
}
milliseconds Elapsed() const
{
return std::chrono::duration_cast<milliseconds>(high_resolution_clock::now() - _start);
}
template <typename T, typename Traits>
friend std::basic_ostream<T, Traits>& operator<<(std::basic_ostream<T, Traits>& out, const Timer& timer)
{
return out << timer.Elapsed().count();
}
private:
high_resolution_clock::time_point _start;
};
namespace ROCKSDB_NAMESPACE {
class EnvLibradosTest : public testing::Test {
public:
// we will use all of these below
const std::string db_name = "env_librados_test_db";
const std::string db_pool = db_name + "_pool";
const char *keyring = "admin";
const char *config = "../ceph/src/ceph.conf";
EnvLibrados* env_;
const EnvOptions soptions_;
EnvLibradosTest()
: env_(new EnvLibrados(db_name, config, db_pool)) {
}
~EnvLibradosTest() {
delete env_;
librados::Rados rados;
int ret = 0;
do {
ret = rados.init("admin"); // just use the client.admin keyring
if (ret < 0) { // let's handle any error that might have come back
std::cerr << "couldn't initialize rados! error " << ret << std::endl;
ret = EXIT_FAILURE;
break;
}
ret = rados.conf_read_file(config);
if (ret < 0) {
// This could fail if the config file is malformed, but it'd be hard.
std::cerr << "failed to parse config file " << config
<< "! error" << ret << std::endl;
ret = EXIT_FAILURE;
break;
}
/*
* next, we actually connect to the cluster
*/
ret = rados.connect();
if (ret < 0) {
std::cerr << "couldn't connect to cluster! error " << ret << std::endl;
ret = EXIT_FAILURE;
break;
}
/*
* And now we're done, so let's remove our pool and then
* shut down the connection gracefully.
*/
int delete_ret = rados.pool_delete(db_pool.c_str());
if (delete_ret < 0) {
// be careful not to
std::cerr << "We failed to delete our test pool!" << db_pool << delete_ret << std::endl;
ret = EXIT_FAILURE;
}
} while (0);
}
};
TEST_F(EnvLibradosTest, Basics) {
uint64_t file_size;
std::unique_ptr<WritableFile> writable_file;
std::vector<std::string> children;
ASSERT_OK(env_->CreateDir("/dir"));
// Check that the directory is empty.
ASSERT_EQ(Status::NotFound(), env_->FileExists("/dir/non_existent"));
ASSERT_TRUE(!env_->GetFileSize("/dir/non_existent", &file_size).ok());
ASSERT_OK(env_->GetChildren("/dir", &children));
ASSERT_EQ(0U, children.size());
// Create a file.
ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file, soptions_));
writable_file.reset();
// Check that the file exists.
ASSERT_OK(env_->FileExists("/dir/f"));
ASSERT_OK(env_->GetFileSize("/dir/f", &file_size));
ASSERT_EQ(0U, file_size);
ASSERT_OK(env_->GetChildren("/dir", &children));
ASSERT_EQ(1U, children.size());
ASSERT_EQ("f", children[0]);
// Write to the file.
ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file, soptions_));
ASSERT_OK(writable_file->Append("abc"));
writable_file.reset();
// Check for expected size.
ASSERT_OK(env_->GetFileSize("/dir/f", &file_size));
ASSERT_EQ(3U, file_size);
// Check that renaming works.
ASSERT_TRUE(!env_->RenameFile("/dir/non_existent", "/dir/g").ok());
ASSERT_OK(env_->RenameFile("/dir/f", "/dir/g"));
ASSERT_EQ(Status::NotFound(), env_->FileExists("/dir/f"));
ASSERT_OK(env_->FileExists("/dir/g"));
ASSERT_OK(env_->GetFileSize("/dir/g", &file_size));
ASSERT_EQ(3U, file_size);
// Check that opening non-existent file fails.
std::unique_ptr<SequentialFile> seq_file;
std::unique_ptr<RandomAccessFile> rand_file;
ASSERT_TRUE(
!env_->NewSequentialFile("/dir/non_existent", &seq_file, soptions_).ok());
ASSERT_TRUE(!seq_file);
ASSERT_TRUE(!env_->NewRandomAccessFile("/dir/non_existent", &rand_file,
soptions_).ok());
ASSERT_TRUE(!rand_file);
// Check that deleting works.
ASSERT_TRUE(!env_->DeleteFile("/dir/non_existent").ok());
ASSERT_OK(env_->DeleteFile("/dir/g"));
ASSERT_EQ(Status::NotFound(), env_->FileExists("/dir/g"));
ASSERT_OK(env_->GetChildren("/dir", &children));
ASSERT_EQ(0U, children.size());
ASSERT_OK(env_->DeleteDir("/dir"));
}
TEST_F(EnvLibradosTest, ReadWrite) {
std::unique_ptr<WritableFile> writable_file;
std::unique_ptr<SequentialFile> seq_file;
std::unique_ptr<RandomAccessFile> rand_file;
Slice result;
char scratch[100];
ASSERT_OK(env_->CreateDir("/dir"));
ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file, soptions_));
ASSERT_OK(writable_file->Append("hello "));
ASSERT_OK(writable_file->Append("world"));
writable_file.reset();
// Read sequentially.
ASSERT_OK(env_->NewSequentialFile("/dir/f", &seq_file, soptions_));
ASSERT_OK(seq_file->Read(5, &result, scratch)); // Read "hello".
ASSERT_EQ(0, result.compare("hello"));
ASSERT_OK(seq_file->Skip(1));
ASSERT_OK(seq_file->Read(1000, &result, scratch)); // Read "world".
ASSERT_EQ(0, result.compare("world"));
ASSERT_OK(seq_file->Read(1000, &result, scratch)); // Try reading past EOF.
ASSERT_EQ(0U, result.size());
ASSERT_OK(seq_file->Skip(100)); // Try to skip past end of file.
ASSERT_OK(seq_file->Read(1000, &result, scratch));
ASSERT_EQ(0U, result.size());
// Random reads.
ASSERT_OK(env_->NewRandomAccessFile("/dir/f", &rand_file, soptions_));
ASSERT_OK(rand_file->Read(6, 5, &result, scratch)); // Read "world".
ASSERT_EQ(0, result.compare("world"));
ASSERT_OK(rand_file->Read(0, 5, &result, scratch)); // Read "hello".
ASSERT_EQ(0, result.compare("hello"));
ASSERT_OK(rand_file->Read(10, 100, &result, scratch)); // Read "d".
ASSERT_EQ(0, result.compare("d"));
// Too high offset.
ASSERT_OK(rand_file->Read(1000, 5, &result, scratch));
}
TEST_F(EnvLibradosTest, Locks) {
FileLock* lock = nullptr;
std::unique_ptr<WritableFile> writable_file;
ASSERT_OK(env_->CreateDir("/dir"));
ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file, soptions_));
// These are no-ops, but we test they return success.
ASSERT_OK(env_->LockFile("some file", &lock));
ASSERT_OK(env_->UnlockFile(lock));
ASSERT_OK(env_->LockFile("/dir/f", &lock));
ASSERT_OK(env_->UnlockFile(lock));
}
TEST_F(EnvLibradosTest, Misc) {
std::string test_dir;
ASSERT_OK(env_->GetTestDirectory(&test_dir));
ASSERT_TRUE(!test_dir.empty());
std::unique_ptr<WritableFile> writable_file;
ASSERT_TRUE(!env_->NewWritableFile("/a/b", &writable_file, soptions_).ok());
ASSERT_OK(env_->NewWritableFile("/a", &writable_file, soptions_));
// These are no-ops, but we test they return success.
ASSERT_OK(writable_file->Sync());
ASSERT_OK(writable_file->Flush());
ASSERT_OK(writable_file->Close());
writable_file.reset();
}
TEST_F(EnvLibradosTest, LargeWrite) {
const size_t kWriteSize = 300 * 1024;
char* scratch = new char[kWriteSize * 2];
std::string write_data;
for (size_t i = 0; i < kWriteSize; ++i) {
write_data.append(1, 'h');
}
std::unique_ptr<WritableFile> writable_file;
ASSERT_OK(env_->CreateDir("/dir"));
ASSERT_OK(env_->NewWritableFile("/dir/g", &writable_file, soptions_));
ASSERT_OK(writable_file->Append("foo"));
ASSERT_OK(writable_file->Append(write_data));
writable_file.reset();
std::unique_ptr<SequentialFile> seq_file;
Slice result;
ASSERT_OK(env_->NewSequentialFile("/dir/g", &seq_file, soptions_));
ASSERT_OK(seq_file->Read(3, &result, scratch)); // Read "foo".
ASSERT_EQ(0, result.compare("foo"));
size_t read = 0;
std::string read_data;
while (read < kWriteSize) {
ASSERT_OK(seq_file->Read(kWriteSize - read, &result, scratch));
read_data.append(result.data(), result.size());
read += result.size();
}
ASSERT_TRUE(write_data == read_data);
delete[] scratch;
}
TEST_F(EnvLibradosTest, FrequentlySmallWrite) {
const size_t kWriteSize = 1 << 10;
char* scratch = new char[kWriteSize * 2];
std::string write_data;
for (size_t i = 0; i < kWriteSize; ++i) {
write_data.append(1, 'h');
}
std::unique_ptr<WritableFile> writable_file;
ASSERT_OK(env_->CreateDir("/dir"));
ASSERT_OK(env_->NewWritableFile("/dir/g", &writable_file, soptions_));
ASSERT_OK(writable_file->Append("foo"));
for (size_t i = 0; i < kWriteSize; ++i) {
ASSERT_OK(writable_file->Append("h"));
}
writable_file.reset();
std::unique_ptr<SequentialFile> seq_file;
Slice result;
ASSERT_OK(env_->NewSequentialFile("/dir/g", &seq_file, soptions_));
ASSERT_OK(seq_file->Read(3, &result, scratch)); // Read "foo".
ASSERT_EQ(0, result.compare("foo"));
size_t read = 0;
std::string read_data;
while (read < kWriteSize) {
ASSERT_OK(seq_file->Read(kWriteSize - read, &result, scratch));
read_data.append(result.data(), result.size());
read += result.size();
}
ASSERT_TRUE(write_data == read_data);
delete[] scratch;
}
TEST_F(EnvLibradosTest, Truncate) {
const size_t kWriteSize = 300 * 1024;
const size_t truncSize = 1024;
std::string write_data;
for (size_t i = 0; i < kWriteSize; ++i) {
write_data.append(1, 'h');
}
std::unique_ptr<WritableFile> writable_file;
ASSERT_OK(env_->CreateDir("/dir"));
ASSERT_OK(env_->NewWritableFile("/dir/g", &writable_file, soptions_));
ASSERT_OK(writable_file->Append(write_data));
ASSERT_EQ(writable_file->GetFileSize(), kWriteSize);
ASSERT_OK(writable_file->Truncate(truncSize));
ASSERT_EQ(writable_file->GetFileSize(), truncSize);
writable_file.reset();
}
TEST_F(EnvLibradosTest, DBBasics) {
std::string kDBPath = "/tmp/DBBasics";
DB* db;
Options options;
// Optimize RocksDB. This is the easiest way to get RocksDB to perform well
options.IncreaseParallelism();
options.OptimizeLevelStyleCompaction();
// create the DB if it's not already present
options.create_if_missing = true;
options.env = env_;
// open DB
Status s = DB::Open(options, kDBPath, &db);
assert(s.ok());
// Put key-value
s = db->Put(WriteOptions(), "key1", "value");
assert(s.ok());
std::string value;
// get value
s = db->Get(ReadOptions(), "key1", &value);
assert(s.ok());
assert(value == "value");
// atomically apply a set of updates
{
WriteBatch batch;
batch.Delete("key1");
batch.Put("key2", value);
s = db->Write(WriteOptions(), &batch);
}
s = db->Get(ReadOptions(), "key1", &value);
assert(s.IsNotFound());
db->Get(ReadOptions(), "key2", &value);
assert(value == "value");
delete db;
}
TEST_F(EnvLibradosTest, DBLoadKeysInRandomOrder) {
char key[20] = {0}, value[20] = {0};
int max_loop = 1 << 10;
Timer timer(false);
std::cout << "Test size : loop(" << max_loop << ")" << std::endl;
/**********************************
use default env
***********************************/
std::string kDBPath1 = "/tmp/DBLoadKeysInRandomOrder1";
DB* db1;
Options options1;
// Optimize Rocksdb. This is the easiest way to get RocksDB to perform well
options1.IncreaseParallelism();
options1.OptimizeLevelStyleCompaction();
// create the DB if it's not already present
options1.create_if_missing = true;
// open DB
Status s1 = DB::Open(options1, kDBPath1, &db1);
assert(s1.ok());
ROCKSDB_NAMESPACE::Random64 r1(time(nullptr));
timer.Reset();
for (int i = 0; i < max_loop; ++i) {
snprintf(key,
20,
"%16lx",
(unsigned long)r1.Uniform(std::numeric_limits<uint64_t>::max()));
snprintf(value,
20,
"%16lx",
(unsigned long)r1.Uniform(std::numeric_limits<uint64_t>::max()));
// Put key-value
s1 = db1->Put(WriteOptions(), key, value);
assert(s1.ok());
}
std::cout << "Time by default : " << timer << "ms" << std::endl;
delete db1;
/**********************************
use librados env
***********************************/
std::string kDBPath2 = "/tmp/DBLoadKeysInRandomOrder2";
DB* db2;
Options options2;
// Optimize RocksDB. This is the easiest way to get RocksDB to perform well
options2.IncreaseParallelism();
options2.OptimizeLevelStyleCompaction();
// create the DB if it's not already present
options2.create_if_missing = true;
options2.env = env_;
// open DB
Status s2 = DB::Open(options2, kDBPath2, &db2);
assert(s2.ok());
ROCKSDB_NAMESPACE::Random64 r2(time(nullptr));
timer.Reset();
for (int i = 0; i < max_loop; ++i) {
snprintf(key,
20,
"%16lx",
(unsigned long)r2.Uniform(std::numeric_limits<uint64_t>::max()));
snprintf(value,
20,
"%16lx",
(unsigned long)r2.Uniform(std::numeric_limits<uint64_t>::max()));
// Put key-value
s2 = db2->Put(WriteOptions(), key, value);
assert(s2.ok());
}
std::cout << "Time by librados : " << timer << "ms" << std::endl;
delete db2;
}
TEST_F(EnvLibradosTest, DBBulkLoadKeysInRandomOrder) {
char key[20] = {0}, value[20] = {0};
int max_loop = 1 << 6;
int bulk_size = 1 << 15;
Timer timer(false);
std::cout << "Test size : loop(" << max_loop << "); bulk_size(" << bulk_size << ")" << std::endl;
/**********************************
use default env
***********************************/
std::string kDBPath1 = "/tmp/DBBulkLoadKeysInRandomOrder1";
DB* db1;
Options options1;
// Optimize Rocksdb. This is the easiest way to get RocksDB to perform well
options1.IncreaseParallelism();
options1.OptimizeLevelStyleCompaction();
// create the DB if it's not already present
options1.create_if_missing = true;
// open DB
Status s1 = DB::Open(options1, kDBPath1, &db1);
assert(s1.ok());
ROCKSDB_NAMESPACE::Random64 r1(time(nullptr));
timer.Reset();
for (int i = 0; i < max_loop; ++i) {
WriteBatch batch;
for (int j = 0; j < bulk_size; ++j) {
snprintf(key,
20,
"%16lx",
(unsigned long)r1.Uniform(std::numeric_limits<uint64_t>::max()));
snprintf(value,
20,
"%16lx",
(unsigned long)r1.Uniform(std::numeric_limits<uint64_t>::max()));
batch.Put(key, value);
}
s1 = db1->Write(WriteOptions(), &batch);
assert(s1.ok());
}
std::cout << "Time by default : " << timer << "ms" << std::endl;
delete db1;
/**********************************
use librados env
***********************************/
std::string kDBPath2 = "/tmp/DBBulkLoadKeysInRandomOrder2";
DB* db2;
Options options2;
// Optimize RocksDB. This is the easiest way to get RocksDB to perform well
options2.IncreaseParallelism();
options2.OptimizeLevelStyleCompaction();
// create the DB if it's not already present
options2.create_if_missing = true;
options2.env = env_;
// open DB
Status s2 = DB::Open(options2, kDBPath2, &db2);
assert(s2.ok());
ROCKSDB_NAMESPACE::Random64 r2(time(nullptr));
timer.Reset();
for (int i = 0; i < max_loop; ++i) {
WriteBatch batch;
for (int j = 0; j < bulk_size; ++j) {
snprintf(key,
20,
"%16lx",
(unsigned long)r2.Uniform(std::numeric_limits<uint64_t>::max()));
snprintf(value,
20,
"%16lx",
(unsigned long)r2.Uniform(std::numeric_limits<uint64_t>::max()));
batch.Put(key, value);
}
s2 = db2->Write(WriteOptions(), &batch);
assert(s2.ok());
}
std::cout << "Time by librados : " << timer << "ms" << std::endl;
delete db2;
}
TEST_F(EnvLibradosTest, DBBulkLoadKeysInSequentialOrder) {
char key[20] = {0}, value[20] = {0};
int max_loop = 1 << 6;
int bulk_size = 1 << 15;
Timer timer(false);
std::cout << "Test size : loop(" << max_loop << "); bulk_size(" << bulk_size << ")" << std::endl;
/**********************************
use default env
***********************************/
std::string kDBPath1 = "/tmp/DBBulkLoadKeysInSequentialOrder1";
DB* db1;
Options options1;
// Optimize Rocksdb. This is the easiest way to get RocksDB to perform well
options1.IncreaseParallelism();
options1.OptimizeLevelStyleCompaction();
// create the DB if it's not already present
options1.create_if_missing = true;
// open DB
Status s1 = DB::Open(options1, kDBPath1, &db1);
assert(s1.ok());
ROCKSDB_NAMESPACE::Random64 r1(time(nullptr));
timer.Reset();
for (int i = 0; i < max_loop; ++i) {
WriteBatch batch;
for (int j = 0; j < bulk_size; ++j) {
snprintf(key,
20,
"%019lld",
(long long)(i * bulk_size + j));
snprintf(value,
20,
"%16lx",
(unsigned long)r1.Uniform(std::numeric_limits<uint64_t>::max()));
batch.Put(key, value);
}
s1 = db1->Write(WriteOptions(), &batch);
assert(s1.ok());
}
std::cout << "Time by default : " << timer << "ms" << std::endl;
delete db1;
/**********************************
use librados env
***********************************/
std::string kDBPath2 = "/tmp/DBBulkLoadKeysInSequentialOrder2";
DB* db2;
Options options2;
// Optimize RocksDB. This is the easiest way to get RocksDB to perform well
options2.IncreaseParallelism();
options2.OptimizeLevelStyleCompaction();
// create the DB if it's not already present
options2.create_if_missing = true;
options2.env = env_;
// open DB
Status s2 = DB::Open(options2, kDBPath2, &db2);
assert(s2.ok());
ROCKSDB_NAMESPACE::Random64 r2(time(nullptr));
timer.Reset();
for (int i = 0; i < max_loop; ++i) {
WriteBatch batch;
for (int j = 0; j < bulk_size; ++j) {
snprintf(key,
20,
"%16lx",
(unsigned long)r2.Uniform(std::numeric_limits<uint64_t>::max()));
snprintf(value,
20,
"%16lx",
(unsigned long)r2.Uniform(std::numeric_limits<uint64_t>::max()));
batch.Put(key, value);
}
s2 = db2->Write(WriteOptions(), &batch);
assert(s2.ok());
}
std::cout << "Time by librados : " << timer << "ms" << std::endl;
delete db2;
}
TEST_F(EnvLibradosTest, DBRandomRead) {
char key[20] = {0}, value[20] = {0};
int max_loop = 1 << 6;
int bulk_size = 1 << 10;
int read_loop = 1 << 20;
Timer timer(false);
std::cout << "Test size : keys_num(" << max_loop << ", " << bulk_size << "); read_loop(" << read_loop << ")" << std::endl;
/**********************************
use default env
***********************************/
std::string kDBPath1 = "/tmp/DBRandomRead1";
DB* db1;
Options options1;
// Optimize Rocksdb. This is the easiest way to get RocksDB to perform well
options1.IncreaseParallelism();
options1.OptimizeLevelStyleCompaction();
// create the DB if it's not already present
options1.create_if_missing = true;
// open DB
Status s1 = DB::Open(options1, kDBPath1, &db1);
assert(s1.ok());
ROCKSDB_NAMESPACE::Random64 r1(time(nullptr));
for (int i = 0; i < max_loop; ++i) {
WriteBatch batch;
for (int j = 0; j < bulk_size; ++j) {
snprintf(key,
20,
"%019lld",
(long long)(i * bulk_size + j));
snprintf(value,
20,
"%16lx",
(unsigned long)r1.Uniform(std::numeric_limits<uint64_t>::max()));
batch.Put(key, value);
}
s1 = db1->Write(WriteOptions(), &batch);
assert(s1.ok());
}
timer.Reset();
int base1 = 0, offset1 = 0;
for (int i = 0; i < read_loop; ++i) {
base1 = r1.Uniform(max_loop);
offset1 = r1.Uniform(bulk_size);
std::string value1;
snprintf(key,
20,
"%019lld",
(long long)(base1 * bulk_size + offset1));
s1 = db1->Get(ReadOptions(), key, &value1);
assert(s1.ok());
}
std::cout << "Time by default : " << timer << "ms" << std::endl;
delete db1;
/**********************************
use librados env
***********************************/
std::string kDBPath2 = "/tmp/DBRandomRead2";
DB* db2;
Options options2;
// Optimize RocksDB. This is the easiest way to get RocksDB to perform well
options2.IncreaseParallelism();
options2.OptimizeLevelStyleCompaction();
// create the DB if it's not already present
options2.create_if_missing = true;
options2.env = env_;
// open DB
Status s2 = DB::Open(options2, kDBPath2, &db2);
assert(s2.ok());
ROCKSDB_NAMESPACE::Random64 r2(time(nullptr));
for (int i = 0; i < max_loop; ++i) {
WriteBatch batch;
for (int j = 0; j < bulk_size; ++j) {
snprintf(key,
20,
"%019lld",
(long long)(i * bulk_size + j));
snprintf(value,
20,
"%16lx",
(unsigned long)r2.Uniform(std::numeric_limits<uint64_t>::max()));
batch.Put(key, value);
}
s2 = db2->Write(WriteOptions(), &batch);
assert(s2.ok());
}
timer.Reset();
int base2 = 0, offset2 = 0;
for (int i = 0; i < read_loop; ++i) {
base2 = r2.Uniform(max_loop);
offset2 = r2.Uniform(bulk_size);
std::string value2;
snprintf(key,
20,
"%019lld",
(long long)(base2 * bulk_size + offset2));
s2 = db2->Get(ReadOptions(), key, &value2);
if (!s2.ok()) {
std::cout << s2.ToString() << std::endl;
}
assert(s2.ok());
}
std::cout << "Time by librados : " << timer << "ms" << std::endl;
delete db2;
}
class EnvLibradosMutipoolTest : public testing::Test {
public:
// we will use all of these below
const std::string client_name = "client.admin";
const std::string cluster_name = "ceph";
const uint64_t flags = 0;
const std::string db_name = "env_librados_test_db";
const std::string db_pool = db_name + "_pool";
const std::string wal_dir = "/wal";
const std::string wal_pool = db_name + "_wal_pool";
const size_t write_buffer_size = 1 << 20;
const char *keyring = "admin";
const char *config = "../ceph/src/ceph.conf";
EnvLibrados* env_;
const EnvOptions soptions_;
EnvLibradosMutipoolTest() {
env_ = new EnvLibrados(client_name, cluster_name, flags, db_name, config, db_pool, wal_dir, wal_pool, write_buffer_size);
}
~EnvLibradosMutipoolTest() {
delete env_;
librados::Rados rados;
int ret = 0;
do {
ret = rados.init("admin"); // just use the client.admin keyring
if (ret < 0) { // let's handle any error that might have come back
std::cerr << "couldn't initialize rados! error " << ret << std::endl;
ret = EXIT_FAILURE;
break;
}
ret = rados.conf_read_file(config);
if (ret < 0) {
// This could fail if the config file is malformed, but it'd be hard.
std::cerr << "failed to parse config file " << config
<< "! error" << ret << std::endl;
ret = EXIT_FAILURE;
break;
}
/*
* next, we actually connect to the cluster
*/
ret = rados.connect();
if (ret < 0) {
std::cerr << "couldn't connect to cluster! error " << ret << std::endl;
ret = EXIT_FAILURE;
break;
}
/*
* And now we're done, so let's remove our pool and then
* shut down the connection gracefully.
*/
int delete_ret = rados.pool_delete(db_pool.c_str());
if (delete_ret < 0) {
// be careful not to
std::cerr << "We failed to delete our test pool!" << db_pool << delete_ret << std::endl;
ret = EXIT_FAILURE;
}
delete_ret = rados.pool_delete(wal_pool.c_str());
if (delete_ret < 0) {
// be careful not to
std::cerr << "We failed to delete our test pool!" << wal_pool << delete_ret << std::endl;
ret = EXIT_FAILURE;
}
} while (0);
}
};
TEST_F(EnvLibradosMutipoolTest, Basics) {
uint64_t file_size;
std::unique_ptr<WritableFile> writable_file;
std::vector<std::string> children;
std::vector<std::string> v = {"/tmp/dir1", "/tmp/dir2", "/tmp/dir3", "/tmp/dir4", "dir"};
for (size_t i = 0; i < v.size(); ++i) {
std::string dir = v[i];
std::string dir_non_existent = dir + "/non_existent";
std::string dir_f = dir + "/f";
std::string dir_g = dir + "/g";
ASSERT_OK(env_->CreateDir(dir.c_str()));
// Check that the directory is empty.
ASSERT_EQ(Status::NotFound(), env_->FileExists(dir_non_existent.c_str()));
ASSERT_TRUE(!env_->GetFileSize(dir_non_existent.c_str(), &file_size).ok());
ASSERT_OK(env_->GetChildren(dir.c_str(), &children));
ASSERT_EQ(0U, children.size());
// Create a file.
ASSERT_OK(env_->NewWritableFile(dir_f.c_str(), &writable_file, soptions_));
writable_file.reset();
// Check that the file exists.
ASSERT_OK(env_->FileExists(dir_f.c_str()));
ASSERT_OK(env_->GetFileSize(dir_f.c_str(), &file_size));
ASSERT_EQ(0U, file_size);
ASSERT_OK(env_->GetChildren(dir.c_str(), &children));
ASSERT_EQ(1U, children.size());
ASSERT_EQ("f", children[0]);
// Write to the file.
ASSERT_OK(env_->NewWritableFile(dir_f.c_str(), &writable_file, soptions_));
ASSERT_OK(writable_file->Append("abc"));
writable_file.reset();
// Check for expected size.
ASSERT_OK(env_->GetFileSize(dir_f.c_str(), &file_size));
ASSERT_EQ(3U, file_size);
// Check that renaming works.
ASSERT_TRUE(!env_->RenameFile(dir_non_existent.c_str(), dir_g.c_str()).ok());
ASSERT_OK(env_->RenameFile(dir_f.c_str(), dir_g.c_str()));
ASSERT_EQ(Status::NotFound(), env_->FileExists(dir_f.c_str()));
ASSERT_OK(env_->FileExists(dir_g.c_str()));
ASSERT_OK(env_->GetFileSize(dir_g.c_str(), &file_size));
ASSERT_EQ(3U, file_size);
// Check that opening non-existent file fails.
std::unique_ptr<SequentialFile> seq_file;
std::unique_ptr<RandomAccessFile> rand_file;
ASSERT_TRUE(
!env_->NewSequentialFile(dir_non_existent.c_str(), &seq_file, soptions_).ok());
ASSERT_TRUE(!seq_file);
ASSERT_TRUE(!env_->NewRandomAccessFile(dir_non_existent.c_str(), &rand_file,
soptions_).ok());
ASSERT_TRUE(!rand_file);
// Check that deleting works.
ASSERT_TRUE(!env_->DeleteFile(dir_non_existent.c_str()).ok());
ASSERT_OK(env_->DeleteFile(dir_g.c_str()));
ASSERT_EQ(Status::NotFound(), env_->FileExists(dir_g.c_str()));
ASSERT_OK(env_->GetChildren(dir.c_str(), &children));
ASSERT_EQ(0U, children.size());
ASSERT_OK(env_->DeleteDir(dir.c_str()));
}
}
TEST_F(EnvLibradosMutipoolTest, DBBasics) {
std::string kDBPath = "/tmp/DBBasics";
std::string walPath = "/tmp/wal";
DB* db;
Options options;
// Optimize RocksDB. This is the easiest way to get RocksDB to perform well
options.IncreaseParallelism();
options.OptimizeLevelStyleCompaction();
// create the DB if it's not already present
options.create_if_missing = true;
options.env = env_;
options.wal_dir = walPath;
// open DB
Status s = DB::Open(options, kDBPath, &db);
assert(s.ok());
// Put key-value
s = db->Put(WriteOptions(), "key1", "value");
assert(s.ok());
std::string value;
// get value
s = db->Get(ReadOptions(), "key1", &value);
assert(s.ok());
assert(value == "value");
// atomically apply a set of updates
{
WriteBatch batch;
batch.Delete("key1");
batch.Put("key2", value);
s = db->Write(WriteOptions(), &batch);
}
s = db->Get(ReadOptions(), "key1", &value);
assert(s.IsNotFound());
db->Get(ReadOptions(), "key2", &value);
assert(value == "value");
delete db;
}
TEST_F(EnvLibradosMutipoolTest, DBBulkLoadKeysInRandomOrder) {
char key[20] = {0}, value[20] = {0};
int max_loop = 1 << 6;
int bulk_size = 1 << 15;
Timer timer(false);
std::cout << "Test size : loop(" << max_loop << "); bulk_size(" << bulk_size << ")" << std::endl;
/**********************************
use default env
***********************************/
std::string kDBPath1 = "/tmp/DBBulkLoadKeysInRandomOrder1";
std::string walPath = "/tmp/wal";
DB* db1;
Options options1;
// Optimize Rocksdb. This is the easiest way to get RocksDB to perform well
options1.IncreaseParallelism();
options1.OptimizeLevelStyleCompaction();
// create the DB if it's not already present
options1.create_if_missing = true;
// open DB
Status s1 = DB::Open(options1, kDBPath1, &db1);
assert(s1.ok());
ROCKSDB_NAMESPACE::Random64 r1(time(nullptr));
timer.Reset();
for (int i = 0; i < max_loop; ++i) {
WriteBatch batch;
for (int j = 0; j < bulk_size; ++j) {
snprintf(key,
20,
"%16lx",
(unsigned long)r1.Uniform(std::numeric_limits<uint64_t>::max()));
snprintf(value,
20,
"%16lx",
(unsigned long)r1.Uniform(std::numeric_limits<uint64_t>::max()));
batch.Put(key, value);
}
s1 = db1->Write(WriteOptions(), &batch);
assert(s1.ok());
}
std::cout << "Time by default : " << timer << "ms" << std::endl;
delete db1;
/**********************************
use librados env
***********************************/
std::string kDBPath2 = "/tmp/DBBulkLoadKeysInRandomOrder2";
DB* db2;
Options options2;
// Optimize RocksDB. This is the easiest way to get RocksDB to perform well
options2.IncreaseParallelism();
options2.OptimizeLevelStyleCompaction();
// create the DB if it's not already present
options2.create_if_missing = true;
options2.env = env_;
options2.wal_dir = walPath;
// open DB
Status s2 = DB::Open(options2, kDBPath2, &db2);
if (!s2.ok()) {
std::cerr << s2.ToString() << std::endl;
}
assert(s2.ok());
ROCKSDB_NAMESPACE::Random64 r2(time(nullptr));
timer.Reset();
for (int i = 0; i < max_loop; ++i) {
WriteBatch batch;
for (int j = 0; j < bulk_size; ++j) {
snprintf(key,
20,
"%16lx",
(unsigned long)r2.Uniform(std::numeric_limits<uint64_t>::max()));
snprintf(value,
20,
"%16lx",
(unsigned long)r2.Uniform(std::numeric_limits<uint64_t>::max()));
batch.Put(key, value);
}
s2 = db2->Write(WriteOptions(), &batch);
assert(s2.ok());
}
std::cout << "Time by librados : " << timer << "ms" << std::endl;
delete db2;
}
TEST_F(EnvLibradosMutipoolTest, DBTransactionDB) {
std::string kDBPath = "/tmp/DBTransactionDB";
// open DB
Options options;
TransactionDBOptions txn_db_options;
options.create_if_missing = true;
options.env = env_;
TransactionDB* txn_db;
Status s = TransactionDB::Open(options, txn_db_options, kDBPath, &txn_db);
assert(s.ok());
WriteOptions write_options;
ReadOptions read_options;
TransactionOptions txn_options;
std::string value;
////////////////////////////////////////////////////////
//
// Simple OptimisticTransaction Example ("Read Committed")
//
////////////////////////////////////////////////////////
// Start a transaction
Transaction* txn = txn_db->BeginTransaction(write_options);
assert(txn);
// Read a key in this transaction
s = txn->Get(read_options, "abc", &value);
assert(s.IsNotFound());
// Write a key in this transaction
s = txn->Put("abc", "def");
assert(s.ok());
// Read a key OUTSIDE this transaction. Does not affect txn.
s = txn_db->Get(read_options, "abc", &value);
// Write a key OUTSIDE of this transaction.
// Does not affect txn since this is an unrelated key. If we wrote key 'abc'
// here, the transaction would fail to commit.
s = txn_db->Put(write_options, "xyz", "zzz");
// Commit transaction
s = txn->Commit();
assert(s.ok());
delete txn;
////////////////////////////////////////////////////////
//
// "Repeatable Read" (Snapshot Isolation) Example
// -- Using a single Snapshot
//
////////////////////////////////////////////////////////
// Set a snapshot at start of transaction by setting set_snapshot=true
txn_options.set_snapshot = true;
txn = txn_db->BeginTransaction(write_options, txn_options);
const Snapshot* snapshot = txn->GetSnapshot();
// Write a key OUTSIDE of transaction
s = txn_db->Put(write_options, "abc", "xyz");
assert(s.ok());
// Attempt to read a key using the snapshot. This will fail since
// the previous write outside this txn conflicts with this read.
read_options.snapshot = snapshot;
s = txn->GetForUpdate(read_options, "abc", &value);
assert(s.IsBusy());
txn->Rollback();
delete txn;
// Clear snapshot from read options since it is no longer valid
read_options.snapshot = nullptr;
snapshot = nullptr;
////////////////////////////////////////////////////////
//
// "Read Committed" (Monotonic Atomic Views) Example
// --Using multiple Snapshots
//
////////////////////////////////////////////////////////
// In this example, we set the snapshot multiple times. This is probably
// only necessary if you have very strict isolation requirements to
// implement.
// Set a snapshot at start of transaction
txn_options.set_snapshot = true;
txn = txn_db->BeginTransaction(write_options, txn_options);
// Do some reads and writes to key "x"
read_options.snapshot = txn_db->GetSnapshot();
s = txn->Get(read_options, "x", &value);
txn->Put("x", "x");
// Do a write outside of the transaction to key "y"
s = txn_db->Put(write_options, "y", "y");
// Set a new snapshot in the transaction
txn->SetSnapshot();
txn->SetSavePoint();
read_options.snapshot = txn_db->GetSnapshot();
// Do some reads and writes to key "y"
// Since the snapshot was advanced, the write done outside of the
// transaction does not conflict.
s = txn->GetForUpdate(read_options, "y", &value);
txn->Put("y", "y");
// Decide we want to revert the last write from this transaction.
txn->RollbackToSavePoint();
// Commit.
s = txn->Commit();
assert(s.ok());
delete txn;
// Clear snapshot from read options since it is no longer valid
read_options.snapshot = nullptr;
// Cleanup
delete txn_db;
DestroyDB(kDBPath, options);
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
#else
#include <stdio.h>
int main(int argc, char** argv) {
fprintf(stderr, "SKIPPED as EnvMirror is not supported in ROCKSDB_LITE\n");
return 0;
}
#endif // !ROCKSDB_LITE