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rocksdb/db/blob/blob_file_builder_test.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).
#include "db/blob/blob_file_builder.h"
#include <cassert>
#include <cinttypes>
#include <string>
#include <utility>
#include <vector>
#include "db/blob/blob_file_addition.h"
#include "db/blob/blob_index.h"
#include "db/blob/blob_log_format.h"
#include "db/blob/blob_log_reader.h"
#include "env/composite_env_wrapper.h"
#include "env/mock_env.h"
#include "file/filename.h"
#include "file/random_access_file_reader.h"
#include "options/cf_options.h"
#include "rocksdb/env.h"
#include "rocksdb/file_checksum.h"
#include "rocksdb/options.h"
#include "test_util/sync_point.h"
#include "test_util/testharness.h"
#include "util/compression.h"
#include "utilities/fault_injection_env.h"
namespace ROCKSDB_NAMESPACE {
class TestFileNumberGenerator {
public:
uint64_t operator()() { return ++next_file_number_; }
private:
uint64_t next_file_number_ = 1;
};
class BlobFileBuilderTest : public testing::Test {
protected:
BlobFileBuilderTest() : mock_env_(Env::Default()), fs_(&mock_env_) {}
void VerifyBlobFile(uint64_t blob_file_number,
const std::string& blob_file_path,
uint32_t column_family_id,
CompressionType blob_compression_type,
const std::vector<std::pair<std::string, std::string>>&
expected_key_value_pairs,
const std::vector<std::string>& blob_indexes) {
assert(expected_key_value_pairs.size() == blob_indexes.size());
std::unique_ptr<FSRandomAccessFile> file;
constexpr IODebugContext* dbg = nullptr;
ASSERT_OK(
fs_.NewRandomAccessFile(blob_file_path, file_options_, &file, dbg));
std::unique_ptr<RandomAccessFileReader> file_reader(
new RandomAccessFileReader(std::move(file), blob_file_path,
&mock_env_));
constexpr Statistics* statistics = nullptr;
BlobLogReader blob_log_reader(std::move(file_reader), &mock_env_,
statistics);
BlobLogHeader header;
ASSERT_OK(blob_log_reader.ReadHeader(&header));
ASSERT_EQ(header.version, kVersion1);
ASSERT_EQ(header.column_family_id, column_family_id);
ASSERT_EQ(header.compression, blob_compression_type);
ASSERT_FALSE(header.has_ttl);
ASSERT_EQ(header.expiration_range, ExpirationRange());
for (size_t i = 0; i < expected_key_value_pairs.size(); ++i) {
BlobLogRecord record;
uint64_t blob_offset = 0;
ASSERT_OK(blob_log_reader.ReadRecord(
&record, BlobLogReader::kReadHeaderKeyBlob, &blob_offset));
// Check the contents of the blob file
const auto& expected_key_value = expected_key_value_pairs[i];
const auto& key = expected_key_value.first;
const auto& value = expected_key_value.second;
ASSERT_EQ(record.key_size, key.size());
ASSERT_EQ(record.value_size, value.size());
ASSERT_EQ(record.expiration, 0);
ASSERT_EQ(record.key, key);
ASSERT_EQ(record.value, value);
// Make sure the blob reference returned by the builder points to the
// right place
BlobIndex blob_index;
ASSERT_OK(blob_index.DecodeFrom(blob_indexes[i]));
ASSERT_FALSE(blob_index.IsInlined());
ASSERT_FALSE(blob_index.HasTTL());
ASSERT_EQ(blob_index.file_number(), blob_file_number);
ASSERT_EQ(blob_index.offset(), blob_offset);
ASSERT_EQ(blob_index.size(), value.size());
}
BlobLogFooter footer;
ASSERT_OK(blob_log_reader.ReadFooter(&footer));
ASSERT_EQ(footer.blob_count, expected_key_value_pairs.size());
ASSERT_EQ(footer.expiration_range, ExpirationRange());
}
MockEnv mock_env_;
LegacyFileSystemWrapper fs_;
FileOptions file_options_;
};
TEST_F(BlobFileBuilderTest, BuildAndCheckOneFile) {
// Build a single blob file
constexpr size_t number_of_blobs = 10;
constexpr size_t key_size = 1;
constexpr size_t value_size = 4;
constexpr size_t value_offset = 1234;
Options options;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_,
"BlobFileBuilderTest_BuildAndCheckOneFile"),
0);
options.enable_blob_files = true;
ImmutableCFOptions immutable_cf_options(options);
MutableCFOptions mutable_cf_options(options);
constexpr int job_id = 1;
constexpr uint32_t column_family_id = 123;
constexpr char column_family_name[] = "foobar";
constexpr Env::IOPriority io_priority = Env::IO_HIGH;
constexpr Env::WriteLifeTimeHint write_hint = Env::WLTH_MEDIUM;
std::vector<std::string> blob_file_paths;
std::vector<BlobFileAddition> blob_file_additions;
BlobFileBuilder builder(TestFileNumberGenerator(), &mock_env_, &fs_,
&immutable_cf_options, &mutable_cf_options,
&file_options_, job_id, column_family_id,
column_family_name, io_priority, write_hint,
&blob_file_paths, &blob_file_additions);
std::vector<std::pair<std::string, std::string>> expected_key_value_pairs(
number_of_blobs);
std::vector<std::string> blob_indexes(number_of_blobs);
for (size_t i = 0; i < number_of_blobs; ++i) {
auto& expected_key_value = expected_key_value_pairs[i];
auto& key = expected_key_value.first;
key = std::to_string(i);
assert(key.size() == key_size);
auto& value = expected_key_value.second;
value = std::to_string(i + value_offset);
assert(value.size() == value_size);
auto& blob_index = blob_indexes[i];
ASSERT_OK(builder.Add(key, value, &blob_index));
ASSERT_FALSE(blob_index.empty());
}
ASSERT_OK(builder.Finish());
// Check the metadata generated
constexpr uint64_t blob_file_number = 2;
ASSERT_EQ(blob_file_paths.size(), 1);
const std::string& blob_file_path = blob_file_paths[0];
ASSERT_EQ(blob_file_path,
BlobFileName(immutable_cf_options.cf_paths.front().path,
blob_file_number));
ASSERT_EQ(blob_file_additions.size(), 1);
const auto& blob_file_addition = blob_file_additions[0];
ASSERT_EQ(blob_file_addition.GetBlobFileNumber(), blob_file_number);
ASSERT_EQ(blob_file_addition.GetTotalBlobCount(), number_of_blobs);
ASSERT_EQ(
blob_file_addition.GetTotalBlobBytes(),
number_of_blobs * (BlobLogRecord::kHeaderSize + key_size + value_size));
// Verify the contents of the new blob file as well as the blob references
VerifyBlobFile(blob_file_number, blob_file_path, column_family_id,
kNoCompression, expected_key_value_pairs, blob_indexes);
}
TEST_F(BlobFileBuilderTest, BuildAndCheckMultipleFiles) {
// Build multiple blob files: file size limit is set to the size of a single
// value, so each blob ends up in a file of its own
constexpr size_t number_of_blobs = 10;
constexpr size_t key_size = 1;
constexpr size_t value_size = 10;
constexpr size_t value_offset = 1234567890;
Options options;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_,
"BlobFileBuilderTest_BuildAndCheckMultipleFiles"),
0);
options.enable_blob_files = true;
options.blob_file_size = value_size;
ImmutableCFOptions immutable_cf_options(options);
MutableCFOptions mutable_cf_options(options);
constexpr int job_id = 1;
constexpr uint32_t column_family_id = 123;
constexpr char column_family_name[] = "foobar";
constexpr Env::IOPriority io_priority = Env::IO_HIGH;
constexpr Env::WriteLifeTimeHint write_hint = Env::WLTH_MEDIUM;
std::vector<std::string> blob_file_paths;
std::vector<BlobFileAddition> blob_file_additions;
BlobFileBuilder builder(TestFileNumberGenerator(), &mock_env_, &fs_,
&immutable_cf_options, &mutable_cf_options,
&file_options_, job_id, column_family_id,
column_family_name, io_priority, write_hint,
&blob_file_paths, &blob_file_additions);
std::vector<std::pair<std::string, std::string>> expected_key_value_pairs(
number_of_blobs);
std::vector<std::string> blob_indexes(number_of_blobs);
for (size_t i = 0; i < number_of_blobs; ++i) {
auto& expected_key_value = expected_key_value_pairs[i];
auto& key = expected_key_value.first;
key = std::to_string(i);
assert(key.size() == key_size);
auto& value = expected_key_value.second;
value = std::to_string(i + value_offset);
assert(value.size() == value_size);
auto& blob_index = blob_indexes[i];
ASSERT_OK(builder.Add(key, value, &blob_index));
ASSERT_FALSE(blob_index.empty());
}
ASSERT_OK(builder.Finish());
// Check the metadata generated
ASSERT_EQ(blob_file_paths.size(), number_of_blobs);
ASSERT_EQ(blob_file_additions.size(), number_of_blobs);
for (size_t i = 0; i < number_of_blobs; ++i) {
const uint64_t blob_file_number = i + 2;
ASSERT_EQ(blob_file_paths[i],
BlobFileName(immutable_cf_options.cf_paths.front().path,
blob_file_number));
const auto& blob_file_addition = blob_file_additions[i];
ASSERT_EQ(blob_file_addition.GetBlobFileNumber(), blob_file_number);
ASSERT_EQ(blob_file_addition.GetTotalBlobCount(), 1);
ASSERT_EQ(blob_file_addition.GetTotalBlobBytes(),
BlobLogRecord::kHeaderSize + key_size + value_size);
}
// Verify the contents of the new blob files as well as the blob references
for (size_t i = 0; i < number_of_blobs; ++i) {
std::vector<std::pair<std::string, std::string>> expected_key_value_pair{
expected_key_value_pairs[i]};
std::vector<std::string> blob_index{blob_indexes[i]};
VerifyBlobFile(i + 2, blob_file_paths[i], column_family_id, kNoCompression,
expected_key_value_pair, blob_index);
}
}
TEST_F(BlobFileBuilderTest, InlinedValues) {
// All values are below the min_blob_size threshold; no blob files get written
constexpr size_t number_of_blobs = 10;
constexpr size_t key_size = 1;
constexpr size_t value_size = 10;
constexpr size_t value_offset = 1234567890;
Options options;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_, "BlobFileBuilderTest_InlinedValues"),
0);
options.enable_blob_files = true;
options.min_blob_size = 1024;
ImmutableCFOptions immutable_cf_options(options);
MutableCFOptions mutable_cf_options(options);
constexpr int job_id = 1;
constexpr uint32_t column_family_id = 123;
constexpr char column_family_name[] = "foobar";
constexpr Env::IOPriority io_priority = Env::IO_HIGH;
constexpr Env::WriteLifeTimeHint write_hint = Env::WLTH_MEDIUM;
std::vector<std::string> blob_file_paths;
std::vector<BlobFileAddition> blob_file_additions;
BlobFileBuilder builder(TestFileNumberGenerator(), &mock_env_, &fs_,
&immutable_cf_options, &mutable_cf_options,
&file_options_, job_id, column_family_id,
column_family_name, io_priority, write_hint,
&blob_file_paths, &blob_file_additions);
for (size_t i = 0; i < number_of_blobs; ++i) {
const std::string key = std::to_string(i);
assert(key.size() == key_size);
const std::string value = std::to_string(i + value_offset);
assert(value.size() == value_size);
std::string blob_index;
ASSERT_OK(builder.Add(key, value, &blob_index));
ASSERT_TRUE(blob_index.empty());
}
ASSERT_OK(builder.Finish());
// Check the metadata generated
ASSERT_TRUE(blob_file_paths.empty());
ASSERT_TRUE(blob_file_additions.empty());
}
TEST_F(BlobFileBuilderTest, Compression) {
// Build a blob file with a compressed blob
if (!Snappy_Supported()) {
return;
}
constexpr size_t key_size = 1;
constexpr size_t value_size = 100;
Options options;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_, "BlobFileBuilderTest_Compression"), 0);
options.enable_blob_files = true;
options.blob_compression_type = kSnappyCompression;
ImmutableCFOptions immutable_cf_options(options);
MutableCFOptions mutable_cf_options(options);
constexpr int job_id = 1;
constexpr uint32_t column_family_id = 123;
constexpr char column_family_name[] = "foobar";
constexpr Env::IOPriority io_priority = Env::IO_HIGH;
constexpr Env::WriteLifeTimeHint write_hint = Env::WLTH_MEDIUM;
std::vector<std::string> blob_file_paths;
std::vector<BlobFileAddition> blob_file_additions;
BlobFileBuilder builder(TestFileNumberGenerator(), &mock_env_, &fs_,
&immutable_cf_options, &mutable_cf_options,
&file_options_, job_id, column_family_id,
column_family_name, io_priority, write_hint,
&blob_file_paths, &blob_file_additions);
const std::string key("1");
const std::string uncompressed_value(value_size, 'x');
std::string blob_index;
ASSERT_OK(builder.Add(key, uncompressed_value, &blob_index));
ASSERT_FALSE(blob_index.empty());
ASSERT_OK(builder.Finish());
// Check the metadata generated
constexpr uint64_t blob_file_number = 2;
ASSERT_EQ(blob_file_paths.size(), 1);
const std::string& blob_file_path = blob_file_paths[0];
ASSERT_EQ(blob_file_path,
BlobFileName(immutable_cf_options.cf_paths.front().path,
blob_file_number));
ASSERT_EQ(blob_file_additions.size(), 1);
const auto& blob_file_addition = blob_file_additions[0];
ASSERT_EQ(blob_file_addition.GetBlobFileNumber(), blob_file_number);
ASSERT_EQ(blob_file_addition.GetTotalBlobCount(), 1);
CompressionOptions opts;
CompressionContext context(kSnappyCompression);
constexpr uint64_t sample_for_compression = 0;
CompressionInfo info(opts, context, CompressionDict::GetEmptyDict(),
kSnappyCompression, sample_for_compression);
std::string compressed_value;
ASSERT_TRUE(Snappy_Compress(info, uncompressed_value.data(),
uncompressed_value.size(), &compressed_value));
ASSERT_EQ(blob_file_addition.GetTotalBlobBytes(),
BlobLogRecord::kHeaderSize + key_size + compressed_value.size());
// Verify the contents of the new blob file as well as the blob reference
std::vector<std::pair<std::string, std::string>> expected_key_value_pairs{
{key, compressed_value}};
std::vector<std::string> blob_indexes{blob_index};
VerifyBlobFile(blob_file_number, blob_file_path, column_family_id,
kSnappyCompression, expected_key_value_pairs, blob_indexes);
}
TEST_F(BlobFileBuilderTest, CompressionError) {
// Simulate an error during compression
if (!Snappy_Supported()) {
return;
}
Options options;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_, "BlobFileBuilderTest_CompressionError"),
0);
options.enable_blob_files = true;
options.blob_compression_type = kSnappyCompression;
ImmutableCFOptions immutable_cf_options(options);
MutableCFOptions mutable_cf_options(options);
constexpr int job_id = 1;
constexpr uint32_t column_family_id = 123;
constexpr char column_family_name[] = "foobar";
constexpr Env::IOPriority io_priority = Env::IO_HIGH;
constexpr Env::WriteLifeTimeHint write_hint = Env::WLTH_MEDIUM;
std::vector<std::string> blob_file_paths;
std::vector<BlobFileAddition> blob_file_additions;
BlobFileBuilder builder(TestFileNumberGenerator(), &mock_env_, &fs_,
&immutable_cf_options, &mutable_cf_options,
&file_options_, job_id, column_family_id,
column_family_name, io_priority, write_hint,
&blob_file_paths, &blob_file_additions);
SyncPoint::GetInstance()->SetCallBack("CompressData:TamperWithReturnValue",
[](void* arg) {
bool* ret = static_cast<bool*>(arg);
*ret = false;
});
SyncPoint::GetInstance()->EnableProcessing();
constexpr char key[] = "1";
constexpr char value[] = "deadbeef";
std::string blob_index;
ASSERT_TRUE(builder.Add(key, value, &blob_index).IsCorruption());
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
constexpr uint64_t blob_file_number = 2;
ASSERT_EQ(blob_file_paths.size(), 1);
ASSERT_EQ(blob_file_paths[0],
BlobFileName(immutable_cf_options.cf_paths.front().path,
blob_file_number));
ASSERT_TRUE(blob_file_additions.empty());
}
TEST_F(BlobFileBuilderTest, Checksum) {
// Build a blob file with checksum
class DummyFileChecksumGenerator : public FileChecksumGenerator {
public:
void Update(const char* /* data */, size_t /* n */) override {}
void Finalize() override {}
std::string GetChecksum() const override { return std::string("dummy"); }
const char* Name() const override { return "DummyFileChecksum"; }
};
class DummyFileChecksumGenFactory : public FileChecksumGenFactory {
public:
std::unique_ptr<FileChecksumGenerator> CreateFileChecksumGenerator(
const FileChecksumGenContext& /* context */) override {
return std::unique_ptr<FileChecksumGenerator>(
new DummyFileChecksumGenerator);
}
const char* Name() const override { return "DummyFileChecksumGenFactory"; }
};
Options options;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_, "BlobFileBuilderTest_Checksum"), 0);
options.enable_blob_files = true;
options.file_checksum_gen_factory =
std::make_shared<DummyFileChecksumGenFactory>();
ImmutableCFOptions immutable_cf_options(options);
MutableCFOptions mutable_cf_options(options);
constexpr int job_id = 1;
constexpr uint32_t column_family_id = 123;
constexpr char column_family_name[] = "foobar";
constexpr Env::IOPriority io_priority = Env::IO_HIGH;
constexpr Env::WriteLifeTimeHint write_hint = Env::WLTH_MEDIUM;
std::vector<std::string> blob_file_paths;
std::vector<BlobFileAddition> blob_file_additions;
BlobFileBuilder builder(TestFileNumberGenerator(), &mock_env_, &fs_,
&immutable_cf_options, &mutable_cf_options,
&file_options_, job_id, column_family_id,
column_family_name, io_priority, write_hint,
&blob_file_paths, &blob_file_additions);
const std::string key("1");
const std::string value("deadbeef");
std::string blob_index;
ASSERT_OK(builder.Add(key, value, &blob_index));
ASSERT_FALSE(blob_index.empty());
ASSERT_OK(builder.Finish());
// Check the metadata generated
constexpr uint64_t blob_file_number = 2;
ASSERT_EQ(blob_file_paths.size(), 1);
const std::string& blob_file_path = blob_file_paths[0];
ASSERT_EQ(blob_file_path,
BlobFileName(immutable_cf_options.cf_paths.front().path,
blob_file_number));
ASSERT_EQ(blob_file_additions.size(), 1);
const auto& blob_file_addition = blob_file_additions[0];
ASSERT_EQ(blob_file_addition.GetBlobFileNumber(), blob_file_number);
ASSERT_EQ(blob_file_addition.GetTotalBlobCount(), 1);
ASSERT_EQ(blob_file_addition.GetTotalBlobBytes(),
BlobLogRecord::kHeaderSize + key.size() + value.size());
ASSERT_EQ(blob_file_addition.GetChecksumMethod(), "DummyFileChecksum");
ASSERT_EQ(blob_file_addition.GetChecksumValue(), "dummy");
// Verify the contents of the new blob file as well as the blob reference
std::vector<std::pair<std::string, std::string>> expected_key_value_pairs{
{key, value}};
std::vector<std::string> blob_indexes{blob_index};
VerifyBlobFile(blob_file_number, blob_file_path, column_family_id,
kNoCompression, expected_key_value_pairs, blob_indexes);
}
class BlobFileBuilderIOErrorTest
: public testing::Test,
public testing::WithParamInterface<std::string> {
protected:
BlobFileBuilderIOErrorTest()
: mock_env_(Env::Default()),
fault_injection_env_(&mock_env_),
fs_(&fault_injection_env_),
sync_point_(GetParam()) {}
MockEnv mock_env_;
FaultInjectionTestEnv fault_injection_env_;
LegacyFileSystemWrapper fs_;
FileOptions file_options_;
std::string sync_point_;
};
INSTANTIATE_TEST_CASE_P(
BlobFileBuilderTest, BlobFileBuilderIOErrorTest,
::testing::ValuesIn(std::vector<std::string>{
"BlobFileBuilder::OpenBlobFileIfNeeded:NewWritableFile",
"BlobFileBuilder::OpenBlobFileIfNeeded:WriteHeader",
"BlobFileBuilder::WriteBlobToFile:AddRecord",
"BlobFileBuilder::WriteBlobToFile:AppendFooter"}));
TEST_P(BlobFileBuilderIOErrorTest, IOError) {
// Simulate an I/O error during the specified step of Add()
// Note: blob_file_size will be set to value_size in order for the first blob
// to trigger close
constexpr size_t value_size = 8;
Options options;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&fault_injection_env_,
"BlobFileBuilderIOErrorTest_IOError"),
0);
options.enable_blob_files = true;
options.blob_file_size = value_size;
ImmutableCFOptions immutable_cf_options(options);
MutableCFOptions mutable_cf_options(options);
constexpr int job_id = 1;
constexpr uint32_t column_family_id = 123;
constexpr char column_family_name[] = "foobar";
constexpr Env::IOPriority io_priority = Env::IO_HIGH;
constexpr Env::WriteLifeTimeHint write_hint = Env::WLTH_MEDIUM;
std::vector<std::string> blob_file_paths;
std::vector<BlobFileAddition> blob_file_additions;
BlobFileBuilder builder(TestFileNumberGenerator(), &fault_injection_env_,
&fs_, &immutable_cf_options, &mutable_cf_options,
&file_options_, job_id, column_family_id,
column_family_name, io_priority, write_hint,
&blob_file_paths, &blob_file_additions);
SyncPoint::GetInstance()->SetCallBack(sync_point_, [this](void* /* arg */) {
fault_injection_env_.SetFilesystemActive(false,
Status::IOError(sync_point_));
});
SyncPoint::GetInstance()->EnableProcessing();
constexpr char key[] = "1";
constexpr char value[] = "deadbeef";
std::string blob_index;
ASSERT_TRUE(builder.Add(key, value, &blob_index).IsIOError());
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
if (sync_point_ == "BlobFileBuilder::OpenBlobFileIfNeeded:NewWritableFile") {
ASSERT_TRUE(blob_file_paths.empty());
} else {
constexpr uint64_t blob_file_number = 2;
ASSERT_EQ(blob_file_paths.size(), 1);
ASSERT_EQ(blob_file_paths[0],
BlobFileName(immutable_cf_options.cf_paths.front().path,
blob_file_number));
}
ASSERT_TRUE(blob_file_additions.empty());
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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