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rocksdb/db/blob/blob_file_reader_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_reader.h"
#include <cassert>
#include <string>
#include "db/blob/blob_contents.h"
#include "db/blob/blob_log_format.h"
#include "db/blob/blob_log_writer.h"
#include "env/mock_env.h"
#include "file/filename.h"
#include "file/read_write_util.h"
#include "file/writable_file_writer.h"
#include "options/cf_options.h"
#include "rocksdb/env.h"
#include "rocksdb/file_system.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 {
namespace {
// Creates a test blob file with `num` blobs in it.
void WriteBlobFile(const ImmutableOptions& immutable_options,
uint32_t column_family_id, bool has_ttl,
const ExpirationRange& expiration_range_header,
const ExpirationRange& expiration_range_footer,
uint64_t blob_file_number, const std::vector<Slice>& keys,
const std::vector<Slice>& blobs, CompressionType compression,
std::vector<uint64_t>& blob_offsets,
std::vector<uint64_t>& blob_sizes) {
assert(!immutable_options.cf_paths.empty());
size_t num = keys.size();
assert(num == blobs.size());
assert(num == blob_offsets.size());
assert(num == blob_sizes.size());
const std::string blob_file_path =
BlobFileName(immutable_options.cf_paths.front().path, blob_file_number);
std::unique_ptr<FSWritableFile> file;
ASSERT_OK(NewWritableFile(immutable_options.fs.get(), blob_file_path, &file,
FileOptions()));
std::unique_ptr<WritableFileWriter> file_writer(new WritableFileWriter(
std::move(file), blob_file_path, FileOptions(), immutable_options.clock));
constexpr Statistics* statistics = nullptr;
constexpr bool use_fsync = false;
constexpr bool do_flush = false;
BlobLogWriter blob_log_writer(std::move(file_writer), immutable_options.clock,
statistics, blob_file_number, use_fsync,
do_flush);
BlobLogHeader header(column_family_id, compression, has_ttl,
expiration_range_header);
ASSERT_OK(blob_log_writer.WriteHeader(header));
std::vector<std::string> compressed_blobs(num);
std::vector<Slice> blobs_to_write(num);
if (kNoCompression == compression) {
for (size_t i = 0; i < num; ++i) {
blobs_to_write[i] = blobs[i];
blob_sizes[i] = blobs[i].size();
}
} else {
CompressionOptions opts;
CompressionContext context(compression);
constexpr uint64_t sample_for_compression = 0;
CompressionInfo info(opts, context, CompressionDict::GetEmptyDict(),
compression, sample_for_compression);
constexpr uint32_t compression_format_version = 2;
for (size_t i = 0; i < num; ++i) {
ASSERT_TRUE(CompressData(blobs[i], info, compression_format_version,
&compressed_blobs[i]));
blobs_to_write[i] = compressed_blobs[i];
blob_sizes[i] = compressed_blobs[i].size();
}
}
for (size_t i = 0; i < num; ++i) {
uint64_t key_offset = 0;
ASSERT_OK(blob_log_writer.AddRecord(keys[i], blobs_to_write[i], &key_offset,
&blob_offsets[i]));
}
BlobLogFooter footer;
footer.blob_count = num;
footer.expiration_range = expiration_range_footer;
std::string checksum_method;
std::string checksum_value;
ASSERT_OK(
blob_log_writer.AppendFooter(footer, &checksum_method, &checksum_value));
}
// Creates a test blob file with a single blob in it. Note: this method
// makes it possible to test various corner cases by allowing the caller
// to specify the contents of various blob file header/footer fields.
void WriteBlobFile(const ImmutableOptions& immutable_options,
uint32_t column_family_id, bool has_ttl,
const ExpirationRange& expiration_range_header,
const ExpirationRange& expiration_range_footer,
uint64_t blob_file_number, const Slice& key,
const Slice& blob, CompressionType compression,
uint64_t* blob_offset, uint64_t* blob_size) {
std::vector<Slice> keys{key};
std::vector<Slice> blobs{blob};
std::vector<uint64_t> blob_offsets{0};
std::vector<uint64_t> blob_sizes{0};
WriteBlobFile(immutable_options, column_family_id, has_ttl,
expiration_range_header, expiration_range_footer,
blob_file_number, keys, blobs, compression, blob_offsets,
blob_sizes);
if (blob_offset) {
*blob_offset = blob_offsets[0];
}
if (blob_size) {
*blob_size = blob_sizes[0];
}
}
} // anonymous namespace
class BlobFileReaderTest : public testing::Test {
protected:
BlobFileReaderTest() { mock_env_.reset(MockEnv::Create(Env::Default())); }
std::unique_ptr<Env> mock_env_;
};
TEST_F(BlobFileReaderTest, CreateReaderAndGetBlob) {
Options options;
options.env = mock_env_.get();
options.cf_paths.emplace_back(
test::PerThreadDBPath(mock_env_.get(),
"BlobFileReaderTest_CreateReaderAndGetBlob"),
0);
options.enable_blob_files = true;
ImmutableOptions immutable_options(options);
constexpr uint32_t column_family_id = 1;
constexpr bool has_ttl = false;
constexpr ExpirationRange expiration_range;
constexpr uint64_t blob_file_number = 1;
constexpr size_t num_blobs = 3;
const std::vector<std::string> key_strs = {"key1", "key2", "key3"};
const std::vector<std::string> blob_strs = {"blob1", "blob2", "blob3"};
const std::vector<Slice> keys = {key_strs[0], key_strs[1], key_strs[2]};
const std::vector<Slice> blobs = {blob_strs[0], blob_strs[1], blob_strs[2]};
std::vector<uint64_t> blob_offsets(keys.size());
std::vector<uint64_t> blob_sizes(keys.size());
WriteBlobFile(immutable_options, column_family_id, has_ttl, expiration_range,
expiration_range, blob_file_number, keys, blobs, kNoCompression,
blob_offsets, blob_sizes);
constexpr HistogramImpl* blob_file_read_hist = nullptr;
std::unique_ptr<BlobFileReader> reader;
ASSERT_OK(BlobFileReader::Create(
immutable_options, FileOptions(), column_family_id, blob_file_read_hist,
blob_file_number, nullptr /*IOTracer*/, &reader));
// Make sure the blob can be retrieved with and without checksum verification
ReadOptions read_options;
read_options.verify_checksums = false;
constexpr FilePrefetchBuffer* prefetch_buffer = nullptr;
constexpr MemoryAllocator* allocator = nullptr;
{
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_OK(reader->GetBlob(read_options, keys[0], blob_offsets[0],
blob_sizes[0], kNoCompression, prefetch_buffer,
allocator, &value, &bytes_read));
ASSERT_NE(value, nullptr);
ASSERT_EQ(value->data(), blobs[0]);
ASSERT_EQ(bytes_read, blob_sizes[0]);
// MultiGetBlob
bytes_read = 0;
size_t total_size = 0;
std::array<Status, num_blobs> statuses_buf;
std::array<BlobReadRequest, num_blobs> requests_buf;
autovector<std::pair<BlobReadRequest*, std::unique_ptr<BlobContents>>>
blob_reqs;
for (size_t i = 0; i < num_blobs; ++i) {
requests_buf[i] =
BlobReadRequest(keys[i], blob_offsets[i], blob_sizes[i],
kNoCompression, nullptr, &statuses_buf[i]);
blob_reqs.emplace_back(&requests_buf[i], std::unique_ptr<BlobContents>());
}
reader->MultiGetBlob(read_options, allocator, blob_reqs, &bytes_read);
for (size_t i = 0; i < num_blobs; ++i) {
const auto& result = blob_reqs[i].second;
ASSERT_OK(statuses_buf[i]);
ASSERT_NE(result, nullptr);
ASSERT_EQ(result->data(), blobs[i]);
total_size += blob_sizes[i];
}
ASSERT_EQ(bytes_read, total_size);
}
read_options.verify_checksums = true;
{
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_OK(reader->GetBlob(read_options, keys[1], blob_offsets[1],
blob_sizes[1], kNoCompression, prefetch_buffer,
allocator, &value, &bytes_read));
ASSERT_NE(value, nullptr);
ASSERT_EQ(value->data(), blobs[1]);
const uint64_t key_size = keys[1].size();
ASSERT_EQ(bytes_read,
BlobLogRecord::CalculateAdjustmentForRecordHeader(key_size) +
blob_sizes[1]);
}
// Invalid offset (too close to start of file)
{
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(read_options, keys[0], blob_offsets[0] - 1,
blob_sizes[0], kNoCompression, prefetch_buffer,
allocator, &value, &bytes_read)
.IsCorruption());
ASSERT_EQ(value, nullptr);
ASSERT_EQ(bytes_read, 0);
}
// Invalid offset (too close to end of file)
{
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(read_options, keys[2], blob_offsets[2] + 1,
blob_sizes[2], kNoCompression, prefetch_buffer,
allocator, &value, &bytes_read)
.IsCorruption());
ASSERT_EQ(value, nullptr);
ASSERT_EQ(bytes_read, 0);
}
// Incorrect compression type
{
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(read_options, keys[0], blob_offsets[0],
blob_sizes[0], kZSTD, prefetch_buffer, allocator,
&value, &bytes_read)
.IsCorruption());
ASSERT_EQ(value, nullptr);
ASSERT_EQ(bytes_read, 0);
}
// Incorrect key size
{
constexpr char shorter_key[] = "k";
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(read_options, shorter_key,
blob_offsets[0] -
(keys[0].size() - sizeof(shorter_key) + 1),
blob_sizes[0], kNoCompression, prefetch_buffer,
allocator, &value, &bytes_read)
.IsCorruption());
ASSERT_EQ(value, nullptr);
ASSERT_EQ(bytes_read, 0);
// MultiGetBlob
autovector<std::reference_wrapper<const Slice>> key_refs;
for (const auto& key_ref : keys) {
key_refs.emplace_back(std::cref(key_ref));
}
Slice shorter_key_slice(shorter_key, sizeof(shorter_key) - 1);
key_refs[1] = std::cref(shorter_key_slice);
autovector<uint64_t> offsets{
blob_offsets[0],
blob_offsets[1] - (keys[1].size() - key_refs[1].get().size()),
blob_offsets[2]};
std::array<Status, num_blobs> statuses_buf;
std::array<BlobReadRequest, num_blobs> requests_buf;
autovector<std::pair<BlobReadRequest*, std::unique_ptr<BlobContents>>>
blob_reqs;
for (size_t i = 0; i < num_blobs; ++i) {
requests_buf[i] =
BlobReadRequest(key_refs[i], offsets[i], blob_sizes[i],
kNoCompression, nullptr, &statuses_buf[i]);
blob_reqs.emplace_back(&requests_buf[i], std::unique_ptr<BlobContents>());
}
reader->MultiGetBlob(read_options, allocator, blob_reqs, &bytes_read);
for (size_t i = 0; i < num_blobs; ++i) {
if (i == 1) {
ASSERT_TRUE(statuses_buf[i].IsCorruption());
} else {
ASSERT_OK(statuses_buf[i]);
}
}
}
// Incorrect key
{
constexpr char incorrect_key[] = "foo1";
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(read_options, incorrect_key, blob_offsets[0],
blob_sizes[0], kNoCompression, prefetch_buffer,
allocator, &value, &bytes_read)
.IsCorruption());
ASSERT_EQ(value, nullptr);
ASSERT_EQ(bytes_read, 0);
// MultiGetBlob
autovector<std::reference_wrapper<const Slice>> key_refs;
for (const auto& key_ref : keys) {
key_refs.emplace_back(std::cref(key_ref));
}
Slice wrong_key_slice(incorrect_key, sizeof(incorrect_key) - 1);
key_refs[2] = std::cref(wrong_key_slice);
std::array<Status, num_blobs> statuses_buf;
std::array<BlobReadRequest, num_blobs> requests_buf;
autovector<std::pair<BlobReadRequest*, std::unique_ptr<BlobContents>>>
blob_reqs;
for (size_t i = 0; i < num_blobs; ++i) {
requests_buf[i] =
BlobReadRequest(key_refs[i], blob_offsets[i], blob_sizes[i],
kNoCompression, nullptr, &statuses_buf[i]);
blob_reqs.emplace_back(&requests_buf[i], std::unique_ptr<BlobContents>());
}
reader->MultiGetBlob(read_options, allocator, blob_reqs, &bytes_read);
for (size_t i = 0; i < num_blobs; ++i) {
if (i == num_blobs - 1) {
ASSERT_TRUE(statuses_buf[i].IsCorruption());
} else {
ASSERT_OK(statuses_buf[i]);
}
}
}
// Incorrect value size
{
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(read_options, keys[1], blob_offsets[1],
blob_sizes[1] + 1, kNoCompression,
prefetch_buffer, allocator, &value, &bytes_read)
.IsCorruption());
ASSERT_EQ(value, nullptr);
ASSERT_EQ(bytes_read, 0);
// MultiGetBlob
autovector<std::reference_wrapper<const Slice>> key_refs;
for (const auto& key_ref : keys) {
key_refs.emplace_back(std::cref(key_ref));
}
std::array<Status, num_blobs> statuses_buf;
std::array<BlobReadRequest, num_blobs> requests_buf;
requests_buf[0] =
BlobReadRequest(key_refs[0], blob_offsets[0], blob_sizes[0],
kNoCompression, nullptr, &statuses_buf[0]);
requests_buf[1] =
BlobReadRequest(key_refs[1], blob_offsets[1], blob_sizes[1] + 1,
kNoCompression, nullptr, &statuses_buf[1]);
requests_buf[2] =
BlobReadRequest(key_refs[2], blob_offsets[2], blob_sizes[2],
kNoCompression, nullptr, &statuses_buf[2]);
autovector<std::pair<BlobReadRequest*, std::unique_ptr<BlobContents>>>
blob_reqs;
for (size_t i = 0; i < num_blobs; ++i) {
blob_reqs.emplace_back(&requests_buf[i], std::unique_ptr<BlobContents>());
}
reader->MultiGetBlob(read_options, allocator, blob_reqs, &bytes_read);
for (size_t i = 0; i < num_blobs; ++i) {
if (i != 1) {
ASSERT_OK(statuses_buf[i]);
} else {
ASSERT_TRUE(statuses_buf[i].IsCorruption());
}
}
}
}
TEST_F(BlobFileReaderTest, Malformed) {
// Write a blob file consisting of nothing but a header, and make sure we
// detect the error when we open it for reading
Options options;
options.env = mock_env_.get();
options.cf_paths.emplace_back(
test::PerThreadDBPath(mock_env_.get(), "BlobFileReaderTest_Malformed"),
0);
options.enable_blob_files = true;
ImmutableOptions immutable_options(options);
constexpr uint32_t column_family_id = 1;
constexpr uint64_t blob_file_number = 1;
{
constexpr bool has_ttl = false;
constexpr ExpirationRange expiration_range;
const std::string blob_file_path =
BlobFileName(immutable_options.cf_paths.front().path, blob_file_number);
std::unique_ptr<FSWritableFile> file;
ASSERT_OK(NewWritableFile(immutable_options.fs.get(), blob_file_path, &file,
FileOptions()));
std::unique_ptr<WritableFileWriter> file_writer(
new WritableFileWriter(std::move(file), blob_file_path, FileOptions(),
immutable_options.clock));
constexpr Statistics* statistics = nullptr;
constexpr bool use_fsync = false;
constexpr bool do_flush = false;
BlobLogWriter blob_log_writer(std::move(file_writer),
immutable_options.clock, statistics,
blob_file_number, use_fsync, do_flush);
BlobLogHeader header(column_family_id, kNoCompression, has_ttl,
expiration_range);
ASSERT_OK(blob_log_writer.WriteHeader(header));
}
constexpr HistogramImpl* blob_file_read_hist = nullptr;
std::unique_ptr<BlobFileReader> reader;
ASSERT_TRUE(BlobFileReader::Create(immutable_options, FileOptions(),
column_family_id, blob_file_read_hist,
blob_file_number, nullptr /*IOTracer*/,
&reader)
.IsCorruption());
}
TEST_F(BlobFileReaderTest, TTL) {
Options options;
options.env = mock_env_.get();
options.cf_paths.emplace_back(
test::PerThreadDBPath(mock_env_.get(), "BlobFileReaderTest_TTL"), 0);
options.enable_blob_files = true;
ImmutableOptions immutable_options(options);
constexpr uint32_t column_family_id = 1;
constexpr bool has_ttl = true;
constexpr ExpirationRange expiration_range;
constexpr uint64_t blob_file_number = 1;
constexpr char key[] = "key";
constexpr char blob[] = "blob";
uint64_t blob_offset = 0;
uint64_t blob_size = 0;
WriteBlobFile(immutable_options, column_family_id, has_ttl, expiration_range,
expiration_range, blob_file_number, key, blob, kNoCompression,
&blob_offset, &blob_size);
constexpr HistogramImpl* blob_file_read_hist = nullptr;
std::unique_ptr<BlobFileReader> reader;
ASSERT_TRUE(BlobFileReader::Create(immutable_options, FileOptions(),
column_family_id, blob_file_read_hist,
blob_file_number, nullptr /*IOTracer*/,
&reader)
.IsCorruption());
}
TEST_F(BlobFileReaderTest, ExpirationRangeInHeader) {
Options options;
options.env = mock_env_.get();
options.cf_paths.emplace_back(
test::PerThreadDBPath(mock_env_.get(),
"BlobFileReaderTest_ExpirationRangeInHeader"),
0);
options.enable_blob_files = true;
ImmutableOptions immutable_options(options);
constexpr uint32_t column_family_id = 1;
constexpr bool has_ttl = false;
const ExpirationRange expiration_range_header(
1, 2); // can be made constexpr when we adopt C++14
constexpr ExpirationRange expiration_range_footer;
constexpr uint64_t blob_file_number = 1;
constexpr char key[] = "key";
constexpr char blob[] = "blob";
uint64_t blob_offset = 0;
uint64_t blob_size = 0;
WriteBlobFile(immutable_options, column_family_id, has_ttl,
expiration_range_header, expiration_range_footer,
blob_file_number, key, blob, kNoCompression, &blob_offset,
&blob_size);
constexpr HistogramImpl* blob_file_read_hist = nullptr;
std::unique_ptr<BlobFileReader> reader;
ASSERT_TRUE(BlobFileReader::Create(immutable_options, FileOptions(),
column_family_id, blob_file_read_hist,
blob_file_number, nullptr /*IOTracer*/,
&reader)
.IsCorruption());
}
TEST_F(BlobFileReaderTest, ExpirationRangeInFooter) {
Options options;
options.env = mock_env_.get();
options.cf_paths.emplace_back(
test::PerThreadDBPath(mock_env_.get(),
"BlobFileReaderTest_ExpirationRangeInFooter"),
0);
options.enable_blob_files = true;
ImmutableOptions immutable_options(options);
constexpr uint32_t column_family_id = 1;
constexpr bool has_ttl = false;
constexpr ExpirationRange expiration_range_header;
const ExpirationRange expiration_range_footer(
1, 2); // can be made constexpr when we adopt C++14
constexpr uint64_t blob_file_number = 1;
constexpr char key[] = "key";
constexpr char blob[] = "blob";
uint64_t blob_offset = 0;
uint64_t blob_size = 0;
WriteBlobFile(immutable_options, column_family_id, has_ttl,
expiration_range_header, expiration_range_footer,
blob_file_number, key, blob, kNoCompression, &blob_offset,
&blob_size);
constexpr HistogramImpl* blob_file_read_hist = nullptr;
std::unique_ptr<BlobFileReader> reader;
ASSERT_TRUE(BlobFileReader::Create(immutable_options, FileOptions(),
column_family_id, blob_file_read_hist,
blob_file_number, nullptr /*IOTracer*/,
&reader)
.IsCorruption());
}
TEST_F(BlobFileReaderTest, IncorrectColumnFamily) {
Options options;
options.env = mock_env_.get();
options.cf_paths.emplace_back(
test::PerThreadDBPath(mock_env_.get(),
"BlobFileReaderTest_IncorrectColumnFamily"),
0);
options.enable_blob_files = true;
ImmutableOptions immutable_options(options);
constexpr uint32_t column_family_id = 1;
constexpr bool has_ttl = false;
constexpr ExpirationRange expiration_range;
constexpr uint64_t blob_file_number = 1;
constexpr char key[] = "key";
constexpr char blob[] = "blob";
uint64_t blob_offset = 0;
uint64_t blob_size = 0;
WriteBlobFile(immutable_options, column_family_id, has_ttl, expiration_range,
expiration_range, blob_file_number, key, blob, kNoCompression,
&blob_offset, &blob_size);
constexpr HistogramImpl* blob_file_read_hist = nullptr;
std::unique_ptr<BlobFileReader> reader;
constexpr uint32_t incorrect_column_family_id = 2;
ASSERT_TRUE(BlobFileReader::Create(immutable_options, FileOptions(),
incorrect_column_family_id,
blob_file_read_hist, blob_file_number,
nullptr /*IOTracer*/, &reader)
.IsCorruption());
}
TEST_F(BlobFileReaderTest, BlobCRCError) {
Options options;
options.env = mock_env_.get();
options.cf_paths.emplace_back(
test::PerThreadDBPath(mock_env_.get(), "BlobFileReaderTest_BlobCRCError"),
0);
options.enable_blob_files = true;
ImmutableOptions immutable_options(options);
constexpr uint32_t column_family_id = 1;
constexpr bool has_ttl = false;
constexpr ExpirationRange expiration_range;
constexpr uint64_t blob_file_number = 1;
constexpr char key[] = "key";
constexpr char blob[] = "blob";
uint64_t blob_offset = 0;
uint64_t blob_size = 0;
WriteBlobFile(immutable_options, column_family_id, has_ttl, expiration_range,
expiration_range, blob_file_number, key, blob, kNoCompression,
&blob_offset, &blob_size);
constexpr HistogramImpl* blob_file_read_hist = nullptr;
std::unique_ptr<BlobFileReader> reader;
ASSERT_OK(BlobFileReader::Create(
immutable_options, FileOptions(), column_family_id, blob_file_read_hist,
blob_file_number, nullptr /*IOTracer*/, &reader));
SyncPoint::GetInstance()->SetCallBack(
"BlobFileReader::VerifyBlob:CheckBlobCRC", [](void* arg) {
BlobLogRecord* const record = static_cast<BlobLogRecord*>(arg);
assert(record);
record->blob_crc = 0xfaceb00c;
});
SyncPoint::GetInstance()->EnableProcessing();
constexpr FilePrefetchBuffer* prefetch_buffer = nullptr;
constexpr MemoryAllocator* allocator = nullptr;
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(ReadOptions(), key, blob_offset, blob_size,
kNoCompression, prefetch_buffer, allocator, &value,
&bytes_read)
.IsCorruption());
ASSERT_EQ(value, nullptr);
ASSERT_EQ(bytes_read, 0);
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
}
TEST_F(BlobFileReaderTest, Compression) {
if (!Snappy_Supported()) {
return;
}
Options options;
options.env = mock_env_.get();
options.cf_paths.emplace_back(
test::PerThreadDBPath(mock_env_.get(), "BlobFileReaderTest_Compression"),
0);
options.enable_blob_files = true;
ImmutableOptions immutable_options(options);
constexpr uint32_t column_family_id = 1;
constexpr bool has_ttl = false;
constexpr ExpirationRange expiration_range;
constexpr uint64_t blob_file_number = 1;
constexpr char key[] = "key";
constexpr char blob[] = "blob";
uint64_t blob_offset = 0;
uint64_t blob_size = 0;
WriteBlobFile(immutable_options, column_family_id, has_ttl, expiration_range,
expiration_range, blob_file_number, key, blob,
kSnappyCompression, &blob_offset, &blob_size);
constexpr HistogramImpl* blob_file_read_hist = nullptr;
std::unique_ptr<BlobFileReader> reader;
ASSERT_OK(BlobFileReader::Create(
immutable_options, FileOptions(), column_family_id, blob_file_read_hist,
blob_file_number, nullptr /*IOTracer*/, &reader));
// Make sure the blob can be retrieved with and without checksum verification
ReadOptions read_options;
read_options.verify_checksums = false;
constexpr FilePrefetchBuffer* prefetch_buffer = nullptr;
constexpr MemoryAllocator* allocator = nullptr;
{
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_OK(reader->GetBlob(read_options, key, blob_offset, blob_size,
kSnappyCompression, prefetch_buffer, allocator,
&value, &bytes_read));
ASSERT_NE(value, nullptr);
ASSERT_EQ(value->data(), blob);
ASSERT_EQ(bytes_read, blob_size);
}
read_options.verify_checksums = true;
{
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_OK(reader->GetBlob(read_options, key, blob_offset, blob_size,
kSnappyCompression, prefetch_buffer, allocator,
&value, &bytes_read));
ASSERT_NE(value, nullptr);
ASSERT_EQ(value->data(), blob);
constexpr uint64_t key_size = sizeof(key) - 1;
ASSERT_EQ(bytes_read,
BlobLogRecord::CalculateAdjustmentForRecordHeader(key_size) +
blob_size);
}
}
TEST_F(BlobFileReaderTest, UncompressionError) {
if (!Snappy_Supported()) {
return;
}
Options options;
options.env = mock_env_.get();
options.cf_paths.emplace_back(
test::PerThreadDBPath(mock_env_.get(),
"BlobFileReaderTest_UncompressionError"),
0);
options.enable_blob_files = true;
ImmutableOptions immutable_options(options);
constexpr uint32_t column_family_id = 1;
constexpr bool has_ttl = false;
constexpr ExpirationRange expiration_range;
constexpr uint64_t blob_file_number = 1;
constexpr char key[] = "key";
constexpr char blob[] = "blob";
uint64_t blob_offset = 0;
uint64_t blob_size = 0;
WriteBlobFile(immutable_options, column_family_id, has_ttl, expiration_range,
expiration_range, blob_file_number, key, blob,
kSnappyCompression, &blob_offset, &blob_size);
constexpr HistogramImpl* blob_file_read_hist = nullptr;
std::unique_ptr<BlobFileReader> reader;
ASSERT_OK(BlobFileReader::Create(
immutable_options, FileOptions(), column_family_id, blob_file_read_hist,
blob_file_number, nullptr /*IOTracer*/, &reader));
SyncPoint::GetInstance()->SetCallBack(
"BlobFileReader::UncompressBlobIfNeeded:TamperWithResult", [](void* arg) {
CacheAllocationPtr* const output =
static_cast<CacheAllocationPtr*>(arg);
assert(output);
output->reset();
});
SyncPoint::GetInstance()->EnableProcessing();
constexpr FilePrefetchBuffer* prefetch_buffer = nullptr;
constexpr MemoryAllocator* allocator = nullptr;
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(ReadOptions(), key, blob_offset, blob_size,
kSnappyCompression, prefetch_buffer, allocator,
&value, &bytes_read)
.IsCorruption());
ASSERT_EQ(value, nullptr);
ASSERT_EQ(bytes_read, 0);
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
}
class BlobFileReaderIOErrorTest
: public testing::Test,
public testing::WithParamInterface<std::string> {
protected:
BlobFileReaderIOErrorTest() : sync_point_(GetParam()) {
mock_env_.reset(MockEnv::Create(Env::Default()));
fault_injection_env_.reset(new FaultInjectionTestEnv(mock_env_.get()));
}
std::unique_ptr<Env> mock_env_;
std::unique_ptr<FaultInjectionTestEnv> fault_injection_env_;
std::string sync_point_;
};
INSTANTIATE_TEST_CASE_P(BlobFileReaderTest, BlobFileReaderIOErrorTest,
::testing::ValuesIn(std::vector<std::string>{
"BlobFileReader::OpenFile:GetFileSize",
"BlobFileReader::OpenFile:NewRandomAccessFile",
"BlobFileReader::ReadHeader:ReadFromFile",
"BlobFileReader::ReadFooter:ReadFromFile",
"BlobFileReader::GetBlob:ReadFromFile"}));
TEST_P(BlobFileReaderIOErrorTest, IOError) {
// Simulates an I/O error during the specified step
Options options;
options.env = fault_injection_env_.get();
options.cf_paths.emplace_back(
test::PerThreadDBPath(fault_injection_env_.get(),
"BlobFileReaderIOErrorTest_IOError"),
0);
options.enable_blob_files = true;
ImmutableOptions immutable_options(options);
constexpr uint32_t column_family_id = 1;
constexpr bool has_ttl = false;
constexpr ExpirationRange expiration_range;
constexpr uint64_t blob_file_number = 1;
constexpr char key[] = "key";
constexpr char blob[] = "blob";
uint64_t blob_offset = 0;
uint64_t blob_size = 0;
WriteBlobFile(immutable_options, column_family_id, has_ttl, expiration_range,
expiration_range, blob_file_number, key, blob, kNoCompression,
&blob_offset, &blob_size);
SyncPoint::GetInstance()->SetCallBack(sync_point_, [this](void* /* arg */) {
fault_injection_env_->SetFilesystemActive(false,
Status::IOError(sync_point_));
});
SyncPoint::GetInstance()->EnableProcessing();
constexpr HistogramImpl* blob_file_read_hist = nullptr;
std::unique_ptr<BlobFileReader> reader;
const Status s = BlobFileReader::Create(
immutable_options, FileOptions(), column_family_id, blob_file_read_hist,
blob_file_number, nullptr /*IOTracer*/, &reader);
const bool fail_during_create =
(sync_point_ != "BlobFileReader::GetBlob:ReadFromFile");
if (fail_during_create) {
ASSERT_TRUE(s.IsIOError());
} else {
ASSERT_OK(s);
constexpr FilePrefetchBuffer* prefetch_buffer = nullptr;
constexpr MemoryAllocator* allocator = nullptr;
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(ReadOptions(), key, blob_offset, blob_size,
kNoCompression, prefetch_buffer, allocator,
&value, &bytes_read)
.IsIOError());
ASSERT_EQ(value, nullptr);
ASSERT_EQ(bytes_read, 0);
}
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
}
class BlobFileReaderDecodingErrorTest
: public testing::Test,
public testing::WithParamInterface<std::string> {
protected:
BlobFileReaderDecodingErrorTest() : sync_point_(GetParam()) {
mock_env_.reset(MockEnv::Create(Env::Default()));
}
std::unique_ptr<Env> mock_env_;
std::string sync_point_;
};
INSTANTIATE_TEST_CASE_P(BlobFileReaderTest, BlobFileReaderDecodingErrorTest,
::testing::ValuesIn(std::vector<std::string>{
"BlobFileReader::ReadHeader:TamperWithResult",
"BlobFileReader::ReadFooter:TamperWithResult",
"BlobFileReader::GetBlob:TamperWithResult"}));
TEST_P(BlobFileReaderDecodingErrorTest, DecodingError) {
Options options;
options.env = mock_env_.get();
options.cf_paths.emplace_back(
test::PerThreadDBPath(mock_env_.get(),
"BlobFileReaderDecodingErrorTest_DecodingError"),
0);
options.enable_blob_files = true;
ImmutableOptions immutable_options(options);
constexpr uint32_t column_family_id = 1;
constexpr bool has_ttl = false;
constexpr ExpirationRange expiration_range;
constexpr uint64_t blob_file_number = 1;
constexpr char key[] = "key";
constexpr char blob[] = "blob";
uint64_t blob_offset = 0;
uint64_t blob_size = 0;
WriteBlobFile(immutable_options, column_family_id, has_ttl, expiration_range,
expiration_range, blob_file_number, key, blob, kNoCompression,
&blob_offset, &blob_size);
SyncPoint::GetInstance()->SetCallBack(sync_point_, [](void* arg) {
Slice* const slice = static_cast<Slice*>(arg);
assert(slice);
assert(!slice->empty());
slice->remove_prefix(1);
});
SyncPoint::GetInstance()->EnableProcessing();
constexpr HistogramImpl* blob_file_read_hist = nullptr;
std::unique_ptr<BlobFileReader> reader;
const Status s = BlobFileReader::Create(
immutable_options, FileOptions(), column_family_id, blob_file_read_hist,
blob_file_number, nullptr /*IOTracer*/, &reader);
const bool fail_during_create =
sync_point_ != "BlobFileReader::GetBlob:TamperWithResult";
if (fail_during_create) {
ASSERT_TRUE(s.IsCorruption());
} else {
ASSERT_OK(s);
constexpr FilePrefetchBuffer* prefetch_buffer = nullptr;
constexpr MemoryAllocator* allocator = nullptr;
std::unique_ptr<BlobContents> value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(ReadOptions(), key, blob_offset, blob_size,
kNoCompression, prefetch_buffer, allocator,
&value, &bytes_read)
.IsCorruption());
ASSERT_EQ(value, nullptr);
ASSERT_EQ(bytes_read, 0);
}
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}