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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_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 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 ImmutableCFOptions& immutable_cf_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_type,
uint64_t* blob_offset, uint64_t* blob_size) {
assert(!immutable_cf_options.cf_paths.empty());
assert(blob_offset);
assert(blob_size);
const std::string blob_file_path = BlobFileName(
immutable_cf_options.cf_paths.front().path, blob_file_number);
std::unique_ptr<FSWritableFile> file;
ASSERT_OK(NewWritableFile(immutable_cf_options.fs, blob_file_path, &file,
FileOptions()));
std::unique_ptr<WritableFileWriter> file_writer(
new WritableFileWriter(std::move(file), blob_file_path, FileOptions(),
immutable_cf_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_cf_options.clock, statistics,
blob_file_number, use_fsync, do_flush);
BlobLogHeader header(column_family_id, compression_type, has_ttl,
expiration_range_header);
ASSERT_OK(blob_log_writer.WriteHeader(header));
std::string compressed_blob;
Slice blob_to_write;
if (compression_type == kNoCompression) {
blob_to_write = blob;
*blob_size = blob.size();
} else {
CompressionOptions opts;
CompressionContext context(compression_type);
constexpr uint64_t sample_for_compression = 0;
CompressionInfo info(opts, context, CompressionDict::GetEmptyDict(),
compression_type, sample_for_compression);
constexpr uint32_t compression_format_version = 2;
ASSERT_TRUE(
CompressData(blob, info, compression_format_version, &compressed_blob));
blob_to_write = compressed_blob;
*blob_size = compressed_blob.size();
}
uint64_t key_offset = 0;
ASSERT_OK(
blob_log_writer.AddRecord(key, blob_to_write, &key_offset, blob_offset));
BlobLogFooter footer;
footer.blob_count = 1;
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));
}
} // anonymous namespace
class BlobFileReaderTest : public testing::Test {
protected:
BlobFileReaderTest() : mock_env_(Env::Default()) {}
MockEnv mock_env_;
};
TEST_F(BlobFileReaderTest, CreateReaderAndGetBlob) {
Options options;
options.env = &mock_env_;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_,
"BlobFileReaderTest_CreateReaderAndGetBlob"),
0);
options.enable_blob_files = true;
ImmutableCFOptions immutable_cf_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_cf_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_cf_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;
{
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_OK(reader->GetBlob(read_options, key, blob_offset, blob_size,
kNoCompression, &value, &bytes_read));
ASSERT_EQ(value, blob);
ASSERT_EQ(bytes_read, blob_size);
}
read_options.verify_checksums = true;
{
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_OK(reader->GetBlob(read_options, key, blob_offset, blob_size,
kNoCompression, &value, &bytes_read));
ASSERT_EQ(value, blob);
constexpr uint64_t key_size = sizeof(key) - 1;
ASSERT_EQ(bytes_read,
BlobLogRecord::CalculateAdjustmentForRecordHeader(key_size) +
blob_size);
}
// Invalid offset (too close to start of file)
{
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(read_options, key, blob_offset - 1, blob_size,
kNoCompression, &value, &bytes_read)
.IsCorruption());
ASSERT_EQ(bytes_read, 0);
}
// Invalid offset (too close to end of file)
{
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(read_options, key, blob_offset + 1, blob_size,
kNoCompression, &value, &bytes_read)
.IsCorruption());
ASSERT_EQ(bytes_read, 0);
}
// Incorrect compression type
{
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(read_options, key, blob_offset, blob_size, kZSTD,
&value, &bytes_read)
.IsCorruption());
ASSERT_EQ(bytes_read, 0);
}
// Incorrect key size
{
constexpr char shorter_key[] = "k";
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(read_options, shorter_key,
blob_offset - (sizeof(key) - sizeof(shorter_key)),
blob_size, kNoCompression, &value, &bytes_read)
.IsCorruption());
ASSERT_EQ(bytes_read, 0);
}
// Incorrect key
{
constexpr char incorrect_key[] = "foo";
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(read_options, incorrect_key, blob_offset,
blob_size, kNoCompression, &value, &bytes_read)
.IsCorruption());
ASSERT_EQ(bytes_read, 0);
}
// Incorrect value size
{
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(read_options, key, blob_offset, blob_size + 1,
kNoCompression, &value, &bytes_read)
.IsCorruption());
ASSERT_EQ(bytes_read, 0);
}
}
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_;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_, "BlobFileReaderTest_Malformed"), 0);
options.enable_blob_files = true;
ImmutableCFOptions immutable_cf_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_cf_options.cf_paths.front().path, blob_file_number);
std::unique_ptr<FSWritableFile> file;
ASSERT_OK(NewWritableFile(immutable_cf_options.fs, blob_file_path, &file,
FileOptions()));
std::unique_ptr<WritableFileWriter> file_writer(
new WritableFileWriter(std::move(file), blob_file_path, FileOptions(),
immutable_cf_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_cf_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_cf_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_;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_, "BlobFileReaderTest_TTL"), 0);
options.enable_blob_files = true;
ImmutableCFOptions immutable_cf_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_cf_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_cf_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_;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_,
"BlobFileReaderTest_ExpirationRangeInHeader"),
0);
options.enable_blob_files = true;
ImmutableCFOptions immutable_cf_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_cf_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_cf_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_;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_,
"BlobFileReaderTest_ExpirationRangeInFooter"),
0);
options.enable_blob_files = true;
ImmutableCFOptions immutable_cf_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_cf_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_cf_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_;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_,
"BlobFileReaderTest_IncorrectColumnFamily"),
0);
options.enable_blob_files = true;
ImmutableCFOptions immutable_cf_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_cf_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_cf_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_;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_, "BlobFileReaderTest_BlobCRCError"), 0);
options.enable_blob_files = true;
ImmutableCFOptions immutable_cf_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_cf_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_cf_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();
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(ReadOptions(), key, blob_offset, blob_size,
kNoCompression, &value, &bytes_read)
.IsCorruption());
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_;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_, "BlobFileReaderTest_Compression"), 0);
options.enable_blob_files = true;
ImmutableCFOptions immutable_cf_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_cf_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_cf_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;
{
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_OK(reader->GetBlob(read_options, key, blob_offset, blob_size,
kSnappyCompression, &value, &bytes_read));
ASSERT_EQ(value, blob);
ASSERT_EQ(bytes_read, blob_size);
}
read_options.verify_checksums = true;
{
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_OK(reader->GetBlob(read_options, key, blob_offset, blob_size,
kSnappyCompression, &value, &bytes_read));
ASSERT_EQ(value, 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_;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_,
"BlobFileReaderTest_UncompressionError"),
0);
options.enable_blob_files = true;
ImmutableCFOptions immutable_cf_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_cf_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_cf_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();
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(ReadOptions(), key, blob_offset, blob_size,
kSnappyCompression, &value, &bytes_read)
.IsCorruption());
ASSERT_EQ(bytes_read, 0);
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
}
class BlobFileReaderIOErrorTest
: public testing::Test,
public testing::WithParamInterface<std::string> {
protected:
BlobFileReaderIOErrorTest()
: mock_env_(Env::Default()),
fault_injection_env_(&mock_env_),
sync_point_(GetParam()) {}
MockEnv mock_env_;
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_;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&fault_injection_env_,
"BlobFileReaderIOErrorTest_IOError"),
0);
options.enable_blob_files = true;
ImmutableCFOptions immutable_cf_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_cf_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_cf_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);
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(ReadOptions(), key, blob_offset, blob_size,
kNoCompression, &value, &bytes_read)
.IsIOError());
ASSERT_EQ(bytes_read, 0);
}
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
}
class BlobFileReaderDecodingErrorTest
: public testing::Test,
public testing::WithParamInterface<std::string> {
protected:
BlobFileReaderDecodingErrorTest()
: mock_env_(Env::Default()), sync_point_(GetParam()) {}
MockEnv 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_;
options.cf_paths.emplace_back(
test::PerThreadDBPath(&mock_env_,
"BlobFileReaderDecodingErrorTest_DecodingError"),
0);
options.enable_blob_files = true;
ImmutableCFOptions immutable_cf_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_cf_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_cf_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);
PinnableSlice value;
uint64_t bytes_read = 0;
ASSERT_TRUE(reader
->GetBlob(ReadOptions(), key, blob_offset, blob_size,
kNoCompression, &value, &bytes_read)
.IsCorruption());
ASSERT_EQ(bytes_read, 0);
}
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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