mirror of https://github.com/facebook/rocksdb.git
1059 lines
38 KiB
C++
1059 lines
38 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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#include <algorithm>
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#include <vector>
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#include "db/db_test_util.h"
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#include "env/mock_env.h"
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#include "file/line_file_reader.h"
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#include "file/random_access_file_reader.h"
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#include "file/read_write_util.h"
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#include "file/readahead_raf.h"
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#include "file/sequence_file_reader.h"
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#include "file/writable_file_writer.h"
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#include "rocksdb/file_system.h"
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#include "test_util/testharness.h"
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#include "test_util/testutil.h"
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#include "util/crc32c.h"
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#include "util/random.h"
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#include "utilities/fault_injection_fs.h"
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namespace ROCKSDB_NAMESPACE {
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class WritableFileWriterTest : public testing::Test {};
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constexpr uint32_t kMb = static_cast<uint32_t>(1) << 20;
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TEST_F(WritableFileWriterTest, RangeSync) {
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class FakeWF : public FSWritableFile {
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public:
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explicit FakeWF() : size_(0), last_synced_(0) {}
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~FakeWF() override {}
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using FSWritableFile::Append;
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IOStatus Append(const Slice& data, const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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size_ += data.size();
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return IOStatus::OK();
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}
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IOStatus Truncate(uint64_t /*size*/, const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return IOStatus::OK();
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}
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IOStatus Close(const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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EXPECT_GE(size_, last_synced_ + kMb);
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EXPECT_LT(size_, last_synced_ + 2 * kMb);
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// Make sure random writes generated enough writes.
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EXPECT_GT(size_, 10 * kMb);
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return IOStatus::OK();
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}
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IOStatus Flush(const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return IOStatus::OK();
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}
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IOStatus Sync(const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return IOStatus::OK();
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}
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IOStatus Fsync(const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return IOStatus::OK();
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}
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void SetIOPriority(Env::IOPriority /*pri*/) override {}
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uint64_t GetFileSize(const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return size_;
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}
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void GetPreallocationStatus(size_t* /*block_size*/,
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size_t* /*last_allocated_block*/) override {}
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size_t GetUniqueId(char* /*id*/, size_t /*max_size*/) const override {
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return 0;
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}
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IOStatus InvalidateCache(size_t /*offset*/, size_t /*length*/) override {
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return IOStatus::OK();
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}
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protected:
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IOStatus Allocate(uint64_t /*offset*/, uint64_t /*len*/,
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const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return IOStatus::OK();
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}
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IOStatus RangeSync(uint64_t offset, uint64_t nbytes,
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const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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EXPECT_EQ(offset % 4096, 0u);
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EXPECT_EQ(nbytes % 4096, 0u);
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EXPECT_EQ(offset, last_synced_);
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last_synced_ = offset + nbytes;
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EXPECT_GE(size_, last_synced_ + kMb);
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if (size_ > 2 * kMb) {
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EXPECT_LT(size_, last_synced_ + 2 * kMb);
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}
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return IOStatus::OK();
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}
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uint64_t size_;
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uint64_t last_synced_;
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};
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EnvOptions env_options;
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env_options.bytes_per_sync = kMb;
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std::unique_ptr<FakeWF> wf(new FakeWF);
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std::unique_ptr<WritableFileWriter> writer(
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new WritableFileWriter(std::move(wf), "" /* don't care */, env_options));
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Random r(301);
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Status s;
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std::unique_ptr<char[]> large_buf(new char[10 * kMb]);
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for (int i = 0; i < 1000; i++) {
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int skew_limit = (i < 700) ? 10 : 15;
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uint32_t num = r.Skewed(skew_limit) * 100 + r.Uniform(100);
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s = writer->Append(Slice(large_buf.get(), num));
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ASSERT_OK(s);
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// Flush in a chance of 1/10.
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if (r.Uniform(10) == 0) {
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s = writer->Flush();
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ASSERT_OK(s);
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}
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}
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s = writer->Close();
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ASSERT_OK(s);
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}
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TEST_F(WritableFileWriterTest, IncrementalBuffer) {
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class FakeWF : public FSWritableFile {
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public:
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explicit FakeWF(std::string* _file_data, bool _use_direct_io,
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bool _no_flush)
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: file_data_(_file_data),
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use_direct_io_(_use_direct_io),
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no_flush_(_no_flush) {}
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~FakeWF() override {}
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using FSWritableFile::Append;
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IOStatus Append(const Slice& data, const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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file_data_->append(data.data(), data.size());
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size_ += data.size();
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return IOStatus::OK();
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}
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using FSWritableFile::PositionedAppend;
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IOStatus PositionedAppend(const Slice& data, uint64_t pos,
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const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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EXPECT_TRUE(pos % 512 == 0);
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EXPECT_TRUE(data.size() % 512 == 0);
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file_data_->resize(pos);
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file_data_->append(data.data(), data.size());
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size_ += data.size();
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return IOStatus::OK();
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}
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IOStatus Truncate(uint64_t size, const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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file_data_->resize(size);
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return IOStatus::OK();
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}
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IOStatus Close(const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return IOStatus::OK();
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}
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IOStatus Flush(const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return IOStatus::OK();
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}
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IOStatus Sync(const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return IOStatus::OK();
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}
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IOStatus Fsync(const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return IOStatus::OK();
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}
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void SetIOPriority(Env::IOPriority /*pri*/) override {}
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uint64_t GetFileSize(const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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return size_;
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}
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void GetPreallocationStatus(size_t* /*block_size*/,
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size_t* /*last_allocated_block*/) override {}
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size_t GetUniqueId(char* /*id*/, size_t /*max_size*/) const override {
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return 0;
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}
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IOStatus InvalidateCache(size_t /*offset*/, size_t /*length*/) override {
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return IOStatus::OK();
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}
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bool use_direct_io() const override { return use_direct_io_; }
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std::string* file_data_;
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bool use_direct_io_;
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bool no_flush_;
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size_t size_ = 0;
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};
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Random r(301);
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const int kNumAttempts = 50;
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for (int attempt = 0; attempt < kNumAttempts; attempt++) {
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bool no_flush = (attempt % 3 == 0);
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EnvOptions env_options;
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env_options.writable_file_max_buffer_size =
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(attempt < kNumAttempts / 2) ? 512 * 1024 : 700 * 1024;
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std::string actual;
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std::unique_ptr<FakeWF> wf(new FakeWF(&actual,
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attempt % 2 == 1,
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no_flush));
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std::unique_ptr<WritableFileWriter> writer(new WritableFileWriter(
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std::move(wf), "" /* don't care */, env_options));
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std::string target;
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for (int i = 0; i < 20; i++) {
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uint32_t num = r.Skewed(16) * 100 + r.Uniform(100);
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std::string random_string = r.RandomString(num);
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ASSERT_OK(writer->Append(Slice(random_string.c_str(), num)));
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target.append(random_string.c_str(), num);
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// In some attempts, flush in a chance of 1/10.
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if (!no_flush && r.Uniform(10) == 0) {
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ASSERT_OK(writer->Flush());
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}
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}
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ASSERT_OK(writer->Flush());
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ASSERT_OK(writer->Close());
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ASSERT_EQ(target.size(), actual.size());
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ASSERT_EQ(target, actual);
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}
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}
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TEST_F(WritableFileWriterTest, BufferWithZeroCapacityDirectIO) {
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EnvOptions env_opts;
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env_opts.use_direct_writes = true;
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env_opts.writable_file_max_buffer_size = 0;
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{
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std::unique_ptr<WritableFileWriter> writer;
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const Status s =
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WritableFileWriter::Create(FileSystem::Default(), /*fname=*/"dont_care",
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FileOptions(env_opts), &writer,
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/*dbg=*/nullptr);
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ASSERT_TRUE(s.IsInvalidArgument());
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}
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}
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class DBWritableFileWriterTest : public DBTestBase {
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public:
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DBWritableFileWriterTest()
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: DBTestBase("db_secondary_cache_test", /*env_do_fsync=*/true) {
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fault_fs_.reset(new FaultInjectionTestFS(env_->GetFileSystem()));
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fault_env_.reset(new CompositeEnvWrapper(env_, fault_fs_));
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}
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std::shared_ptr<FaultInjectionTestFS> fault_fs_;
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std::unique_ptr<Env> fault_env_;
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};
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TEST_F(DBWritableFileWriterTest, AppendWithChecksum) {
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FileOptions file_options = FileOptions();
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Options options = GetDefaultOptions();
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options.create_if_missing = true;
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DestroyAndReopen(options);
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std::string fname = dbname_ + "/test_file";
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std::unique_ptr<FSWritableFile> writable_file_ptr;
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ASSERT_OK(fault_fs_->NewWritableFile(fname, file_options, &writable_file_ptr,
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/*dbg*/ nullptr));
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std::unique_ptr<TestFSWritableFile> file;
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file.reset(new TestFSWritableFile(
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fname, file_options, std::move(writable_file_ptr), fault_fs_.get()));
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std::unique_ptr<WritableFileWriter> file_writer;
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ImmutableOptions ioptions(options);
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file_writer.reset(new WritableFileWriter(
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std::move(file), fname, file_options, SystemClock::Default().get(),
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nullptr, ioptions.stats, ioptions.listeners,
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ioptions.file_checksum_gen_factory.get(), true, true));
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Random rnd(301);
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std::string data = rnd.RandomString(1000);
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uint32_t data_crc32c = crc32c::Value(data.c_str(), data.size());
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fault_fs_->SetChecksumHandoffFuncType(ChecksumType::kCRC32c);
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ASSERT_OK(file_writer->Append(Slice(data.c_str()), data_crc32c));
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ASSERT_OK(file_writer->Flush());
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Random size_r(47);
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for (int i = 0; i < 2000; i++) {
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data = rnd.RandomString((static_cast<int>(size_r.Next()) % 10000));
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data_crc32c = crc32c::Value(data.c_str(), data.size());
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ASSERT_OK(file_writer->Append(Slice(data.c_str()), data_crc32c));
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data = rnd.RandomString((static_cast<int>(size_r.Next()) % 97));
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ASSERT_OK(file_writer->Append(Slice(data.c_str())));
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ASSERT_OK(file_writer->Flush());
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}
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ASSERT_OK(file_writer->Close());
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Destroy(options);
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}
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TEST_F(DBWritableFileWriterTest, AppendVerifyNoChecksum) {
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FileOptions file_options = FileOptions();
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Options options = GetDefaultOptions();
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options.create_if_missing = true;
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DestroyAndReopen(options);
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std::string fname = dbname_ + "/test_file";
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std::unique_ptr<FSWritableFile> writable_file_ptr;
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ASSERT_OK(fault_fs_->NewWritableFile(fname, file_options, &writable_file_ptr,
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/*dbg*/ nullptr));
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std::unique_ptr<TestFSWritableFile> file;
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file.reset(new TestFSWritableFile(
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fname, file_options, std::move(writable_file_ptr), fault_fs_.get()));
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std::unique_ptr<WritableFileWriter> file_writer;
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ImmutableOptions ioptions(options);
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// Enable checksum handoff for this file, but do not enable buffer checksum.
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// So Append with checksum logic will not be triggered
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file_writer.reset(new WritableFileWriter(
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std::move(file), fname, file_options, SystemClock::Default().get(),
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nullptr, ioptions.stats, ioptions.listeners,
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ioptions.file_checksum_gen_factory.get(), true, false));
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Random rnd(301);
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std::string data = rnd.RandomString(1000);
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uint32_t data_crc32c = crc32c::Value(data.c_str(), data.size());
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fault_fs_->SetChecksumHandoffFuncType(ChecksumType::kCRC32c);
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ASSERT_OK(file_writer->Append(Slice(data.c_str()), data_crc32c));
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ASSERT_OK(file_writer->Flush());
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Random size_r(47);
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for (int i = 0; i < 1000; i++) {
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data = rnd.RandomString((static_cast<int>(size_r.Next()) % 10000));
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data_crc32c = crc32c::Value(data.c_str(), data.size());
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ASSERT_OK(file_writer->Append(Slice(data.c_str()), data_crc32c));
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data = rnd.RandomString((static_cast<int>(size_r.Next()) % 97));
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ASSERT_OK(file_writer->Append(Slice(data.c_str())));
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ASSERT_OK(file_writer->Flush());
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}
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ASSERT_OK(file_writer->Close());
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Destroy(options);
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}
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TEST_F(DBWritableFileWriterTest, AppendWithChecksumRateLimiter) {
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FileOptions file_options = FileOptions();
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file_options.rate_limiter = nullptr;
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Options options = GetDefaultOptions();
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options.create_if_missing = true;
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DestroyAndReopen(options);
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std::string fname = dbname_ + "/test_file";
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std::unique_ptr<FSWritableFile> writable_file_ptr;
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ASSERT_OK(fault_fs_->NewWritableFile(fname, file_options, &writable_file_ptr,
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/*dbg*/ nullptr));
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std::unique_ptr<TestFSWritableFile> file;
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file.reset(new TestFSWritableFile(
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fname, file_options, std::move(writable_file_ptr), fault_fs_.get()));
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std::unique_ptr<WritableFileWriter> file_writer;
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ImmutableOptions ioptions(options);
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// Enable checksum handoff for this file, but do not enable buffer checksum.
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// So Append with checksum logic will not be triggered
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file_writer.reset(new WritableFileWriter(
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std::move(file), fname, file_options, SystemClock::Default().get(),
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nullptr, ioptions.stats, ioptions.listeners,
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ioptions.file_checksum_gen_factory.get(), true, true));
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fault_fs_->SetChecksumHandoffFuncType(ChecksumType::kCRC32c);
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Random rnd(301);
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std::string data;
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uint32_t data_crc32c;
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uint64_t start = fault_env_->NowMicros();
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Random size_r(47);
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uint64_t bytes_written = 0;
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for (int i = 0; i < 100; i++) {
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data = rnd.RandomString((static_cast<int>(size_r.Next()) % 10000));
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data_crc32c = crc32c::Value(data.c_str(), data.size());
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ASSERT_OK(file_writer->Append(Slice(data.c_str()), data_crc32c));
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bytes_written += static_cast<uint64_t>(data.size());
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data = rnd.RandomString((static_cast<int>(size_r.Next()) % 97));
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ASSERT_OK(file_writer->Append(Slice(data.c_str())));
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ASSERT_OK(file_writer->Flush());
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bytes_written += static_cast<uint64_t>(data.size());
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}
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uint64_t elapsed = fault_env_->NowMicros() - start;
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double raw_rate = bytes_written * 1000000.0 / elapsed;
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ASSERT_OK(file_writer->Close());
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// Set the rate-limiter
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FileOptions file_options1 = FileOptions();
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file_options1.rate_limiter =
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NewGenericRateLimiter(static_cast<int64_t>(0.5 * raw_rate));
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fname = dbname_ + "/test_file_1";
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std::unique_ptr<FSWritableFile> writable_file_ptr1;
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ASSERT_OK(fault_fs_->NewWritableFile(fname, file_options1,
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&writable_file_ptr1,
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/*dbg*/ nullptr));
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file.reset(new TestFSWritableFile(
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fname, file_options1, std::move(writable_file_ptr1), fault_fs_.get()));
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// Enable checksum handoff for this file, but do not enable buffer checksum.
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// So Append with checksum logic will not be triggered
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file_writer.reset(new WritableFileWriter(
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std::move(file), fname, file_options1, SystemClock::Default().get(),
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nullptr, ioptions.stats, ioptions.listeners,
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ioptions.file_checksum_gen_factory.get(), true, true));
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for (int i = 0; i < 1000; i++) {
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data = rnd.RandomString((static_cast<int>(size_r.Next()) % 10000));
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data_crc32c = crc32c::Value(data.c_str(), data.size());
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ASSERT_OK(file_writer->Append(Slice(data.c_str()), data_crc32c));
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data = rnd.RandomString((static_cast<int>(size_r.Next()) % 97));
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ASSERT_OK(file_writer->Append(Slice(data.c_str())));
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ASSERT_OK(file_writer->Flush());
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}
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ASSERT_OK(file_writer->Close());
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if (file_options1.rate_limiter != nullptr) {
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delete file_options1.rate_limiter;
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}
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Destroy(options);
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}
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TEST_F(WritableFileWriterTest, AppendStatusReturn) {
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class FakeWF : public FSWritableFile {
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public:
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explicit FakeWF() : use_direct_io_(false), io_error_(false) {}
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bool use_direct_io() const override { return use_direct_io_; }
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using FSWritableFile::Append;
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IOStatus Append(const Slice& /*data*/, const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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if (io_error_) {
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return IOStatus::IOError("Fake IO error");
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}
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return IOStatus::OK();
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}
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using FSWritableFile::PositionedAppend;
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IOStatus PositionedAppend(const Slice& /*data*/, uint64_t,
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const IOOptions& /*options*/,
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IODebugContext* /*dbg*/) override {
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|
if (io_error_) {
|
|
return IOStatus::IOError("Fake IO error");
|
|
}
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus Close(const IOOptions& /*options*/,
|
|
IODebugContext* /*dbg*/) override {
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus Flush(const IOOptions& /*options*/,
|
|
IODebugContext* /*dbg*/) override {
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus Sync(const IOOptions& /*options*/,
|
|
IODebugContext* /*dbg*/) override {
|
|
return IOStatus::OK();
|
|
}
|
|
void Setuse_direct_io(bool val) { use_direct_io_ = val; }
|
|
void SetIOError(bool val) { io_error_ = val; }
|
|
|
|
protected:
|
|
bool use_direct_io_;
|
|
bool io_error_;
|
|
};
|
|
std::unique_ptr<FakeWF> wf(new FakeWF());
|
|
wf->Setuse_direct_io(true);
|
|
std::unique_ptr<WritableFileWriter> writer(
|
|
new WritableFileWriter(std::move(wf), "" /* don't care */, EnvOptions()));
|
|
|
|
ASSERT_OK(writer->Append(std::string(2 * kMb, 'a')));
|
|
|
|
// Next call to WritableFile::Append() should fail
|
|
FakeWF* fwf = static_cast<FakeWF*>(writer->writable_file());
|
|
fwf->SetIOError(true);
|
|
ASSERT_NOK(writer->Append(std::string(2 * kMb, 'b')));
|
|
}
|
|
|
|
class ReadaheadRandomAccessFileTest
|
|
: public testing::Test,
|
|
public testing::WithParamInterface<size_t> {
|
|
public:
|
|
static std::vector<size_t> GetReadaheadSizeList() {
|
|
return {1lu << 12, 1lu << 16};
|
|
}
|
|
void SetUp() override {
|
|
readahead_size_ = GetParam();
|
|
scratch_.reset(new char[2 * readahead_size_]);
|
|
ResetSourceStr();
|
|
}
|
|
ReadaheadRandomAccessFileTest() : control_contents_() {}
|
|
std::string Read(uint64_t offset, size_t n) {
|
|
Slice result;
|
|
Status s = test_read_holder_->Read(offset, n, IOOptions(), &result,
|
|
scratch_.get(), nullptr);
|
|
EXPECT_TRUE(s.ok() || s.IsInvalidArgument());
|
|
return std::string(result.data(), result.size());
|
|
}
|
|
void ResetSourceStr(const std::string& str = "") {
|
|
std::unique_ptr<FSWritableFile> sink(
|
|
new test::StringSink(&control_contents_));
|
|
std::unique_ptr<WritableFileWriter> write_holder(new WritableFileWriter(
|
|
std::move(sink), "" /* don't care */, FileOptions()));
|
|
Status s = write_holder->Append(Slice(str));
|
|
EXPECT_OK(s);
|
|
s = write_holder->Flush();
|
|
EXPECT_OK(s);
|
|
std::unique_ptr<FSRandomAccessFile> read_holder(
|
|
new test::StringSource(control_contents_));
|
|
test_read_holder_ =
|
|
NewReadaheadRandomAccessFile(std::move(read_holder), readahead_size_);
|
|
}
|
|
size_t GetReadaheadSize() const { return readahead_size_; }
|
|
|
|
private:
|
|
size_t readahead_size_;
|
|
Slice control_contents_;
|
|
std::unique_ptr<FSRandomAccessFile> test_read_holder_;
|
|
std::unique_ptr<char[]> scratch_;
|
|
};
|
|
|
|
TEST_P(ReadaheadRandomAccessFileTest, EmptySourceStr) {
|
|
ASSERT_EQ("", Read(0, 1));
|
|
ASSERT_EQ("", Read(0, 0));
|
|
ASSERT_EQ("", Read(13, 13));
|
|
}
|
|
|
|
TEST_P(ReadaheadRandomAccessFileTest, SourceStrLenLessThanReadaheadSize) {
|
|
std::string str = "abcdefghijklmnopqrs";
|
|
ResetSourceStr(str);
|
|
ASSERT_EQ(str.substr(3, 4), Read(3, 4));
|
|
ASSERT_EQ(str.substr(0, 3), Read(0, 3));
|
|
ASSERT_EQ(str, Read(0, str.size()));
|
|
ASSERT_EQ(str.substr(7, std::min(static_cast<int>(str.size()) - 7, 30)),
|
|
Read(7, 30));
|
|
ASSERT_EQ("", Read(100, 100));
|
|
}
|
|
|
|
TEST_P(ReadaheadRandomAccessFileTest, SourceStrLenGreaterThanReadaheadSize) {
|
|
Random rng(42);
|
|
for (int k = 0; k < 100; ++k) {
|
|
size_t strLen = k * GetReadaheadSize() +
|
|
rng.Uniform(static_cast<int>(GetReadaheadSize()));
|
|
std::string str = rng.HumanReadableString(static_cast<int>(strLen));
|
|
ResetSourceStr(str);
|
|
for (int test = 1; test <= 100; ++test) {
|
|
size_t offset = rng.Uniform(static_cast<int>(strLen));
|
|
size_t n = rng.Uniform(static_cast<int>(GetReadaheadSize()));
|
|
ASSERT_EQ(str.substr(offset, std::min(n, strLen - offset)),
|
|
Read(offset, n));
|
|
}
|
|
}
|
|
}
|
|
|
|
TEST_P(ReadaheadRandomAccessFileTest, ReadExceedsReadaheadSize) {
|
|
Random rng(7);
|
|
size_t strLen = 4 * GetReadaheadSize() +
|
|
rng.Uniform(static_cast<int>(GetReadaheadSize()));
|
|
std::string str = rng.HumanReadableString(static_cast<int>(strLen));
|
|
ResetSourceStr(str);
|
|
for (int test = 1; test <= 100; ++test) {
|
|
size_t offset = rng.Uniform(static_cast<int>(strLen));
|
|
size_t n =
|
|
GetReadaheadSize() + rng.Uniform(static_cast<int>(GetReadaheadSize()));
|
|
ASSERT_EQ(str.substr(offset, std::min(n, strLen - offset)),
|
|
Read(offset, n));
|
|
}
|
|
}
|
|
|
|
INSTANTIATE_TEST_CASE_P(
|
|
EmptySourceStr, ReadaheadRandomAccessFileTest,
|
|
::testing::ValuesIn(ReadaheadRandomAccessFileTest::GetReadaheadSizeList()));
|
|
INSTANTIATE_TEST_CASE_P(
|
|
SourceStrLenLessThanReadaheadSize, ReadaheadRandomAccessFileTest,
|
|
::testing::ValuesIn(ReadaheadRandomAccessFileTest::GetReadaheadSizeList()));
|
|
INSTANTIATE_TEST_CASE_P(
|
|
SourceStrLenGreaterThanReadaheadSize, ReadaheadRandomAccessFileTest,
|
|
::testing::ValuesIn(ReadaheadRandomAccessFileTest::GetReadaheadSizeList()));
|
|
INSTANTIATE_TEST_CASE_P(
|
|
ReadExceedsReadaheadSize, ReadaheadRandomAccessFileTest,
|
|
::testing::ValuesIn(ReadaheadRandomAccessFileTest::GetReadaheadSizeList()));
|
|
|
|
class ReadaheadSequentialFileTest : public testing::Test,
|
|
public testing::WithParamInterface<size_t> {
|
|
public:
|
|
static std::vector<size_t> GetReadaheadSizeList() {
|
|
return {1lu << 8, 1lu << 12, 1lu << 16, 1lu << 18};
|
|
}
|
|
void SetUp() override {
|
|
readahead_size_ = GetParam();
|
|
scratch_.reset(new char[2 * readahead_size_]);
|
|
ResetSourceStr();
|
|
}
|
|
ReadaheadSequentialFileTest() {}
|
|
std::string Read(size_t n) {
|
|
Slice result;
|
|
Status s = test_read_holder_->Read(
|
|
n, &result, scratch_.get(), Env::IO_TOTAL /* rate_limiter_priority*/);
|
|
EXPECT_TRUE(s.ok() || s.IsInvalidArgument());
|
|
return std::string(result.data(), result.size());
|
|
}
|
|
void Skip(size_t n) { test_read_holder_->Skip(n); }
|
|
void ResetSourceStr(const std::string& str = "") {
|
|
auto read_holder = std::unique_ptr<FSSequentialFile>(
|
|
new test::SeqStringSource(str, &seq_read_count_));
|
|
test_read_holder_.reset(new SequentialFileReader(std::move(read_holder),
|
|
"test", readahead_size_));
|
|
}
|
|
size_t GetReadaheadSize() const { return readahead_size_; }
|
|
|
|
private:
|
|
size_t readahead_size_;
|
|
std::unique_ptr<SequentialFileReader> test_read_holder_;
|
|
std::unique_ptr<char[]> scratch_;
|
|
std::atomic<int> seq_read_count_;
|
|
};
|
|
|
|
TEST_P(ReadaheadSequentialFileTest, EmptySourceStr) {
|
|
ASSERT_EQ("", Read(0));
|
|
ASSERT_EQ("", Read(1));
|
|
ASSERT_EQ("", Read(13));
|
|
}
|
|
|
|
TEST_P(ReadaheadSequentialFileTest, SourceStrLenLessThanReadaheadSize) {
|
|
std::string str = "abcdefghijklmnopqrs";
|
|
ResetSourceStr(str);
|
|
ASSERT_EQ(str.substr(0, 3), Read(3));
|
|
ASSERT_EQ(str.substr(3, 1), Read(1));
|
|
ASSERT_EQ(str.substr(4), Read(str.size()));
|
|
ASSERT_EQ("", Read(100));
|
|
}
|
|
|
|
TEST_P(ReadaheadSequentialFileTest, SourceStrLenGreaterThanReadaheadSize) {
|
|
Random rng(42);
|
|
for (int s = 0; s < 1; ++s) {
|
|
for (int k = 0; k < 100; ++k) {
|
|
size_t strLen = k * GetReadaheadSize() +
|
|
rng.Uniform(static_cast<int>(GetReadaheadSize()));
|
|
std::string str = rng.HumanReadableString(static_cast<int>(strLen));
|
|
ResetSourceStr(str);
|
|
size_t offset = 0;
|
|
for (int test = 1; test <= 100; ++test) {
|
|
size_t n = rng.Uniform(static_cast<int>(GetReadaheadSize()));
|
|
if (s && test % 2) {
|
|
Skip(n);
|
|
} else {
|
|
ASSERT_EQ(str.substr(offset, std::min(n, strLen - offset)), Read(n));
|
|
}
|
|
offset = std::min(offset + n, strLen);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
TEST_P(ReadaheadSequentialFileTest, ReadExceedsReadaheadSize) {
|
|
Random rng(42);
|
|
for (int s = 0; s < 1; ++s) {
|
|
for (int k = 0; k < 100; ++k) {
|
|
size_t strLen = k * GetReadaheadSize() +
|
|
rng.Uniform(static_cast<int>(GetReadaheadSize()));
|
|
std::string str = rng.HumanReadableString(static_cast<int>(strLen));
|
|
ResetSourceStr(str);
|
|
size_t offset = 0;
|
|
for (int test = 1; test <= 100; ++test) {
|
|
size_t n = GetReadaheadSize() +
|
|
rng.Uniform(static_cast<int>(GetReadaheadSize()));
|
|
if (s && test % 2) {
|
|
Skip(n);
|
|
} else {
|
|
ASSERT_EQ(str.substr(offset, std::min(n, strLen - offset)), Read(n));
|
|
}
|
|
offset = std::min(offset + n, strLen);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
INSTANTIATE_TEST_CASE_P(
|
|
EmptySourceStr, ReadaheadSequentialFileTest,
|
|
::testing::ValuesIn(ReadaheadSequentialFileTest::GetReadaheadSizeList()));
|
|
INSTANTIATE_TEST_CASE_P(
|
|
SourceStrLenLessThanReadaheadSize, ReadaheadSequentialFileTest,
|
|
::testing::ValuesIn(ReadaheadSequentialFileTest::GetReadaheadSizeList()));
|
|
INSTANTIATE_TEST_CASE_P(
|
|
SourceStrLenGreaterThanReadaheadSize, ReadaheadSequentialFileTest,
|
|
::testing::ValuesIn(ReadaheadSequentialFileTest::GetReadaheadSizeList()));
|
|
INSTANTIATE_TEST_CASE_P(
|
|
ReadExceedsReadaheadSize, ReadaheadSequentialFileTest,
|
|
::testing::ValuesIn(ReadaheadSequentialFileTest::GetReadaheadSizeList()));
|
|
|
|
namespace {
|
|
std::string GenerateLine(int n) {
|
|
std::string rv;
|
|
// Multiples of 17 characters per line, for likely bad buffer alignment
|
|
for (int i = 0; i < n; ++i) {
|
|
rv.push_back(static_cast<char>('0' + (i % 10)));
|
|
rv.append("xxxxxxxxxxxxxxxx");
|
|
}
|
|
return rv;
|
|
}
|
|
} // namespace
|
|
|
|
TEST(LineFileReaderTest, LineFileReaderTest) {
|
|
const int nlines = 1000;
|
|
|
|
std::unique_ptr<Env> mem_env(MockEnv::Create(Env::Default()));
|
|
std::shared_ptr<FileSystem> fs = mem_env->GetFileSystem();
|
|
// Create an input file
|
|
{
|
|
std::unique_ptr<FSWritableFile> file;
|
|
ASSERT_OK(
|
|
fs->NewWritableFile("testfile", FileOptions(), &file, /*dbg*/ nullptr));
|
|
|
|
for (int i = 0; i < nlines; ++i) {
|
|
std::string line = GenerateLine(i);
|
|
line.push_back('\n');
|
|
ASSERT_OK(file->Append(line, IOOptions(), /*dbg*/ nullptr));
|
|
}
|
|
}
|
|
|
|
// Verify with no I/O errors
|
|
{
|
|
std::unique_ptr<LineFileReader> reader;
|
|
ASSERT_OK(LineFileReader::Create(fs, "testfile", FileOptions(), &reader,
|
|
nullptr /* dbg */,
|
|
nullptr /* rate_limiter */));
|
|
std::string line;
|
|
int count = 0;
|
|
while (reader->ReadLine(&line, Env::IO_TOTAL /* rate_limiter_priority */)) {
|
|
ASSERT_EQ(line, GenerateLine(count));
|
|
++count;
|
|
ASSERT_EQ(static_cast<int>(reader->GetLineNumber()), count);
|
|
}
|
|
ASSERT_OK(reader->GetStatus());
|
|
ASSERT_EQ(count, nlines);
|
|
ASSERT_EQ(static_cast<int>(reader->GetLineNumber()), count);
|
|
// And still
|
|
ASSERT_FALSE(
|
|
reader->ReadLine(&line, Env::IO_TOTAL /* rate_limiter_priority */));
|
|
ASSERT_OK(reader->GetStatus());
|
|
ASSERT_EQ(static_cast<int>(reader->GetLineNumber()), count);
|
|
}
|
|
|
|
// Verify with injected I/O error
|
|
{
|
|
std::unique_ptr<LineFileReader> reader;
|
|
ASSERT_OK(LineFileReader::Create(fs, "testfile", FileOptions(), &reader,
|
|
nullptr /* dbg */,
|
|
nullptr /* rate_limiter */));
|
|
std::string line;
|
|
int count = 0;
|
|
// Read part way through the file
|
|
while (count < nlines / 4) {
|
|
ASSERT_TRUE(
|
|
reader->ReadLine(&line, Env::IO_TOTAL /* rate_limiter_priority */));
|
|
ASSERT_EQ(line, GenerateLine(count));
|
|
++count;
|
|
ASSERT_EQ(static_cast<int>(reader->GetLineNumber()), count);
|
|
}
|
|
ASSERT_OK(reader->GetStatus());
|
|
|
|
// Inject error
|
|
int callback_count = 0;
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
"MemFile::Read:IOStatus", [&](void* arg) {
|
|
IOStatus* status = static_cast<IOStatus*>(arg);
|
|
*status = IOStatus::Corruption("test");
|
|
++callback_count;
|
|
});
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
while (reader->ReadLine(&line, Env::IO_TOTAL /* rate_limiter_priority */)) {
|
|
ASSERT_EQ(line, GenerateLine(count));
|
|
++count;
|
|
ASSERT_EQ(static_cast<int>(reader->GetLineNumber()), count);
|
|
}
|
|
ASSERT_TRUE(reader->GetStatus().IsCorruption());
|
|
ASSERT_LT(count, nlines / 2);
|
|
ASSERT_EQ(callback_count, 1);
|
|
|
|
// Still get error & no retry
|
|
ASSERT_FALSE(
|
|
reader->ReadLine(&line, Env::IO_TOTAL /* rate_limiter_priority */));
|
|
ASSERT_TRUE(reader->GetStatus().IsCorruption());
|
|
ASSERT_EQ(callback_count, 1);
|
|
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
SyncPoint::GetInstance()->ClearAllCallBacks();
|
|
}
|
|
}
|
|
|
|
class IOErrorEventListener : public EventListener {
|
|
public:
|
|
IOErrorEventListener() { notify_error_.store(0); }
|
|
|
|
void OnIOError(const IOErrorInfo& io_error_info) override {
|
|
notify_error_++;
|
|
EXPECT_FALSE(io_error_info.file_path.empty());
|
|
EXPECT_FALSE(io_error_info.io_status.ok());
|
|
}
|
|
|
|
size_t NotifyErrorCount() { return notify_error_; }
|
|
|
|
bool ShouldBeNotifiedOnFileIO() override { return true; }
|
|
|
|
private:
|
|
std::atomic<size_t> notify_error_;
|
|
};
|
|
|
|
TEST_F(DBWritableFileWriterTest, IOErrorNotification) {
|
|
class FakeWF : public FSWritableFile {
|
|
public:
|
|
explicit FakeWF() : io_error_(false) {
|
|
file_append_errors_.store(0);
|
|
file_flush_errors_.store(0);
|
|
}
|
|
|
|
using FSWritableFile::Append;
|
|
IOStatus Append(const Slice& /*data*/, const IOOptions& /*options*/,
|
|
IODebugContext* /*dbg*/) override {
|
|
if (io_error_) {
|
|
file_append_errors_++;
|
|
return IOStatus::IOError("Fake IO error");
|
|
}
|
|
return IOStatus::OK();
|
|
}
|
|
|
|
using FSWritableFile::PositionedAppend;
|
|
IOStatus PositionedAppend(const Slice& /*data*/, uint64_t,
|
|
const IOOptions& /*options*/,
|
|
IODebugContext* /*dbg*/) override {
|
|
if (io_error_) {
|
|
return IOStatus::IOError("Fake IO error");
|
|
}
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus Close(const IOOptions& /*options*/,
|
|
IODebugContext* /*dbg*/) override {
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus Flush(const IOOptions& /*options*/,
|
|
IODebugContext* /*dbg*/) override {
|
|
if (io_error_) {
|
|
file_flush_errors_++;
|
|
return IOStatus::IOError("Fake IO error");
|
|
}
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus Sync(const IOOptions& /*options*/,
|
|
IODebugContext* /*dbg*/) override {
|
|
return IOStatus::OK();
|
|
}
|
|
|
|
void SetIOError(bool val) { io_error_ = val; }
|
|
|
|
void CheckCounters(int file_append_errors, int file_flush_errors) {
|
|
ASSERT_EQ(file_append_errors, file_append_errors_);
|
|
ASSERT_EQ(file_flush_errors_, file_flush_errors);
|
|
}
|
|
|
|
protected:
|
|
bool io_error_;
|
|
std::atomic<size_t> file_append_errors_;
|
|
std::atomic<size_t> file_flush_errors_;
|
|
};
|
|
|
|
FileOptions file_options = FileOptions();
|
|
Options options = GetDefaultOptions();
|
|
options.create_if_missing = true;
|
|
IOErrorEventListener* listener = new IOErrorEventListener();
|
|
options.listeners.emplace_back(listener);
|
|
|
|
DestroyAndReopen(options);
|
|
ImmutableOptions ioptions(options);
|
|
|
|
std::string fname = dbname_ + "/test_file";
|
|
std::unique_ptr<FakeWF> writable_file_ptr(new FakeWF);
|
|
|
|
std::unique_ptr<WritableFileWriter> file_writer;
|
|
writable_file_ptr->SetIOError(true);
|
|
|
|
file_writer.reset(new WritableFileWriter(
|
|
std::move(writable_file_ptr), fname, file_options,
|
|
SystemClock::Default().get(), nullptr, ioptions.stats, ioptions.listeners,
|
|
ioptions.file_checksum_gen_factory.get(), true, true));
|
|
|
|
FakeWF* fwf = static_cast<FakeWF*>(file_writer->writable_file());
|
|
|
|
fwf->SetIOError(true);
|
|
ASSERT_NOK(file_writer->Append(std::string(2 * kMb, 'a')));
|
|
fwf->CheckCounters(1, 0);
|
|
ASSERT_EQ(listener->NotifyErrorCount(), 1);
|
|
|
|
file_writer->reset_seen_error();
|
|
fwf->SetIOError(true);
|
|
ASSERT_NOK(file_writer->Flush());
|
|
fwf->CheckCounters(1, 1);
|
|
ASSERT_EQ(listener->NotifyErrorCount(), 2);
|
|
|
|
/* No error generation */
|
|
file_writer->reset_seen_error();
|
|
fwf->SetIOError(false);
|
|
ASSERT_OK(file_writer->Append(std::string(2 * kMb, 'b')));
|
|
ASSERT_EQ(listener->NotifyErrorCount(), 2);
|
|
fwf->CheckCounters(1, 1);
|
|
}
|
|
|
|
class WritableFileWriterIOPriorityTest : public testing::Test {
|
|
protected:
|
|
// This test is to check whether the rate limiter priority can be passed
|
|
// correctly from WritableFileWriter functions to FSWritableFile functions.
|
|
|
|
void SetUp() override {
|
|
// When op_rate_limiter_priority parameter in WritableFileWriter functions
|
|
// is the default (Env::IO_TOTAL).
|
|
std::unique_ptr<FakeWF> wf{new FakeWF(Env::IO_HIGH)};
|
|
FileOptions file_options;
|
|
writer_.reset(new WritableFileWriter(std::move(wf), "" /* don't care */,
|
|
file_options));
|
|
}
|
|
|
|
class FakeWF : public FSWritableFile {
|
|
public:
|
|
explicit FakeWF(Env::IOPriority io_priority) { SetIOPriority(io_priority); }
|
|
~FakeWF() override {}
|
|
|
|
IOStatus Append(const Slice& /*data*/, const IOOptions& options,
|
|
IODebugContext* /*dbg*/) override {
|
|
EXPECT_EQ(options.rate_limiter_priority, io_priority_);
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus Append(const Slice& data, const IOOptions& options,
|
|
const DataVerificationInfo& /* verification_info */,
|
|
IODebugContext* dbg) override {
|
|
return Append(data, options, dbg);
|
|
}
|
|
IOStatus PositionedAppend(const Slice& /*data*/, uint64_t /*offset*/,
|
|
const IOOptions& options,
|
|
IODebugContext* /*dbg*/) override {
|
|
EXPECT_EQ(options.rate_limiter_priority, io_priority_);
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus PositionedAppend(
|
|
const Slice& /* data */, uint64_t /* offset */,
|
|
const IOOptions& options,
|
|
const DataVerificationInfo& /* verification_info */,
|
|
IODebugContext* /*dbg*/) override {
|
|
EXPECT_EQ(options.rate_limiter_priority, io_priority_);
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus Truncate(uint64_t /*size*/, const IOOptions& options,
|
|
IODebugContext* /*dbg*/) override {
|
|
EXPECT_EQ(options.rate_limiter_priority, io_priority_);
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus Close(const IOOptions& options, IODebugContext* /*dbg*/) override {
|
|
EXPECT_EQ(options.rate_limiter_priority, io_priority_);
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus Flush(const IOOptions& options, IODebugContext* /*dbg*/) override {
|
|
EXPECT_EQ(options.rate_limiter_priority, io_priority_);
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus Sync(const IOOptions& options, IODebugContext* /*dbg*/) override {
|
|
EXPECT_EQ(options.rate_limiter_priority, io_priority_);
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus Fsync(const IOOptions& options, IODebugContext* /*dbg*/) override {
|
|
EXPECT_EQ(options.rate_limiter_priority, io_priority_);
|
|
return IOStatus::OK();
|
|
}
|
|
uint64_t GetFileSize(const IOOptions& options,
|
|
IODebugContext* /*dbg*/) override {
|
|
EXPECT_EQ(options.rate_limiter_priority, io_priority_);
|
|
return 0;
|
|
}
|
|
void GetPreallocationStatus(size_t* /*block_size*/,
|
|
size_t* /*last_allocated_block*/) override {}
|
|
size_t GetUniqueId(char* /*id*/, size_t /*max_size*/) const override {
|
|
return 0;
|
|
}
|
|
IOStatus InvalidateCache(size_t /*offset*/, size_t /*length*/) override {
|
|
return IOStatus::OK();
|
|
}
|
|
|
|
IOStatus Allocate(uint64_t /*offset*/, uint64_t /*len*/,
|
|
const IOOptions& options,
|
|
IODebugContext* /*dbg*/) override {
|
|
EXPECT_EQ(options.rate_limiter_priority, io_priority_);
|
|
return IOStatus::OK();
|
|
}
|
|
IOStatus RangeSync(uint64_t /*offset*/, uint64_t /*nbytes*/,
|
|
const IOOptions& options,
|
|
IODebugContext* /*dbg*/) override {
|
|
EXPECT_EQ(options.rate_limiter_priority, io_priority_);
|
|
return IOStatus::OK();
|
|
}
|
|
|
|
void PrepareWrite(size_t /*offset*/, size_t /*len*/,
|
|
const IOOptions& options,
|
|
IODebugContext* /*dbg*/) override {
|
|
EXPECT_EQ(options.rate_limiter_priority, io_priority_);
|
|
}
|
|
|
|
bool IsSyncThreadSafe() const override { return true; }
|
|
};
|
|
|
|
std::unique_ptr<WritableFileWriter> writer_;
|
|
};
|
|
|
|
TEST_F(WritableFileWriterIOPriorityTest, Append) {
|
|
ASSERT_OK(writer_->Append(Slice("abc")));
|
|
}
|
|
|
|
TEST_F(WritableFileWriterIOPriorityTest, Pad) { ASSERT_OK(writer_->Pad(500)); }
|
|
|
|
TEST_F(WritableFileWriterIOPriorityTest, Flush) { ASSERT_OK(writer_->Flush()); }
|
|
|
|
TEST_F(WritableFileWriterIOPriorityTest, Close) { ASSERT_OK(writer_->Close()); }
|
|
|
|
TEST_F(WritableFileWriterIOPriorityTest, Sync) {
|
|
ASSERT_OK(writer_->Sync(false));
|
|
ASSERT_OK(writer_->Sync(true));
|
|
}
|
|
|
|
TEST_F(WritableFileWriterIOPriorityTest, SyncWithoutFlush) {
|
|
ASSERT_OK(writer_->SyncWithoutFlush(false));
|
|
ASSERT_OK(writer_->SyncWithoutFlush(true));
|
|
}
|
|
|
|
TEST_F(WritableFileWriterIOPriorityTest, BasicOp) {
|
|
EnvOptions env_options;
|
|
env_options.bytes_per_sync = kMb;
|
|
std::unique_ptr<FakeWF> wf(new FakeWF(Env::IO_HIGH));
|
|
std::unique_ptr<WritableFileWriter> writer(
|
|
new WritableFileWriter(std::move(wf), "" /* don't care */, env_options));
|
|
Random r(301);
|
|
Status s;
|
|
std::unique_ptr<char[]> large_buf(new char[10 * kMb]);
|
|
for (int i = 0; i < 1000; i++) {
|
|
int skew_limit = (i < 700) ? 10 : 15;
|
|
uint32_t num = r.Skewed(skew_limit) * 100 + r.Uniform(100);
|
|
s = writer->Append(Slice(large_buf.get(), num));
|
|
ASSERT_OK(s);
|
|
|
|
// Flush in a chance of 1/10.
|
|
if (r.Uniform(10) == 0) {
|
|
s = writer->Flush();
|
|
ASSERT_OK(s);
|
|
}
|
|
}
|
|
s = writer->Close();
|
|
ASSERT_OK(s);
|
|
}
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|
|
int main(int argc, char** argv) {
|
|
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
return RUN_ALL_TESTS();
|
|
}
|