6924869867
Summary: Made SystemClock into a Customizable class, complete with CreateFromString. Cleaned up some of the existing SystemClock implementations that were redundant (NoSleep was the same as the internal one for MockEnv). Changed MockEnv construction to allow Clock to be passed to the Memory/MockFileSystem. Pull Request resolved: https://github.com/facebook/rocksdb/pull/8636 Reviewed By: zhichao-cao Differential Revision: D30483360 Pulled By: mrambacher fbshipit-source-id: cd0e3a876c39f8c98fe13374c06e8edbd5b9f2a1
269 lines
9.2 KiB
C++
269 lines
9.2 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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#include "db/blob/blob_file_cache.h"
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#include <cassert>
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#include <string>
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#include "db/blob/blob_log_format.h"
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#include "db/blob/blob_log_writer.h"
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#include "env/mock_env.h"
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#include "file/filename.h"
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#include "file/read_write_util.h"
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#include "file/writable_file_writer.h"
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#include "options/cf_options.h"
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#include "rocksdb/cache.h"
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#include "rocksdb/env.h"
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#include "rocksdb/file_system.h"
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#include "rocksdb/options.h"
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#include "rocksdb/statistics.h"
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#include "test_util/sync_point.h"
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#include "test_util/testharness.h"
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namespace ROCKSDB_NAMESPACE {
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namespace {
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// Creates a test blob file with a single blob in it.
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void WriteBlobFile(uint32_t column_family_id,
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const ImmutableOptions& immutable_options,
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uint64_t blob_file_number) {
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assert(!immutable_options.cf_paths.empty());
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const std::string blob_file_path =
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BlobFileName(immutable_options.cf_paths.front().path, blob_file_number);
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std::unique_ptr<FSWritableFile> file;
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ASSERT_OK(NewWritableFile(immutable_options.fs.get(), blob_file_path, &file,
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FileOptions()));
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std::unique_ptr<WritableFileWriter> file_writer(new WritableFileWriter(
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std::move(file), blob_file_path, FileOptions(), immutable_options.clock));
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constexpr Statistics* statistics = nullptr;
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constexpr bool use_fsync = false;
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constexpr bool do_flush = false;
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BlobLogWriter blob_log_writer(std::move(file_writer), immutable_options.clock,
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statistics, blob_file_number, use_fsync,
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do_flush);
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constexpr bool has_ttl = false;
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constexpr ExpirationRange expiration_range;
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BlobLogHeader header(column_family_id, kNoCompression, has_ttl,
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expiration_range);
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ASSERT_OK(blob_log_writer.WriteHeader(header));
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constexpr char key[] = "key";
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constexpr char blob[] = "blob";
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std::string compressed_blob;
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uint64_t key_offset = 0;
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uint64_t blob_offset = 0;
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ASSERT_OK(blob_log_writer.AddRecord(key, blob, &key_offset, &blob_offset));
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BlobLogFooter footer;
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footer.blob_count = 1;
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footer.expiration_range = expiration_range;
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std::string checksum_method;
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std::string checksum_value;
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ASSERT_OK(
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blob_log_writer.AppendFooter(footer, &checksum_method, &checksum_value));
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}
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} // anonymous namespace
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class BlobFileCacheTest : public testing::Test {
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protected:
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BlobFileCacheTest() { mock_env_.reset(MockEnv::Create(Env::Default())); }
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std::unique_ptr<Env> mock_env_;
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};
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TEST_F(BlobFileCacheTest, GetBlobFileReader) {
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Options options;
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options.env = mock_env_.get();
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options.statistics = CreateDBStatistics();
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options.cf_paths.emplace_back(
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test::PerThreadDBPath(mock_env_.get(),
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"BlobFileCacheTest_GetBlobFileReader"),
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0);
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options.enable_blob_files = true;
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constexpr uint32_t column_family_id = 1;
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ImmutableOptions immutable_options(options);
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constexpr uint64_t blob_file_number = 123;
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WriteBlobFile(column_family_id, immutable_options, blob_file_number);
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constexpr size_t capacity = 10;
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std::shared_ptr<Cache> backing_cache = NewLRUCache(capacity);
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FileOptions file_options;
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constexpr HistogramImpl* blob_file_read_hist = nullptr;
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BlobFileCache blob_file_cache(backing_cache.get(), &immutable_options,
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&file_options, column_family_id,
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blob_file_read_hist, nullptr /*IOTracer*/);
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// First try: reader should be opened and put in cache
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CacheHandleGuard<BlobFileReader> first;
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ASSERT_OK(blob_file_cache.GetBlobFileReader(blob_file_number, &first));
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ASSERT_NE(first.GetValue(), nullptr);
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ASSERT_EQ(options.statistics->getTickerCount(NO_FILE_OPENS), 1);
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ASSERT_EQ(options.statistics->getTickerCount(NO_FILE_ERRORS), 0);
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// Second try: reader should be served from cache
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CacheHandleGuard<BlobFileReader> second;
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ASSERT_OK(blob_file_cache.GetBlobFileReader(blob_file_number, &second));
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ASSERT_NE(second.GetValue(), nullptr);
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ASSERT_EQ(options.statistics->getTickerCount(NO_FILE_OPENS), 1);
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ASSERT_EQ(options.statistics->getTickerCount(NO_FILE_ERRORS), 0);
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ASSERT_EQ(first.GetValue(), second.GetValue());
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}
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TEST_F(BlobFileCacheTest, GetBlobFileReader_Race) {
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Options options;
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options.env = mock_env_.get();
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options.statistics = CreateDBStatistics();
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options.cf_paths.emplace_back(
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test::PerThreadDBPath(mock_env_.get(),
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"BlobFileCacheTest_GetBlobFileReader_Race"),
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0);
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options.enable_blob_files = true;
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constexpr uint32_t column_family_id = 1;
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ImmutableOptions immutable_options(options);
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constexpr uint64_t blob_file_number = 123;
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WriteBlobFile(column_family_id, immutable_options, blob_file_number);
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constexpr size_t capacity = 10;
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std::shared_ptr<Cache> backing_cache = NewLRUCache(capacity);
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FileOptions file_options;
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constexpr HistogramImpl* blob_file_read_hist = nullptr;
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BlobFileCache blob_file_cache(backing_cache.get(), &immutable_options,
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&file_options, column_family_id,
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blob_file_read_hist, nullptr /*IOTracer*/);
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CacheHandleGuard<BlobFileReader> first;
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CacheHandleGuard<BlobFileReader> second;
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SyncPoint::GetInstance()->SetCallBack(
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"BlobFileCache::GetBlobFileReader:DoubleCheck", [&](void* /* arg */) {
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// Disabling sync points to prevent infinite recursion
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SyncPoint::GetInstance()->DisableProcessing();
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ASSERT_OK(blob_file_cache.GetBlobFileReader(blob_file_number, &second));
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ASSERT_NE(second.GetValue(), nullptr);
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ASSERT_EQ(options.statistics->getTickerCount(NO_FILE_OPENS), 1);
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ASSERT_EQ(options.statistics->getTickerCount(NO_FILE_ERRORS), 0);
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});
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SyncPoint::GetInstance()->EnableProcessing();
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ASSERT_OK(blob_file_cache.GetBlobFileReader(blob_file_number, &first));
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ASSERT_NE(first.GetValue(), nullptr);
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ASSERT_EQ(options.statistics->getTickerCount(NO_FILE_OPENS), 1);
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ASSERT_EQ(options.statistics->getTickerCount(NO_FILE_ERRORS), 0);
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ASSERT_EQ(first.GetValue(), second.GetValue());
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SyncPoint::GetInstance()->DisableProcessing();
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SyncPoint::GetInstance()->ClearAllCallBacks();
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}
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TEST_F(BlobFileCacheTest, GetBlobFileReader_IOError) {
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Options options;
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options.env = mock_env_.get();
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options.statistics = CreateDBStatistics();
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options.cf_paths.emplace_back(
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test::PerThreadDBPath(mock_env_.get(),
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"BlobFileCacheTest_GetBlobFileReader_IOError"),
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0);
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options.enable_blob_files = true;
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constexpr size_t capacity = 10;
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std::shared_ptr<Cache> backing_cache = NewLRUCache(capacity);
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ImmutableOptions immutable_options(options);
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FileOptions file_options;
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constexpr uint32_t column_family_id = 1;
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constexpr HistogramImpl* blob_file_read_hist = nullptr;
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BlobFileCache blob_file_cache(backing_cache.get(), &immutable_options,
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&file_options, column_family_id,
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blob_file_read_hist, nullptr /*IOTracer*/);
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// Note: there is no blob file with the below number
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constexpr uint64_t blob_file_number = 123;
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CacheHandleGuard<BlobFileReader> reader;
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ASSERT_TRUE(
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blob_file_cache.GetBlobFileReader(blob_file_number, &reader).IsIOError());
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ASSERT_EQ(reader.GetValue(), nullptr);
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ASSERT_EQ(options.statistics->getTickerCount(NO_FILE_OPENS), 1);
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ASSERT_EQ(options.statistics->getTickerCount(NO_FILE_ERRORS), 1);
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}
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TEST_F(BlobFileCacheTest, GetBlobFileReader_CacheFull) {
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Options options;
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options.env = mock_env_.get();
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options.statistics = CreateDBStatistics();
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options.cf_paths.emplace_back(
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test::PerThreadDBPath(mock_env_.get(),
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"BlobFileCacheTest_GetBlobFileReader_CacheFull"),
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0);
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options.enable_blob_files = true;
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constexpr uint32_t column_family_id = 1;
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ImmutableOptions immutable_options(options);
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constexpr uint64_t blob_file_number = 123;
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WriteBlobFile(column_family_id, immutable_options, blob_file_number);
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constexpr size_t capacity = 0;
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constexpr int num_shard_bits = -1; // determined automatically
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constexpr bool strict_capacity_limit = true;
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std::shared_ptr<Cache> backing_cache =
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NewLRUCache(capacity, num_shard_bits, strict_capacity_limit);
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FileOptions file_options;
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constexpr HistogramImpl* blob_file_read_hist = nullptr;
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BlobFileCache blob_file_cache(backing_cache.get(), &immutable_options,
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&file_options, column_family_id,
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blob_file_read_hist, nullptr /*IOTracer*/);
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// Insert into cache should fail since it has zero capacity and
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// strict_capacity_limit is set
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CacheHandleGuard<BlobFileReader> reader;
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ASSERT_TRUE(blob_file_cache.GetBlobFileReader(blob_file_number, &reader)
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.IsIncomplete());
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ASSERT_EQ(reader.GetValue(), nullptr);
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ASSERT_EQ(options.statistics->getTickerCount(NO_FILE_OPENS), 1);
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ASSERT_EQ(options.statistics->getTickerCount(NO_FILE_ERRORS), 1);
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}
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} // namespace ROCKSDB_NAMESPACE
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int main(int argc, char** argv) {
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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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