fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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237 lines
8.4 KiB
237 lines
8.4 KiB
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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#include <map>
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#include <string>
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#include "db/compaction_job.h"
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#include "db/column_family.h"
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#include "db/version_set.h"
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#include "db/writebuffer.h"
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#include "rocksdb/cache.h"
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#include "rocksdb/options.h"
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#include "rocksdb/db.h"
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#include "util/string_util.h"
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#include "util/testharness.h"
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#include "util/testutil.h"
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#include "table/mock_table.h"
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namespace rocksdb {
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// TODO(icanadi) Make it simpler once we mock out VersionSet
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class CompactionJobTest : public testing::Test {
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public:
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CompactionJobTest()
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: env_(Env::Default()),
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dbname_(test::TmpDir() + "/compaction_job_test"),
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mutable_cf_options_(Options(), ImmutableCFOptions(Options())),
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table_cache_(NewLRUCache(50000, 16)),
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write_buffer_(db_options_.db_write_buffer_size),
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versions_(new VersionSet(dbname_, &db_options_, env_options_,
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table_cache_.get(), &write_buffer_,
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&write_controller_)),
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shutting_down_(false),
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mock_table_factory_(new mock::MockTableFactory()) {
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EXPECT_OK(env_->CreateDirIfMissing(dbname_));
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db_options_.db_paths.emplace_back(dbname_,
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std::numeric_limits<uint64_t>::max());
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NewDB();
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std::vector<ColumnFamilyDescriptor> column_families;
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cf_options_.table_factory = mock_table_factory_;
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column_families.emplace_back(kDefaultColumnFamilyName, cf_options_);
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EXPECT_OK(versions_->Recover(column_families, false));
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}
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std::string GenerateFileName(uint64_t file_number) {
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FileMetaData meta;
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std::vector<DbPath> db_paths;
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db_paths.emplace_back(dbname_, std::numeric_limits<uint64_t>::max());
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meta.fd = FileDescriptor(file_number, 0, 0);
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return TableFileName(db_paths, meta.fd.GetNumber(), meta.fd.GetPathId());
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}
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// returns expected result after compaction
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mock::MockFileContents CreateTwoFiles() {
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mock::MockFileContents expected_results;
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const int kKeysPerFile = 10000;
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SequenceNumber sequence_number = 0;
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for (int i = 0; i < 2; ++i) {
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mock::MockFileContents contents;
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SequenceNumber smallest_seqno = 0, largest_seqno = 0;
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InternalKey smallest, largest;
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for (int k = 0; k < kKeysPerFile; ++k) {
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auto key = ToString(i * (kKeysPerFile / 2) + k);
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auto value = ToString(i * kKeysPerFile + k);
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InternalKey internal_key(key, ++sequence_number, kTypeValue);
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// This is how the key will look like once it's written in bottommost
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// file
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InternalKey bottommost_internal_key(key, 0, kTypeValue);
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if (k == 0) {
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smallest = internal_key;
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smallest_seqno = sequence_number;
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} else if (k == kKeysPerFile - 1) {
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largest = internal_key;
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largest_seqno = sequence_number;
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}
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contents.insert({internal_key.Encode().ToString(), value});
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if (i == 1 || k < kKeysPerFile / 2) {
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expected_results.insert(
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{bottommost_internal_key.Encode().ToString(), value});
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}
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}
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uint64_t file_number = versions_->NewFileNumber();
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EXPECT_OK(mock_table_factory_->CreateMockTable(
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env_, GenerateFileName(file_number), std::move(contents)));
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VersionEdit edit;
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edit.AddFile(0, file_number, 0, 10, smallest, largest, smallest_seqno,
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largest_seqno, false);
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mutex_.Lock();
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versions_->LogAndApply(versions_->GetColumnFamilySet()->GetDefault(),
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mutable_cf_options_, &edit, &mutex_);
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mutex_.Unlock();
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}
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versions_->SetLastSequence(sequence_number + 1);
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return expected_results;
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}
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void NewDB() {
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VersionEdit new_db;
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new_db.SetLogNumber(0);
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new_db.SetNextFile(2);
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new_db.SetLastSequence(0);
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const std::string manifest = DescriptorFileName(dbname_, 1);
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unique_ptr<WritableFile> file;
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Status s = env_->NewWritableFile(
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manifest, &file, env_->OptimizeForManifestWrite(env_options_));
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ASSERT_OK(s);
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{
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log::Writer log(std::move(file));
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std::string record;
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new_db.EncodeTo(&record);
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s = log.AddRecord(record);
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}
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ASSERT_OK(s);
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// Make "CURRENT" file that points to the new manifest file.
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s = SetCurrentFile(env_, dbname_, 1, nullptr);
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}
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Env* env_;
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std::string dbname_;
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EnvOptions env_options_;
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MutableCFOptions mutable_cf_options_;
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std::shared_ptr<Cache> table_cache_;
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WriteController write_controller_;
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DBOptions db_options_;
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ColumnFamilyOptions cf_options_;
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WriteBuffer write_buffer_;
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std::unique_ptr<VersionSet> versions_;
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InstrumentedMutex mutex_;
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std::atomic<bool> shutting_down_;
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std::shared_ptr<mock::MockTableFactory> mock_table_factory_;
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};
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namespace {
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void VerifyInitializationOfCompactionJobStats(
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const CompactionJobStats& compaction_job_stats) {
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#if !defined(IOS_CROSS_COMPILE)
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ASSERT_EQ(compaction_job_stats.elapsed_micros, 0U);
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ASSERT_EQ(compaction_job_stats.num_input_records, 0U);
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ASSERT_EQ(compaction_job_stats.num_input_files, 0U);
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ASSERT_EQ(compaction_job_stats.num_input_files_at_output_level, 0U);
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ASSERT_EQ(compaction_job_stats.num_output_records, 0U);
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ASSERT_EQ(compaction_job_stats.num_output_files, 0U);
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ASSERT_EQ(compaction_job_stats.is_manual_compaction, 0U);
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ASSERT_EQ(compaction_job_stats.total_input_bytes, 0U);
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ASSERT_EQ(compaction_job_stats.total_output_bytes, 0U);
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ASSERT_EQ(compaction_job_stats.total_input_raw_key_bytes, 0U);
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ASSERT_EQ(compaction_job_stats.total_input_raw_value_bytes, 0U);
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ASSERT_EQ(compaction_job_stats.smallest_output_key_prefix[0], 0);
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ASSERT_EQ(compaction_job_stats.largest_output_key_prefix[0], 0);
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ASSERT_EQ(compaction_job_stats.num_records_replaced, 0U);
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#endif // !defined(IOS_CROSS_COMPILE)
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}
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void VerifyCompactionJobStats(
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const CompactionJobStats& compaction_job_stats,
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const std::vector<FileMetaData*>& files,
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size_t num_output_files,
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uint64_t min_elapsed_time) {
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ASSERT_GE(compaction_job_stats.elapsed_micros, min_elapsed_time);
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ASSERT_EQ(compaction_job_stats.num_input_files, files.size());
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ASSERT_EQ(compaction_job_stats.num_output_files, num_output_files);
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}
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} // namespace
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TEST_F(CompactionJobTest, Simple) {
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auto cfd = versions_->GetColumnFamilySet()->GetDefault();
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auto expected_results = CreateTwoFiles();
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auto files = cfd->current()->storage_info()->LevelFiles(0);
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ASSERT_EQ(2U, files.size());
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CompactionInputFiles compaction_input_files;
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compaction_input_files.level = 0;
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compaction_input_files.files.push_back(files[0]);
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compaction_input_files.files.push_back(files[1]);
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std::unique_ptr<Compaction> compaction(new Compaction(
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cfd->current()->storage_info(), *cfd->GetLatestMutableCFOptions(),
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{compaction_input_files}, 1, 1024 * 1024, 10, 0, kNoCompression, {}));
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compaction->SetInputVersion(cfd->current());
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int yield_callback_called = 0;
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std::function<uint64_t()> yield_callback = [&]() {
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yield_callback_called++;
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return 0;
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};
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LogBuffer log_buffer(InfoLogLevel::INFO_LEVEL, db_options_.info_log.get());
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mutex_.Lock();
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EventLogger event_logger(db_options_.info_log.get());
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std::string db_name = "dbname";
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CompactionJobStats compaction_job_stats;
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CompactionJob compaction_job(0, compaction.get(), db_options_, env_options_,
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versions_.get(), &shutting_down_, &log_buffer,
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nullptr, nullptr, nullptr, {}, table_cache_,
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std::move(yield_callback), &event_logger, false,
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db_name, &compaction_job_stats);
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auto start_micros = Env::Default()->NowMicros();
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VerifyInitializationOfCompactionJobStats(compaction_job_stats);
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compaction_job.Prepare();
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mutex_.Unlock();
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ASSERT_OK(compaction_job.Run());
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mutex_.Lock();
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Status s;
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compaction_job.Install(&s, *cfd->GetLatestMutableCFOptions(), &mutex_);
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ASSERT_OK(s);
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mutex_.Unlock();
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VerifyCompactionJobStats(
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compaction_job_stats,
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files, 1, (Env::Default()->NowMicros() - start_micros) / 2);
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mock_table_factory_->AssertLatestFile(expected_results);
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ASSERT_EQ(yield_callback_called, 20000);
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}
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} // namespace rocksdb
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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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