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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#ifndef ROCKSDB_LITE
#include <stdlib.h>
#include <map>
#include <string>
#include <vector>
#include "db/db_impl/db_impl.h"
#include "db/db_test_util.h"
#include "db/version_set.h"
#include "db/write_batch_internal.h"
#include "file/filename.h"
#include "port/stack_trace.h"
#include "rocksdb/db.h"
#include "rocksdb/env.h"
#include "rocksdb/transaction_log.h"
#include "test_util/sync_point.h"
#include "test_util/testharness.h"
#include "test_util/testutil.h"
#include "util/string_util.h"
using std::cerr;
using std::cout;
using std::endl;
using std::flush;
namespace ROCKSDB_NAMESPACE {
class ObsoleteFilesTest : public DBTestBase {
public:
ObsoleteFilesTest()
: DBTestBase("/obsolete_files_test"), wal_dir_(dbname_ + "/wal_files") {}
void AddKeys(int numkeys, int startkey) {
WriteOptions options;
options.sync = false;
for (int i = startkey; i < (numkeys + startkey) ; i++) {
std::string temp = ToString(i);
Slice key(temp);
Slice value(temp);
ASSERT_OK(db_->Put(options, key, value));
}
}
void createLevel0Files(int numFiles, int numKeysPerFile) {
int startKey = 0;
for (int i = 0; i < numFiles; i++) {
AddKeys(numKeysPerFile, startKey);
startKey += numKeysPerFile;
ASSERT_OK(dbfull()->TEST_FlushMemTable());
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable());
}
}
void CheckFileTypeCounts(const std::string& dir, int required_log,
int required_sst, int required_manifest) {
std::vector<std::string> filenames;
env_->GetChildren(dir, &filenames);
int log_cnt = 0;
int sst_cnt = 0;
int manifest_cnt = 0;
for (auto file : filenames) {
uint64_t number;
FileType type;
if (ParseFileName(file, &number, &type)) {
log_cnt += (type == kLogFile);
sst_cnt += (type == kTableFile);
manifest_cnt += (type == kDescriptorFile);
}
}
ASSERT_EQ(required_log, log_cnt);
ASSERT_EQ(required_sst, sst_cnt);
ASSERT_EQ(required_manifest, manifest_cnt);
}
void ReopenDB() {
Options options = CurrentOptions();
// Trigger compaction when the number of level 0 files reaches 2.
options.create_if_missing = true;
options.level0_file_num_compaction_trigger = 2;
options.disable_auto_compactions = false;
options.delete_obsolete_files_period_micros = 0; // always do full purge
options.enable_thread_tracking = true;
options.write_buffer_size = 1024 * 1024 * 1000;
options.target_file_size_base = 1024 * 1024 * 1000;
options.max_bytes_for_level_base = 1024 * 1024 * 1000;
options.WAL_ttl_seconds = 300; // Used to test log files
options.WAL_size_limit_MB = 1024; // Used to test log files
options.wal_dir = wal_dir_;
Destroy(options);
Reopen(options);
}
const std::string wal_dir_;
};
TEST_F(ObsoleteFilesTest, RaceForObsoleteFileDeletion) {
ReopenDB();
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->LoadDependency({
{"DBImpl::BackgroundCallCompaction:FoundObsoleteFiles",
"ObsoleteFilesTest::RaceForObsoleteFileDeletion:1"},
{"DBImpl::BackgroundCallCompaction:PurgedObsoleteFiles",
"ObsoleteFilesTest::RaceForObsoleteFileDeletion:2"},
});
SyncPoint::GetInstance()->SetCallBack(
"DBImpl::DeleteObsoleteFileImpl:AfterDeletion", [&](void* arg) {
Status* p_status = reinterpret_cast<Status*>(arg);
ASSERT_OK(*p_status);
});
SyncPoint::GetInstance()->SetCallBack(
"DBImpl::CloseHelper:PendingPurgeFinished", [&](void* arg) {
std::unordered_set<uint64_t>* files_grabbed_for_purge_ptr =
reinterpret_cast<std::unordered_set<uint64_t>*>(arg);
ASSERT_TRUE(files_grabbed_for_purge_ptr->empty());
});
SyncPoint::GetInstance()->EnableProcessing();
createLevel0Files(2, 50000);
CheckFileTypeCounts(wal_dir_, 1, 0, 0);
port::Thread user_thread([this]() {
JobContext jobCxt(0);
TEST_SYNC_POINT("ObsoleteFilesTest::RaceForObsoleteFileDeletion:1");
dbfull()->TEST_LockMutex();
dbfull()->FindObsoleteFiles(&jobCxt, true /* force=true */,
false /* no_full_scan=false */);
dbfull()->TEST_UnlockMutex();
TEST_SYNC_POINT("ObsoleteFilesTest::RaceForObsoleteFileDeletion:2");
dbfull()->PurgeObsoleteFiles(jobCxt);
jobCxt.Clean();
});
user_thread.join();
}
TEST_F(ObsoleteFilesTest, DeleteObsoleteOptionsFile) {
ReopenDB();
SyncPoint::GetInstance()->DisableProcessing();
std::vector<uint64_t> optsfiles_nums;
std::vector<bool> optsfiles_keep;
SyncPoint::GetInstance()->SetCallBack(
"DBImpl::PurgeObsoleteFiles:CheckOptionsFiles:1", [&](void* arg) {
optsfiles_nums.push_back(*reinterpret_cast<uint64_t*>(arg));
});
SyncPoint::GetInstance()->SetCallBack(
"DBImpl::PurgeObsoleteFiles:CheckOptionsFiles:2", [&](void* arg) {
optsfiles_keep.push_back(*reinterpret_cast<bool*>(arg));
});
SyncPoint::GetInstance()->EnableProcessing();
createLevel0Files(2, 50000);
CheckFileTypeCounts(wal_dir_, 1, 0, 0);
ASSERT_OK(dbfull()->DisableFileDeletions());
for (int i = 0; i != 4; ++i) {
if (i % 2) {
ASSERT_OK(dbfull()->SetOptions(dbfull()->DefaultColumnFamily(),
{{"paranoid_file_checks", "false"}}));
} else {
ASSERT_OK(dbfull()->SetOptions(dbfull()->DefaultColumnFamily(),
{{"paranoid_file_checks", "true"}}));
}
}
ASSERT_OK(dbfull()->EnableFileDeletions(true /* force */));
ASSERT_EQ(optsfiles_nums.size(), optsfiles_keep.size());
Close();
std::vector<std::string> files;
int opts_file_count = 0;
ASSERT_OK(env_->GetChildren(dbname_, &files));
for (const auto& file : files) {
uint64_t file_num;
Slice dummy_info_log_name_prefix;
FileType type;
WalFileType log_type;
if (ParseFileName(file, &file_num, dummy_info_log_name_prefix, &type,
&log_type) &&
type == kOptionsFile) {
opts_file_count++;
}
}
ASSERT_EQ(2, opts_file_count);
}
} // namespace ROCKSDB_NAMESPACE
#ifdef ROCKSDB_UNITTESTS_WITH_CUSTOM_OBJECTS_FROM_STATIC_LIBS
extern "C" {
void RegisterCustomObjects(int argc, char** argv);
}
#else
void RegisterCustomObjects(int /*argc*/, char** /*argv*/) {}
#endif // !ROCKSDB_UNITTESTS_WITH_CUSTOM_OBJECTS_FROM_STATIC_LIBS
int main(int argc, char** argv) {
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
RegisterCustomObjects(argc, argv);
return RUN_ALL_TESTS();
}
#else
#include <stdio.h>
int main(int /*argc*/, char** /*argv*/) {
fprintf(stderr,
"SKIPPED as DBImpl::DeleteFile is not supported in ROCKSDB_LITE\n");
return 0;
}
#endif // !ROCKSDB_LITE
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