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rocksdb/db/deletefile_test.cc

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// 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.
#include "rocksdb/db.h"
#include "db/db_impl.h"
#include "db/filename.h"
#include "db/version_set.h"
#include "db/write_batch_internal.h"
#include "util/testharness.h"
#include "util/testutil.h"
#include "boost/lexical_cast.hpp"
#include "rocksdb/env.h"
#include <vector>
#include <boost/algorithm/string.hpp>
#include <stdlib.h>
#include <map>
namespace rocksdb {
class DeleteFileTest {
public:
std::string dbname_;
Options options_;
DB* db_;
Env* env_;
int numlevels_;
DeleteFileTest() {
db_ = nullptr;
env_ = Env::Default();
options_.write_buffer_size = 1024*1024*1000;
options_.target_file_size_base = 1024*1024*1000;
options_.max_bytes_for_level_base = 1024*1024*1000;
dbname_ = test::TmpDir() + "/deletefile_test";
DestroyDB(dbname_, options_);
numlevels_ = 7;
ASSERT_OK(ReopenDB(true));
}
Status ReopenDB(bool create) {
delete db_;
if (create) {
DestroyDB(dbname_, options_);
}
db_ = nullptr;
options_.create_if_missing = create;
return DB::Open(options_, dbname_, &db_);
}
void CloseDB() {
delete db_;
}
void AddKeys(int numkeys, int startkey = 0) {
WriteOptions options;
options.sync = false;
ReadOptions roptions;
for (int i = startkey; i < (numkeys + startkey) ; i++) {
std::string temp = boost::lexical_cast<std::string>(i);
Slice key(temp);
Slice value(temp);
ASSERT_OK(db_->Put(options, key, value));
}
}
int numKeysInLevels(
std::vector<LiveFileMetaData> &metadata,
std::vector<int> *keysperlevel = nullptr) {
if (keysperlevel != nullptr) {
keysperlevel->resize(numlevels_);
}
int numKeys = 0;
for (size_t i = 0; i < metadata.size(); i++) {
int startkey = atoi(metadata[i].smallestkey.c_str());
int endkey = atoi(metadata[i].largestkey.c_str());
int numkeysinfile = (endkey - startkey + 1);
numKeys += numkeysinfile;
if (keysperlevel != nullptr) {
(*keysperlevel)[(int)metadata[i].level] += numkeysinfile;
}
fprintf(stderr, "level %d name %s smallest %s largest %s\n",
metadata[i].level, metadata[i].name.c_str(),
metadata[i].smallestkey.c_str(),
metadata[i].largestkey.c_str());
}
return numKeys;
}
void CreateTwoLevels() {
AddKeys(50000, 10000);
DBImpl* dbi = reinterpret_cast<DBImpl*>(db_);
ASSERT_OK(dbi->TEST_FlushMemTable());
ASSERT_OK(dbi->TEST_WaitForFlushMemTable());
AddKeys(50000, 10000);
ASSERT_OK(dbi->TEST_FlushMemTable());
ASSERT_OK(dbi->TEST_WaitForFlushMemTable());
}
};
TEST(DeleteFileTest, AddKeysAndQueryLevels) {
CreateTwoLevels();
std::vector<LiveFileMetaData> metadata;
std::vector<int> keysinlevel;
db_->GetLiveFilesMetaData(&metadata);
std::string level1file = "";
int level1keycount = 0;
std::string level2file = "";
int level2keycount = 0;
int level1index = 0;
int level2index = 1;
ASSERT_EQ((int)metadata.size(), 2);
if (metadata[0].level == 2) {
level1index = 1;
level2index = 0;
}
level1file = metadata[level1index].name;
int startkey = atoi(metadata[level1index].smallestkey.c_str());
int endkey = atoi(metadata[level1index].largestkey.c_str());
level1keycount = (endkey - startkey + 1);
level2file = metadata[level2index].name;
startkey = atoi(metadata[level2index].smallestkey.c_str());
endkey = atoi(metadata[level2index].largestkey.c_str());
level2keycount = (endkey - startkey + 1);
// COntrolled setup. Levels 1 and 2 should both have 50K files.
// This is a little fragile as it depends on the current
// compaction heuristics.
ASSERT_EQ(level1keycount, 50000);
ASSERT_EQ(level2keycount, 50000);
Status status = db_->DeleteFile("0.sst");
ASSERT_TRUE(status.IsInvalidArgument());
// intermediate level files cannot be deleted.
status = db_->DeleteFile(level1file);
ASSERT_TRUE(status.IsInvalidArgument());
// Lowest level file deletion should succeed.
ASSERT_OK(db_->DeleteFile(level2file));
CloseDB();
}
TEST(DeleteFileTest, DeleteFileWithIterator) {
CreateTwoLevels();
ReadOptions options;
Iterator* it = db_->NewIterator(options);
std::vector<LiveFileMetaData> metadata;
db_->GetLiveFilesMetaData(&metadata);
std::string level2file = "";
ASSERT_EQ((int)metadata.size(), 2);
if (metadata[0].level == 1) {
level2file = metadata[1].name;
} else {
level2file = metadata[0].name;
}
Status status = db_->DeleteFile(level2file);
fprintf(stdout, "Deletion status %s: %s\n",
level2file.c_str(), status.ToString().c_str());
ASSERT_TRUE(status.ok());
it->SeekToFirst();
int numKeysIterated = 0;
while(it->Valid()) {
numKeysIterated++;
it->Next();
}
ASSERT_EQ(numKeysIterated, 50000);
delete it;
CloseDB();
}
} //namespace rocksdb
int main(int argc, char** argv) {
return rocksdb::test::RunAllTests();
}