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c605e12479
Summary: The 2 checks added will increase reliabilty and help in debugging Test Plan: make ttl_test;./ttl_test Reviewers: vamsi, dhruba, sheki, haobo Reviewed By: vamsi Differential Revision: https://reviews.facebook.net/D10713
101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#ifndef LEVELDB_UTILITIES_TTL_DB_TTL_H_
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#define LEVELDB_UTILITIES_TTL_DB_TTL_H_
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#include "include/leveldb/db.h"
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#include "db/db_impl.h"
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namespace leveldb {
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class DBWithTTL : public DB {
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public:
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DBWithTTL(const int32_t ttl,
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const Options& options,
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const std::string& dbname,
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Status& st);
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virtual ~DBWithTTL();
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virtual Status Put(const WriteOptions& o,
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const Slice& key,
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const Slice& val);
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virtual Status Get(const ReadOptions& options,
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const Slice& key,
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std::string* value);
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virtual Status Delete(const WriteOptions& wopts, const Slice& key);
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virtual Status Merge(const WriteOptions& options,
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const Slice& key,
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const Slice& value);
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virtual Status Write(const WriteOptions& opts, WriteBatch* updates);
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virtual Iterator* NewIterator(const ReadOptions& opts);
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virtual const Snapshot* GetSnapshot();
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virtual void ReleaseSnapshot(const Snapshot* snapshot);
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virtual bool GetProperty(const Slice& property, std::string* value);
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virtual void GetApproximateSizes(const Range* r, int n, uint64_t* sizes);
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virtual void CompactRange(const Slice* begin, const Slice* end);
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virtual int NumberLevels();
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virtual int MaxMemCompactionLevel();
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virtual int Level0StopWriteTrigger();
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virtual Status Flush(const FlushOptions& fopts);
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virtual Status DisableFileDeletions();
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virtual Status EnableFileDeletions();
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virtual Status GetLiveFiles(std::vector<std::string>& vec, uint64_t* mfs);
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virtual SequenceNumber GetLatestSequenceNumber();
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virtual Status GetUpdatesSince(SequenceNumber seq_number,
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unique_ptr<TransactionLogIterator>* iter);
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// Simulate a db crash, no elegant closing of database.
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void TEST_Destroy_DBWithTtl();
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static bool DeleteByTS(void* args,
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int level,
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const Slice& key,
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const Slice& old_val,
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std::string* new_val,
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bool* value_changed);
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static bool IsStale(const Slice& value, int32_t ttl);
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static Status AppendTS(const Slice& val, std::string& val_with_ts);
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static Status SanityCheckTimestamp(const std::string& str);
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static Status StripTS(std::string* str);
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static Status GetCurrentTime(int32_t& curtime);
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static const int32_t kTSLength = sizeof(int32_t); // size of timestamp
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static const int32_t kMinTimestamp = 1368146402; // 05/09/2013:5:40PM
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private:
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DB* db_;
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int32_t ttl_;
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};
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}
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#endif // LEVELDB_UTILITIES_TTL_DB_TTL_H_
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