fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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91 lines
2.9 KiB
91 lines
2.9 KiB
// Copyright (c) 2011-present, 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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// This source code is also licensed under the GPLv2 license found in the
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// COPYING file in the root directory of this source tree.
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#pragma once
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#ifndef ROCKSDB_LITE
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#include <map>
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#include <string>
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#include <vector>
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#include "monitoring/instrumented_mutex.h"
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#include "options/cf_options.h"
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#include "rocksdb/db.h"
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#include "rocksdb/utilities/date_tiered_db.h"
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namespace rocksdb {
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// Implementation of DateTieredDB.
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class DateTieredDBImpl : public DateTieredDB {
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public:
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DateTieredDBImpl(DB* db, Options options,
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const std::vector<ColumnFamilyDescriptor>& descriptors,
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const std::vector<ColumnFamilyHandle*>& handles, int64_t ttl,
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int64_t column_family_interval);
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virtual ~DateTieredDBImpl();
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Status Put(const WriteOptions& options, const Slice& key,
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const Slice& val) override;
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Status Get(const ReadOptions& options, const Slice& key,
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std::string* value) override;
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Status Delete(const WriteOptions& options, const Slice& key) override;
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bool KeyMayExist(const ReadOptions& options, const Slice& key,
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std::string* value, bool* value_found = nullptr) override;
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Status Merge(const WriteOptions& options, const Slice& key,
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const Slice& value) override;
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Iterator* NewIterator(const ReadOptions& opts) override;
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Status DropObsoleteColumnFamilies() override;
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// Extract timestamp from key.
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static Status GetTimestamp(const Slice& key, int64_t* result);
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private:
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// Base database object
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DB* db_;
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const ColumnFamilyOptions cf_options_;
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const ImmutableCFOptions ioptions_;
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// Storing all column family handles for time series data.
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std::vector<ColumnFamilyHandle*> handles_;
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// Manages a mapping from a column family's maximum timestamp to its handle.
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std::map<int64_t, ColumnFamilyHandle*> handle_map_;
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// A time-to-live value to indicate when the data should be removed.
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int64_t ttl_;
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// An variable to indicate the time range of a column family.
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int64_t column_family_interval_;
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// Indicate largest maximum timestamp of a column family.
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int64_t latest_timebound_;
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// Mutex to protect handle_map_ operations.
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InstrumentedMutex mutex_;
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// Internal method to execute Put and Merge in batch.
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Status Write(const WriteOptions& opts, WriteBatch* updates);
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Status CreateColumnFamily(ColumnFamilyHandle** column_family);
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Status FindColumnFamily(int64_t keytime, ColumnFamilyHandle** column_family,
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bool create_if_missing);
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static bool IsStale(int64_t keytime, int64_t ttl, Env* env);
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};
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} // namespace rocksdb
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#endif // ROCKSDB_LITE
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