mirror of
https://github.com/matrix-construct/construct
synced 2024-05-29 00:03:45 +02:00
188 lines
7 KiB
C++
188 lines
7 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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/// Uncomment or -D this #define to enable extensive log messages covering the
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/// entire RocksDB callback surface. This is only useful for developers
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/// specifically working on the backend of the DB and no real use for
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/// developers making frontend queries to it. Massively verbose.
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///
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//#define RB_DEBUG_DB_ENV
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/// This #define is more useful to developers making queries to the database.
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/// It is still so verbose that it goes beyond what is tolerable and generally
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/// useful even in debug-mode builds, thus the manual #define being required.
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///
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//#define RB_DEBUG_DB_SEEK
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/// Uncomment or -D this #define to enable extensive log messages for the
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/// experimental db environment-port implementation. This is only useful
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/// for developers working on the port impl and want to debug all locking
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/// and unlocking etc.
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///
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//#define RB_DEBUG_DB_PORT
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#include <rocksdb/version.h>
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#include <rocksdb/status.h>
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#include <rocksdb/db.h>
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#include <rocksdb/cache.h>
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#include <rocksdb/comparator.h>
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#include <rocksdb/merge_operator.h>
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#include <rocksdb/perf_level.h>
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#include <rocksdb/perf_context.h>
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#include <rocksdb/iostats_context.h>
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#include <rocksdb/listener.h>
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#include <rocksdb/statistics.h>
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#include <rocksdb/convenience.h>
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#include <rocksdb/env.h>
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#include <rocksdb/slice_transform.h>
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#include <rocksdb/utilities/checkpoint.h>
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#include <rocksdb/filter_policy.h>
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#include <rocksdb/table.h>
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#include <rocksdb/sst_file_manager.h>
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#include <rocksdb/sst_dump_tool.h>
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#include <rocksdb/compaction_filter.h>
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#include <rocksdb/wal_filter.h>
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namespace ircd::db
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{
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struct throw_on_error;
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struct error_to_status;
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constexpr const auto BLOCKING { rocksdb::ReadTier::kReadAllTier };
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constexpr const auto NON_BLOCKING { rocksdb::ReadTier::kBlockCacheTier };
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// state
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extern log::log rog;
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extern conf::item<size_t> request_pool_size;
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extern conf::item<size_t> request_pool_stack_size;
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extern ctx::pool::opts request_pool_opts;
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extern ctx::pool request;
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extern ctx::mutex write_mutex;
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// reflections
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string_view reflect(const rocksdb::Status::Code &);
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string_view reflect(const rocksdb::Status::Severity &);
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string_view reflect(const rocksdb::Env::Priority &p);
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string_view reflect(const rocksdb::Env::IOPriority &p);
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string_view reflect(const rocksdb::Env::WriteLifeTimeHint &);
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string_view reflect(const rocksdb::WriteStallCondition &);
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string_view reflect(const rocksdb::BackgroundErrorReason &);
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string_view reflect(const rocksdb::CompactionReason &);
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string_view reflect(const rocksdb::FlushReason &);
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string_view reflect(const rocksdb::RandomAccessFile::AccessPattern &p);
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const std::string &reflect(const rocksdb::Tickers &);
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const std::string &reflect(const rocksdb::Histograms &);
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// string_view <-> slice
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rocksdb::Slice slice(const string_view &);
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string_view slice(const rocksdb::Slice &);
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// Frequently used get options and set options are separate from the string/map system
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rocksdb::WriteOptions &operator+=(rocksdb::WriteOptions &, const sopts &);
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rocksdb::ReadOptions &operator+=(rocksdb::ReadOptions &, const gopts &);
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rocksdb::WriteOptions make_opts(const sopts &);
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rocksdb::ReadOptions make_opts(const gopts &);
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// Database options creator
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bool optstr_find_and_remove(std::string &optstr, const std::string &what);
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rocksdb::DBOptions make_dbopts(std::string optstr, std::string *const &out = nullptr, bool *read_only = nullptr, bool *fsck = nullptr);
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rocksdb::CompressionType find_supported_compression(const std::string &);
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// Read column names from filesystem
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std::vector<std::string> column_names(const std::string &path, const rocksdb::DBOptions &);
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std::vector<std::string> column_names(const std::string &path, const std::string &options);
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// Validation functors
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bool valid(const rocksdb::Iterator &);
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bool operator!(const rocksdb::Iterator &);
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using valid_proffer = std::function<bool (const rocksdb::Iterator &)>;
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bool valid(const rocksdb::Iterator &, const valid_proffer &);
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bool valid_eq(const rocksdb::Iterator &, const string_view &);
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bool valid_lte(const rocksdb::Iterator &, const string_view &);
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bool valid_gt(const rocksdb::Iterator &, const string_view &);
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void valid_or_throw(const rocksdb::Iterator &);
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void valid_eq_or_throw(const rocksdb::Iterator &, const string_view &);
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// [GET] seek suite
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template<class pos> bool seek(database::column &, const pos &, const rocksdb::ReadOptions &, std::unique_ptr<rocksdb::Iterator> &it);
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std::unique_ptr<rocksdb::Iterator> seek(column &, const gopts &);
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std::unique_ptr<rocksdb::Iterator> seek(column &, const string_view &key, const gopts &);
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std::vector<row::value_type> seek(database &, const gopts &);
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std::pair<string_view, string_view> operator*(const rocksdb::Iterator &);
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// [SET] writebatch suite
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std::string debug(const rocksdb::WriteBatch &);
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bool has(const rocksdb::WriteBatch &, const op &);
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void commit(database &, rocksdb::WriteBatch &, const rocksdb::WriteOptions &);
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void commit(database &, rocksdb::WriteBatch &, const sopts &);
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void append(rocksdb::WriteBatch &, column &, const column::delta &delta);
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void append(rocksdb::WriteBatch &, const cell::delta &delta);
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}
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#include "db_port.h"
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#include "db_env.h"
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#include "db_env_state.h"
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#include "db_database.h"
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//
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// util
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//
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struct ircd::db::throw_on_error
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{
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throw_on_error(const rocksdb::Status & = rocksdb::Status::OK());
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};
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struct ircd::db::error_to_status
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:rocksdb::Status
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{
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error_to_status(const std::error_code &);
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error_to_status(const std::system_error &);
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error_to_status(const std::exception &);
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};
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//
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// txn
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//
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struct ircd::db::txn::handler
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:rocksdb::WriteBatch::Handler
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{
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using Status = rocksdb::Status;
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using Slice = rocksdb::Slice;
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const database &d;
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std::function<bool (const delta &)> cb;
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bool _continue {true};
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Status callback(const delta &) noexcept;
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Status callback(const uint32_t &, const op &, const Slice &a, const Slice &b) noexcept;
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bool Continue() noexcept override;
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Status MarkRollback(const Slice &xid) noexcept override;
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Status MarkCommit(const Slice &xid) noexcept override;
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Status MarkEndPrepare(const Slice &xid) noexcept override;
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Status MarkBeginPrepare(bool = false) noexcept override;
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Status MergeCF(const uint32_t cfid, const Slice &, const Slice &) noexcept override;
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Status SingleDeleteCF(const uint32_t cfid, const Slice &) noexcept override;
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Status DeleteRangeCF(const uint32_t cfid, const Slice &, const Slice &) noexcept override;
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Status DeleteCF(const uint32_t cfid, const Slice &) noexcept override;
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Status PutCF(const uint32_t cfid, const Slice &, const Slice &) noexcept override;
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handler(const database &d,
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std::function<bool (const delta &)> cb)
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:d{d}
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,cb{std::move(cb)}
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{}
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};
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