// 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).

#pragma once

#include <string>

#include <vector>

#include "rocksdb/options.h"

namespace ROCKSDB_NAMESPACE {

class SystemClock;

struct ImmutableDBOptions {

  static const char* kName() { return "ImmutableDBOptions"; }

  ImmutableDBOptions();

  explicit ImmutableDBOptions(const DBOptions& options);

  void Dump(Logger* log) const;

  bool create_if_missing;

  bool create_missing_column_families;

  bool error_if_exists;

  bool paranoid_checks;

  bool open_files_async;

  bool flush_verify_memtable_count;

  bool compaction_verify_record_count;

  bool track_and_verify_wals_in_manifest;

  bool track_and_verify_wals;

  bool verify_sst_unique_id_in_manifest;

  Env* env;

  std::shared_ptr<RateLimiter> rate_limiter;

  std::shared_ptr<SstFileManager> sst_file_manager;

  std::shared_ptr<Logger> info_log;

  InfoLogLevel info_log_level;

  int max_file_opening_threads;

  std::shared_ptr<Statistics> statistics;

  bool use_fsync;

  std::vector<DbPath> db_paths;

  std::string db_log_dir;

  // The wal_dir option from the file.  To determine the

  // directory in use, the GetWalDir or IsWalDirSameAsDBPath

  // methods should be used instead of accessing this variable directly.

  std::string wal_dir;

  size_t max_log_file_size;

  size_t log_file_time_to_roll;

  size_t keep_log_file_num;

  size_t recycle_log_file_num;

  // Immutable copy of DBOptions::async_wal_precreate.

  bool async_wal_precreate;

  int table_cache_numshardbits;

  uint64_t WAL_ttl_seconds;

  uint64_t WAL_size_limit_MB;

  uint64_t max_write_batch_group_size_bytes;

  bool allow_mmap_reads;

  bool allow_mmap_writes;

  bool use_direct_reads;

  bool use_direct_io_for_flush_and_compaction;

  bool allow_fallocate;

  bool is_fd_close_on_exec;

  bool advise_random_on_open;

  size_t db_write_buffer_size;

  std::shared_ptr<WriteBufferManager> write_buffer_manager;

  bool use_adaptive_mutex;

  std::vector<std::shared_ptr<EventListener>> listeners;

  bool enable_thread_tracking;

  bool enable_pipelined_write;

  bool unordered_write;

  bool allow_concurrent_memtable_write;

  bool enable_write_thread_adaptive_yield;

  uint64_t write_thread_max_yield_usec;

  uint64_t write_thread_slow_yield_usec;

  bool skip_stats_update_on_db_open;

  WALRecoveryMode wal_recovery_mode;

  bool allow_2pc;

  std::shared_ptr<Cache> row_cache;

  WalFilter* wal_filter;

  bool dump_malloc_stats;

  bool avoid_flush_during_recovery;

  bool enforce_write_buffer_manager_during_recovery;

  bool allow_ingest_behind;

  bool two_write_queues;

  bool manual_wal_flush;

  CompressionType wal_compression;

  bool background_close_inactive_wals;

  bool atomic_flush;

  bool avoid_unnecessary_blocking_io;

  bool prefix_seek_opt_in_only;

  bool persist_stats_to_disk;

  bool write_dbid_to_manifest;

  bool reuse_manifest_on_open;

  bool write_identity_file;

  size_t log_readahead_size;

  std::shared_ptr<FileChecksumGenFactory> file_checksum_gen_factory;

  bool best_efforts_recovery;

  int max_bgerror_resume_count;

  uint64_t bgerror_resume_retry_interval;

  bool allow_data_in_errors;

  std::string db_host_id;

  FileTypeSet checksum_handoff_file_types;

  CacheTier lowest_used_cache_tier;

  std::shared_ptr<CompactionService> compaction_service;

  bool enforce_single_del_contracts;

  uint64_t follower_refresh_catchup_period_ms;

  uint64_t follower_catchup_retry_count;

  uint64_t follower_catchup_retry_wait_ms;

  Temperature metadata_write_temperature;

  Temperature wal_write_temperature;

  CompactionStyleSet calculate_sst_write_lifetime_hint_set;

  // Beginning convenience/helper objects that are not part of the base

  // DBOptions

  std::shared_ptr<FileSystem> fs;

  SystemClock* clock;

  Statistics* stats;

  Logger* logger;

  // End of convenience/helper objects.

  bool IsWalDirSameAsDBPath() const;

  bool IsWalDirSameAsDBPath(const std::string& path) const;

  const std::string& GetWalDir() const;

  const std::string& GetWalDir(const std::string& path) const;

};

struct MutableDBOptions {

  static const char* kName() { return "MutableDBOptions"; }

  MutableDBOptions();

  explicit MutableDBOptions(const DBOptions& options);

  void Dump(Logger* log) const;

  int max_background_jobs;

  int max_background_compactions;

  uint32_t max_subcompactions;

  bool avoid_flush_during_shutdown;

  size_t writable_file_max_buffer_size;

  uint64_t delayed_write_rate;

  uint64_t max_total_wal_size;

  uint64_t delete_obsolete_files_period_micros;

  unsigned int stats_dump_period_sec;

  unsigned int stats_persist_period_sec;

  size_t stats_history_buffer_size;

  int max_open_files;

  uint64_t bytes_per_sync;

  uint64_t wal_bytes_per_sync;

  bool strict_bytes_per_sync;

  size_t compaction_readahead_size;

  int max_background_flushes;

  uint64_t max_manifest_file_size;

  int max_manifest_space_amp_pct;

  size_t manifest_preallocation_size;

  bool verify_manifest_content_on_close;

  bool optimize_manifest_for_recovery;

  bool fast_sst_open;

  std::string daily_offpeak_time_utc;

  uint64_t max_compaction_trigger_wakeup_seconds;

};

Status GetStringFromMutableDBOptions(const ConfigOptions& config_options,

                                     const MutableDBOptions& mutable_opts,

                                     std::string* opt_string);

Status GetMutableDBOptionsFromStrings(

    const MutableDBOptions& base_options,

    const std::unordered_map<std::string, std::string>& options_map,

    MutableDBOptions* new_options);

bool MutableDBOptionsAreEqual(const MutableDBOptions& this_options,

                              const MutableDBOptions& that_options);

}  // namespace ROCKSDB_NAMESPACE