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rocksdb/options/options_helper.cc
Peter Dillinger b34cef57b7 Support pro-actively erasing obsolete block cache entries (#12694) 
Summary:
Currently, when files become obsolete, the block cache entries associated with them just age out naturally. With pure LRU, this is not too bad, as once you "use" enough cache entries to (re-)fill the cache, you are guranteed to have purged the obsolete entries. However, HyperClockCache is a counting clock cache with a somewhat longer memory, so could be more negatively impacted by previously-hot cache entries becoming obsolete, and taking longer to age out than newer single-hit entries.

Part of the reason we still have this natural aging-out is that there's almost no connection between block cache entries and the file they are associated with. Everything is hashed into the same pool(s) of entries with nothing like a secondary index based on file. Keeping track of such an index could be expensive.

This change adds a new, mutable CF option `uncache_aggressiveness` for erasing obsolete block cache entries. The process can be speculative, lossy, or unproductive because not all potential block cache entries associated with files will be resident in memory, and attempting to remove them all could be wasted CPU time. Rather than a simple on/off switch, `uncache_aggressiveness` basically tells RocksDB how much CPU you're willing to burn trying to purge obsolete block cache entries. When such efforts are not sufficiently productive for a file, we stop and move on.

The option is in ColumnFamilyOptions so that it is dynamically changeable for already-open files, and customizeable by CF.

Note that this block cache removal happens as part of the process of purging obsolete files, which is often in a background thread (depending on `background_purge_on_iterator_cleanup` and `avoid_unnecessary_blocking_io` options) rather than along CPU critical paths.

Notable auxiliary code details:
* Possibly fixing some issues with trivial moves with `only_delete_metadata`: unnecessary TableCache::Evict in that case and missing from the ObsoleteFileInfo move operator. (Not able to reproduce an current failure.)
* Remove suspicious TableCache::Erase() from VersionSet::AddObsoleteBlobFile() (TODO follow-up item)

Marked EXPERIMENTAL until more thorough validation is complete.

Direct stats of this functionality are omitted because they could be misleading. Block cache hit rate is a better indicator of benefit, and CPU profiling a better indicator of cost.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12694

Test Plan:
* Unit tests added, including refactoring an existing test to make better use of parameterized tests.
* Added to crash test.
* Performance, sample command:
```
for I in `seq 1 10`; do for UA in 300; do for CT in lru_cache fixed_hyper_clock_cache auto_hyper_clock_cache; do rm -rf /dev/shm/test3; TEST_TMPDIR=/dev/shm/test3 /usr/bin/time ./db_bench -benchmarks=readwhilewriting -num=13000000 -read_random_exp_range=6 -write_buffer_size=10000000 -bloom_bits=10 -cache_type=$CT -cache_size=390000000 -cache_index_and_filter_blocks=1 -disable_wal=1 -duration=60 -statistics -uncache_aggressiveness=$UA 2>&1 | grep -E 'micros/op|rocksdb.block.cache.data.(hit|miss)|rocksdb.number.keys.(read|written)|maxresident' | awk '/rocksdb.block.cache.data.miss/ { miss = $4 } /rocksdb.block.cache.data.hit/ { hit = $4 } { print } END { print "hit rate = " ((hit * 1.0) / (miss + hit)) }' | tee -a results-$CT-$UA; done; done; done
```

Averaging 10 runs each case, block cache data block hit rates

```
lru_cache
UA=0   -> hit rate = 0.327, ops/s = 87668, user CPU sec = 139.0
UA=300 -> hit rate = 0.336, ops/s = 87960, user CPU sec = 139.0

fixed_hyper_clock_cache
UA=0   -> hit rate = 0.336, ops/s = 100069, user CPU sec = 139.9
UA=300 -> hit rate = 0.343, ops/s = 100104, user CPU sec = 140.2

auto_hyper_clock_cache
UA=0   -> hit rate = 0.336, ops/s = 97580, user CPU sec = 140.5
UA=300 -> hit rate = 0.345, ops/s = 97972, user CPU sec = 139.8
```

Conclusion: up to roughly 1 percentage point of improved block cache hit rate, likely leading to overall improved efficiency (because the foreground CPU cost of cache misses likely outweighs the background CPU cost of erasure, let alone I/O savings).

Reviewed By: ajkr

Differential Revision: D57932442

Pulled By: pdillinger

fbshipit-source-id: 84a243ca5f965f731f346a4853009780a904af6c
2024-06-07 08:57:11 -07:00

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// 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).
#include "options/options_helper.h"
#include <atomic>
#include <cassert>
#include <cctype>
#include <cstdlib>
#include <set>
#include <unordered_set>
#include <vector>
#include "options/cf_options.h"
#include "options/db_options.h"
#include "rocksdb/cache.h"
#include "rocksdb/compaction_filter.h"
#include "rocksdb/convenience.h"
#include "rocksdb/filter_policy.h"
#include "rocksdb/flush_block_policy.h"
#include "rocksdb/memtablerep.h"
#include "rocksdb/merge_operator.h"
#include "rocksdb/options.h"
#include "rocksdb/rate_limiter.h"
#include "rocksdb/slice_transform.h"
#include "rocksdb/table.h"
#include "rocksdb/utilities/object_registry.h"
#include "rocksdb/utilities/options_type.h"
#include "util/string_util.h"
namespace ROCKSDB_NAMESPACE {
ConfigOptions::ConfigOptions()
: registry(ObjectRegistry::NewInstance())
{
env = Env::Default();
}
ConfigOptions::ConfigOptions(const DBOptions& db_opts) : env(db_opts.env) {
registry = ObjectRegistry::NewInstance();
}
Status ValidateOptions(const DBOptions& db_opts,
const ColumnFamilyOptions& cf_opts) {
Status s;
auto db_cfg = DBOptionsAsConfigurable(db_opts);
auto cf_cfg = CFOptionsAsConfigurable(cf_opts);
s = db_cfg->ValidateOptions(db_opts, cf_opts);
if (s.ok()) {
s = cf_cfg->ValidateOptions(db_opts, cf_opts);
}
return s;
}
DBOptions BuildDBOptions(const ImmutableDBOptions& immutable_db_options,
const MutableDBOptions& mutable_db_options) {
DBOptions options;
options.create_if_missing = immutable_db_options.create_if_missing;
options.create_missing_column_families =
immutable_db_options.create_missing_column_families;
options.error_if_exists = immutable_db_options.error_if_exists;
options.paranoid_checks = immutable_db_options.paranoid_checks;
options.flush_verify_memtable_count =
immutable_db_options.flush_verify_memtable_count;
options.compaction_verify_record_count =
immutable_db_options.compaction_verify_record_count;
options.track_and_verify_wals_in_manifest =
immutable_db_options.track_and_verify_wals_in_manifest;
options.verify_sst_unique_id_in_manifest =
immutable_db_options.verify_sst_unique_id_in_manifest;
options.env = immutable_db_options.env;
options.rate_limiter = immutable_db_options.rate_limiter;
options.sst_file_manager = immutable_db_options.sst_file_manager;
options.info_log = immutable_db_options.info_log;
options.info_log_level = immutable_db_options.info_log_level;
options.max_open_files = mutable_db_options.max_open_files;
options.max_file_opening_threads =
immutable_db_options.max_file_opening_threads;
options.max_total_wal_size = mutable_db_options.max_total_wal_size;
options.statistics = immutable_db_options.statistics;
options.use_fsync = immutable_db_options.use_fsync;
options.db_paths = immutable_db_options.db_paths;
options.db_log_dir = immutable_db_options.db_log_dir;
options.wal_dir = immutable_db_options.wal_dir;
options.delete_obsolete_files_period_micros =
mutable_db_options.delete_obsolete_files_period_micros;
options.max_background_jobs = mutable_db_options.max_background_jobs;
options.max_background_compactions =
mutable_db_options.max_background_compactions;
options.bytes_per_sync = mutable_db_options.bytes_per_sync;
options.wal_bytes_per_sync = mutable_db_options.wal_bytes_per_sync;
options.strict_bytes_per_sync = mutable_db_options.strict_bytes_per_sync;
options.max_subcompactions = mutable_db_options.max_subcompactions;
options.max_background_flushes = mutable_db_options.max_background_flushes;
options.max_log_file_size = immutable_db_options.max_log_file_size;
options.log_file_time_to_roll = immutable_db_options.log_file_time_to_roll;
options.keep_log_file_num = immutable_db_options.keep_log_file_num;
options.recycle_log_file_num = immutable_db_options.recycle_log_file_num;
options.max_manifest_file_size = immutable_db_options.max_manifest_file_size;
options.table_cache_numshardbits =
immutable_db_options.table_cache_numshardbits;
options.WAL_ttl_seconds = immutable_db_options.WAL_ttl_seconds;
options.WAL_size_limit_MB = immutable_db_options.WAL_size_limit_MB;
options.manifest_preallocation_size =
immutable_db_options.manifest_preallocation_size;
options.allow_mmap_reads = immutable_db_options.allow_mmap_reads;
options.allow_mmap_writes = immutable_db_options.allow_mmap_writes;
options.use_direct_reads = immutable_db_options.use_direct_reads;
options.use_direct_io_for_flush_and_compaction =
immutable_db_options.use_direct_io_for_flush_and_compaction;
options.allow_fallocate = immutable_db_options.allow_fallocate;
options.is_fd_close_on_exec = immutable_db_options.is_fd_close_on_exec;
options.stats_dump_period_sec = mutable_db_options.stats_dump_period_sec;
options.stats_persist_period_sec =
mutable_db_options.stats_persist_period_sec;
options.persist_stats_to_disk = immutable_db_options.persist_stats_to_disk;
options.stats_history_buffer_size =
mutable_db_options.stats_history_buffer_size;
options.advise_random_on_open = immutable_db_options.advise_random_on_open;
options.db_write_buffer_size = immutable_db_options.db_write_buffer_size;
options.write_buffer_manager = immutable_db_options.write_buffer_manager;
options.compaction_readahead_size =
mutable_db_options.compaction_readahead_size;
options.random_access_max_buffer_size =
immutable_db_options.random_access_max_buffer_size;
options.writable_file_max_buffer_size =
mutable_db_options.writable_file_max_buffer_size;
options.use_adaptive_mutex = immutable_db_options.use_adaptive_mutex;
options.listeners = immutable_db_options.listeners;
options.enable_thread_tracking = immutable_db_options.enable_thread_tracking;
options.delayed_write_rate = mutable_db_options.delayed_write_rate;
options.enable_pipelined_write = immutable_db_options.enable_pipelined_write;
options.unordered_write = immutable_db_options.unordered_write;
options.allow_concurrent_memtable_write =
immutable_db_options.allow_concurrent_memtable_write;
options.enable_write_thread_adaptive_yield =
immutable_db_options.enable_write_thread_adaptive_yield;
options.max_write_batch_group_size_bytes =
immutable_db_options.max_write_batch_group_size_bytes;
options.write_thread_max_yield_usec =
immutable_db_options.write_thread_max_yield_usec;
options.write_thread_slow_yield_usec =
immutable_db_options.write_thread_slow_yield_usec;
options.skip_stats_update_on_db_open =
immutable_db_options.skip_stats_update_on_db_open;
options.skip_checking_sst_file_sizes_on_db_open =
immutable_db_options.skip_checking_sst_file_sizes_on_db_open;
options.wal_recovery_mode = immutable_db_options.wal_recovery_mode;
options.allow_2pc = immutable_db_options.allow_2pc;
options.row_cache = immutable_db_options.row_cache;
options.wal_filter = immutable_db_options.wal_filter;
options.fail_if_options_file_error =
immutable_db_options.fail_if_options_file_error;
options.dump_malloc_stats = immutable_db_options.dump_malloc_stats;
options.avoid_flush_during_recovery =
immutable_db_options.avoid_flush_during_recovery;
options.avoid_flush_during_shutdown =
mutable_db_options.avoid_flush_during_shutdown;
options.allow_ingest_behind = immutable_db_options.allow_ingest_behind;
options.two_write_queues = immutable_db_options.two_write_queues;
options.manual_wal_flush = immutable_db_options.manual_wal_flush;
options.wal_compression = immutable_db_options.wal_compression;
options.atomic_flush = immutable_db_options.atomic_flush;
options.avoid_unnecessary_blocking_io =
immutable_db_options.avoid_unnecessary_blocking_io;
options.log_readahead_size = immutable_db_options.log_readahead_size;
options.file_checksum_gen_factory =
immutable_db_options.file_checksum_gen_factory;
options.best_efforts_recovery = immutable_db_options.best_efforts_recovery;
options.max_bgerror_resume_count =
immutable_db_options.max_bgerror_resume_count;
options.bgerror_resume_retry_interval =
immutable_db_options.bgerror_resume_retry_interval;
options.db_host_id = immutable_db_options.db_host_id;
options.allow_data_in_errors = immutable_db_options.allow_data_in_errors;
options.checksum_handoff_file_types =
immutable_db_options.checksum_handoff_file_types;
options.lowest_used_cache_tier = immutable_db_options.lowest_used_cache_tier;
options.enforce_single_del_contracts =
immutable_db_options.enforce_single_del_contracts;
options.daily_offpeak_time_utc = mutable_db_options.daily_offpeak_time_utc;
return options;
}
ColumnFamilyOptions BuildColumnFamilyOptions(
const ColumnFamilyOptions& options,
const MutableCFOptions& mutable_cf_options) {
ColumnFamilyOptions cf_opts(options);
UpdateColumnFamilyOptions(mutable_cf_options, &cf_opts);
// TODO(yhchiang): find some way to handle the following derived options
// * max_file_size
return cf_opts;
}
void UpdateColumnFamilyOptions(const MutableCFOptions& moptions,
ColumnFamilyOptions* cf_opts) {
// Memtable related options
cf_opts->write_buffer_size = moptions.write_buffer_size;
cf_opts->max_write_buffer_number = moptions.max_write_buffer_number;
cf_opts->arena_block_size = moptions.arena_block_size;
cf_opts->memtable_prefix_bloom_size_ratio =
moptions.memtable_prefix_bloom_size_ratio;
cf_opts->memtable_whole_key_filtering = moptions.memtable_whole_key_filtering;
cf_opts->memtable_huge_page_size = moptions.memtable_huge_page_size;
cf_opts->max_successive_merges = moptions.max_successive_merges;
cf_opts->strict_max_successive_merges = moptions.strict_max_successive_merges;
cf_opts->inplace_update_num_locks = moptions.inplace_update_num_locks;
cf_opts->prefix_extractor = moptions.prefix_extractor;
cf_opts->experimental_mempurge_threshold =
moptions.experimental_mempurge_threshold;
cf_opts->memtable_protection_bytes_per_key =
moptions.memtable_protection_bytes_per_key;
cf_opts->block_protection_bytes_per_key =
moptions.block_protection_bytes_per_key;
cf_opts->bottommost_file_compaction_delay =
moptions.bottommost_file_compaction_delay;
// Compaction related options
cf_opts->disable_auto_compactions = moptions.disable_auto_compactions;
cf_opts->soft_pending_compaction_bytes_limit =
moptions.soft_pending_compaction_bytes_limit;
cf_opts->hard_pending_compaction_bytes_limit =
moptions.hard_pending_compaction_bytes_limit;
cf_opts->level0_file_num_compaction_trigger =
moptions.level0_file_num_compaction_trigger;
cf_opts->level0_slowdown_writes_trigger =
moptions.level0_slowdown_writes_trigger;
cf_opts->level0_stop_writes_trigger = moptions.level0_stop_writes_trigger;
cf_opts->max_compaction_bytes = moptions.max_compaction_bytes;
cf_opts->target_file_size_base = moptions.target_file_size_base;
cf_opts->target_file_size_multiplier = moptions.target_file_size_multiplier;
cf_opts->max_bytes_for_level_base = moptions.max_bytes_for_level_base;
cf_opts->max_bytes_for_level_multiplier =
moptions.max_bytes_for_level_multiplier;
cf_opts->ttl = moptions.ttl;
cf_opts->periodic_compaction_seconds = moptions.periodic_compaction_seconds;
cf_opts->max_bytes_for_level_multiplier_additional.clear();
for (auto value : moptions.max_bytes_for_level_multiplier_additional) {
cf_opts->max_bytes_for_level_multiplier_additional.emplace_back(value);
}
cf_opts->compaction_options_fifo = moptions.compaction_options_fifo;
cf_opts->compaction_options_universal = moptions.compaction_options_universal;
// Blob file related options
cf_opts->enable_blob_files = moptions.enable_blob_files;
cf_opts->min_blob_size = moptions.min_blob_size;
cf_opts->blob_file_size = moptions.blob_file_size;
cf_opts->blob_compression_type = moptions.blob_compression_type;
cf_opts->enable_blob_garbage_collection =
moptions.enable_blob_garbage_collection;
cf_opts->blob_garbage_collection_age_cutoff =
moptions.blob_garbage_collection_age_cutoff;
cf_opts->blob_garbage_collection_force_threshold =
moptions.blob_garbage_collection_force_threshold;
cf_opts->blob_compaction_readahead_size =
moptions.blob_compaction_readahead_size;
cf_opts->blob_file_starting_level = moptions.blob_file_starting_level;
cf_opts->prepopulate_blob_cache = moptions.prepopulate_blob_cache;
// Misc options
cf_opts->max_sequential_skip_in_iterations =
moptions.max_sequential_skip_in_iterations;
cf_opts->paranoid_file_checks = moptions.paranoid_file_checks;
cf_opts->report_bg_io_stats = moptions.report_bg_io_stats;
cf_opts->compression = moptions.compression;
cf_opts->compression_opts = moptions.compression_opts;
cf_opts->bottommost_compression = moptions.bottommost_compression;
cf_opts->bottommost_compression_opts = moptions.bottommost_compression_opts;
cf_opts->sample_for_compression = moptions.sample_for_compression;
cf_opts->compression_per_level = moptions.compression_per_level;
cf_opts->last_level_temperature = moptions.last_level_temperature;
cf_opts->default_write_temperature = moptions.default_write_temperature;
cf_opts->memtable_max_range_deletions = moptions.memtable_max_range_deletions;
cf_opts->uncache_aggressiveness = moptions.uncache_aggressiveness;
}
void UpdateColumnFamilyOptions(const ImmutableCFOptions& ioptions,
ColumnFamilyOptions* cf_opts) {
cf_opts->compaction_style = ioptions.compaction_style;
cf_opts->compaction_pri = ioptions.compaction_pri;
cf_opts->comparator = ioptions.user_comparator;
cf_opts->merge_operator = ioptions.merge_operator;
cf_opts->compaction_filter = ioptions.compaction_filter;
cf_opts->compaction_filter_factory = ioptions.compaction_filter_factory;
cf_opts->min_write_buffer_number_to_merge =
ioptions.min_write_buffer_number_to_merge;
cf_opts->max_write_buffer_number_to_maintain =
ioptions.max_write_buffer_number_to_maintain;
cf_opts->max_write_buffer_size_to_maintain =
ioptions.max_write_buffer_size_to_maintain;
cf_opts->inplace_update_support = ioptions.inplace_update_support;
cf_opts->inplace_callback = ioptions.inplace_callback;
cf_opts->memtable_factory = ioptions.memtable_factory;
cf_opts->table_factory = ioptions.table_factory;
cf_opts->table_properties_collector_factories =
ioptions.table_properties_collector_factories;
cf_opts->bloom_locality = ioptions.bloom_locality;
cf_opts->level_compaction_dynamic_level_bytes =
ioptions.level_compaction_dynamic_level_bytes;
cf_opts->num_levels = ioptions.num_levels;
cf_opts->optimize_filters_for_hits = ioptions.optimize_filters_for_hits;
cf_opts->force_consistency_checks = ioptions.force_consistency_checks;
cf_opts->memtable_insert_with_hint_prefix_extractor =
ioptions.memtable_insert_with_hint_prefix_extractor;
cf_opts->cf_paths = ioptions.cf_paths;
cf_opts->compaction_thread_limiter = ioptions.compaction_thread_limiter;
cf_opts->sst_partitioner_factory = ioptions.sst_partitioner_factory;
cf_opts->blob_cache = ioptions.blob_cache;
cf_opts->preclude_last_level_data_seconds =
ioptions.preclude_last_level_data_seconds;
cf_opts->preserve_internal_time_seconds =
ioptions.preserve_internal_time_seconds;
cf_opts->persist_user_defined_timestamps =
ioptions.persist_user_defined_timestamps;
cf_opts->default_temperature = ioptions.default_temperature;
// TODO(yhchiang): find some way to handle the following derived options
// * max_file_size
}
std::map<CompactionStyle, std::string>
OptionsHelper::compaction_style_to_string = {
{kCompactionStyleLevel, "kCompactionStyleLevel"},
{kCompactionStyleUniversal, "kCompactionStyleUniversal"},
{kCompactionStyleFIFO, "kCompactionStyleFIFO"},
{kCompactionStyleNone, "kCompactionStyleNone"}};
std::map<CompactionPri, std::string> OptionsHelper::compaction_pri_to_string = {
{kByCompensatedSize, "kByCompensatedSize"},
{kOldestLargestSeqFirst, "kOldestLargestSeqFirst"},
{kOldestSmallestSeqFirst, "kOldestSmallestSeqFirst"},
{kMinOverlappingRatio, "kMinOverlappingRatio"},
{kRoundRobin, "kRoundRobin"}};
std::map<CompactionStopStyle, std::string>
OptionsHelper::compaction_stop_style_to_string = {
{kCompactionStopStyleSimilarSize, "kCompactionStopStyleSimilarSize"},
{kCompactionStopStyleTotalSize, "kCompactionStopStyleTotalSize"}};
std::map<Temperature, std::string> OptionsHelper::temperature_to_string = {
{Temperature::kUnknown, "kUnknown"},
{Temperature::kHot, "kHot"},
{Temperature::kWarm, "kWarm"},
{Temperature::kCold, "kCold"}};
std::unordered_map<std::string, ChecksumType>
OptionsHelper::checksum_type_string_map = {{"kNoChecksum", kNoChecksum},
{"kCRC32c", kCRC32c},
{"kxxHash", kxxHash},
{"kxxHash64", kxxHash64},
{"kXXH3", kXXH3}};
std::unordered_map<std::string, CompressionType>
OptionsHelper::compression_type_string_map = {
{"kNoCompression", kNoCompression},
{"kSnappyCompression", kSnappyCompression},
{"kZlibCompression", kZlibCompression},
{"kBZip2Compression", kBZip2Compression},
{"kLZ4Compression", kLZ4Compression},
{"kLZ4HCCompression", kLZ4HCCompression},
{"kXpressCompression", kXpressCompression},
{"kZSTD", kZSTD},
{"kZSTDNotFinalCompression", kZSTDNotFinalCompression},
{"kDisableCompressionOption", kDisableCompressionOption}};
std::vector<CompressionType> GetSupportedCompressions() {
// std::set internally to deduplicate potential name aliases
std::set<CompressionType> supported_compressions;
for (const auto& comp_to_name : OptionsHelper::compression_type_string_map) {
CompressionType t = comp_to_name.second;
if (t != kDisableCompressionOption && CompressionTypeSupported(t)) {
supported_compressions.insert(t);
}
}
return std::vector<CompressionType>(supported_compressions.begin(),
supported_compressions.end());
}
std::vector<CompressionType> GetSupportedDictCompressions() {
std::set<CompressionType> dict_compression_types;
for (const auto& comp_to_name : OptionsHelper::compression_type_string_map) {
CompressionType t = comp_to_name.second;
if (t != kDisableCompressionOption && DictCompressionTypeSupported(t)) {
dict_compression_types.insert(t);
}
}
return std::vector<CompressionType>(dict_compression_types.begin(),
dict_compression_types.end());
}
std::vector<ChecksumType> GetSupportedChecksums() {
std::set<ChecksumType> checksum_types;
for (const auto& e : OptionsHelper::checksum_type_string_map) {
checksum_types.insert(e.second);
}
return std::vector<ChecksumType>(checksum_types.begin(),
checksum_types.end());
}
static bool ParseOptionHelper(void* opt_address, const OptionType& opt_type,
const std::string& value) {
switch (opt_type) {
case OptionType::kBoolean:
*static_cast<bool*>(opt_address) = ParseBoolean("", value);
break;
case OptionType::kInt:
*static_cast<int*>(opt_address) = ParseInt(value);
break;
case OptionType::kInt32T:
*static_cast<int32_t*>(opt_address) = ParseInt32(value);
break;
case OptionType::kInt64T:
PutUnaligned(static_cast<int64_t*>(opt_address), ParseInt64(value));
break;
case OptionType::kUInt:
*static_cast<unsigned int*>(opt_address) = ParseUint32(value);
break;
case OptionType::kUInt8T:
*static_cast<uint8_t*>(opt_address) = ParseUint8(value);
break;
case OptionType::kUInt32T:
*static_cast<uint32_t*>(opt_address) = ParseUint32(value);
break;
case OptionType::kUInt64T:
PutUnaligned(static_cast<uint64_t*>(opt_address), ParseUint64(value));
break;
case OptionType::kSizeT:
PutUnaligned(static_cast<size_t*>(opt_address), ParseSizeT(value));
break;
case OptionType::kAtomicInt:
static_cast<std::atomic<int>*>(opt_address)
->store(ParseInt(value), std::memory_order_release);
break;
case OptionType::kString:
*static_cast<std::string*>(opt_address) = value;
break;
case OptionType::kDouble:
*static_cast<double*>(opt_address) = ParseDouble(value);
break;
case OptionType::kCompactionStyle:
return ParseEnum<CompactionStyle>(
compaction_style_string_map, value,
static_cast<CompactionStyle*>(opt_address));
case OptionType::kCompactionPri:
return ParseEnum<CompactionPri>(compaction_pri_string_map, value,
static_cast<CompactionPri*>(opt_address));
case OptionType::kCompressionType:
return ParseEnum<CompressionType>(
compression_type_string_map, value,
static_cast<CompressionType*>(opt_address));
case OptionType::kChecksumType:
return ParseEnum<ChecksumType>(checksum_type_string_map, value,
static_cast<ChecksumType*>(opt_address));
case OptionType::kEncodingType:
return ParseEnum<EncodingType>(encoding_type_string_map, value,
static_cast<EncodingType*>(opt_address));
case OptionType::kCompactionStopStyle:
return ParseEnum<CompactionStopStyle>(
compaction_stop_style_string_map, value,
static_cast<CompactionStopStyle*>(opt_address));
case OptionType::kEncodedString: {
std::string* output_addr = static_cast<std::string*>(opt_address);
(Slice(value)).DecodeHex(output_addr);
break;
}
case OptionType::kTemperature: {
return ParseEnum<Temperature>(temperature_string_map, value,
static_cast<Temperature*>(opt_address));
}
default:
return false;
}
return true;
}
bool SerializeSingleOptionHelper(const void* opt_address,
const OptionType opt_type,
std::string* value) {
assert(value);
switch (opt_type) {
case OptionType::kBoolean:
*value = *(static_cast<const bool*>(opt_address)) ? "true" : "false";
break;
case OptionType::kInt:
*value = std::to_string(*(static_cast<const int*>(opt_address)));
break;
case OptionType::kInt32T:
*value = std::to_string(*(static_cast<const int32_t*>(opt_address)));
break;
case OptionType::kInt64T:
{
int64_t v;
GetUnaligned(static_cast<const int64_t*>(opt_address), &v);
*value = std::to_string(v);
}
break;
case OptionType::kUInt:
*value = std::to_string(*(static_cast<const unsigned int*>(opt_address)));
break;
case OptionType::kUInt8T:
*value = std::to_string(*(static_cast<const uint8_t*>(opt_address)));
break;
case OptionType::kUInt32T:
*value = std::to_string(*(static_cast<const uint32_t*>(opt_address)));
break;
case OptionType::kUInt64T:
{
uint64_t v;
GetUnaligned(static_cast<const uint64_t*>(opt_address), &v);
*value = std::to_string(v);
}
break;
case OptionType::kSizeT:
{
size_t v;
GetUnaligned(static_cast<const size_t*>(opt_address), &v);
*value = std::to_string(v);
}
break;
case OptionType::kDouble:
*value = std::to_string(*(static_cast<const double*>(opt_address)));
break;
case OptionType::kAtomicInt:
*value = std::to_string(static_cast<const std::atomic<int>*>(opt_address)
->load(std::memory_order_acquire));
break;
case OptionType::kString:
*value =
EscapeOptionString(*(static_cast<const std::string*>(opt_address)));
break;
case OptionType::kCompactionStyle:
return SerializeEnum<CompactionStyle>(
compaction_style_string_map,
*(static_cast<const CompactionStyle*>(opt_address)), value);
case OptionType::kCompactionPri:
return SerializeEnum<CompactionPri>(
compaction_pri_string_map,
*(static_cast<const CompactionPri*>(opt_address)), value);
case OptionType::kCompressionType:
return SerializeEnum<CompressionType>(
compression_type_string_map,
*(static_cast<const CompressionType*>(opt_address)), value);
break;
case OptionType::kChecksumType:
return SerializeEnum<ChecksumType>(
checksum_type_string_map,
*static_cast<const ChecksumType*>(opt_address), value);
case OptionType::kEncodingType:
return SerializeEnum<EncodingType>(
encoding_type_string_map,
*static_cast<const EncodingType*>(opt_address), value);
case OptionType::kCompactionStopStyle:
return SerializeEnum<CompactionStopStyle>(
compaction_stop_style_string_map,
*static_cast<const CompactionStopStyle*>(opt_address), value);
case OptionType::kEncodedString: {
const auto* ptr = static_cast<const std::string*>(opt_address);
*value = (Slice(*ptr)).ToString(true);
break;
}
case OptionType::kTemperature: {
return SerializeEnum<Temperature>(
temperature_string_map, *static_cast<const Temperature*>(opt_address),
value);
}
default:
return false;
}
return true;
}
template <typename T>
Status ConfigureFromMap(
const ConfigOptions& config_options,
const std::unordered_map<std::string, std::string>& opt_map,
const std::string& option_name, Configurable* config, T* new_opts) {
Status s = config->ConfigureFromMap(config_options, opt_map);
if (s.ok()) {
*new_opts = *(config->GetOptions<T>(option_name));
}
return s;
}
Status StringToMap(const std::string& opts_str,
std::unordered_map<std::string, std::string>* opts_map) {
assert(opts_map);
// Example:
// opts_str = "write_buffer_size=1024;max_write_buffer_number=2;"
// "nested_opt={opt1=1;opt2=2};max_bytes_for_level_base=100"
size_t pos = 0;
std::string opts = trim(opts_str);
// If the input string starts and ends with "{...}", strip off the brackets
while (opts.size() > 2 && opts[0] == '{' && opts[opts.size() - 1] == '}') {
opts = trim(opts.substr(1, opts.size() - 2));
}
while (pos < opts.size()) {
size_t eq_pos = opts.find_first_of("={};", pos);
if (eq_pos == std::string::npos) {
return Status::InvalidArgument("Mismatched key value pair, '=' expected");
} else if (opts[eq_pos] != '=') {
return Status::InvalidArgument("Unexpected char in key");
}
std::string key = trim(opts.substr(pos, eq_pos - pos));
if (key.empty()) {
return Status::InvalidArgument("Empty key found");
}
std::string value;
Status s = OptionTypeInfo::NextToken(opts, ';', eq_pos + 1, &pos, &value);
if (!s.ok()) {
return s;
} else {
(*opts_map)[key] = value;
if (pos == std::string::npos) {
break;
} else {
pos++;
}
}
}
return Status::OK();
}
Status GetStringFromDBOptions(std::string* opt_string,
const DBOptions& db_options,
const std::string& delimiter) {
ConfigOptions config_options(db_options);
config_options.delimiter = delimiter;
return GetStringFromDBOptions(config_options, db_options, opt_string);
}
Status GetStringFromDBOptions(const ConfigOptions& config_options,
const DBOptions& db_options,
std::string* opt_string) {
assert(opt_string);
opt_string->clear();
auto config = DBOptionsAsConfigurable(db_options);
return config->GetOptionString(config_options, opt_string);
}
Status GetStringFromColumnFamilyOptions(std::string* opt_string,
const ColumnFamilyOptions& cf_options,
const std::string& delimiter) {
ConfigOptions config_options;
config_options.delimiter = delimiter;
return GetStringFromColumnFamilyOptions(config_options, cf_options,
opt_string);
}
Status GetStringFromColumnFamilyOptions(const ConfigOptions& config_options,
const ColumnFamilyOptions& cf_options,
std::string* opt_string) {
const auto config = CFOptionsAsConfigurable(cf_options);
return config->GetOptionString(config_options, opt_string);
}
Status GetStringFromCompressionType(std::string* compression_str,
CompressionType compression_type) {
bool ok = SerializeEnum<CompressionType>(compression_type_string_map,
compression_type, compression_str);
if (ok) {
return Status::OK();
} else {
return Status::InvalidArgument("Invalid compression types");
}
}
Status GetColumnFamilyOptionsFromMap(
const ConfigOptions& config_options,
const ColumnFamilyOptions& base_options,
const std::unordered_map<std::string, std::string>& opts_map,
ColumnFamilyOptions* new_options) {
assert(new_options);
*new_options = base_options;
const auto config = CFOptionsAsConfigurable(base_options);
Status s = ConfigureFromMap<ColumnFamilyOptions>(
config_options, opts_map, OptionsHelper::kCFOptionsName, config.get(),
new_options);
// Translate any errors (NotFound, NotSupported, to InvalidArgument
if (s.ok() || s.IsInvalidArgument()) {
return s;
} else {
return Status::InvalidArgument(s.getState());
}
}
Status GetColumnFamilyOptionsFromString(const ConfigOptions& config_options,
const ColumnFamilyOptions& base_options,
const std::string& opts_str,
ColumnFamilyOptions* new_options) {
std::unordered_map<std::string, std::string> opts_map;
Status s = StringToMap(opts_str, &opts_map);
if (!s.ok()) {
*new_options = base_options;
return s;
}
return GetColumnFamilyOptionsFromMap(config_options, base_options, opts_map,
new_options);
}
Status GetDBOptionsFromMap(
const ConfigOptions& config_options, const DBOptions& base_options,
const std::unordered_map<std::string, std::string>& opts_map,
DBOptions* new_options) {
assert(new_options);
*new_options = base_options;
auto config = DBOptionsAsConfigurable(base_options);
Status s = ConfigureFromMap<DBOptions>(config_options, opts_map,
OptionsHelper::kDBOptionsName,
config.get(), new_options);
// Translate any errors (NotFound, NotSupported, to InvalidArgument
if (s.ok() || s.IsInvalidArgument()) {
return s;
} else {
return Status::InvalidArgument(s.getState());
}
}
Status GetDBOptionsFromString(const ConfigOptions& config_options,
const DBOptions& base_options,
const std::string& opts_str,
DBOptions* new_options) {
std::unordered_map<std::string, std::string> opts_map;
Status s = StringToMap(opts_str, &opts_map);
if (!s.ok()) {
*new_options = base_options;
return s;
}
return GetDBOptionsFromMap(config_options, base_options, opts_map,
new_options);
}
Status GetOptionsFromString(const Options& base_options,
const std::string& opts_str, Options* new_options) {
ConfigOptions config_options(base_options);
config_options.input_strings_escaped = false;
config_options.ignore_unknown_options = false;
return GetOptionsFromString(config_options, base_options, opts_str,
new_options);
}
Status GetOptionsFromString(const ConfigOptions& config_options,
const Options& base_options,
const std::string& opts_str, Options* new_options) {
ColumnFamilyOptions new_cf_options;
std::unordered_map<std::string, std::string> unused_opts;
std::unordered_map<std::string, std::string> opts_map;
assert(new_options);
*new_options = base_options;
Status s = StringToMap(opts_str, &opts_map);
if (!s.ok()) {
return s;
}
auto config = DBOptionsAsConfigurable(base_options);
s = config->ConfigureFromMap(config_options, opts_map, &unused_opts);
if (s.ok()) {
DBOptions* new_db_options =
config->GetOptions<DBOptions>(OptionsHelper::kDBOptionsName);
if (!unused_opts.empty()) {
s = GetColumnFamilyOptionsFromMap(config_options, base_options,
unused_opts, &new_cf_options);
if (s.ok()) {
*new_options = Options(*new_db_options, new_cf_options);
}
} else {
*new_options = Options(*new_db_options, base_options);
}
}
// Translate any errors (NotFound, NotSupported, to InvalidArgument
if (s.ok() || s.IsInvalidArgument()) {
return s;
} else {
return Status::InvalidArgument(s.getState());
}
}
std::unordered_map<std::string, EncodingType>
OptionsHelper::encoding_type_string_map = {{"kPlain", kPlain},
{"kPrefix", kPrefix}};
std::unordered_map<std::string, CompactionStyle>
OptionsHelper::compaction_style_string_map = {
{"kCompactionStyleLevel", kCompactionStyleLevel},
{"kCompactionStyleUniversal", kCompactionStyleUniversal},
{"kCompactionStyleFIFO", kCompactionStyleFIFO},
{"kCompactionStyleNone", kCompactionStyleNone}};
std::unordered_map<std::string, CompactionPri>
OptionsHelper::compaction_pri_string_map = {
{"kByCompensatedSize", kByCompensatedSize},
{"kOldestLargestSeqFirst", kOldestLargestSeqFirst},
{"kOldestSmallestSeqFirst", kOldestSmallestSeqFirst},
{"kMinOverlappingRatio", kMinOverlappingRatio},
{"kRoundRobin", kRoundRobin}};
std::unordered_map<std::string, CompactionStopStyle>
OptionsHelper::compaction_stop_style_string_map = {
{"kCompactionStopStyleSimilarSize", kCompactionStopStyleSimilarSize},
{"kCompactionStopStyleTotalSize", kCompactionStopStyleTotalSize}};
std::unordered_map<std::string, Temperature>
OptionsHelper::temperature_string_map = {
{"kUnknown", Temperature::kUnknown},
{"kHot", Temperature::kHot},
{"kWarm", Temperature::kWarm},
{"kCold", Temperature::kCold}};
std::unordered_map<std::string, PrepopulateBlobCache>
OptionsHelper::prepopulate_blob_cache_string_map = {
{"kDisable", PrepopulateBlobCache::kDisable},
{"kFlushOnly", PrepopulateBlobCache::kFlushOnly}};
Status OptionTypeInfo::NextToken(const std::string& opts, char delimiter,
size_t pos, size_t* end, std::string* token) {
while (pos < opts.size() && isspace(opts[pos])) {
++pos;
}
// Empty value at the end
if (pos >= opts.size()) {
*token = "";
*end = std::string::npos;
return Status::OK();
} else if (opts[pos] == '{') {
int count = 1;
size_t brace_pos = pos + 1;
while (brace_pos < opts.size()) {
if (opts[brace_pos] == '{') {
++count;
} else if (opts[brace_pos] == '}') {
--count;
if (count == 0) {
break;
}
}
++brace_pos;
}
// found the matching closing brace
if (count == 0) {
*token = trim(opts.substr(pos + 1, brace_pos - pos - 1));
// skip all whitespace and move to the next delimiter
// brace_pos points to the next position after the matching '}'
pos = brace_pos + 1;
while (pos < opts.size() && isspace(opts[pos])) {
++pos;
}
if (pos < opts.size() && opts[pos] != delimiter) {
return Status::InvalidArgument("Unexpected chars after nested options");
}
*end = pos;
} else {
return Status::InvalidArgument(
"Mismatched curly braces for nested options");
}
} else {
*end = opts.find(delimiter, pos);
if (*end == std::string::npos) {
// It either ends with a trailing semi-colon or the last key-value pair
*token = trim(opts.substr(pos));
} else {
*token = trim(opts.substr(pos, *end - pos));
}
}
return Status::OK();
}
Status OptionTypeInfo::Parse(const ConfigOptions& config_options,
const std::string& opt_name,
const std::string& value, void* opt_ptr) const {
if (IsDeprecated()) {
return Status::OK();
}
try {
const std::string& opt_value = config_options.input_strings_escaped
? UnescapeOptionString(value)
: value;
if (opt_ptr == nullptr) {
return Status::NotFound("Could not find option", opt_name);
} else if (parse_func_ != nullptr) {
ConfigOptions copy = config_options;
copy.invoke_prepare_options = false;
void* opt_addr = GetOffset(opt_ptr);
return parse_func_(copy, opt_name, opt_value, opt_addr);
} else if (ParseOptionHelper(GetOffset(opt_ptr), type_, opt_value)) {
return Status::OK();
} else if (IsConfigurable()) {
// The option is <config>.<name>
Configurable* config = AsRawPointer<Configurable>(opt_ptr);
if (opt_value.empty()) {
return Status::OK();
} else if (config == nullptr) {
return Status::NotFound("Could not find configurable: ", opt_name);
} else {
ConfigOptions copy = config_options;
copy.ignore_unknown_options = false;
copy.invoke_prepare_options = false;
if (opt_value.find('=') != std::string::npos) {
return config->ConfigureFromString(copy, opt_value);
} else {
return config->ConfigureOption(copy, opt_name, opt_value);
}
}
} else if (IsByName()) {
return Status::NotSupported("Deserializing the option " + opt_name +
" is not supported");
} else {
return Status::InvalidArgument("Error parsing:", opt_name);
}
} catch (std::exception& e) {
return Status::InvalidArgument("Error parsing " + opt_name + ":" +
std::string(e.what()));
}
}
Status OptionTypeInfo::ParseType(
const ConfigOptions& config_options, const std::string& opts_str,
const std::unordered_map<std::string, OptionTypeInfo>& type_map,
void* opt_addr, std::unordered_map<std::string, std::string>* unused) {
std::unordered_map<std::string, std::string> opts_map;
Status status = StringToMap(opts_str, &opts_map);
if (!status.ok()) {
return status;
} else {
return ParseType(config_options, opts_map, type_map, opt_addr, unused);
}
}
Status OptionTypeInfo::ParseType(
const ConfigOptions& config_options,
const std::unordered_map<std::string, std::string>& opts_map,
const std::unordered_map<std::string, OptionTypeInfo>& type_map,
void* opt_addr, std::unordered_map<std::string, std::string>* unused) {
for (const auto& opts_iter : opts_map) {
std::string opt_name;
const auto* opt_info = Find(opts_iter.first, type_map, &opt_name);
if (opt_info != nullptr) {
Status status =
opt_info->Parse(config_options, opt_name, opts_iter.second, opt_addr);
if (!status.ok()) {
return status;
}
} else if (unused != nullptr) {
(*unused)[opts_iter.first] = opts_iter.second;
} else if (!config_options.ignore_unknown_options) {
return Status::NotFound("Unrecognized option", opts_iter.first);
}
}
return Status::OK();
}
Status OptionTypeInfo::ParseStruct(
const ConfigOptions& config_options, const std::string& struct_name,
const std::unordered_map<std::string, OptionTypeInfo>* struct_map,
const std::string& opt_name, const std::string& opt_value, void* opt_addr) {
assert(struct_map);
Status status;
if (opt_name == struct_name || EndsWith(opt_name, "." + struct_name)) {
// This option represents the entire struct
std::unordered_map<std::string, std::string> unused;
status =
ParseType(config_options, opt_value, *struct_map, opt_addr, &unused);
if (status.ok() && !unused.empty()) {
status = Status::InvalidArgument(
"Unrecognized option", struct_name + "." + unused.begin()->first);
}
} else if (StartsWith(opt_name, struct_name + ".")) {
// This option represents a nested field in the struct (e.g, struct.field)
std::string elem_name;
const auto opt_info =
Find(opt_name.substr(struct_name.size() + 1), *struct_map, &elem_name);
if (opt_info != nullptr) {
status = opt_info->Parse(config_options, elem_name, opt_value, opt_addr);
} else {
status = Status::InvalidArgument("Unrecognized option", opt_name);
}
} else {
// This option represents a field in the struct (e.g. field)
std::string elem_name;
const auto opt_info = Find(opt_name, *struct_map, &elem_name);
if (opt_info != nullptr) {
status = opt_info->Parse(config_options, elem_name, opt_value, opt_addr);
} else {
status = Status::InvalidArgument("Unrecognized option",
struct_name + "." + opt_name);
}
}
return status;
}
Status OptionTypeInfo::Serialize(const ConfigOptions& config_options,
const std::string& opt_name,
const void* const opt_ptr,
std::string* opt_value) const {
// If the option is no longer used in rocksdb and marked as deprecated,
// we skip it in the serialization.
if (opt_ptr == nullptr || IsDeprecated()) {
return Status::OK();
} else if (IsEnabled(OptionTypeFlags::kDontSerialize)) {
return Status::NotSupported("Cannot serialize option: ", opt_name);
} else if (serialize_func_ != nullptr) {
const void* opt_addr = GetOffset(opt_ptr);
return serialize_func_(config_options, opt_name, opt_addr, opt_value);
} else if (IsCustomizable()) {
const Customizable* custom = AsRawPointer<Customizable>(opt_ptr);
opt_value->clear();
if (custom == nullptr) {
// We do not have a custom object to serialize.
// If the option is not mutable and we are doing only mutable options,
// we return an empty string (which will cause the option not to be
// printed). Otherwise, we return the "nullptr" string, which will result
// in "option=nullptr" being printed.
if (IsMutable() || !config_options.mutable_options_only) {
*opt_value = kNullptrString;
} else {
*opt_value = "";
}
} else if (IsEnabled(OptionTypeFlags::kStringNameOnly) &&
!config_options.IsDetailed()) {
if (!config_options.mutable_options_only || IsMutable()) {
*opt_value = custom->GetId();
}
} else {
ConfigOptions embedded = config_options;
embedded.delimiter = ";";
// If this option is mutable, everything inside it should be considered
// mutable
if (IsMutable()) {
embedded.mutable_options_only = false;
}
std::string value = custom->ToString(embedded);
if (!embedded.mutable_options_only ||
value.find('=') != std::string::npos) {
*opt_value = value;
} else {
*opt_value = "";
}
}
return Status::OK();
} else if (IsConfigurable()) {
const Configurable* config = AsRawPointer<Configurable>(opt_ptr);
if (config != nullptr) {
ConfigOptions embedded = config_options;
embedded.delimiter = ";";
*opt_value = config->ToString(embedded);
}
return Status::OK();
} else if (config_options.mutable_options_only && !IsMutable()) {
return Status::OK();
} else if (SerializeSingleOptionHelper(GetOffset(opt_ptr), type_,
opt_value)) {
return Status::OK();
} else {
return Status::InvalidArgument("Cannot serialize option: ", opt_name);
}
}
Status OptionTypeInfo::SerializeType(
const ConfigOptions& config_options,
const std::unordered_map<std::string, OptionTypeInfo>& type_map,
const void* opt_addr, std::string* result) {
Status status;
for (const auto& iter : type_map) {
std::string single;
const auto& opt_info = iter.second;
if (opt_info.ShouldSerialize()) {
status =
opt_info.Serialize(config_options, iter.first, opt_addr, &single);
if (!status.ok()) {
return status;
} else {
result->append(iter.first + "=" + single + config_options.delimiter);
}
}
}
return status;
}
Status OptionTypeInfo::SerializeStruct(
const ConfigOptions& config_options, const std::string& struct_name,
const std::unordered_map<std::string, OptionTypeInfo>* struct_map,
const std::string& opt_name, const void* opt_addr, std::string* value) {
assert(struct_map);
Status status;
if (EndsWith(opt_name, struct_name)) {
// We are going to write the struct as "{ prop1=value1; prop2=value2;}.
// Set the delimiter to ";" so that the everything will be on one line.
ConfigOptions embedded = config_options;
embedded.delimiter = ";";
// This option represents the entire struct
std::string result;
status = SerializeType(embedded, *struct_map, opt_addr, &result);
if (!status.ok()) {
return status;
} else {
*value = "{" + result + "}";
}
} else if (StartsWith(opt_name, struct_name + ".")) {
// This option represents a nested field in the struct (e.g, struct.field)
std::string elem_name;
const auto opt_info =
Find(opt_name.substr(struct_name.size() + 1), *struct_map, &elem_name);
if (opt_info != nullptr) {
status = opt_info->Serialize(config_options, elem_name, opt_addr, value);
} else {
status = Status::InvalidArgument("Unrecognized option", opt_name);
}
} else {
// This option represents a field in the struct (e.g. field)
std::string elem_name;
const auto opt_info = Find(opt_name, *struct_map, &elem_name);
if (opt_info == nullptr) {
status = Status::InvalidArgument("Unrecognized option", opt_name);
} else if (opt_info->ShouldSerialize()) {
status = opt_info->Serialize(config_options, opt_name + "." + elem_name,
opt_addr, value);
}
}
return status;
}
template <typename T>
bool IsOptionEqual(const void* offset1, const void* offset2) {
return (*static_cast<const T*>(offset1) == *static_cast<const T*>(offset2));
}
static bool AreEqualDoubles(const double a, const double b) {
return (fabs(a - b) < 0.00001);
}
static bool AreOptionsEqual(OptionType type, const void* this_offset,
const void* that_offset) {
switch (type) {
case OptionType::kBoolean:
return IsOptionEqual<bool>(this_offset, that_offset);
case OptionType::kInt:
return IsOptionEqual<int>(this_offset, that_offset);
case OptionType::kUInt:
return IsOptionEqual<unsigned int>(this_offset, that_offset);
case OptionType::kInt32T:
return IsOptionEqual<int32_t>(this_offset, that_offset);
case OptionType::kInt64T: {
int64_t v1, v2;
GetUnaligned(static_cast<const int64_t*>(this_offset), &v1);
GetUnaligned(static_cast<const int64_t*>(that_offset), &v2);
return (v1 == v2);
}
case OptionType::kUInt8T:
return IsOptionEqual<uint8_t>(this_offset, that_offset);
case OptionType::kUInt32T:
return IsOptionEqual<uint32_t>(this_offset, that_offset);
case OptionType::kUInt64T: {
uint64_t v1, v2;
GetUnaligned(static_cast<const uint64_t*>(this_offset), &v1);
GetUnaligned(static_cast<const uint64_t*>(that_offset), &v2);
return (v1 == v2);
}
case OptionType::kSizeT: {
size_t v1, v2;
GetUnaligned(static_cast<const size_t*>(this_offset), &v1);
GetUnaligned(static_cast<const size_t*>(that_offset), &v2);
return (v1 == v2);
}
case OptionType::kAtomicInt:
return IsOptionEqual<std::atomic<int>>(this_offset, that_offset);
case OptionType::kString:
return IsOptionEqual<std::string>(this_offset, that_offset);
case OptionType::kDouble:
return AreEqualDoubles(*static_cast<const double*>(this_offset),
*static_cast<const double*>(that_offset));
case OptionType::kCompactionStyle:
return IsOptionEqual<CompactionStyle>(this_offset, that_offset);
case OptionType::kCompactionStopStyle:
return IsOptionEqual<CompactionStopStyle>(this_offset, that_offset);
case OptionType::kCompactionPri:
return IsOptionEqual<CompactionPri>(this_offset, that_offset);
case OptionType::kCompressionType:
return IsOptionEqual<CompressionType>(this_offset, that_offset);
case OptionType::kChecksumType:
return IsOptionEqual<ChecksumType>(this_offset, that_offset);
case OptionType::kEncodingType:
return IsOptionEqual<EncodingType>(this_offset, that_offset);
case OptionType::kEncodedString:
return IsOptionEqual<std::string>(this_offset, that_offset);
case OptionType::kTemperature:
return IsOptionEqual<Temperature>(this_offset, that_offset);
default:
return false;
} // End switch
}
bool OptionTypeInfo::AreEqual(const ConfigOptions& config_options,
const std::string& opt_name,
const void* const this_ptr,
const void* const that_ptr,
std::string* mismatch) const {
auto level = GetSanityLevel();
if (!config_options.IsCheckEnabled(level)) {
return true; // If the sanity level is not being checked, skip it
}
if (this_ptr == nullptr || that_ptr == nullptr) {
if (this_ptr == that_ptr) {
return true;
}
} else if (equals_func_ != nullptr) {
const void* this_addr = GetOffset(this_ptr);
const void* that_addr = GetOffset(that_ptr);
if (equals_func_(config_options, opt_name, this_addr, that_addr,
mismatch)) {
return true;
}
} else {
const void* this_addr = GetOffset(this_ptr);
const void* that_addr = GetOffset(that_ptr);
if (AreOptionsEqual(type_, this_addr, that_addr)) {
return true;
} else if (IsConfigurable()) {
const auto* this_config = AsRawPointer<Configurable>(this_ptr);
const auto* that_config = AsRawPointer<Configurable>(that_ptr);
if (this_config == that_config) {
return true;
} else if (this_config != nullptr && that_config != nullptr) {
std::string bad_name;
bool matches;
if (level < config_options.sanity_level) {
ConfigOptions copy = config_options;
copy.sanity_level = level;
matches = this_config->AreEquivalent(copy, that_config, &bad_name);
} else {
matches = this_config->AreEquivalent(config_options, that_config,
&bad_name);
}
if (!matches) {
*mismatch = opt_name + "." + bad_name;
}
return matches;
}
}
}
if (mismatch->empty()) {
*mismatch = opt_name;
}
return false;
}
bool OptionTypeInfo::TypesAreEqual(
const ConfigOptions& config_options,
const std::unordered_map<std::string, OptionTypeInfo>& type_map,
const void* this_addr, const void* that_addr, std::string* mismatch) {
for (const auto& iter : type_map) {
const auto& opt_info = iter.second;
if (!opt_info.AreEqual(config_options, iter.first, this_addr, that_addr,
mismatch)) {
return false;
}
}
return true;
}
bool OptionTypeInfo::StructsAreEqual(
const ConfigOptions& config_options, const std::string& struct_name,
const std::unordered_map<std::string, OptionTypeInfo>* struct_map,
const std::string& opt_name, const void* this_addr, const void* that_addr,
std::string* mismatch) {
assert(struct_map);
bool matches = true;
std::string result;
if (EndsWith(opt_name, struct_name)) {
// This option represents the entire struct
matches = TypesAreEqual(config_options, *struct_map, this_addr, that_addr,
&result);
if (!matches) {
*mismatch = struct_name + "." + result;
return false;
}
} else if (StartsWith(opt_name, struct_name + ".")) {
// This option represents a nested field in the struct (e.g, struct.field)
std::string elem_name;
const auto opt_info =
Find(opt_name.substr(struct_name.size() + 1), *struct_map, &elem_name);
assert(opt_info);
if (opt_info == nullptr) {
*mismatch = opt_name;
matches = false;
} else if (!opt_info->AreEqual(config_options, elem_name, this_addr,
that_addr, &result)) {
matches = false;
*mismatch = struct_name + "." + result;
}
} else {
// This option represents a field in the struct (e.g. field)
std::string elem_name;
const auto opt_info = Find(opt_name, *struct_map, &elem_name);
assert(opt_info);
if (opt_info == nullptr) {
*mismatch = struct_name + "." + opt_name;
matches = false;
} else if (!opt_info->AreEqual(config_options, elem_name, this_addr,
that_addr, &result)) {
matches = false;
*mismatch = struct_name + "." + result;
}
}
return matches;
}
bool MatchesOptionsTypeFromMap(
const ConfigOptions& config_options,
const std::unordered_map<std::string, OptionTypeInfo>& type_map,
const void* const this_ptr, const void* const that_ptr,
std::string* mismatch) {
for (auto& pair : type_map) {
// We skip checking deprecated variables as they might
// contain random values since they might not be initialized
if (config_options.IsCheckEnabled(pair.second.GetSanityLevel())) {
if (!pair.second.AreEqual(config_options, pair.first, this_ptr, that_ptr,
mismatch) &&
!pair.second.AreEqualByName(config_options, pair.first, this_ptr,
that_ptr)) {
return false;
}
}
}
return true;
}
bool OptionTypeInfo::AreEqualByName(const ConfigOptions& config_options,
const std::string& opt_name,
const void* const this_ptr,
const void* const that_ptr) const {
if (IsByName()) {
std::string that_value;
if (Serialize(config_options, opt_name, that_ptr, &that_value).ok()) {
return AreEqualByName(config_options, opt_name, this_ptr, that_value);
}
}
return false;
}
bool OptionTypeInfo::AreEqualByName(const ConfigOptions& config_options,
const std::string& opt_name,
const void* const opt_ptr,
const std::string& that_value) const {
std::string this_value;
if (!IsByName()) {
return false;
} else if (!Serialize(config_options, opt_name, opt_ptr, &this_value).ok()) {
return false;
} else if (IsEnabled(OptionVerificationType::kByNameAllowFromNull)) {
if (that_value == kNullptrString) {
return true;
}
} else if (IsEnabled(OptionVerificationType::kByNameAllowNull)) {
if (that_value == kNullptrString) {
return true;
}
}
return (this_value == that_value);
}
Status OptionTypeInfo::Prepare(const ConfigOptions& config_options,
const std::string& name, void* opt_ptr) const {
if (ShouldPrepare()) {
if (prepare_func_ != nullptr) {
void* opt_addr = GetOffset(opt_ptr);
return prepare_func_(config_options, name, opt_addr);
} else if (IsConfigurable()) {
Configurable* config = AsRawPointer<Configurable>(opt_ptr);
if (config != nullptr) {
return config->PrepareOptions(config_options);
} else if (!CanBeNull()) {
return Status::NotFound("Missing configurable object", name);
}
}
}
return Status::OK();
}
Status OptionTypeInfo::Validate(const DBOptions& db_opts,
const ColumnFamilyOptions& cf_opts,
const std::string& name,
const void* opt_ptr) const {
if (ShouldValidate()) {
if (validate_func_ != nullptr) {
const void* opt_addr = GetOffset(opt_ptr);
return validate_func_(db_opts, cf_opts, name, opt_addr);
} else if (IsConfigurable()) {
const Configurable* config = AsRawPointer<Configurable>(opt_ptr);
if (config != nullptr) {
return config->ValidateOptions(db_opts, cf_opts);
} else if (!CanBeNull()) {
return Status::NotFound("Missing configurable object", name);
}
}
}
return Status::OK();
}
const OptionTypeInfo* OptionTypeInfo::Find(
const std::string& opt_name,
const std::unordered_map<std::string, OptionTypeInfo>& opt_map,
std::string* elem_name) {
const auto iter = opt_map.find(opt_name); // Look up the value in the map
if (iter != opt_map.end()) { // Found the option in the map
*elem_name = opt_name; // Return the name
return &(iter->second); // Return the contents of the iterator
} else {
auto idx = opt_name.find('.'); // Look for a separator
if (idx > 0 && idx != std::string::npos) { // We found a separator
auto siter =
opt_map.find(opt_name.substr(0, idx)); // Look for the short name
if (siter != opt_map.end()) { // We found the short name
if (siter->second.IsStruct() || // If the object is a struct
siter->second.IsConfigurable()) { // or a Configurable
*elem_name = opt_name.substr(idx + 1); // Return the rest
return &(siter->second); // Return the contents of the iterator
}
}
}
}
return nullptr;
}
} // namespace ROCKSDB_NAMESPACE
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