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rocksdb/options/options_helper.cc
Levi Tamasi dc5de45af8 Support readahead during compaction for blob files (#9187) 
Summary:
The patch adds a new BlobDB configuration option `blob_compaction_readahead_size`
that can be used to enable prefetching data from blob files during compaction.
This is important when using storage with higher latencies like HDDs or remote filesystems.
If enabled, prefetching is used for all cases when blobs are read during compaction,
namely garbage collection, compaction filters (when the existing value has to be read from
a blob file), and `Merge` (when the value of the base `Put` is stored in a blob file).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9187

Test Plan: Ran `make check` and the stress/crash test.

Reviewed By: riversand963

Differential Revision: D32565512

Pulled By: ltamasi

fbshipit-source-id: 87be9cebc3aa01cc227bec6b5f64d827b8164f5d
2021-11-19 17:53:47 -08:00

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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 <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()
#ifndef ROCKSDB_LITE
: registry(ObjectRegistry::NewInstance())
#endif
{
env = Env::Default();
}
ConfigOptions::ConfigOptions(const DBOptions& db_opts) : env(db_opts.env) {
#ifndef ROCKSDB_LITE
registry = ObjectRegistry::NewInstance();
#endif
}
Status ValidateOptions(const DBOptions& db_opts,
const ColumnFamilyOptions& cf_opts) {
Status s;
#ifndef ROCKSDB_LITE
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);
#else
s = cf_opts.table_factory->ValidateOptions(db_opts, cf_opts);
#endif
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.track_and_verify_wals_in_manifest =
immutable_db_options.track_and_verify_wals_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.base_background_compactions =
mutable_db_options.base_background_compactions;
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.access_hint_on_compaction_start =
immutable_db_options.access_hint_on_compaction_start;
options.new_table_reader_for_compaction_inputs =
immutable_db_options.new_table_reader_for_compaction_inputs;
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;
#ifndef ROCKSDB_LITE
options.wal_filter = immutable_db_options.wal_filter;
#endif // ROCKSDB_LITE
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.preserve_deletes =
immutable_db_options.preserve_deletes;
options.two_write_queues = immutable_db_options.two_write_queues;
options.manual_wal_flush = immutable_db_options.manual_wal_flush;
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;
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->inplace_update_num_locks = moptions.inplace_update_num_locks;
cf_opts->prefix_extractor = moptions.prefix_extractor;
// 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;
// Misc options
cf_opts->max_sequential_skip_in_iterations =
moptions.max_sequential_skip_in_iterations;
cf_opts->check_flush_compaction_key_order =
moptions.check_flush_compaction_key_order;
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;
}
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->purge_redundant_kvs_while_flush =
ioptions.purge_redundant_kvs_while_flush;
cf_opts->compression_per_level = ioptions.compression_per_level;
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;
// 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"}};
std::map<CompactionStopStyle, std::string>
OptionsHelper::compaction_stop_style_to_string = {
{kCompactionStopStyleSimilarSize, "kCompactionStopStyleSimilarSize"},
{kCompactionStopStyleTotalSize, "kCompactionStopStyleTotalSize"}};
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());
}
#ifndef ROCKSDB_LITE
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::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;
}
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 = ToString(*(static_cast<const int*>(opt_address)));
break;
case OptionType::kInt32T:
*value = ToString(*(static_cast<const int32_t*>(opt_address)));
break;
case OptionType::kInt64T:
{
int64_t v;
GetUnaligned(static_cast<const int64_t*>(opt_address), &v);
*value = ToString(v);
}
break;
case OptionType::kUInt:
*value = ToString(*(static_cast<const unsigned int*>(opt_address)));
break;
case OptionType::kUInt8T:
*value = ToString(*(static_cast<const uint8_t*>(opt_address)));
break;
case OptionType::kUInt32T:
*value = ToString(*(static_cast<const uint32_t*>(opt_address)));
break;
case OptionType::kUInt64T:
{
uint64_t v;
GetUnaligned(static_cast<const uint64_t*>(opt_address), &v);
*value = ToString(v);
}
break;
case OptionType::kSizeT:
{
size_t v;
GetUnaligned(static_cast<const size_t*>(opt_address), &v);
*value = ToString(v);
}
break;
case OptionType::kDouble:
*value = ToString(*(static_cast<const double*>(opt_address)));
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::kFilterPolicy: {
const auto* ptr =
static_cast<const std::shared_ptr<FilterPolicy>*>(opt_address);
*value = ptr->get() ? ptr->get()->Name() : kNullptrString;
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;
}
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 ColumnFamilyOptions& base_options,
const std::unordered_map<std::string, std::string>& opts_map,
ColumnFamilyOptions* new_options, bool input_strings_escaped,
bool ignore_unknown_options) {
ConfigOptions config_options;
config_options.ignore_unknown_options = ignore_unknown_options;
config_options.input_strings_escaped = input_strings_escaped;
return GetColumnFamilyOptionsFromMap(config_options, base_options, opts_map,
new_options);
}
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 ColumnFamilyOptions& base_options,
const std::string& opts_str,
ColumnFamilyOptions* new_options) {
ConfigOptions config_options;
config_options.input_strings_escaped = false;
config_options.ignore_unknown_options = false;
return GetColumnFamilyOptionsFromString(config_options, base_options,
opts_str, new_options);
}
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 DBOptions& base_options,
const std::unordered_map<std::string, std::string>& opts_map,
DBOptions* new_options, bool input_strings_escaped,
bool ignore_unknown_options) {
ConfigOptions config_options(base_options);
config_options.input_strings_escaped = input_strings_escaped;
config_options.ignore_unknown_options = ignore_unknown_options;
return GetDBOptionsFromMap(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 DBOptions& base_options,
const std::string& opts_str,
DBOptions* new_options) {
ConfigOptions config_options(base_options);
config_options.input_strings_escaped = false;
config_options.ignore_unknown_options = false;
return GetDBOptionsFromString(config_options, base_options, opts_str,
new_options);
}
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}};
std::unordered_map<std::string, CompactionStopStyle>
OptionsHelper::compaction_stop_style_string_map = {
{"kCompactionStopStyleSimilarSize", kCompactionStopStyleSimilarSize},
{"kCompactionStopStyleTotalSize", kCompactionStopStyleTotalSize}};
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 {
void* opt_addr = static_cast<char*>(opt_ptr) + offset_;
const std::string& opt_value = config_options.input_strings_escaped
? UnescapeOptionString(value)
: value;
if (opt_addr == nullptr) {
return Status::NotFound("Could not find option", opt_name);
} else if (parse_func_ != nullptr) {
ConfigOptions copy = config_options;
copy.invoke_prepare_options = false;
return parse_func_(copy, opt_name, opt_value, opt_addr);
} else if (ParseOptionHelper(opt_addr, 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.
const void* opt_addr = static_cast<const char*>(opt_ptr) + offset_;
if (opt_addr == nullptr || IsDeprecated()) {
return Status::OK();
} else if (IsEnabled(OptionTypeFlags::kDontSerialize)) {
return Status::NotSupported("Cannot serialize option: ", opt_name);
} else if (serialize_func_ != nullptr) {
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(opt_addr, 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::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);
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
}
const void* this_addr = static_cast<const char*>(this_ptr) + offset_;
const void* that_addr = static_cast<const char*>(that_ptr) + offset_;
if (this_addr == nullptr || that_addr == nullptr) {
if (this_addr == that_addr) {
return true;
}
} else if (equals_func_ != nullptr) {
if (equals_func_(config_options, opt_name, this_addr, that_addr,
mismatch)) {
return true;
}
} else 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);
}
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;
}
#endif // !ROCKSDB_LITE
} // namespace ROCKSDB_NAMESPACE
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