rocksdb/db/c.cc
2014-04-27 20:57:10 +01:00

1477 lines
41 KiB
C++

// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#ifndef ROCKSDB_LITE
#include "rocksdb/c.h"
#include <stdlib.h>
#include <unistd.h>
#include "rocksdb/cache.h"
#include "rocksdb/comparator.h"
#include "rocksdb/db.h"
#include "rocksdb/env.h"
#include "rocksdb/filter_policy.h"
#include "rocksdb/iterator.h"
#include "rocksdb/merge_operator.h"
#include "rocksdb/options.h"
#include "rocksdb/status.h"
#include "rocksdb/write_batch.h"
#include "rocksdb/memtablerep.h"
#include "rocksdb/universal_compaction.h"
#include "rocksdb/statistics.h"
#include "rocksdb/slice_transform.h"
#include "rocksdb/table.h"
using rocksdb::Cache;
using rocksdb::Comparator;
using rocksdb::CompressionType;
using rocksdb::DB;
using rocksdb::Env;
using rocksdb::InfoLogLevel;
using rocksdb::FileLock;
using rocksdb::FilterPolicy;
using rocksdb::FlushOptions;
using rocksdb::Iterator;
using rocksdb::Logger;
using rocksdb::MergeOperator;
using rocksdb::NewBloomFilterPolicy;
using rocksdb::NewLRUCache;
using rocksdb::Options;
using rocksdb::RandomAccessFile;
using rocksdb::Range;
using rocksdb::ReadOptions;
using rocksdb::SequentialFile;
using rocksdb::Slice;
using rocksdb::SliceTransform;
using rocksdb::Snapshot;
using rocksdb::Status;
using rocksdb::WritableFile;
using rocksdb::WriteBatch;
using rocksdb::WriteOptions;
using rocksdb::LiveFileMetaData;
using std::shared_ptr;
extern "C" {
struct rocksdb_t { DB* rep; };
struct rocksdb_iterator_t { Iterator* rep; };
struct rocksdb_writebatch_t { WriteBatch rep; };
struct rocksdb_snapshot_t { const Snapshot* rep; };
struct rocksdb_flushoptions_t { FlushOptions rep; };
struct rocksdb_readoptions_t { ReadOptions rep; };
struct rocksdb_writeoptions_t { WriteOptions rep; };
struct rocksdb_options_t { Options rep; };
struct rocksdb_seqfile_t { SequentialFile* rep; };
struct rocksdb_randomfile_t { RandomAccessFile* rep; };
struct rocksdb_writablefile_t { WritableFile* rep; };
struct rocksdb_filelock_t { FileLock* rep; };
struct rocksdb_logger_t { shared_ptr<Logger> rep; };
struct rocksdb_cache_t { shared_ptr<Cache> rep; };
struct rocksdb_livefiles_t { std::vector<LiveFileMetaData> rep; };
struct rocksdb_comparator_t : public Comparator {
void* state_;
void (*destructor_)(void*);
int (*compare_)(
void*,
const char* a, size_t alen,
const char* b, size_t blen);
const char* (*name_)(void*);
virtual ~rocksdb_comparator_t() {
(*destructor_)(state_);
}
virtual int Compare(const Slice& a, const Slice& b) const {
return (*compare_)(state_, a.data(), a.size(), b.data(), b.size());
}
virtual const char* Name() const {
return (*name_)(state_);
}
// No-ops since the C binding does not support key shortening methods.
virtual void FindShortestSeparator(std::string*, const Slice&) const { }
virtual void FindShortSuccessor(std::string* key) const { }
};
struct rocksdb_filterpolicy_t : public FilterPolicy {
void* state_;
void (*destructor_)(void*);
const char* (*name_)(void*);
char* (*create_)(
void*,
const char* const* key_array, const size_t* key_length_array,
int num_keys,
size_t* filter_length);
unsigned char (*key_match_)(
void*,
const char* key, size_t length,
const char* filter, size_t filter_length);
void (*delete_filter_)(
void*,
const char* filter, size_t filter_length);
virtual ~rocksdb_filterpolicy_t() {
(*destructor_)(state_);
}
virtual const char* Name() const {
return (*name_)(state_);
}
virtual void CreateFilter(const Slice* keys, int n, std::string* dst) const {
std::vector<const char*> key_pointers(n);
std::vector<size_t> key_sizes(n);
for (int i = 0; i < n; i++) {
key_pointers[i] = keys[i].data();
key_sizes[i] = keys[i].size();
}
size_t len;
char* filter = (*create_)(state_, &key_pointers[0], &key_sizes[0], n, &len);
dst->append(filter, len);
if (delete_filter_ != nullptr) {
(*delete_filter_)(state_, filter, len);
} else {
free(filter);
}
}
virtual bool KeyMayMatch(const Slice& key, const Slice& filter) const {
return (*key_match_)(state_, key.data(), key.size(),
filter.data(), filter.size());
}
};
struct rocksdb_mergeoperator_t : public MergeOperator {
void* state_;
void (*destructor_)(void*);
const char* (*name_)(void*);
char* (*full_merge_)(
void*,
const char* key, size_t key_length,
const char* existing_value, size_t existing_value_length,
const char* const* operands_list, const size_t* operands_list_length,
int num_operands,
unsigned char* success, size_t* new_value_length);
char* (*partial_merge_)(void*, const char* key, size_t key_length,
const char* const* operands_list,
const size_t* operands_list_length, int num_operands,
unsigned char* success, size_t* new_value_length);
void (*delete_value_)(
void*,
const char* value, size_t value_length);
virtual ~rocksdb_mergeoperator_t() {
(*destructor_)(state_);
}
virtual const char* Name() const {
return (*name_)(state_);
}
virtual bool FullMerge(
const Slice& key,
const Slice* existing_value,
const std::deque<std::string>& operand_list,
std::string* new_value,
Logger* logger) const {
size_t n = operand_list.size();
std::vector<const char*> operand_pointers(n);
std::vector<size_t> operand_sizes(n);
for (size_t i = 0; i < n; i++) {
Slice operand(operand_list[i]);
operand_pointers[i] = operand.data();
operand_sizes[i] = operand.size();
}
const char* existing_value_data = nullptr;
size_t existing_value_len = 0;
if (existing_value != nullptr) {
existing_value_data = existing_value->data();
existing_value_len = existing_value->size();
}
unsigned char success;
size_t new_value_len;
char* tmp_new_value = (*full_merge_)(
state_,
key.data(), key.size(),
existing_value_data, existing_value_len,
&operand_pointers[0], &operand_sizes[0], n,
&success, &new_value_len);
new_value->assign(tmp_new_value, new_value_len);
if (delete_value_ != nullptr) {
(*delete_value_)(state_, tmp_new_value, new_value_len);
} else {
free(tmp_new_value);
}
return success;
}
virtual bool PartialMergeMulti(const Slice& key,
const std::deque<Slice>& operand_list,
std::string* new_value, Logger* logger) const {
size_t operand_count = operand_list.size();
std::vector<const char*> operand_pointers(operand_count);
std::vector<size_t> operand_sizes(operand_count);
for (size_t i = 0; i < operand_count; ++i) {
Slice operand(operand_list[i]);
operand_pointers[i] = operand.data();
operand_sizes[i] = operand.size();
}
unsigned char success;
size_t new_value_len;
char* tmp_new_value = (*partial_merge_)(
state_, key.data(), key.size(), &operand_pointers[0], &operand_sizes[0],
operand_count, &success, &new_value_len);
new_value->assign(tmp_new_value, new_value_len);
if (delete_value_ != nullptr) {
(*delete_value_)(state_, tmp_new_value, new_value_len);
} else {
free(tmp_new_value);
}
return success;
}
};
struct rocksdb_env_t {
Env* rep;
bool is_default;
};
struct rocksdb_slicetransform_t : public SliceTransform {
void* state_;
void (*destructor_)(void*);
const char* (*name_)(void*);
char* (*transform_)(
void*,
const char* key, size_t length,
size_t* dst_length);
unsigned char (*in_domain_)(
void*,
const char* key, size_t length);
unsigned char (*in_range_)(
void*,
const char* key, size_t length);
virtual ~rocksdb_slicetransform_t() {
(*destructor_)(state_);
}
virtual const char* Name() const {
return (*name_)(state_);
}
virtual Slice Transform(const Slice& src) const {
size_t len;
char* dst = (*transform_)(state_, src.data(), src.size(), &len);
return Slice(dst, len);
}
virtual bool InDomain(const Slice& src) const {
return (*in_domain_)(state_, src.data(), src.size());
}
virtual bool InRange(const Slice& src) const {
return (*in_range_)(state_, src.data(), src.size());
}
};
struct rocksdb_universal_compaction_options_t {
rocksdb::CompactionOptionsUniversal *rep;
};
static bool SaveError(char** errptr, const Status& s) {
assert(errptr != nullptr);
if (s.ok()) {
return false;
} else if (*errptr == nullptr) {
*errptr = strdup(s.ToString().c_str());
} else {
// TODO(sanjay): Merge with existing error?
free(*errptr);
*errptr = strdup(s.ToString().c_str());
}
return true;
}
static char* CopyString(const std::string& str) {
char* result = reinterpret_cast<char*>(malloc(sizeof(char) * str.size()));
memcpy(result, str.data(), sizeof(char) * str.size());
return result;
}
rocksdb_t* rocksdb_open(
const rocksdb_options_t* options,
const char* name,
char** errptr) {
DB* db;
if (SaveError(errptr, DB::Open(options->rep, std::string(name), &db))) {
return nullptr;
}
rocksdb_t* result = new rocksdb_t;
result->rep = db;
return result;
}
rocksdb_t* rocksdb_open_for_read_only(
const rocksdb_options_t* options,
const char* name,
unsigned char error_if_log_file_exist,
char** errptr) {
DB* db;
if (SaveError(errptr, DB::OpenForReadOnly(options->rep, std::string(name), &db, error_if_log_file_exist))) {
return nullptr;
}
rocksdb_t* result = new rocksdb_t;
result->rep = db;
return result;
}
void rocksdb_close(rocksdb_t* db) {
delete db->rep;
delete db;
}
void rocksdb_put(
rocksdb_t* db,
const rocksdb_writeoptions_t* options,
const char* key, size_t keylen,
const char* val, size_t vallen,
char** errptr) {
SaveError(errptr,
db->rep->Put(options->rep, Slice(key, keylen), Slice(val, vallen)));
}
void rocksdb_delete(
rocksdb_t* db,
const rocksdb_writeoptions_t* options,
const char* key, size_t keylen,
char** errptr) {
SaveError(errptr, db->rep->Delete(options->rep, Slice(key, keylen)));
}
void rocksdb_merge(
rocksdb_t* db,
const rocksdb_writeoptions_t* options,
const char* key, size_t keylen,
const char* val, size_t vallen,
char** errptr) {
SaveError(errptr,
db->rep->Merge(options->rep, Slice(key, keylen), Slice(val, vallen)));
}
void rocksdb_write(
rocksdb_t* db,
const rocksdb_writeoptions_t* options,
rocksdb_writebatch_t* batch,
char** errptr) {
SaveError(errptr, db->rep->Write(options->rep, &batch->rep));
}
char* rocksdb_get(
rocksdb_t* db,
const rocksdb_readoptions_t* options,
const char* key, size_t keylen,
size_t* vallen,
char** errptr) {
char* result = nullptr;
std::string tmp;
Status s = db->rep->Get(options->rep, Slice(key, keylen), &tmp);
if (s.ok()) {
*vallen = tmp.size();
result = CopyString(tmp);
} else {
*vallen = 0;
if (!s.IsNotFound()) {
SaveError(errptr, s);
}
}
return result;
}
rocksdb_iterator_t* rocksdb_create_iterator(
rocksdb_t* db,
const rocksdb_readoptions_t* options) {
rocksdb_iterator_t* result = new rocksdb_iterator_t;
result->rep = db->rep->NewIterator(options->rep);
return result;
}
const rocksdb_snapshot_t* rocksdb_create_snapshot(
rocksdb_t* db) {
rocksdb_snapshot_t* result = new rocksdb_snapshot_t;
result->rep = db->rep->GetSnapshot();
return result;
}
void rocksdb_release_snapshot(
rocksdb_t* db,
const rocksdb_snapshot_t* snapshot) {
db->rep->ReleaseSnapshot(snapshot->rep);
delete snapshot;
}
char* rocksdb_property_value(
rocksdb_t* db,
const char* propname) {
std::string tmp;
if (db->rep->GetProperty(Slice(propname), &tmp)) {
// We use strdup() since we expect human readable output.
return strdup(tmp.c_str());
} else {
return nullptr;
}
}
void rocksdb_approximate_sizes(
rocksdb_t* db,
int num_ranges,
const char* const* range_start_key, const size_t* range_start_key_len,
const char* const* range_limit_key, const size_t* range_limit_key_len,
uint64_t* sizes) {
Range* ranges = new Range[num_ranges];
for (int i = 0; i < num_ranges; i++) {
ranges[i].start = Slice(range_start_key[i], range_start_key_len[i]);
ranges[i].limit = Slice(range_limit_key[i], range_limit_key_len[i]);
}
db->rep->GetApproximateSizes(ranges, num_ranges, sizes);
delete[] ranges;
}
void rocksdb_delete_file(
rocksdb_t* db,
const char* name) {
db->rep->DeleteFile(name);
}
const rocksdb_livefiles_t* rocksdb_livefiles(
rocksdb_t* db) {
rocksdb_livefiles_t* result = new rocksdb_livefiles_t;
db->rep->GetLiveFilesMetaData(&result->rep);
return result;
}
void rocksdb_compact_range(
rocksdb_t* db,
const char* start_key, size_t start_key_len,
const char* limit_key, size_t limit_key_len) {
Slice a, b;
db->rep->CompactRange(
// Pass nullptr Slice if corresponding "const char*" is nullptr
(start_key ? (a = Slice(start_key, start_key_len), &a) : nullptr),
(limit_key ? (b = Slice(limit_key, limit_key_len), &b) : nullptr));
}
void rocksdb_flush(
rocksdb_t* db,
const rocksdb_flushoptions_t* options,
char** errptr) {
SaveError(errptr, db->rep->Flush(options->rep));
}
void rocksdb_disable_file_deletions(
rocksdb_t* db,
char** errptr) {
SaveError(errptr, db->rep->DisableFileDeletions());
}
void rocksdb_enable_file_deletions(
rocksdb_t* db,
unsigned char force,
char** errptr) {
SaveError(errptr, db->rep->EnableFileDeletions(force));
}
void rocksdb_destroy_db(
const rocksdb_options_t* options,
const char* name,
char** errptr) {
SaveError(errptr, DestroyDB(name, options->rep));
}
void rocksdb_repair_db(
const rocksdb_options_t* options,
const char* name,
char** errptr) {
SaveError(errptr, RepairDB(name, options->rep));
}
void rocksdb_iter_destroy(rocksdb_iterator_t* iter) {
delete iter->rep;
delete iter;
}
unsigned char rocksdb_iter_valid(const rocksdb_iterator_t* iter) {
return iter->rep->Valid();
}
void rocksdb_iter_seek_to_first(rocksdb_iterator_t* iter) {
iter->rep->SeekToFirst();
}
void rocksdb_iter_seek_to_last(rocksdb_iterator_t* iter) {
iter->rep->SeekToLast();
}
void rocksdb_iter_seek(rocksdb_iterator_t* iter, const char* k, size_t klen) {
iter->rep->Seek(Slice(k, klen));
}
void rocksdb_iter_next(rocksdb_iterator_t* iter) {
iter->rep->Next();
}
void rocksdb_iter_prev(rocksdb_iterator_t* iter) {
iter->rep->Prev();
}
const char* rocksdb_iter_key(const rocksdb_iterator_t* iter, size_t* klen) {
Slice s = iter->rep->key();
*klen = s.size();
return s.data();
}
const char* rocksdb_iter_value(const rocksdb_iterator_t* iter, size_t* vlen) {
Slice s = iter->rep->value();
*vlen = s.size();
return s.data();
}
void rocksdb_iter_get_error(const rocksdb_iterator_t* iter, char** errptr) {
SaveError(errptr, iter->rep->status());
}
rocksdb_writebatch_t* rocksdb_writebatch_create() {
return new rocksdb_writebatch_t;
}
void rocksdb_writebatch_destroy(rocksdb_writebatch_t* b) {
delete b;
}
void rocksdb_writebatch_clear(rocksdb_writebatch_t* b) {
b->rep.Clear();
}
int rocksdb_writebatch_count(rocksdb_writebatch_t* b) {
return b->rep.Count();
}
void rocksdb_writebatch_put(
rocksdb_writebatch_t* b,
const char* key, size_t klen,
const char* val, size_t vlen) {
b->rep.Put(Slice(key, klen), Slice(val, vlen));
}
void rocksdb_writebatch_merge(
rocksdb_writebatch_t* b,
const char* key, size_t klen,
const char* val, size_t vlen) {
b->rep.Merge(Slice(key, klen), Slice(val, vlen));
}
void rocksdb_writebatch_delete(
rocksdb_writebatch_t* b,
const char* key, size_t klen) {
b->rep.Delete(Slice(key, klen));
}
void rocksdb_writebatch_iterate(
rocksdb_writebatch_t* b,
void* state,
void (*put)(void*, const char* k, size_t klen, const char* v, size_t vlen),
void (*deleted)(void*, const char* k, size_t klen)) {
class H : public WriteBatch::Handler {
public:
void* state_;
void (*put_)(void*, const char* k, size_t klen, const char* v, size_t vlen);
void (*deleted_)(void*, const char* k, size_t klen);
virtual void Put(const Slice& key, const Slice& value) {
(*put_)(state_, key.data(), key.size(), value.data(), value.size());
}
virtual void Delete(const Slice& key) {
(*deleted_)(state_, key.data(), key.size());
}
};
H handler;
handler.state_ = state;
handler.put_ = put;
handler.deleted_ = deleted;
b->rep.Iterate(&handler);
}
const char* rocksdb_writebatch_data(rocksdb_writebatch_t* b, size_t* size) {
*size = b->rep.GetDataSize();
return b->rep.Data().c_str();
}
rocksdb_options_t* rocksdb_options_create() {
return new rocksdb_options_t;
}
void rocksdb_options_destroy(rocksdb_options_t* options) {
delete options;
}
void rocksdb_options_set_comparator(
rocksdb_options_t* opt,
rocksdb_comparator_t* cmp) {
opt->rep.comparator = cmp;
}
void rocksdb_options_set_merge_operator(
rocksdb_options_t* opt,
rocksdb_mergeoperator_t* merge_operator) {
opt->rep.merge_operator = std::shared_ptr<MergeOperator>(merge_operator);
}
void rocksdb_options_set_filter_policy(
rocksdb_options_t* opt,
rocksdb_filterpolicy_t* policy) {
opt->rep.filter_policy = policy;
}
void rocksdb_options_set_create_if_missing(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.create_if_missing = v;
}
void rocksdb_options_set_error_if_exists(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.error_if_exists = v;
}
void rocksdb_options_set_paranoid_checks(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.paranoid_checks = v;
}
void rocksdb_options_set_env(rocksdb_options_t* opt, rocksdb_env_t* env) {
opt->rep.env = (env ? env->rep : nullptr);
}
void rocksdb_options_set_info_log(rocksdb_options_t* opt, rocksdb_logger_t* l) {
if (l) {
opt->rep.info_log = l->rep;
}
}
void rocksdb_options_set_info_log_level(
rocksdb_options_t* opt, int v) {
opt->rep.info_log_level = static_cast<InfoLogLevel>(v);
}
void rocksdb_options_set_write_buffer_size(rocksdb_options_t* opt, size_t s) {
opt->rep.write_buffer_size = s;
}
void rocksdb_options_set_max_open_files(rocksdb_options_t* opt, int n) {
opt->rep.max_open_files = n;
}
void rocksdb_options_set_cache(rocksdb_options_t* opt, rocksdb_cache_t* c) {
if (c) {
opt->rep.block_cache = c->rep;
}
}
void rocksdb_options_set_cache_compressed(rocksdb_options_t* opt, rocksdb_cache_t* c) {
if (c) {
opt->rep.block_cache_compressed = c->rep;
}
}
void rocksdb_options_set_block_size(rocksdb_options_t* opt, size_t s) {
opt->rep.block_size = s;
}
void rocksdb_options_set_block_restart_interval(rocksdb_options_t* opt, int n) {
opt->rep.block_restart_interval = n;
}
void rocksdb_options_set_target_file_size_base(
rocksdb_options_t* opt, uint64_t n) {
opt->rep.target_file_size_base = n;
}
void rocksdb_options_set_target_file_size_multiplier(
rocksdb_options_t* opt, int n) {
opt->rep.target_file_size_multiplier = n;
}
void rocksdb_options_set_max_bytes_for_level_base(
rocksdb_options_t* opt, uint64_t n) {
opt->rep.max_bytes_for_level_base = n;
}
void rocksdb_options_set_max_bytes_for_level_multiplier(
rocksdb_options_t* opt, int n) {
opt->rep.max_bytes_for_level_multiplier = n;
}
void rocksdb_options_set_expanded_compaction_factor(
rocksdb_options_t* opt, int n) {
opt->rep.expanded_compaction_factor = n;
}
void rocksdb_options_set_max_grandparent_overlap_factor(
rocksdb_options_t* opt, int n) {
opt->rep.max_grandparent_overlap_factor = n;
}
void rocksdb_options_set_max_bytes_for_level_multiplier_additional(
rocksdb_options_t* opt, int* level_values, size_t num_levels) {
opt->rep.max_bytes_for_level_multiplier_additional.resize(num_levels);
for (size_t i = 0; i < num_levels; ++i) {
opt->rep.max_bytes_for_level_multiplier_additional[i] = level_values[i];
}
}
void rocksdb_options_enable_statistics(rocksdb_options_t* opt) {
opt->rep.statistics = rocksdb::CreateDBStatistics();
}
void rocksdb_options_set_num_levels(rocksdb_options_t* opt, int n) {
opt->rep.num_levels = n;
}
void rocksdb_options_set_level0_file_num_compaction_trigger(
rocksdb_options_t* opt, int n) {
opt->rep.level0_file_num_compaction_trigger = n;
}
void rocksdb_options_set_level0_slowdown_writes_trigger(
rocksdb_options_t* opt, int n) {
opt->rep.level0_slowdown_writes_trigger = n;
}
void rocksdb_options_set_level0_stop_writes_trigger(
rocksdb_options_t* opt, int n) {
opt->rep.level0_stop_writes_trigger = n;
}
void rocksdb_options_set_max_mem_compaction_level(
rocksdb_options_t* opt, int n) {
opt->rep.max_mem_compaction_level = n;
}
void rocksdb_options_set_compression(rocksdb_options_t* opt, int t) {
opt->rep.compression = static_cast<CompressionType>(t);
}
void rocksdb_options_set_compression_per_level(rocksdb_options_t* opt,
int* level_values,
size_t num_levels) {
opt->rep.compression_per_level.resize(num_levels);
for (size_t i = 0; i < num_levels; ++i) {
opt->rep.compression_per_level[i] =
static_cast<CompressionType>(level_values[i]);
}
}
void rocksdb_options_set_compression_options(
rocksdb_options_t* opt, int w_bits, int level, int strategy) {
opt->rep.compression_opts.window_bits = w_bits;
opt->rep.compression_opts.level = level;
opt->rep.compression_opts.strategy = strategy;
}
void rocksdb_options_set_prefix_extractor(
rocksdb_options_t* opt, rocksdb_slicetransform_t* prefix_extractor) {
opt->rep.prefix_extractor.reset(prefix_extractor);
}
void rocksdb_options_set_whole_key_filtering(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.whole_key_filtering = v;
}
void rocksdb_options_set_disable_data_sync(
rocksdb_options_t* opt, int disable_data_sync) {
opt->rep.disableDataSync = disable_data_sync;
}
void rocksdb_options_set_use_fsync(
rocksdb_options_t* opt, int use_fsync) {
opt->rep.use_fsync = use_fsync;
}
void rocksdb_options_set_db_stats_log_interval(
rocksdb_options_t* opt, int db_stats_log_interval) {
opt->rep.db_stats_log_interval = db_stats_log_interval;
}
void rocksdb_options_set_db_log_dir(
rocksdb_options_t* opt, const char* db_log_dir) {
opt->rep.db_log_dir = db_log_dir;
}
void rocksdb_options_set_wal_dir(
rocksdb_options_t* opt, const char* v) {
opt->rep.wal_dir = v;
}
void rocksdb_options_set_WAL_ttl_seconds(rocksdb_options_t* opt, uint64_t ttl) {
opt->rep.WAL_ttl_seconds = ttl;
}
void rocksdb_options_set_WAL_size_limit_MB(
rocksdb_options_t* opt, uint64_t limit) {
opt->rep.WAL_size_limit_MB = limit;
}
void rocksdb_options_set_manifest_preallocation_size(
rocksdb_options_t* opt, size_t v) {
opt->rep.manifest_preallocation_size = v;
}
void rocksdb_options_set_purge_redundant_kvs_while_flush(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.purge_redundant_kvs_while_flush = v;
}
void rocksdb_options_set_allow_os_buffer(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.allow_os_buffer = v;
}
void rocksdb_options_set_allow_mmap_reads(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.allow_mmap_reads = v;
}
void rocksdb_options_set_allow_mmap_writes(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.allow_mmap_writes = v;
}
void rocksdb_options_set_is_fd_close_on_exec(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.is_fd_close_on_exec = v;
}
void rocksdb_options_set_skip_log_error_on_recovery(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.skip_log_error_on_recovery = v;
}
void rocksdb_options_set_stats_dump_period_sec(
rocksdb_options_t* opt, unsigned int v) {
opt->rep.stats_dump_period_sec = v;
}
void rocksdb_options_set_block_size_deviation(
rocksdb_options_t* opt, int v) {
opt->rep.block_size_deviation = v;
}
void rocksdb_options_set_advise_random_on_open(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.advise_random_on_open = v;
}
void rocksdb_options_set_access_hint_on_compaction_start(
rocksdb_options_t* opt, int v) {
switch(v) {
case 0:
opt->rep.access_hint_on_compaction_start = rocksdb::Options::NONE;
break;
case 1:
opt->rep.access_hint_on_compaction_start = rocksdb::Options::NORMAL;
break;
case 2:
opt->rep.access_hint_on_compaction_start = rocksdb::Options::SEQUENTIAL;
break;
case 3:
opt->rep.access_hint_on_compaction_start = rocksdb::Options::WILLNEED;
break;
}
}
void rocksdb_options_set_use_adaptive_mutex(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.use_adaptive_mutex = v;
}
void rocksdb_options_set_bytes_per_sync(
rocksdb_options_t* opt, uint64_t v) {
opt->rep.bytes_per_sync = v;
}
void rocksdb_options_set_verify_checksums_in_compaction(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.verify_checksums_in_compaction = v;
}
void rocksdb_options_set_filter_deletes(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.filter_deletes = v;
}
void rocksdb_options_set_max_sequential_skip_in_iterations(
rocksdb_options_t* opt, uint64_t v) {
opt->rep.max_sequential_skip_in_iterations = v;
}
void rocksdb_options_set_max_write_buffer_number(rocksdb_options_t* opt, int n) {
opt->rep.max_write_buffer_number = n;
}
void rocksdb_options_set_min_write_buffer_number_to_merge(rocksdb_options_t* opt, int n) {
opt->rep.min_write_buffer_number_to_merge = n;
}
void rocksdb_options_set_max_background_compactions(rocksdb_options_t* opt, int n) {
opt->rep.max_background_compactions = n;
}
void rocksdb_options_set_max_background_flushes(rocksdb_options_t* opt, int n) {
opt->rep.max_background_flushes = n;
}
void rocksdb_options_set_max_log_file_size(rocksdb_options_t* opt, size_t v) {
opt->rep.max_log_file_size = v;
}
void rocksdb_options_set_log_file_time_to_roll(rocksdb_options_t* opt, size_t v) {
opt->rep.log_file_time_to_roll = v;
}
void rocksdb_options_set_keep_log_file_num(rocksdb_options_t* opt, size_t v) {
opt->rep.keep_log_file_num = v;
}
void rocksdb_options_set_soft_rate_limit(rocksdb_options_t* opt, double v) {
opt->rep.soft_rate_limit = v;
}
void rocksdb_options_set_hard_rate_limit(rocksdb_options_t* opt, double v) {
opt->rep.hard_rate_limit = v;
}
void rocksdb_options_set_rate_limit_delay_max_milliseconds(
rocksdb_options_t* opt, unsigned int v) {
opt->rep.rate_limit_delay_max_milliseconds = v;
}
void rocksdb_options_set_max_manifest_file_size(
rocksdb_options_t* opt, size_t v) {
opt->rep.max_manifest_file_size = v;
}
void rocksdb_options_set_no_block_cache(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.no_block_cache = v;
}
void rocksdb_options_set_table_cache_numshardbits(
rocksdb_options_t* opt, int v) {
opt->rep.table_cache_numshardbits = v;
}
void rocksdb_options_set_table_cache_remove_scan_count_limit(
rocksdb_options_t* opt, int v) {
opt->rep.table_cache_remove_scan_count_limit = v;
}
void rocksdb_options_set_arena_block_size(
rocksdb_options_t* opt, size_t v) {
opt->rep.arena_block_size = v;
}
void rocksdb_options_set_disable_auto_compactions(rocksdb_options_t* opt, int disable) {
opt->rep.disable_auto_compactions = disable;
}
void rocksdb_options_set_disable_seek_compaction(rocksdb_options_t* opt, int disable) {
opt->rep.disable_seek_compaction = disable;
}
void rocksdb_options_set_delete_obsolete_files_period_micros(
rocksdb_options_t* opt, uint64_t v) {
opt->rep.delete_obsolete_files_period_micros = v;
}
void rocksdb_options_set_source_compaction_factor(
rocksdb_options_t* opt, int n) {
opt->rep.expanded_compaction_factor = n;
}
void rocksdb_options_prepare_for_bulk_load(rocksdb_options_t* opt) {
opt->rep.PrepareForBulkLoad();
}
void rocksdb_options_set_memtable_vector_rep(rocksdb_options_t *opt) {
static rocksdb::VectorRepFactory* factory = 0;
if (!factory) {
factory = new rocksdb::VectorRepFactory;
}
opt->rep.memtable_factory.reset(factory);
}
void rocksdb_options_set_memtable_prefix_bloom_bits(
rocksdb_options_t* opt, uint32_t v) {
opt->rep.memtable_prefix_bloom_bits = v;
}
void rocksdb_options_set_memtable_prefix_bloom_probes(
rocksdb_options_t* opt, uint32_t v) {
opt->rep.memtable_prefix_bloom_probes = v;
}
void rocksdb_options_set_hash_skip_list_rep(
rocksdb_options_t *opt, size_t bucket_count,
int32_t skiplist_height, int32_t skiplist_branching_factor) {
static rocksdb::MemTableRepFactory* factory = 0;
if (!factory) {
factory = rocksdb::NewHashSkipListRepFactory(
bucket_count, skiplist_height, skiplist_branching_factor);
}
opt->rep.memtable_factory.reset(factory);
}
void rocksdb_options_set_hash_link_list_rep(
rocksdb_options_t *opt, size_t bucket_count) {
static rocksdb::MemTableRepFactory* factory = 0;
if (!factory) {
factory = rocksdb::NewHashLinkListRepFactory(bucket_count);
}
opt->rep.memtable_factory.reset(factory);
}
void rocksdb_options_set_plain_table_factory(
rocksdb_options_t *opt, uint32_t user_key_len, int bloom_bits_per_key,
double hash_table_ratio, size_t index_sparseness) {
static rocksdb::TableFactory* factory = 0;
if (!factory) {
factory = rocksdb::NewPlainTableFactory(
user_key_len, bloom_bits_per_key,
hash_table_ratio, index_sparseness);
}
opt->rep.table_factory.reset(factory);
}
void rocksdb_options_set_max_successive_merges(
rocksdb_options_t* opt, size_t v) {
opt->rep.max_successive_merges = v;
}
void rocksdb_options_set_min_partial_merge_operands(
rocksdb_options_t* opt, uint32_t v) {
opt->rep.min_partial_merge_operands = v;
}
void rocksdb_options_set_bloom_locality(
rocksdb_options_t* opt, uint32_t v) {
opt->rep.bloom_locality = v;
}
void rocksdb_options_set_allow_thread_local(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.allow_thread_local = v;
}
void rocksdb_options_set_inplace_update_support(
rocksdb_options_t* opt, unsigned char v) {
opt->rep.inplace_update_support = v;
}
void rocksdb_options_set_inplace_update_num_locks(
rocksdb_options_t* opt, size_t v) {
opt->rep.inplace_update_num_locks = v;
}
void rocksdb_options_set_compaction_style(rocksdb_options_t *opt, int style) {
opt->rep.compaction_style = static_cast<rocksdb::CompactionStyle>(style);
}
void rocksdb_options_set_universal_compaction_options(rocksdb_options_t *opt, rocksdb_universal_compaction_options_t *uco) {
opt->rep.compaction_options_universal = *(uco->rep);
}
/*
TODO:
DB::OpenForReadOnly
DB::MultiGet
DB::KeyMayExist
DB::GetOptions
DB::GetSortedWalFiles
DB::GetLatestSequenceNumber
DB::GetUpdatesSince
DB::GetDbIdentity
DB::RunManualCompaction
custom cache
compaction_filter
table_properties_collectors
*/
rocksdb_comparator_t* rocksdb_comparator_create(
void* state,
void (*destructor)(void*),
int (*compare)(
void*,
const char* a, size_t alen,
const char* b, size_t blen),
const char* (*name)(void*)) {
rocksdb_comparator_t* result = new rocksdb_comparator_t;
result->state_ = state;
result->destructor_ = destructor;
result->compare_ = compare;
result->name_ = name;
return result;
}
void rocksdb_comparator_destroy(rocksdb_comparator_t* cmp) {
delete cmp;
}
rocksdb_filterpolicy_t* rocksdb_filterpolicy_create(
void* state,
void (*destructor)(void*),
char* (*create_filter)(
void*,
const char* const* key_array, const size_t* key_length_array,
int num_keys,
size_t* filter_length),
unsigned char (*key_may_match)(
void*,
const char* key, size_t length,
const char* filter, size_t filter_length),
void (*delete_filter)(
void*,
const char* filter, size_t filter_length),
const char* (*name)(void*)) {
rocksdb_filterpolicy_t* result = new rocksdb_filterpolicy_t;
result->state_ = state;
result->destructor_ = destructor;
result->create_ = create_filter;
result->key_match_ = key_may_match;
result->delete_filter_ = delete_filter;
result->name_ = name;
return result;
}
void rocksdb_filterpolicy_destroy(rocksdb_filterpolicy_t* filter) {
delete filter;
}
rocksdb_filterpolicy_t* rocksdb_filterpolicy_create_bloom(int bits_per_key) {
// Make a rocksdb_filterpolicy_t, but override all of its methods so
// they delegate to a NewBloomFilterPolicy() instead of user
// supplied C functions.
struct Wrapper : public rocksdb_filterpolicy_t {
const FilterPolicy* rep_;
~Wrapper() { delete rep_; }
const char* Name() const { return rep_->Name(); }
void CreateFilter(const Slice* keys, int n, std::string* dst) const {
return rep_->CreateFilter(keys, n, dst);
}
bool KeyMayMatch(const Slice& key, const Slice& filter) const {
return rep_->KeyMayMatch(key, filter);
}
static void DoNothing(void*) { }
};
Wrapper* wrapper = new Wrapper;
wrapper->rep_ = NewBloomFilterPolicy(bits_per_key);
wrapper->state_ = nullptr;
wrapper->delete_filter_ = nullptr;
wrapper->destructor_ = &Wrapper::DoNothing;
return wrapper;
}
rocksdb_mergeoperator_t* rocksdb_mergeoperator_create(
void* state, void (*destructor)(void*),
char* (*full_merge)(void*, const char* key, size_t key_length,
const char* existing_value,
size_t existing_value_length,
const char* const* operands_list,
const size_t* operands_list_length, int num_operands,
unsigned char* success, size_t* new_value_length),
char* (*partial_merge)(void*, const char* key, size_t key_length,
const char* const* operands_list,
const size_t* operands_list_length, int num_operands,
unsigned char* success, size_t* new_value_length),
void (*delete_value)(void*, const char* value, size_t value_length),
const char* (*name)(void*)) {
rocksdb_mergeoperator_t* result = new rocksdb_mergeoperator_t;
result->state_ = state;
result->destructor_ = destructor;
result->full_merge_ = full_merge;
result->partial_merge_ = partial_merge;
result->delete_value_ = delete_value;
result->name_ = name;
return result;
}
void rocksdb_mergeoperator_destroy(rocksdb_mergeoperator_t* merge_operator) {
delete merge_operator;
}
rocksdb_readoptions_t* rocksdb_readoptions_create() {
return new rocksdb_readoptions_t;
}
void rocksdb_readoptions_destroy(rocksdb_readoptions_t* opt) {
delete opt;
}
void rocksdb_readoptions_set_verify_checksums(
rocksdb_readoptions_t* opt,
unsigned char v) {
opt->rep.verify_checksums = v;
}
void rocksdb_readoptions_set_fill_cache(
rocksdb_readoptions_t* opt, unsigned char v) {
opt->rep.fill_cache = v;
}
void rocksdb_readoptions_set_snapshot(
rocksdb_readoptions_t* opt,
const rocksdb_snapshot_t* snap) {
opt->rep.snapshot = (snap ? snap->rep : nullptr);
}
void rocksdb_readoptions_set_read_tier(
rocksdb_readoptions_t* opt, int v) {
opt->rep.read_tier = static_cast<rocksdb::ReadTier>(v);
}
void rocksdb_readoptions_set_tailing(
rocksdb_readoptions_t* opt, unsigned char v) {
opt->rep.tailing = v;
}
rocksdb_writeoptions_t* rocksdb_writeoptions_create() {
return new rocksdb_writeoptions_t;
}
void rocksdb_writeoptions_destroy(rocksdb_writeoptions_t* opt) {
delete opt;
}
void rocksdb_writeoptions_set_sync(
rocksdb_writeoptions_t* opt, unsigned char v) {
opt->rep.sync = v;
}
void rocksdb_writeoptions_disable_WAL(rocksdb_writeoptions_t* opt, int disable) {
opt->rep.disableWAL = disable;
}
rocksdb_flushoptions_t* rocksdb_flushoptions_create() {
return new rocksdb_flushoptions_t;
}
void rocksdb_flushoptions_destroy(rocksdb_flushoptions_t* opt) {
delete opt;
}
void rocksdb_flushoptions_set_wait(
rocksdb_flushoptions_t* opt, unsigned char v) {
opt->rep.wait = v;
}
rocksdb_cache_t* rocksdb_cache_create_lru(size_t capacity) {
rocksdb_cache_t* c = new rocksdb_cache_t;
c->rep = NewLRUCache(capacity);
return c;
}
void rocksdb_cache_destroy(rocksdb_cache_t* cache) {
delete cache;
}
rocksdb_env_t* rocksdb_create_default_env() {
rocksdb_env_t* result = new rocksdb_env_t;
result->rep = Env::Default();
result->is_default = true;
return result;
}
void rocksdb_env_set_background_threads(rocksdb_env_t* env, int n) {
env->rep->SetBackgroundThreads(n);
}
void rocksdb_env_set_high_priority_background_threads(rocksdb_env_t* env, int n) {
env->rep->SetBackgroundThreads(n, Env::HIGH);
}
void rocksdb_env_destroy(rocksdb_env_t* env) {
if (!env->is_default) delete env->rep;
delete env;
}
rocksdb_slicetransform_t* rocksdb_slicetransform_create(
void* state,
void (*destructor)(void*),
char* (*transform)(
void*,
const char* key, size_t length,
size_t* dst_length),
unsigned char (*in_domain)(
void*,
const char* key, size_t length),
unsigned char (*in_range)(
void*,
const char* key, size_t length),
const char* (*name)(void*)) {
rocksdb_slicetransform_t* result = new rocksdb_slicetransform_t;
result->state_ = state;
result->destructor_ = destructor;
result->transform_ = transform;
result->in_domain_ = in_domain;
result->in_range_ = in_range;
result->name_ = name;
return result;
}
void rocksdb_slicetransform_destroy(rocksdb_slicetransform_t* st) {
delete st;
}
rocksdb_slicetransform_t* rocksdb_slicetransform_create_fixed_prefix(size_t prefixLen) {
struct Wrapper : public rocksdb_slicetransform_t {
const SliceTransform* rep_;
~Wrapper() { delete rep_; }
const char* Name() const { return rep_->Name(); }
Slice Transform(const Slice& src) const {
return rep_->Transform(src);
}
bool InDomain(const Slice& src) const {
return rep_->InDomain(src);
}
bool InRange(const Slice& src) const {
return rep_->InRange(src);
}
static void DoNothing(void*) { }
};
Wrapper* wrapper = new Wrapper;
wrapper->rep_ = rocksdb::NewFixedPrefixTransform(prefixLen);
wrapper->state_ = nullptr;
wrapper->destructor_ = &Wrapper::DoNothing;
return wrapper;
}
rocksdb_universal_compaction_options_t* rocksdb_universal_compaction_options_create() {
rocksdb_universal_compaction_options_t* result = new rocksdb_universal_compaction_options_t;
result->rep = new rocksdb::CompactionOptionsUniversal;
return result;
}
void rocksdb_universal_compaction_options_set_size_ratio(
rocksdb_universal_compaction_options_t* uco, int ratio) {
uco->rep->size_ratio = ratio;
}
void rocksdb_universal_compaction_options_set_min_merge_width(
rocksdb_universal_compaction_options_t* uco, int w) {
uco->rep->min_merge_width = w;
}
void rocksdb_universal_compaction_options_set_max_merge_width(
rocksdb_universal_compaction_options_t* uco, int w) {
uco->rep->max_merge_width = w;
}
void rocksdb_universal_compaction_options_set_max_size_amplification_percent(
rocksdb_universal_compaction_options_t* uco, int p) {
uco->rep->max_size_amplification_percent = p;
}
void rocksdb_universal_compaction_options_set_compression_size_percent(
rocksdb_universal_compaction_options_t* uco, int p) {
uco->rep->compression_size_percent = p;
}
void rocksdb_universal_compaction_options_set_stop_style(
rocksdb_universal_compaction_options_t* uco, int style) {
uco->rep->stop_style = static_cast<rocksdb::CompactionStopStyle>(style);
}
void rocksdb_universal_compaction_options_destroy(
rocksdb_universal_compaction_options_t* uco) {
delete uco->rep;
delete uco;
}
void rocksdb_options_set_min_level_to_compress(rocksdb_options_t* opt, int level) {
if (level >= 0) {
assert(level <= opt->rep.num_levels);
opt->rep.compression_per_level.resize(opt->rep.num_levels);
for (int i = 0; i < level; i++) {
opt->rep.compression_per_level[i] = rocksdb::kNoCompression;
}
for (int i = level; i < opt->rep.num_levels; i++) {
opt->rep.compression_per_level[i] = opt->rep.compression;
}
}
}
int rocksdb_livefiles_count(
const rocksdb_livefiles_t* lf) {
return lf->rep.size();
}
const char* rocksdb_livefiles_name(
const rocksdb_livefiles_t* lf,
int index) {
return lf->rep[index].name.c_str();
}
int rocksdb_livefiles_level(
const rocksdb_livefiles_t* lf,
int index) {
return lf->rep[index].level;
}
size_t rocksdb_livefiles_size(
const rocksdb_livefiles_t* lf,
int index) {
return lf->rep[index].size;
}
const char* rocksdb_livefiles_smallestkey(
const rocksdb_livefiles_t* lf,
int index,
size_t* size) {
*size = lf->rep[index].smallestkey.size();
return lf->rep[index].smallestkey.data();
}
const char* rocksdb_livefiles_largestkey(
const rocksdb_livefiles_t* lf,
int index,
size_t* size) {
*size = lf->rep[index].largestkey.size();
return lf->rep[index].largestkey.data();
}
extern void rocksdb_livefiles_destroy(
const rocksdb_livefiles_t* lf) {
delete lf;
}
} // end extern "C"
#endif // ROCKSDB_LITE