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Add C API functions (and tests) for WriteBatchWithIndex

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Summary:
I've added functions to the C API to support WriteBatchWithIndex as requested in #1833.

I've also added unit tests to c_test

I've implemented the WriteBatchWithIndex variation of every function available for regular WriteBatch.  And added additional functions unique to WriteBatchWithIndex.

For now, the following is omitted:
  1. The ability to create WriteBatchWithIndex's custom batch-only iterator as I'm not sure what its purpose is.  It should be possible to add later if anyone wants it.
  2. The ability to create the batch with a fallback comparator, since it appears to be unnecessary.  I believe the column family comparator will be used for this, meaning those using a custom comparator can just use the column family variations.
Closes https://github.com/facebook/rocksdb/pull/1985

Differential Revision: D4760039

Pulled By: siying

fbshipit-source-id: 393227e
main
Warren Falk 7 years ago committed by Facebook Github Bot
parent 88bb6f6bfa
commit 41ccae6d26
3 changed files with 630 additions and 0 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 375
      db/c.cc
  2. 125
      db/c_test.c
  3. 130
      include/rocksdb/c.h

375
db/c.cc
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@ -32,8 +32,10 @@
#include "rocksdb/table.h"
#include "rocksdb/rate_limiter.h"
#include "rocksdb/utilities/backupable_db.h"
#include "rocksdb/utilities/write_batch_with_index.h"
#include "utilities/merge_operators.h"
using rocksdb::BytewiseComparator;
using rocksdb::Cache;
using rocksdb::ColumnFamilyDescriptor;
using rocksdb::ColumnFamilyHandle;
@ -75,6 +77,7 @@ using rocksdb::SstFileWriter;
using rocksdb::Status;
using rocksdb::WritableFile;
using rocksdb::WriteBatch;
using rocksdb::WriteBatchWithIndex;
using rocksdb::WriteOptions;
using rocksdb::LiveFileMetaData;
using rocksdb::BackupEngine;
@ -95,6 +98,7 @@ struct rocksdb_backup_engine_info_t { std::vector<BackupInfo> rep; };
struct rocksdb_restore_options_t { RestoreOptions rep; };
struct rocksdb_iterator_t { Iterator* rep; };
struct rocksdb_writebatch_t { WriteBatch rep; };
struct rocksdb_writebatch_wi_t { WriteBatchWithIndex* rep; };
struct rocksdb_snapshot_t { const Snapshot* rep; };
struct rocksdb_flushoptions_t { FlushOptions rep; };
struct rocksdb_fifo_compaction_options_t { CompactionOptionsFIFO rep; };
@ -1356,6 +1360,377 @@ void rocksdb_writebatch_rollback_to_save_point(rocksdb_writebatch_t* b,
SaveError(errptr, b->rep.RollbackToSavePoint());
}
rocksdb_writebatch_wi_t* rocksdb_writebatch_wi_create(size_t reserved_bytes, unsigned char overwrite_key) {
rocksdb_writebatch_wi_t* b = new rocksdb_writebatch_wi_t;
b->rep = new WriteBatchWithIndex(BytewiseComparator(), reserved_bytes, overwrite_key);
return b;
}
void rocksdb_writebatch_wi_destroy(rocksdb_writebatch_wi_t* b) {
if (b->rep) {
delete b->rep;
}
delete b;
}
void rocksdb_writebatch_wi_clear(rocksdb_writebatch_wi_t* b) {
b->rep->Clear();
}
int rocksdb_writebatch_wi_count(rocksdb_writebatch_wi_t* b) {
return b->rep->GetWriteBatch()->Count();
}
void rocksdb_writebatch_wi_put(
rocksdb_writebatch_wi_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_wi_put_cf(
rocksdb_writebatch_wi_t* b,
rocksdb_column_family_handle_t* column_family,
const char* key, size_t klen,
const char* val, size_t vlen) {
b->rep->Put(column_family->rep, Slice(key, klen), Slice(val, vlen));
}
void rocksdb_writebatch_wi_putv(
rocksdb_writebatch_wi_t* b,
int num_keys, const char* const* keys_list,
const size_t* keys_list_sizes,
int num_values, const char* const* values_list,
const size_t* values_list_sizes) {
std::vector<Slice> key_slices(num_keys);
for (int i = 0; i < num_keys; i++) {
key_slices[i] = Slice(keys_list[i], keys_list_sizes[i]);
}
std::vector<Slice> value_slices(num_values);
for (int i = 0; i < num_values; i++) {
value_slices[i] = Slice(values_list[i], values_list_sizes[i]);
}
b->rep->Put(SliceParts(key_slices.data(), num_keys),
SliceParts(value_slices.data(), num_values));
}
void rocksdb_writebatch_wi_putv_cf(
rocksdb_writebatch_wi_t* b,
rocksdb_column_family_handle_t* column_family,
int num_keys, const char* const* keys_list,
const size_t* keys_list_sizes,
int num_values, const char* const* values_list,
const size_t* values_list_sizes) {
std::vector<Slice> key_slices(num_keys);
for (int i = 0; i < num_keys; i++) {
key_slices[i] = Slice(keys_list[i], keys_list_sizes[i]);
}
std::vector<Slice> value_slices(num_values);
for (int i = 0; i < num_values; i++) {
value_slices[i] = Slice(values_list[i], values_list_sizes[i]);
}
b->rep->Put(column_family->rep, SliceParts(key_slices.data(), num_keys),
SliceParts(value_slices.data(), num_values));
}
void rocksdb_writebatch_wi_merge(
rocksdb_writebatch_wi_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_wi_merge_cf(
rocksdb_writebatch_wi_t* b,
rocksdb_column_family_handle_t* column_family,
const char* key, size_t klen,
const char* val, size_t vlen) {
b->rep->Merge(column_family->rep, Slice(key, klen), Slice(val, vlen));
}
void rocksdb_writebatch_wi_mergev(
rocksdb_writebatch_wi_t* b,
int num_keys, const char* const* keys_list,
const size_t* keys_list_sizes,
int num_values, const char* const* values_list,
const size_t* values_list_sizes) {
std::vector<Slice> key_slices(num_keys);
for (int i = 0; i < num_keys; i++) {
key_slices[i] = Slice(keys_list[i], keys_list_sizes[i]);
}
std::vector<Slice> value_slices(num_values);
for (int i = 0; i < num_values; i++) {
value_slices[i] = Slice(values_list[i], values_list_sizes[i]);
}
b->rep->Merge(SliceParts(key_slices.data(), num_keys),
SliceParts(value_slices.data(), num_values));
}
void rocksdb_writebatch_wi_mergev_cf(
rocksdb_writebatch_wi_t* b,
rocksdb_column_family_handle_t* column_family,
int num_keys, const char* const* keys_list,
const size_t* keys_list_sizes,
int num_values, const char* const* values_list,
const size_t* values_list_sizes) {
std::vector<Slice> key_slices(num_keys);
for (int i = 0; i < num_keys; i++) {
key_slices[i] = Slice(keys_list[i], keys_list_sizes[i]);
}
std::vector<Slice> value_slices(num_values);
for (int i = 0; i < num_values; i++) {
value_slices[i] = Slice(values_list[i], values_list_sizes[i]);
}
b->rep->Merge(column_family->rep, SliceParts(key_slices.data(), num_keys),
SliceParts(value_slices.data(), num_values));
}
void rocksdb_writebatch_wi_delete(
rocksdb_writebatch_wi_t* b,
const char* key, size_t klen) {
b->rep->Delete(Slice(key, klen));
}
void rocksdb_writebatch_wi_delete_cf(
rocksdb_writebatch_wi_t* b,
rocksdb_column_family_handle_t* column_family,
const char* key, size_t klen) {
b->rep->Delete(column_family->rep, Slice(key, klen));
}
void rocksdb_writebatch_wi_deletev(
rocksdb_writebatch_wi_t* b,
int num_keys, const char* const* keys_list,
const size_t* keys_list_sizes) {
std::vector<Slice> key_slices(num_keys);
for (int i = 0; i < num_keys; i++) {
key_slices[i] = Slice(keys_list[i], keys_list_sizes[i]);
}
b->rep->Delete(SliceParts(key_slices.data(), num_keys));
}
void rocksdb_writebatch_wi_deletev_cf(
rocksdb_writebatch_wi_t* b,
rocksdb_column_family_handle_t* column_family,
int num_keys, const char* const* keys_list,
const size_t* keys_list_sizes) {
std::vector<Slice> key_slices(num_keys);
for (int i = 0; i < num_keys; i++) {
key_slices[i] = Slice(keys_list[i], keys_list_sizes[i]);
}
b->rep->Delete(column_family->rep, SliceParts(key_slices.data(), num_keys));
}
void rocksdb_writebatch_wi_delete_range(rocksdb_writebatch_wi_t* b,
const char* start_key,
size_t start_key_len, const char* end_key,
size_t end_key_len) {
b->rep->DeleteRange(Slice(start_key, start_key_len),
Slice(end_key, end_key_len));
}
void rocksdb_writebatch_wi_delete_range_cf(
rocksdb_writebatch_wi_t* b, rocksdb_column_family_handle_t* column_family,
const char* start_key, size_t start_key_len, const char* end_key,
size_t end_key_len) {
b->rep->DeleteRange(column_family->rep, Slice(start_key, start_key_len),
Slice(end_key, end_key_len));
}
void rocksdb_writebatch_wi_delete_rangev(rocksdb_writebatch_wi_t* b, int num_keys,
const char* const* start_keys_list,
const size_t* start_keys_list_sizes,
const char* const* end_keys_list,
const size_t* end_keys_list_sizes) {
std::vector<Slice> start_key_slices(num_keys);
std::vector<Slice> end_key_slices(num_keys);
for (int i = 0; i < num_keys; i++) {
start_key_slices[i] = Slice(start_keys_list[i], start_keys_list_sizes[i]);
end_key_slices[i] = Slice(end_keys_list[i], end_keys_list_sizes[i]);
}
b->rep->DeleteRange(SliceParts(start_key_slices.data(), num_keys),
SliceParts(end_key_slices.data(), num_keys));
}
void rocksdb_writebatch_wi_delete_rangev_cf(
rocksdb_writebatch_wi_t* b, rocksdb_column_family_handle_t* column_family,
int num_keys, const char* const* start_keys_list,
const size_t* start_keys_list_sizes, const char* const* end_keys_list,
const size_t* end_keys_list_sizes) {
std::vector<Slice> start_key_slices(num_keys);
std::vector<Slice> end_key_slices(num_keys);
for (int i = 0; i < num_keys; i++) {
start_key_slices[i] = Slice(start_keys_list[i], start_keys_list_sizes[i]);
end_key_slices[i] = Slice(end_keys_list[i], end_keys_list_sizes[i]);
}
b->rep->DeleteRange(column_family->rep,
SliceParts(start_key_slices.data(), num_keys),
SliceParts(end_key_slices.data(), num_keys));
}
void rocksdb_writebatch_wi_put_log_data(
rocksdb_writebatch_wi_t* b,
const char* blob, size_t len) {
b->rep->PutLogData(Slice(blob, len));
}
void rocksdb_writebatch_wi_iterate(
rocksdb_writebatch_wi_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) override {
(*put_)(state_, key.data(), key.size(), value.data(), value.size());
}
virtual void Delete(const Slice& key) override {
(*deleted_)(state_, key.data(), key.size());
}
};
H handler;
handler.state_ = state;
handler.put_ = put;
handler.deleted_ = deleted;
b->rep->GetWriteBatch()->Iterate(&handler);
}
const char* rocksdb_writebatch_wi_data(rocksdb_writebatch_wi_t* b, size_t* size) {
WriteBatch* wb = b->rep->GetWriteBatch();
*size = wb->GetDataSize();
return wb->Data().c_str();
}
void rocksdb_writebatch_wi_set_save_point(rocksdb_writebatch_wi_t* b) {
b->rep->SetSavePoint();
}
void rocksdb_writebatch_wi_rollback_to_save_point(rocksdb_writebatch_wi_t* b,
char** errptr) {
SaveError(errptr, b->rep->RollbackToSavePoint());
}
rocksdb_iterator_t* rocksdb_writebatch_wi_create_iterator_with_base(
rocksdb_writebatch_wi_t* wbwi,
rocksdb_iterator_t* base_iterator) {
rocksdb_iterator_t* result = new rocksdb_iterator_t;
result->rep = wbwi->rep->NewIteratorWithBase(base_iterator->rep);
delete base_iterator;
return result;
}
rocksdb_iterator_t* rocksdb_writebatch_wi_create_iterator_with_base_cf(
rocksdb_writebatch_wi_t* wbwi,
rocksdb_iterator_t* base_iterator,
rocksdb_column_family_handle_t* column_family) {
rocksdb_iterator_t* result = new rocksdb_iterator_t;
result->rep = wbwi->rep->NewIteratorWithBase(column_family->rep, base_iterator->rep);
delete base_iterator;
return result;
}
char* rocksdb_writebatch_wi_get_from_batch(
rocksdb_writebatch_wi_t* wbwi,
const rocksdb_options_t* options,
const char* key, size_t keylen,
size_t* vallen,
char** errptr) {
char* result = nullptr;
std::string tmp;
Status s = wbwi->rep->GetFromBatch(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;
}
char* rocksdb_writebatch_wi_get_from_batch_cf(
rocksdb_writebatch_wi_t* wbwi,
const rocksdb_options_t* options,
rocksdb_column_family_handle_t* column_family,
const char* key, size_t keylen,
size_t* vallen,
char** errptr) {
char* result = nullptr;
std::string tmp;
Status s = wbwi->rep->GetFromBatch(column_family->rep, 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;
}
char* rocksdb_writebatch_wi_get_from_batch_and_db(
rocksdb_writebatch_wi_t* wbwi,
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 = wbwi->rep->GetFromBatchAndDB(db->rep, 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;
}
char* rocksdb_writebatch_wi_get_from_batch_and_db_cf(
rocksdb_writebatch_wi_t* wbwi,
rocksdb_t* db,
const rocksdb_readoptions_t* options,
rocksdb_column_family_handle_t* column_family,
const char* key, size_t keylen,
size_t* vallen,
char** errptr) {
char* result = nullptr;
std::string tmp;
Status s = wbwi->rep->GetFromBatchAndDB(db->rep, options->rep, column_family->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;
}
void rocksdb_write_writebatch_wi(
rocksdb_t* db,
const rocksdb_writeoptions_t* options,
rocksdb_writebatch_wi_t* wbwi,
char** errptr) {
WriteBatch* wb = wbwi->rep->GetWriteBatch();
SaveError(errptr, db->rep->Write(options->rep, wb));
}
rocksdb_block_based_table_options_t*
rocksdb_block_based_options_create() {
return new rocksdb_block_based_table_options_t;

125
db/c_test.c
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@ -87,6 +87,16 @@ static void Free(char** ptr) {
}
}
static void CheckValue(
char* err,
const char* expected,
char** actual,
size_t actual_length) {
CheckNoError(err);
CheckEqual(expected, *actual, actual_length);
Free(actual);
}
static void CheckGet(
rocksdb_t* db,
const rocksdb_readoptions_t* options,
@ -608,6 +618,90 @@ int main(int argc, char** argv) {
rocksdb_writebatch_destroy(wb2);
}
StartPhase("writebatch_wi");
{
rocksdb_writebatch_wi_t* wbi = rocksdb_writebatch_wi_create(0, 1);
rocksdb_writebatch_wi_put(wbi, "foo", 3, "a", 1);
rocksdb_writebatch_wi_clear(wbi);
rocksdb_writebatch_wi_put(wbi, "bar", 3, "b", 1);
rocksdb_writebatch_wi_put(wbi, "box", 3, "c", 1);
rocksdb_writebatch_wi_delete(wbi, "bar", 3);
int count = rocksdb_writebatch_wi_count(wbi);
CheckCondition(count == 3);
size_t size;
char* value;
value = rocksdb_writebatch_wi_get_from_batch(wbi, options, "box", 3, &size, &err);
CheckValue(err, "c", &value, size);
value = rocksdb_writebatch_wi_get_from_batch(wbi, options, "bar", 3, &size, &err);
CheckValue(err, NULL, &value, size);
value = rocksdb_writebatch_wi_get_from_batch_and_db(wbi, db, roptions, "foo", 3, &size, &err);
CheckValue(err, "hello", &value, size);
value = rocksdb_writebatch_wi_get_from_batch_and_db(wbi, db, roptions, "box", 3, &size, &err);
CheckValue(err, "c", &value, size);
rocksdb_write_writebatch_wi(db, woptions, wbi, &err);
CheckNoError(err);
CheckGet(db, roptions, "foo", "hello");
CheckGet(db, roptions, "bar", NULL);
CheckGet(db, roptions, "box", "c");
int pos = 0;
rocksdb_writebatch_wi_iterate(wbi, &pos, CheckPut, CheckDel);
CheckCondition(pos == 3);
rocksdb_writebatch_wi_clear(wbi);
rocksdb_writebatch_wi_put(wbi, "bar", 3, "b", 1);
rocksdb_writebatch_wi_put(wbi, "bay", 3, "d", 1);
rocksdb_writebatch_wi_delete_range(wbi, "bar", 3, "bay", 3);
rocksdb_write_writebatch_wi(db, woptions, wbi, &err);
CheckNoError(err);
CheckGet(db, roptions, "bar", NULL);
CheckGet(db, roptions, "bay", "d");
rocksdb_writebatch_wi_clear(wbi);
const char* start_list[1] = {"bay"};
const size_t start_sizes[1] = {3};
const char* end_list[1] = {"baz"};
const size_t end_sizes[1] = {3};
rocksdb_writebatch_wi_delete_rangev(wbi, 1, start_list, start_sizes, end_list,
end_sizes);
rocksdb_write_writebatch_wi(db, woptions, wbi, &err);
CheckNoError(err);
CheckGet(db, roptions, "bay", NULL);
rocksdb_writebatch_wi_destroy(wbi);
}
StartPhase("writebatch_wi_vectors");
{
rocksdb_writebatch_wi_t* wb = rocksdb_writebatch_wi_create(0, 1);
const char* k_list[2] = { "z", "ap" };
const size_t k_sizes[2] = { 1, 2 };
const char* v_list[3] = { "x", "y", "z" };
const size_t v_sizes[3] = { 1, 1, 1 };
rocksdb_writebatch_wi_putv(wb, 2, k_list, k_sizes, 3, v_list, v_sizes);
rocksdb_write_writebatch_wi(db, woptions, wb, &err);
CheckNoError(err);
CheckGet(db, roptions, "zap", "xyz");
rocksdb_writebatch_wi_delete(wb, "zap", 3);
rocksdb_write_writebatch_wi(db, woptions, wb, &err);
CheckNoError(err);
CheckGet(db, roptions, "zap", NULL);
rocksdb_writebatch_wi_destroy(wb);
}
StartPhase("writebatch_wi_savepoint");
{
rocksdb_writebatch_wi_t* wb = rocksdb_writebatch_wi_create(0, 1);
rocksdb_writebatch_wi_set_save_point(wb);
const char* k_list[2] = {"z", "ap"};
const size_t k_sizes[2] = {1, 2};
const char* v_list[3] = {"x", "y", "z"};
const size_t v_sizes[3] = {1, 1, 1};
rocksdb_writebatch_wi_putv(wb, 2, k_list, k_sizes, 3, v_list, v_sizes);
rocksdb_writebatch_wi_rollback_to_save_point(wb, &err);
CheckNoError(err);
rocksdb_write_writebatch_wi(db, woptions, wb, &err);
CheckNoError(err);
CheckGet(db, roptions, "zap", NULL);
rocksdb_writebatch_wi_destroy(wb);
}
StartPhase("iter");
{
rocksdb_iterator_t* iter = rocksdb_create_iterator(db, roptions);
@ -634,6 +728,37 @@ int main(int argc, char** argv) {
rocksdb_iter_destroy(iter);
}
StartPhase("wbwi_iter");
{
rocksdb_iterator_t* base_iter = rocksdb_create_iterator(db, roptions);
rocksdb_writebatch_wi_t* wbi = rocksdb_writebatch_wi_create(0, 1);
rocksdb_writebatch_wi_put(wbi, "bar", 3, "b", 1);
rocksdb_writebatch_wi_delete(wbi, "foo", 3);
rocksdb_iterator_t* iter = rocksdb_writebatch_wi_create_iterator_with_base(wbi, base_iter);
CheckCondition(!rocksdb_iter_valid(iter));
rocksdb_iter_seek_to_first(iter);
CheckCondition(rocksdb_iter_valid(iter));
CheckIter(iter, "bar", "b");
rocksdb_iter_next(iter);
CheckIter(iter, "box", "c");
rocksdb_iter_prev(iter);
CheckIter(iter, "bar", "b");
rocksdb_iter_prev(iter);
CheckCondition(!rocksdb_iter_valid(iter));
rocksdb_iter_seek_to_last(iter);
CheckIter(iter, "box", "c");
rocksdb_iter_seek(iter, "b", 1);
CheckIter(iter, "bar", "b");
rocksdb_iter_seek_for_prev(iter, "c", 1);
CheckIter(iter, "box", "c");
rocksdb_iter_seek_for_prev(iter, "box", 3);
CheckIter(iter, "box", "c");
rocksdb_iter_get_error(iter, &err);
CheckNoError(err);
rocksdb_iter_destroy(iter);
rocksdb_writebatch_wi_destroy(wbi);
}
StartPhase("multiget");
{
const char* keys[3] = { "box", "foo", "notfound" };

130
include/rocksdb/c.h
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@ -102,6 +102,7 @@ typedef struct rocksdb_slicetransform_t rocksdb_slicetransform_t;
typedef struct rocksdb_snapshot_t rocksdb_snapshot_t;
typedef struct rocksdb_writablefile_t rocksdb_writablefile_t;
typedef struct rocksdb_writebatch_t rocksdb_writebatch_t;
typedef struct rocksdb_writebatch_wi_t rocksdb_writebatch_wi_t;
typedef struct rocksdb_writeoptions_t rocksdb_writeoptions_t;
typedef struct rocksdb_universal_compaction_options_t rocksdb_universal_compaction_options_t;
typedef struct rocksdb_livefiles_t rocksdb_livefiles_t;
@ -457,6 +458,135 @@ extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_set_save_point(
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_rollback_to_save_point(
rocksdb_writebatch_t*, char** errptr);
/* Write batch with index */
extern ROCKSDB_LIBRARY_API rocksdb_writebatch_wi_t* rocksdb_writebatch_wi_create(
size_t reserved_bytes,
unsigned char overwrite_keys);
extern ROCKSDB_LIBRARY_API rocksdb_writebatch_wi_t* rocksdb_writebatch_wi_create_from(
const char* rep, size_t size);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_destroy(
rocksdb_writebatch_wi_t*);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_clear(rocksdb_writebatch_wi_t*);
extern ROCKSDB_LIBRARY_API int rocksdb_writebatch_wi_count(rocksdb_writebatch_wi_t* b);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_put(rocksdb_writebatch_wi_t*,
const char* key,
size_t klen,
const char* val,
size_t vlen);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_put_cf(
rocksdb_writebatch_wi_t*, rocksdb_column_family_handle_t* column_family,
const char* key, size_t klen, const char* val, size_t vlen);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_putv(
rocksdb_writebatch_wi_t* b, int num_keys, const char* const* keys_list,
const size_t* keys_list_sizes, int num_values,
const char* const* values_list, const size_t* values_list_sizes);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_putv_cf(
rocksdb_writebatch_wi_t* b, rocksdb_column_family_handle_t* column_family,
int num_keys, const char* const* keys_list, const size_t* keys_list_sizes,
int num_values, const char* const* values_list,
const size_t* values_list_sizes);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_merge(rocksdb_writebatch_wi_t*,
const char* key,
size_t klen,
const char* val,
size_t vlen);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_merge_cf(
rocksdb_writebatch_wi_t*, rocksdb_column_family_handle_t* column_family,
const char* key, size_t klen, const char* val, size_t vlen);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_mergev(
rocksdb_writebatch_wi_t* b, int num_keys, const char* const* keys_list,
const size_t* keys_list_sizes, int num_values,
const char* const* values_list, const size_t* values_list_sizes);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_mergev_cf(
rocksdb_writebatch_wi_t* b, rocksdb_column_family_handle_t* column_family,
int num_keys, const char* const* keys_list, const size_t* keys_list_sizes,
int num_values, const char* const* values_list,
const size_t* values_list_sizes);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_delete(rocksdb_writebatch_wi_t*,
const char* key,
size_t klen);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_delete_cf(
rocksdb_writebatch_wi_t*, rocksdb_column_family_handle_t* column_family,
const char* key, size_t klen);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_deletev(
rocksdb_writebatch_wi_t* b, int num_keys, const char* const* keys_list,
const size_t* keys_list_sizes);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_deletev_cf(
rocksdb_writebatch_wi_t* b, rocksdb_column_family_handle_t* column_family,
int num_keys, const char* const* keys_list, const size_t* keys_list_sizes);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_delete_range(
rocksdb_writebatch_wi_t* b, const char* start_key, size_t start_key_len,
const char* end_key, size_t end_key_len);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_delete_range_cf(
rocksdb_writebatch_wi_t* b, rocksdb_column_family_handle_t* column_family,
const char* start_key, size_t start_key_len, const char* end_key,
size_t end_key_len);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_delete_rangev(
rocksdb_writebatch_wi_t* b, int num_keys, const char* const* start_keys_list,
const size_t* start_keys_list_sizes, const char* const* end_keys_list,
const size_t* end_keys_list_sizes);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_delete_rangev_cf(
rocksdb_writebatch_wi_t* b, rocksdb_column_family_handle_t* column_family,
int num_keys, const char* const* start_keys_list,
const size_t* start_keys_list_sizes, const char* const* end_keys_list,
const size_t* end_keys_list_sizes);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_put_log_data(
rocksdb_writebatch_wi_t*, const char* blob, size_t len);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_iterate(
rocksdb_writebatch_wi_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));
extern ROCKSDB_LIBRARY_API const char* rocksdb_writebatch_wi_data(
rocksdb_writebatch_wi_t* b,
size_t* size);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_set_save_point(
rocksdb_writebatch_wi_t*);
extern ROCKSDB_LIBRARY_API void rocksdb_writebatch_wi_rollback_to_save_point(
rocksdb_writebatch_wi_t*, char** errptr);
extern ROCKSDB_LIBRARY_API char* rocksdb_writebatch_wi_get_from_batch(
rocksdb_writebatch_wi_t* wbwi,
const rocksdb_options_t* options,
const char* key, size_t keylen,
size_t* vallen,
char** errptr);
extern ROCKSDB_LIBRARY_API char* rocksdb_writebatch_wi_get_from_batch_cf(
rocksdb_writebatch_wi_t* wbwi,
const rocksdb_options_t* options,
rocksdb_column_family_handle_t* column_family,
const char* key, size_t keylen,
size_t* vallen,
char** errptr);
extern ROCKSDB_LIBRARY_API char* rocksdb_writebatch_wi_get_from_batch_and_db(
rocksdb_writebatch_wi_t* wbwi,
rocksdb_t* db,
const rocksdb_readoptions_t* options,
const char* key, size_t keylen,
size_t* vallen,
char** errptr);
extern ROCKSDB_LIBRARY_API char* rocksdb_writebatch_wi_get_from_batch_and_db_cf(
rocksdb_writebatch_wi_t* wbwi,
rocksdb_t* db,
const rocksdb_readoptions_t* options,
rocksdb_column_family_handle_t* column_family,
const char* key, size_t keylen,
size_t* vallen,
char** errptr);
extern ROCKSDB_LIBRARY_API void rocksdb_write_writebatch_wi(
rocksdb_t* db,
const rocksdb_writeoptions_t* options,
rocksdb_writebatch_wi_t* wbwi,
char** errptr);
extern ROCKSDB_LIBRARY_API rocksdb_iterator_t* rocksdb_writebatch_wi_create_iterator_with_base(
rocksdb_writebatch_wi_t* wbwi,
rocksdb_iterator_t* base_iterator);
extern ROCKSDB_LIBRARY_API rocksdb_iterator_t* rocksdb_writebatch_wi_create_iterator_with_base_cf(
rocksdb_writebatch_wi_t* wbwi,
rocksdb_iterator_t* base_iterator,
rocksdb_column_family_handle_t* cf);
/* Block based table options */
extern ROCKSDB_LIBRARY_API rocksdb_block_based_table_options_t*

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