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Add column families related functions (C API) 

Summary:
(#2564)
Closes https://github.com/facebook/rocksdb/pull/2669

Differential Revision: D5594151

Pulled By: yiwu-arbug

fbshipit-source-id: 67ae9446342f3323d6ecad8e811f4158da194270
This commit is contained in:
Stanislav Tkach 2017-08-10 13:40:57 -07:00 committed by Facebook Github Bot
parent 64f8484356
commit 25df24254b
3 changed files with 149 additions and 1 deletions
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85
db/c.cc
View File

@ -3249,6 +3249,17 @@ void rocksdb_transaction_options_set_max_write_batch_size(
opt->rep.max_write_batch_size = size;
}
rocksdb_column_family_handle_t* rocksdb_transactiondb_create_column_family(
rocksdb_transactiondb_t* txn_db,
const rocksdb_options_t* column_family_options,
const char* column_family_name, char** errptr) {
rocksdb_column_family_handle_t* handle = new rocksdb_column_family_handle_t;
SaveError(errptr, txn_db->rep->CreateColumnFamily(
ColumnFamilyOptions(column_family_options->rep),
std::string(column_family_name), &(handle->rep)));
return handle;
}
rocksdb_transactiondb_t* rocksdb_transactiondb_open(
const rocksdb_options_t* options,
const rocksdb_transactiondb_options_t* txn_db_options, const char* name,
@ -3325,6 +3336,27 @@ char* rocksdb_transaction_get(rocksdb_transaction_t* txn,
return result;
}
char* rocksdb_transaction_get_cf(rocksdb_transaction_t* txn,
const rocksdb_readoptions_t* options,
rocksdb_column_family_handle_t* column_family,
const char* key, size_t klen, size_t* vlen,
char** errptr) {
char* result = nullptr;
std::string tmp;
Status s =
txn->rep->Get(options->rep, column_family->rep, Slice(key, klen), &tmp);
if (s.ok()) {
*vlen = tmp.size();
result = CopyString(tmp);
} else {
*vlen = 0;
if (!s.IsNotFound()) {
SaveError(errptr, s);
}
}
return result;
}
// Read a key outside a transaction
char* rocksdb_transactiondb_get(
rocksdb_transactiondb_t* txn_db,
@ -3347,6 +3379,26 @@ char* rocksdb_transactiondb_get(
return result;
}
char* rocksdb_transactiondb_get_cf(
rocksdb_transactiondb_t* txn_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 = txn_db->rep->Get(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;
}
// Put a key inside a transaction
void rocksdb_transaction_put(rocksdb_transaction_t* txn, const char* key,
size_t klen, const char* val, size_t vlen,
@ -3354,6 +3406,14 @@ void rocksdb_transaction_put(rocksdb_transaction_t* txn, const char* key,
SaveError(errptr, txn->rep->Put(Slice(key, klen), Slice(val, vlen)));
}
void rocksdb_transaction_put_cf(rocksdb_transaction_t* txn,
rocksdb_column_family_handle_t* column_family,
const char* key, size_t klen, const char* val,
size_t vlen, char** errptr) {
SaveError(errptr, txn->rep->Put(column_family->rep, Slice(key, klen),
Slice(val, vlen)));
}
//Put a key outside a transaction
void rocksdb_transactiondb_put(rocksdb_transactiondb_t* txn_db,
const rocksdb_writeoptions_t* options,
@ -3363,6 +3423,16 @@ void rocksdb_transactiondb_put(rocksdb_transactiondb_t* txn_db,
txn_db->rep->Put(options->rep, Slice(key, klen), Slice(val, vlen)));
}
void rocksdb_transactiondb_put_cf(rocksdb_transactiondb_t* txn_db,
const rocksdb_writeoptions_t* options,
rocksdb_column_family_handle_t* column_family,
const char* key, size_t keylen,
const char* val, size_t vallen,
char** errptr) {
SaveError(errptr, txn_db->rep->Put(options->rep, column_family->rep,
Slice(key, keylen), Slice(val, vallen)));
}
//Write batch into transaction db
void rocksdb_transactiondb_write(
rocksdb_transactiondb_t* db,
@ -3372,13 +3442,18 @@ void rocksdb_transactiondb_write(
SaveError(errptr, db->rep->Write(options->rep, &batch->rep));
}
// Delete a key inside a transaction
void rocksdb_transaction_delete(rocksdb_transaction_t* txn, const char* key,
size_t klen, char** errptr) {
SaveError(errptr, txn->rep->Delete(Slice(key, klen)));
}
void rocksdb_transaction_delete_cf(
rocksdb_transaction_t* txn, rocksdb_column_family_handle_t* column_family,
const char* key, size_t klen, char** errptr) {
SaveError(errptr, txn->rep->Delete(column_family->rep, Slice(key, klen)));
}
// Delete a key outside a transaction
void rocksdb_transactiondb_delete(rocksdb_transactiondb_t* txn_db,
const rocksdb_writeoptions_t* options,
@ -3386,6 +3461,14 @@ void rocksdb_transactiondb_delete(rocksdb_transactiondb_t* txn_db,
SaveError(errptr, txn_db->rep->Delete(options->rep, Slice(key, klen)));
}
void rocksdb_transactiondb_delete_cf(
rocksdb_transactiondb_t* txn_db, const rocksdb_writeoptions_t* options,
rocksdb_column_family_handle_t* column_family, const char* key,
size_t keylen, char** errptr) {
SaveError(errptr, txn_db->rep->Delete(options->rep, column_family->rep,
Slice(key, keylen)));
}
// Create an iterator inside a transaction
rocksdb_iterator_t* rocksdb_transaction_create_iterator(
rocksdb_transaction_t* txn, const rocksdb_readoptions_t* options) {

31
db/c_test.c
View File

@ -348,6 +348,20 @@ static void CheckTxnDBGet(
Free(&val);
}
static void CheckTxnDBGetCF(rocksdb_transactiondb_t* txn_db,
const rocksdb_readoptions_t* options,
rocksdb_column_family_handle_t* column_family,
const char* key, const char* expected) {
char* err = NULL;
size_t val_len;
char* val;
val = rocksdb_transactiondb_get_cf(txn_db, options, column_family, key,
strlen(key), &val_len, &err);
CheckNoError(err);
CheckEqual(expected, val, val_len);
Free(&val);
}
int main(int argc, char** argv) {
rocksdb_t* db;
rocksdb_comparator_t* cmp;
@ -1432,6 +1446,23 @@ int main(int argc, char** argv) {
CheckNoError(err);
CheckTxnDBGet(txn_db, roptions, "bar", NULL);
// Column families.
rocksdb_column_family_handle_t* cfh;
cfh = rocksdb_transactiondb_create_column_family(txn_db, options,
"txn_db_cf", &err);
CheckNoError(err);
rocksdb_transactiondb_put_cf(txn_db, woptions, cfh, "cf_foo", 6, "cf_hello",
8, &err);
CheckNoError(err);
CheckTxnDBGetCF(txn_db, roptions, cfh, "cf_foo", "cf_hello");
rocksdb_transactiondb_delete_cf(txn_db, woptions, cfh, "cf_foo", 6, &err);
CheckNoError(err);
CheckTxnDBGetCF(txn_db, roptions, cfh, "cf_foo", NULL);
rocksdb_column_family_handle_destroy(cfh);
// close and destroy
rocksdb_transaction_destroy(txn);
rocksdb_transactiondb_close(txn_db);

34
include/rocksdb/c.h
View File

@ -1256,6 +1256,12 @@ extern ROCKSDB_LIBRARY_API void rocksdb_delete_file_in_range_cf(
/* Transactions */
extern ROCKSDB_LIBRARY_API rocksdb_column_family_handle_t*
rocksdb_transactiondb_create_column_family(
rocksdb_transactiondb_t* txn_db,
const rocksdb_options_t* column_family_options,
const char* column_family_name, char** errptr);
extern ROCKSDB_LIBRARY_API rocksdb_transactiondb_t* rocksdb_transactiondb_open(
const rocksdb_options_t* options,
const rocksdb_transactiondb_options_t* txn_db_options, const char* name,
@ -1286,18 +1292,37 @@ extern ROCKSDB_LIBRARY_API char* rocksdb_transaction_get(
rocksdb_transaction_t* txn, const rocksdb_readoptions_t* options,
const char* key, size_t klen, size_t* vlen, char** errptr);
extern ROCKSDB_LIBRARY_API char* rocksdb_transaction_get_cf(
rocksdb_transaction_t* txn, const rocksdb_readoptions_t* options,
rocksdb_column_family_handle_t* column_family, const char* key, size_t klen,
size_t* vlen, char** errptr);
extern ROCKSDB_LIBRARY_API char* rocksdb_transactiondb_get(
rocksdb_transactiondb_t* txn_db, const rocksdb_readoptions_t* options,
const char* key, size_t klen, size_t* vlen, char** errptr);
extern ROCKSDB_LIBRARY_API char* rocksdb_transactiondb_get_cf(
rocksdb_transactiondb_t* txn_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_transaction_put(
rocksdb_transaction_t* txn, const char* key, size_t klen, const char* val,
size_t vlen, char** errptr);
extern ROCKSDB_LIBRARY_API void rocksdb_transaction_put_cf(
rocksdb_transaction_t* txn, rocksdb_column_family_handle_t* column_family,
const char* key, size_t klen, const char* val, size_t vlen, char** errptr);
extern ROCKSDB_LIBRARY_API void rocksdb_transactiondb_put(
rocksdb_transactiondb_t* txn_db, const rocksdb_writeoptions_t* options,
const char* key, size_t klen, const char* val, size_t vlen, char** errptr);
extern ROCKSDB_LIBRARY_API void rocksdb_transactiondb_put_cf(
rocksdb_transactiondb_t* txn_db, const rocksdb_writeoptions_t* options,
rocksdb_column_family_handle_t* column_family, const char* key,
size_t keylen, const char* val, size_t vallen, char** errptr);
extern ROCKSDB_LIBRARY_API void rocksdb_transactiondb_write(
rocksdb_transactiondb_t* txn_db, const rocksdb_writeoptions_t* options,
rocksdb_writebatch_t *batch, char** errptr);
@ -1305,10 +1330,19 @@ extern ROCKSDB_LIBRARY_API void rocksdb_transactiondb_write(
extern ROCKSDB_LIBRARY_API void rocksdb_transaction_delete(
rocksdb_transaction_t* txn, const char* key, size_t klen, char** errptr);
extern ROCKSDB_LIBRARY_API void rocksdb_transaction_delete_cf(
rocksdb_transaction_t* txn, rocksdb_column_family_handle_t* column_family,
const char* key, size_t klen, char** errptr);
extern ROCKSDB_LIBRARY_API void rocksdb_transactiondb_delete(
rocksdb_transactiondb_t* txn_db, const rocksdb_writeoptions_t* options,
const char* key, size_t klen, char** errptr);
extern ROCKSDB_LIBRARY_API void rocksdb_transactiondb_delete_cf(
rocksdb_transactiondb_t* txn_db, const rocksdb_writeoptions_t* options,
rocksdb_column_family_handle_t* column_family, const char* key,
size_t keylen, char** errptr);
extern ROCKSDB_LIBRARY_API rocksdb_iterator_t*
rocksdb_transaction_create_iterator(rocksdb_transaction_t* txn,
const rocksdb_readoptions_t* options);