Exemple #1
0
func (db *DB) Open(name string, createIfMissing bool, maxOpenFiles int,
	writeBufSize int, cacheSize int64, compression int) error {
	db.opt = C.rocksdb_options_create()
	C.rocksdb_options_set_create_if_missing(db.opt, boolToUchar(createIfMissing))
	C.rocksdb_options_set_write_buffer_size(db.opt, C.size_t(writeBufSize))
	C.rocksdb_options_set_max_open_files(db.opt, C.int(maxOpenFiles))
	C.rocksdb_options_set_compression(db.opt, C.int(compression))

	var block_options = C.rocksdb_block_based_options_create()
	if cacheSize > 0 {
		db.cache = C.rocksdb_cache_create_lru(C.size_t(cacheSize))
		C.rocksdb_block_based_options_set_block_cache(block_options, db.cache)
	} else {
		C.rocksdb_block_based_options_set_no_block_cache(block_options, 1)
	}
	db.fp = C.rocksdb_filterpolicy_create_bloom(10)
	C.rocksdb_block_based_options_set_filter_policy(block_options, db.fp)

	C.rocksdb_options_set_block_based_table_factory(db.opt, block_options)

	cname := C.CString(name)
	defer C.free(unsafe.Pointer(cname))

	var errStr *C.char
	db.db = C.rocksdb_open(db.opt, cname, &errStr)
	if errStr != nil {
		defer C.free(unsafe.Pointer(errStr))
		return errors.New(C.GoString(errStr))
	}

	db.rOpt = C.rocksdb_readoptions_create()
	db.wOpt = C.rocksdb_writeoptions_create()

	return nil
}
Exemple #2
0
// Open opens a database.
//
// Creating a new database is done by calling SetCreateIfMissing(true) on the
// Options passed to Open.
//
// It is usually wise to set a Cache object on the Options with SetCache to
// keep recently used data from that database in memory.
func Open(dbname string, o *Options) (*DB, error) {
	var errStr *C.char
	ldbname := C.CString(dbname)
	defer C.free(unsafe.Pointer(ldbname))

	C.rocksdb_options_set_block_based_table_factory(o.Opt, o.Bopt)
	rocksdb := C.rocksdb_open(o.Opt, ldbname, &errStr)
	if errStr != nil {
		gs := C.GoString(errStr)
		C.free(unsafe.Pointer(errStr))
		return nil, DatabaseError(gs)
	}
	return &DB{rocksdb}, nil
}
Exemple #3
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func (o *Options) SetBlockBasedTableFactory(bbo *BlockBasedOptions) {
	C.rocksdb_options_set_block_based_table_factory(o.Opt, bbo.Opt)
}
Exemple #4
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// SetBlockBasedTableFactory sets the block based table factory.
func (opts *Options) SetBlockBasedTableFactory(value *BlockBasedTableOptions) {
	opts.bbto = value
	C.rocksdb_options_set_block_based_table_factory(opts.c, value.c)
}
Exemple #5
0
func (o *Options) SetBlockBasedTableFactory(t *TableOptions) {
	C.rocksdb_options_set_block_based_table_factory(o.Opt, t.Opt)
}