syntax = "proto3"; package engula.v1; import "engula/v1/txn.proto"; import "engula/v1/database.proto"; import "engula/v1/collection.proto"; service Engula { rpc Txn(TxnRequest) returns (TxnResponse) {} rpc Database(DatabaseRequest) returns (DatabaseResponse) {} rpc Collection(CollectionRequest) returns (CollectionResponse) {} }