// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved. #ifndef DBWRAPPER_H #define DBWRAPPER_H #include <map> #include <node.h> #include "rocksdb/db.h" #include "rocksdb/slice.h" #include "rocksdb/options.h" using namespace v8; // Used to encapsulate a particular instance of an opened database. // // This object should not be used directly in C++; it exists solely to provide // a mapping from a JavaScript object to a C++ code that can use the RocksDB // API. class DBWrapper : public node::ObjectWrap { public: static void Init(Handle<Object> exports); private: explicit DBWrapper(); ~DBWrapper(); // Helper methods static bool HasFamilyNamed(std::string& name, DBWrapper* db); static bool AddToBatch(ROCKSDB_NAMESPACE::WriteBatch& batch, bool del, Handle<Array> array); static bool AddToBatch(ROCKSDB_NAMESPACE::WriteBatch& batch, bool del, Handle<Array> array, DBWrapper* db_wrapper, std::string cf); static Handle<Value> CompactRangeDefault(const v8::Arguments& args); static Handle<Value> CompactColumnFamily(const Arguments& args); static Handle<Value> CompactOptions(const Arguments& args); static Handle<Value> CompactAll(const Arguments& args); // C++ mappings of API methods static Persistent<v8::Function> constructor; static Handle<Value> Open(const Arguments& args); static Handle<Value> New(const Arguments& args); static Handle<Value> Get(const Arguments& args); static Handle<Value> Put(const Arguments& args); static Handle<Value> Delete(const Arguments& args); static Handle<Value> Dump(const Arguments& args); static Handle<Value> WriteBatch(const Arguments& args); static Handle<Value> CreateColumnFamily(const Arguments& args); static Handle<Value> CompactRange(const Arguments& args); static Handle<Value> Close(const Arguments& args); // Internal fields ROCKSDB_NAMESPACE::Options options_; ROCKSDB_NAMESPACE::Status status_; ROCKSDB_NAMESPACE::DB* db_; std::unordered_map<std::string, ROCKSDB_NAMESPACE::ColumnFamilyHandle*> columnFamilies_; }; #endif