1 /* 2 * Copyright (c) 2017 VMware, Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include "table_storage.h" 20 21 namespace ebpf { 22 23 class TableStorageIteratorImpl { 24 public: 25 typedef std::pair<const std::string, TableDesc> value_type; 26 typedef value_type *pointer; 27 typedef value_type &reference; 28 typedef TableStorageIteratorImpl self_type; ~TableStorageIteratorImpl()29 virtual ~TableStorageIteratorImpl() {} 30 virtual std::unique_ptr<self_type> clone() const = 0; 31 virtual self_type &operator++() = 0; 32 virtual value_type &operator*() const = 0; 33 virtual pointer operator->() const = 0; 34 35 private: 36 }; 37 38 class TableStorageImpl { 39 public: ~TableStorageImpl()40 virtual ~TableStorageImpl(){}; 41 virtual bool Find(const std::string &name, TableStorage::iterator &result) const = 0; 42 virtual bool Insert(const std::string &name, TableDesc &&desc) = 0; 43 virtual bool Delete(const std::string &name) = 0; 44 virtual std::unique_ptr<TableStorageIteratorImpl> begin() = 0; 45 virtual std::unique_ptr<TableStorageIteratorImpl> end() = 0; 46 virtual std::unique_ptr<TableStorageIteratorImpl> lower_bound(const std::string &k) = 0; 47 virtual std::unique_ptr<TableStorageIteratorImpl> upper_bound(const std::string &k) = 0; 48 virtual std::unique_ptr<TableStorageIteratorImpl> erase(const TableStorageIteratorImpl &it) = 0; 49 }; 50 51 } // namespace ebpf 52