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 #include "common.h"
18 #include "table_storage_impl.h"
19
20 namespace ebpf {
21
22 using std::string;
23 using std::unique_ptr;
24
25 /// A filesystem backed table storage
26 class BpfFsTableStorage : public TableStorageImpl {
27 public:
28 class iterator : public TableStorageIteratorImpl {
29 public:
~iterator()30 virtual ~iterator() {}
31 virtual unique_ptr<self_type> clone() const override;
32 virtual self_type &operator++() override;
33 virtual value_type &operator*() const override;
34 virtual pointer operator->() const override;
35 };
~BpfFsTableStorage()36 virtual ~BpfFsTableStorage() {}
37 virtual bool Find(const string &name, TableStorage::iterator &result) const override;
38 virtual bool Insert(const string &name, TableDesc &&desc) override;
39 virtual bool Delete(const string &name) override;
40 virtual unique_ptr<TableStorageIteratorImpl> begin() override;
41 virtual unique_ptr<TableStorageIteratorImpl> end() override;
42 virtual unique_ptr<TableStorageIteratorImpl> lower_bound(const string &k) override;
43 virtual unique_ptr<TableStorageIteratorImpl> upper_bound(const string &k) override;
44 virtual unique_ptr<TableStorageIteratorImpl> erase(const TableStorageIteratorImpl &it) override;
45
46 private:
47 };
48
Find(const string & name,TableStorage::iterator & result) const49 bool BpfFsTableStorage::Find(const string &name, TableStorage::iterator &result) const {
50 return false;
51 }
52
Insert(const string & name,TableDesc && desc)53 bool BpfFsTableStorage::Insert(const string &name, TableDesc &&desc) { return false; }
54
Delete(const string & name)55 bool BpfFsTableStorage::Delete(const string &name) { return false; }
56
begin()57 unique_ptr<TableStorageIteratorImpl> BpfFsTableStorage::begin() { return unique_ptr<iterator>(); }
end()58 unique_ptr<TableStorageIteratorImpl> BpfFsTableStorage::end() { return unique_ptr<iterator>(); }
lower_bound(const string & k)59 unique_ptr<TableStorageIteratorImpl> BpfFsTableStorage::lower_bound(const string &k) {
60 return unique_ptr<iterator>();
61 }
upper_bound(const string & k)62 unique_ptr<TableStorageIteratorImpl> BpfFsTableStorage::upper_bound(const string &k) {
63 return unique_ptr<iterator>();
64 }
erase(const TableStorageIteratorImpl & it)65 unique_ptr<TableStorageIteratorImpl> BpfFsTableStorage::erase(const TableStorageIteratorImpl &it) {
66 return unique_ptr<iterator>();
67 }
68
createBpfFsTableStorage()69 unique_ptr<TableStorage> createBpfFsTableStorage() {
70 auto t = make_unique<TableStorage>();
71 t->Init(make_unique<BpfFsTableStorage>());
72 return t;
73 }
74
75 } // namespace ebpf
76