1 //
2 // Copyright (C) 2015 The Android Open Source Project
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 #ifndef SHILL_DNS_SERVER_PROXY_FACTORY_H_
18 #define SHILL_DNS_SERVER_PROXY_FACTORY_H_
19 
20 #include <string>
21 #include <vector>
22 
23 #include <base/lazy_instance.h>
24 
25 namespace shill {
26 
27 class DNSServerProxy;
28 
29 class DNSServerProxyFactory {
30  public:
31   virtual ~DNSServerProxyFactory();
32 
33   // This is a singleton. Use DNSServerProxyFactory::GetInstance()->Foo().
34   static DNSServerProxyFactory* GetInstance();
35 
36   virtual DNSServerProxy* CreateDNSServerProxy(
37       const std::vector<std::string>& dns_servers);
38 
39  protected:
40   DNSServerProxyFactory();
41 
42  private:
43   friend struct base::DefaultLazyInstanceTraits<DNSServerProxyFactory>;
44 
45   DISALLOW_COPY_AND_ASSIGN(DNSServerProxyFactory);
46 };
47 
48 }  // namespace shill
49 
50 #endif  // SHILL_DNS_SERVER_PROXY_FACTORY_H_
51