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1 //
2 // Copyright (C) 2013 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_CLIENT_FACTORY_H_
18 #define SHILL_DNS_CLIENT_FACTORY_H_
19 
20 #include <string>
21 #include <vector>
22 
23 #include <base/lazy_instance.h>
24 
25 #include "shill/dns_client.h"
26 #include "shill/event_dispatcher.h"
27 #include "shill/net/ip_address.h"
28 
29 namespace shill {
30 
31 class DNSClientFactory {
32  public:
33   virtual ~DNSClientFactory();
34 
35   // This is a singleton. Use DNSClientFactory::GetInstance()->Foo().
36   static DNSClientFactory* GetInstance();
37 
38   virtual DNSClient* CreateDNSClient(
39       IPAddress::Family family,
40       const std::string& interface_name,
41       const std::vector<std::string>& dns_servers,
42       int timeout_ms,
43       EventDispatcher* dispatcher,
44       const DNSClient::ClientCallback& callback);
45 
46  protected:
47   DNSClientFactory();
48 
49  private:
50   friend struct base::DefaultLazyInstanceTraits<DNSClientFactory>;
51 
52   DISALLOW_COPY_AND_ASSIGN(DNSClientFactory);
53 };
54 
55 }  // namespace shill
56 
57 #endif  // SHILL_DNS_CLIENT_FACTORY_H_
58