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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef COMPONENTS_COPRESENCE_RPC_HTTP_POST_H_ | |
6 #define COMPONENTS_COPRESENCE_RPC_HTTP_POST_H_ | |
7 | |
8 #include <memory> | |
9 #include <string> | |
10 | |
11 #include "base/callback.h" | |
12 #include "base/macros.h" | |
13 #include "net/url_request/url_fetcher_delegate.h" | |
14 | |
15 namespace google { | |
16 namespace protobuf { | |
17 class MessageLite; | |
18 } | |
19 } | |
20 | |
21 namespace net { | |
22 class URLRequestContextGetter; | |
23 } | |
24 | |
25 namespace copresence { | |
26 | |
27 // This class handles all Apiary calls to the Copresence server. | |
28 // It configures the HTTP request appropriately and reports any errors. | |
29 // If deleted, the HTTP request is cancelled. | |
30 // | |
31 // TODO(ckehoe): Add retry logic. | |
32 class HttpPost : public net::URLFetcherDelegate { | |
33 public: | |
34 // Callback to receive the HTTP status code and body of the response | |
35 // (if any). A pointer to this HttpPost object is also passed along. | |
36 using ResponseCallback = base::Callback<void(int, const std::string&)>; | |
37 | |
38 // Create a request to the Copresence server. | |
39 // |url_context_getter| is owned by the caller, | |
40 // and the context it provides must be available until the request completes. | |
41 HttpPost(net::URLRequestContextGetter* url_context_getter, | |
42 const std::string& server_host, | |
43 // TODO(ckehoe): Condense some of these into a struct. | |
44 const std::string& rpc_name, | |
45 std::string api_key, // If blank, we overwrite with a default. | |
46 const std::string& auth_token, | |
47 const std::string& tracing_token, | |
48 const google::protobuf::MessageLite& request_proto); | |
49 | |
50 // HTTP requests are cancelled on delete. | |
51 ~HttpPost() override; | |
52 | |
53 // Send an HttpPost request. | |
54 void Start(const ResponseCallback& response_callback); | |
55 | |
56 private: | |
57 static const int kUrlFetcherId = 1; | |
58 static const char kApiKeyField[]; | |
59 static const char kTracingField[]; | |
60 | |
61 friend class HttpPostTest; | |
62 | |
63 // Overridden from net::URLFetcherDelegate. | |
64 void OnURLFetchComplete(const net::URLFetcher* source) override; | |
65 | |
66 ResponseCallback response_callback_; | |
67 | |
68 std::unique_ptr<net::URLFetcher> url_fetcher_; | |
69 | |
70 DISALLOW_COPY_AND_ASSIGN(HttpPost); | |
71 }; | |
72 | |
73 } // namespace copresence | |
74 | |
75 #endif // COMPONENTS_COPRESENCE_RPC_HTTP_POST_H_ | |
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