components/gcm_driver/gcm_channel_status_request.h

   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_GCM_DRIVER_GCM_CHANNEL_STATUS_REQUEST_H_
   6 #define COMPONENTS_GCM_DRIVER_GCM_CHANNEL_STATUS_REQUEST_H_
   7
   8 #include "base/callback.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/gtest_prod_util.h"
  11 #include "base/macros.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "net/base/backoff_entry.h"
  16 #include "net/url_request/url_fetcher_delegate.h"
  17 #include "net/url_request/url_request_context_getter.h"
  18
  19 namespace net {
  20 class URLRequestContextGetter;
  21 }
  22
  23 namespace gcm {
  24
  25 // Defines the request to talk with the server to determine if the GCM support
  26 // should be enabled.
  27 class GCMChannelStatusRequest : public net::URLFetcherDelegate {
  28  public:
  29   // Callback completing the channel status request.
  30   // |update_received|: use the existing values if it is false which means no
  31   //                    update is received.
  32   // |enabled|: indicates if GCM is enabled (allowed to run) or not.
  33   // |poll_interval_seconds|: the interval in seconds to start next poll
  34   //                          request.
  35   typedef base::Callback<void(bool update_received,
  36                               bool enabled,
  37                               int poll_interval_seconds)>
  38       GCMChannelStatusRequestCallback;
  39
  40   GCMChannelStatusRequest(
  41       const scoped_refptr<net::URLRequestContextGetter>& request_context_getter,
  42       const std::string& channel_status_request_url,
  43       const std::string& user_agent,
  44       const GCMChannelStatusRequestCallback& callback);
  45   ~GCMChannelStatusRequest() override;
  46
  47   void Start();
  48
  49   static int default_poll_interval_seconds();
  50   static int min_poll_interval_seconds();
  51
  52  private:
  53   FRIEND_TEST_ALL_PREFIXES(GCMChannelStatusRequestTest, RequestData);
  54
  55   // Overridden from URLFetcherDelegate:
  56   void OnURLFetchComplete(const net::URLFetcher* source) override;
  57
  58   bool ParseResponse(const net::URLFetcher* source);
  59   void RetryWithBackoff(bool update_backoff);
  60
  61   scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
  62   const std::string channel_status_request_url_;
  63   const std::string user_agent_;
  64   GCMChannelStatusRequestCallback callback_;
  65   scoped_ptr<net::URLFetcher> url_fetcher_;
  66   net::BackoffEntry backoff_entry_;
  67   base::WeakPtrFactory<GCMChannelStatusRequest> weak_ptr_factory_;
  68
  69   DISALLOW_COPY_AND_ASSIGN(GCMChannelStatusRequest);
  70 };
  71
  72 }  // namespace gcm
  73
  74 #endif  // COMPONENTS_GCM_DRIVER_GCM_CHANNEL_STATUS_REQUEST_H_