src/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/macros.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/memory/weak_ptr.h"
  14 #include "net/base/backoff_entry.h"
  15 #include "net/url_request/url_fetcher_delegate.h"
  16 #include "net/url_request/url_request_context_getter.h"
  17
  18 namespace net {
  19 class URLRequestContextGetter;
  20 }
  21
  22 namespace gcm {
  23
  24 // Defines the request to talk with the server to determine if the GCM support
  25 // should be enabled.
  26 class GCMChannelStatusRequest : public net::URLFetcherDelegate {
  27  public:
  28   // Callback completing the channel status request.
  29   typedef base::Callback<void(bool enabled, int poll_interval_seconds)>
  30       GCMChannelStatusRequestCallback;
  31
  32   GCMChannelStatusRequest(
  33       const scoped_refptr<net::URLRequestContextGetter>& request_context_getter,
  34       const GCMChannelStatusRequestCallback& callback);
  35   virtual ~GCMChannelStatusRequest();
  36
  37   void Start();
  38
  39   static int default_poll_interval_seconds();
  40   static int min_poll_interval_seconds();
  41
  42  private:
  43   // Overridden from URLFetcherDelegate:
  44   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
  45
  46   bool ParseResponse(const net::URLFetcher* source);
  47   void RetryWithBackoff(bool update_backoff);
  48
  49   scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
  50   GCMChannelStatusRequestCallback callback_;
  51   scoped_ptr<net::URLFetcher> url_fetcher_;
  52   net::BackoffEntry backoff_entry_;
  53   base::WeakPtrFactory<GCMChannelStatusRequest> weak_ptr_factory_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(GCMChannelStatusRequest);
  56 };
  57
  58 }  // namespace gcm
  59
  60 #endif  // COMPONENTS_GCM_DRIVER_GCM_CHANNEL_STATUS_REQUEST_H_