components/signin/core/browser/device_activity_fetcher.h

   1 // Copyright 2015 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_SIGNIN_CORE_BROWSER_DEVICE_ACTVITIY_FETCHER_H_
   6 #define COMPONENTS_SIGNIN_CORE_BROWSER_DEVICE_ACTVITIY_FETCHER_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/time/time.h"
  13 #include "base/timer/timer.h"
  14 #include "google_apis/gaia/gaia_auth_consumer.h"
  15 #include "net/base/backoff_entry.h"
  16 #include "net/url_request/url_fetcher_delegate.h"
  17
  18 class GaiaAuthFetcher;
  19 class SigninClient;
  20
  21 namespace net {
  22 class URLFetcher;
  23 }
  24
  25 class DeviceActivityFetcher : public GaiaAuthConsumer,
  26                               public net::URLFetcherDelegate {
  27  public:
  28   struct DeviceActivity {
  29     base::Time last_active;
  30     std::string name;
  31   };
  32
  33   class Observer {
  34    public:
  35     virtual void OnFetchDeviceActivitySuccess(
  36         const std::vector<DeviceActivityFetcher::DeviceActivity>& devices) = 0;
  37     virtual void OnFetchDeviceActivityFailure() {}
  38   };
  39
  40   DeviceActivityFetcher(SigninClient* signin_client,
  41                         DeviceActivityFetcher::Observer* observer);
  42   ~DeviceActivityFetcher() override;
  43
  44   void Start();
  45   void Stop();
  46
  47   // GaiaAuthConsumer:
  48   void OnListIdpSessionsSuccess(const std::string& login_hint) override;
  49   void OnListIdpSessionsError(const GoogleServiceAuthError& error) override;
  50   void OnGetTokenResponseSuccess(const ClientOAuthResult& result) override;
  51   void OnGetTokenResponseError(const GoogleServiceAuthError& error) override;
  52
  53   // net::URLFetcherDelegate:
  54   void OnURLFetchComplete(const net::URLFetcher* source) override;
  55
  56  private:
  57   void StartFetchingListIdpSessions();
  58   void StartFetchingGetTokenResponse();
  59   void StartFetchingListDevices();
  60
  61   // Gaia fetcher used for acquiring an access token.
  62   scoped_ptr<GaiaAuthFetcher> gaia_auth_fetcher_;
  63   // URL Fetcher used for calling List Devices.
  64   scoped_ptr<net::URLFetcher> url_fetcher_;
  65
  66   // If either fetcher fails, retry with exponential backoff.
  67   net::BackoffEntry fetcher_backoff_;
  68   base::OneShotTimer<DeviceActivityFetcher> fetcher_timer_;
  69   int fetcher_retries_;
  70
  71   std::string access_token_;
  72   std::string login_hint_;
  73
  74   SigninClient* signin_client_;  // Weak pointer.
  75   Observer* observer_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(DeviceActivityFetcher);
  78 };
  79
  80 #endif  // COMPONENTS_SIGNIN_CORE_BROWSER_DEVICE_ACTVITIY_FETCHER_H_