components/component_updater/url_fetcher_downloader.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_COMPONENT_UPDATER_URL_FETCHER_DOWNLOADER_H_
   6 #define COMPONENTS_COMPONENT_UPDATER_URL_FETCHER_DOWNLOADER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/threading/thread_checker.h"
  12 #include "base/time/time.h"
  13 #include "components/component_updater/crx_downloader.h"
  14 #include "net/url_request/url_fetcher_delegate.h"
  15
  16 namespace net {
  17 class URLFetcher;
  18 class URLRequestContextGetter;
  19 }
  20
  21 namespace component_updater {
  22
  23 // Implements a CRX downloader in top of the URLFetcher.
  24 class UrlFetcherDownloader : public CrxDownloader,
  25                              public net::URLFetcherDelegate {
  26  protected:
  27   friend class CrxDownloader;
  28   UrlFetcherDownloader(scoped_ptr<CrxDownloader> successor,
  29                        net::URLRequestContextGetter* context_getter,
  30                        scoped_refptr<base::SequencedTaskRunner> task_runner);
  31   virtual ~UrlFetcherDownloader();
  32
  33  private:
  34   // Overrides for CrxDownloader.
  35   virtual void DoStartDownload(const GURL& url) OVERRIDE;
  36
  37   // Overrides for URLFetcherDelegate.
  38   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
  39   virtual void OnURLFetchDownloadProgress(const net::URLFetcher* source,
  40                                           int64 current,
  41                                           int64 total) OVERRIDE;
  42   scoped_ptr<net::URLFetcher> url_fetcher_;
  43   net::URLRequestContextGetter* context_getter_;
  44   scoped_refptr<base::SequencedTaskRunner> task_runner_;
  45
  46   base::Time download_start_time_;
  47
  48   int64 downloaded_bytes_;
  49   int64 total_bytes_;
  50
  51   base::ThreadChecker thread_checker_;
  52
  53   DISALLOW_COPY_AND_ASSIGN(UrlFetcherDownloader);
  54 };
  55
  56 }  // namespace component_updater
  57
  58 #endif  // COMPONENTS_COMPONENT_UPDATER_URL_FETCHER_DOWNLOADER_H_