content/browser/renderer_host/pepper/quota_reservation.cc

   1 // Copyright 2013 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 #include "content/browser/renderer_host/pepper/quota_reservation.h"
   6
   7 #include "base/bind.h"
   8 #include "base/callback.h"
   9 #include "content/public/browser/browser_thread.h"
  10 #include "webkit/browser/fileapi/file_system_operation_runner.h"
  11 #include "webkit/browser/fileapi/quota/open_file_handle.h"
  12 #include "webkit/browser/fileapi/quota/quota_reservation.h"
  13 #include "webkit/common/fileapi/file_system_util.h"
  14
  15 namespace content {
  16
  17 // static
  18 scoped_refptr<QuotaReservation> QuotaReservation::Create(
  19     scoped_refptr<fileapi::FileSystemContext> file_system_context,
  20     const GURL& origin_url,
  21     fileapi::FileSystemType type) {
  22   return scoped_refptr<QuotaReservation>(
  23       new QuotaReservation(file_system_context, origin_url, type));
  24 }
  25
  26 QuotaReservation::QuotaReservation(
  27     scoped_refptr<fileapi::FileSystemContext> file_system_context,
  28     const GURL& origin_url,
  29     fileapi::FileSystemType file_system_type)
  30     : file_system_context_(file_system_context) {
  31   quota_reservation_ =
  32       file_system_context->CreateQuotaReservationOnFileTaskRunner(
  33           origin_url, file_system_type);
  34 }
  35
  36 // For unit testing only.
  37 QuotaReservation::QuotaReservation(
  38     scoped_refptr<fileapi::QuotaReservation> quota_reservation,
  39     const GURL& /* origin_url */,
  40     fileapi::FileSystemType /* file_system_type */)
  41     : quota_reservation_(quota_reservation) {}
  42
  43 QuotaReservation::~QuotaReservation() {
  44   // We should have no open files at this point.
  45   DCHECK(files_.size() == 0);
  46   for (FileMap::iterator it = files_.begin(); it != files_.end(); ++it)
  47     delete it->second;
  48 }
  49
  50 int64_t QuotaReservation::OpenFile(int32_t id,
  51                                    const fileapi::FileSystemURL& url) {
  52   base::FilePath platform_file_path;
  53   if (file_system_context_) {
  54     base::File::Error error =
  55         file_system_context_->operation_runner()->SyncGetPlatformPath(
  56             url, &platform_file_path);
  57     if (error != base::File::FILE_OK) {
  58       NOTREACHED();
  59       return 0;
  60     }
  61   } else {
  62     // For test.
  63     platform_file_path = url.path();
  64   }
  65
  66   scoped_ptr<fileapi::OpenFileHandle> file_handle =
  67       quota_reservation_->GetOpenFileHandle(platform_file_path);
  68   std::pair<FileMap::iterator, bool> insert_result =
  69       files_.insert(std::make_pair(id, file_handle.get()));
  70   if (insert_result.second) {
  71     int64_t max_written_offset = file_handle->GetMaxWrittenOffset();
  72     ignore_result(file_handle.release());
  73     return max_written_offset;
  74   }
  75   NOTREACHED();
  76   return 0;
  77 }
  78
  79 void QuotaReservation::CloseFile(int32_t id,
  80                                  const ppapi::FileGrowth& file_growth) {
  81   FileMap::iterator it = files_.find(id);
  82   if (it != files_.end()) {
  83     it->second->UpdateMaxWrittenOffset(file_growth.max_written_offset);
  84     it->second->AddAppendModeWriteAmount(file_growth.append_mode_write_amount);
  85     delete it->second;
  86     files_.erase(it);
  87   } else {
  88     NOTREACHED();
  89   }
  90 }
  91
  92 void QuotaReservation::ReserveQuota(int64_t amount,
  93                                     const ppapi::FileGrowthMap& file_growths,
  94                                     const ReserveQuotaCallback& callback) {
  95   for (FileMap::iterator it = files_.begin(); it != files_.end(); ++it) {
  96     ppapi::FileGrowthMap::const_iterator growth_it =
  97         file_growths.find(it->first);
  98     if (growth_it != file_growths.end()) {
  99       it->second->UpdateMaxWrittenOffset(growth_it->second.max_written_offset);
 100       it->second->AddAppendModeWriteAmount(
 101           growth_it->second.append_mode_write_amount);
 102     } else {
 103       NOTREACHED();
 104     }
 105   }
 106
 107   quota_reservation_->RefreshReservation(
 108       amount, base::Bind(&QuotaReservation::GotReservedQuota, this, callback));
 109 }
 110
 111 void QuotaReservation::OnClientCrash() { quota_reservation_->OnClientCrash(); }
 112
 113 void QuotaReservation::GotReservedQuota(const ReserveQuotaCallback& callback,
 114                                         base::File::Error error) {
 115   ppapi::FileSizeMap file_sizes;
 116   for (FileMap::iterator it = files_.begin(); it != files_.end(); ++it)
 117     file_sizes[it->first] = it->second->GetMaxWrittenOffset();
 118
 119   if (file_system_context_) {
 120     BrowserThread::PostTask(
 121         BrowserThread::IO,
 122         FROM_HERE,
 123         base::Bind(
 124             callback, quota_reservation_->remaining_quota(), file_sizes));
 125   } else {
 126     // Unit testing code path.
 127     callback.Run(quota_reservation_->remaining_quota(), file_sizes);
 128   }
 129 }
 130
 131 void QuotaReservation::DeleteOnCorrectThread() const {
 132   if (file_system_context_ && !file_system_context_->default_file_task_runner()
 133                                    ->RunsTasksOnCurrentThread()) {
 134     file_system_context_->default_file_task_runner()->DeleteSoon(FROM_HERE,
 135                                                                  this);
 136   } else {
 137     // We're on the right thread to delete, or unit test.
 138     delete this;
 139   }
 140 }
 141
 142 }  // namespace content