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 "storage/browser/fileapi/file_system_operation_runner.h"
11 #include "storage/browser/fileapi/quota/open_file_handle.h"
12 #include "storage/browser/fileapi/quota/quota_reservation.h"
13 #include "storage/common/fileapi/file_system_util.h"
14
15 namespace content {
16
17 // static
Create(scoped_refptr<storage::FileSystemContext> file_system_context,const GURL & origin_url,storage::FileSystemType type)18 scoped_refptr<QuotaReservation> QuotaReservation::Create(
19 scoped_refptr<storage::FileSystemContext> file_system_context,
20 const GURL& origin_url,
21 storage::FileSystemType type) {
22 return scoped_refptr<QuotaReservation>(
23 new QuotaReservation(file_system_context, origin_url, type));
24 }
25
QuotaReservation(scoped_refptr<storage::FileSystemContext> file_system_context,const GURL & origin_url,storage::FileSystemType file_system_type)26 QuotaReservation::QuotaReservation(
27 scoped_refptr<storage::FileSystemContext> file_system_context,
28 const GURL& origin_url,
29 storage::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.
QuotaReservation(scoped_refptr<storage::QuotaReservation> quota_reservation,const GURL &,storage::FileSystemType)37 QuotaReservation::QuotaReservation(
38 scoped_refptr<storage::QuotaReservation> quota_reservation,
39 const GURL& /* origin_url */,
40 storage::FileSystemType /* file_system_type */)
41 : quota_reservation_(quota_reservation) {
42 }
43
~QuotaReservation()44 QuotaReservation::~QuotaReservation() {
45 // We should have no open files at this point.
46 DCHECK(files_.size() == 0);
47 for (FileMap::iterator it = files_.begin(); it != files_.end(); ++it)
48 delete it->second;
49 }
50
OpenFile(int32_t id,const storage::FileSystemURL & url)51 int64_t QuotaReservation::OpenFile(int32_t id,
52 const storage::FileSystemURL& url) {
53 base::FilePath platform_file_path;
54 if (file_system_context_.get()) {
55 base::File::Error error =
56 file_system_context_->operation_runner()->SyncGetPlatformPath(
57 url, &platform_file_path);
58 if (error != base::File::FILE_OK) {
59 NOTREACHED();
60 return 0;
61 }
62 } else {
63 // For test.
64 platform_file_path = url.path();
65 }
66
67 scoped_ptr<storage::OpenFileHandle> file_handle =
68 quota_reservation_->GetOpenFileHandle(platform_file_path);
69 std::pair<FileMap::iterator, bool> insert_result =
70 files_.insert(std::make_pair(id, file_handle.get()));
71 if (insert_result.second) {
72 int64_t max_written_offset = file_handle->GetMaxWrittenOffset();
73 ignore_result(file_handle.release());
74 return max_written_offset;
75 }
76 NOTREACHED();
77 return 0;
78 }
79
CloseFile(int32_t id,const ppapi::FileGrowth & file_growth)80 void QuotaReservation::CloseFile(int32_t id,
81 const ppapi::FileGrowth& file_growth) {
82 FileMap::iterator it = files_.find(id);
83 if (it != files_.end()) {
84 it->second->UpdateMaxWrittenOffset(file_growth.max_written_offset);
85 it->second->AddAppendModeWriteAmount(file_growth.append_mode_write_amount);
86 delete it->second;
87 files_.erase(it);
88 } else {
89 NOTREACHED();
90 }
91 }
92
ReserveQuota(int64_t amount,const ppapi::FileGrowthMap & file_growths,const ReserveQuotaCallback & callback)93 void QuotaReservation::ReserveQuota(int64_t amount,
94 const ppapi::FileGrowthMap& file_growths,
95 const ReserveQuotaCallback& callback) {
96 for (FileMap::iterator it = files_.begin(); it != files_.end(); ++it) {
97 ppapi::FileGrowthMap::const_iterator growth_it =
98 file_growths.find(it->first);
99 if (growth_it != file_growths.end()) {
100 it->second->UpdateMaxWrittenOffset(growth_it->second.max_written_offset);
101 it->second->AddAppendModeWriteAmount(
102 growth_it->second.append_mode_write_amount);
103 } else {
104 NOTREACHED();
105 }
106 }
107
108 quota_reservation_->RefreshReservation(
109 amount, base::Bind(&QuotaReservation::GotReservedQuota, this, callback));
110 }
111
OnClientCrash()112 void QuotaReservation::OnClientCrash() { quota_reservation_->OnClientCrash(); }
113
GotReservedQuota(const ReserveQuotaCallback & callback,base::File::Error error)114 void QuotaReservation::GotReservedQuota(const ReserveQuotaCallback& callback,
115 base::File::Error error) {
116 ppapi::FileSizeMap file_sizes;
117 for (FileMap::iterator it = files_.begin(); it != files_.end(); ++it)
118 file_sizes[it->first] = it->second->GetMaxWrittenOffset();
119
120 if (file_system_context_.get()) {
121 BrowserThread::PostTask(
122 BrowserThread::IO,
123 FROM_HERE,
124 base::Bind(
125 callback, quota_reservation_->remaining_quota(), file_sizes));
126 } else {
127 // Unit testing code path.
128 callback.Run(quota_reservation_->remaining_quota(), file_sizes);
129 }
130 }
131
DeleteOnCorrectThread() const132 void QuotaReservation::DeleteOnCorrectThread() const {
133 if (file_system_context_.get() &&
134 !file_system_context_->default_file_task_runner()
135 ->RunsTasksOnCurrentThread()) {
136 file_system_context_->default_file_task_runner()->DeleteSoon(FROM_HERE,
137 this);
138 } else {
139 // We're on the right thread to delete, or unit test.
140 delete this;
141 }
142 }
143
144 } // namespace content
145