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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/renderer_host/pepper/quota_reservation.h"
#include "base/bind.h"
#include "base/callback.h"
#include "content/public/browser/browser_thread.h"
#include "webkit/browser/fileapi/quota/open_file_handle.h"
#include "webkit/browser/fileapi/quota/quota_reservation.h"
#include "webkit/common/fileapi/file_system_util.h"
namespace content {
// static
scoped_refptr<QuotaReservation> QuotaReservation::Create(
scoped_refptr<fileapi::FileSystemContext> file_system_context,
const GURL& origin_url,
fileapi::FileSystemType type) {
return scoped_refptr<QuotaReservation>(new QuotaReservation(
file_system_context, origin_url, type));
}
QuotaReservation::QuotaReservation(
scoped_refptr<fileapi::FileSystemContext> file_system_context,
const GURL& origin_url,
fileapi::FileSystemType file_system_type)
: file_system_context_(file_system_context) {
quota_reservation_ =
file_system_context->CreateQuotaReservationOnFileTaskRunner(
origin_url,
file_system_type);
}
// For unit testing only.
QuotaReservation::QuotaReservation(
scoped_refptr<fileapi::QuotaReservation> quota_reservation,
const GURL& /* origin_url */,
fileapi::FileSystemType /* file_system_type */)
: quota_reservation_(quota_reservation) {
}
QuotaReservation::~QuotaReservation() {
// We should have no open files at this point.
DCHECK(files_.size() == 0);
for (FileMap::iterator it = files_.begin(); it != files_.end(); ++ it)
delete it->second;
}
int64_t QuotaReservation::OpenFile(int32_t id,
const base::FilePath& file_path) {
scoped_ptr<fileapi::OpenFileHandle> file_handle =
quota_reservation_->GetOpenFileHandle(file_path);
std::pair<FileMap::iterator, bool> insert_result =
files_.insert(std::make_pair(id, file_handle.get()));
if (insert_result.second) {
int64_t max_written_offset = file_handle->base_file_size();
ignore_result(file_handle.release());
return max_written_offset;
}
NOTREACHED();
return 0;
}
void QuotaReservation::CloseFile(int32_t id,
int64_t max_written_offset) {
FileMap::iterator it = files_.find(id);
if (it != files_.end()) {
it->second->UpdateMaxWrittenOffset(max_written_offset);
files_.erase(it);
} else {
NOTREACHED();
}
}
void QuotaReservation::ReserveQuota(
int64_t amount,
const OffsetMap& max_written_offsets,
const ReserveQuotaCallback& callback) {
for (FileMap::iterator it = files_.begin(); it != files_.end(); ++ it) {
OffsetMap::const_iterator offset_it = max_written_offsets.find(it->first);
if (offset_it != max_written_offsets.end())
it->second->UpdateMaxWrittenOffset(offset_it->second);
else
NOTREACHED();
}
quota_reservation_->RefreshReservation(
amount,
base::Bind(&QuotaReservation::GotReservedQuota,
this,
callback));
}
void QuotaReservation::GotReservedQuota(
const ReserveQuotaCallback& callback,
base::PlatformFileError error) {
OffsetMap max_written_offsets;
for (FileMap::iterator it = files_.begin(); it != files_.end(); ++ it) {
max_written_offsets.insert(
std::make_pair(it->first, it->second->base_file_size()));
}
if (file_system_context_) {
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(callback,
quota_reservation_->remaining_quota(),
max_written_offsets));
} else {
// Unit testing code path.
callback.Run(quota_reservation_->remaining_quota(), max_written_offsets);
}
}
void QuotaReservation::DeleteOnCorrectThread() const {
if (file_system_context_ &&
!file_system_context_->
default_file_task_runner()->RunsTasksOnCurrentThread()) {
file_system_context_->default_file_task_runner()->DeleteSoon(
FROM_HERE,
this);
} else {
// We're on the right thread to delete, or unit test.
delete this;
}
}
} // namespace content
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