blob: 1a7dfc33e09fe135665686a8ba79b8011778aaef [file] [log] [blame]
// 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/loader/upload_data_stream_builder.h"
#include "base/logging.h"
#include "net/base/upload_bytes_element_reader.h"
#include "net/base/upload_data_stream.h"
#include "net/base/upload_file_element_reader.h"
#include "webkit/browser/blob/blob_storage_controller.h"
#include "webkit/browser/fileapi/upload_file_system_file_element_reader.h"
#include "webkit/common/resource_request_body.h"
using webkit_blob::BlobData;
using webkit_blob::BlobStorageController;
using webkit_glue::ResourceRequestBody;
namespace content {
namespace {
// A subclass of net::UploadBytesElementReader which owns ResourceRequestBody.
class BytesElementReader : public net::UploadBytesElementReader {
public:
BytesElementReader(ResourceRequestBody* resource_request_body,
const ResourceRequestBody::Element& element)
: net::UploadBytesElementReader(element.bytes(), element.length()),
resource_request_body_(resource_request_body) {
DCHECK_EQ(ResourceRequestBody::Element::TYPE_BYTES, element.type());
}
virtual ~BytesElementReader() {}
private:
scoped_refptr<ResourceRequestBody> resource_request_body_;
DISALLOW_COPY_AND_ASSIGN(BytesElementReader);
};
// A subclass of net::UploadFileElementReader which owns ResourceRequestBody.
// This class is necessary to ensure the BlobData and any attached shareable
// files survive until upload completion.
class FileElementReader : public net::UploadFileElementReader {
public:
FileElementReader(ResourceRequestBody* resource_request_body,
base::TaskRunner* task_runner,
const ResourceRequestBody::Element& element)
: net::UploadFileElementReader(task_runner,
element.path(),
element.offset(),
element.length(),
element.expected_modification_time()),
resource_request_body_(resource_request_body) {
DCHECK_EQ(ResourceRequestBody::Element::TYPE_FILE, element.type());
}
virtual ~FileElementReader() {}
private:
scoped_refptr<ResourceRequestBody> resource_request_body_;
DISALLOW_COPY_AND_ASSIGN(FileElementReader);
};
void ResolveBlobReference(
ResourceRequestBody* body,
webkit_blob::BlobStorageController* blob_controller,
const GURL& blob_url,
std::vector<const ResourceRequestBody::Element*>* resolved_elements) {
DCHECK(blob_controller);
BlobData* blob_data = blob_controller->GetBlobDataFromUrl(blob_url);
DCHECK(blob_data);
if (!blob_data)
return;
// If there is no element in the referred blob data, just return.
if (blob_data->items().empty())
return;
// Ensure the blob and any attached shareable files survive until
// upload completion.
body->SetUserData(blob_data, new base::UserDataAdapter<BlobData>(blob_data));
// Append the elements in the referred blob data.
for (size_t i = 0; i < blob_data->items().size(); ++i) {
const BlobData::Item& item = blob_data->items().at(i);
DCHECK_NE(BlobData::Item::TYPE_BLOB, item.type());
resolved_elements->push_back(&item);
}
}
} // namespace
scoped_ptr<net::UploadDataStream> UploadDataStreamBuilder::Build(
ResourceRequestBody* body,
BlobStorageController* blob_controller,
fileapi::FileSystemContext* file_system_context,
base::TaskRunner* file_task_runner) {
// Resolve all blob elements.
std::vector<const ResourceRequestBody::Element*> resolved_elements;
for (size_t i = 0; i < body->elements()->size(); ++i) {
const ResourceRequestBody::Element& element = (*body->elements())[i];
if (element.type() == ResourceRequestBody::Element::TYPE_BLOB) {
ResolveBlobReference(body, blob_controller, element.url(),
&resolved_elements);
} else {
// No need to resolve, just append the element.
resolved_elements.push_back(&element);
}
}
ScopedVector<net::UploadElementReader> element_readers;
for (size_t i = 0; i < resolved_elements.size(); ++i) {
const ResourceRequestBody::Element& element = *resolved_elements[i];
switch (element.type()) {
case ResourceRequestBody::Element::TYPE_BYTES:
element_readers.push_back(new BytesElementReader(body, element));
break;
case ResourceRequestBody::Element::TYPE_FILE:
element_readers.push_back(
new FileElementReader(body, file_task_runner, element));
break;
case ResourceRequestBody::Element::TYPE_FILE_FILESYSTEM:
element_readers.push_back(
new fileapi::UploadFileSystemFileElementReader(
file_system_context,
element.url(),
element.offset(),
element.length(),
element.expected_modification_time()));
break;
case ResourceRequestBody::Element::TYPE_BLOB:
// Blob elements should be resolved beforehand.
NOTREACHED();
break;
case ResourceRequestBody::Element::TYPE_UNKNOWN:
NOTREACHED();
break;
}
}
return make_scoped_ptr(
new net::UploadDataStream(&element_readers, body->identifier()));
}
} // namespace content