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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/download/internal/background_service/blob_task_proxy.h"
#include <utility>
#include "base/functional/bind.h"
#include "base/task/single_thread_task_runner.h"
#include "base/uuid.h"
#include "storage/browser/blob/blob_data_builder.h"
#include "storage/browser/blob/blob_data_handle.h"
#include "storage/browser/blob/blob_storage_context.h"
namespace download {
// static
std::unique_ptr<BlobTaskProxy> BlobTaskProxy::Create(
BlobContextGetter blob_context_getter,
scoped_refptr<base::SingleThreadTaskRunner> io_task_runner) {
return std::make_unique<BlobTaskProxy>(blob_context_getter, io_task_runner);
}
BlobTaskProxy::BlobTaskProxy(
BlobContextGetter blob_context_getter,
scoped_refptr<base::SingleThreadTaskRunner> io_task_runner)
: main_task_runner_(base::SingleThreadTaskRunner::GetCurrentDefault()),
io_task_runner_(io_task_runner) {
// Unretained the raw pointer because owner on UI thread should destroy this
// object on IO thread.
io_task_runner_->PostTask(
FROM_HERE, base::BindOnce(&BlobTaskProxy::InitializeOnIO,
base::Unretained(this), blob_context_getter));
}
BlobTaskProxy::~BlobTaskProxy() {
CHECK(io_task_runner_->BelongsToCurrentThread());
}
void BlobTaskProxy::InitializeOnIO(BlobContextGetter blob_context_getter) {
DCHECK(io_task_runner_->BelongsToCurrentThread());
blob_storage_context_ = blob_context_getter.Run();
}
void BlobTaskProxy::SaveAsBlob(std::unique_ptr<std::string> data,
BlobDataHandleCallback callback) {
// Unretained the raw pointer because owner on UI thread should destroy this
// object on IO thread.
io_task_runner_->PostTask(
FROM_HERE,
base::BindOnce(&BlobTaskProxy::SaveAsBlobOnIO, base::Unretained(this),
std::move(data), std::move(callback)));
}
void BlobTaskProxy::SaveAsBlobOnIO(std::unique_ptr<std::string> data,
BlobDataHandleCallback callback) {
DCHECK(io_task_runner_->BelongsToCurrentThread());
// Build blob data. This has to do a copy into blob's internal storage.
std::string blob_uuid = base::Uuid::GenerateRandomV4().AsLowercaseString();
auto builder = std::make_unique<storage::BlobDataBuilder>(blob_uuid);
builder->AppendData(*data);
blob_data_handle_ =
blob_storage_context_->AddFinishedBlob(std::move(builder));
// Wait for blob data construction complete.
auto cb = base::BindOnce(&BlobTaskProxy::BlobSavedOnIO,
weak_ptr_factory_.GetWeakPtr(), std::move(callback));
blob_data_handle_->RunOnConstructionComplete(std::move(cb));
}
void BlobTaskProxy::BlobSavedOnIO(BlobDataHandleCallback callback,
storage::BlobStatus status) {
DCHECK(io_task_runner_->BelongsToCurrentThread());
// Relay BlobDataHandle and |status| back to main thread.
auto cb =
base::BindOnce(std::move(callback), std::move(blob_data_handle_), status);
main_task_runner_->PostTask(FROM_HERE, std::move(cb));
}
} // namespace download
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