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// Copyright (c) 2012 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/fileapi/chrome_blob_storage_context.h"
#include "base/bind.h"
#include "base/guid.h"
#include "content/public/browser/blob_handle.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.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"
using base::UserDataAdapter;
using storage::BlobStorageContext;
namespace content {
namespace {
const char kBlobStorageContextKeyName[] = "content_blob_storage_context";
class BlobHandleImpl : public BlobHandle {
public:
explicit BlobHandleImpl(scoped_ptr<storage::BlobDataHandle> handle)
: handle_(handle.Pass()) {}
~BlobHandleImpl() override {}
std::string GetUUID() override { return handle_->uuid(); }
private:
scoped_ptr<storage::BlobDataHandle> handle_;
};
} // namespace
ChromeBlobStorageContext::ChromeBlobStorageContext() {}
ChromeBlobStorageContext* ChromeBlobStorageContext::GetFor(
BrowserContext* context) {
if (!context->GetUserData(kBlobStorageContextKeyName)) {
scoped_refptr<ChromeBlobStorageContext> blob =
new ChromeBlobStorageContext();
context->SetUserData(
kBlobStorageContextKeyName,
new UserDataAdapter<ChromeBlobStorageContext>(blob.get()));
// Check first to avoid memory leak in unittests.
if (BrowserThread::IsMessageLoopValid(BrowserThread::IO)) {
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&ChromeBlobStorageContext::InitializeOnIOThread, blob));
}
}
return UserDataAdapter<ChromeBlobStorageContext>::Get(
context, kBlobStorageContextKeyName);
}
void ChromeBlobStorageContext::InitializeOnIOThread() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
context_.reset(new BlobStorageContext());
}
scoped_ptr<BlobHandle> ChromeBlobStorageContext::CreateMemoryBackedBlob(
const char* data, size_t length) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
std::string uuid(base::GenerateGUID());
storage::BlobDataBuilder blob_data_builder(uuid);
blob_data_builder.AppendData(data, length);
scoped_ptr<storage::BlobDataHandle> blob_data_handle =
context_->AddFinishedBlob(&blob_data_builder);
if (!blob_data_handle)
return scoped_ptr<BlobHandle>();
scoped_ptr<BlobHandle> blob_handle(
new BlobHandleImpl(blob_data_handle.Pass()));
return blob_handle.Pass();
}
scoped_ptr<BlobHandle> ChromeBlobStorageContext::CreateFileBackedBlob(
const base::FilePath& path,
int64_t offset,
int64_t size,
const base::Time& expected_modification_time) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
std::string uuid(base::GenerateGUID());
storage::BlobDataBuilder blob_data_builder(uuid);
blob_data_builder.AppendFile(path, offset, size, expected_modification_time);
scoped_ptr<storage::BlobDataHandle> blob_data_handle =
context_->AddFinishedBlob(&blob_data_builder);
if (!blob_data_handle)
return scoped_ptr<BlobHandle>();
scoped_ptr<BlobHandle> blob_handle(
new BlobHandleImpl(blob_data_handle.Pass()));
return blob_handle.Pass();
}
ChromeBlobStorageContext::~ChromeBlobStorageContext() {}
void ChromeBlobStorageContext::DeleteOnCorrectThread() const {
if (BrowserThread::IsMessageLoopValid(BrowserThread::IO) &&
!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
BrowserThread::DeleteSoon(BrowserThread::IO, FROM_HERE, this);
return;
}
delete this;
}
} // namespace content
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