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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/dom_storage/dom_storage_session.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/logging.h"
#include "base/single_thread_task_runner.h"
#include "base/thread_task_runner_handle.h"
#include "base/tracked_objects.h"
#include "content/browser/dom_storage/dom_storage_context_impl.h"
#include "content/browser/dom_storage/dom_storage_task_runner.h"
namespace content {
namespace {
void PostMergeTaskResult(
const SessionStorageNamespace::MergeResultCallback& callback,
SessionStorageNamespace::MergeResult result) {
callback.Run(result);
}
void RunMergeTaskAndPostResult(
const base::Callback<SessionStorageNamespace::MergeResult(void)>& task,
scoped_refptr<base::SingleThreadTaskRunner> result_loop,
const SessionStorageNamespace::MergeResultCallback& callback) {
SessionStorageNamespace::MergeResult result = task.Run();
result_loop->PostTask(
FROM_HERE, base::Bind(&PostMergeTaskResult, callback, result));
}
} // namespace
DOMStorageSession::DOMStorageSession(DOMStorageContextImpl* context)
: context_(context),
namespace_id_(context->AllocateSessionId()),
persistent_namespace_id_(context->AllocatePersistentSessionId()),
should_persist_(false) {
context->task_runner()->PostTask(
FROM_HERE,
base::Bind(&DOMStorageContextImpl::CreateSessionNamespace,
context_, namespace_id_, persistent_namespace_id_));
}
DOMStorageSession::DOMStorageSession(DOMStorageContextImpl* context,
const std::string& persistent_namespace_id)
: context_(context),
namespace_id_(context->AllocateSessionId()),
persistent_namespace_id_(persistent_namespace_id),
should_persist_(false) {
context->task_runner()->PostTask(
FROM_HERE,
base::Bind(&DOMStorageContextImpl::CreateSessionNamespace,
context_, namespace_id_, persistent_namespace_id_));
}
DOMStorageSession::DOMStorageSession(
DOMStorageSession* master_dom_storage_session)
: context_(master_dom_storage_session->context_),
namespace_id_(master_dom_storage_session->context_->AllocateSessionId()),
persistent_namespace_id_(
master_dom_storage_session->persistent_namespace_id()),
should_persist_(false) {
context_->task_runner()->PostTask(
FROM_HERE,
base::Bind(&DOMStorageContextImpl::CreateAliasSessionNamespace,
context_,
master_dom_storage_session->namespace_id(),
namespace_id_,
persistent_namespace_id_));
}
void DOMStorageSession::SetShouldPersist(bool should_persist) {
should_persist_ = should_persist;
}
bool DOMStorageSession::should_persist() const {
return should_persist_;
}
bool DOMStorageSession::IsFromContext(DOMStorageContextImpl* context) {
return context_.get() == context;
}
DOMStorageSession* DOMStorageSession::Clone() {
return CloneFrom(context_.get(), namespace_id_);
}
// static
DOMStorageSession* DOMStorageSession::CloneFrom(DOMStorageContextImpl* context,
int64 namepace_id_to_clone) {
int64 clone_id = context->AllocateSessionId();
std::string persistent_clone_id = context->AllocatePersistentSessionId();
context->task_runner()->PostTask(
FROM_HERE,
base::Bind(&DOMStorageContextImpl::CloneSessionNamespace,
context, namepace_id_to_clone, clone_id, persistent_clone_id));
return new DOMStorageSession(context, clone_id, persistent_clone_id);
}
DOMStorageSession::DOMStorageSession(DOMStorageContextImpl* context,
int64 namespace_id,
const std::string& persistent_namespace_id)
: context_(context),
namespace_id_(namespace_id),
persistent_namespace_id_(persistent_namespace_id),
should_persist_(false) {
// This ctor is intended for use by the Clone() method.
}
DOMStorageSession::~DOMStorageSession() {
context_->task_runner()->PostTask(
FROM_HERE,
base::Bind(&DOMStorageContextImpl::DeleteSessionNamespace,
context_, namespace_id_, should_persist_));
}
void DOMStorageSession::AddTransactionLogProcessId(int process_id) {
context_->task_runner()->PostTask(
FROM_HERE,
base::Bind(&DOMStorageContextImpl::AddTransactionLogProcessId,
context_, namespace_id_, process_id));
}
void DOMStorageSession::RemoveTransactionLogProcessId(int process_id) {
context_->task_runner()->PostTask(
FROM_HERE,
base::Bind(&DOMStorageContextImpl::RemoveTransactionLogProcessId,
context_, namespace_id_, process_id));
}
void DOMStorageSession::Merge(
bool actually_merge,
int process_id,
DOMStorageSession* other,
const SessionStorageNamespace::MergeResultCallback& callback) {
scoped_refptr<base::SingleThreadTaskRunner> current_loop(
base::ThreadTaskRunnerHandle::Get());
SessionStorageNamespace::MergeResultCallback cb =
base::Bind(&DOMStorageSession::ProcessMergeResult,
this,
actually_merge,
callback,
other->persistent_namespace_id());
context_->task_runner()->PostTask(
FROM_HERE,
base::Bind(&RunMergeTaskAndPostResult,
base::Bind(&DOMStorageContextImpl::MergeSessionStorage,
context_, namespace_id_, actually_merge, process_id,
other->namespace_id_),
current_loop,
cb));
}
void DOMStorageSession::ProcessMergeResult(
bool actually_merge,
const SessionStorageNamespace::MergeResultCallback& callback,
const std::string& new_persistent_namespace_id,
SessionStorageNamespace::MergeResult result) {
if (actually_merge &&
(result == SessionStorageNamespace::MERGE_RESULT_MERGEABLE ||
result == SessionStorageNamespace::MERGE_RESULT_NO_TRANSACTIONS)) {
persistent_namespace_id_ = new_persistent_namespace_id;
}
callback.Run(result);
}
} // namespace content
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