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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_RENDERER_WORKER_THREAD_DISPATCHER_H_
#define EXTENSIONS_RENDERER_WORKER_THREAD_DISPATCHER_H_
#include <map>
#include <memory>
#include <optional>
#include <string>
#include "base/synchronization/lock.h"
#include "base/threading/platform_thread.h"
#include "base/values.h"
#include "content/public/renderer/render_thread_observer.h"
#include "content/public/renderer/worker_thread.h"
#include "extensions/common/extension_id.h"
#include "extensions/common/mojom/automation_registry.mojom.h"
#include "extensions/common/mojom/event_dispatcher.mojom.h"
#include "extensions/common/mojom/event_router.mojom.h"
#include "extensions/common/mojom/service_worker_host.mojom.h"
#include "extensions/renderer/native_extension_bindings_system.h"
#include "ipc/ipc_sync_message_filter.h"
#include "mojo/public/cpp/bindings/associated_receiver_set.h"
#include "mojo/public/cpp/bindings/shared_associated_remote.h"
#include "services/accessibility/public/mojom/automation.mojom.h"
namespace base {
class UnguessableToken;
}
namespace blink {
class WebServiceWorkerContextProxy;
}
namespace content {
class RenderThread;
}
namespace extensions {
class NativeExtensionBindingsSystem;
class ScriptContext;
class ServiceWorkerData;
class V8SchemaRegistry;
// Sends and receives IPC in an extension Service Worker.
// TODO(lazyboy): This class should really be a combination of the following
// two:
// 1) A content::WorkerThreadMessageFilter, so that we can receive IPC directly
// on worker thread.
// 2) A thread-safe version of IPC::Sender, so we can safely send IPC from
// worker thread (this TODO formerly referred to content::ThreadSafeSender
// which no longer exists).
class WorkerThreadDispatcher :
public NativeExtensionBindingsSystem::Delegate {
public:
WorkerThreadDispatcher();
WorkerThreadDispatcher(const WorkerThreadDispatcher&) = delete;
WorkerThreadDispatcher& operator=(const WorkerThreadDispatcher&) = delete;
~WorkerThreadDispatcher() override;
// Thread safe.
static WorkerThreadDispatcher* Get();
static NativeExtensionBindingsSystem* GetBindingsSystem();
static V8SchemaRegistry* GetV8SchemaRegistry();
static ScriptContext* GetScriptContext();
static ServiceWorkerData* GetServiceWorkerData();
void Init(content::RenderThread* render_thread);
void AddWorkerData(
blink::WebServiceWorkerContextProxy* proxy,
int64_t service_worker_version_id,
const std::optional<base::UnguessableToken>& activation_sequence,
const blink::ServiceWorkerToken& service_worker_token,
ScriptContext* script_context,
std::unique_ptr<NativeExtensionBindingsSystem> bindings_system);
void RemoveWorkerData(int64_t service_worker_version_id);
// Updates bindings of all Service Workers for `extension_id`, after extension
// permission update.
// Returns whether or not the update request was successfully issued to
// each Service Workers.
bool UpdateBindingsForWorkers(const ExtensionId& extension_id);
// Updates bindings for every extension service worker context, assuming
// changes that can affect API availability.
void UpdateAllServiceWorkerBindings();
// NativeExtensionBindingsSystem::Delegate implementation.
ScriptContextSetIterable* GetScriptContextSet() override;
private:
static void UpdateBindingsOnWorkerThread(
const std::optional<ExtensionId>& extension_id);
// Helper method to update bindings. If `extension_id` is non-null, updates
// only bindings for that extension; otherwise, updates all bindings.
// Returns true if the task to each worker thread posts correctly.
bool UpdateBindingsHelper(const std::optional<ExtensionId>& extension_id);
using IDToTaskRunnerMap = std::map<int, base::TaskRunner*>;
IDToTaskRunnerMap task_runner_map_;
base::Lock task_runner_map_lock_;
};
} // namespace extensions
#endif // EXTENSIONS_RENDERER_WORKER_THREAD_DISPATCHER_H_
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