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content / renderer / service_worker / service_worker_provider_context.h [blame]
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_RENDERER_SERVICE_WORKER_SERVICE_WORKER_PROVIDER_CONTEXT_H_
#define CONTENT_RENDERER_SERVICE_WORKER_SERVICE_WORKER_PROVIDER_CONTEXT_H_
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "base/gtest_prod_util.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
#include "mojo/public/cpp/bindings/associated_receiver.h"
#include "mojo/public/cpp/bindings/associated_remote.h"
#include "mojo/public/cpp/bindings/pending_associated_receiver.h"
#include "mojo/public/cpp/bindings/pending_associated_remote.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/network/public/mojom/url_loader_factory.mojom.h"
#include "third_party/blink/public/mojom/service_worker/controller_service_worker.mojom-shared.h"
#include "third_party/blink/public/mojom/service_worker/controller_service_worker.mojom.h"
#include "third_party/blink/public/mojom/service_worker/service_worker_container.mojom.h"
#include "third_party/blink/public/mojom/service_worker/service_worker_container_type.mojom-forward.h"
#include "third_party/blink/public/mojom/service_worker/service_worker_object.mojom-forward.h"
#include "third_party/blink/public/mojom/service_worker/service_worker_provider.mojom.h"
#include "third_party/blink/public/mojom/service_worker/service_worker_registration.mojom-forward.h"
#include "third_party/blink/public/mojom/service_worker/service_worker_worker_client_registry.mojom.h"
#include "third_party/blink/public/mojom/use_counter/metrics/web_feature.mojom-forward.h"
#include "third_party/blink/public/platform/modules/service_worker/web_service_worker_provider_client.h"
#include "third_party/blink/public/platform/modules/service_worker/web_service_worker_provider_context.h"
namespace base {
class SingleThreadTaskRunner;
} // namespace base
namespace network {
namespace mojom {
class URLLoaderFactory;
} // namespace mojom
class SharedURLLoaderFactory;
class WeakWrapperSharedURLLoaderFactory;
} // namespace network
namespace content {
namespace service_worker_provider_context_unittest {
class ServiceWorkerProviderContextTest;
FORWARD_DECLARE_TEST(ServiceWorkerProviderContextTest,
SetControllerServiceWorker);
FORWARD_DECLARE_TEST(ServiceWorkerProviderContextTest,
ControllerWithoutFetchHandler);
} // namespace service_worker_provider_context_unittest
class WebServiceWorkerProviderImpl;
struct ServiceWorkerProviderContextDeleter;
// ServiceWorkerProviderContext stores common state for "providers" for service
// worker clients (currently WebServiceWorkerProviderImpl and
// ServiceWorkerNetworkProviderForFrame). Providers for the same underlying
// entity hold strong references to a shared instance of this class.
//
// ServiceWorkerProviderContext is also a
// blink::mojom::ServiceWorkerWorkerClientRegistry. If it's a provider for a
// document, then it tracks all the dedicated workers created from the document
// (including nested workers), as dedicated workers don't yet have their own
// providers. If it's a provider for a shared worker, then it tracks only the
// shared worker itself.
//
// Created and destructed on the main thread. Unless otherwise noted, all
// methods are called on the main thread.
class CONTENT_EXPORT ServiceWorkerProviderContext
: public base::RefCountedThreadSafe<ServiceWorkerProviderContext,
ServiceWorkerProviderContextDeleter>,
public blink::WebServiceWorkerProviderContext,
public blink::mojom::ServiceWorkerContainer,
public blink::mojom::ServiceWorkerWorkerClientRegistry {
public:
// |receiver| is connected to the content::ServiceWorkerContainerHost that
// notifies of changes to the registration's and workers' status.
//
// |controller_info| contains the endpoint and object info that is needed to
// set up the controller service worker for the context.
//
// |fallback_loader_factory| is a default loader factory for fallback
// requests, and is used when we create a subresource loader for controllees.
// This is non-null only if the provider is created for controllees, and if
// the loading context, e.g. a frame, provides it.
ServiceWorkerProviderContext(
blink::mojom::ServiceWorkerContainerType container_type,
mojo::PendingAssociatedReceiver<blink::mojom::ServiceWorkerContainer>
receiver,
mojo::PendingAssociatedRemote<blink::mojom::ServiceWorkerContainerHost>
host_remote,
blink::mojom::ControllerServiceWorkerInfoPtr controller_info,
scoped_refptr<network::SharedURLLoaderFactory> fallback_loader_factory);
ServiceWorkerProviderContext(const ServiceWorkerProviderContext&) = delete;
ServiceWorkerProviderContext& operator=(const ServiceWorkerProviderContext&) =
delete;
blink::mojom::ServiceWorkerContainerType container_type() const {
return container_type_;
}
// Returns version id of the controller service worker object
// (ServiceWorkerContainer#controller).
int64_t GetControllerVersionId() const;
// Takes the controller service worker object info set by SetController() if
// any, otherwise returns nullptr.
blink::mojom::ServiceWorkerObjectInfoPtr TakeController();
// Returns the factory for loading subresources with the controller
// ServiceWorker, or nullptr if no controller is attached. Returns a
// WeakWrapperSharedURLLoaderFactory because the inner factory is destroyed
// when this context is destroyed but loaders may persist a reference to the
// loader returned from this method.
scoped_refptr<network::WeakWrapperSharedURLLoaderFactory>
GetSubresourceLoaderFactory();
// Returns the feature usage of the controller service worker.
const std::set<blink::mojom::WebFeature>& used_features() const;
// For providers for frames. See |fetch_request_window_id| in
// network::ResourceRequest.
const base::UnguessableToken& fetch_request_window_id() const;
// Sets a weak pointer back to the WebServiceWorkerProviderImpl (which
// corresponds to ServiceWorkerContainer in JavaScript) which has a strong
// reference to |this|. This allows us to notify the
// WebServiceWorkerProviderImpl when ServiceWorkerContainer#controller should
// be changed.
void SetWebServiceWorkerProvider(
base::WeakPtr<WebServiceWorkerProviderImpl> provider);
// blink::mojom::ServiceWorkerWorkerClientRegistry:
void RegisterWorkerClient(
mojo::PendingRemote<blink::mojom::ServiceWorkerWorkerClient>
pending_client) override;
void CloneWorkerClientRegistry(
mojo::PendingReceiver<blink::mojom::ServiceWorkerWorkerClientRegistry>
receiver) override;
// Called when WebServiceWorkerNetworkProvider is destructed. This function
// severs the Mojo binding to the browser-side ServiceWorkerContainerHost. The
// reason WebServiceWorkerNetworkProvider is special compared to the other
// providers, is that it is destructed synchronously when a service worker
// client (Document) is removed from the DOM. Once this happens, the
// ServiceWorkerContainerHost must destruct quickly in order to remove the
// ServiceWorkerClient from the system (thus allowing unregistration/update to
// occur and ensuring the Clients API doesn't return the client).
//
// TODO(crbug.com/41441021): Remove this weird partially destroyed
// state.
void OnNetworkProviderDestroyed();
// May be nullptr if OnNetworkProviderDestroyed() has already been called.
// Currently this can be called only for clients that are Documents,
// see comments of |container_host_|.
blink::mojom::ServiceWorkerContainerHost* container_host() const;
// Called when blink::IdlenessDetector emits its network idle signal. Tells
// the browser process that this page is quiet soon after page load, as a
// hint to start the service worker update check.
void DispatchNetworkQuiet();
// Tells the container host that this context is execution ready:
// https://html.spec.whatwg.org/multipage/webappapis.html#concept-environment-execution-ready-flag
void NotifyExecutionReady();
// WebServiceWorkerProviderContext implementation.
void BindServiceWorkerWorkerClientRemote(
blink::CrossVariantMojoRemote<
blink::mojom::ServiceWorkerWorkerClientInterfaceBase> pending_client)
override;
void BindServiceWorkerWorkerClientRegistryReceiver(
blink::CrossVariantMojoReceiver<
blink::mojom::ServiceWorkerWorkerClientRegistryInterfaceBase>
receiver) override;
blink::CrossVariantMojoRemote<
blink::mojom::ServiceWorkerContainerHostInterfaceBase>
CloneRemoteContainerHost() override;
// SetController must be called before these functions.
blink::mojom::ControllerServiceWorkerMode GetControllerServiceWorkerMode()
const override;
blink::mojom::ServiceWorkerFetchHandlerType GetFetchHandlerType()
const override;
blink::mojom::ServiceWorkerFetchHandlerBypassOption
GetFetchHandlerBypassOption() const override;
const blink::WebString client_id() const override;
private:
friend class base::DeleteHelper<ServiceWorkerProviderContext>;
friend class base::RefCountedThreadSafe<ServiceWorkerProviderContext,
ServiceWorkerProviderContextDeleter>;
friend class service_worker_provider_context_unittest::
ServiceWorkerProviderContextTest;
friend struct ServiceWorkerProviderContextDeleter;
FRIEND_TEST_ALL_PREFIXES(service_worker_provider_context_unittest::
ServiceWorkerProviderContextTest,
SetControllerServiceWorker);
FRIEND_TEST_ALL_PREFIXES(service_worker_provider_context_unittest::
ServiceWorkerProviderContextTest,
ControllerWithoutFetchHandler);
~ServiceWorkerProviderContext() override;
void DestructOnMainThread() const;
// Clears the information of the ServiceWorkerWorkerClient of dedicated (or
// shared) worker, when the connection to the worker is disconnected.
void UnregisterWorkerFetchContext(blink::mojom::ServiceWorkerWorkerClient*);
// Implementation of blink::mojom::ServiceWorkerContainer.
void SetController(
blink::mojom::ControllerServiceWorkerInfoPtr controller_info,
bool should_notify_controllerchange) override;
void PostMessageToClient(blink::mojom::ServiceWorkerObjectInfoPtr source,
blink::TransferableMessage message) override;
void CountFeature(blink::mojom::WebFeature feature) override;
// A convenient utility method to tell if a subresource loader factory
// can be created for this context.
bool CanCreateSubresourceLoaderFactory() const;
// Returns URLLoaderFactory for loading subresources with the controller
// ServiceWorker, or nullptr.
//
// If the router evaluation is needed, this function always returns
// URLLoaderFactory for subresources. the URLLoaderFactory can be created
// without the controller ServiceWorker if |remote_controller_| is null, that
// happens when there is no fetch handler. This behavior is needed because the
// router evaluation is done in the ServiceWorkerSubresourceLoader.
//
// If the router evaluation is not needed, this function returns nullptr if no
// controller is attached (e.g. no fetch handler), or the fetch handler
// is no-op.
network::mojom::URLLoaderFactory* GetSubresourceLoaderFactoryInternal();
const blink::mojom::ServiceWorkerContainerType container_type_;
scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
// This keeps the connection to the content::ServiceWorkerContainerHost in the
// browser process alive.
mojo::AssociatedReceiver<blink::mojom::ServiceWorkerContainer> receiver_;
// The |container_host_| remote represents the connection to the
// browser-side ServiceWorkerContainerHost, whose lifetime is bound to
// |container_host_| via the Mojo connection. This may be nullptr if the Mojo
// connection was broken in OnNetworkProviderDestroyed().
//
// The |container_host_| remote also implements functions for
// navigator.serviceWorker, but all the methods that correspond to
// navigator.serviceWorker.* can be used only if |this| is a provider
// for a Document, as navigator.serviceWorker is currently only implemented
// for Document (https://crbug.com/371690).
// Note: Currently this is always bound on main thread.
mojo::AssociatedRemote<blink::mojom::ServiceWorkerContainerHost>
container_host_;
// |controller_| will be set by SetController() and taken by TakeController().
blink::mojom::ServiceWorkerObjectInfoPtr controller_;
// Keeps version id of the current controller service worker object.
int64_t controller_version_id_ = blink::mojom::kInvalidServiceWorkerVersionId;
// Used to intercept requests from the controllee and dispatch them
// as events to the controller ServiceWorker.
mojo::Remote<network::mojom::URLLoaderFactory> subresource_loader_factory_;
// Used when we create |subresource_loader_factory_|.
scoped_refptr<network::SharedURLLoaderFactory> fallback_loader_factory_;
// Used to ensure handed out loader factories are properly detached when the
// contained subresource_loader_factory goes away.
scoped_refptr<network::WeakWrapperSharedURLLoaderFactory>
weak_wrapped_subresource_loader_factory_;
// The Client#id value for this context.
std::string client_id_;
// Corresponds to a request's "window" in the Fetch spec:
// https://fetch.spec.whatwg.org/#concept-request-window
base::UnguessableToken fetch_request_window_id_;
blink::mojom::ControllerServiceWorkerMode controller_mode_ =
blink::mojom::ControllerServiceWorkerMode::kNoController;
blink::mojom::ServiceWorkerFetchHandlerType fetch_handler_type_ =
blink::mojom::ServiceWorkerFetchHandlerType::kNoHandler;
bool need_router_evaluate_ = false;
blink::mojom::ServiceWorkerFetchHandlerBypassOption
fetch_handler_bypass_option_ =
blink::mojom::ServiceWorkerFetchHandlerBypassOption::kDefault;
std::optional<std::string> sha256_script_checksum_;
std::optional<blink::ServiceWorkerRouterRules> router_rules_;
// TODO(crbug.com/40941292): It may be better to make this an optional, so it
// is possible to distinguish between unset and kStopped, which are not really
// equivalent.
blink::EmbeddedWorkerStatus initial_running_status_ =
blink::EmbeddedWorkerStatus::kStopped;
mojo::PendingRemote<blink::mojom::CacheStorage> remote_cache_storage_;
mojo::PendingReceiver<blink::mojom::ServiceWorkerRunningStatusCallback>
running_status_receiver_;
// Tracks feature usage for UseCounter.
std::set<blink::mojom::WebFeature> used_features_;
// Corresponds to this context's ServiceWorkerContainer. May be null when not
// yet created, when already destroyed, or when this client is not a Document
// and therefore doesn't support navigator.serviceWorker.
base::WeakPtr<WebServiceWorkerProviderImpl> web_service_worker_provider_;
// Remotes for dedicated or shared workers which are associated with the
// ServiceWorkerProviderContext.
// - If this ServiceWorkerProviderContext is for a Document, then
// |worker_clients| contains all its dedicated workers.
// - If this ServiceWorkerProviderContext is for a SharedWorker (technically
// speaking, for its shadow page), then |worker_clients| has one element:
// the shared worker.
std::vector<mojo::Remote<blink::mojom::ServiceWorkerWorkerClient>>
worker_clients_;
// For adding new ServiceWorkerWorkerClients.
mojo::ReceiverSet<blink::mojom::ServiceWorkerWorkerClientRegistry>
worker_client_registry_receivers_;
// Used in |subresource_loader_factory_| to get the connection to the
// controller service worker.
//
// |remote_controller_| is a Mojo pipe to the controller service worker,
// and is to be passed to (i.e. taken by) a subresource loader factory when
// GetSubresourceLoaderFactory() is called for the first time when a valid
// controller exists.
//
// |controller_connector_| is a Mojo pipe to the
// ControllerServiceWorkerConnector that is attached to the newly created
// subresource loader factory and lives on a background thread. This is
// populated when GetSubresourceLoader() creates the subresource loader
// factory and takes |controller_endpoint_|.
mojo::PendingRemote<blink::mojom::ControllerServiceWorker> remote_controller_;
mojo::Remote<blink::mojom::ControllerServiceWorkerConnector>
controller_connector_;
bool sent_execution_ready_ = false;
};
struct ServiceWorkerProviderContextDeleter {
static void Destruct(const ServiceWorkerProviderContext* context) {
context->DestructOnMainThread();
}
};
} // namespace content
#endif // CONTENT_RENDERER_SERVICE_WORKER_SERVICE_WORKER_PROVIDER_CONTEXT_H_