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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 "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/threading/thread.h"
#include "base/synchronization/waitable_event.h"
#include "dbus/bus.h"
#include "dbus/exported_object.h"
namespace base {
class SequencedTaskRunner;
namespace dbus {
class MethodCall;
class MessageWriter;
class Response;
// The test service is used for end-to-end tests. The service runs in a
// separate thread, so it does not interfere the test code that runs in
// the main thread.
// The test service exports an object with methods such as Echo() and
// SlowEcho(). The object has ability to send "Test" signal.
class TestService : public base::Thread {
// Options for the test service.
struct Options {
// NULL by default (i.e. don't use the D-Bus thread).
scoped_refptr<base::SequencedTaskRunner> dbus_task_runner;
// Flags governing parameters of service ownership request.
Bus::ServiceOwnershipOptions request_ownership_options;
// The number of methods we'll export.
static const int kNumMethodsToExport;
explicit TestService(const Options& options);
virtual ~TestService();
// Starts the service in a separate thread.
// Returns true if the thread is started successfully.
bool StartService();
// Waits until the service is started (i.e. all methods are exported).
// Returns true on success.
bool WaitUntilServiceIsStarted() WARN_UNUSED_RESULT;
// Shuts down the service and blocks until it's done.
void ShutdownAndBlock();
// Returns true if the bus has the D-Bus thread.
bool HasDBusThread();
// Sends "Test" signal with the given message from the exported object.
void SendTestSignal(const std::string& message);
// Sends "Test" signal with the given message from the root object ("/").
// This function emulates dbus-send's behavior.
void SendTestSignalFromRoot(const std::string& message);
// Request the ownership of a well-known name "TestService".
// |callback| will be called with the result when an ownership request is
// completed.
void RequestOwnership(base::Callback<void(bool)> callback);
// Release the ownership of the well-known name "TestService".
// |callback| will be called when the ownership has been released.
void ReleaseOwnership(base::Closure callback);
// Returns whether this instance has the name ownership or not.
bool has_ownership() const { return has_ownership_; }
// Helper function for SendTestSignal().
void SendTestSignalInternal(const std::string& message);
// Helper function for SendTestSignalFromRoot.
void SendTestSignalFromRootInternal(const std::string& message);
// Helper function for ShutdownAndBlock().
void ShutdownAndBlockInternal();
// Called when an ownership request is completed.
// |callback| is the callback to be called with the result. |service_name| is
// the requested well-known bus name. |callback| and |service_name| are bound
// when the service requests the ownership. |success| is the result of the
// completed request, and is propagated to |callback|.
void OnOwnership(base::Callback<void(bool)> callback,
const std::string& service_name,
bool success);
// Called when a method is exported.
void OnExported(const std::string& interface_name,
const std::string& method_name,
bool success);
// base::Thread override.
virtual void Run(base::MessageLoop* message_loop) OVERRIDE;
// Exported methods.
// Echos the text message received from the method call.
void Echo(MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
// Echos the text message received from the method call, but sleeps for
// TestTimeouts::tiny_timeout_ms() before returning the response.
void SlowEcho(MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
// Echos the text message received from the method call, but sends its
// response asynchronously after this callback has returned.
void AsyncEcho(MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
// Returns NULL, instead of a valid Response.
void BrokenMethod(MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
// Returns a set of property values for testing.
void GetAllProperties(MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
// Returns a new value of 20 for the Version property when called.
void GetProperty(MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
// Allows the name property to be changed, errors otherwise.
void SetProperty(MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
// Performs an action for testing.
void PerformAction(MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
// Object Manager: returns the set of objects and properties.
void GetManagedObjects(MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
// Add a properties dictionary to a message writer.
void AddPropertiesToWriter(MessageWriter* writer);
// Add a new object to the manager.
void AddObject(const dbus::ObjectPath& object_path);
void AddObjectInternal(const dbus::ObjectPath& object_path);
// Remove an object from the manager.
void RemoveObject(const dbus::ObjectPath& object_path);
void RemoveObjectInternal(const dbus::ObjectPath& object_path);
// Sends a property changed signal for the name property.
void SendPropertyChangedSignal(const std::string& name);
// Helper function for SendPropertyChangedSignal().
void SendPropertyChangedSignalInternal(const std::string& name);
// Helper function for RequestOwnership().
void RequestOwnershipInternal(base::Callback<void(bool)> callback);
// Helper function for ReleaseOwnership().
void ReleaseOwnershipInternal(base::Closure callback);
// Sends the response on completion of the performed action.
void PerformActionResponse(
MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
// Re-requests ownership of the well-known name after releasing it.
void OwnershipReleased(
MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
// Sends the action response after regaining the well-known name.
void OwnershipRegained(
MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender,
bool success);
// Options to use when requesting service ownership.
Bus::ServiceOwnershipOptions request_ownership_options_;
scoped_refptr<base::SequencedTaskRunner> dbus_task_runner_;
base::WaitableEvent on_name_obtained_;
// The number of methods actually exported.
int num_exported_methods_;
// True iff this instance has successfully acquired the name ownership.
bool has_ownership_;
scoped_refptr<Bus> bus_;
ExportedObject* exported_object_;
ExportedObject* exported_object_manager_;
} // namespace dbus