| // Copyright 2014 The Chromium OS 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 "privetd/cloud_delegate.h" |
| |
| #include <base/bind.h> |
| #include <base/logging.h> |
| #include <base/memory/weak_ptr.h> |
| #include <base/message_loop/message_loop.h> |
| #include <chromeos/errors/error.h> |
| #include <chromeos/variant_dictionary.h> |
| #include <dbus/bus.h> |
| |
| #include "buffet/dbus-proxies.h" |
| #include "privetd/constants.h" |
| #include "privetd/device_delegate.h" |
| #include "privetd/peerd_client.h" |
| |
| namespace privetd { |
| |
| namespace { |
| |
| using chromeos::VariantDictionary; |
| using chromeos::ErrorPtr; |
| |
| const int kMaxSetupRetries = 5; |
| const int kFirstRetryTimeoutMs = 100; |
| |
| class CloudDelegateImpl : public CloudDelegate { |
| public: |
| CloudDelegateImpl(const scoped_refptr<dbus::Bus>& bus, |
| DeviceDelegate* device, |
| const base::Closure& on_changed) |
| : object_manager_{bus}, device_{device}, on_changed_{on_changed} { |
| object_manager_.SetManagerAddedCallback( |
| base::Bind(&CloudDelegateImpl::OnManagerAdded, |
| weak_factory_.GetWeakPtr())); |
| object_manager_.SetManagerRemovedCallback( |
| base::Bind(&CloudDelegateImpl::OnManagerRemoved, |
| weak_factory_.GetWeakPtr())); |
| } |
| |
| ~CloudDelegateImpl() override = default; |
| |
| ConnectionState GetConnectionState() const override { return state_; } |
| |
| SetupState GetSetupState() const override { return setup_state_; } |
| |
| bool Setup(const std::string& ticket_id, const std::string& user) override { |
| if (setup_state_.status == SetupState::kInProgress || |
| object_manager_.GetManagerProxy() == nullptr) |
| return false; |
| VLOG(1) << "GCD Setup started. ticket_id: " << ticket_id |
| << ", user:" << user; |
| setup_state_ = SetupState(SetupState::kInProgress); |
| cloud_id_.clear(); |
| setup_weak_factory_.InvalidateWeakPtrs(); |
| base::MessageLoop::current()->PostDelayedTask( |
| FROM_HERE, base::Bind(&CloudDelegateImpl::CallManagerRegisterDevice, |
| setup_weak_factory_.GetWeakPtr(), ticket_id, 0), |
| base::TimeDelta::FromSeconds(kSetupDelaySeconds)); |
| on_changed_.Run(); |
| // Return true because we tried setup. |
| return true; |
| } |
| |
| std::string GetCloudId() const override { return cloud_id_; } |
| |
| private: |
| void OnManagerAdded(org::chromium::Buffet::ManagerProxy* manager) { |
| manager->SetPropertyChangedCallback( |
| base::Bind(&CloudDelegateImpl::OnManagerPropertyChanged, |
| weak_factory_.GetWeakPtr())); |
| OnManagerPropertyChanged(manager, |
| org::chromium::Buffet::ManagerProxy::StatusName()); |
| // TODO(wiley) Get the device id (cloud_id_) here if we're online |
| } |
| |
| void OnManagerPropertyChanged(org::chromium::Buffet::ManagerProxy* manager, |
| const std::string& property_name) { |
| if (property_name != org::chromium::Buffet::ManagerProxy::StatusName()) |
| return; |
| std::string status{manager->status()}; |
| if (status == "offline") |
| state_ = ConnectionState(ConnectionState::kOffline); |
| else if (status == "cloud_error") |
| state_ = ConnectionState(ConnectionState::kError); |
| else if (status == "unregistered") |
| state_ = ConnectionState(ConnectionState::kUnconfigured); |
| else if (status == "registering") |
| state_ = ConnectionState(ConnectionState::kConnecting); |
| else if (status == "registered") |
| state_ = ConnectionState(ConnectionState::kOnline); |
| else |
| state_ = ConnectionState(ConnectionState::kError); |
| on_changed_.Run(); |
| } |
| |
| void OnManagerRemoved(const dbus::ObjectPath& path) { |
| state_ = ConnectionState(ConnectionState::kOffline); |
| on_changed_.Run(); |
| } |
| |
| void RetryRegister(const std::string& ticket_id, |
| int retries, |
| chromeos::Error* error) { |
| if (retries >= kMaxSetupRetries) { |
| setup_state_ = SetupState(Error::kServerError); |
| return; |
| } |
| base::MessageLoop::current()->PostDelayedTask( |
| FROM_HERE, |
| base::Bind(&CloudDelegateImpl::CallManagerRegisterDevice, |
| setup_weak_factory_.GetWeakPtr(), ticket_id, retries + 1), |
| base::TimeDelta::FromSeconds(kFirstRetryTimeoutMs * (1 << retries))); |
| } |
| |
| void OnRegisterSuccess(const std::string& device_id) { |
| VLOG(1) << "Device registered: " << device_id; |
| cloud_id_ = device_id; |
| setup_state_ = SetupState(SetupState::kSuccess); |
| on_changed_.Run(); |
| } |
| |
| void CallManagerRegisterDevice(const std::string& ticket_id, int retries) { |
| auto manager_proxy = object_manager_.GetManagerProxy(); |
| if (!manager_proxy) { |
| LOG(ERROR) << "Couldn't register because Buffet was offline."; |
| RetryRegister(ticket_id, retries, nullptr); |
| return; |
| } |
| VariantDictionary params{ |
| {"ticket_id", ticket_id}, |
| {"display_name", device_->GetName()}, |
| {"description", device_->GetDescription()}, |
| {"location", device_->GetLocation()}, |
| {"model_id", device_->GetModelId()}, |
| }; |
| manager_proxy->RegisterDeviceAsync( |
| params, |
| base::Bind(&CloudDelegateImpl::OnRegisterSuccess, |
| setup_weak_factory_.GetWeakPtr()), |
| base::Bind(&CloudDelegateImpl::RetryRegister, |
| setup_weak_factory_.GetWeakPtr(), |
| ticket_id, |
| retries)); |
| } |
| |
| org::chromium::Buffet::ObjectManagerProxy object_manager_; |
| |
| DeviceDelegate* device_; |
| |
| base::Closure on_changed_; |
| |
| // Primary state of GCD. |
| ConnectionState state_{ConnectionState::kUnconfigured}; |
| |
| // State of the current or last setup. |
| SetupState setup_state_{SetupState::kNone}; |
| |
| // Cloud ID if device is registered. |
| std::string cloud_id_; |
| |
| // |setup_weak_factory_| tracks the lifetime of callbacks used in connection |
| // with a particular invocation of Setup(). |
| base::WeakPtrFactory<CloudDelegateImpl> setup_weak_factory_{this}; |
| // |weak_factory_| tracks the lifetime of |this|. |
| base::WeakPtrFactory<CloudDelegateImpl> weak_factory_{this}; |
| }; |
| |
| } // namespace |
| |
| CloudDelegate::CloudDelegate() { |
| } |
| |
| CloudDelegate::~CloudDelegate() { |
| } |
| |
| // static |
| std::unique_ptr<CloudDelegate> CloudDelegate::CreateDefault( |
| const scoped_refptr<dbus::Bus>& bus, |
| DeviceDelegate* device, |
| const base::Closure& on_changed) { |
| return std::unique_ptr<CloudDelegateImpl>( |
| new CloudDelegateImpl(bus, device, on_changed)); |
| } |
| |
| } // namespace privetd |