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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_ANDROID_SMS_FCM_CONNECTION_ESTABLISHER_H_
#define CHROME_BROWSER_ASH_ANDROID_SMS_FCM_CONNECTION_ESTABLISHER_H_
#include <memory>
#include <string>
#include "base/containers/queue.h"
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "chrome/browser/ash/android_sms/connection_establisher.h"
namespace ash {
namespace android_sms {
// ConnectionEstablisher implementation that initiates an FCM web push
// suscription frin the Android Messages for Web service worker and the
// Tachyon server by dispatching a known message string to it.
class FcmConnectionEstablisher : public ConnectionEstablisher {
public:
explicit FcmConnectionEstablisher(
std::unique_ptr<base::OneShotTimer> retry_timer);
FcmConnectionEstablisher(const FcmConnectionEstablisher&) = delete;
FcmConnectionEstablisher& operator=(const FcmConnectionEstablisher&) = delete;
~FcmConnectionEstablisher() override;
// ConnectionEstablisher:
void EstablishConnection(
const GURL& url,
ConnectionMode connection_mode,
content::ServiceWorkerContext* service_worker_context) override;
void TearDownConnection(
const GURL& url,
content::ServiceWorkerContext* service_worker_context) override;
private:
// This enum is used for logging metrics. It should be kept in sync with
// AndroidSmsFcmMessageType in enums.xml
enum class MessageType {
kStart = 0,
kResume = 1,
kStop = 2,
kMaxValue = kStop,
};
friend std::ostream& operator<<(std::ostream& stream,
const MessageType& message_type);
struct PendingServiceWorkerMessage {
PendingServiceWorkerMessage(
GURL service_worker_scope,
MessageType message_type,
content::ServiceWorkerContext* service_worker_context);
GURL service_worker_scope;
MessageType message_type;
raw_ptr<content::ServiceWorkerContext> service_worker_context;
};
struct InFlightMessage {
explicit InFlightMessage(PendingServiceWorkerMessage message);
PendingServiceWorkerMessage message;
size_t retry_count = 0u;
};
FRIEND_TEST_ALL_PREFIXES(FcmConnectionEstablisherTest,
TestEstablishConnection);
FRIEND_TEST_ALL_PREFIXES(FcmConnectionEstablisherTest,
TestTearDownConnection);
static MessageType GetMessageTypeForConnectionMode(
ConnectionMode connection_mode);
static std::string GetMessageStringForType(MessageType message_type);
void SendMessageToServiceWorkerWithRetries(
const GURL& url,
MessageType message_type,
content::ServiceWorkerContext* service_worker_context);
void ProcessMessageQueue();
void SendInFlightMessage();
void OnMessageDispatchResult(bool status);
std::unique_ptr<base::OneShotTimer> retry_timer_;
std::optional<InFlightMessage> in_flight_message_;
// A queue of messages to be dispatched. Messages are dispatched and retried
// one at a time from this queue.
base::queue<PendingServiceWorkerMessage> message_queue_;
static const char kStartFcmMessage[];
static const char kResumeFcmMessage[];
static const char kStopFcmMessage[];
static const int kMaxRetryCount;
static const base::TimeDelta kRetryDelay;
base::WeakPtrFactory<FcmConnectionEstablisher> weak_ptr_factory_{this};
};
} // namespace android_sms
} // namespace ash
#endif // CHROME_BROWSER_ASH_ANDROID_SMS_FCM_CONNECTION_ESTABLISHER_H_
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