1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
// 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 REMOTING_SIGNALING_MESSAGE_RECEPTION_CHANNEL_H_
#define REMOTING_SIGNALING_MESSAGE_RECEPTION_CHANNEL_H_
#include <memory>
#include "base/functional/callback_forward.h"
#include "remoting/proto/ftl/v1/ftl_messages.pb.h"
namespace remoting {
class HttpStatus;
class ScopedProtobufHttpRequest;
// Interface for starting or closing the server stream to receive messages from
// FTL backend.
class MessageReceptionChannel {
public:
using StreamOpener =
base::RepeatingCallback<std::unique_ptr<ScopedProtobufHttpRequest>(
base::OnceClosure on_channel_ready,
const base::RepeatingCallback<void(
std::unique_ptr<ftl::ReceiveMessagesResponse>)>& on_incoming_msg,
base::OnceCallback<void(const HttpStatus&)> on_channel_closed)>;
using MessageCallback =
base::RepeatingCallback<void(const ftl::InboxMessage& message)>;
using DoneCallback = base::OnceCallback<void(const HttpStatus& status)>;
MessageReceptionChannel() = default;
MessageReceptionChannel(const MessageReceptionChannel&) = delete;
MessageReceptionChannel& operator=(const MessageReceptionChannel&) = delete;
virtual ~MessageReceptionChannel() = default;
virtual void Initialize(const StreamOpener& stream_opener,
const MessageCallback& on_incoming_msg) = 0;
// Opens a server streaming channel to the FTL API to enable message reception
// over the fast path.
// |on_ready| is called once the stream is successfully started.
// |on_closed| is called if the stream fails to start, in which case
// |on_ready| will not be called, or when the stream is closed or dropped,
// in which case it is called after |on_ready| is called.
virtual void StartReceivingMessages(base::OnceClosure on_ready,
DoneCallback on_closed) = 0;
// Closes the streaming channel. Note that |on_closed| callback will be
// silently dropped.
virtual void StopReceivingMessages() = 0;
// Returns true if the streaming channel is open.
virtual bool IsReceivingMessages() const = 0;
};
} // namespace remoting
#endif // REMOTING_SIGNALING_MESSAGE_RECEPTION_CHANNEL_H_
|
