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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
// 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.
#include "chrome/renderer/media/webrtc_logging_agent_impl.h"
#include "base/no_destructor.h"
#include "base/synchronization/lock.h"
#include "base/task/sequenced_task_runner.h"
#include "base/time/time.h"
#include "third_party/blink/public/platform/modules/webrtc/webrtc_logging.h"
namespace chrome {
namespace {
constexpr base::TimeDelta kMinTimeSinceLastLogBufferSend =
base::Milliseconds(100);
constexpr base::TimeDelta kSendLogBufferDelay = base::Milliseconds(200);
// There can be only one registered WebRtcLogMessageDelegate, and so this class
// abstracts away that detail, so that we can set callbacks more than once. It
// also abstracts away the detail of what thread the LogMessage call runs on.
class WebRtcLogMessageDelegateImpl : public blink::WebRtcLogMessageDelegate {
public:
static WebRtcLogMessageDelegateImpl* GetInstance() {
static base::NoDestructor<WebRtcLogMessageDelegateImpl> instance;
return instance.get();
}
void Start(
base::RepeatingCallback<void(mojom::WebRtcLoggingMessagePtr)> callback) {
auto task_runner = base::SequencedTaskRunner::GetCurrentDefault();
{
base::AutoLock locked(lock_);
task_runner_ = task_runner;
callback_ = std::move(callback);
}
blink::InitWebRtcLogging();
}
void Stop() {
{
base::AutoLock locked(lock_);
task_runner_ = nullptr;
callback_.Reset();
}
}
// blink::WebRtcLogMessageDelegate methods:
void LogMessage(const std::string& message) override {
// Called from a random thread.
auto data = mojom::WebRtcLoggingMessage::New(base::Time::Now(), message);
{
base::AutoLock locked(lock_);
if (callback_)
task_runner_->PostTask(FROM_HERE,
base::BindOnce(callback_, std::move(data)));
}
}
WebRtcLogMessageDelegateImpl() { blink::InitWebRtcLoggingDelegate(this); }
private:
~WebRtcLogMessageDelegateImpl() override = default;
base::Lock lock_;
base::RepeatingCallback<void(mojom::WebRtcLoggingMessagePtr)> callback_;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
};
} // namespace
WebRtcLoggingAgentImpl::WebRtcLoggingAgentImpl() = default;
WebRtcLoggingAgentImpl::~WebRtcLoggingAgentImpl() = default;
void WebRtcLoggingAgentImpl::AddReceiver(
mojo::PendingReceiver<mojom::WebRtcLoggingAgent> receiver) {
self_receiver_set_.Add(this, std::move(receiver));
}
void WebRtcLoggingAgentImpl::Start(
mojo::PendingRemote<mojom::WebRtcLoggingClient> pending_client) {
// We only support one client at a time. OK to drop any existing client.
client_.reset();
client_.Bind(std::move(pending_client));
WebRtcLogMessageDelegateImpl::GetInstance()->Start(base::BindRepeating(
&WebRtcLoggingAgentImpl::OnNewMessage, weak_factory_.GetWeakPtr()));
}
void WebRtcLoggingAgentImpl::Stop() {
if (!log_buffer_.empty())
SendLogBuffer();
WebRtcLogMessageDelegateImpl::GetInstance()->Stop();
if (client_) {
client_->OnStopped();
client_.reset();
}
}
void WebRtcLoggingAgentImpl::OnNewMessage(
mojom::WebRtcLoggingMessagePtr message) {
// We may have already been asked to stop.
if (!client_)
return;
log_buffer_.emplace_back(std::move(message));
if (log_buffer_.size() > 1) {
// A delayed task has already been posted for sending the buffer contents.
return;
}
if ((base::TimeTicks::Now() - last_log_buffer_send_) >
kMinTimeSinceLastLogBufferSend) {
SendLogBuffer();
} else {
base::SequencedTaskRunner::GetCurrentDefault()->PostDelayedTask(
FROM_HERE,
base::BindOnce(&WebRtcLoggingAgentImpl::SendLogBuffer,
weak_factory_.GetWeakPtr()),
kSendLogBufferDelay);
}
}
void WebRtcLoggingAgentImpl::SendLogBuffer() {
last_log_buffer_send_ = base::TimeTicks::Now();
if (client_) {
client_->OnAddMessages(std::move(log_buffer_));
} else {
log_buffer_.clear();
}
}
} // namespace chrome
|
