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
|
# frozen_string_literal: true
module Gitlab
module Metrics
module Samplers
class ActionCableSampler < BaseSampler
SAMPLING_INTERVAL_SECONDS = 5
def initialize(interval = SAMPLING_INTERVAL_SECONDS, action_cable: ::ActionCable.server)
super(interval)
@action_cable = action_cable
end
def metrics
@metrics ||= {
active_connections: ::Gitlab::Metrics.gauge(
:action_cable_active_connections, 'Number of ActionCable WS clients currently connected'
),
pool_min_size: ::Gitlab::Metrics.gauge(
:action_cable_pool_min_size, 'Minimum number of worker threads in ActionCable thread pool'
),
pool_max_size: ::Gitlab::Metrics.gauge(
:action_cable_pool_max_size, 'Maximum number of worker threads in ActionCable thread pool'
),
pool_current_size: ::Gitlab::Metrics.gauge(
:action_cable_pool_current_size, 'Current number of worker threads in ActionCable thread pool'
),
pool_largest_size: ::Gitlab::Metrics.gauge(
:action_cable_pool_largest_size, 'Largest number of worker threads observed so far in ActionCable thread pool'
),
pool_completed_tasks: ::Gitlab::Metrics.gauge(
:action_cable_pool_tasks_total, 'Total number of tasks executed in ActionCable thread pool'
),
pool_pending_tasks: ::Gitlab::Metrics.gauge(
:action_cable_pool_pending_tasks, 'Number of tasks waiting to be executed in ActionCable thread pool'
)
}
end
def sample
pool = @action_cable.worker_pool.executor
labels = {
server_mode: server_mode
}
metrics[:active_connections].set(labels, @action_cable.connections.size)
metrics[:pool_min_size].set(labels, pool.min_length)
metrics[:pool_max_size].set(labels, pool.max_length)
metrics[:pool_current_size].set(labels, pool.length)
metrics[:pool_largest_size].set(labels, pool.largest_length)
metrics[:pool_completed_tasks].set(labels, pool.completed_task_count)
metrics[:pool_pending_tasks].set(labels, pool.queue_length)
end
private
def server_mode
Gitlab::ActionCable::Config.in_app? ? 'in-app' : 'standalone'
end
end
end
end
end
|
