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
|
/*
* =========================================================================================
* Copyright © 2013-2014 the kamon project <http://kamon.io/>
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the
* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific language governing permissions
* and limitations under the License.
* =========================================================================================
*/
package kamon.statsd
import akka.actor._
import kamon.Kamon
import kamon.metric._
import kamon.util.ConfigTools.Syntax
import scala.concurrent.duration._
import com.typesafe.config.Config
import akka.event.Logging
import java.net.InetSocketAddress
import java.util.concurrent.TimeUnit.MILLISECONDS
import scala.collection.JavaConverters._
object StatsD extends ExtensionId[StatsDExtension] with ExtensionIdProvider {
override def lookup(): ExtensionId[_ <: Extension] = StatsD
override def createExtension(system: ExtendedActorSystem): StatsDExtension = new StatsDExtension(system)
}
class StatsDExtension(system: ExtendedActorSystem) extends Kamon.Extension {
implicit val as = system
val log = Logging(system, classOf[StatsDExtension])
log.info("Starting the Kamon(StatsD) extension")
private val config = system.settings.config
private val statsDConfig = config.getConfig("kamon.statsd")
val metricsExtension = Kamon.metrics
val tickInterval = metricsExtension.settings.tickInterval
val statsDHost = new InetSocketAddress(statsDConfig.getString("hostname"), statsDConfig.getInt("port"))
val flushInterval = statsDConfig.getFiniteDuration("flush-interval")
val maxPacketSizeInBytes = statsDConfig.getBytes("max-packet-size")
val keyGeneratorFQCN = statsDConfig.getString("metric-key-generator")
val statsDMetricsListener = buildMetricsListener(tickInterval, flushInterval, keyGeneratorFQCN, config)
val subscriptions = statsDConfig.getConfig("subscriptions")
subscriptions.firstLevelKeys.map { subscriptionCategory ⇒
subscriptions.getStringList(subscriptionCategory).asScala.foreach { pattern ⇒
metricsExtension.subscribe(subscriptionCategory, pattern, statsDMetricsListener, permanently = true)
}
}
def buildMetricsListener(tickInterval: FiniteDuration, flushInterval: FiniteDuration, keyGeneratorFQCN: String, config: Config): ActorRef = {
assert(flushInterval >= tickInterval, "StatsD flush-interval needs to be equal or greater to the tick-interval")
val keyGenerator = system.dynamicAccess.createInstanceFor[MetricKeyGenerator](keyGeneratorFQCN, (classOf[Config], config) :: Nil).get
val metricsSender = system.actorOf(StatsDMetricsSender.props(
statsDHost,
maxPacketSizeInBytes,
keyGenerator), "statsd-metrics-sender")
if (flushInterval == tickInterval) {
// No need to buffer the metrics, let's go straight to the metrics sender.
metricsSender
} else {
system.actorOf(TickMetricSnapshotBuffer.props(flushInterval, metricsSender), "statsd-metrics-buffer")
}
}
}
|
