gerrit.onap Code Review - dcaegen2/collectors/hv-ves.git/blob

   1 /*
   2  * ============LICENSE_START=======================================================
   3  * dcaegen2-collectors-veshv
   4  * ================================================================================
   5  * Copyright (C) 2018 NOKIA
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20 package org.onap.dcae.collectors.veshv.main.metrics
  21
  22 import arrow.syntax.function.memoize
  23 import io.micrometer.core.instrument.Counter
  24 import io.micrometer.core.instrument.Timer
  25 import io.micrometer.core.instrument.binder.jvm.ClassLoaderMetrics
  26 import io.micrometer.core.instrument.binder.jvm.JvmGcMetrics
  27 import io.micrometer.core.instrument.binder.jvm.JvmMemoryMetrics
  28 import io.micrometer.core.instrument.binder.jvm.JvmThreadMetrics
  29 import io.micrometer.core.instrument.binder.system.ProcessorMetrics
  30 import io.micrometer.prometheus.PrometheusConfig
  31 import io.micrometer.prometheus.PrometheusMeterRegistry
  32 import org.onap.dcae.collectors.veshv.boundary.Metrics
  33 import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
  34 import org.onap.dcae.collectors.veshv.model.ClientRejectionCause
  35 import org.onap.dcae.collectors.veshv.model.MessageDropCause
  36 import org.onap.dcae.collectors.veshv.model.RoutedMessage
  37 import org.onap.dcae.collectors.veshv.utils.TimeUtils.epochMicroToInstant
  38 import java.time.Duration
  39 import java.time.Instant
  40
  41
  42 /**
  43  * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
  44  * @since June 2018
  45  */
  46 class MicrometerMetrics internal constructor(
  47         private val registry: PrometheusMeterRegistry = PrometheusMeterRegistry(PrometheusConfig.DEFAULT)
  48 ) : Metrics {
  49
  50     private val receivedBytes = registry.counter(name(DATA, RECEIVED, BYTES))
  51     private val receivedMessages = registry.counter(name(MESSAGES, RECEIVED))
  52     private val receivedMessagesPayloadBytes = registry.counter(name(MESSAGES, RECEIVED, PAYLOAD, BYTES))
  53
  54     private val totalConnections = registry.counter(name(CONNECTIONS))
  55     private val disconnections = registry.counter(name(DISCONNECTIONS))
  56
  57     private val processingTime = Timer.builder(name(MESSAGES, PROCESSING, TIME))
  58             .publishPercentileHistogram(true)
  59             .register(registry)
  60     private val totalLatency = Timer.builder(name(MESSAGES, LATENCY))
  61             .publishPercentileHistogram(true)
  62             .register(registry)
  63
  64     private val sentMessages = registry.counter(name(MESSAGES, SENT))
  65     private val sentMessagesByTopic = { topic: String ->
  66         registry.counter(name(MESSAGES, SENT, TOPIC), TOPIC, topic)
  67     }.memoize<String, Counter>()
  68
  69     private val droppedMessages = registry.counter(name(MESSAGES, DROPPED))
  70     private val messagesDroppedByCause = { cause: String ->
  71         registry.counter(name(MESSAGES, DROPPED, CAUSE), CAUSE, cause)
  72     }.memoize<String, Counter>()
  73
  74     private val clientsRejected = registry.counter(name(CLIENTS, REJECTED))
  75     private val clientsRejectedByCause = { cause: String ->
  76         registry.counter(name(CLIENTS, REJECTED, CAUSE), CAUSE, cause)
  77     }.memoize<String, Counter>()
  78
  79     init {
  80
  81         registry.gauge(name(CONNECTIONS, ACTIVE), this) {
  82             (totalConnections.count() - disconnections.count()).coerceAtLeast(0.0)
  83         }
  84
  85         ClassLoaderMetrics().bindTo(registry)
  86         JvmMemoryMetrics().bindTo(registry)
  87         JvmGcMetrics().bindTo(registry)
  88         ProcessorMetrics().bindTo(registry)
  89         JvmThreadMetrics().bindTo(registry)
  90     }
  91
  92     val metricsProvider = MicrometerPrometheusMetricsProvider(registry)
  93
  94     override fun notifyBytesReceived(size: Int) {
  95         receivedBytes.increment(size.toDouble())
  96     }
  97
  98     override fun notifyMessageReceived(msg: WireFrameMessage) {
  99         receivedMessages.increment()
 100         receivedMessagesPayloadBytes.increment(msg.payloadSize.toDouble())
 101     }
 102
 103     override fun notifyMessageSent(msg: RoutedMessage) {
 104         val now = Instant.now()
 105         sentMessages.increment()
 106         sentMessagesByTopic(msg.topic).increment()
 107
 108         processingTime.record(Duration.between(msg.message.wtpFrame.receivedAt, now))
 109         totalLatency.record(Duration.between(epochMicroToInstant(msg.message.header.lastEpochMicrosec), now))
 110     }
 111
 112     override fun notifyMessageDropped(cause: MessageDropCause) {
 113         droppedMessages.increment()
 114         messagesDroppedByCause(cause.tag).increment()
 115     }
 116
 117     override fun notifyClientRejected(cause: ClientRejectionCause) {
 118         clientsRejected.increment()
 119         clientsRejectedByCause(cause.tag).increment()
 120     }
 121
 122     override fun notifyClientConnected() {
 123         totalConnections.increment()
 124     }
 125
 126     override fun notifyClientDisconnected() {
 127         disconnections.increment()
 128     }
 129
 130     companion object {
 131         val INSTANCE = MicrometerMetrics()
 132         internal const val PREFIX = "hvves"
 133         internal const val MESSAGES = "messages"
 134         internal const val RECEIVED = "received"
 135         internal const val DISCONNECTIONS = "disconnections"
 136         internal const val CONNECTIONS = "connections"
 137         internal const val ACTIVE = "active"
 138         internal const val BYTES = "bytes"
 139         internal const val DATA = "data"
 140         internal const val SENT = "sent"
 141         internal const val PROCESSING = "processing"
 142         internal const val CAUSE = "cause"
 143         internal const val CLIENTS = "clients"
 144         internal const val REJECTED = "rejected"
 145         internal const val TOPIC = "topic"
 146         internal const val DROPPED = "dropped"
 147         internal const val TIME = "time"
 148         internal const val LATENCY = "latency"
 149         internal const val PAYLOAD = "payload"
 150         internal fun name(vararg name: String) = "$PREFIX.${name.joinToString(".")}"
 151     }
 152 }