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.binder.jvm.ClassLoaderMetrics
  25 import io.micrometer.core.instrument.binder.jvm.JvmGcMetrics
  26 import io.micrometer.core.instrument.binder.jvm.JvmMemoryMetrics
  27 import io.micrometer.core.instrument.binder.jvm.JvmThreadMetrics
  28 import io.micrometer.core.instrument.binder.system.ProcessorMetrics
  29 import io.micrometer.prometheus.PrometheusConfig
  30 import io.micrometer.prometheus.PrometheusMeterRegistry
  31 import org.onap.dcae.collectors.veshv.boundary.Metrics
  32 import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
  33 import org.onap.dcae.collectors.veshv.model.ClientRejectionCause
  34 import org.onap.dcae.collectors.veshv.model.MessageDropCause
  35 import org.onap.dcae.collectors.veshv.model.RoutedMessage
  36 import org.onap.dcae.collectors.veshv.utils.TimeUtils.epochMicroToInstant
  37 import java.time.Duration
  38 import java.time.Instant
  39
  40
  41 /**
  42  * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
  43  * @since June 2018
  44  */
  45 class MicrometerMetrics internal constructor(
  46         private val registry: PrometheusMeterRegistry = PrometheusMeterRegistry(PrometheusConfig.DEFAULT)
  47 ) : Metrics {
  48
  49     private val receivedBytes = registry.counter(name(DATA, RECEIVED, BYTES))
  50     private val receivedMsgCount = registry.counter(name(MESSAGES, RECEIVED, COUNT))
  51     private val receivedMsgBytes = registry.counter(name(MESSAGES, RECEIVED, BYTES))
  52
  53     private val connectionsTotalCount = registry.counter(name(CONNECTIONS, TOTAL, COUNT))
  54     private val disconnectionsCount = registry.counter(name(DISCONNECTIONS, COUNT))
  55
  56     private val processingTime = registry.timer(name(MESSAGES, PROCESSING, TIME))
  57     private val totalLatency = registry.timer(name(MESSAGES, LATENCY, TIME))
  58
  59     private val sentCount = registry.counter(name(MESSAGES, SENT, COUNT))
  60     private val sentToTopicCount = { topic: String ->
  61         registry.counter(name(MESSAGES, SENT, TOPIC, COUNT), TOPIC, topic)
  62     }.memoize<String, Counter>()
  63
  64     private val droppedCount = registry.counter(name(MESSAGES, DROPPED, COUNT))
  65     private val droppedCauseCount = { cause: String ->
  66         registry.counter(name(MESSAGES, DROPPED, CAUSE, COUNT), CAUSE, cause)
  67     }.memoize<String, Counter>()
  68
  69     private val clientsRejectedCount = registry.counter(name(CLIENTS, REJECTED, COUNT))
  70     private val clientsRejectedCauseCount = { cause: String ->
  71         registry.counter(name(CLIENTS, REJECTED, CAUSE, COUNT), CAUSE, cause)
  72     }.memoize<String, Counter>()
  73
  74     init {
  75         registry.gauge(name(MESSAGES, PROCESSING, COUNT), this) {
  76             (receivedMsgCount.count() - sentCount.count()).coerceAtLeast(0.0)
  77         }
  78
  79         registry.gauge(name(CONNECTIONS, ACTIVE, COUNT), this) {
  80             (connectionsTotalCount.count() - disconnectionsCount.count()).coerceAtLeast(0.0)
  81         }
  82
  83         ClassLoaderMetrics().bindTo(registry)
  84         JvmMemoryMetrics().bindTo(registry)
  85         JvmGcMetrics().bindTo(registry)
  86         ProcessorMetrics().bindTo(registry)
  87         JvmThreadMetrics().bindTo(registry)
  88     }
  89
  90     val metricsProvider = MicrometerPrometheusMetricsProvider(registry)
  91
  92     override fun notifyBytesReceived(size: Int) {
  93         receivedBytes.increment(size.toDouble())
  94     }
  95
  96     override fun notifyMessageReceived(msg: WireFrameMessage) {
  97         receivedMsgCount.increment()
  98         receivedMsgBytes.increment(msg.payloadSize.toDouble())
  99     }
 100
 101     override fun notifyMessageSent(msg: RoutedMessage) {
 102         val now = Instant.now()
 103         sentCount.increment()
 104         sentToTopicCount(msg.topic).increment()
 105
 106         processingTime.record(Duration.between(msg.message.wtpFrame.receivedAt, now))
 107         totalLatency.record(Duration.between(epochMicroToInstant(msg.message.header.lastEpochMicrosec), now))
 108     }
 109
 110     override fun notifyMessageDropped(cause: MessageDropCause) {
 111         droppedCount.increment()
 112         droppedCauseCount(cause.tag).increment()
 113     }
 114
 115     override fun notifyClientRejected(cause: ClientRejectionCause) {
 116         clientsRejectedCount.increment()
 117         clientsRejectedCauseCount(cause.tag).increment()
 118     }
 119
 120     override fun notifyClientConnected() {
 121         connectionsTotalCount.increment()
 122     }
 123
 124     override fun notifyClientDisconnected() {
 125         disconnectionsCount.increment()
 126     }
 127
 128     companion object {
 129         val INSTANCE = MicrometerMetrics()
 130         internal const val PREFIX = "hvves"
 131         internal const val MESSAGES = "messages"
 132         internal const val RECEIVED = "received"
 133         internal const val DISCONNECTIONS = "disconnections"
 134         internal const val CONNECTIONS = "connections"
 135         internal const val ACTIVE = "active"
 136         internal const val BYTES = "bytes"
 137         internal const val COUNT = "count"
 138         internal const val DATA = "data"
 139         internal const val SENT = "sent"
 140         internal const val PROCESSING = "processing"
 141         internal const val CAUSE = "cause"
 142         internal const val CLIENTS = "clients"
 143         internal const val REJECTED = "rejected"
 144         internal const val TOPIC = "topic"
 145         internal const val DROPPED = "dropped"
 146         internal const val TOTAL = "total"
 147         internal const val TIME = "time"
 148         internal const val LATENCY = "latency"
 149         internal fun name(vararg name: String) = "$PREFIX.${name.joinToString(".")}"
 150     }
 151 }