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* Latest synced height per chain * Number of fungible tokens * Number of non-fungible tokens * Number of events
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857 changes: 613 additions & 244 deletions
857
app/src/main/resources/grafana/explorer-backend-overview.json
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113 changes: 113 additions & 0 deletions
113
app/src/main/scala/org/alephium/explorer/cache/MetricCache.scala
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,113 @@ | ||
| // Copyright 2018 The Alephium Authors | ||
| // This file is part of the alephium project. | ||
| // | ||
| // The library is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // The library is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with the library. If not, see <http://www.gnu.org/licenses/>. | ||
|
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| package org.alephium.explorer.cache | ||
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| import scala.collection.immutable.ArraySeq | ||
| import scala.concurrent.{ExecutionContext,Future} | ||
| import scala.concurrent.duration._ | ||
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| import io.prometheus.metrics.core.metrics.Gauge | ||
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| import org.alephium.explorer.persistence.Database | ||
| import org.alephium.explorer.persistence.DBRunner._ | ||
| import org.alephium.explorer.persistence.queries.{EventQueries,TokenQueries} | ||
| import org.alephium.util.Service | ||
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| class MetricCache(database:Database, reloadPeriod: FiniteDuration)(implicit val executionContext:ExecutionContext) extends Service { | ||
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| private val fungibleCount: AsyncReloadingCache[Int] ={ | ||
| AsyncReloadingCache(0, reloadPeriod) { _ => | ||
| run(TokenQueries.countFungibles())(database.databaseConfig).map { count => | ||
| MetricCache.fungibleCountGauge.set(count.toDouble) | ||
| count | ||
| } | ||
| } | ||
| } | ||
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| private val nftCount: AsyncReloadingCache[Int] ={ | ||
| AsyncReloadingCache(0, reloadPeriod) { _ => | ||
| run(TokenQueries.countNFT())(database.databaseConfig).map { count => | ||
| MetricCache.nftCountGauge.set(count.toDouble) | ||
| count | ||
| } | ||
| } | ||
| } | ||
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| private val eventCount: AsyncReloadingCache[Int] ={ | ||
| AsyncReloadingCache(0, reloadPeriod) { _ => | ||
| run(EventQueries.countEvents())(database.databaseConfig).map { count => | ||
| MetricCache.eventCountGauge.set(count.toDouble) | ||
| count | ||
| } | ||
| } | ||
| } | ||
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| def reloadTokenCountIfOverdue():Unit = { | ||
| val _= fungibleCount.get() | ||
| val _= nftCount.get() | ||
| val _= eventCount.get() | ||
| } | ||
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| def reloadEventCountIfOverdue():Unit = { | ||
| val _= fungibleCount.get() | ||
| val _= nftCount.get() | ||
| val _= eventCount.get() | ||
| } | ||
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| override def startSelfOnce(): Future[Unit] = { | ||
| for { | ||
| _<- fungibleCount.expireAndReloadFuture().map(_ => ()) | ||
| _<- nftCount.expireAndReloadFuture().map(_ => ()) | ||
| _<- eventCount.expireAndReloadFuture().map(_ => ()) | ||
| } yield () | ||
| } | ||
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| override def stopSelfOnce(): Future[Unit] = { | ||
| Future.unit | ||
| } | ||
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| override def subServices: ArraySeq[Service] = ArraySeq(database) | ||
| } | ||
| object MetricCache { | ||
| val fungibleCountGauge: Gauge = Gauge | ||
| .builder() | ||
| .name( | ||
| "alephimum_explorer_backend_fungible_count" | ||
| ).help( | ||
| "Number of fungible tokens in the system" | ||
| ) | ||
| .register() | ||
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| val nftCountGauge: Gauge = Gauge | ||
| .builder() | ||
| .name( | ||
| "alephimum_explorer_backend_nft_count" | ||
| ).help( | ||
| "Number of NFT in the system" | ||
| ) | ||
| .register() | ||
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| val eventCountGauge: Gauge = Gauge | ||
| .builder() | ||
| .name( | ||
| "alephimum_explorer_backend_event_count" | ||
| ).help( | ||
| "Number of events in the system" | ||
| ) | ||
| .register() | ||
|
|
||
| } |
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35 changes: 35 additions & 0 deletions
35
app/src/test/scala/org/alephium/explorer/cache/TestMetricCache.scala
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,35 @@ | ||
| // Copyright 2018 The Alephium Authors | ||
| // This file is part of the alephium project. | ||
| // | ||
| // The library is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // The library is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with the library. If not, see <http://www.gnu.org/licenses/>. | ||
|
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| package org.alephium.explorer.cache | ||
|
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| import scala.concurrent.ExecutionContext | ||
| import scala.concurrent.duration._ | ||
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| import org.alephium.explorer.persistence.Database | ||
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| object TestMetricCache { | ||
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| def apply(database: Database)(implicit | ||
| ec: ExecutionContext | ||
| ): MetricCache = | ||
| new MetricCache( | ||
| database= database, | ||
| reloadPeriod = 1.second | ||
| ) | ||
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| } | ||
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