EdColeman commented on code in PR #4459: URL: https://github.com/apache/accumulo/pull/4459#discussion_r1572711663
########## server/base/src/main/java/org/apache/accumulo/server/metrics/MetricsInfoImpl.java: ########## @@ -0,0 +1,340 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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 + * + * https://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 org.apache.accumulo.server.metrics; + +import static org.apache.accumulo.core.conf.Property.GENERAL_ARBITRARY_PROP_PREFIX; +import static org.apache.accumulo.core.spi.metrics.MeterRegistryFactory.METRICS_PROP_SUBSTRING; +import static org.apache.hadoop.util.StringUtils.getTrimmedStrings; + +import java.lang.reflect.InvocationTargetException; +import java.time.Duration; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collection; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.concurrent.locks.Lock; +import java.util.concurrent.locks.ReentrantLock; +import java.util.stream.Collectors; + +import org.apache.accumulo.core.classloader.ClassLoaderUtil; +import org.apache.accumulo.core.conf.AccumuloConfiguration; +import org.apache.accumulo.core.conf.Property; +import org.apache.accumulo.core.metrics.MetricsInfo; +import org.apache.accumulo.core.metrics.MetricsProducer; +import org.apache.accumulo.core.spi.common.ServiceEnvironment; +import org.apache.accumulo.core.util.HostAndPort; +import org.apache.accumulo.server.ServerContext; +import org.apache.accumulo.server.ServiceEnvironmentImpl; +import org.checkerframework.checker.nullness.qual.NonNull; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import com.google.common.annotations.VisibleForTesting; + +import io.micrometer.core.instrument.Meter; +import io.micrometer.core.instrument.MeterRegistry; +import io.micrometer.core.instrument.Metrics; +import io.micrometer.core.instrument.Tag; +import io.micrometer.core.instrument.binder.jvm.ClassLoaderMetrics; +import io.micrometer.core.instrument.binder.jvm.JvmGcMetrics; +import io.micrometer.core.instrument.binder.jvm.JvmMemoryMetrics; +import io.micrometer.core.instrument.binder.jvm.JvmThreadMetrics; +import io.micrometer.core.instrument.binder.system.ProcessorMetrics; +import io.micrometer.core.instrument.composite.CompositeMeterRegistry; +import io.micrometer.core.instrument.config.MeterFilter; +import io.micrometer.core.instrument.distribution.DistributionStatisticConfig; + +public class MetricsInfoImpl implements MetricsInfo { + + private static final Logger LOG = LoggerFactory.getLogger(MetricsInfoImpl.class); + + private final ServerContext context; + + private final Lock lock = new ReentrantLock(); + + private final Map<String,Tag> commonTags; + + // JvmGcMetrics are declared with AutoCloseable - keep reference to use with close() + private JvmGcMetrics jvmGcMetrics; + + private final boolean metricsEnabled; + + private CompositeMeterRegistry composite = null; + private final List<MeterRegistry> pendingRegistries = new ArrayList<>(); + + private final List<MetricsProducer> producers = new ArrayList<>(); + + public MetricsInfoImpl(final ServerContext context) { + this.context = context; + printMetricsConfig(); + metricsEnabled = context.getConfiguration().getBoolean(Property.GENERAL_MICROMETER_ENABLED); + commonTags = new HashMap<>(); + Tag t = MetricsInfo.instanceNameTag(context.getInstanceName()); + commonTags.put(t.getKey(), t); + } + + private void printMetricsConfig() { + final boolean micrometerEnabled = + context.getConfiguration().getBoolean(Property.GENERAL_MICROMETER_ENABLED); + final boolean jvmMetricsEnabled = + context.getConfiguration().getBoolean(Property.GENERAL_MICROMETER_JVM_METRICS_ENABLED); + LOG.info("micrometer metrics enabled: {}", micrometerEnabled); + if (jvmMetricsEnabled) { + if (micrometerEnabled) { + LOG.info("detailed jvm metrics enabled: {}", jvmMetricsEnabled); + } else { + LOG.info("requested jvm metrics, but micrometer metrics are disabled."); + } + } + if (micrometerEnabled) { + LOG.info("metrics registry factories: {}", + context.getConfiguration().get(Property.GENERAL_MICROMETER_FACTORY)); + } + } + + @Override + public boolean metricsEnabled() { + return metricsEnabled; + } + + /** + * Common tags for all services. + */ + @Override + public void addServiceTags(final String applicationName, final HostAndPort hostAndPort) { + List<Tag> tags = new ArrayList<>(); + + if (applicationName != null && !applicationName.isEmpty()) { + tags.add(MetricsInfo.processTag(applicationName)); + } + if (hostAndPort != null) { + tags.addAll(MetricsInfo.addressTags(hostAndPort)); + } + addCommonTags(tags); + } + + @Override + public void addCommonTags(List<Tag> updates) { + lock.lock(); + try { + if (composite != null) { + LOG.warn( + "Common tags after registry has been initialized may be ignored. Current common tags: {}", + commonTags); + return; + } + updates.forEach(t -> commonTags.put(t.getKey(), t)); + } finally { + lock.unlock(); + } + } + + @Override + public Collection<Tag> getCommonTags() { + lock.lock(); + try { + return Collections.unmodifiableCollection(commonTags.values()); + } finally { + lock.unlock(); + } + } + + @Override + public void addRegistry(MeterRegistry registry) { + lock.lock(); + try { + if (composite != null) { + composite.add(registry); + } else { + // defer until composite is initialized + pendingRegistries.add(registry); + } + + } finally { + lock.unlock(); + } + } + + @Override + public void addMetricsProducers(MetricsProducer... producer) { + lock.lock(); + try { + if (composite == null) { + producers.addAll(Arrays.asList(producer)); + } else { + Arrays.stream(producer).forEach(p -> p.registerMetrics(composite)); + } + } finally { + lock.unlock(); + } + } + + @Override + public MeterRegistry getRegistry() { + lock.lock(); + try { + if (composite == null) { + throw new IllegalStateException("metrics have not been initialized, call init() first"); + } + } finally { + lock.unlock(); + } + return composite; + } + + @Override + public void init() { + lock.lock(); + try { + if (composite != null) { + LOG.warn("metrics registry has already been initialized"); + return; + } + composite = new CompositeMeterRegistry(); + composite.config().commonTags(commonTags.values()); + + LOG.info("Metrics initialization. common tags: {}", commonTags); + + boolean jvmMetricsEnabled = + context.getConfiguration().getBoolean(Property.GENERAL_MICROMETER_JVM_METRICS_ENABLED); + + if (jvmMetricsEnabled) { + LOG.info("enabling detailed jvm, classloader, jvm gc and process metrics"); + new ClassLoaderMetrics().bindTo(composite); + new JvmMemoryMetrics().bindTo(composite); + jvmGcMetrics = new JvmGcMetrics(); + jvmGcMetrics.bindTo(composite); + new ProcessorMetrics().bindTo(composite); + new JvmThreadMetrics().bindTo(composite); + } + + MeterFilter replicationFilter = new MeterFilter() { + @Override + public DistributionStatisticConfig configure(Meter.Id id, + @NonNull DistributionStatisticConfig config) { + if (id.getName().equals("replicationQueue")) { + return DistributionStatisticConfig.builder().percentiles(0.5, 0.75, 0.9, 0.95, 0.99) + .expiry(Duration.ofMinutes(10)).build().merge(config); + } + return config; + } + }; + + if (metricsEnabled()) { + // user specified registries + String userRegistryFactories = + context.getConfiguration().get(Property.GENERAL_MICROMETER_FACTORY); + + for (String factoryName : getTrimmedStrings(userRegistryFactories)) { + try { + MeterRegistry registry = getRegistryFromFactory(factoryName, context); + registry.config().commonTags(commonTags.values()); + registry.config().meterFilter(replicationFilter); + addRegistry(registry); + } catch (ClassNotFoundException | NoSuchMethodException | InvocationTargetException + | InstantiationException | IllegalAccessException ex) { + LOG.warn("Could not load registry {}", factoryName, ex); + } + } + } + + Metrics.globalRegistry.add(composite); + pendingRegistries.forEach(registry -> composite.add(registry)); Review Comment: Addressed in 601f167e80 -- This is an automated message from the Apache Git Service. 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