| /* |
| * 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 |
| * |
| * 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 org.apache.geode.internal.cache.execute.metrics; |
| |
| import static org.apache.geode.internal.util.JavaWorkarounds.computeIfAbsent; |
| |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.function.Supplier; |
| |
| import io.micrometer.core.instrument.MeterRegistry; |
| |
| import org.apache.geode.Statistics; |
| import org.apache.geode.StatisticsFactory; |
| import org.apache.geode.annotations.VisibleForTesting; |
| import org.apache.geode.distributed.internal.InternalDistributedSystem; |
| import org.apache.geode.internal.statistics.DummyStatisticsImpl; |
| import org.apache.geode.metrics.internal.NoopMeterRegistry; |
| |
| public class FunctionStatsManager { |
| |
| private final boolean statsDisabled; |
| private final StatisticsFactory statisticsFactory; |
| private final FunctionServiceStats functionServiceStats; |
| private final Supplier<MeterRegistry> meterRegistrySupplier; |
| private final Map<String, FunctionStats> functionExecutionStatsMap; |
| private final Statistics dummyStatistics; |
| private final MeterRegistry noopMeterRegistry; |
| private final FunctionStats dummyFunctionStats; |
| |
| public FunctionStatsManager(boolean statsDisabled, StatisticsFactory statisticsFactory, |
| Supplier<MeterRegistry> meterRegistrySupplier) { |
| this(statsDisabled, statisticsFactory, |
| new FunctionServiceStats(statisticsFactory, "FunctionExecution"), meterRegistrySupplier); |
| } |
| |
| @VisibleForTesting |
| FunctionStatsManager(boolean statsDisabled, StatisticsFactory statisticsFactory, |
| FunctionServiceStats functionServiceStats, Supplier<MeterRegistry> meterRegistrySupplier) { |
| this.statsDisabled = statsDisabled; |
| this.statisticsFactory = statisticsFactory; |
| this.functionServiceStats = functionServiceStats; |
| this.meterRegistrySupplier = meterRegistrySupplier; |
| |
| functionExecutionStatsMap = new ConcurrentHashMap<>(); |
| dummyStatistics = createDummyStatistics(); |
| noopMeterRegistry = createNoopMeterRegistry(); |
| dummyFunctionStats = createDummyFunctionStats(noopMeterRegistry, dummyStatistics); |
| } |
| |
| public FunctionServiceStats getFunctionServiceStats() { |
| return functionServiceStats; |
| } |
| |
| public FunctionStats getFunctionStatsByName(String name) { |
| MeterRegistry meterRegistryFromSupplier = meterRegistrySupplier.get(); |
| |
| if (statsDisabled && meterRegistryFromSupplier == null) { |
| return dummyFunctionStats; |
| } |
| |
| return computeIfAbsent(functionExecutionStatsMap, name, |
| key -> create(key, meterRegistryFromSupplier)); |
| } |
| |
| public void close() { |
| for (FunctionStats functionstats : functionExecutionStatsMap.values()) { |
| functionstats.close(); |
| } |
| functionServiceStats.close(); |
| } |
| |
| private FunctionStats create(String name, MeterRegistry meterRegistryFromSupplier) { |
| MeterRegistry meterRegistry = meterRegistryFromSupplier == null |
| ? noopMeterRegistry |
| : meterRegistryFromSupplier; |
| |
| Statistics statistics = statsDisabled |
| ? dummyStatistics |
| : statisticsFactory.createAtomicStatistics(FunctionStatsImpl.getStatisticsType(), name); |
| |
| return new FunctionStatsImpl(name, meterRegistry, statistics, functionServiceStats); |
| } |
| |
| /** |
| * Returns the Function Stats for the given function |
| * |
| * @param functionID represents the function for which we are returning the function Stats |
| * @param ds represents the Distributed System |
| * @return object of the FunctionStats |
| */ |
| public static FunctionStats getFunctionStats(String functionID, InternalDistributedSystem ds) { |
| return ds.getFunctionStatsManager().getFunctionStatsByName(functionID); |
| } |
| |
| public static FunctionStats getFunctionStats(String functionID) { |
| InternalDistributedSystem ds = InternalDistributedSystem.getAnyInstance(); |
| if (ds == null) { |
| return createDummyFunctionStats(); |
| } |
| return ds.getFunctionStatsManager().getFunctionStatsByName(functionID); |
| } |
| |
| @VisibleForTesting |
| FunctionStats getDummyFunctionStats() { |
| return dummyFunctionStats; |
| } |
| |
| @VisibleForTesting |
| Statistics getDummyStatistics() { |
| return dummyStatistics; |
| } |
| |
| @VisibleForTesting |
| MeterRegistry getNoopMeterRegistry() { |
| return noopMeterRegistry; |
| } |
| |
| private static FunctionStats createDummyFunctionStats() { |
| return createDummyFunctionStats(createNoopMeterRegistry(), createDummyStatistics()); |
| } |
| |
| private static FunctionStats createDummyFunctionStats(MeterRegistry meterRegistry, |
| Statistics statistics) { |
| return new FunctionStatsImpl("", meterRegistry, statistics, FunctionServiceStats.createDummy()); |
| } |
| |
| private static DummyStatisticsImpl createDummyStatistics() { |
| return new DummyStatisticsImpl(FunctionStatsImpl.getStatisticsType(), null, 0); |
| } |
| |
| private static NoopMeterRegistry createNoopMeterRegistry() { |
| return new NoopMeterRegistry(); |
| } |
| |
| public interface Factory { |
| FunctionStatsManager create(boolean statsDisabled, StatisticsFactory statisticsFactory, |
| Supplier<MeterRegistry> meterRegistrySupplier); |
| } |
| } |