| /* |
| * 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.beam.runners.core.metrics; |
| |
| import javax.annotation.Nullable; |
| import org.apache.beam.sdk.metrics.DistributionResult; |
| import org.apache.beam.sdk.metrics.GaugeResult; |
| import org.apache.beam.sdk.metrics.MetricFiltering; |
| import org.apache.beam.sdk.metrics.MetricQueryResults; |
| import org.apache.beam.sdk.metrics.MetricResult; |
| import org.apache.beam.sdk.metrics.MetricResults; |
| import org.apache.beam.sdk.metrics.MetricsFilter; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Iterables; |
| |
| /** |
| * Default implementation of {@link org.apache.beam.sdk.metrics.MetricResults}, which takes static |
| * {@link Iterable}s of counters, distributions, and gauges, and serves queries by applying {@link |
| * org.apache.beam.sdk.metrics.MetricsFilter}s linearly to them. |
| */ |
| public class DefaultMetricResults extends MetricResults { |
| |
| private final Iterable<MetricResult<Long>> counters; |
| private final Iterable<MetricResult<DistributionResult>> distributions; |
| private final Iterable<MetricResult<GaugeResult>> gauges; |
| |
| public DefaultMetricResults( |
| Iterable<MetricResult<Long>> counters, |
| Iterable<MetricResult<DistributionResult>> distributions, |
| Iterable<MetricResult<GaugeResult>> gauges) { |
| this.counters = counters; |
| this.distributions = distributions; |
| this.gauges = gauges; |
| } |
| |
| @Override |
| public MetricQueryResults queryMetrics(@Nullable MetricsFilter filter) { |
| return MetricQueryResults.create( |
| Iterables.filter(counters, counter -> MetricFiltering.matches(filter, counter.getKey())), |
| Iterables.filter( |
| distributions, distribution -> MetricFiltering.matches(filter, distribution.getKey())), |
| Iterables.filter(gauges, gauge -> MetricFiltering.matches(filter, gauge.getKey()))); |
| } |
| } |