content: /*
   * 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.spark.metrics;
  
  import com.codahale.metrics.MetricRegistry;
  import org.apache.spark.metrics.source.Source;
  
  /**
   * A Spark {@link Source} that is tailored to expose a {@link SparkBeamMetric}, wrapping an
   * underlying {@link org.apache.beam.sdk.metrics.MetricResults} instance.
   */
  public class SparkBeamMetricSource implements Source {
    private static final String METRIC_NAME = "Metrics";
  
    private final String name;
  
    private final MetricRegistry metricRegistry = new MetricRegistry();
  
    public SparkBeamMetricSource(final String name) {
      this.name = name;
      metricRegistry.register(METRIC_NAME, new SparkBeamMetric());
    }
  
    @Override
    public String sourceName() {
      return name;
    }
  
    @Override
    public MetricRegistry metricRegistry() {
      return metricRegistry;
    }
  }
  