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.jet;
  
  import java.util.Collections;
  import org.apache.beam.sdk.PipelineResult;
  import org.apache.beam.sdk.metrics.BoundedTrieResult;
  import org.apache.beam.sdk.metrics.DistributionResult;
  import org.apache.beam.sdk.metrics.GaugeResult;
  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.sdk.metrics.StringSetResult;
  import org.apache.beam.sdk.util.HistogramData;
  import org.checkerframework.checker.nullness.qual.Nullable;
  import org.joda.time.Duration;
  
  /**
   * Alternative implementation of {@link PipelineResult} used to avoid throwing Exceptions in certain
   * situations.
   */
  public class FailedRunningPipelineResults implements PipelineResult {
  
    private final RuntimeException cause;
  
    public FailedRunningPipelineResults(RuntimeException cause) {
      this.cause = cause;
    }
  
    public RuntimeException getCause() {
      return cause;
    }
  
    @Override
    public State getState() {
      return State.DONE;
    }
  
    @Override
    public State cancel() {
      return State.DONE;
    }
  
    @Override
    public State waitUntilFinish(Duration duration) {
      return State.DONE;
    }
  
    @Override
    public State waitUntilFinish() {
      return State.DONE;
    }
  
    @Override
    public MetricResults metrics() {
      return new MetricResults() {
        @Override
        public MetricQueryResults queryMetrics(@Nullable MetricsFilter filter) {
          return new MetricQueryResults() {
            @Override
            public Iterable<MetricResult<Long>> getCounters() {
              return Collections.emptyList();
            }
  
            @Override
            public Iterable<MetricResult<DistributionResult>> getDistributions() {
              return Collections.emptyList();
            }
  
            @Override
            public Iterable<MetricResult<GaugeResult>> getGauges() {
              return Collections.emptyList();
            }
  
            @Override
            public Iterable<MetricResult<StringSetResult>> getStringSets() {
              return Collections.emptyList();
            }
  
            @Override
            public Iterable<MetricResult<BoundedTrieResult>> getBoundedTries() {
              return Collections.emptyList();
            }
  
            @Override
            public Iterable<MetricResult<HistogramData>> getHistograms() {
              return Collections.emptyList();
            }
          };
        }
      };
    }
  }
  