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.sdk.transforms.errorhandling;
  
  import java.io.Serializable;
  import org.apache.beam.sdk.coders.Coder;
  import org.apache.beam.sdk.transforms.DoFn;
  import org.apache.beam.sdk.transforms.DoFn.MultiOutputReceiver;
  import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
  import org.apache.beam.sdk.util.Preconditions;
  import org.apache.beam.sdk.values.TupleTag;
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  public interface BadRecordRouter extends Serializable {
  
    BadRecordRouter THROWING_ROUTER = new ThrowingBadRecordRouter();
  
    BadRecordRouter RECORDING_ROUTER = new RecordingBadRecordRouter();
  
    TupleTag<BadRecord> BAD_RECORD_TAG = new TupleTag<>();
  
    <RecordT> void route(
        MultiOutputReceiver outputReceiver,
        RecordT record,
        @Nullable Coder<RecordT> coder,
        @Nullable Exception exception,
        String description)
        throws Exception;
  
    <RecordT> void route(
        DoFn<?, ?>.FinishBundleContext c,
        RecordT record,
        @Nullable Coder<RecordT> coder,
        @Nullable Exception exception,
        String description,
        BoundedWindow window)
        throws Exception;
  
    class ThrowingBadRecordRouter implements BadRecordRouter {
  
      @Override
      public <RecordT> void route(
          MultiOutputReceiver outputReceiver,
          RecordT record,
          @Nullable Coder<RecordT> coder,
          @Nullable Exception exception,
          String description)
          throws Exception {
        route(record, exception);
      }
  
      @Override
      public <RecordT> void route(
          DoFn<?, ?>.FinishBundleContext c,
          RecordT record,
          @Nullable Coder<RecordT> coder,
          @Nullable Exception exception,
          String description,
          BoundedWindow window)
          throws Exception {
        route(record, exception);
      }
  
      private <RecordT> void route(RecordT record, @Nullable Exception exception) throws Exception {
        if (exception != null) {
          throw exception;
        } else {
          Preconditions.checkArgumentNotNull(record);
          String encodedRecord =
              BadRecord.Record.builder()
                  .addHumanReadableJson(record)
                  .build()
                  .getHumanReadableJsonRecord();
          if (encodedRecord == null) {
            encodedRecord = "Unable to serialize bad record";
          }
          throw new RuntimeException("Encountered Bad Record: " + encodedRecord);
        }
      }
    }
  
    class RecordingBadRecordRouter implements BadRecordRouter {
  
      @Override
      public <RecordT> void route(
          MultiOutputReceiver outputReceiver,
          RecordT record,
          @Nullable Coder<RecordT> coder,
          @Nullable Exception exception,
          String description)
          throws Exception {
        outputReceiver
            .get(BAD_RECORD_TAG)
            .output(BadRecord.fromExceptionInformation(record, coder, exception, description));
      }
  
      @Override
      public <RecordT> void route(
          DoFn<?, ?>.FinishBundleContext c,
          RecordT record,
          @Nullable Coder<RecordT> coder,
          @Nullable Exception exception,
          String description,
          BoundedWindow window)
          throws Exception {
        c.output(
            BAD_RECORD_TAG,
            BadRecord.fromExceptionInformation(record, coder, exception, description),
            window.maxTimestamp(),
            window);
      }
    }
  }
  