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.examples.complete.datatokenization.utils;
  
  import java.util.Objects;
  import org.apache.beam.sdk.coders.DefaultCoder;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.MoreObjects;
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  /**
   * The {@link FailsafeElement} class holds the current value and original value of a record within a
   * pipeline. This class allows pipelines to not lose valuable information about an incoming record
   * throughout the processing of that record. The use of this class allows for more robust
   * dead-letter strategies as the original record information is not lost throughout the pipeline and
   * can be output to a dead-letter in the event of a failure during one of the pipelines transforms.
   */
  @DefaultCoder(FailsafeElementCoder.class)
  public class FailsafeElement<OriginalT, CurrentT> {
  
    private final OriginalT originalPayload;
    private final CurrentT payload;
  
    @org.apache.avro.reflect.Nullable private @Nullable String errorMessage = null;
  
    @org.apache.avro.reflect.Nullable private @Nullable String stacktrace = null;
  
    private FailsafeElement(OriginalT originalPayload, CurrentT payload) {
      this.originalPayload = originalPayload;
      this.payload = payload;
    }
  
    public static <OriginalT, CurrentT> FailsafeElement<OriginalT, CurrentT> of(
        OriginalT originalPayload, CurrentT currentPayload) {
      return new FailsafeElement<>(originalPayload, currentPayload);
    }
  
    public static <OriginalT, CurrentT> FailsafeElement<OriginalT, CurrentT> of(
        FailsafeElement<OriginalT, CurrentT> other) {
      return new FailsafeElement<>(other.originalPayload, other.payload)
          .setErrorMessage(other.getErrorMessage())
          .setStacktrace(other.getStacktrace());
    }
  
    public OriginalT getOriginalPayload() {
      return originalPayload;
    }
  
    public CurrentT getPayload() {
      return payload;
    }
  
    public @Nullable String getErrorMessage() {
      return errorMessage;
    }
  
    public FailsafeElement<OriginalT, CurrentT> setErrorMessage(@Nullable String errorMessage) {
      this.errorMessage = errorMessage;
      return this;
    }
  
    public @Nullable String getStacktrace() {
      return stacktrace;
    }
  
    public FailsafeElement<OriginalT, CurrentT> setStacktrace(@Nullable String stacktrace) {
      this.stacktrace = stacktrace;
      return this;
    }
  
    @Override
    public int hashCode() {
      return Objects.hash(originalPayload, payload, errorMessage, stacktrace);
    }
  
    @Override
    public String toString() {
      return MoreObjects.toStringHelper(this)
          .add("originalPayload", originalPayload)
          .add("payload", payload)
          .add("errorMessage", errorMessage)
          .add("stacktrace", stacktrace)
          .toString();
    }
  }
  