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.core.construction;
  
  import com.fasterxml.jackson.core.JsonProcessingException;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import java.io.IOException;
  import java.io.ObjectInputStream;
  import java.io.Serializable;
  import java.util.Objects;
  import org.apache.beam.sdk.io.FileSystems;
  import org.apache.beam.sdk.options.PipelineOptions;
  import org.apache.beam.sdk.util.common.ReflectHelpers;
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  /**
   * Holds a {@link PipelineOptions} in JSON serialized form and calls {@link
   * FileSystems#setDefaultPipelineOptions(PipelineOptions)} on construction or on deserialization.
   */
  public class SerializablePipelineOptions implements Serializable {
    private static final ObjectMapper MAPPER =
        new ObjectMapper()
            .registerModules(ObjectMapper.findModules(ReflectHelpers.findClassLoader()));
  
    private final String serializedPipelineOptions;
    private transient PipelineOptions options;
  
    public SerializablePipelineOptions(PipelineOptions options) {
      this.serializedPipelineOptions = serializeToJson(options);
      this.options = options;
      FileSystems.setDefaultPipelineOptions(options);
    }
  
    public SerializablePipelineOptions(String json) {
      this.serializedPipelineOptions = json;
      this.options = deserializeFromJson(json);
      FileSystems.setDefaultPipelineOptions(options);
    }
  
    public PipelineOptions get() {
      return options;
    }
  
    private void readObject(ObjectInputStream is) throws IOException, ClassNotFoundException {
      is.defaultReadObject();
      this.options = deserializeFromJson(serializedPipelineOptions);
      // TODO https://github.com/apache/beam/issues/18430: remove this call.
      FileSystems.setDefaultPipelineOptions(options);
    }
  
    private static String serializeToJson(PipelineOptions options) {
      try {
        return MAPPER.writeValueAsString(options);
      } catch (JsonProcessingException e) {
        throw new IllegalArgumentException("Failed to serialize PipelineOptions", e);
      }
    }
  
    private static PipelineOptions deserializeFromJson(String options) {
      try {
        return MAPPER.readValue(options, PipelineOptions.class);
      } catch (IOException e) {
        throw new IllegalArgumentException("Failed to deserialize PipelineOptions", e);
      }
    }
  
    @Override
    public String toString() {
      return serializedPipelineOptions;
    }
  
    @Override
    public boolean equals(@Nullable Object o) {
      if (this == o) {
        return true;
      }
      if (o == null || getClass() != o.getClass()) {
        return false;
      }
      SerializablePipelineOptions that = (SerializablePipelineOptions) o;
      return serializedPipelineOptions.equals(that.serializedPipelineOptions);
      // do not assert on this.options.equals(that.options) because PipelineOptions is a interface
      // and its equal compares references.
    }
  
    @Override
    public int hashCode() {
      return Objects.hash(serializedPipelineOptions, options);
    }
  }
  