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.arrow.flight;
  
  import java.io.IOException;
  import java.nio.ByteBuffer;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.stream.Collectors;
  import org.apache.arrow.flight.impl.Flight;
  
  /** The result of attempting to set a set of session options. */
  public class SetSessionOptionsResult {
    /** Error status value for per-option errors. */
    public enum ErrorValue {
      /**
       * The status of setting the option is unknown. Servers should avoid using this value (send a
       * NOT_FOUND error if the requested session is not known). Clients can retry the request.
       */
      UNSPECIFIED,
      /** The given session option name is invalid. */
      INVALID_NAME,
      /** The session option value or type is invalid. */
      INVALID_VALUE,
      /** The session option cannot be set. */
      ERROR,
      ;
  
      static ErrorValue fromProtocol(Flight.SetSessionOptionsResult.ErrorValue s) {
        return values()[s.getNumber()];
      }
  
      Flight.SetSessionOptionsResult.ErrorValue toProtocol() {
        return Flight.SetSessionOptionsResult.ErrorValue.values()[ordinal()];
      }
    }
  
    /** Per-option extensible error response container. */
    public static class Error {
      public ErrorValue value;
  
      public Error(ErrorValue value) {
        this.value = value;
      }
  
      Error(Flight.SetSessionOptionsResult.Error e) {
        value = ErrorValue.fromProtocol(e.getValue());
      }
  
      Flight.SetSessionOptionsResult.Error toProtocol() {
        Flight.SetSessionOptionsResult.Error.Builder b =
            Flight.SetSessionOptionsResult.Error.newBuilder();
        b.setValue(value.toProtocol());
        return b.build();
      }
  
      @Override
      public boolean equals(Object o) {
        if (this == o) {
          return true;
        }
        if (o == null || getClass() != o.getClass()) {
          return false;
        }
        Error that = (Error) o;
        return value == that.value;
      }
  
      @Override
      public int hashCode() {
        return value.hashCode();
      }
    }
  
    private final Map<String, Error> errors;
  
    public SetSessionOptionsResult(Map<String, Error> errors) {
      this.errors = Collections.unmodifiableMap(new HashMap<String, Error>(errors));
    }
  
    SetSessionOptionsResult(Flight.SetSessionOptionsResult proto) {
      errors =
          Collections.unmodifiableMap(
              proto.getErrors().entrySet().stream()
                  .collect(Collectors.toMap(Map.Entry::getKey, (e) -> new Error(e.getValue()))));
    }
  
    /** Report whether the error map has nonzero length. */
    public boolean hasErrors() {
      return errors.size() > 0;
    }
  
    /**
     * Get the error status map from the result object.
     *
     * @return An immutable view of the error status map.
     */
    public Map<String, Error> getErrors() {
      return errors;
    }
  
    Flight.SetSessionOptionsResult toProtocol() {
      Flight.SetSessionOptionsResult.Builder b = Flight.SetSessionOptionsResult.newBuilder();
      b.putAllErrors(
          errors.entrySet().stream()
              .collect(Collectors.toMap(Map.Entry::getKey, (e) -> e.getValue().toProtocol())));
      return b.build();
    }
  
    /**
     * Get the serialized form of this protocol message.
     *
     * <p>Intended to help interoperability by allowing non-Flight services to still return Flight
     * types.
     */
    public ByteBuffer serialize() {
      return ByteBuffer.wrap(toProtocol().toByteArray());
    }
  
    /**
     * Parse the serialized form of this protocol message.
     *
     * <p>Intended to help interoperability by allowing Flight clients to obtain stream info from
     * non-Flight services.
     *
     * @param serialized The serialized form of the message, as returned by {@link #serialize()}.
     * @return The deserialized message.
     * @throws IOException if the serialized form is invalid.
     */
    public static SetSessionOptionsResult deserialize(ByteBuffer serialized) throws IOException {
      return new SetSessionOptionsResult(Flight.SetSessionOptionsResult.parseFrom(serialized));
    }
  }
  