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// Copyright 2022 The Pigweed Authors
//
// Licensed 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
//
//     https://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 dev.pigweed.pw_rpc;

import com.google.auto.value.AutoValue;
import java.util.Locale;

/**
 * Represents a potential RPC invocation: channel ID, service, and method.
 */
@AutoValue
public abstract class RpcKey {
  static RpcKey create(int channelId, Method method) {
    return new AutoValue_RpcKey(channelId, method);
  }

  public abstract int channelId();

  public final Service service() {
    return method().service();
  }

  public abstract Method method();

  @Override
  public final String toString() {
    return String.format(Locale.ENGLISH, "RpcKey[%s|channel=%d]", method(), channelId());
  }
}