// Copyright 2021 The Bazel Authors. All rights reserved.
//
// 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
//
//    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 com.google.devtools.build.lib.actions;

import static com.google.common.base.Preconditions.checkNotNull;
import static java.util.Objects.requireNonNull;

import com.google.devtools.build.lib.events.ExtendedEventHandler.Postable;

/**
 * Notifies that an in-flight action is checking the cache.
 *
 * @param action Gets the metadata associated with the action.
 * @param strategy Gets the name of the strategy on which the action is caching.
 */
public record CachingActionEvent(ActionExecutionMetadata action, String strategy)
    implements Postable {
  public CachingActionEvent {
    requireNonNull(action, "action");
    requireNonNull(strategy, "strategy");
  }

  public static CachingActionEvent create(ActionExecutionMetadata action, String strategy) {
    return new CachingActionEvent(
        action, checkNotNull(strategy, "Strategy names are not optional"));
  }

}
