/*
 * Copyright 2018 the original author or 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
 *
 *      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.gradle.internal.execution.steps;

import com.google.common.collect.ImmutableList;
import org.gradle.caching.internal.origin.OriginMetadata;

import java.util.Optional;

public interface UpToDateResult extends SnapshotResult {
    /**
     * A list of messages describing the first few reasons encountered that caused the work to be executed.
     * An empty list means the work was up-to-date and hasn't been executed.
     */
    ImmutableList<String> getExecutionReasons();

    /**
     * If a previously produced output was reused in some way, the reused output's origin metadata is returned.
     */
    Optional<OriginMetadata> getReusedOutputOriginMetadata();
}
