src/main/java/com/google/devtools/build/skyframe/TransitiveVersionTable.java


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// Copyright 2018 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.skyframe;

import java.io.IOException;

/** Readable view of transitive version information. */
public interface TransitiveVersionTable {

  VersionAggregator get(SkyKey key);

  /** Encapsulates transitive version information. */
  interface VersionAggregator {
    /** @return the maximum transitive source version or -1 if no sources were found */
    long getMaxTransitiveVersion(
        long baselineVersion, InterruptibleIOLongSupplier deferredMaxDepVersion)
        throws InterruptedException, IOException;
  }
}