// 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.lib.actions;

import com.google.devtools.build.lib.server.FailureDetails.FailureDetail;

/**
 * Exception to be thrown if an action failed to execute because it is missing Skyframe
 * dependencies.
 *
 * <p>This is expected to be possible when {@link
 * MetadataProvider#mayGetGeneratingActionsFromSkyframe} is {@code true}.
 */
public final class MissingDepExecException extends ExecException {

  public MissingDepExecException() {
    super("Missing skyframe dependency");
  }

  @Override
  protected FailureDetail getFailureDetail(String message) {
    throw new UnsupportedOperationException("MissingDepException should be handled");
  }
}