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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.druid.indexing.common.actions;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.type.TypeReference;
import com.google.common.base.Optional;
import org.apache.druid.indexing.common.task.Task;
import org.apache.druid.java.util.common.ISE;

/**
 * Perform the given action using {@link #surrogateId} on behalf of the caller task.
 */
public class SurrogateAction> implements TaskAction
{
  private final String surrogateId;
  private final ActionType taskAction;

  @JsonCreator
  public SurrogateAction(
      @JsonProperty("surrogateId") String surrogateId,
      @JsonProperty("taskAction") ActionType taskAction
  )
  {
    this.surrogateId = surrogateId;
    this.taskAction = taskAction;
  }

  @JsonProperty
  public String getSurrogateId()
  {
    return surrogateId;
  }

  @JsonProperty
  public ActionType getTaskAction()
  {
    return taskAction;
  }

  @Override
  public TypeReference getReturnTypeReference()
  {
    return taskAction.getReturnTypeReference();
  }

  @Override
  public ReturnType perform(Task task, TaskActionToolbox toolbox)
  {
    final Optional maybeSurrogateTask = toolbox.getTaskStorage().getTask(surrogateId);
    if (maybeSurrogateTask.isPresent()) {
      return taskAction.perform(maybeSurrogateTask.get(), toolbox);
    } else {
      throw new ISE("Can't find surrogate task[%s]", surrogateId);
    }
  }

  @Override
  public String toString()
  {
    return "SurrogateAction{" +
           "surrogateId='" + surrogateId + '\'' +
           ", taskAction=" + taskAction +
           '}';
  }
}