/*
 * 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.asterix.app.resource;

import java.util.HashSet;
import java.util.Set;

import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator;

public class PlanStage {

    private final Set<ILogicalOperator> operators = new HashSet<>();
    private final int stageId;

    PlanStage(int stageId) {
        this.stageId = stageId;
    }

    @Override
    public String toString() {
        return "Stage{" + "stageId=" + stageId + ", operators(" + operators.size() + ")" + "=" + operators + '}';
    }

    public Set<ILogicalOperator> getOperators() {
        return operators;
    }

    public long getRequiredMemory(OperatorResourcesComputer resourcesComputer) {
        return operators.stream().mapToLong(resourcesComputer::getOperatorRequiredMemory).sum();
    }

    public int getRequiredCores(OperatorResourcesComputer resourcesComputer) {
        return operators.stream().mapToInt(resourcesComputer::getOperatorRequiredCores).max()
                .orElse(OperatorResourcesComputer.MIN_OPERATOR_CORES);
    }
}
