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/*
 * Copyright (C) 2010-2023, Danilo Pianini and contributors
 * listed, for each module, in the respective subproject's build.gradle.kts file.
 *
 * This file is part of Alchemist, and is distributed under the terms of the
 * GNU General Public License, with a linking exception,
 * as described in the file LICENSE in the Alchemist distribution's top directory.
 */

package it.unibo.alchemist.boundary.extractors

import it.unibo.alchemist.boundary.Extractor
import it.unibo.alchemist.model.Actionable
import it.unibo.alchemist.model.Environment
import it.unibo.alchemist.model.Time

/**
 * Logs the number of nodes in the scenario.
 */
class NumberOfNodes : Extractor {

    override val columnNames = listOf(name)

    override fun  extractData(
        environment: Environment,
        reaction: Actionable?,
        time: Time,
        step: Long,
    ): Map = mapOf(name to environment.nodeCount)

    private companion object {
        private const val name: String = "nodes"
    }
}