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/*
* MIT License
*
* Copyright (c) 2017 atlarge-research
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package nl.atlarge.opendc.kernel.omega
import nl.atlarge.opendc.kernel.messaging.Envelope
import nl.atlarge.opendc.kernel.messaging.Receipt
import nl.atlarge.opendc.kernel.time.Instant
import nl.atlarge.opendc.topology.Entity
/**
* A wrapper around a message that has been scheduled for processing.
*
* @property message The message to wrap.
* @property time The point in time to deliver the message.
* @property sender The sender of the message.
* @property destination The destination of the message.
* @author Fabian Mastenbroek (f.s.mastenbroek@student.tudelft.nl)
*/
internal data class MessageContainer(override val message: Any,
val time: Instant,
override val sender: Entity<*>?,
override val destination: Entity<*>) : Envelope<Any>, Receipt {
/**
* A flag to indicate the message has been canceled.
*/
override var canceled: Boolean = false
/**
* A flag to indicate the message has been delivered.
*/
override var delivered: Boolean = false
/**
* Cancel the message to prevent it from being received by an [Entity].
*
* @throws IllegalStateException if the message has already been delivered.
*/
override fun cancel() {
if (delivered) {
throw IllegalStateException("The message has already been delivered")
}
canceled = true
}
}
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