lm-sistemi-software-distrib.../src/main/kotlin/util/jms/replier/AbstarctReplier.kt

59 lines
1.7 KiB
Kotlin

package util.jms.replier
import java.io.Serializable
import javax.jms.Message
import javax.jms.Queue
import javax.jms.QueueConnectionFactory
import javax.jms.Session
import javax.jms.ObjectMessage
import javax.jms.TextMessage
abstract class AbstarctReplier(
queueName: String,
private val shared: Boolean = false
) : Replier {
private val factory: QueueConnectionFactory = this.getFactory()
private val connection = factory.createQueueConnection()
private val mainSession = connection.createQueueSession(
false,
Session.AUTO_ACKNOWLEDGE
)
private val mainQueue = mainSession.createQueue(queueName)
private val receiver = mainSession.createReceiver(mainQueue)
private val secondarySession = connection.createQueueSession(
false,
Session.AUTO_ACKNOWLEDGE
)
override fun onRequest(buildResponse: (Message) -> Message) {
receiver.setMessageListener {
val replyQueue = it.jmsReplyTo as Queue
val sender = secondarySession.createSender(replyQueue)
val replyMessage = buildResponse(it)
if (shared)
replyMessage.jmsCorrelationID = it.jmsMessageID
sender.send(replyMessage)
}
}
override fun createTextMessage(text: String): TextMessage = mainSession.createTextMessage(text)
override fun createObjectMessage(obj: Serializable?): ObjectMessage =
mainSession.createObjectMessage(obj)
override fun createMessage(): Message = mainSession.createMessage()
override fun start() {
connection.start()
}
override fun close() {
mainSession.close()
connection.close()
}
abstract fun getFactory(uri: String = "tcp://localhost:61616"): QueueConnectionFactory
}