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JmsProducer.scala
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JmsProducer.scala
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package com.gh.dobrynya.zio.jms
import javax.jms.{Destination, JMSException, Message, Session, Connection => JMSConnection}
import zio._
import zio.stream.ZSink
class JmsProducer[R, E >: JMSException, A](session: Session, sender: A => ZIO[R, E, Message]) {
def produce(message: A): ZIO[R, E, (A, Message)] = sender(message).map(message -> _)
def commit: IO[JMSException, Unit] = Task(session.commit()).refineToOrDie
def rollback: IO[JMSException, Unit] = Task(session.rollback()).refineToOrDie
}
object JmsProducer {
def sink[R, E >: JMSException, A](
destination: DestinationFactory,
encoder: (A, Session) => ZIO[R, E, Message],
transacted: Boolean = false,
acknowledgementMode: Int = Session.AUTO_ACKNOWLEDGE
): ZSink[R with BlockingConnection, E, A, A, Unit] =
ZSink.managed[R with BlockingConnection, E, A, JmsProducer[R, E, A], A, Unit](
make(destination, encoder, transacted, acknowledgementMode)
) { jmsProducer =>
ZSink.foreach(jmsProducer.produce)
}
def make[R, E >: JMSException, A](
destination: DestinationFactory,
encoder: (A, Session) => ZIO[R, E, Message],
transacted: Boolean = false,
acknowledgementMode: Int = Session.AUTO_ACKNOWLEDGE
): ZManaged[R with BlockingConnection, JMSException, JmsProducer[R, E, A]] =
for {
connection <- ZIO.service[JMSConnection].toManaged_
session <- session(connection, transacted, acknowledgementMode)
d = destination(session)
mp <- producer(session)
} yield
new JmsProducer[R, E, A](session,
message =>
encoder(message, session).map { encoded =>
mp.send(d, encoded)
encoded
})
def routerSink[R, E >: JMSException, A](
encoderAndRouter: (A, Session) => ZIO[R, E, (Destination, Message)],
transacted: Boolean = false,
acknowledgementMode: Int = Session.AUTO_ACKNOWLEDGE
): ZSink[R with BlockingConnection, E, A, A, Unit] =
ZSink.managed[R with BlockingConnection, E, A, JmsProducer[R, E, A], A, Unit](
for {
connection <- ZIO.service[JMSConnection].toManaged_
session <- session(connection, transacted, acknowledgementMode)
mp <- producer(session)
} yield
new JmsProducer[R, E, A](session,
message =>
encoderAndRouter(message, session).map {
case (d, encoded) =>
mp.send(d, encoded)
encoded
})
) { jmsProducer =>
ZSink.foreach(jmsProducer.produce)
}
/**
* Creates a sink for implementing Request - Reply integration pattern.
* It sends messages to the specified destination and enriches JMSReplyTo header with provided response destination.
* You need to specify JMSCorrelationID manually if required by provided encoder.
* @param destination specifies destination
* @param replyTo specifies response destination
* @param encoder converts a message to an appropriate JMS message
* @param transacted specifies session transactionality
* @param acknowledgementMode specifies session acknowledgement mode
* @tparam R specifies dependencies
* @tparam E specifies possible errors
* @tparam A message type
* @return a new sink
*/
def requestSink[R, E >: JMSException, A](
destination: DestinationFactory,
replyTo: DestinationFactory,
encoder: (A, Session) => ZIO[R, E, Message],
transacted: Boolean = false,
acknowledgementMode: Int = Session.AUTO_ACKNOWLEDGE
): ZSink[R with BlockingConnection, E, A, A, Unit] =
ZSink.managed[R with BlockingConnection, E, A, JmsProducer[R, E, A], A, Unit](
for {
connection <- ZIO.service[JMSConnection].toManaged_
session <- session(connection, transacted, acknowledgementMode)
mp <- producer(session)
d = destination(session)
replyHeader = replyTo(session)
} yield
new JmsProducer[R, E, A](session,
message =>
encoder(message, session).map { encoded =>
encoded.setJMSReplyTo(replyHeader)
mp.send(d, encoded)
encoded
})
) { jmsProducer =>
ZSink.foreach(jmsProducer.produce)
}
}