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Swapped out Scala Actors to a reactor based impl (still restart and linking to do) + finalized transactional persisted cassandra based vector (ref to go)

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This commit is contained in:
Jonas Boner 2009-06-10 20:04:33 +02:00
parent 167b724671
commit ac52556595
22 changed files with 726 additions and 404 deletions
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39
kernel/src/main/scala/ActiveObject.scala
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@ -95,6 +95,11 @@ sealed class TransactionalAroundAdvice(target: Class[_],
server.transactionalMaps = maps
server.transactionalVectors = vectors
import kernel.reactor._
private[this] var dispatcher = new ProxyMessageDispatcher
private[this] var mailbox = dispatcher.messageQueue
dispatcher.start
import ActiveObject.threadBoundTx
private[this] var activeTx: Option[Transaction] = None
@ -113,12 +118,13 @@ sealed class TransactionalAroundAdvice(target: Class[_],
else handleResult(sendAndReceiveEventually(joinpoint))
} finally {
decrementTransaction
tryToPrecommitTransaction
removeTransactionIfTopLevel
if (isTransactionAborted) removeTransactionIfTopLevel
else tryToPrecommitTransaction
}
result
}
private def isTransactionAborted = activeTx.isDefined && activeTx.get.isAborted
private def incrementTransaction = if (activeTx.isDefined) activeTx.get.increment
private def decrementTransaction = if (activeTx.isDefined) activeTx.get.decrement
private def removeTransactionIfTopLevel =
@ -148,8 +154,7 @@ sealed class TransactionalAroundAdvice(target: Class[_],
private def tryToCommitTransaction = if (activeTx.isDefined) {
val tx = activeTx.get
tx.commit(server)
threadBoundTx.set(None)
activeTx = None
removeTransactionIfTopLevel
}
private def handleResult(result: ResultOrFailure[AnyRef]): AnyRef = {
@ -166,19 +171,31 @@ sealed class TransactionalAroundAdvice(target: Class[_],
case None => {} // no tx; nothing to do
case Some(tx) =>
tx.rollback(server)
threadBoundTx.set(Some(tx))
}
private def sendOneWay(joinpoint: JoinPoint) = server ! Invocation(joinpoint, activeTx)
private def sendOneWay(joinpoint: JoinPoint) =
mailbox.append(new MessageHandle(this, Invocation(joinpoint, activeTx), new NullFutureResult))
private def sendAndReceiveEventually(joinpoint: JoinPoint): ResultOrFailure[AnyRef] = {
server !!! (Invocation(joinpoint, activeTx), {
var resultOrFailure = ResultOrFailure(activeTx)
resultOrFailure() = throw new ActiveObjectInvocationTimeoutException("Invocation to active object [" + targetInstance.getClass.getName + "] timed out after " + server.timeout + " milliseconds")
resultOrFailure
})
val future = postMessageToMailboxAndCreateFutureResultWithTimeout(Invocation(joinpoint, activeTx), 1000)
future.await_?
getResultOrThrowException(future)
}
private def postMessageToMailboxAndCreateFutureResultWithTimeout(
message: AnyRef, timeout: Long): CompletableFutureResult = {
val future = new DefaultCompletableFutureResult(timeout)
mailbox.append(new MessageHandle(this, message, future))
future
}
private def getResultOrThrowException[T](future: FutureResult): ResultOrFailure[AnyRef] =
if (future.exception.isDefined) {
var resultOrFailure = ResultOrFailure(activeTx)
resultOrFailure() = throw future.exception.get
resultOrFailure
} else ResultOrFailure(future.result.get, activeTx)
/**
* Search for transactional items for a specific target instance, crawl the class hierarchy recursively up to the top.
*/