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INT-2685 Transaction Synchronization

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Remove M3 disposition-* attributes on File/(S)FTP inbound adapters.

Add <pseudo-transactional/> and <transaction-synchronization/> elements
to <poller/>.

These elements provide the following attributes:

* on-success-expression
* on-success-result-channel
* on-failure-expression
* on-failure-result-channel
* send-timeout

<transaction-synchronization/> synchronizes these expression evaluations
with the transaction, such that they are executed immediately after
the commit/rollback.

<psuedo-transactional/> is used for a non-transactional poller.

When an <advice-chain/> is provided to the poller, <psuedo-transactional/>
and <transaction-synchronization/> are synonyms; and the behavior is
dictated by whether or not the <advice-chain/> contains a transaction
advice. It is recommended that <pseudo-transactional/> is used when the
<advice-chain/> does not have a txAdvice, and <transaction-synchronization/>
when it does, but the framework does not enforce this.

The expressions have the original (polled) message as the #root variable.
In addition, a BeanResolver is provided, allowing expressions such as
'@someBean.handleSuccess(payload)'.

MessageSources may also implement PseudoTransactionalMessageSource. This
has a number of methods allowing more flexibility in transactional and
non-transactional environents. For example, for backwards compatibility.
the mail-inbound-channel-adapter deletes its polled message after the
receive() rather than after the polled message is sent (when running in
a non-transactional poller). However, when running in a transactional
poller, the delete is done after the transaction commits (but not when
it rolls back).

In addition, MessageSources that implement this interface can optionally
provide an arbitrary object to the success/failure expressions in a
variable named '#resource'.

INT-2685 Polishing

PR Review Comments

Add tests for non-tx PseudoTransactionalMessageSource
This commit is contained in:
Gary Russell
2012-07-26 18:23:49 -04:00
committed by Oleg Zhurakousky
parent d6623bda82
commit 4de02fa75e
33 changed files with 892 additions and 458 deletions
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12
spring-integration-mail/src/main/java/org/springframework/integration/mail/MailReceivingMessageSource.java
View File

@@ -81,25 +81,25 @@ public class MailReceivingMessageSource implements PseudoTransactionalMessageSou
return this.mailReceiver.getTransactionContext();
}
public void afterCommit(MailReceiverContext context) {
public void afterCommit(Object context) {
Assert.isTrue(context instanceof MailReceiverContext, "Expected a MailReceiverContext");
this.mailReceiver.closeContextAfterSuccess(context);
this.mailReceiver.closeContextAfterSuccess((MailReceiverContext) context);
}
public void afterRollback(MailReceiverContext context) {
public void afterRollback(Object context) {
Assert.isTrue(context instanceof MailReceiverContext, "Expected a MailReceiverContext");
this.mailReceiver.closeContextAfterFailure(context);
this.mailReceiver.closeContextAfterFailure((MailReceiverContext) context);
}
/**
* For backwards-compatibility; the mail adapter updates the status before the send.
* For backwards-compatibility; with no tx, the mail adapter updates the status before the send.
*/
public void afterReceiveNoTx(MailReceiverContext resource) {
this.afterCommit(resource);
}
/**
* For backwards-compatibility; the mail adapter updates the status before the send.
* For backwards-compatibility; with no tx, the mail adapter updates the status before the send.
*/
public void afterSendNoTx(MailReceiverContext resource) {
// No op