Alternative to Message.Flag.INTERNAL

[prateekjainaa]

Hi All,

I am upgrading jgroups version from 3.x to 5.x for an application and it has a check like this,

if ( message.isFlagSet(Message.Flag.INTERNAL) ) {
  // .. do something
}

I found that org.jgroups.Message class is now an interface and INTERNAL flag has been removed from it. I couldn't find any comment there on what should be used as an alternative to it. Can someone suggest on how can we achieve same behavior with latest jgroups release?

Regards,
///

[belaban]

You should not have used INTERNAL in the first place; this was for JGroups internal use only!:

INTERNAL(      (short)(1 <<  9)),    // for internal use by JGroups only, don't use !

It depends on what you want to achieve. If you don't care about ordering and want your own thread to deliver a message or message batch, use OOB. Note that you can also create your own Message implementation (extending BaseMessage) and add additional flags. Or, alternatively, create your own Header which carries such a flag.

[prateekjainaa]

@belaban , I dont want to apply my logic on these internal messages . So, apart from creating custom Message implementation; is there an alternative?

[belaban]

I don't understand what you mean. Why were you using internal messages in the first place?

[prateekjainaa]

Hi @belaban ,
I meant that the logic is something similar to

if (!message.isInternal()) {
//apply logic
}
So that processing is only applied to messages which are not internal. Unfortunately, I dont know the full usecase but in summary I want to identify the internal messages.

[belaban]

Again, why do you need to know which messages are internal? Internal messages are supposed to be opaque and should not be dealt with at the aplication level