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Posted to users@activemq.apache.org by Rodrigo Ramos <cr...@gmail.com> on 2014/01/20 20:51:04 UTC

Transport Options (Randomize algorithm)

Hello

I´m going to use randomize transport option, but, first I want to know how
does it work, in others words, What algorithm is used for randomize?


Regards

Re: Transport Options (Randomize algorithm)

Posted by Rodrigo Ramos <cr...@gmail.com>.

Thanks for your help and your code.




2014/1/21 Richard Kettelerij <ri...@gmail.com>

> Here's the implementation of ?randomize=true. Source
>
> https://github.com/apache/activemq/blob/trunk/activemq-client/src/main/java/org/apache/activemq/transport/failover/FailoverTransport.java
>
> if (randomize) {
>             // Randomly, reorder the list by random swapping
>             for (int i = 0; i < l.size(); i++) {
>                 // meed parenthesis due other JDKs (see AMQ-4826)
>
>                 int p = ((int) (Math.random() * 100)) % l.size();
>                 URI t = l.get(p);
>                 l.set(p, l.get(i));
>                 l.set(i, t);
>             }
>         }
>
>
>
> On Mon, Jan 20, 2014 at 8:51 PM, Rodrigo Ramos <cr...@gmail.com>
> wrote:
>
> > Hello
> >
> > I´m going to use randomize transport option, but, first I want to know
> how
> > does it work, in others words, What algorithm is used for randomize?
> >
> >
> > Regards
> >
>

Re: Transport Options (Randomize algorithm)

Posted by Richard Kettelerij <ri...@gmail.com>.

Here's the implementation of ?randomize=true. Source
https://github.com/apache/activemq/blob/trunk/activemq-client/src/main/java/org/apache/activemq/transport/failover/FailoverTransport.java

if (randomize) {
            // Randomly, reorder the list by random swapping
            for (int i = 0; i < l.size(); i++) {
                // meed parenthesis due other JDKs (see AMQ-4826)

                int p = ((int) (Math.random() * 100)) % l.size();
                URI t = l.get(p);
                l.set(p, l.get(i));
                l.set(i, t);
            }
        }

On Mon, Jan 20, 2014 at 8:51 PM, Rodrigo Ramos <cr...@gmail.com> wrote:

> Hello
>
> I´m going to use randomize transport option, but, first I want to know how
> does it work, in others words, What algorithm is used for randomize?
>
>
> Regards
>