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From Gary Tully <gary.tu...@gmail.com>
Subject Re: can a client "refuse" a message?
Date Mon, 03 Mar 2014 11:59:07 GMT
peek at the broker redelivery plugin -
http://activemq.apache.org/message-redelivery-and-dlq-handling.html#MessageRedeliveryandDLQHandling-BrokerRedelivery(v5.7)

that is most of what you want, the only caveat is that the number of
retries is not auto tuned to the number of consumers so you will just
have to pick a large enough value. Messages that a consumer rejects
get resent to the queue.


On 3 March 2014 09:54, Li Li <fancyerii@gmail.com> wrote:
> thank you very much. is it possible for client to send a message back
> to the front of the queue? I mean if consumer A can't process this
> message, it create a new message(the new message's content is the same
> as the old one) and put it to the front of the queue(so it can be
> consumed soon). I know I can set message priority. But I don't know
> whether it's performant.
>
> On Mon, Mar 3, 2014 at 5:47 PM, Rob Davies <rajdavies@gmail.com> wrote:
>> Beanstalkd might be a better fit for your use case - it's job based - and iirc allows
the client to reject jobs
>>
>>
>>> On 3 Mar 2014, at 09:41, Li Li <fancyerii@gmail.com> wrote:
>>>
>>> thank you. I want to know now is that to achieve my goal(as I
>>> described before), is it suitable to use activemq(or activemq+camel).
>>> if it's very hard to implement with activemq(+camel), I will try other
>>> solutions. or any other solutions are very welcomed. I could use any
>>> related solution(e.g. rabbitmq or other message related system)
>>>
>>>> On Mon, Mar 3, 2014 at 5:14 PM, Noel OConnor <noel.oconnor@gmail.com>
wrote:
>>>> Rather than trying to change activemq you could look at implementing
>>>> something with activemq and camel to provide this custom dispatch and
>>>> redelivery mechanism.
>>>>
>>>> But as artnaseef stated it wouldn't be a simple solution.
>>>>
>>>>
>>>>> On Mon, Mar 3, 2014 at 6:41 PM, Li Li <fancyerii@gmail.com> wrote:
>>>>>
>>>>> sorry to hear that. I need this feature very much. is it possible to
>>>>> "extend" activemq to achive this? is it difficult to modify the
>>>>> dispatch logic of activemq?
>>>>>
>>>>>> On Mon, Mar 3, 2014 at 1:56 PM, artnaseef <art@artnaseef.com>
wrote:
>>>>>> JMS does not provide such a method. You could use one queue per consumer
>>>>> and have a consumer send the message back to an input queueon failure,
but
>>>>> it would get complex since a way of knowing which consumers rejected
the
>>>>> message would need to be tracked with the message, as well as knowing
all
>>>>> the consumers and their queues.
>>>>>>
>>>>>>
>>>>>> Sent from my iPhone
>>>>>>
>>>>>>> On Mar 2, 2014, at 9:36 PM, "Li Li [via ActiveMQ]" <
>>>>> ml-node+s2283324n4678441h19@n4.nabble.com> wrote:
>>>>>>>
>>>>>>> hi all,
>>>>>>>    can a queue message consumer "refuse" a message after receive
a
>>>>> message?
>>>>>>>    because a client don't know the message in advance.
>>>>>>>    onMessage(Message msg){
>>>>>>>          if(CannotProcess(msg)){
>>>>>>>               //refuse this message
>>>>>>>          }
>>>>>>>     }
>>>>>>> what I need is: if the message can't be processed by one client,
it
>>>>>>> can be sent to another consumer.
>>>>>>> if all consumer "refuse" this message, then this message will
be
>>>>>>> removed to dead letter queue or to the end of the queue.
>>>>>>>
>>>>>>>
>>>>>>> If you reply to this email, your message will be added to the
>>>>> discussion below:
>>>>> http://activemq.2283324.n4.nabble.com/can-a-client-refuse-a-message-tp4678441.html
>>>>>>> To start a new topic under ActiveMQ - User, email
>>>>> ml-node+s2283324n2341805h3@n4.nabble.com
>>>>>>> To unsubscribe from ActiveMQ - User, click here.
>>>>>>> NAML
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> View this message in context:
>>>>> http://activemq.2283324.n4.nabble.com/can-a-client-refuse-a-message-tp4678441p4678446.html
>>>>>> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>>>>>



-- 
http://redhat.com
http://blog.garytully.com

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