[openamq-dev] HA pair & Wire API

[Martin Sustrik]

Dmitri,

Yes, the failover should be handled in the application. It's sort of 
inconvenient, but not really difficult.

Martin

Dmitri Tsyganov wrote:
> Thanks, Martin
> 
> Yes, I see that the failover works on the broker side as documented. 
> So do you know if client side (Wire API) will implement failover or it
> should be handled in applications?
> 
> Thank you,
> 
> Dmitri
> 
> 
> On Fri, 2007-12-07 at 08:54 +0100, Martin Sustrik wrote:
>> Dmitri,
>>
>> No, the failover implementation is incomplete, but still functional. In 
>> fact, we are using it in production.
>>
>> On broker side, transition of control between the two brokers is 
>> implemented. I.e. only one broker is active at time, the other one 
>> refusing connections.
>>
>> That way, your applications should try to connect to one broker and if 
>> connecting fails - because broker is either down or it is non-active 
>> backup broker - it should try to connect to the other broker in the HA pair.
>>
>> Martin
>>
>>> Is HA pair automatic fail-over supported in Wire API?
>>>
>>> According to the doc, I should be able to provide a host list -
>>>
>>> Client-side Semantics
>>> Our goal with high-availability is to make the client semantics very
>>> simple: 
>>>
>>>      1. Client applications should know both HA peer addresses. In the
>>>         client APIs we allow the "hostname" to be specified as a list.
>>>         This list would contain two server names/addresses.
>>>
>>> but I am not sure how. Maybe I am missing something.
>>>
>>> Second problem I have is that I can't connect to a backup server with
>>> amq_shell - my connection gets rejected. I think connection from shell
>>> should be allowed, according to the doc.
>>>
>>> Thank you,
>>>
>>> Dmitri
>>> _______________________________________________
>>> openamq-dev mailing list
>>> openamq-dev at lists.openamq.org
>>> http://lists.openamq.org/mailman/listinfo/openamq-dev
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