[rabbitmq-discuss] RabbitMQ message monitoring directly via Mnesia tables?

[Alexis Richardson]

On Thu, Jul 16, 2009 at 11:35 AM, Lynton
Grice<lynton.grice at logosworld.com> wrote:
> Hi Alexis,
>
> Many thanks for the comments, much appreciated.
>
> On the "pluggable persistence" I think there is already some CouchDB
> replication of messages already?
> https://dev.rabbitmq.com/wiki/RabbitCouchRelay

Yes there has been some dabbling but nothing 'integrated'.  What you
see is a write-behind store, not really very different from consuming
and writing to a database.




> I look forward to when we can see message data in RabbitMQ without pulling
> off the messages...

Agreed, it could be useful.  My understanding from the engineering
team is that it's not a trivial thing to implement properly.

alexis





> Thanks again ;-)
>
> Lynton
>
> -----Original Message-----
> From: Alexis Richardson [mailto:alexis.richardson at gmail.com]
> Sent: 16 July 2009 12:07 PM
> To: Lynton Grice
> Cc: rabbitmq-discuss at lists.rabbitmq.com
> Subject: Re: [rabbitmq-discuss] RabbitMQ message monitoring directly via
> Mnesia tables?
>
> Lynton
>
> On Thu, Jul 16, 2009 at 10:48 AM, Lynton
> Grice<lynton.grice at logosworld.com> wrote:
>> Hi there,
>>
>>
>>
>> If messages are persisted on RabbitMQ can someone interrogate the message
>> data by directly accessing the Mnesia tables? Or are the Mnesia tables
> only
>> for admin / configuration data?
>
> Mnesia only stores the routing tables and config data.
>
>
>> Basically I have a setup where I would like to be able to see message
>> details on the queue/s without pulling the messages off.....
>
> Ah yes :-)
>
> I don't think this is currently supported.
>
>
>> If the messages are not persisted to Mnesia where are they kept? In a file
>> on disk?
>
> Yes, that is correct.  Messages are journalled to disk for recovery.
>
> One thing that people have asked for is 'pluggable persistence' in
> which messages can also be stored in $YOUR_FAVOURITE_DATABASE
>
> alexis
>
>
>
>
>> Thanks for the help, much appreciated ;-)
>>
>>
>>
>> Lynton
>>
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>>
>>
>
>