[rabbitmq-discuss] Why is RabbitMQ not persisting messages on a durable queue?

[hekevintran]

It looks like the delivery mode is already set to 2:

    In [1]: from apps.test_app.tasks import add

    In [2]: add.delivery_mode
    Out[2]: 2

This default cannot be changed in celery as far as I know.

On Feb 18, 1:40 pm, "Gavin M. Roy" <g... at myyearbook.com> wrote:
> Not sure of the celery underpinnings for specifying persistent messages,
> perhaps it's documented, but you need to set the message delivery_mode = 2
> in the message properties when calling Basic.Publish.
>
>
>
> On Fri, Feb 18, 2011 at 4:19 PM, hekevintran <hekevint... at gmail.com> wrote:
> > I am using RabbitMQ with Django through Celery. I am using the most
> > basic setup:
>
> >    # RabbitMQ connection settings
> >    BROKER_HOST = 'localhost'
> >    BROKER_PORT = '5672'
> >    BROKER_USER = 'guest'
> >    BROKER_PASSWORD = 'guest'
> >    BROKER_VHOST = '/'
>
> > I imported a Celery task and queued it to run one year later. From the
> > iPython shell:
>
> >    In [1]: from apps.test_app.tasks import add
>
> >    In [2]: dt=datetime.datetime(2012, 2, 18, 10, 00)
>
> >    In [3]: add.apply_async((10, 6), eta=dt)
> >    DEBUG:amqplib:Start from server, version: 8.0, properties:
> > {u'information': 'Licensed under the MPL.  Seehttp://www.rabbitmq.com/',
> > u'product': 'RabbitMQ', u'version': '2.2.0', u'copyright': 'Copyright
> > (C) 2007-2010 LShift Ltd., Cohesive Financial Technologies LLC., and
> > Rabbit Technologies Ltd.', u'platform': 'Erlang/OTP'}, mechanisms:
> > ['PLAIN', 'AMQPLAIN'], locales: ['en_US']
> >    DEBUG:amqplib:Open OK! known_hosts []
> >    DEBUG:amqplib:using channel_id: 1
> >    DEBUG:amqplib:Channel open
> >    DEBUG:amqplib:Closed channel #1
> >    Out[3]: <AsyncResult: cfc507a1-175f-438e-acea-8c989a120ab3>
>
> > RabbitMQ received this message in the celery queue:
>
> >    $  rabbitmqctl list_queues name messages durable
> >    Listing queues ...
> >    KTMacBook.local.celeryd.pidbox      0       false
> >    celery      1       true
> >    celeryctl_KTMacBook.local   0       true
> >    ...done.
>
> > I then killed RabbitMQ by hitting control-C followed by 'a' to abort.
> > When I start the server again and check it with rabbitmqctl, it says
> > that there are no messages in the celery queue:
>
> >    $  rabbitmqctl list_queues name messages durable
> >    Listing queues ...
> >    celery      0       true
> >    celeryctl_KTMacBook.local   0       true
> >    ...done.
>
> > The celery queue was durable. Why were the messages not persisted?
> > What do I need to do to make the messages persistent?
> > _______________________________________________
> > rabbitmq-discuss mailing list
> > rabbitmq-disc... at lists.rabbitmq.com
> >https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss
>
>
>
> _______________________________________________
> rabbitmq-discuss mailing list
> rabbitmq-disc... at lists.rabbitmq.comhttps://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss