[rabbitmq-discuss] Erlang client and properties
matthias at lshift.net
Sat Nov 8 06:53:13 GMT 2008
Ben Hood wrote:
> I'll let Matthias answer these questions as he is reviewing the
> upcoming 0.9.1 spec.
Err, thanks. 0-9-1 doesn't actually answer most of these, though some
did come up during the 0-10 discussions.
>> What is the format of the timestamp field, and how do I encode/decode it?
"64-bit POSIX time_t format with an accuracy of seconds", according to
the spec. 0-10 labels this type "datetime".
>> When and by what does the timestamp get set? I searched all the client code
>> for 'timestamp' but could not find it, so when I create a new message, what
>> sets this?
Nothing in the RabbitMQ code base sets the timestamp. It is up to
>> What is the format of the expiration? The spec does not define it.
In 0-10 the type has changed to type "datetime".
>> What is the behavior when a message has expired? Does the client
>> automatically throw it away when doing a basic.get or consume so I never see
The 0-10 spec says
"Messages that live longer than their expiration time will be discarded
(or dead lettered)."
RabbitMQ currently does not implement this feature, but it is on our
>> Does the message_id ever get set automatically to a unique value?
>> What is the purpose of the 'type' property? The spec just writes "message
>> type name"? Is this totally user-defined?
'type' is a user-defined field.
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