Topic Symliks
25 views
Skip to first unread message
ctm
Dec 18, 2015, 5:56:04 AM12/18/15
to MQTT
The hardware world is very different from the way humans perceive the world and this will also be the case for IoT.
Is there a way to create symlinks of topics so that topic RasPi2B/e79e682355/I2C/2eeb209902/temp can be mapped to topic MyHous/MyRoom/CeilFan/Temp?
I know that one could subscribe and republish, but that would seem a waste of resources. Do brokers not do this internally in any case to increase efficiency?
The use of symlinks would make much sense in a service -provider and -consumer model. A vendor might publish VIN7746889237456/Bosch77EM/CO2/S32 and I will like to consume it as FarmerBrown/Tractor994/CO2Emission. This will allow the service provider to maintain his plant and the consumer to claculate how much CO2 is consumed per widget sold.
Is there any ideas around this?
Roger Light
Dec 19, 2015, 5:10:17 AM12/19/15
to mq...@googlegroups.com
Hi,
You can achieve this entirely in the broker if you bridge the broker to itself.
Cheers,
Roger
> --
> To learn more about MQTT please visit http://mqtt.org
> ---
> You received this message because you are subscribed to the Google Groups
> "MQTT" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to mqtt+uns...@googlegroups.com.
> To post to this group, send email to mq...@googlegroups.com.
> Visit this group at https://groups.google.com/group/mqtt.
> For more options, visit https://groups.google.com/d/optout.
You can achieve this entirely in the broker if you bridge the broker to itself.
Cheers,
Roger
> To learn more about MQTT please visit http://mqtt.org
> ---
> You received this message because you are subscribed to the Google Groups
> "MQTT" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to mqtt+uns...@googlegroups.com.
> To post to this group, send email to mq...@googlegroups.com.
> Visit this group at https://groups.google.com/group/mqtt.
> For more options, visit https://groups.google.com/d/optout.
Stefano Costa
Dec 19, 2015, 5:42:49 AM12/19/15
to mq...@googlegroups.com
This is a very interesting idea!
--
--
Stefano Costa
R&D, Managing Director
Skype stefanocosta.bluewind
ctm
Dec 21, 2015, 12:10:08 AM12/21/15
to MQTT, ro...@atchoo.org
@Roger: Yes, you could.
Will it not be more efficient and reliable if the broker did it?
c-:
Karl Palsson
Dec 21, 2015, 10:31:24 AM12/21/15
to mq...@googlegroups.com, Roger Light
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
ctm <ctm...@gmail.com> wrote:
> @Roger: Yes, you could.
>
> Will it not be more efficient and reliable if the broker did
> it?
>
The broker is doing it. Or do you want add extra code just used
for this single purpose, instead of reusing the existing code for
an existing function? That sounds way more reliable.
Cheers,
Karl P
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=kHDB
-----END PGP SIGNATURE-----
Hash: SHA1
ctm <ctm...@gmail.com> wrote:
> @Roger: Yes, you could.
>
> Will it not be more efficient and reliable if the broker did
> it?
>
for this single purpose, instead of reusing the existing code for
an existing function? That sounds way more reliable.
Cheers,
Karl P
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=kHDB
-----END PGP SIGNATURE-----
Reply all
Reply to author
Forward
0 new messages