Re: Data

During update policy use a commands promise that populates the json. Then
you can use the read json function or similar during the regular policy
run.

On Wed, Dec 27, 2023, 3:56 PM Martin Simons <[email protected]> wrote:

> Dear CFEngineer,
>
> Fosdem and Configmanagement Camp are due in about one month.
> I will do a talk on external data for nodes, CFEngine nodes too, in a
> landscape.
> https://github.com/Webhuis/Data
>
> The idea is that a node sends a message to Data and then receives a tailor
> made set of data it can use for its operation. In principple Data serves
> any node that is able to send, receive and process a message.
>
> CFEngine nodes invoke a Python script in the bginning of the process.
> The nodes bother Data a bit too much, because they send the message nine
> times!
>
> Up to now I use the following line to obtain the data:
> "response"                           string =>
> execresult("/var/cfengine/bin/cf-message.py
> '$(node_hard_classes_feed)'","noshell");
>
> The requirements are:
> 1. The data should become available at the beginning of the run
> 2. The data has to be stored in the json format
> 3. The data has to become available in a variable, not on disk
>
> Is there a way to avoid the agent to send the message nine times?
>
> Regards,
> Martin.
>
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