Data

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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