Hi --
(Please contact me by direct email for clarifications and/or follow up, I am
not subscribed to the mailing list.)
I wrote a collectd Java plugin that publishes the written value lists to an
Apache Kafka topic. If possible, I'd like to batch in the same message values
related to each other.
For example, instead of publishing 3 separate messages corresponding to what's
coming from the memory plugin:
{"info":{"collectionTimestamp":"2013-02-26T10:58:17.829-08:00","host":"dragosm-linux","plugin":"memory","type":"memory","pi":"","ti":"used"},"readings":[{"name":"value","type":"gauge","value":5.00625408E8}]}
{"info":{"collectionTimestamp":"2013-02-26T10:58:17.830-08:00","host":"dragosm-linux","plugin":"memory","type":"memory","pi":"","ti":"buffered"},"readings":[{"name":"value","type":"gauge","value":5.4493184E7}]}
{"info":{"collectionTimestamp":"2013-02-26T10:58:17.830-08:00","host":"dragosm-linux","plugin":"memory","type":"memory","pi":"","ti":"cached"},"readings":[{"name":"value","type":"gauge","value":3.43908352E8}]}
If viable I would like to send a single message that contains used, buffered
and cached together. I have two questions about doing that:
1. Are the writes from the same plugin/type/plugin instance atomic? So far
I've never seen writes from different plugins interleaved but I don't want to
assume that.
2. Is there a mechanism that signals when a plugin starts/stops writing (or
alternatively to determine in advance how many writes the plugin is going to
make) so I could batch the values together?
Thanks,
-Dragos
_______________________________________________
collectd mailing list
[email protected]
http://mailman.verplant.org/listinfo/collectd
