Tail input plugin

[sparrc]

WIP, todo:

• parse and add each log message to the accumulator
• support glob file matching, as in the filestat plugin
• unit tests
• update changelog & readme
• write a plugin readme

[panda87]

Looks great @sparrc
Im wondering if kakfa output supports routing to a different topics by the tag or anything else.
Another question if it supports listening to docker.sock to retrieve docker containers logs (stdout,stderr)

[sparrc]

thanks @panda87, not sure what you mean about kafka, but I can look into support for tailing sockets

[sparrc]

looks like the "tail" doesn't work on unix sockets, I think that would need to be a separate plugin, more similar to the tcp_listener and udp_listener plugins

[panda87]

@sparrc I meant that, im using kafka as output plugin, and I think that be able to route logs (files) per kafka topic can be great advantage.
For example, syslog will go to one topic and application log to another.

[sparrc]

If you could open a separate feature request with more details and specific examples, that would be great.

Did you know that telegraf supports measurement filtering? I think this could be used to accomplish what you need. https://github.com/influxdata/telegraf/blob/master/docs/CONFIGURATION.md#measurement-filtering