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tail
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15 Commits

Author SHA1 Message Date
Sridhar Ratnakumar aa3b7c3413 test: add test for "-n 0" 2012-10-13 12:02:38 -07:00
Sridhar Ratnakumar df3f97310f test: fixture workflow to make test functions concise 2012-10-13 11:44:47 -07:00
Sridhar Ratnakumar 4e53f618e2 first test case for tail 
tests "-n -1"

need to abstract operations for multiple workflow
 2012-10-13 11:20:04 -07:00
Sridhar Ratnakumar dfe0ea8ba5 optimize polling watcher using stat check 
does not send 'changed' events if the last modified time hasn't changed.
 2012-10-12 18:12:49 -07:00
Sridhar Ratnakumar adcb2e389d fix: BlockUntilExists should only return if filename matches 2012-10-12 17:30:45 -07:00
Sridhar Ratnakumar 507783a4a0 allow gotail to accept multiple files 
also rename cmd/tail to cmd/gotail
 2012-10-12 17:28:04 -07:00
Sridhar Ratnakumar 048bbf8933 introduce tail command; fix tomb blocking after Kill 2012-10-12 17:14:35 -07:00
Sridhar Ratnakumar 4bbf3d28cc gracefully manage goroutines death using tomb 
http://blog.labix.org/2011/10/09/death-of-goroutines-under-control
 2012-10-12 16:28:22 -07:00
Sridhar Ratnakumar 187dea7196 use struct to configure the growing tail args; start working on unit tests 2012-10-12 14:32:04 -07:00
Sridhar Ratnakumar f7193d4658 start working on tail's readme/example 2012-10-12 09:05:11 -07:00
Sridhar Ratnakumar 74f84016b8 close the inotify watcher when returning 
might fix http://bugs.activestate.com/show_bug.cgi?id=95803#c12
 2012-10-12 07:09:36 -07:00
Sridhar Ratnakumar 5c84486ca3 check the stop channel while waiting on inotify 
fixes http://bugs.activestate.com/show_bug.cgi?id=95718#c3
 2012-10-11 21:47:58 -07:00
Sridhar Ratnakumar 3ff602e781 Bug #95803 - reduce cpu usage due to frequent polling 
* use inotify for system log aggregation
* continue using polling for app log aggregation (overlayfs bug)
  * but increase wait time to 250ms

Squashed commit of the following:

commit 8ccd0359e559472be0066ad889ac1772e13ff20b
Author: Sridhar Ratnakumar <sridharr@activestate.com>
Date:   Thu Oct 11 21:28:41 2012 -0700

    complete the polling watcher

commit 0a5d5aa488e96aa247c7c88c25cd5a30219f5344
Author: Sridhar Ratnakumar <sridharr@activestate.com>
Date:   Thu Oct 11 20:50:08 2012 -0700

    hackish, untested, incomplete implementation of pollig filewatcher

    .. to be tested on macbook.

commit c7ac3851452ed23a8b099773cc9c9f23734a89f5
Author: Sridhar Ratnakumar <sridharr@activestate.com>
Date:   Thu Oct 11 15:45:59 2012 -0700

    tail: use inotify instead of polling

    reduces cpu usage and fixes  Bug #95803
 2012-10-11 21:29:35 -07:00
Sridhar Ratnakumar 6a5092ff5c Bug #95787: warn and ignore tailing app logs if their base dir (container) goes away fast 
.. but not for system logs as we expect /s/logs/ to exist.
 2012-10-10 15:13:13 -07:00
Sridhar Ratnakumar 99fe83b742 make tail.go its own package, independent of logyard 2012-10-09 15:13:05 -07:00