Cfengine 3 example unit_measure_log.html

#######################################################
#
# Test file: log scanner
#
#######################################################

#
# Look for a file in /var/cfengine/state/line_counter_measure.log 
#

bundle monitor watch
{
measurements:

   "/home/mark/tmp/file"

         handle => "line_counter",
    stream_type => "file",
      data_type => "counter",
    match_value => scan_log("MYLINE.*"),
   history_type => "log",
         action => sample_rate("0");

}

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body match_value scan_log(x)
{
select_line_matching => "^$(x)$";
track_growing_file => "true";
}

body action sample_rate(x)
{
ifelapsed => "$(x)";
expireafter => "10";
}