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#! /bin/sh
# This script parses /var/log/syslog for messages from programs that log
# uptime and disk stats (number of sectors read). It then outputs
# these stats in a format usable by the metrics collector, which forwards
# them to autotest and UMA.
# To add a new metric add a line below, as PROGRAM_NAME METRIC_NAME.
# PROGRAM_NAME is the name of the job whose start time we
# are interested in. METRIC_NAME is the prefix we want to use for
# reporting to UMA and autotest. The script prepends "Time" and
# "Sectors" to METRIC_NAME for the two available measurements, uptime
# and number of sectors read thus far.
# You will need to emit messages similar to the following in order to add a
# a metric using this process. You will need to emit both a start and stop
# time and the metric reported will be the difference in values
# Nov 15 08:05 localhost PROGRAM_NAME[822]: start METRIC_NAME time 12 sectors 56
# Nov 15 08:05 localhost PROGRAM_NAME[822]: stop METRIC_NAME time 24 sectors 68
# If you add metrics without a start, it is assumed you are requesting the
# time differece from system start
# Metrics we are interested in measuring
METRICS="
upstart start_x
"
first=1
program=""
# Get the metrics for all things
for m in $METRICS
do
if [ $first -eq 1 ]
then
first=0
program_name=$m
else
first=1
metrics_name=$m
# Example of line from /var/log/messages:
# Nov 15 08:05:42 localhost connmand[822]: start metric time 12 sectors 56
# "upstart:" is $5, 1234 is $9, etc.
program="${program}/$program_name([[0-9]+]:|:) start $metrics_name/\
{
metrics_start[\"${metrics_name}Time\"] = \$9;
metrics_start[\"${metrics_name}Sectors\"] = \$11;
}"
program="${program}/$program_name([[0-9]+]:|:) stop $metrics_name/\
{
metrics_stop[\"${metrics_name}Time\"] = \$9;
metrics_stop[\"${metrics_name}Sectors\"] = \$11;
}"
fi
done
# Do all the differencing here
program="${program}\
END{
for (i in metrics_stop) {
value_time = metrics_stop[i] - metrics_start[i];
print i \"=\" value_time;
}
}"
exec awk "$program" /var/log/syslog
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