150 lines
4.3 KiB
Bash
150 lines
4.3 KiB
Bash
#!/bin/sh
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# Copyright (c) 2015 The OpenRC Authors.
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# See the Authors file at the top-level directory of this distribution and
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# https://github.com/OpenRC/openrc/blob/HEAD/AUTHORS
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#
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# This file is part of OpenRC. It is subject to the license terms in
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# the LICENSE file found in the top-level directory of this
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# distribution and at https://github.com/OpenRC/openrc/blob/HEAD/LICENSE
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# This file may not be copied, modified, propagated, or distributed
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# except according to the terms contained in the LICENSE file.
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# Define variables
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scandir="/run/openrc/s6-scan"
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statfile=/dev/shm/s6-svstat.${USER}
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color_red='\E[01;31m'
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color_green='\E[32m'
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color_yellow='\E[01;33m'
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# Time Modules
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uptimeModules() {
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# Given a single integer argument representing seconds of uptime...
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# convert uptime to a friendly human readable string: '2d 16h 58m 46s'
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# define a variable to keep track of the longest length uptime string
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uSec=${1:-0}
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uDay=$(( $uSec / 86400 ))
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uSec=$(( $uSec % 86400 ))
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uHour=$(( $uSec / 3600 ))
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uSec=$(( $uSec % 3600 ))
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uMin=$(( $uSec / 60 ))
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uSec=$(( $uSec % 60 ))
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[ $uDay -ne 0 ] && pDay="${uDay}d " || pDay=""
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[ $uHour -ne 0 ] && pHour="${uHour}h " || pHour=""
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[ $uMin -ne 0 ] && pMin="${uMin}m " || pMin=""
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[ $uSec -ne 0 ] && pSec="${uSec}s " || pSec=""
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parsedUptime="$( echo ${pDay}${pHour}${pMin}${pSec} | sed 's#[ \t]*$##' )"
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uCharCount=${#parsedUptime}
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}
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# Make sure we are running as root
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if [ $(id -u) != 0 ]; then
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printf "This command must be run as root\n"
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exit 1
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fi
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# Make sure scandir exists
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if [ ! -d $scandir ]; then
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printf "%s\n" "$scandir does not exist"
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exit 1
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fi
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# Make sure s6-svscan is running
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if ! pgrep s6-svscan >/dev/null ; then
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printf "s6-svscan is not running\n"
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exit 1
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fi
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# If TERM is undefined (launching sstat through an ssh command) then make it vt100
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if [ -z $TERM -o $TERM = "dumb" ]; then
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export TERM=vt100
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fi
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# Gather list of candidate services s6-supervise may be supervising
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# filter for folders and symlinks at /run/openrc/s6-scan/* omitting output starting with '.'
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services="$(find $scandir -maxdepth 1 -mindepth 1 \( -type d -or -type l \) | awk -F'/' '{ if ( $NF !~ "^\\." ) print $NF}')"
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if [ -z "$services" ]; then
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printf "s6 found no services configured for supervision\n"
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exit 1
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fi
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# Gather status for each service from s6-svstat
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# write to tmp file in memory for non I/O bound repetitive access
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rm -f $statfile 2>/dev/null
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for service in $services ; do
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echo "$service $(s6-svstat ${scandir}/${service})" >> $statfile
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done
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# Define longest string from parsed uptime (default to 7 to match string length of 'Up Time')
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timeStringLength=7
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for uptime in $(awk '$2 == "up" {print $5}' $statfile | sort -run)
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do
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uptimeModules $uptime
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[ ${uCharCount} -gt $timeStringLength ] && timeStringLength=$uCharCount
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done
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# Print the status header like so...
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# Service Name State PID Up Time Start Time
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#---------------------------- ----- ----- -------------- -------------------
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printf "\n"
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printf "%28s %5s %5s %${timeStringLength}s %19s\n" "Service Name" "State" "PID" "Up Time" "Start Time"
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for dashes in 28 5 5 $timeStringLength 19 ; do
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printf "%0.s-" $(seq 1 $dashes) ; echo -n ' '
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done && printf "\n"
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# sshd up (pid 26300) 80373 seconds
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cat $statfile | \
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while read line
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do
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set $line
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service=$1
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state=$2
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pid=${4/)/}
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time=$5
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# call function to convert time in seconds and define additional variables
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uptimeModules $time
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if [ "$state" = up ]; then
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if [ $time -lt 30 ]; then
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# uptime < 30 seconds, color the whole line yellow
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echo -en "$color_yellow"
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# 1st 4 columns are printed with printf for space padding
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printf "%28s %5s %5s %${timeStringLength}s" $service $state $pid "$parsedUptime"
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# 4th column is output from date -d
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echo -e " $(date -d "${time} seconds ago" "+%F %T")"
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# reset terminal colors
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tput sgr0
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else
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printf "%28s" $service
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# uptime > 30 seconds, color just the "state" value green
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echo -en "$color_green"
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printf " %5s" $state
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# reset terminal colors
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tput sgr0
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printf " %5s" $pid
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printf " %${timeStringLength}s" "$parsedUptime"
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echo -e " $(date -d "${time} seconds ago" "+%F %T")"
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fi
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else
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printf "%28s" $service
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echo -en "$color_red"
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printf " %5s" $state
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tput sgr0
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echo ""
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fi
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done
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# Cleanup
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rm -f $statfile 2>/dev/null
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printf "\n\n"
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rc-status
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