sarreport

#!/bin/bash
# sarreport: Currently returns relevant data prior to a reboot event.
# Written very quickly by Kyle Walker kwalker@redhat.com

getopt_outputs=$(getopt -o aB:E:dhcCm: -n "sarreport" -- "$@");

if [[ $# -eq 0  || $1 == "-h" ]]; then
	echo "sarreport: Returns relevant sar data prior to a restart"
        echo "Usage: sarreport [options] <sarfile>"
        echo -e "\tOptions:"
        echo -e "\t\tNo options - Reports CPU utilization, Memory use, and Load"
        echo -e "\t\t-d\t\tDebugging information such as the times that are being used for search"
        echo -e "\t\t-m\t\tSelect restart: Can be used to select a restart event that is not the first"
        echo -e "\t\t-B [val]\tChange the number of hours prior to the reboot to return"
        echo -e "\t\t-a\t\tReturn all metrics available not just the defaults above"
        echo -e "\t\t-c\t\tShort CPU output: only displays \"all\" entries"
        echo -e "\t\t-C\t\tFull CPU output: displays all CPU entries"
        echo -e "\t\t-E ##\t\tManually set the end time indicated as ##"
        echo -e "\t\t-h\t\tThis message"
	exit
fi
if [ ! -e $BASH_ARGV ]; then
	echo -e "\tError: File does not exist"
	exit
fi 

eval set -- "$getopt_outputs"

if [ ! `grep RESTART -i $BASH_ARGV -c` -eq 0 ]; then
	time1=(`grep RESTART -i $BASH_ARGV | cut -d':' -f 1`)
else
	time1=`tail -3 $BASH_ARGV | head -1 | cut -d ':' -f 1`
fi
restarts=`grep RESTART -i $BASH_ARGV -c`
selected=0
sysall=1
hoursprior=1
runmode=0

while true; do
	case "$1" in
		-m)
			shift
			if [ $1 -le $restarts ]; then
				let selected=$(($1-1))
			else
				echo "Incorrect selection, setting to the first iteration"
			fi
			shift
			;;
		-a)
			if [ $runmode==0 ]; then
				runmode=1
			else
				echo "Incompatible option set: -a, -d cannot be used together at this time"
			fi
			shift
			;;
		-B)
			shift;
			if [ -n "$1" ]; then
				hoursprior=$1
				shift;
			fi
			;;
		-c)
			sysall=1
			shift
			;;
		-C)
			sysall=0
			shift
			;;
		-d)
			if [ $runmode==0 ]; then
				runmode=2
			else
				echo "Incompatible option set: -a, -d cannot be used together at this time"
			fi
			shift;
			;;
		-E)
			shift
			if [ $1 -le 24 ]; then
				time1=$1
				runmode=4
			else
				echo "Incorrect value provided, defaulting to scraped restart event"
			fi
			shift;
			;;
		--)
			break
			;;
	esac
done

let time2=$((10#${time1[$selected]}))-$hoursprior;

case $runmode in
4)
	awk     'BEGIN {x=0;triggered=0; if("'$sysall'" == 1) sysall=1;else sysall=0; syssub=0; upperLim='"${time1[$selected]}"'; lowerLim='"$time2"'; if(length(lowerLim)<2) lowerLim="0"lowerLim}
		/iowait|kbmemfree|ldavg/,/^$/ {
			if(sysall==1) {
				if(syssub==0 && $0~/iowait/) {
					syssub++
					x++
					printer[x] = $0
				}
				if(syssub==1 && substr($1,0,2) <= upperLim && substr($1,0,2) >= lowerLim && $0~/all/ || $0~/Average|^$/ && $0~/all/) {
					x++
					printer[x] = $0
				}
				else if(syssub==1 && $0~/^$/) {
					syssub=0
					x++
					printer[x] = $0
				}
				else if(syssub==0) {
					if(substr($1,0,2) <= upperLim && substr($1,0,2) >= lowerLim) {
						x++
						printer[x] = $0
					}
					else if($0~/kbmemfree|ldavg|^$|Average:/) {
						x++
						printer[x] = $0
					}
				}
			}
			else {
				if(syssub==0 && $0~/iowait/) {
					syssub++
					x++
					printer[x] = $0
				}
				if(syssub==1 && substr($1,0,2) <= upperLim && substr($1,0,2) >= lowerLim || $0~/Average:|^$/) {
					x++
					printer[x] = $0
				}
				else if(syssub==1 && $0~/^$/) {
					syssub=0
					x++
					printer[x] = $0
				}
				else if(syssub==0) {
					if(substr($1,0,2) <= upperLim && substr($1,0,2) >= lowerLim) {
						x++
						printer[x] = $0
					}
					else if($0~/kbmemfree|ldavg|^$/ || 0~/Average:/){
						x++
						printer[x] = $0
					}
				}	
			}
		}
		END {
			if(x > 0) {
				for(i=0; i<=x; i++) {
					if(printer[i+1] !~/Average|^$/)
						print printer[i]
				}
			}
			else 
				exit
		}' $BASH_ARGV
	exit
	;;
2)
	echo time       = ${time1[$selected]}
	echo time[@]    = ${time1[@]}
	echo hoursprior = $hoursprior
	echo time2      = $time2
	echo selected   = $selected
	exit
	;;
1)
	if [ ! $restarts -eq 0 ]; then
		echo -e "There are $restarts reboot events in this sar file, now showing number $((selected+1))"
		awk 'BEGIN { 
			triggered=0
			if("'$sysall'" == 1) sysall=1; else sysall=0
			selecter='"$selected"'
			syssub=0
			upperLim='"${time1[$selected]}"'
			lowerLim='"$time2"'
			if(length(lowerLim)<2) lowerLim="0"lowerLim
		} 
		/RESTART/ {
			if(triggered==0) print
			triggered++
		} 
		/00:00/,/^$/ {
			if(triggered==0) {
				if($1 >= lowerLim || $1~/^00:00/)
					print $0
			}
		}
		/^$/ {
			if(triggered==0) print
		}' $BASH_ARGV
	else
		echo -e "There are $restarts restarts in this sar file\n"
	fi
	exit
	;;

*)
	if [ ! $restarts -eq 0 ]; then
		echo -e "There are $restarts reboot events in this sar file, now showing number $(($selected+1))\n"
		awk     'BEGIN { triggered=0; headerprinted = 0; if("'$sysall'" == 1) sysall=1;else sysall=0; selecter='"$selected"'; syssub=0; upperLim='"${time1[$selected]}"'; lowerLim='"$time2"'; if(length(lowerLim)<2) lowerLim="0"lowerLim}
			/RESTART/ {
				if(triggered==selecter) {
					print
				}
				triggered++
			}
			/iowait|kbmemfree|ldavg/,/^$/ {
				if(triggered==selecter) {
					if(sysall==1) {
						if(syssub==0 && $0~/iowait/) {
							syssub++
							print
						}
						if(syssub==1 && substr($1,0,2) <= upperLim && substr($1,0,2) >= lowerLim && $0~/all/ || $0~/Average|^$/ && $0~/all/) {
							print
							headerprinted=0
						}
						else if(syssub==1 && $0~/^$/) {
							syssub=0
							print
						}
						else if(syssub==0) {
							if(substr($1,0,2) <= upperLim && substr($1,0,2) >= lowerLim)
								print
							else if($0~/kbmemfree|ldavg|^$|Average:/ && headerprinted == 0)
								print
						}
					}
					else {
						if(syssub==0 && $0~/iowait/) {
							syssub++
							print
						}
						if(syssub==1 && substr($1,0,2) <= upperLim && substr($1,0,2) >= lowerLim || $0~/Average:|^$/) {
							print
						}
						else if(syssub==1 && $0~/^$/) {
							syssub=0
							print
						}
						else if(syssub==0) {
							if(substr($1,0,2) <= upperLim && substr($1,0,2) >= lowerLim)
								print
							else if(($0~/kbmemfree|ldavg|^$/ || 0~/Average:/) && (headerprinted == 0))
								print
						}	
					}
				}
			}' $BASH_ARGV
	else
		echo -e "There are $restarts restarts in this sar file\n"
	fi
	exit
	;;
esac