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|
#!/bin/sh
SLEEP=10
PRINT=false
CALCULATE=false
REDRAW=false
SILENT=false
EXIT_ON_ERROR=false
WATCH=false
MYSQL_HOST="localhost"
COMPARE_TYPE="eq"
COMMAND=""
COMMAND_NOK=""
usage() {
printf "$0 [options] <query> <target>\n"
printf " -H <host> Mysql host\n"
printf " -u <user> Mysql user\n"
printf " -d <database> Mysql database\n"
printf " -t <compare_type> eq, lt or gt, defaults to eq\n"
printf " -n <frequency> How often to run sql query\n"
printf " -c <command> Command to run when target is reached\n"
printf " -l <command> Command to run when target is no longer reached, but has been reached\n"
printf " -w Watch mode, this will stop the program from exiting when target is reached,\n"
printf " but continue to run command each time criteria is triggered. \n"
printf " -p Print the current value for each check\n"
printf " -P Print only on same line (also enables -p)\n"
printf " -k C(k)alculate estimation until target\n"
printf " -s Silent mode, print only minimal info\n"
printf " -e Exit on error\n"
}
while getopts "H:u:d:c:t:n:l:pPewkh" opt; do
case ${opt} in
H )
MYSQL_HOST="$OPTARG"
;;
u )
MYSQL_USER="$OPTARG"
;;
d )
MYSQL_DATABASE="$OPTARG"
;;
t )
COMPARE_TYPE="$OPTARG"
;;
n )
SLEEP="$OPTARG"
;;
c )
COMMAND="$OPTARG"
;;
l )
COMMAND_NOK="$OPTARG"
;;
p )
PRINT=true
;;
P )
PRINT=true
REDRAW=true
;;
w )
WATCH=true
;;
k )
CALCULATE=true
;;
s )
SILENT=true
;;
e )
EXIT_ON_ERROR=true
;;
h )
usage
exit 0
;;
\? )
echo "Invalid option: $OPTARG" 1>&2
exit 1
;;
: )
echo "Option -$OPTARG requires an argument." 1>&2
exit 1
;;
esac
done
shift $((OPTIND -1))
if [ -z "$1" ]; then
echo "Error: <query> argument is missing." >&2
usage
exit 1
fi
QUERY="$1"
if [ -z "$2" ]; then
echo "Error: <target> argument is missing." >&2
usage
exit 1
fi
TARGET="$2"
if [ -z "$MYSQL_HOST" ]; then
echo "Error: -H <host> argument is missing." >&2
usage
exit 1
fi
if [ -z "$MYSQL_USER" ]; then
echo "Error: -u <user> argument is missing." >&2
usage
exit 1
fi
if [ -z "$MYSQL_DATABASE" ]; then
echo "Error: -d <database> argument is missing." >&2
usage
exit 1
fi
PWD_SET_HERE=false
if [ -z "$MYSQL_PWD" ]; then
read -s -p "Enter password: " MYSQL_PWD
echo
export MYSQL_PWD
PWD_SET_HERE=true
fi
TARGET_OK=false
LAST=0
ELAPSED_TIME=0
LAST_CHANGE=0
while true; do
RESULT=$(mysql -u"$MYSQL_USER" -h"$MYSQL_HOST" "$MYSQL_DATABASE" -e "$QUERY" --batch --silent)
if [ ! "$?" = "0" ]; then
tput setaf 1
>&2 echo "[$(date)]: MySQL Error!"
tput sgr0
if [ "$EXIT_ON_ERROR" = true ]; then
exit 1
fi
TARGET_OK=false
sleep $SLEEP
continue
fi
if [ "$PRINT" = true ]; then
if [ "$REDRAW" = true ]; then
tput cr
tput el
fi
if [ "$SILENT" = false ]; then
printf "[$(date)]: "
fi
printf "${RESULT}"
if [ "$CALCULATE" = true ]; then
CHANGE=$(python -c "print(int(abs($RESULT-$LAST)))" 2> /dev/null)
ELAPSED_TIME=$(($ELAPSED_TIME+$SLEEP))
LAST=$RESULT
if [ $CHANGE -ne 0 ]; then
remaining_time=$(( (TARGET - RESULT) * ELAPSED_TIME / CHANGE ))
remaining_time=$(python -c "print(abs($remaining_time))")
LAST_CHANGE=$CHANGE
fi
EST=$(($(date +%s)+$remaining_time))
printf " ~ $LAST_CHANGE/s ETA $(date -d @$EST) "
tput bold
printf "[$(date -u +"%T" -d "@${remaining_time}")]"
tput sgr0
fi
if [ ! "$REDRAW" = true ]; then
printf "\n"
fi
fi
_TARGET_OK=false
if [ "$COMPARE_TYPE" = "eq" ]; then
if [ "$RESULT" = "$TARGET" ]; then
_TARGET_OK=true
SIGN_OK="="
SIGN_NOK="="
fi
elif [ "$COMPARE_TYPE" = "lt" ]; then
if (( RESULT < TARGET )); then
_TARGET_OK=true
SIGN_OK=">"
SIGN_NOK="<"
fi
elif [ "$COMPARE_TYPE" = "gt" ]; then
if (( RESULT > TARGET )); then
_TARGET_OK=true
SIGN_OK="<"
SIGN_NOK=">"
fi
fi
if [ "$_TARGET_OK" = true ]; then
if [ "$TARGET_OK" = false ]; then
if [ "$SILENT" = false ]; then
if [ "$PRINT" = true ]; then
printf "[$(date)]: Target "
tput setaf 2
printf "OK "
tput sgr0
tput sitm
printf "$TARGET "
tput ritm
printf "$SIGN_OK "
tput bold
printf "$RESULT\n"
tput sgr0
fi
fi
if [ ! "$COMMAND" = "" ]; then
sh -c "$COMMAND"
fi
fi
TARGET_OK=true
if [ "$WATCH" = false ]; then
break
fi
else
if [ "$TARGET_OK" = true ]; then
if [ "$SILENT" = false ]; then
if [ "$PRINT" = true ]; then
printf "[$(date)]: Target "
tput setaf 1
printf "NOK "
tput sgr0
tput sitm
printf "$TARGET "
tput ritm
printf "$SIGN_NOK "
tput bold
printf "$RESULT\n"
tput sgr0
fi
fi
if [ ! "$COMMAND_NOK" = "" ]; then
sh -c "$COMMAND_NOK"
fi
fi
TARGET_OK=false
fi
sleep $SLEEP
done
if [ "$PWD_SET_HERE" = true ]; then
unset MYSQL_PWD
fi
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