check_nt-collectd.sh

#!/bin/bash
# Desc: Collectd's plugin script
# Calls check_nt nagios plugin and parse it's output with
# userdefine `perl -lape' program... and submit the parsed output
# with echo "PUTVAL @HOSTNAME@/@PLUGIN@/@INSTANCE@ INTERVAL=$INTERVAL N:$OUTPUT
# @XXX@ are command line arguments
# $XXX are values computed at run time

LOGFILE=/dev/null


log() {
    echo $(date) $* >> $LOGFILE
}

log "Called as $0 $*"

PERL=/usr/bin/perl
HOSTNAME=$1
shift
PLUGIN_NAME=$1
shift
INSTANCE=$1
shift
HOSTADDR=$1
shift
PORT=$1
shift
VARIABLE=$1
shift
PERL_REGEX_PROGRAM=$1
shift

PLUGINS_DIR=/usr/lib/nagios/plugins
INTERVAL=10

usage() {
    echo "$0: <HOSTNAME> <PLUGIN_NAME> <INSTANCE> <HOSTADDR> <PORT> <VARIABLE> <PERL_REGEX_PROGRAM> <ARGUMENTS TO BE PASSED DO check_nt AS \$*>"
}

get_output() {
    OUTPUT=$($PLUGINS_DIR/check_nt -H $HOSTADDR -p $PORT -v $VARIABLE $*)
    log "get_output returns: $OUTPUT"
    echo "$OUTPUT"
}

parse_output() {
    OUTPUT=$(get_output $*)
    PARSED_OUTPUT=$(echo $OUTPUT | $PERL -lape "$PERL_REGEX_PROGRAM")
    log "parse_output with \"$PERL_REGEX_PROGRAM\" returns: \"$PARSED_OUTPUT\""
    if test -z $PARSED_OUTPUT; then
    echo "Can't parse output \"$OUTPUT\" with \"$PERL_REGEX_PROGRAM\""
    log "Can't parse output \"$OUTPUT\" with \"$PERL_REGEX_PROGRAM\""
    exit 1
    fi
    echo $PARSED_OUTPUT
}


if test -z "$HOSTNAME" -o -z "$HOSTADDR" -o -z "$PORT" -o \
        -z "$PLUGIN_NAME" -o -z "$VARIABLE" -o -z "$PERL_REGEX_PROGRAM"; then
    usage
    exit 0
fi

while :; do
    VALUE=$(parse_output $*)
    SUBMIT="PUTVAL \"$HOSTNAME/$PLUGIN_NAME/$INSTANCE\" interval=$INTERVAL N:$VALUE"
    log "Submitting: $SUBMIT"
    echo $SUBMIT
    sleep $INTERVAL
done


exit 1 # This should never happen