Zabbix: LowLevelDiscovery json/data wrapper (needed for legacy versions)

lld-wrapper.sh

#!/bin/bash

# usage:
# $ cat input.txt
# dom01
# dom02
# dom10
# dom23
#
# cat input.txt | ./lld-wrapper.sh "#FOO"

# initialize data
echo '{"data":['
# read all lines from stdin
while read line
do
        arr_lines+="$last "
        last=$line
done < "${2:-/dev/stdin}"

# build the first lines
for arr_line in $arr_lines; do
        echo "    {\"{$1}\":\"$arr_line\"},"
done
# build the last line
echo "    {\"{$1}\":\"$last\"}"

# terminate data
echo ']}'