#!/bin/sh
# description "executable which retrieves server metadata (TEXT)"
# author "Online Labs Cloud Team <cloud-team@labs.online.net>"

CODE=0
while [ $CODE -ne 200 ]
do
    METADATA_URL=${METADATA_URL:-"http://169.254.42.42/conf"}
    RESPONSE=$(curl --silent --write-out "\n%{http_CODE}\n" $METADATA_URL)
    CODE=$(echo "$RESPONSE" | sed -n '$p')
    BODY=$(echo "$RESPONSE" | sed '$d')

    test $CODE -eq 200 && break
    sleep 5
done

if [ "$#" -ne 1 ]; then
    echo "$BODY"
else
    key="$1"
    echo "$BODY" | grep "^$key=" | cut -d= -f2 | sed "s/^['\"]//;s/['\"]$//"
fi