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#!/usr/bin/env bash
# Use this script to test if a given URL is responding
#
# Usage:
# ./wait-for-it.sh --url http://0.0.0.0:8000/health --strict -- node /app/app/server.js
url=""
cmd=""
strict=""
while [[ $# -gt 0 ]]
do
key="$1"
case $key in
--url)
url="$2"
shift # past argument
shift # past value
;;
--)
shift
cmd="$@"
break
;;
--strict)
strict="true"
shift # past argument
;;
*)
echo "Unknown option: $key"
exit 1
;;
esac
done
if [[ -z "$url" ]]; then
echo "URL is required"
exit 1
fi
wait_for_url() {
response=$(curl --write-out "%{http_code}" --silent --output /dev/null "$1")
if [[ "$response" -eq 200 ]]; then
return 0
else
return 1
fi
}
if [[ "$strict" == "true" ]]; then
echo "wait-for-it.sh: waiting for $url without a timeout"
while ! wait_for_url "$url"; do
sleep 1
done
echo "wait-for-it.sh: $url is available"
else
echo "wait-for-it.sh: waiting for $url with a timeout of 15 seconds"
timeout=15
while ! wait_for_url "$url"; do
sleep 1
timeout=$((timeout - 1))
if [[ $timeout -eq 0 ]]; then
echo "wait-for-it.sh: timeout occurred after waiting for $url"
exit 1
fi
done
echo "wait-for-it.sh: $url is available"
fi
exec $cmd
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