status-react/scripts/wait-for.sh

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#!/usr/bin/env bash
set -e
TIMEOUT=${1}
shift
PGREP_OPTS=${@}
SLEEP_SEC=5
STEPS=$((TIMEOUT / SLEEP_SEC))
if [[ -z ${PGREP_OPTS} ]]; then
echo "No pgrep options name specified!" >&2
exit 1
fi
echo "Checking for process: '${PGREP_OPTS}'"
for ((i = 0; i < ${STEPS}; i += 1)); do
if pgrep ${PGREP_OPTS} > /dev/null; then
echo "Process found. Sleeping ${SLEEP_SEC}..." >&2
sleep ${SLEEP_SEC}
else
echo "Process '${PGREP_OPTS}' gone." >&2
exit 0
fi
done
echo "Timeout reached! (${TIMEOUT}s) Process still up: ${PGREP_OPTS}" >&2
exit 1