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#!/bin/bash
set -exo pipefail
if [ -z ${INOTIFY_HOOK_SCRIPT+x} ]; then
echo "Missing INOTIFY_HOOK_SCRIPT environment variable, set it to the script to run upon file changes";
exit 1;
else
if ! test -f $INOTIFY_HOOK_SCRIPT; then
echo "The file pointed to by INOTIFY_HOOK_SCRIPT does not exist, check your container mounts.";
exit 1;
fi;
if ! test -x $INOTIFY_HOOK_SCRIPT; then
echo "INOTIFY_HOOK_SCRIPT is not an executable file (missing +x bit), check file permissions of the hook script."
exit 1;
fi;
fi;
if [ -n "$WATCH_EVENTS" ]; then
ADDITIONAL_ARGS="-e $INOTIFY_WATCH_EVENTS"
else
ADDITIONAL_ARGS=""
fi
if [ -n "$INOTIFY_WATCH_DIRECTORY" ]; then
WATCH_DIR="$INOTIFY_WATCH_DIRECTORY"
else
WATCH_DIR="/opt/monitor"
fi
while inotifywait $ADDITIONAL_ARGS -r $WATCH_DIR; do
if [ -z ${INOTIFY_HOOK_DELAY+x} ]; then
echo "Waiting $INOTIFY_HOOK_DELAY until executing hook..."
sleep $INOTIFY_HOOK_DELAY
fi
$INOTIFY_HOOK_SCRIPT
done;
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