Raspberry Pi alarm clock server.
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#!/bin/bash
# Credit from: https://github.com/alexedwards/go-reload/tree/aabe19d0a9935d1238763a4a35e71787854cd5f5
####################################################
# @kirsle's custom changes from upstream are below #
####################################################
function die() {
echo >&2 $1
exit 1
}
# Before we crash and burn, make sure necessary programs are installed!
command -v inotifywait || die "I need the inotifywait command (apt install inotify-tools)"
################################
# end @kirsle's custom changes #
################################
function monitor() {
if [ "$2" = "true" ]; then
# Watch all files in the specified directory
# Call the restart function when they are saved
inotifywait -q -m -r -e close_write -e moved_to $1 |
while read line; do
restart
done
else
# Watch all *.go files in the specified directory
# Call the restart function when they are saved
inotifywait -q -m -r -e close_write -e moved_to --exclude '[^g][^o]$' $1 |
while read line; do
restart
done
fi
}
# Terminate and rerun the main Go program
function restart {
if [ "$(pidof $PROCESS_NAME)" ]; then
killall -q -w -9 $PROCESS_NAME
fi
echo ">> Reloading..."
eval "go run $ARGS &"
}
# Make sure all background processes get terminated
function close {
killall -q -w -9 inotifywait
exit 0
}
trap close INT
echo "== Go-reload"
WATCH_ALL=false
while getopts ":a" opt; do
case $opt in
a)
WATCH_ALL=true
;;
\?)
echo "Invalid option: -$OPTARG" >&2
exit 0
;;
esac
done
shift "$((OPTIND - 1))"
FILE_NAME=$(basename $1)
PROCESS_NAME=${FILE_NAME%%.*}
ARGS=$@
# Start the main Go program
echo ">> Watching directories, CTRL+C to stop"
eval "go run $ARGS &"
# Monitor all /src directories on the GOPATH
OIFS="$IFS"
IFS=':'
for path in $GOPATH
do
monitor $path/src $WATCH_ALL &
done
IFS="$OIFS"
# If the current working directory isn't on the GOPATH, monitor it too
if [[ $PWD != "$GOPATH/"* ]]
then
monitor $PWD $WATCH_ALL
fi
wait