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81 lines
1.8 KiB
Bash
Executable File
81 lines
1.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-FileCopyrightText: 2020 Umbrel. https://getumbrel.com
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# SPDX-FileCopyrightText: 2021 Citadel and contributors.
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#
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# SPDX-License-Identifier: AGPL-3.0-or-later
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# karen watches for signals and executes triggers in the events dir
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# karen gets triggered a lot
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check_root () {
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if [[ $UID != 0 ]]; then
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echo "Error: This script must be run as root."
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echo "Can I speak to a manager please?"
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exit 1
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fi
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}
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check_if_not_already_running() {
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if ps ax | grep $0 | grep -v $$ | grep bash | grep -v grep
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then
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echo "karen is already running"
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exit 1
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fi
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}
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check_dependencies () {
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for cmd in "$@"; do
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if ! command -v $cmd >/dev/null 2>&1; then
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echo "This script requires \"${cmd}\" to be installed"
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exit 1
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fi
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done
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}
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check_root
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check_if_not_already_running
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check_dependencies fswatch readlink dirname
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if [[ -n "$1" ]]; then
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root_dir="$(readlink -f $1)"
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else
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root_dir="$(dirname $(readlink -f ${BASH_SOURCE[0]}))/events"
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fi
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signal_dir="$root_dir/signals"
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trigger_dir="$root_dir/triggers"
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if [[ ! -d "$root_dir" ]]; then
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echo "Root dir does not exist '$root_dir'"
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exit 1
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fi
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echo "karen will start in 30 seconds"
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sleep 30
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echo "karen is running in $root_dir"
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fswatch -0 --event=AttributeModified $signal_dir | while read -d "" event; do
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signal="${event#"$signal_dir"}"
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signal="${signal#"/"}"
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trigger="$trigger_dir/$signal"
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args=""
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echo "Got signal: $signal"
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# If the signal starts wih app-, the trigger is "$trigger_dir/app"
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# and the args are the rest of the signal
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if [[ "$signal" =~ ^app- ]]; then
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trigger="$trigger_dir/app"
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args="${signal#"app-"}"
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fi
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if test -x "$trigger"; then
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echo "karen is getting triggered!"
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if [[ ! -f "statuses/update-in-progress" ]]; then
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"$trigger" $args &
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fi
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else
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echo "No trigger found"
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fi
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done
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