wmstartup: Move common service functions out of individual services

.config/dtfscripts/common_service.sh

@@ -0,0 +1,67 @@
+#! /usr/bin/env bash
+#
+# wmstartup service common functions
+# Copyright (C) 2018 salt <salt@lap-th-e560-0>
+#
+# Distributed under terms of the MIT license.
+#
+
+service_name="unnamed_service"
+service_process="true"
+service_kill_on_reload="true"
+service_flags=""
+
+function svc_log() {
+	if [ -z ${1+x} ]; then return 1; fi
+	dtf_log "$service_name: $1"
+}
+
+function prestart() {
+	if pgrep $service_process > /dev/null 2>&1; then
+		svc_log "Already running"
+		return 1
+	fi
+	if ! which $service_process > /dev/null 2>&1; then
+		svc_log "Could not find process"
+		return 1
+	fi
+	if ! prestart-extra; then
+		return 1
+	fi
+	return 0
+}
+
+function prestart-extra() {
+	return 0
+}
+
+function start() {
+	svc_log "Starting"
+	$service_process $service_flags > /dev/null 2>&1 &
+	return 0
+}
+
+function stop() {
+	svc_log "Stopping"
+	killall $service_process &
+	for i in {1..100}; do
+		if ! isup; then break; fi
+		sleep 0.01
+		if (( $i > 99 )); then
+			svc_log "Stopping with prejudice"
+			killall -9 $service_process
+		fi
+	done
+	return $?
+}
+
+function isup() {
+	pgrep "$service_process" > /dev/null 2>&1
+	isup-extra $?
+	return $?
+}
+
+function isup-extra() {
+	return $1
+}
+