Smarter reload #13

Fixes #13

openwisp-config/files/openwisp.agent

@@ -46,6 +46,7 @@ CONFIGURATION_BACKUP="$WORKING_DIR/backup.tar.gz"
 REGISTRATION_PARAMETERS="$WORKING_DIR/registration_parameters"
 TEST_CHECKSUM="$WORKING_DIR/test_checksum"
 STATUS_REPORT="$WORKING_DIR/status_report"
+APPLYING_CONF="$WORKING_DIR/applying_conf"
 REGISTRATION_URL="$URL/controller/register/"
 DEFAULT_DIR="/etc/openwisp-config-defaults"
 FETCH_COMMAND="curl -s"
@@ -292,12 +293,18 @@ update_configuration() {
 		return 3
 	fi
 
+	# control file to avoid reloading the agent while
+	# configuration is still being applied
+	touch $APPLYING_CONF
+
 	if [ "$TEST_CONFIG" == "1" ]; then
 		test_configuration $CONFIGURATION_ARCHIVE
 	else
 		apply_configuration $CONFIGURATION_ARCHIVE
 	fi
 
+	rm $APPLYING_CONF
+
 	if [ "$?" == "0" ]; then
 		logger -s "Configuration applied" \
 		       -t openwisp \

openwisp-config/files/openwisp.init

@@ -65,3 +65,20 @@ stop_service() {
 	       -t openwisp \
 	       -p daemon.info
 }
+
+reload_service() {
+	logger -s "$PROG_NAME received reload trigger" \
+		   -t openwisp \
+		   -p daemon.info
+	# avoid reloading while configuration is being applied
+	# will wait for a maximum of 30 seconds
+	for i in $(seq 1 30); do
+		if [ -f "/tmp/openwisp/applying_conf" ]; then
+			sleep 1
+		else
+			break
+		fi
+	done
+	# reload
+    start
+}