machine: add "/machine/services/restart" endpoint

This makes it possible for clients to hard restart an service in the event it becomes unresponsive.

Signed-off-by: Eric Callahan <arksine.code@gmail.com>

moonraker/plugins/machine.py

@@ -4,6 +4,7 @@
 #
 # This file may be distributed under the terms of the GNU GPLv3 license.
 import logging
+from tornado.ioloop import IOLoop
 
 class Machine:
     def __init__(self, config):
@@ -12,6 +13,9 @@ class Machine:
             "/machine/reboot", ['POST'], self._handle_machine_request)
         self.server.register_endpoint(
             "/machine/shutdown", ['POST'], self._handle_machine_request)
+        self.server.register_endpoint(
+            "/machine/services/restart", ['POST'],
+            self._handle_service_restart)
 
         # Register remote methods
         self.server.register_remote_method(
@@ -35,6 +39,18 @@ class Machine:
     async def reboot_machine(self):
         await self._execute_cmd("sudo shutdown -r now")
 
+    async def _handle_service_restart(self, web_request):
+        name = web_request.get('service')
+        if name == "klipper":
+            await self._execute_cmd(f'sudo systemctl restart {name}')
+        elif name == "moonraker":
+            IOLoop.current().spawn_callback(
+                self._execute_cmd, f'sudo systemctl restart {name}')
+        else:
+            raise self.sever.error(
+                f"Invalid argument recevied for 'name': {name}")
+        return "ok"
+
     async def _execute_cmd(self, cmd):
         shell_command = self.server.lookup_plugin('shell_command')
         scmd = shell_command.build_shell_command(cmd, None)
@@ -42,6 +58,7 @@ class Machine:
             await scmd.run(timeout=2., verbose=False)
         except Exception:
             logging.exception(f"Error running cmd '{cmd}'")
+            raise
 
 def load_plugin(config):
     return Machine(config)