refactor(services): remove systemctl call duplication

selfprivacy_api/services/__init__.py

@@ -112,6 +112,13 @@ class ServiceManager(Service):
         """Return service description."""
         return "Enables communication between the SelfPrivacy app and the server."
 
+    @staticmethod
+    def get_units() -> List[str]:
+        """
+        List of all units associated with this service.
+        """
+        return []
+
     @staticmethod
     def get_svg_icon() -> str:
         """Read SVG icon from file and return it as base64 encoded string."""

selfprivacy_api/services/mailserver/__init__.py

@@ -27,6 +27,10 @@ class MailServer(Service):
     def get_description() -> str:
         return "E-Mail for company and family."
 
+    @staticmethod
+    def get_units() -> List[str]:
+        return ["dovecot2.service", "postfix.service"]
+
     @staticmethod
     def get_svg_icon() -> str:
         return base64.b64encode(MAILSERVER_ICON.encode("utf-8")).decode("utf-8")
@@ -75,19 +79,8 @@ class MailServer(Service):
         raise NotImplementedError("disable is not implemented for MailServer")
 
     @staticmethod
-    def stop():
-        subprocess.run(["systemctl", "stop", "dovecot2.service"], check=False)
-        subprocess.run(["systemctl", "stop", "postfix.service"], check=False)
-
-    @staticmethod
-    def start():
-        subprocess.run(["systemctl", "start", "dovecot2.service"], check=False)
-        subprocess.run(["systemctl", "start", "postfix.service"], check=False)
-
-    @staticmethod
-    def restart():
-        subprocess.run(["systemctl", "restart", "dovecot2.service"], check=False)
-        subprocess.run(["systemctl", "restart", "postfix.service"], check=False)
+    def get_logs():
+        return ""
 
     @staticmethod
     def get_folders() -> List[str]:

selfprivacy_api/services/prometheus/__init__.py

@@ -30,6 +30,10 @@ class Prometheus(Service):
     def get_svg_icon() -> str:
         return base64.b64encode(PROMETHEUS_ICON.encode("utf-8")).decode("utf-8")
 
+    @staticmethod
+    def get_units() -> List[str]:
+        return ["prometheus.service"]
+
     @staticmethod
     def get_url() -> Optional[str]:
         """Return service url."""
@@ -64,16 +68,8 @@ class Prometheus(Service):
         return get_service_status("prometheus.service")
 
     @staticmethod
-    def stop():
-        subprocess.run(["systemctl", "stop", "prometheus.service"])
-
-    @staticmethod
-    def start():
-        subprocess.run(["systemctl", "start", "prometheus.service"])
-
-    @staticmethod
-    def restart():
-        subprocess.run(["systemctl", "restart", "prometheus.service"])
+    def get_logs():
+        return ""
 
     @staticmethod
     def get_owned_folders() -> List[OwnedPath]:

selfprivacy_api/services/service.py

@@ -4,6 +4,8 @@ from abc import ABC, abstractmethod
 import logging
 from typing import List, Optional
 from os.path import exists
+from subprocess import run
+from selfprivacy_api.utils.root_interface import call_root_function
 
 from selfprivacy_api import utils
 from selfprivacy_api.services.config_item import ServiceConfigItem
@@ -110,6 +112,13 @@ class Service(ABC):
         """
         return cls.get_id()
 
+    @staticmethod
+    @abstractmethod
+    def get_units() -> List[str]:
+        """
+        List of all units associated with this service.
+        """
+
     @classmethod
     def get_group(cls) -> Optional[str]:
         """
@@ -228,23 +237,27 @@ class Service(ABC):
         """Disable the service. Usually this means disabling systemd unit."""
         cls._set_enable(False)
 
-    @staticmethod
-    @abstractmethod
-    def stop():
+    @classmethod
+    def stop(cls):
         """Stop the service. Usually this means stopping systemd unit."""
-        pass
+        for unit in cls.get_units():
+            run(["systemctl", "stop", unit], check=False)
+            # TODO: use root separation daemon:
+            # call_root_function(["systemctl", "stop", unit])
 
     @staticmethod
-    @abstractmethod
-    def start():
+    def start(cls):
         """Start the service. Usually this means starting systemd unit."""
-        pass
+        for unit in cls.get_units():
+            run(["systemctl", "start", unit], check=False)
+            # call_root_function(["systemctl", "start", unit])
 
     @staticmethod
-    @abstractmethod
-    def restart():
+    def restart(cls):
         """Restart the service. Usually this means restarting systemd unit."""
-        pass
+        for unit in cls.get_units():
+            run(["systemctl", "restart", unit], check=False)
+            # call_root_function(["systemctl", "restart", unit])
 
     @classmethod
     def get_configuration(cls):

selfprivacy_api/services/test_service/__init__.py

@@ -59,6 +59,13 @@ class DummyService(Service):
         """Return service description."""
         return "A small service used for test purposes. Does nothing."
 
+    @staticmethod
+    def get_units() -> List[str]:
+        """
+        List of all units associated with this service.
+        """
+        return []
+
     @staticmethod
     def get_svg_icon() -> str:
         """Read SVG icon from file and return it as base64 encoded string."""