add systemd guard

casm/cmds/podman/systemd.py

@@ -12,7 +12,7 @@
 from ..service import add_pos_services
 
 
-@add_command("enable", help="Enable systemd for containers")
+@add_command("enable", help="Enable systemd unit for containers")
 def add_cmd_enable(_arg: argp):
     _arg.add_argument("--restart-policy", dest="restart_policy",
                       type=str, nargs=1, metavar="STR", default=["on-failure"],
@@ -37,7 +37,7 @@ def run_cmd_enable(cmds: commands) -> int:
     return 0
 
 
-@add_command("disable", help="Disable systemd for containers")
+@add_command("disable", help="Disable systemd unit for containers")
 def add_cmd_disable(_arg: argp):
     add_pos_services(_arg)
 
@@ -57,11 +57,28 @@ def run_cmd_disable(cmds: commands) -> int:
     return 0
 
 
+@add_command("guard", help="Guard systemd unit for containers")
+def add_cmd_guard(_arg: argp):
+    add_pos_services(_arg)
+
+
+@run_command(add_cmd_guard)
+def run_cmd_guard(cmds: commands) -> int:
+    assemble: assemble_file = cmds.args.assemble_file
+    assert isinstance(assemble, assemble_file)
+    services: List[str] = cmds.args.services
+    for service in assemble.template.services:
+        cmds.logger.debug(f"{service.title}: {service.container_name}")
+        if len(services) > 0 and service.title not in services:
+            continue
+    return 0
+
+
 @add_command("systemd", help="Manage systemd units")
 def add_cmd_systemd(_arg: argp):
     pass
 
 
-@run_command(add_cmd_systemd, add_cmd_enable, add_cmd_disable)
+@run_command(add_cmd_systemd, add_cmd_enable, add_cmd_disable, add_cmd_guard)
 def run_cmd_systemd(cmds: commands) -> int:
     return 0