attempt to create jarklin service manager

src/jarklin/_commands/system/__init__.py

@@ -0,0 +1,13 @@
+# -*- coding=utf-8 -*-
+r"""
+
+"""
+
+
+def run():
+    from ...system import SystemJarklin
+    from .._logging import configure_logging
+
+    system = SystemJarklin()
+    configure_logging(config=system.config)
+    system.run()

src/jarklin/system/__init__.py

@@ -0,0 +1,79 @@
+# -*- coding=utf-8 -*-
+r"""
+
+"""
+import logging
+import os.path
+import sys
+import time
+import typing as t
+from functools import cached_property
+import subprocess
+import configlib.finder
+
+
+class SystemJarklin:
+    def __init__(self):
+        self.processes: t.List[subprocess.Popen] = []
+
+    @cached_property
+    def config(self) -> 'configlib.ConfigInterface':
+        return configlib.find_and_load(
+            "jarklin.yml", "jarklin.yaml",
+            "jarklin/config.yml", "jarklin/config.yaml",
+            places=[configlib.finder.places.etc()]
+        )
+
+    def run(self):
+        name: str = ""
+        try:
+            self.init()
+        except Exception as error:
+            logging.critical(f"Failed to initialize jarklin {name!r}", exc_info=error)
+            self.end()
+            sys.exit(1)
+        try:
+            while True:
+                time.sleep(1)
+        except KeyboardInterrupt:
+            self.end()
+
+    def init(self):
+        for config in self.config.get("jarklins"):
+            config: 'ServiceConfig'
+            name = config['name']
+            files = config['files']
+            if not os.path.isdir(files):
+                raise NotADirectoryError(files)
+            logging.info(f"Setting up jarklin {name!r} in {files!r}")
+            if config.get('web', default=False):
+                self.processes.append(
+                    subprocess.Popen(
+                        [sys.executable, 'web', 'run'],
+                        cwd=files,
+                        env=config.get('env'),
+                    )
+                )
+            if config.get('cache', default=False):
+                self.processes.append(
+                    subprocess.Popen(
+                        [sys.executable, 'cache', 'run'],
+                        cwd=files,
+                        env=config.get('env'),
+                    )
+                )
+
+    def end(self):
+        for process in self.processes:
+            process.terminate()
+        for process in self.processes:
+            process.wait()
+
+
+class ServiceConfig(t.TypedDict):
+    name: str
+    description: t.Optional[str]
+    files: str
+    env: t.Optional[t.Dict[str, str]]
+    web: t.Optional[bool]
+    cache: t.Optional[bool]