__init__

uvm/app.py

@@ -0,0 +1,42 @@
+"""Application composition root for the uvm command-line executable."""
+
+from __future__ import annotations
+
+from collections.abc import Callable
+from dataclasses import dataclass
+
+from .config import Settings
+from .firecracker.process import FirecrackerProcessManager
+from .images import ImageStore
+from .install import Installer
+from .lifecycle import LifecycleService
+from .network import NetworkManager
+from .state import StateStore
+from .system import CommandRunner
+
+
+@dataclass(slots=True)
+class Application:
+    """Concrete host services used by the CLI; this is not a public SDK."""
+
+    settings: Settings
+    state_store: StateStore
+    installer: Installer
+    lifecycle: LifecycleService
+
+
+def build_application(emit: Callable[[str], None] | None = print) -> Application:
+    settings = Settings.from_environment()
+    runner = CommandRunner(emit=emit)
+    state_store = StateStore(settings)
+    images = ImageStore(settings, runner)
+    network = NetworkManager(settings, runner)
+    process = FirecrackerProcessManager(settings)
+    lifecycle = LifecycleService(settings, state_store, images, network, process)
+    installer = Installer(settings, runner, state_store, emit=emit)
+    return Application(
+        settings=settings,
+        state_store=state_store,
+        installer=installer,
+        lifecycle=lifecycle,
+    )