From 482e0be438888b8afd1e60dfdb341103fc54bfc1 Mon Sep 17 00:00:00 2001
From: aitbc <aitbc@keisanki.net>
Date: Mon, 20 Apr 2026 11:11:12 +0200
Subject: [PATCH] refactor: implement lazy loading for coordinator-api service
 imports

Replaced eager imports with lazy loading using __getattr__ to defer service module imports until first access. Added module mapping dictionary and dynamic import logic to reduce initial import overhead while maintaining the same public API.
---
 .../src/app/services/__init__.py              | 23 +++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/apps/coordinator-api/src/app/services/__init__.py b/apps/coordinator-api/src/app/services/__init__.py
index 01d2e419..7b0e0394 100755
--- a/apps/coordinator-api/src/app/services/__init__.py
+++ b/apps/coordinator-api/src/app/services/__init__.py
@@ -1,8 +1,23 @@
 """Service layer for coordinator business logic."""
 
-from .explorer import ExplorerService
-from .jobs import JobService
-from .marketplace import MarketplaceService
-from .miners import MinerService
+from importlib import import_module
 
 __all__ = ["JobService", "MinerService", "MarketplaceService", "ExplorerService"]
+
+_MODULE_BY_EXPORT = {
+    "ExplorerService": ".explorer",
+    "JobService": ".jobs",
+    "MarketplaceService": ".marketplace",
+    "MinerService": ".miners",
+}
+
+
+def __getattr__(name: str):
+    module_name = _MODULE_BY_EXPORT.get(name)
+    if module_name is None:
+        raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
+
+    module = import_module(module_name, __name__)
+    value = getattr(module, name)
+    globals()[name] = value
+    return value