Version 0.4.0

Changes:
- put ObservabilityMiddleware before ExceptionHandlerMiddleware to avoid repetative code
- add application startup and last metrics update metrics along with CPU usage metric and threads count
- move host and port to new uvicorn section at config along with new reload and forwarded_allow_ips
- add request_id and remove trace_id/span_id generation if tracing is disabled
- move logging logic from utils to observability
- pass trace_id/span_id in HEX form

{{project_slug}}/dependencies/metrics_dep.py.jinja

@@ -5,22 +5,25 @@ from fastapi import FastAPI, Request
 from {{project_slug}}.observability.metrics import Metrics
 
 
-def init_dispencer(app: FastAPI, connection_manager: Metrics) -> None:
+def init_dispencer(app: FastAPI, metrics: Metrics) -> None:
     """Initialize Metrics dispencer at app's state."""
     if hasattr(app.state, "metrics_dep"):
         if not isinstance(app.state.metrics_dep, Metrics):
             raise ValueError(
-                "metrics_dep attribute of app's state is already set" f"with other value ({app.state.metrics_dep})"
+                f"metrics_dep attribute of app's state is already set with other value ({app.state.metrics_dep})"
             )
         return
 
-    app.state.metrics_dep = connection_manager
+    app.state.metrics_dep = metrics
 
 
-def obtain(app_or_request: FastAPI | Request) -> Metrics:
-    """Get a Metrics from request's app state."""
-    if isinstance(app_or_request, Request):
-        app_or_request = app_or_request.app
-    if not hasattr(app_or_request.state, "metrics_dep"):
+def from_app(app: FastAPI) -> Metrics:
+    """Get a Metrics from app state."""
+    if not hasattr(app.state, "metrics_dep"):
         raise ValueError("Metrics dispencer was not initialized at app preparation")
-    return app_or_request.state.metrics_dep
+    return app.state.metrics_dep
+
+
+async def from_request(request: Request) -> Metrics:
+    """Get a Metrics from request's app state."""
+    return from_app(request.app)