Initial commit

This is a FastAPI backend microservice template used with `copier` utility.

Features of applied template are:
- Configuration file processing logic
- Metrics and tracing (both optional) configuration available
- Debug endpoints
- Database migration commands, prepared Alembic environment
- Database usage example in ping_db endpoint
- gitea sanity check pipeline

{{project_slug}}/logic/__init__.py

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+"""Handlers logic functions are located here."""

{{project_slug}}/logic/system.py.jinja

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+"""/system handlers logic is defined here."""
+
+from sqlalchemy import select, text
+
+from {{project_slug}}.db.connection.manager import PostgresConnectionManager
+from {{project_slug}}.schemas.health_check import PingResponse
+
+
+async def ping_db(connection_manager: PostgresConnectionManager, readonly: bool) -> PingResponse:
+    conn_future = connection_manager.get_connection() if not readonly else connection_manager.get_ro_connection()
+
+    query = select(text("1"))
+    async with conn_future as conn:
+        res = (await conn.execute(query)).scalar_one()
+        if res == 1:
+            return PingResponse()