Add an endpoint for health checks

Author: sampsapenna

swift_upload_runner/api.py

@@ -195,3 +195,15 @@ async def handle_get_container(
     await download.a_write_to_response(resp)
 
     return resp
+
+
+async def handle_health_check(
+        request: aiohttp.web.Request
+) -> aiohttp.web.Response:
+    """Answer a service health check."""
+    # Case degraded
+
+    # Case nominal
+    return aiohttp.web.json_response({
+        "status": "Ok",
+    })

swift_upload_runner/server.py

@@ -16,6 +16,7 @@
 from .auth import handle_login, read_in_keys, handle_validate_authentication
 from .api import handle_get_object, handle_get_container
 from .api import handle_post_object_chunk, handle_post_object_options
+from .api import handle_health_check
 
 
 asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
@@ -48,6 +49,10 @@ async def servinit() -> aiohttp.web.Application:
         aiohttp.web.post("/{project}", handle_login)
     ])
 
+    app.add_routes([
+        aiohttp.web.get("/health", handle_health_check)
+    ])
+
     # Add api routes
     app.add_routes([
         aiohttp.web.get("/{project}/{container}/{object_name:.*}",