(scope, receive, send)
| 9 | """Create a ASGI app which serves the metrics from a registry.""" |
| 10 | |
| 11 | async def prometheus_app(scope, receive, send): |
| 12 | assert scope.get("type") == "http" |
| 13 | # Prepare parameters |
| 14 | params = parse_qs(scope.get('query_string', b'').decode("utf8")) |
| 15 | accept_header = ",".join([ |
| 16 | value.decode("utf8") for (name, value) in scope.get('headers') |
| 17 | if name.decode("utf8").lower() == 'accept' |
| 18 | ]) |
| 19 | accept_encoding_header = ",".join([ |
| 20 | value.decode("utf8") for (name, value) in scope.get('headers') |
| 21 | if name.decode("utf8").lower() == 'accept-encoding' |
| 22 | ]) |
| 23 | # Bake output |
| 24 | status, headers, output = _bake_output(registry, accept_header, accept_encoding_header, params, disable_compression) |
| 25 | formatted_headers = [] |
| 26 | for header in headers: |
| 27 | formatted_headers.append(tuple(x.encode('utf8') for x in header)) |
| 28 | # Return output |
| 29 | payload = await receive() |
| 30 | if payload.get("type") == "http.request": |
| 31 | await send( |
| 32 | { |
| 33 | "type": "http.response.start", |
| 34 | "status": int(status.split(' ')[0]), |
| 35 | "headers": formatted_headers, |
| 36 | } |
| 37 | ) |
| 38 | await send({"type": "http.response.body", "body": output}) |
| 39 | |
| 40 | return prometheus_app |
nothing calls this directly
no test coverage detected