chore: add timestamp to uvicorn logs (#46)

This commit adds a uvicorn configuration file and uses this file during
uvicorn startup to add timestamps to the uvicorn logs. The configuration
is equal to the default configuration stored in `uvicorn.config.LOGGING_CONFIG`
but with a timestamp prepended.

runner/Dockerfile

@@ -52,4 +52,4 @@ COPY app/ /app/app
 COPY images/ /app/images
 COPY bench.py /app/bench.py
 
-CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]
+CMD ["uvicorn", "app.main:app", "--log-config", "app/cfg/uvicorn_logging_config.json", "--host", "0.0.0.0", "--port", "8000"]

runner/app/cfg/uvicorn_logging_config.json

@@ -0,0 +1,46 @@
+{
+ "version": 1,
+ "disable_existing_loggers": false,
+ "formatters": {
+ "default": {
+ "()": "uvicorn.logging.DefaultFormatter",
+ "fmt": "%(asctime)s %(levelprefix)s %(message)s",
+ "use_colors": null
+ },
+ "access": {
+ "()": "uvicorn.logging.AccessFormatter",
+ "fmt": "%(asctime)s %(levelprefix)s %(client_addr)s - \"%(request_line)s\" %(status_code)s"
+ }
+ },
+ "handlers": {
+ "default": {
+ "formatter": "default",
+ "class": "logging.StreamHandler",
+ "stream": "ext://sys.stderr"
+ },
+ "access": {
+ "formatter": "access",
+ "class": "logging.StreamHandler",
+ "stream": "ext://sys.stdout"
+ }
+ },
+ "loggers": {
+ "uvicorn": {
+ "handlers": [
+ "default"
+ ],
+ "level": "INFO",
+ "propagate": false
+ },
+ "uvicorn.error": {
+ "level": "INFO"
+ },
+ "uvicorn.access": {
+ "handlers": [
+ "access"
+ ],
+ "level": "INFO",
+ "propagate": false
+ }
+ }
+}