This PR brings support for pluggable logging implementations via the logger plugin interface, which is based on Go's standard log/slog.Handler interface. This allows any slog.Handler implementation to be used as a logger plugin. Loggers can be referenced via the server.logger_plugin configuration option; and can also be used for decision logs. OPA includes a built-in file logger plugin (file_logger) that writes structured JSON logs with rotation support using lumberjack. Users can also implement and register custom logger plugins when building OPA.
Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
Following up on #7566, and now applying the more exciting
modernizations. fmt.Appendf was new to me! But especially
the contains checks are so much better IMHO. I have reviewed
all changes myself and did a few manual changes where it
became obvious that things could be improved a little further.
(the modernize analyzer still has some issues running against
OPA, and I have manually worked around those for the time being)
Signed-off-by: Anders Eknert <anders@styra.com>
Stephan Renatus