[connector/signaltometrics] Handle OTTL error mode

[lahsivjar]

OTTL provides error modes which could configure how OTTL error modes are handled by the component. We should take the error mode as a configuration in the component and use it for changing the behavior.

[lahsivjar]

@axw Confirming if I am on the same page, we would be taking an error mode as a configuration and handling it in our code in the signaltometrics to:

1. Log any errors if error mode is ignore
2. Silently discard errors if error mode is silent
3. Propagate errors and stop next processing on OTTL errors if error mod is propagate

Also, what would the scope be for handling the error codes? Do we limit it to evaluating the OTTL expressions or extend it to parsing too?

I am also undecided on whether to use the OTTL error mode (as it applies to condition and statement sequence parsing only) or just have a custom configuration for our component.

[axw]

Confirming if I am on the same page, we would be taking an error mode as a configuration and handling it in our code in the signaltometrics to:

1. Log any errors if error mode is ignore
2. Silently discard errors if error mode is silent
3. Propagate errors and stop next processing on OTTL errors if error mod is propagate

Sounds right.

Also, what would the scope be for handling the error codes? Do we limit it to evaluating the OTTL expressions or extend it to parsing too?

I think config parsing should always be a fast-fail. The error mode would only affect runtime behaviour.