Add monitoring to each parser in lib/gitlab/ci/parsers.rb#L10-13
Proposal
Because we are concerned with the performance of this PoC we should have additional monitoring and a feature flag in place in order to ensure the performance impact is known, monitored, and can be disabled.
As per !47097 (comment 446238654) we should add monitoring into each parser so that we can add Prometheus duration histograms for all parsers generically, with a label per parser. We should follow the documentation when adding in the metrics to the exporter.
Edited by Ricky Wiens