Hello, there's Microsoft LogParser. good thing about it, it likes self-consistent CSV logs (or TSV), when first line is fields.
it helps to change log format on the fly (for example, in IIS), so IIS starts new log once format is changed. you can query such logs without prior knowledge of fields, because fields are in log. I did not find such possibility in haproxy. is it supported ? or must yet to be done. Cheers, Ilya Shipitcin