Decoders

Decoders, or parsers, extract individual properties out of a raw log record, given a well-defined format.

Flowgger intentionally rejects malformed entries in order to prevent undefined behaviors in downstream applications. In particular, it systematically checks that strings supposed to use UTF-8 encoding do not contain any invalid UTF-8 sequences. Records must also contain a host name and a valid timestamp.

It can also perform type checking on typed values, and transform values into specific types in order to enforce a schema.

Supported decoders are:

• JSON (GELF)
• LTSV
• RFC5424