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A small Python module to parse RFC5424-formatted Syslog messages
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This module implements an RFC 5424 IETF Syslog Protocol parser in Python, using the lark parser-generator. It should work on Python 2.7 or Python 3.3+.

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The file contains a fully-functional Syslog server which will receive messages on a UNIX domain socket and print them to stdout as JSON blobs.

A word on performance

On a fairly modern system (Xeon E3-1270v3), it takes about 230µs to parse a single syslog message and construct a SyslogMessage object (which is to say, you should be able to parse about 4300 per second with a single-threaded process). Are you really in that much of a rush, anyway?

If you're interested in a faster, non-Python alternative, you may also enjoy rust-syslog-rfc5424.

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