Other Structures

Settings specific to the gossip payloads used in the SWIM gossip dissemination subsystem.

Lifeguard is a set of extensions to SWIM that helps reducing false positive failure detections.

Pretty log formatter which prints log lines in the following multi line format, listing every metadata element in it’s own, //-prefixed, line as well as pretty printing connections if set as Logger.MetadataValue.

Example output:

 SWIMNIOSample: [2020-08-25 0:7:59.8420] [info] [Example.swift:66] Membership status changed: [udp://127.0.0.1:7001#7015602685756068157] is now [alive(incarnation: 0)]
/ metadata:
/ "swim/member": udp://127.0.0.1:7001#7015602685756068157
/ "swim/member/previousStatus": unknown
/ "swim/member/status": alive(incarnation: 0)

Pro tip: you may want to use a coloring terminal application, which colors lines prefixed with // with a slightly different color, which makes visually parsing metadata vs. log message lines even more visually pleasing.