cbool()¶

Purpose¶

cbool(expr)

Converts expr to a numeric boolean value. The result is 0 for false and 1 for true.

String input is trimmed before conversion. Empty strings, 0, false, off, and no convert to 0. Other non-empty strings convert to 1. String matching is case-insensitive.

This is useful when a value should later be rendered as a JSON boolean with a list template property that uses format="jsonf" and datatype="bool".

Example¶

set $!enabled = cbool("false");

template(name="out" type="list" option.jsonf="on") {
  property(outname="enabled" name="$!enabled" format="jsonf" datatype="bool")
}

produces

{"enabled":false}

Support: rsyslog Assistant | GitHub Discussions | GitHub Issues: rsyslog source project

Contributing: Source & docs: rsyslog source project