Available in syslog-ng OSE 3.3 and later.

The syslog-ng OSE application allows you to select and construct name-value pairs from any information already available about the log message, or extracted from the message itself. You can directly use this structured information, for example, in the following places:

• amqp() destination

• format-welf() template function

• mongodb() destination

• stomp() destination

• or in other destinations using the format-json() template function.

When using value-pairs, there are three ways to specify which information (that is, macros or other name-value pairs) to include in the selection.

• Select groups of macros using the scope() parameter, and optionally remove certain macros from the group using the exclude() parameter.

• List specific macros to include using the key() parameter.

• Define new name-value pairs to include using the pair() parameter.

These parameters are detailed in value-pairs().