Reusability

Macros

M42PL supports macros, which are reusable pipelines stored in a KVStore.

The list of available macros can be found be using the macros command:

| macros

A macro can be defined or updated by running the macro command followed by its pipeline definition. In the next example, we define the macro make_n which generates the requested number of events, or 1 by default:

| macro make_n [ | make count=`field(count, 1)` ]

You can invoke a macro with the same macro command, optionally followed by a list of macros parameters:

| macro make_n

| macro make_n count=2

Macros can be called as first command, or as an intermediate command in your pipeline.

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