Mustache filter --- Status : core plugin, unit tested and maintained. The Mustache filter is used to render a new field using a template and the provided data. Config using logstash format: ```` filter { mustache { template => '{{host}} received {{value}}' target_field => 'mustache_string' } } ````` Parameters: * ``template``: mustache template to apply. Default uses the full data object. * ``target_field``: field to store the result. Default : source field.