inject helper injects values to events according to the configuration.

For details about configuration, see Inject section.

Here is the code example with inject helper:

require 'fluent/plugin/filter'
​
module Fluent::Plugin
  class ExampleFilter < Filter
    Fluent::Plugin.register_filter('example', self)
​
    # 1. load inject helper
    helpers :inject
​
    # omit configure, shutdown and other plugin API
​
    def filter(tag, time, record)
      # 2. inject values to record
      new_record = inject_values_to_record(tag, time, record)
      # edit new_record ...
      new_record
    end
  end
end

For more details about configuration, see Inject section.

Methods

inject_values_to_recort(tag, time, record)

This method injects values to given record and returns new record

• tag: the tag of the event

• time: event timestamp

• record: event record

Code example:

def filter(tag, time, record)
  new_record = inject_values_to_record(tag, time, record)
  # edit new_record ...
  new_record
end

inject_values_to_event_stream(tag, es)

This method injects values to given event stream and returns new event stream

• tag: the tag of the event

• es: event stream

Code example:

def process(tag, es)
  new_es = inject_values_to_event_stream(tag, es)
  # do something using new_es
end

inject used plugins

• ​Stdout filter​

• ​Exec output​

• ​Exec filter output​

• ​File output​

• ​Stdout output​

If this article is incorrect or outdated, or omits critical information, please let us know. Fluentd is a open source project under Cloud Native Computing Foundation (CNCF). All components are available under the Apache 2 License.