The in_sample input plugin generates sample events. It is useful for testing, debugging, benchmarking and getting started with Fluentd.

It is included in Fluentd's core.

This plugin is the renamed version of in_dummy.

Example Configuration

<source>
  @type sample
  sample {"hello":"world"}
</source>
​
# If you use fluentd v1.11.1 or earlier, use following configuration
<source>
  @type dummy
  dummy {"hello":"world"}
</source>

Please see the Config File article for the basic structure and syntax of the configuration file.

Plugin Helpers

• ​thread​

• ​storage​

• See also: Input Plugin Overview​

Parameters

See Common Parameters.

@type

The value must be sample.

If you use fluentd v1.11.1 or earlier, use dummy.

tag

The value is the tag assigned to the generated events.

size

The number of events in the event stream of each emit.

rate

It configures how many events to generate per second.

auto_increment_key

If specified, each generated event has an auto-incremented key field.

For example, with auto_increment_key foo_key, the first couple of events look like:

2014-12-14 23:23:38 +0000 test: {"message":"sample","foo_key":0}
2014-12-14 23:23:38 +0000 test: {"message":"sample","foo_key":1}
2014-12-14 23:23:38 +0000 test: {"message":"sample","foo_key":2}

suspend

This parameter is removed since v1.10.0. This feature is automatically handled in the core.

sample

The sample data to be generated. It should be either an array of JSON hashes or a single JSON hash. If it is an array of JSON hashes, the hashes in the array are cycled through in order.

If you use fluentd v1.11.1 or earlier, use dummy.

If this article is incorrect or outdated, or omits critical information, please let us know.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