[Q&A] Problem in using default value for the parameter

[Sumit-Negi-github]

What is a problem?

Objective: To use default value of param if param is not provided in config.
I am writing it like this -

config_param :dummy_param, :string, default: 'dummy_value'
def configure(conf)
    super
    @log.info("conf['dummy_param']=#{conf['dummy_param']}")

If i dont provide the param in the config, this is not printing dummy_value in the logs. It seems it is not getting picked up.

This code is in custom output plugin where i have inherited Fluent::Plugin::Output

Any help on where i am going wrong?

TIA.

Describe the configuration of Fluentd

Not needed.

Describe the logs of Fluentd

No response

Environment

- Fluentd version: fluentd 1.16.5
- TD Agent version:
- Fluent Package version:
- Docker image (tag):
- Operating system: OL8
- Kernel version:

[daipom]

@Sumit-Negi-github
We can use the parameters by @... after super in configure.

log.info("conf['dummy_param']=#{@dummy_param}")

example: https://docs.fluentd.org/plugin-development/api-config-types#data-types

[Sumit-Negi-github]

By using @dummy_param, that is printing the correct value in the logs. But is this actually getting considered for default value by fluentd internally.
I want to make use of the @id parameter provided by fluentd. If i dont have @id parameter in config, i want to make sure the default value for it gets considered. So logs should be printed in the log file with corresponding @id value of that config section. But they are not printing with @id.