External plugin support

[JordanSussman]

Is your feature request related to a problem? Please describe.

I would like the ability to provide custom Boundary plugins outside of the ones automatically built into Boundary. This would help enable use-cases like https://github.com/hashicorp/boundary/issues/2405 where users want to extend the capabilities of Boundary without relying on Boundary to build the functionality themselves.

Describe the solution you'd like

Ability to place custom plugins within the execution_dir defined within https://www.boundaryproject.io/docs/configuration/plugins for Boundary to utilize.

Describe alternatives you've considered

• Utilize an external process to write data into the Boundary API to accomplish the same workflow as the plugin
• Modify an existing plugin to support the functionality I want

Additional context

@PPacent suggested I create this issue to differentiate between https://github.com/hashicorp/boundary/issues/2405

[xingluw]

Hi @JordanSussman, this is an important feature on Boundary's roadmap and I will leave this ticket open to gauge community interest through upvotes.