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Published: Mar 23, 2020 License: Apache-2.0 Imports: 16 Imported by: 0


Plugin RPC Generator

Generates go code from a Go interface definition for proxying between the plugin API and the subsystem being extended.


Given an interface definition:

type volumeDriver interface {
	Create(name string, opts opts) (err error)
	Remove(name string) (err error)
	Path(name string) (mountpoint string, err error)
	Mount(name string) (mountpoint string, err error)
	Unmount(name string) (err error)

Note: All function options and return values must be named in the definition.

Run the generator:

$ pluginrpc-gen --type volumeDriver --name VolumeDriver -i volumes/drivers/extpoint.go -o volumes/drivers/proxy.go


  • --type is the name of the interface to use
  • --name is the subsystem that the plugin "Implements"
  • -i is the input file containing the interface definition
  • -o is the output file where the generated code should go

Note: The generated code will use the same package name as the one defined in the input file

Optionally, you can skip functions on the interface that should not be implemented in the generated proxy code by passing in the function name to --skip. This flag can be specified multiple times.

You can also add build tags that should be prepended to the generated code by supplying --tag. This flag can be specified multiple times.

Known issues


You can also use this with go-generate, which is pretty awesome.
To do so, place the code at the top of the file which contains the interface definition (i.e., the input file):

//go:generate pluginrpc-gen -i $GOFILE -o proxy.go -type volumeDriver -name VolumeDriver

Then cd to the package dir and run go generate

Note: the pluginrpc-gen binary must be within your $PATH


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