README
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plugin-example
Just a sample app for using plugins in Go. To run the service with plugins, simply just run. The justfile also provides helpers for regenerating Go and Python protobuf code if the proto files are edited.
About the service
This service uses the github.com/hashicorp/go-plugin package in order to provide some simple arithmetic operations, currently against a fixed set of integers (set in cmd/main.go). This package requires the user to create an interface that defines the API of the plugins, then uses gRPC to invoke the plugin functionality when called.
The interface for this demo is defined in the sdk package:
type Mather interface {
DoMath(x, y int64) int64
}
To create plugin in Go, simply implement the interface within a separate executable (see /plugins/adder and /plugins/multiplier for examples). This gRPC based approach also allows plugins to be created in any programming language which supports gRPC. In this project, the /plugins/subtractor plugin has been implemented in Python.
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