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common.go
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/
common.go
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package common
import (
"net/rpc"
"github.com/hashicorp/go-plugin"
)
// Greeter is an interface for plugin.
type Greeter interface {
Greet() (string, error)
}
// GreeterRPC is a RPC client for plugin.
type GreeterRPC struct{ client *rpc.Client }
func (g *GreeterRPC) Greet() (string, error) {
var resp string
if err := g.client.Call("Plugin.Greet", new(interface{}), &resp); err != nil {
return "", err
}
return resp, nil
}
type GreeterRPCServer struct {
Impl Greeter
}
func (s *GreeterRPCServer) Greet(args interface{}, resp *string) error {
var err error
*resp, err = s.Impl.Greet()
return err
}
// HandshakeConfig is a configuration for handshake.
var HandshakeConfig = plugin.HandshakeConfig{
MagicCookieKey: "BASIC_PLUGIN",
MagicCookieValue: "hello",
}
// GreeterPlugin implements plugin.Plugin interface.
type GreeterPlugin struct {
Impl Greeter
}
func (GreeterPlugin) Client(b *plugin.MuxBroker, c *rpc.Client) (interface{}, error) {
return &GreeterRPC{client: c}, nil
}
func (p *GreeterPlugin) Server(*plugin.MuxBroker) (interface{}, error) {
return &GreeterRPCServer{Impl: p.Impl}, nil
}