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plugin.go
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plugin.go
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package pluginhost
import (
"fmt"
"log"
"net/rpc"
"net/rpc/jsonrpc"
"os"
"github.com/natefinch/pie"
"github.com/spf13/viper"
)
// Host is an object consumers can retrieve doit information from.
type Host struct {
client *rpc.Client
}
// NewHost builds an instance of Host.
func NewHost(pluginPath string) (*Host, error) {
client, err := pie.StartProviderCodec(jsonrpc.NewClientCodec, os.Stderr, pluginPath)
if err != nil {
return nil, err
}
return &Host{
client: client,
}, nil
}
// Call a method on the plugin.
func (h *Host) Call(method string, args ...string) (string, error) {
opts := &CallOptions{
AccessToken: viper.GetString("access-token"),
Args: args,
}
var result string
err := h.client.Call(method, opts, &result)
if err != nil {
debug(err.Error())
return "", fmt.Errorf("unable to run plugin action %s", method)
}
return result, nil
}
func debug(msg string) {
//if viper.GetBool("verbose") {
log.Println(msg)
//}
}
// CallOptions are options to a plugin call. This is exported so go based plugins
// can use the type.
type CallOptions struct {
AccessToken string
Args []string
}