Get plugins from basis

internal/core/basis.go

@@ -162,6 +162,37 @@ func (b *Basis) DataDir() (*datadir.Basis, error) {
 	return b.dir, nil
 }
 
+var StringComponentTypeMap = map[string]component.Type{
+	"command":       component.CommandType,
+	"communicator":  component.CommunicatorType,
+	"guest":         component.GuestType,
+	"host":          component.HostType,
+	"provider":      component.ProviderType,
+	"provisioner":   component.ProvisionerType,
+	"synced_folder": component.SyncedFolderType,
+}
+
+// Implements core.Basis
+// Returns all the registered plugins of the types specified
+func (b *Basis) Plugins(types ...string) (plugins []*core.NamedPlugin, err error) {
+	plugins = []*core.NamedPlugin{}
+	for _, pluginType := range types {
+		typ := StringComponentTypeMap[pluginType]
+		components, err := b.typeComponents(b.ctx, typ)
+		if err != nil {
+			return nil, err
+		}
+		for name, h := range components {
+			plugins = append(plugins, &core.NamedPlugin{
+				Plugin: h.Value,
+				Name:   name,
+				Type:   pluginType,
+			})
+		}
+	}
+	return
+}
+
 // Generic function for providing ref to a scope
 func (b *Basis) Ref() interface{} {
 	return &vagrant_plugin_sdk.Ref_Basis{