Add internal interface implementation for managers

internal/plugin/internal.go

@@ -0,0 +1,61 @@
+package plugin
+
+import (
+	"github.com/hashicorp/go-argmapper"
+	"github.com/hashicorp/go-hclog"
+	"github.com/hashicorp/go-plugin"
+	"github.com/hashicorp/vagrant-plugin-sdk/internal-shared/cacher"
+	"github.com/hashicorp/vagrant-plugin-sdk/internal-shared/cleanup"
+)
+
+// Returns value that implements Internal interface
+// used by mappers. This allows us to generate clients
+// for the managers in a common way.
+func NewInternal(
+	broker *plugin.GRPCBroker,
+	cache cacher.Cache,
+	cleanup cleanup.Cleanup,
+	logger hclog.Logger,
+	mappers []*argmapper.Func,
+) *internal {
+	return &internal{
+		broker:  broker,
+		cache:   cache,
+		cleanup: cleanup,
+		logger:  logger,
+		mappers: mappers,
+	}
+}
+
+type internal struct {
+	broker  *plugin.GRPCBroker
+	cache   cacher.Cache
+	cleanup cleanup.Cleanup
+	logger  hclog.Logger
+	mappers []*argmapper.Func
+}
+
+// Broker implements Internal
+func (i *internal) Broker() *plugin.GRPCBroker {
+	return i.broker
+}
+
+// Cache implements Internal
+func (i *internal) Cache() cacher.Cache {
+	return i.cache
+}
+
+// Cleanup implements Internal
+func (i *internal) Cleanup() cleanup.Cleanup {
+	return i.cleanup
+}
+
+// Logger implements Internal
+func (i *internal) Logger() hclog.Logger {
+	return i.logger
+}
+
+// Mappers implements Internal
+func (i *internal) Mappers() []*argmapper.Func {
+	return i.mappers
+}