Placeholder Plugin Providers for Repos and added testPlugin struct (#1532)

* Create minimalistic plugin map and test plugin.

* Pass secrets and attributes to the plugin when creating catalogs or sets.  Add tests for CreateSet and CreateCatalog repo methods.

* make fmt and extract out getPrivateCatalog and getCatalog helper methods.

* Exporting TestPluginServer so it can be used in the handlers.

* Keep separate persisted data from host catalogs lookups which facilitate passing it onto the plugins.

* Add TODO to merge get Catalog and get Persisted data.

* Adding tests for unimplemented being returned by the plugin.

* Use GetFields() instead of AsMap() to confirm attributes should be populated. Make clone consistent between catalog and sets.

Co-authored-by: Jeff Mitchell <jeffrey.mitchell@gmail.com>

internal/host/plugin/host_set_test.go

@@ -10,6 +10,8 @@ import (
 	"github.com/hashicorp/boundary/internal/plugin/host"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/types/known/structpb"
 )
 
 func TestHostSet_Create(t *testing.T) {
@@ -37,7 +39,7 @@ func TestHostSet_Create(t *testing.T) {
 				catalogId: "",
 			},
 			want: &HostSet{HostSet: &store.HostSet{
-				Attributes: []byte("{}"),
+				Attributes: []byte{},
 			}},
 			wantErr: true,
 		},
@@ -49,7 +51,7 @@ func TestHostSet_Create(t *testing.T) {
 			want: &HostSet{
 				HostSet: &store.HostSet{
 					CatalogId:  cat.GetPublicId(),
-					Attributes: []byte("{}"),
+					Attributes: []byte{},
 				},
 			},
 		},
@@ -65,7 +67,7 @@ func TestHostSet_Create(t *testing.T) {
 				HostSet: &store.HostSet{
 					CatalogId:  cat.GetPublicId(),
 					Name:       "test-name",
-					Attributes: []byte("{}"),
+					Attributes: []byte{},
 				},
 			},
 		},
@@ -81,7 +83,7 @@ func TestHostSet_Create(t *testing.T) {
 				HostSet: &store.HostSet{
 					CatalogId:  cat.GetPublicId(),
 					Name:       "test-name",
-					Attributes: []byte("{}"),
+					Attributes: []byte{},
 				},
 			},
 			wantErr: true,
@@ -98,7 +100,7 @@ func TestHostSet_Create(t *testing.T) {
 				HostSet: &store.HostSet{
 					CatalogId:  cat2.GetPublicId(),
 					Name:       "test-name",
-					Attributes: []byte("{}"),
+					Attributes: []byte{},
 				},
 			},
 		},
@@ -114,7 +116,7 @@ func TestHostSet_Create(t *testing.T) {
 				HostSet: &store.HostSet{
 					CatalogId:   cat.GetPublicId(),
 					Description: "test-description",
-					Attributes:  []byte("{}"),
+					Attributes:  []byte{},
 				},
 			},
 		},
@@ -123,13 +125,18 @@ func TestHostSet_Create(t *testing.T) {
 			args: args{
 				catalogId: cat.GetPublicId(),
 				opts: []Option{
-					WithAttributes(map[string]interface{}{"foo": "bar"}),
+					WithAttributes(&structpb.Struct{Fields: map[string]*structpb.Value{"foo": structpb.NewStringValue("bar")}}),
 				},
 			},
 			want: &HostSet{
 				HostSet: &store.HostSet{
-					CatalogId:  cat.GetPublicId(),
-					Attributes: []byte(`{"foo":"bar"}`),
+					CatalogId: cat.GetPublicId(),
+					Attributes: func() []byte {
+						st := &structpb.Struct{Fields: map[string]*structpb.Value{"foo": structpb.NewStringValue("bar")}}
+						b, err := proto.Marshal(st)
+						require.NoError(t, err)
+						return b
+					}(),
 				},
 			},
 		},
@@ -145,7 +152,7 @@ func TestHostSet_Create(t *testing.T) {
 				HostSet: &store.HostSet{
 					CatalogId:          cat.GetPublicId(),
 					PreferredEndpoints: []string{"cidr:1.2.3.4"},
-					Attributes:         []byte("{}"),
+					Attributes:         []byte{},
 				},
 			},
 		},