[chore] Bump go swagger (#2871)

* bump go swagger version

* bump swagger version

1 files changed, 33 insertions, 9 deletions

diff --git a/vendor/github.com/go-openapi/analysis/internal/flatten/replace/replace.go b/vendor/github.com/go-openapi/analysis/internal/flatten/replace/replace.go
index 26c2a05a3..c0f43e728 100644
--- a/vendor/github.com/go-openapi/analysis/internal/flatten/replace/replace.go
+++ b/vendor/github.com/go-openapi/analysis/internal/flatten/replace/replace.go
@@ -1,6 +1,7 @@
 package replace
 
 import (
+	"encoding/json"
 	"fmt"
 	"net/url"
 	"os"
@@ -40,6 +41,8 @@ func RewriteSchemaToRef(sp *spec.Swagger, key string, ref spec.Ref) error {
 		if refable.Schema != nil {
 			refable.Schema = &spec.Schema{SchemaProps: spec.SchemaProps{Ref: ref}}
 		}
+	case map[string]interface{}: // this happens e.g. if a schema points to an extension unmarshaled as map[string]interface{}
+		return rewriteParentRef(sp, key, ref)
 	default:
 		return fmt.Errorf("no schema with ref found at %s for %T", key, value)
 	}
@@ -120,6 +123,9 @@ func rewriteParentRef(sp *spec.Swagger, key string, ref spec.Ref) error {
 	case spec.SchemaProperties:
 		container[entry] = spec.Schema{SchemaProps: spec.SchemaProps{Ref: ref}}
 
+	case *interface{}:
+		*container = spec.Schema{SchemaProps: spec.SchemaProps{Ref: ref}}
+
 	// NOTE: can't have case *spec.SchemaOrBool = parent in this case is *Schema
 
 	default:
@@ -318,8 +324,8 @@ type DeepestRefResult struct {
 }
 
 // DeepestRef finds the first definition ref, from a cascade of nested refs which are not definitions.
-//  - if no definition is found, returns the deepest ref.
-//  - pointers to external files are expanded
+//   - if no definition is found, returns the deepest ref.
+//   - pointers to external files are expanded
 //
 // NOTE: all external $ref's are assumed to be already expanded at this stage.
 func DeepestRef(sp *spec.Swagger, opts *spec.ExpandOptions, ref spec.Ref) (*DeepestRefResult, error) {
@@ -385,8 +391,9 @@ DOWNREF:
 			err := asSchema.UnmarshalJSON(asJSON)
 			if err != nil {
 				return nil,
-					fmt.Errorf("invalid type for resolved JSON pointer %s. Expected a schema a, got: %T",
-						currentRef.String(), value)
+					fmt.Errorf("invalid type for resolved JSON pointer %s. Expected a schema a, got: %T (%v)",
+						currentRef.String(), value, err,
+					)
 			}
 			warnings = append(warnings, fmt.Sprintf("found $ref %q (response) interpreted as schema", currentRef.String()))
 
@@ -402,8 +409,9 @@ DOWNREF:
 			var asSchema spec.Schema
 			if err := asSchema.UnmarshalJSON(asJSON); err != nil {
 				return nil,
-					fmt.Errorf("invalid type for resolved JSON pointer %s. Expected a schema a, got: %T",
-						currentRef.String(), value)
+					fmt.Errorf("invalid type for resolved JSON pointer %s. Expected a schema a, got: %T (%v)",
+						currentRef.String(), value, err,
+					)
 			}
 
 			warnings = append(warnings, fmt.Sprintf("found $ref %q (parameter) interpreted as schema", currentRef.String()))
@@ -414,9 +422,25 @@ DOWNREF:
 			currentRef = asSchema.Ref
 
 		default:
-			return nil,
-				fmt.Errorf("unhandled type to resolve JSON pointer %s. Expected a Schema, got: %T",
-					currentRef.String(), value)
+			// fallback: attempts to resolve the pointer as a schema
+			if refable == nil {
+				break DOWNREF
+			}
+
+			asJSON, _ := json.Marshal(refable)
+			var asSchema spec.Schema
+			if err := asSchema.UnmarshalJSON(asJSON); err != nil {
+				return nil,
+					fmt.Errorf("unhandled type to resolve JSON pointer %s. Expected a Schema, got: %T (%v)",
+						currentRef.String(), value, err,
+					)
+			}
+			warnings = append(warnings, fmt.Sprintf("found $ref %q (%T) interpreted as schema", currentRef.String(), refable))
+
+			if asSchema.Ref.String() == "" {
+				break DOWNREF
+			}
+			currentRef = asSchema.Ref
 		}
 	}