Pin dependencies and update vendors

vendor/github.com/grpc-ecosystem/grpc-gateway/runtime/fieldmask.go

@@ -0,0 +1,70 @@
+package runtime
+
+import (
+	"encoding/json"
+	"io"
+	"strings"
+
+	"github.com/golang/protobuf/protoc-gen-go/generator"
+	"google.golang.org/genproto/protobuf/field_mask"
+)
+
+// FieldMaskFromRequestBody creates a FieldMask printing all complete paths from the JSON body.
+func FieldMaskFromRequestBody(r io.Reader) (*field_mask.FieldMask, error) {
+	fm := &field_mask.FieldMask{}
+	var root interface{}
+	if err := json.NewDecoder(r).Decode(&root); err != nil {
+		if err == io.EOF {
+			return fm, nil
+		}
+		return nil, err
+	}
+
+	queue := []fieldMaskPathItem{{node: root}}
+	for len(queue) > 0 {
+		// dequeue an item
+		item := queue[0]
+		queue = queue[1:]
+
+		if m, ok := item.node.(map[string]interface{}); ok {
+			// if the item is an object, then enqueue all of its children
+			for k, v := range m {
+				queue = append(queue, fieldMaskPathItem{path: append(item.path, generator.CamelCase(k)), node: v})
+			}
+		} else if len(item.path) > 0 {
+			// otherwise, it's a leaf node so print its path
+			fm.Paths = append(fm.Paths, strings.Join(item.path, "."))
+		}
+	}
+
+	return fm, nil
+}
+
+// fieldMaskPathItem stores a in-progress deconstruction of a path for a fieldmask
+type fieldMaskPathItem struct {
+	// the list of prior fields leading up to node
+	path []string
+
+	// a generic decoded json object the current item to inspect for further path extraction
+	node interface{}
+}
+
+// CamelCaseFieldMask updates the given FieldMask by converting all of its paths to CamelCase, using the same heuristic
+// that's used for naming protobuf fields in Go.
+func CamelCaseFieldMask(mask *field_mask.FieldMask) {
+	if mask == nil || mask.Paths == nil {
+		return
+	}
+
+	var newPaths []string
+	for _, path := range mask.Paths {
+		lowerCasedParts := strings.Split(path, ".")
+		var camelCasedParts []string
+		for _, part := range lowerCasedParts {
+			camelCasedParts = append(camelCasedParts, generator.CamelCase(part))
+		}
+		newPaths = append(newPaths, strings.Join(camelCasedParts, "."))
+	}
+
+	mask.Paths = newPaths
+}