升级流程引擎配置文件版本

vendor/go.mongodb.org/mongo-driver/internal/string_util.go

@@ -0,0 +1,45 @@
+// Copyright (C) MongoDB, Inc. 2017-present.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+
+package internal
+
+import (
+	"fmt"
+
+	"go.mongodb.org/mongo-driver/bson"
+)
+
+// StringSliceFromRawElement decodes the provided BSON element into a []string. This internally calls
+// StringSliceFromRawValue on the element's value. The error conditions outlined in that function's documentation
+// apply for this function as well.
+func StringSliceFromRawElement(element bson.RawElement) ([]string, error) {
+	return StringSliceFromRawValue(element.Key(), element.Value())
+}
+
+// StringSliceFromRawValue decodes the provided BSON value into a []string. This function returns an error if the value
+// is not an array or any of the elements in the array are not strings. The name parameter is used to add context to
+// error messages.
+func StringSliceFromRawValue(name string, val bson.RawValue) ([]string, error) {
+	arr, ok := val.ArrayOK()
+	if !ok {
+		return nil, fmt.Errorf("expected '%s' to be an array but it's a BSON %s", name, val.Type)
+	}
+
+	arrayValues, err := arr.Values()
+	if err != nil {
+		return nil, err
+	}
+
+	strs := make([]string, 0, len(arrayValues))
+	for _, arrayVal := range arrayValues {
+		str, ok := arrayVal.StringValueOK()
+		if !ok {
+			return nil, fmt.Errorf("expected '%s' to be an array of strings, but found a BSON %s", name, arrayVal.Type)
+		}
+		strs = append(strs, str)
+	}
+	return strs, nil
+}