go mod vendor

+ move k8s.io/apimachinery fork from go.work to go.mod
(and include it in vendor)

vendor/go.mongodb.org/mongo-driver/mongo/readpref/mode.go

@@ -0,0 +1,88 @@
+// 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 readpref
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Mode indicates the user's preference on reads.
+type Mode uint8
+
+// Mode constants
+const (
+	_ Mode = iota
+	// PrimaryMode indicates that only a primary is
+	// considered for reading. This is the default
+	// mode.
+	PrimaryMode
+	// PrimaryPreferredMode indicates that if a primary
+	// is available, use it; otherwise, eligible
+	// secondaries will be considered.
+	PrimaryPreferredMode
+	// SecondaryMode indicates that only secondaries
+	// should be considered.
+	SecondaryMode
+	// SecondaryPreferredMode indicates that only secondaries
+	// should be considered when one is available. If none
+	// are available, then a primary will be considered.
+	SecondaryPreferredMode
+	// NearestMode indicates that all primaries and secondaries
+	// will be considered.
+	NearestMode
+)
+
+// ModeFromString returns a mode corresponding to
+// mode.
+func ModeFromString(mode string) (Mode, error) {
+	switch strings.ToLower(mode) {
+	case "primary":
+		return PrimaryMode, nil
+	case "primarypreferred":
+		return PrimaryPreferredMode, nil
+	case "secondary":
+		return SecondaryMode, nil
+	case "secondarypreferred":
+		return SecondaryPreferredMode, nil
+	case "nearest":
+		return NearestMode, nil
+	}
+	return Mode(0), fmt.Errorf("unknown read preference %v", mode)
+}
+
+// String returns the string representation of mode.
+func (mode Mode) String() string {
+	switch mode {
+	case PrimaryMode:
+		return "primary"
+	case PrimaryPreferredMode:
+		return "primaryPreferred"
+	case SecondaryMode:
+		return "secondary"
+	case SecondaryPreferredMode:
+		return "secondaryPreferred"
+	case NearestMode:
+		return "nearest"
+	default:
+		return "unknown"
+	}
+}
+
+// IsValid checks whether the mode is valid.
+func (mode Mode) IsValid() bool {
+	switch mode {
+	case PrimaryMode,
+		PrimaryPreferredMode,
+		SecondaryMode,
+		SecondaryPreferredMode,
+		NearestMode:
+		return true
+	default:
+		return false
+	}
+}