move load restrictions

api/types/erronlybuiltinpluginsallowed.go

@@ -0,0 +1,32 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package types
+
+import (
+	"fmt"
+	"github.com/pkg/errors"
+)
+
+type errOnlyBuiltinPluginsAllowed struct {
+	name string
+}
+
+func (e *errOnlyBuiltinPluginsAllowed) Error() string {
+	return fmt.Sprintf(
+		"external plugins disabled; unable to load external plugin '%s'",
+		e.name)
+}
+
+func NewErrOnlyBuiltinPluginsAllowed(n string) *errOnlyBuiltinPluginsAllowed {
+	return &errOnlyBuiltinPluginsAllowed{name: n}
+}
+
+func IsErrOnlyBuiltinPluginsAllowed(err error) bool {
+	_, ok := err.(*errOnlyBuiltinPluginsAllowed)
+	if ok {
+		return true
+	}
+	_, ok = errors.Cause(err).(*errOnlyBuiltinPluginsAllowed)
+	return ok
+}

api/types/loadrestrictions.go

@@ -0,0 +1,24 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package types
+
+// Restrictions on what things can be referred to
+// in a kustomization file.
+//
+//go:generate stringer -type=LoadRestrictions
+type LoadRestrictions int
+
+const (
+	LoadRestrictionsUnknown LoadRestrictions = iota
+
+	// Files referenced by a kustomization file must be in
+	// or under the directory holding the kustomization
+	// file itself.
+	LoadRestrictionsRootOnly
+
+	// The kustomization file may specify absolute or
+	// relative paths to patch or resources files outside
+	// its own tree.
+	LoadRestrictionsNone
+)

api/types/loadrestrictions_string.go

@@ -0,0 +1,25 @@
+// Code generated by "stringer -type=LoadRestrictions"; DO NOT EDIT.
+
+package types
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[LoadRestrictionsUnknown-0]
+	_ = x[LoadRestrictionsRootOnly-1]
+	_ = x[LoadRestrictionsNone-2]
+}
+
+const _LoadRestrictions_name = "LoadRestrictionsUnknownLoadRestrictionsRootOnlyLoadRestrictionsNone"
+
+var _LoadRestrictions_index = [...]uint8{0, 23, 47, 67}
+
+func (i LoadRestrictions) String() string {
+	if i < 0 || i >= LoadRestrictions(len(_LoadRestrictions_index)-1) {
+		return "LoadRestrictions(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _LoadRestrictions_name[_LoadRestrictions_index[i]:_LoadRestrictions_index[i+1]]
+}

api/types/pluginconfig.go

@@ -11,6 +11,7 @@ type PluginConfig struct {
 	// further categorizing plugins.
 	DirectoryPath string
 
-	// Enabled is true if plugins are enabled.
-	Enabled bool
+	// PluginRestrictions defines the plugin restriction state.
+	// See type for more information.
+	PluginRestrictions PluginRestrictions
 }

api/types/pluginrestrictions.go

@@ -0,0 +1,28 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package types
+
+// Some plugin classes
+// - builtin: plugins defined in the kustomize repo.
+//   May be freely used and re-configured.
+// - local: plugins that aren't builtin but are
+//   locally defined (presumably by the user), meaning
+//   the kustomization refers to them via a relative
+//   file path, not a URL.
+// - remote: require a build-time download to obtain.
+//   Unadvised, unless one controls the
+//   serving site.
+//
+//go:generate stringer -type=PluginRestrictions
+type PluginRestrictions int
+
+const (
+	PluginRestrictionsUnknown PluginRestrictions = iota
+
+	// Non-builtin plugins completely disabled.
+	PluginRestrictionsBuiltinsOnly
+
+	// No restrictions, do whatever you want.
+	PluginRestrictionsNone
+)

api/types/pluginrestrictions_string.go

@@ -0,0 +1,25 @@
+// Code generated by "stringer -type=PluginRestrictions"; DO NOT EDIT.
+
+package types
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[PluginRestrictionsUnknown-0]
+	_ = x[PluginRestrictionsBuiltinsOnly-1]
+	_ = x[PluginRestrictionsNone-2]
+}
+
+const _PluginRestrictions_name = "PluginRestrictionsUnknownPluginRestrictionsBuiltinsOnlyPluginRestrictionsNone"
+
+var _PluginRestrictions_index = [...]uint8{0, 25, 55, 77}
+
+func (i PluginRestrictions) String() string {
+	if i < 0 || i >= PluginRestrictions(len(_PluginRestrictions_index)-1) {
+		return "PluginRestrictions(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _PluginRestrictions_name[_PluginRestrictions_index[i]:_PluginRestrictions_index[i+1]]
+}