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bool.go
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bool.go
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// Copyright 2017 The Cockroach Authors.
//
// 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
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
package settings
// BoolSetting is the interface of a setting variable that will be
// updated automatically when the corresponding cluster-wide setting
// of type "bool" is updated.
type BoolSetting struct {
common
defaultValue bool
}
var _ Setting = &BoolSetting{}
// Get retrieves the bool value in the setting.
func (b *BoolSetting) Get(sv *Values) bool {
return sv.getInt64(b.slotIdx) != 0
}
func (b *BoolSetting) String(sv *Values) string {
return EncodeBool(b.Get(sv))
}
// Typ returns the short (1 char) string denoting the type of setting.
func (*BoolSetting) Typ() string {
return "b"
}
// Override changes the setting without validation.
// For testing usage only.
func (b *BoolSetting) Override(sv *Values, v bool) {
vInt := int64(0)
if v {
vInt = 1
}
sv.setInt64(b.slotIdx, vInt)
}
func (b *BoolSetting) set(sv *Values, v bool) {
b.Override(sv, v)
}
func (b *BoolSetting) setToDefault(sv *Values) {
b.set(sv, b.defaultValue)
}
// RegisterBoolSetting defines a new setting with type bool.
func RegisterBoolSetting(key, desc string, defaultValue bool) *BoolSetting {
setting := &BoolSetting{defaultValue: defaultValue}
register(key, desc, setting)
return setting
}