//  Copyright Istio 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 locality

import (
	"fmt"
	"strings"
)

type Instance struct {
	Zone   string
	Region string
}

func (l Instance) String() string {
	return fmt.Sprintf("%s/%s", l.Region, l.Zone)
}

func Parse(s string) Instance {
	parts := strings.Split(s, "/")
	if len(parts) != 2 {
		panic("invalid locality string: " + s)
	}
	return Instance{
		Region: parts[0],
		Zone:   parts[1],
	}
}
