// Licensed to Apache Software Foundation (ASF) under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Apache Software Foundation (ASF) licenses this file to you 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 tools

import "github.com/apache/skywalking-go/plugins/core/operator"

type SyncMap interface {
	Put(key string, value interface{})
	Get(key string) (interface{}, bool)
	Remove(key string) (interface{}, bool)
}

func NewSyncMap() SyncMap {
	op := operator.GetOperator()
	if op == nil {
		return &defaultSyncMap{}
	}
	return op.Tools().(operator.ToolsOperator).NewSyncMap().(SyncMap)
}

type defaultSyncMap struct {
}

func (d *defaultSyncMap) Put(key string, value interface{}) {
}
func (d *defaultSyncMap) Get(key string) (interface{}, bool) {
	return nil, false
}
func (d *defaultSyncMap) Remove(key string) (interface{}, bool) {
	return nil, false
}
