/*
Copyright 2020 Roblox Corporation

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 containerd

import (
	"sync"
)

// taskStore provides a mechanism to store and retrieve
// task handles given a string identifier. The ID should
// be unique per task
type taskStore struct {
	store map[string]*taskHandle
	lock  sync.RWMutex
}

func newTaskStore() *taskStore {
	return &taskStore{store: map[string]*taskHandle{}}
}

func (ts *taskStore) Set(id string, handle *taskHandle) {
	ts.lock.Lock()
	defer ts.lock.Unlock()
	ts.store[id] = handle
}

func (ts *taskStore) Get(id string) (*taskHandle, bool) {
	ts.lock.RLock()
	defer ts.lock.RUnlock()
	t, ok := ts.store[id]
	return t, ok
}

func (ts *taskStore) Delete(id string) {
	ts.lock.Lock()
	defer ts.lock.Unlock()
	delete(ts.store, id)
}