open-nomad/drivers/docker/state.go

// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0

package docker

import (
	"sync"

	"github.com/hashicorp/go-set"
)

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) IDs() *set.Set[string] {
	ts.lock.RLock()
	defer ts.lock.RUnlock()

	s := set.New[string](len(ts.store))
	for _, handle := range ts.store {
		s.Insert(handle.containerID)
	}
	return s
}

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