/
VirtualTreeService.go
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/
VirtualTreeService.go
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/*
* Copyright (C) 2024 Puter Technologies Inc.
*
* This file is part of puter-fuse.
*
* puter-fuse is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package engine
import (
"fmt"
"time"
"github.com/HeyPuter/puter-fuse/lang"
"github.com/HeyPuter/puter-fuse/services"
)
const (
ROOT_UUID = "00000000-0000-0000-0000-000000000000"
)
type VirtualEntry struct {
}
type VirtualDirectoryEntry struct {
// Directories lang.IMap[string, string]
// Files lang.IMap[string, string]
VirtualEntry
MemberUIDToName lang.IMap[string, string]
MemberNameToUID lang.IMap[string, string]
LastReaddir time.Time
}
func CreateVirtualDirectoryEntry() *VirtualDirectoryEntry {
ins := &VirtualDirectoryEntry{}
ins.MemberUIDToName = lang.CreateSyncMap[string, string](nil)
ins.MemberNameToUID = lang.CreateSyncMap[string, string](nil)
return ins
}
type VirtualFileEntry struct {
VirtualEntry
}
func CreateVirtualFileEntry() *VirtualFileEntry {
ins := &VirtualFileEntry{}
return ins
}
func (v *VirtualDirectoryEntry) GetUIDs() []string {
return v.MemberUIDToName.Keys()
}
type VirtualTreeService struct {
DirectoriesCacheLock *lang.CacheStampedeMap[string]
Directories lang.IMap[string, *VirtualDirectoryEntry]
Files lang.IMap[string, *VirtualFileEntry]
}
func (svc *VirtualTreeService) Init(services services.IServiceContainer) {
svc.Directories.Set(ROOT_UUID, CreateVirtualDirectoryEntry())
}
func CreateVirtualTreeService() *VirtualTreeService {
ins := &VirtualTreeService{}
ins.Directories = lang.CreateSyncMap[string, *VirtualDirectoryEntry](nil)
ins.Files = lang.CreateSyncMap[string, *VirtualFileEntry](nil)
ins.DirectoriesCacheLock = lang.CreateCacheStampedeMap[string]()
return ins
}
func (svc *VirtualTreeService) ResolvePath(parts []string) *VirtualDirectoryEntry {
node, _ := svc.Directories.Get(ROOT_UUID)
for _, part := range parts {
dirUid, ok := node.MemberNameToUID.Get(part)
if !ok {
return nil
}
node, ok = svc.Directories.Get(dirUid)
if !ok {
return nil
}
}
return node
}
func (svc *VirtualTreeService) RegisterDirectory(uid string) string {
svc.Directories.Set(uid, CreateVirtualDirectoryEntry())
return uid
}
func (svc *VirtualTreeService) RegisterFile(uid string) string {
svc.Files.Set(uid, CreateVirtualFileEntry())
return uid
}
func (svc *VirtualTreeService) Link(parentUID, childUID, name string) {
fmt.Println("linking", parentUID, childUID, name)
entry, _ := svc.Directories.Get(parentUID)
entry.MemberUIDToName.Set(childUID, name)
entry.MemberNameToUID.Set(name, childUID)
}
func (svc *VirtualTreeService) Unlink(parentUID, childUID string) {
entry, _ := svc.Directories.Get(parentUID)
name, _ := entry.MemberUIDToName.Get(childUID)
entry.MemberUIDToName.Del(childUID)
entry.MemberNameToUID.Del(name)
}
func (svc *VirtualTreeService) UpdateLastReaddir(uid string) {
entry, _ := svc.Directories.Get(uid)
entry.LastReaddir = time.Now()
}
// func (svc *VirtualTreeService) GetNodesFromEntry(entry *VirtualDirectoryEntry) []fao.NodeInfo {
// nodes := []fao.NodeInfo{}
// for _, fileUid := range entry.Files.Values() {
// file, _ := svc.Files.Get(fileUid)
// nodes = append(nodes, file.NodeInfo)
// }
// for _, dirUid := range entry.Directories.Values() {
// dir, _ := svc.Directories.Get(dirUid)
// nodes = append(nodes, dir.NodeInfo)
// }
// return nodes
// }