package folder import ( "fmt" "io/ioutil" "os" "path/filepath" "strings" common "github.com/iotbzh/xds-common/golib" "github.com/iotbzh/xds-server/lib/xdsconfig" uuid "github.com/satori/go.uuid" ) // IFOLDER interface implementation for native/path mapping folders // PathMap . type PathMap struct { globalConfig *xdsconfig.Config config FolderConfig } // NewFolderPathMap Create a new instance of PathMap func NewFolderPathMap(gc *xdsconfig.Config) *PathMap { f := PathMap{ globalConfig: gc, config: FolderConfig{ Status: StatusDisable, }, } return &f } // NewUID Get a UUID func (f *PathMap) NewUID(suffix string) string { uuid := uuid.NewV1().String() if len(suffix) > 0 { uuid += "_" + suffix } return uuid } // Add a new folder func (f *PathMap) Add(cfg FolderConfig) (*FolderConfig, error) { if cfg.DataPathMap.ServerPath == "" { return nil, fmt.Errorf("ServerPath must be set") } // Use shareRootDir if ServerPath is a relative path dir := cfg.DataPathMap.ServerPath if !filepath.IsAbs(dir) { dir = filepath.Join(f.globalConfig.FileConf.ShareRootDir, dir) } // Sanity check if !common.Exists(dir) { // try to create if not existing if err := os.MkdirAll(dir, 0755); err != nil { return nil, fmt.Errorf("Cannot create ServerPath directory: %s", dir) } } if !common.Exists(dir) { return nil, fmt.Errorf("ServerPath directory is not accessible: %s", dir) } f.config = cfg f.config.RootPath = dir f.config.DataPathMap.ServerPath = dir f.config.IsInSync = true // Verify file created by XDS agent when needed if cfg.DataPathMap.CheckFile != "" { errMsg := "ServerPath sanity check error (%d): %v" ckFile := f.ConvPathCli2Svr(cfg.DataPathMap.CheckFile) if !common.Exists(ckFile) { return nil, fmt.Errorf(errMsg, 1, "file not present") } if cfg.DataPathMap.CheckContent != "" { fd, err := os.OpenFile(ckFile, os.O_APPEND|os.O_RDWR, 0600) if err != nil { return nil, fmt.Errorf(errMsg, 2, err) } defer fd.Close() // Check specific message written by agent content, err := ioutil.ReadAll(fd) if err != nil { return nil, fmt.Errorf(errMsg, 3, err) } if string(content) != cfg.DataPathMap.CheckContent { return nil, fmt.Errorf(errMsg, 4, "file content differ") } // Write a specific message that will be check back on agent side msg := "Pathmap checked message written by xds-server ID: " + f.globalConfig.ServerUID + "\n" if n, err := fd.WriteString(msg); n != len(msg) || err != nil { return nil, fmt.Errorf(errMsg, 5, err) } } } f.config.Status = StatusEnable return &f.config, nil } // GetConfig Get public part of folder config func (f *PathMap) GetConfig() FolderConfig { return f.config } // GetFullPath returns the full path of a directory (from server POV) func (f *PathMap) GetFullPath(dir string) string { if &dir == nil { return f.config.DataPathMap.ServerPath } return filepath.Join(f.config.DataPathMap.ServerPath, dir) } // ConvPathCli2Svr Convert path from Client to Server func (f *PathMap) ConvPathCli2Svr(s string) string { if f.config.ClientPath != "" && f.config.DataPathMap.ServerPath != "" { return strings.Replace(s, f.config.ClientPath, f.config.DataPathMap.ServerPath, -1) } return s } // ConvPathSvr2Cli Convert path from Server to Client func (f *PathMap) ConvPathSvr2Cli(s string) string { if f.config.ClientPath != "" && f.config.DataPathMap.ServerPath != "" { return strings.Replace(s, f.config.DataPathMap.ServerPath, f.config.ClientPath, -1) } return s } // Remove a folder func (f *PathMap) Remove() error { // nothing to do return nil } // RegisterEventChange requests registration for folder change event func (f *PathMap) RegisterEventChange(cb *EventCB, data *EventCBData) error { return nil } // UnRegisterEventChange remove registered callback func (f *PathMap) UnRegisterEventChange() error { return nil } // Sync Force folder files synchronization func (f *PathMap) Sync() error { return nil } // IsInSync Check if folder files are in-sync func (f *PathMap) IsInSync() (bool, error) { return true, nil }