| 280 | } |
| 281 | |
| 282 | func NewStreamTokenFromString(tok string) (token StreamingToken, err error) { |
| 283 | if len(tok) < 1 { |
| 284 | err = ErrMalformedSyncToken |
| 285 | return |
| 286 | } |
| 287 | if tok[0] != SyncTokenTypeStream[0] { |
| 288 | err = ErrMalformedSyncToken |
| 289 | return |
| 290 | } |
| 291 | // Migration: Remove everything after and including '.' - we previously had tokens like: |
| 292 | // s478_0_0_0_0_13.dl-0-2 but we have now removed partitioned stream positions |
| 293 | tok = strings.Split(tok, ".")[0] |
| 294 | parts := strings.Split(tok[1:], "_") |
| 295 | var positions [9]StreamPosition |
| 296 | for i, p := range parts { |
| 297 | if i >= len(positions) { |
| 298 | break |
| 299 | } |
| 300 | var pos int |
| 301 | pos, err = strconv.Atoi(p) |
| 302 | if err != nil { |
| 303 | err = ErrMalformedSyncToken |
| 304 | return |
| 305 | } |
| 306 | positions[i] = StreamPosition(pos) |
| 307 | } |
| 308 | token = StreamingToken{ |
| 309 | PDUPosition: positions[0], |
| 310 | TypingPosition: positions[1], |
| 311 | ReceiptPosition: positions[2], |
| 312 | SendToDevicePosition: positions[3], |
| 313 | InvitePosition: positions[4], |
| 314 | AccountDataPosition: positions[5], |
| 315 | DeviceListPosition: positions[6], |
| 316 | NotificationDataPosition: positions[7], |
| 317 | PresencePosition: positions[8], |
| 318 | } |
| 319 | return token, nil |
| 320 | } |
| 321 | |
| 322 | // PrevEventRef represents a reference to a previous event in a state event upgrade |
| 323 | type PrevEventRef struct { |