| 64 | } |
| 65 | |
| 66 | func newSequenceAllocator(ctx context.Context, datastore base.DataStore, dbStatsMap *base.DatabaseStats, metaKeys *base.MetadataKeys) (*sequenceAllocator, error) { |
| 67 | if dbStatsMap == nil { |
| 68 | return nil, fmt.Errorf("dbStatsMap parameter must be non-nil") |
| 69 | } |
| 70 | |
| 71 | s := &sequenceAllocator{ |
| 72 | datastore: datastore, |
| 73 | dbStats: dbStatsMap, |
| 74 | metaKeys: metaKeys, |
| 75 | } |
| 76 | s.terminator = make(chan struct{}) |
| 77 | s.sequenceBatchSize = idleBatchSize |
| 78 | s.releaseSequenceWait = defaultReleaseSequenceWait |
| 79 | |
| 80 | // The reserveNotify channel manages communication between the releaseSequenceMonitor goroutine and _reserveSequenceRange invocations. |
| 81 | s.reserveNotify = make(chan struct{}, 1) |
| 82 | _, err := s.lastSequence(ctx) // just reads latest sequence from bucket |
| 83 | if err != nil { |
| 84 | return nil, err |
| 85 | } |
| 86 | go func() { |
| 87 | defer base.FatalPanicHandler() |
| 88 | s.releaseSequenceMonitor(ctx) |
| 89 | }() |
| 90 | return s, err |
| 91 | } |
| 92 | |
| 93 | func (s *sequenceAllocator) Stop(ctx context.Context) { |
| 94 | |