示例#1
0
 /// <summary>
 /// 设置下一个buffer
 /// </summary>
 /// <param name="idBuffer"></param>
 public void SetNextBuffer(IdBuffer idBuffer)
 {
     //更新阈值
     _loadNextBufferThresholdLv1 = idBuffer.Current + (long)((idBuffer.Max - idBuffer.Current) * 0.1);
     _nextBuffer        = idBuffer;
     _loadingNextBuffer = false;
 }
示例#2
0
        public SequencedIdGenerator(SequencedIdGeneratorOptions options, IdBuffer idBuffer)
        {
            _options = options;
            options.MachineRoomId &= 0x1f;

            _currentBuffer = idBuffer ?? throw new ArgumentNullException(nameof(idBuffer));
            _loadNextBufferThresholdLv1 = idBuffer.Current + (long)((idBuffer.Max - idBuffer.Current) * 0.1);
        }
        private async Task LoadNextBufferAsync(string businessId)
        {
            var idSequenceBuffer = await _idSequenceStore.GetBufferAsync(businessId);

            IdBuffer idBuffer = new IdBuffer(idSequenceBuffer.CurrentId, idSequenceBuffer.MaxId);

            if (_idSequences.TryGetValue(businessId, out SequencedIdGenerator idSequence))
            {
                idSequence.SetNextBuffer(idBuffer);
            }
        }
        private SequencedIdGenerator CreateIdSequence(string businessId)
        {
            var idSequenceBuffer = _idSequenceStore.GetBufferAsync(businessId).ConfigureAwait(true).GetAwaiter().GetResult();
            var options          = new SequencedIdGeneratorOptions()
            {
                UseMachineRoomId     = idSequenceBuffer.UseMachineRoomId,
                MachineRoomId        = idSequenceBuffer.MachineRoomId,
                UseRandomTail        = idSequenceBuffer.UseRandomTail,
                NotifyLoadNextBuffer = NotifyLoadNextBuffer
            };
            IdBuffer             idBuffer   = new IdBuffer(idSequenceBuffer.CurrentId, idSequenceBuffer.MaxId);
            SequencedIdGenerator idSequence = new SequencedIdGenerator(options, idBuffer);

            return(idSequence);
        }
示例#5
0
 /// <summary>
 /// 使用下一个Buffer
 /// </summary>
 /// <param name="oldBuffer"></param>
 private void UseNextBuffer(IdBuffer oldBuffer)
 {
     if (oldBuffer == _currentBuffer)
     {
         lock (_changeBufferLocker)
         {
             if (oldBuffer == _currentBuffer)
             {
                 if (_nextBuffer != null && _nextBuffer.Current > _currentBuffer.Max)
                 {
                     _currentBuffer = _nextBuffer;
                     _nextBuffer    = null;
                 }
                 else
                 {
                     throw new Exception("下一个Id缓冲未就绪!");
                 }
             }
         }
     }
 }
示例#6
0
        public long Next()
        {
            if (NeedPrepareNextBuffer())
            {
                SendPrepareNextBufferMessage();
            }
            IdBuffer buffer = _currentBuffer;
            long     newId;

            if (buffer.TryNext(out newId))
            {
                return(Process(newId));
            }
            else
            {
                UseNextBuffer(buffer);
                buffer = _currentBuffer;
                if (buffer.TryNext(out newId))
                {
                    return(Process(newId));
                }
                throw new Exception("缓冲没有可用Id");
            }
        }