/// <summary>
/// 消息分发 读文件
/// </summary>
/// <param name="node">消息分发节点</param>
/// <param name="config">消息分发 读取配置</param>
internal DistributionFileReader(Distributor node, DistributionConfig config) : base(node.Writer, config ?? defaultConfig)
{
Node = node;
timeoutTicks = Math.Max((config ?? defaultConfig).TimeoutSeconds, 1) * -TimeSpan.TicksPerSecond;
ReaderIndex = -1;
int isReader = 0;
writerAppendIdentity = Writer.NewRead();
try
{
loadStateFile();
long fileIndex = 0;
if (loadIndex(ref fileIndex))
{
messages = new DistributionMessageItem[(int)Config.MemoryCacheNodeCount + FileWriter.MaxPacketCount + 1];
if (Identity == writerAppendIdentity)
{
isReader = 1;
}
else
{
loadFile(fileIndex);
if (loadFile())
{
sendIdentity = Identity;
sendMessageIndex = 0;
isReader = 1;
}
}
}
}
finally
{
if (isReader == 0)
{
Dispose();
}
else
{
DistributionFileReaderTimeout.AddReader(this);
}
}
}
/// <summary>
/// 释放资源
/// </summary>
public void Dispose()
{
if (Interlocked.CompareExchange(ref isDisposed, 1, 0) == 0)
{
DistributionFileReaderTimeout.RemoveReader(this);
dispose();
while (messageIndex != writeMessageIndex)
{
messages[messageIndex].FreeBuffer();
if (++messageIndex == messages.Length)
{
messageIndex = 0;
}
}
while (getterCount != 0)
{
getters[--getterCount].OnDispose();
}
getterIndex = 0;
}
}
