//II.保存区块解析中断时的上下文状态
public void saveBlockProcessContext()
{
if (countOfFileBlock(blockCountOfFile) != blockReadBlocksFromFile.Count)
{
Console.WriteLine("读取文件总数和区块池文件总数不一致");
}
else
{
record_OrphanBlock();
fileStatusList.Clear();
int readBlockPointer = 0;
for (int i = 0; i < blockCountOfFile.Count; i++)
{
string fileName = get_filename(i);
int totalBlocks = blockCountOfFile[i];
int unusedBlocks = 0;
List <string> unusedBlockHash = new List <string>();
for (int j = 0; j < blockCountOfFile[i]; j++)
{
if (blockReadBlocksFromFile[readBlockPointer] != null)
{
unusedBlockHash.Add(blockReadBlocksFromFile[readBlockPointer].Header.GetHash().ToString());
unusedBlocks++;
}
readBlockPointer++;
}
fileStatusList.Add(new FileStatusItem_Class(fileName, totalBlocks, unusedBlocks, unusedBlockHash));
}
string blockProcessContextFileFinalPath = Path.Combine(blockProcessContextFilePath, "BPC_" + processedBlockAmount + "_" +
lastProcessedBlockElement.Header.BlockTime.ToString("yyyy年MM月dd日HH时mm分ss秒") + ".dat");
BlockProcessContextModel_Class blockProcessContextModel = new BlockProcessContextModel_Class(fileStatusList, forkedBlockList, orphanBlockList,
lastProcessedBlockElement.Header.GetHash().ToString(), processedBlockAmount, blockReadPointer, currentLoadFileNumber,
lastProcessedBlockElement.Header.BlockTime.DateTime);
using (StreamWriter sw = File.CreateText(blockProcessContextFileFinalPath))
{
JsonSerializer serializer = new JsonSerializer();
serializer.Serialize(sw, blockProcessContextModel);
}
Compress(blockProcessContextFileFinalPath, true);
}
}
//l.从给定的BPC文件恢复程序状态
public void restore_BlockProcessContextForProgram()
{
string blockProcessContextFileFinalPath = Path.Combine(blockProcessContextFilePath, blockProcessContextFileName);
//判断给定文件名是压缩文件还是txt文件
FileInfo fileName = new FileInfo(blockProcessContextFileFinalPath);
if (fileName.Extension == ".rar")
{
Console.WriteLine("正在解压BPC下文状态文件......");
Decompress(blockProcessContextFileFinalPath, false);
blockProcessContextFileFinalPath = Path.Combine(blockProcessContextFilePath, Path.GetFileNameWithoutExtension(blockProcessContextFileFinalPath));
}
if (File.Exists(blockProcessContextFileFinalPath))
{
//1.反序列化BPC文件
Console.WriteLine("开始提取程序上下文状态文件数据(BPC).........");
BlockProcessContextModel_Class blockProcessContextModelObject = null;
Stopwatch timer = new Stopwatch();
timer.Start();
try
{
using (StreamReader sr = File.OpenText(blockProcessContextFileFinalPath))
{
JsonSerializer jsonSerializer = new JsonSerializer();
blockProcessContextModelObject = jsonSerializer.Deserialize(sr, typeof(BlockProcessContextModel_Class)) as BlockProcessContextModel_Class;
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
Console.WriteLine("BPC文件保存不完整或已经损坏。该错误可能是由于在保存BPC文件时提前终止程序造成的，或是人为修改了最近的BPC文件。");
}
timer.Stop();
Console.WriteLine("提取结束,反序列化切片用时:" + timer.Elapsed);
//2.恢复区块池
Console.WriteLine("开始恢复区块池.........");
Stopwatch timer1 = new Stopwatch();
timer1.Start();
restore_blockReadBlocksFromFile(blockProcessContextModelObject.fileStatusList);
timer1.Stop();
Console.WriteLine("恢复区块池用时:" + timer1.Elapsed);
//3.恢复参数
forkedBlockList = blockProcessContextModelObject.forkedBlockList;
orphanBlockList = blockProcessContextModelObject.orphanBlockList;
blockReadPointer = blockProcessContextModelObject.blockReadPointer;
currentLoadFileNumber = blockProcessContextModelObject.currentLoadFileNumber;
processedBlockAmount = blockProcessContextModelObject.processedBlockAmount;
recentlySliceDateTime = blockProcessContextModelObject.blockProcessContextDatetime;
blockProcessContextModelObject.Dispose();
//4.恢复队列池
Console.WriteLine("开始恢复区块队列.........");
Stopwatch timer2 = new Stopwatch();
timer2.Start();
ParserBlock queueBlock;
if ((queueBlock = restore_QueueHeaderBlock(blockProcessContextModelObject.lastProcessedBlockHash)) != null)
{
initialize_BlockQueuePooling(queueBlock);
}
else
{
Console.WriteLine("队首区块未找到,恢复失败!!!");
}
timer2.Stop();
Console.WriteLine("恢复区块队列用时:" + timer2.Elapsed);
Console.WriteLine("BPC上下文状态恢复成功.........");
File.Delete(blockProcessContextFileFinalPath);//删除解压后的文件BPC文件
}
else
{
Console.WriteLine(blockProcessContextFileFinalPath + " 文件不存在!!!");
}
}
