public IEnumerator GetEnumerator()
{
string strError = "";
int nRet = 0;
if ((this.LogType & LogType.AccessLog) != 0 &&
(this.LogType & LogType.OperLog) != 0)
{
throw new ArgumentException("OperLogLoader 的 LogType 只能使用一种类型");
}
if (string.IsNullOrEmpty(this.CacheDir) == false)
{
TryCreateDir(this.CacheDir);
}
// ProgressEstimate estimate = new ProgressEstimate();
bool bAutoCache = this.AutoCache;
if (bAutoCache == true)
{
// 象征性获得一个日志文件的尺寸，主要目的是为了触发一次通道登录
// return:
// -2 此类型的日志尚未启用
// -1 error
// 0 file not found
// 1 found
nRet = GetFileSize(
this.Stop,
this.Channel,
this.CacheDir,
"20121001.log",
this.LogType,
out long lServerFileSize,
out long lCacheFileSize,
out strError);
if (nRet == -1)
{
throw new ChannelException(this.Channel.ErrorCode, strError);
}
// 2015/11/25
if (nRet == -2)
{
yield break; // 此类型的日志尚未启用
}
// 检查日志文件缓存目录的版本是否和当前用户的信息一致
// return:
// -1 出错
// 0 一致
// 1 不一致
nRet = DetectCacheVersionFile(
this.CacheDir,
"version.xml",
this.Channel.LibraryCodeList,
this.Channel.Url,
out strError);
if (nRet == -1)
{
throw new Exception(strError);
}
if (nRet == 1)
{
REDO:
// 清空当前缓存目录
nRet = DeleteDataDir(
this.CacheDir,
out strError);
if (nRet == -1)
{
if (this.Prompt != null)
{
MessagePromptEventArgs e = new MessagePromptEventArgs();
e.MessageText = "清空当前缓存目录时发生错误： " + strError;
e.Actions = "yes,no,cancel";
this.Prompt(this, e);
if (e.ResultAction == "cancel")
{
throw new InterruptException(strError);
}
else if (e.ResultAction == "yes")
{
goto REDO;
}
else
{
}
}
else
{
throw new Exception(strError);
}
}
#if NO
if (nRet == -1)
{
throw new Exception(strError);
}
#endif
TryCreateDir(this.CacheDir); // 重新创建目录
// 创建版本文件
nRet = CreateCacheVersionFile(
this.CacheDir,
"version.xml",
this.Channel.LibraryCodeList,
this.Channel.Url,
out strError);
if (nRet == -1)
{
throw new Exception(strError);
}
}
}
long lTotalSize = 0;
List <string> lines = new List <string>(); // 经过处理后排除了不存在的文件名
List <string> ranges = new List <string>(); // 日期后面的偏移部分
List <long> sizes = new List <long>(); // 服务器日志文件的尺寸
#if NO
this.Stop.SetMessage("正在准备获得日志文件尺寸 ...");
foreach (string strLine in this.FileNames)
{
// Application.DoEvents();
if (this.Stop != null && this.Stop.State != 0)
{
strError = "用户中断";
throw new InterruptException(strError);
// yield break; ?
}
if (String.IsNullOrEmpty(strLine) == true)
{
continue;
}
string strFilename = strLine.Trim();
// 去掉注释
nRet = strFilename.IndexOf("#");
if (nRet != -1)
{
strFilename = strFilename.Substring(0, nRet).Trim();
}
if (String.IsNullOrEmpty(strFilename) == true)
{
continue;
}
string strLogFilename = "";
string strRange = "";
nRet = strFilename.IndexOf(":");
if (nRet != -1)
{
strLogFilename = strFilename.Substring(0, nRet).Trim();
strRange = strFilename.Substring(nRet + 1).Trim();
}
else
{
strLogFilename = strFilename.Trim();
strRange = "";
}
if (strLogFilename.Length == 8)
{
strLogFilename += ".log";
}
REDO_GETSIZE:
long lServerFileSize = 0;
long lCacheFileSize = 0;
// 获得一个日志文件的尺寸
// -2 此类型的日志尚未启用
// -1 error
// 0 file not found
// 1 found
nRet = GetFileSize(
this.Stop,
this.Channel,
this.CacheDir,
strLogFilename,
this.LogType,
out lServerFileSize,
out lCacheFileSize,
out strError);
if (nRet == -1)
{
// throw new Exception(strError);
if (this.Prompt != null)
{
MessagePromptEventArgs e = new MessagePromptEventArgs();
e.MessageText = "获取日志文件 " + strLogFilename + " 尺寸的操作发生错误： " + strError;
e.Actions = "yes,no,cancel";
this.Prompt(this, e);
if (e.ResultAction == "cancel")
{
throw new InterruptException(strError);
}
else if (e.ResultAction == "yes")
{
if (this.Stop != null)
{
this.Stop.Continue();
}
goto REDO_GETSIZE;
}
else
{
// ??
continue;
}
}
else
{
throw new ChannelException(this.Channel.ErrorCode, strError);
}
}
if (nRet == 0)
{
continue;
}
if (lServerFileSize == 0)
{
continue; // 0字节的文件当作不存在处理
}
// 2015/11/25
if (lServerFileSize == -1)
{
yield break; // 此类型的日志尚未启用
}
Debug.Assert(lServerFileSize >= 0, "");
if (bAutoCache == true)
{
if (lCacheFileSize > 0)
{
lTotalSize += lCacheFileSize;
}
else
{
lTotalSize += lServerFileSize;
}
}
else
{
lTotalSize += lServerFileSize;
}
// lines.Add(strFilename);
lines.Add(strLogFilename);
ranges.Add(strRange);
// 记忆每个文件的尺寸，后面就不用获取了?
sizes.Add(lServerFileSize);
}
#endif
// 预先处理一下文件名
List <string> filenames = new List <string>();
foreach (string strLine in this.Dates)
{
if (this.Stop != null && this.Stop.State != 0)
{
strError = "用户中断";
throw new InterruptException(strError);
}
if (String.IsNullOrEmpty(strLine) == true)
{
continue;
}
string strFilename = strLine.Trim();
// 去掉注释
nRet = strFilename.IndexOf("#");
if (nRet != -1)
{
strFilename = strFilename.Substring(0, nRet).Trim();
}
if (String.IsNullOrEmpty(strFilename) == true)
{
continue;
}
#if NO
List <string> parts = StringUtil.ParseTwoPart(strFilename, ":");
string strRange = parts[1];
strFilename = parts[0].Substring(0, 8);
if (string.IsNullOrEmpty(strRange) == false)
{
range_table[strFilename] = strRange; // TODO: 如何防范文件名重复?
}
#endif
filenames.Add(strFilename);
Debug.Assert(strFilename.Length >= 8, "");
}
// 准备查找表
Hashtable length_table = new Hashtable();
{
List <FileSize> size_pairs = GetFilesLength(
// filenames
);
foreach (FileSize size_pair in size_pairs)
{
length_table[size_pair.Date] = size_pair;
}
}
foreach (string filename in filenames)
{
FileSize size_pair = length_table[filename.Substring(0, 8)] as FileSize;
if (size_pair == null)
{
continue;
}
Debug.Assert(size_pair != null, "");
lines.Add(filename);
sizes.Add(size_pair.ServerFileSize);
if (size_pair.ServerFileSize == -1)
{
yield break; // 此类型的日志尚未启用
}
Debug.Assert(size_pair.ServerFileSize >= 0, "");
if (bAutoCache == true)
{
if (size_pair.CacheFileSize > 0)
{
lTotalSize += size_pair.CacheFileSize;
}
else
{
lTotalSize += size_pair.ServerFileSize;
}
}
else
{
lTotalSize += size_pair.ServerFileSize;
}
}
long lDoneSize = 0;
if (this.ProgressStart == -1)
{
lDoneSize = lTotalSize;
}
else
{
lDoneSize = this.ProgressStart;
}
lTotalSize += lDoneSize;
if (this.Stop != null)
{
this.Stop.SetProgressRange(0, lTotalSize);
}
if (Estimate != null)
{
Estimate.SetRange(lDoneSize, lTotalSize);
Estimate.StartEstimate();
}
for (int i = 0; i < lines.Count; i++)
{
// Application.DoEvents();
if (this.Stop != null && this.Stop.State != 0)
{
strError = "用户中断";
throw new InterruptException(strError);
// yield break; ?
}
string strLine = lines[i];
Debug.Assert(strLine.Length >= 8, "");
// string strRange = ranges[i];
// 2017/10/9
List <string> parts = StringUtil.ParseTwoPart(strLine, ":");
string strRange = parts[1];
strLine = parts[0];
string strLogFilename = strLine;
#if NO
string strLogFilename = "";
string strRange = "";
nRet = strLine.IndexOf(":");
if (nRet != -1)
{
strLogFilename = strLine.Substring(0, nRet).Trim();
strRange = strLine.Substring(nRet + 1).Trim();
}
else
{
strLogFilename = strLine.Trim();
strRange = "";
}
#endif
{
OperLogItemLoader loader = new OperLogItemLoader
{
Stop = this.Stop,
Channel = this.Channel,
// loader.owner = this.owner;
Estimate = this.Estimate,
Date = strLogFilename,
Level = this.Level,
ReplicationLevel = this.ReplicationLevel,
lServerFileSize = sizes[i],
Range = strRange,
AutoCache = this.AutoCache,
lProgressValue = lDoneSize,
lSize = lTotalSize,
Filter = this.Filter,
LogType = this.LogType,
ServerVersion = this.ServerVersion
};
if (this.Prompt != null)
{
loader.Prompt += new MessagePromptEventHandler(loader_Prompt);
}
try
{
foreach (OperLogItem item in loader)
{
yield return(item);
}
}
finally
{
if (this.Prompt != null)
{
loader.Prompt -= new MessagePromptEventHandler(loader_Prompt);
}
}
lDoneSize = loader.lProgressValue;
lTotalSize = loader.lSize;
}
}
}
