// 装入一个日志文件中的若干记录
// parameters:
// strStyle 如果包含 accessLog，表示这是需要获取只读日志
// strCacheDir 存储本地缓存文件的目录
// lServerFileSize 服务器端日志文件的尺寸。如果为-1，表示函数内会自动获取
// lSize 进度条所采用的最大尺寸。如果必要，可能会被本函数推动
// return:
// -2 此类型的日志尚未启用
// -1 error
// 0 正常结束
// 1 用户中断
static int ProcessFile(
IWin32Window owner,
Stop stop,
ProgressEstimate estimate,
LibraryChannel channel,
string strLogFileName,
int nLevel,
long lServerFileSize,
string strRange,
string strStyle,
string strCacheDir,
object param,
Delegate_doRecord procDoRecord,
ref long lProgressValue,
ref long lSize,
out string strError)
{
strError = "";
int nRet = 0;
long lRet = 0;
stop.SetMessage("正在装入日志文件 " + strLogFileName + " 中的记录。"
+ "剩余时间 " + ProgressEstimate.Format(estimate.Estimate(lProgressValue)) + " 已经过时间 " + ProgressEstimate.Format(estimate.delta_passed));
bool bAccessLog = StringUtil.IsInList("accessLog", strStyle);
string strXml = "";
long lAttachmentTotalLength = 0;
byte[] attachment_data = null;
long lFileSize = 0;
if (lServerFileSize == -1)
{
lServerFileSize = 0;
string strTempStyle = "level-" + nLevel.ToString();
if (bAccessLog)
strTempStyle += ",accessLog";
// 获得服务器端日志文件尺寸
lRet = channel.GetOperLog(
stop,
strLogFileName,
-1, // lIndex,
-1, // lHint,
strTempStyle,
"", // strFilter
out strXml,
out lServerFileSize,
0, // lAttachmentFragmentStart,
0, // nAttachmentFramengLength,
out attachment_data,
out lAttachmentTotalLength,
out strError);
// 2015/11/25
if (lRet == -1)
return -1;
// 2010/12/13
if (lRet == 0)
return 0;
if (lServerFileSize == -1)
{
strError = "日志尚未启用";
return -2;
}
}
Stream stream = null;
bool bCacheFileExist = false;
bool bRemoveCacheFile = false; // 是否要自动删除未全部完成的本地缓存文件
bool bAutoCache = StringUtil.IsInList("autocache", strStyle);
if (bAutoCache == true)
{
nRet = PrepareCacheFile(
strCacheDir,
bAccessLog ? strLogFileName + ".a" : strLogFileName,
lServerFileSize,
out bCacheFileExist,
out stream,
out strError);
if (nRet == -1)
return -1;
if (bCacheFileExist == false && stream != null)
bRemoveCacheFile = true;
}
try
{
if (bCacheFileExist == true)
lFileSize = stream.Length;
else
lFileSize = lServerFileSize;
// stop.SetProgressRange(0, lTotalSize);
if (String.IsNullOrEmpty(strRange) == true)
strRange = "0-9999999999";
RangeList rl = new RangeList(strRange);
for (int i = 0; i < rl.Count; i++)
{
RangeItem ri = (RangeItem)rl[i];
OperLogInfo[] records = null;
long lStartRecords = 0;
long lHint = -1;
long lHintNext = -1;
for (long lIndex = ri.lStart; lIndex < ri.lStart + ri.lLength; lIndex++)
{
Application.DoEvents();
if (stop != null)
{
if (stop.State != 0)
{
strError = "用户中断1";
goto ERROR1;
}
}
if (lIndex == ri.lStart)
lHint = -1;
else
lHint = lHintNext;
if (bCacheFileExist == true)
{
if (lHint == -1)
{
// return:
// -1 error
// 0 成功
// 1 到达文件末尾或者超出
nRet = LocationRecord(stream,
lIndex,
out strError);
if (nRet == -1)
return -1;
}
else
{
// 根据暗示找到
if (lHint == stream.Length)
break;
if (lHint > stream.Length)
{
strError = "lHint参数值不正确";
return -1;
}
if (stream.Position != lHint)
stream.Seek(lHint, SeekOrigin.Begin);
}
nRet = ReadCachedEnventLog(
stream,
out strXml,
out lAttachmentTotalLength,
out strError);
if (nRet == -1)
return -1;
lHintNext = stream.Position;
}
else
{
if (records == null || lIndex - ri.lStart >= lStartRecords + records.Length)
{
int nCount = -1;
if (ri.lLength >= Int32.MaxValue)
nCount = -1;
else
nCount = (int)ri.lLength;
string strTempStyle = "level-" + nLevel.ToString();
if (bAccessLog)
strTempStyle += ",accessLog";
// 获得日志
// return:
// -1 error
// 0 file not found
// 1 succeed
// 2 超过范围，本次调用无效
lRet = channel.GetOperLogs(
stop,
strLogFileName,
lIndex,
lHint,
nCount,
strTempStyle,
"", // strFilter
out records,
out strError);
if (lRet == -1)
{
DialogResult result = MessageBox.Show(owner,
strError + "\r\n\r\n是否继续处理?",
"OperLogForm",
MessageBoxButtons.YesNo,
MessageBoxIcon.Question,
MessageBoxDefaultButton.Button1);
if (result == DialogResult.No)
goto ERROR1;
else
{
// TODO: 是否要在listview中装入一条表示出错的行?
lHintNext = -1;
continue;
}
}
if (lRet == 0)
return 0;
if (lRet == 2)
break;
// records数组表示的起点位置
lStartRecords = lIndex - ri.lStart;
}
OperLogInfo info = records[lIndex - lStartRecords];
strXml = info.Xml;
lHintNext = info.HintNext;
lAttachmentTotalLength = info.AttachmentLength;
// 写入本地缓存的日志文件
if (stream != null)
{
try
{
WriteCachedEnventLog(
stream,
strXml,
lAttachmentTotalLength);
}
catch (Exception ex)
{
strError = "写入本地缓存文件的时候出错: " + ex.Message;
return -1;
}
}
}
#if NO
// 2011/12/30
// 日志记录可能动态地增加了，超过了原先为ProgressBar设置的范围
if (lFizeTotalSize < (int)lHintNext)
{
lFizeTotalSize = lHintNext;
stop.SetProgressRange(0, lFizeTotalSize);
}
#endif
if (lHintNext >= 0)
{
// 校正
if (lProgressValue + lHintNext > lSize)
{
lSize = lProgressValue + lHintNext;
stop.SetProgressRange(0, lSize);
estimate.SetRange(0, lSize);
}
stop.SetProgressValue(lProgressValue + lHintNext);
}
if (lIndex % 100 == 0)
{
stop.SetMessage("正在装入日志文件 " + strLogFileName + " 中的记录 " + lIndex.ToString() + " 。"
+ "剩余时间 " + ProgressEstimate.Format(estimate.Estimate(lProgressValue + lHintNext)) + " 已经过时间 " + ProgressEstimate.Format(estimate.delta_passed));
}
//
if (procDoRecord != null)
{
nRet = procDoRecord(strLogFileName,
strXml,
bCacheFileExist,
lHint,
lIndex,
lAttachmentTotalLength,
param,
out strError);
if (nRet == -1)
{
DialogResult result = MessageBox.Show(owner,
strLogFileName + " : " + lIndex.ToString() + "\r\n" + strError + "\r\n\r\n是否继续处理?",
"OperLogForm",
MessageBoxButtons.YesNo,
MessageBoxIcon.Question,
MessageBoxDefaultButton.Button1);
if (result == DialogResult.No)
return -1;
}
if (nRet == 1)
return 1;
}
}
}
// 创建本地缓存的日志文件的metadata文件
if (bCacheFileExist == false && stream != null)
{
nRet = CreateCacheMetadataFile(
strCacheDir,
bAccessLog ? strLogFileName + ".a" : strLogFileName,
lServerFileSize,
out strError);
if (nRet == -1)
goto ERROR1;
}
bRemoveCacheFile = false; // 不删除
}
finally
{
if (stream != null)
stream.Close();
if (bRemoveCacheFile == true)
{
string strError1 = "";
nRet = DeleteCacheFile(
strCacheDir,
bAccessLog ? strLogFileName + ".a" : strLogFileName,
out strError1);
if (nRet == -1)
MessageBox.Show(owner, strError1);
}
}
lProgressValue += lFileSize;
return 0;
ERROR1:
return -1;
}
