// parameters:
// nCount 本次希望获取的记录数。如果==-1，表示希望尽可能多地获取
// return:
// -1 error
// 0 file not found
// 1 succeed
// 2 超过范围，本次调用无效
public int GetOperLogs(
string strLibraryCodeList,
string strFileName,
long lIndex,
long lHint,
int nCount,
string strStyle,
string strFilter,
out OperLogInfo[] records,
out string strError)
{
records = null;
strError = "";
List <OperLogInfo> results = new List <OperLogInfo>();
if (StringUtil.IsInList("getfilenames", strStyle) == true)
{
int hit_count = 0;
int nStart = (int)lIndex;
List <ValueCount> dates = ListDates(nStart, // bug???
MAX_FILENAME_COUNT, out hit_count);
int nEnd = dates.Count;
if (nCount == -1)
{
nEnd = dates.Count;
}
else
{
nEnd = Math.Min(nStart + nCount, dates.Count);
}
// 一次不让超过最大数量
if (nEnd - nStart > MAX_FILENAME_COUNT)
{
nEnd = nStart + MAX_FILENAME_COUNT;
}
for (int i = nStart; i < nEnd; i++)
{
ValueCount item = dates[i];
OperLogInfo info = new OperLogInfo();
info.Index = i;
info.Xml = item.Value + ".log";
info.AttachmentLength = item.Count;
results.Add(info);
}
#if NO
records = new OperLogInfo[results.Count];
results.CopyTo(records);
#endif
records = results.ToArray();
return((int)lIndex + hit_count);
#if NO
DirectoryInfo di = new DirectoryInfo(this.m_strDirectory);
FileInfo[] fis = di.GetFiles("????????.log");
if (fis.Length == 0)
{
return(0); // 一个文件也没有
}
// 日期小者在前
Array.Sort(fis, new FileInfoCompare(true));
int nStart = (int)lIndex;
int nEnd = fis.Length;
if (nCount == -1)
{
nEnd = fis.Length;
}
else
{
nEnd = Math.Min(nStart + nCount, fis.Length);
}
// 一次不让超过最大数量
if (nEnd - nStart > MAX_FILENAME_COUNT)
{
nEnd = nStart + MAX_FILENAME_COUNT;
}
for (int i = nStart; i < nEnd; i++)
{
OperLogInfo info = new OperLogInfo();
info.Index = i;
info.Xml = fis[i].Name;
info.AttachmentLength = fis[i].Length;
results.Add(info);
}
records = new OperLogInfo[results.Count];
results.CopyTo(records);
return(1);
#endif
}
if (string.IsNullOrEmpty(strFileName) == true ||
strFileName.Length < 8)
{
strError = "strFileName 参数值不能为空，或者长度小于 8 字符";
return(-1);
}
string date = strFileName.Substring(0, 8);
IEnumerable <AccessLogItem> collection = Find(date, (int)lIndex);
if (collection == null)
{
return(0);
}
List <OperLogInfo> infos = new List <OperLogInfo>();
foreach (AccessLogItem item in collection)
{
OperLogInfo info = new OperLogInfo();
info.AttachmentLength = 0;
info.HintNext = 0;
info.Index = lIndex++;
info.Xml = GetXml(item);
infos.Add(info);
}
if (infos.Count == 0)
{
return(2);
}
records = infos.ToArray();
return(1);
}
public IEnumerator GetEnumerator()
{
string strError = "";
int nRet = 0;
long lRet = 0;
if (this.Date.Length != 8)
{
throw new ArgumentException("FileName 成员值的长度应该是 8 字符");
}
if ((this.LogType & LogType.AccessLog) != 0 &&
(this.LogType & LogType.OperLog) != 0)
{
throw new ArgumentException("OperLogItemLoader 的 LogType 只能使用一种类型");
}
if (this.Stop != null && this.Estimate != null)
{
this.Stop.SetMessage("正在装入日志文件 " + this.Date + " 中的记录。"
+ "剩余时间 " + ProgressEstimate.Format(Estimate.Estimate(lProgressValue)) + " 已经过时间 " + ProgressEstimate.Format(Estimate.delta_passed));
}
string strXml = "";
long lAttachmentTotalLength = 0;
byte[] attachment_data = null;
long lFileSize = 0;
if (lServerFileSize == -1)
{
long _lServerFileSize = 0;
string strStyle = "level-" + Level.ToString();
if ((this.LogType & LogType.AccessLog) != 0)
{
strStyle += ",accessLog";
}
// 获得服务器端日志文件尺寸
lRet = this.Channel.GetOperLog(
this.Stop,
this.Date,
-1, // lIndex,
-1, // lHint,
strStyle,
"", // strFilter
out strXml,
out _lServerFileSize,
0, // lAttachmentFragmentStart,
0, // nAttachmentFramengLength,
out attachment_data,
out lAttachmentTotalLength,
out strError);
// 2015/11/25
if (lRet == -1)
{
throw new ChannelException(this.Channel.ErrorCode, strError);
}
this.lServerFileSize = _lServerFileSize;
if (lRet == 0)
{
yield break;
}
// 2015/11/25
if (_lServerFileSize == -1)
{
yield break; // 此类型的日志尚未启用
}
}
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 = this.AutoCache;
if (bAutoCache == true)
{
string strFileName = this.Date;
if ((this.LogType & LogType.AccessLog) != 0)
{
strFileName = this.Date + ".a";
}
nRet = PrepareCacheFile(
this.CacheDir,
strFileName, // this.FileName,
lServerFileSize,
out bCacheFileExist,
out stream,
out strError);
if (nRet == -1)
{
throw new Exception(strError);
}
if (bCacheFileExist == false && stream != null)
{
bRemoveCacheFile = true;
}
}
try
{
if (bCacheFileExist == true)
{
lFileSize = stream.Length;
}
else
{
lFileSize = lServerFileSize;
}
// stop.SetProgressRange(0, lTotalSize);
if (String.IsNullOrEmpty(Range) == true)
{
Range = "0-" + (long.MaxValue - 1).ToString(); // "0-9999999999";
}
RangeList rl = new RangeList(Range);
for (int i = 0; i < rl.Count; i++)
{
RangeItem ri = (RangeItem)rl[i];
// 让 100- 这样的 range 可以使用
if (ri.lLength == -1)
{
ri.lLength = long.MaxValue - ri.lStart;
}
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 (this.Stop != null && this.Stop.State != 0)
{
strError = "用户中断";
throw new InterruptException(strError);
// yield break; ?
}
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)
{
throw new Exception(strError);
}
}
else
{
// 根据暗示找到
if (lHint == stream.Length)
{
break;
}
if (lHint > stream.Length)
{
strError = "lHint参数值不正确";
throw new Exception(strError);
}
if (stream.Position != lHint)
{
stream.Seek(lHint, SeekOrigin.Begin);
}
}
nRet = ReadCachedEnventLog(
stream,
out strXml,
out lAttachmentTotalLength,
out strError);
if (nRet == -1)
{
throw new Exception(strError);
}
lHintNext = stream.Position;
}
else
{
if (records == null || lIndex /*- ri.lStart*/ >= lStartRecords + records.Length)
{
int nCount = -1;
if (ri.lLength >= Int32.MaxValue)
{
nCount = -1; // 500; // -1;
}
else
{
nCount = (int)ri.lLength; // Math.Min(500, (int)ri.lLength);
}
string strStyle = "level-" + Level.ToString();
if ((this.LogType & LogType.AccessLog) != 0)
{
strStyle += ",accessLog";
}
// 2017/10/9
if (this.ReplicationLevel == true)
{
strStyle += ",supervisor"; // 注：当前账户中还应该包含 replicatoin 权限才能真正获得日志记录中的密码字段
}
if (string.IsNullOrEmpty(this.ServerVersion) == false &&
StringUtil.CompareVersion(this.ServerVersion, "3.17") >= 0)
{
strStyle += ",wait";
}
REDO:
// 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 = this.Channel.GetOperLogs(
this.Stop,
this.Date + ".log",
lIndex,
lHint,
nCount,
strStyle,
this.Filter, // strFilter
out records,
out strError);
if (lRet == -1)
{
#if NO
DialogResult result = MessageBox.Show(owner,
"获取日志信息 (" + this.FileName + " " + lIndex.ToString() + ") 的操作发生错误： " + strError + "\r\n\r\n是否重试操作?\r\n\r\n(是: 重试; 否: 跳过本次操作，继续后面的操作; 放弃: 停止全部操作)",
"OperLogItemLoader",
MessageBoxButtons.YesNoCancel,
MessageBoxIcon.Question,
MessageBoxDefaultButton.Button1);
if (result == DialogResult.Yes)
{
goto REDO;
}
if (result == DialogResult.Cancel)
{
throw new Exception(strError);
}
else
{
// TODO: 是否要在listview中装入一条表示出错的行?
lHintNext = -1;
continue;
}
#endif
if (this.Prompt != null)
{
MessagePromptEventArgs e = new MessagePromptEventArgs();
e.MessageText = "获取 " + this._logType.ToString() + " 日志信息 (" + this.Date + " " + lIndex.ToString() + ") 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;
}
else
{
lHintNext = -1;
continue;
}
}
else
{
throw new ChannelException(this.Channel.ErrorCode, strError);
}
}
if (lRet == 0)
{
yield break;
}
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;
throw new Exception(strError);
}
}
}
#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) // > 2017/12/4 修改为 >=
{
lSize = lProgressValue + lHintNext;
if (this.Stop != null)
{
this.Stop.SetProgressRange(0, lSize);
}
if (this.Estimate != null)
{
Estimate.SetRange(0, lSize);
}
}
this.Stop?.SetProgressValue(lProgressValue + lHintNext);
}
if (lIndex % 100 == 0)
{
if (this.Stop != null && this.Estimate != null)
{
Estimate.Text = "剩余时间 " + ProgressEstimate.Format(Estimate.Estimate(lProgressValue + lHintNext)) + " 已经过时间 " + ProgressEstimate.Format(Estimate.delta_passed);
this.Stop.SetMessage("正在装入日志文件 " + this.Date + " 中的记录 " + lIndex.ToString() + " 。"
+ Estimate.Text);
}
}
{
OperLogItem item = new OperLogItem
{
Xml = strXml,
Index = lIndex,
Date = this.Date.Substring(0, 8),
AttachmentLength = lAttachmentTotalLength
};
yield return(item);
}
}
}
// 创建本地缓存的日志文件的 metadata 文件
if (bCacheFileExist == false && stream != null)
{
string strFileName = this.Date;
if ((this.LogType & LogType.AccessLog) != 0)
{
strFileName = this.Date + ".a";
}
nRet = CreateCacheMetadataFile(
this.CacheDir,
strFileName, // this.FileName,
lServerFileSize,
out strError);
if (nRet == -1)
{
throw new Exception(strError);
}
}
bRemoveCacheFile = false; // 不删除
}
finally
{
if (stream != null)
{
stream.Close();
}
if (bRemoveCacheFile == true)
{
string strFileName = this.Date;
if ((this.LogType & LogType.AccessLog) != 0)
{
strFileName = this.Date + ".a";
}
string strError1 = "";
nRet = DeleteCacheFile(
this.CacheDir,
strFileName, // this.FileName,
out strError1);
if (nRet == -1)
{
// MessageBox.Show(owner, strError1);
if (this.Prompt != null)
{
MessagePromptEventArgs e = new MessagePromptEventArgs();
e.MessageText = strError1;
e.Actions = "ok";
this.Prompt(this, e);
}
}
}
}
lProgressValue += lFileSize;
}
