// 同步
// 注：中途遇到异常(例如 Loader 抛出异常)，可能会丢失 INSERT_BATCH 条以内的日志记录写入 operlog 表
// parameters:
// strLastDate 处理中断或者结束时返回最后处理过的日期
// last_index 处理或中断返回时最后处理过的位置。以后继续处理的时候可以从这个偏移开始
// return:
// -1 出错
// 0 中断
// 1 完成
public ReplicationResult DoReplication(
LibraryChannel channel,
string strStartDate,
string strEndDate,
LogType logType,
CancellationToken token)
{
string strLastDate = "";
long last_index = -1; // -1 表示尚未处理
// bool bUserChanged = false;
// strStartDate 里面可能会包含 ":1-100" 这样的附加成分
StringUtil.ParseTwoPart(strStartDate,
":",
out string strLeft,
out string strRight);
strStartDate = strLeft;
if (string.IsNullOrEmpty(strStartDate) == true)
{
return(new ReplicationResult
{
Value = -1,
ErrorInfo = "DoReplication() 出错: strStartDate 参数值不应为空"
});
}
try
{
List <string> dates = null;
int nRet = OperLogLoader.MakeLogFileNames(strStartDate,
strEndDate,
true, // 是否包含扩展名 ".log"
out dates,
out string strWarning,
out string strError);
if (nRet == -1)
{
return(new ReplicationResult
{
Value = -1,
ErrorInfo = strError
});
}
if (dates.Count > 0 && string.IsNullOrEmpty(strRight) == false)
{
dates[0] = dates[0] + ":" + strRight;
}
channel.Timeout = new TimeSpan(0, 1, 0); // 一分钟
// using (SQLiteConnection connection = new SQLiteConnection(this._connectionString))
{
ProgressEstimate estimate = new ProgressEstimate();
OperLogLoader loader = new OperLogLoader
{
Channel = channel,
Stop = null, // this.Progress;
// loader.owner = this;
Estimate = estimate,
Dates = dates,
Level = 2, // Program.MainForm.OperLogLevel;
AutoCache = false,
CacheDir = "",
LogType = logType,
Filter = "setReaderInfo"
};
loader.Prompt += Loader_Prompt;
try
{
// int nRecCount = 0;
string strLastItemDate = "";
long lLastItemIndex = -1;
foreach (OperLogItem item in loader)
{
token.ThrowIfCancellationRequested();
//if (stop != null)
// stop.SetMessage("正在同步 " + item.Date + " " + item.Index.ToString() + " " + estimate.Text + "...");
if (string.IsNullOrEmpty(item.Xml) == true)
{
goto CONTINUE;
}
XmlDocument dom = new XmlDocument();
try
{
dom.LoadXml(item.Xml);
}
catch (Exception ex)
{
if (this.HasLoaderPrompt())
{
strError = logType.ToString() + "日志记录 " + item.Date + " " + item.Index.ToString() + " XML 装入 DOM 的时候发生错误: " + ex.Message;
MessagePromptEventArgs e = new MessagePromptEventArgs
{
MessageText = strError + "\r\n\r\n是否跳过此条继续处理?\r\n\r\n(确定: 跳过; 取消: 停止全部操作)",
IncludeOperText = true,
// + "\r\n\r\n是否跳过此条继续处理?",
Actions = "yes,cancel"
};
Loader_Prompt(channel, e);
if (e.ResultAction == "cancel")
{
throw new ChannelException(channel.ErrorCode, strError);
}
else if (e.ResultAction == "yes")
{
continue;
}
else
{
// no 也是抛出异常。因为继续下一批代价太大
throw new ChannelException(channel.ErrorCode, strError);
}
}
else
{
throw new ChannelException(channel.ErrorCode, strError);
}
}
string strOperation = DomUtil.GetElementText(dom.DocumentElement, "operation");
if (strOperation == "setReaderInfo")
{
nRet = TraceSetReaderInfo(
dom,
out strError);
}
else
{
continue;
}
if (nRet == -1)
{
strError = "同步 " + item.Date + " " + item.Index.ToString() + " 时出错: " + strError;
if (this.HasLoaderPrompt())
{
MessagePromptEventArgs e = new MessagePromptEventArgs
{
MessageText = strError + "\r\n\r\n是否跳过此条继续处理?\r\n\r\n(确定: 跳过; 取消: 停止全部操作)",
IncludeOperText = true,
// + "\r\n\r\n是否跳过此条继续处理?",
Actions = "yes,cancel"
};
Loader_Prompt(channel, e);
if (e.ResultAction == "cancel")
{
throw new Exception(strError);
}
else if (e.ResultAction == "yes")
{
continue;
}
else
{
// no 也是抛出异常。因为继续下一批代价太大
throw new Exception(strError);
}
}
else
{
throw new ChannelException(channel.ErrorCode, strError);
}
}
// lProcessCount++;
CONTINUE:
// 便于循环外获得这些值
strLastItemDate = item.Date;
lLastItemIndex = item.Index + 1;
// index = 0; // 第一个日志文件后面的，都从头开始了
}
// 记忆
strLastDate = strLastItemDate;
last_index = lLastItemIndex;
}
finally
{
loader.Prompt -= Loader_Prompt;
}
}
return(new ReplicationResult
{
Value = last_index == -1 ? 0 : 1,
LastDate = strLastDate,
LastIndex = last_index
});
}
catch (ChannelException ex)
{
return(new ReplicationResult {
Value = -1, ErrorInfo = ex.Message
});
}
catch (Exception ex)
{
string strError = "ReportForm DoReplication() exception: " + ExceptionUtil.GetDebugText(ex);
return(new ReplicationResult {
Value = -1, ErrorInfo = strError
});
}
}
// 第二阶段：根据操作日志进行同步
// 注：中途遇到异常(例如 Loader 抛出异常)，可能会丢失 INSERT_BATCH 条以内的日志记录写入 operlog 表
// parameters:
// strLastDate 处理中断或者结束时返回最后处理过的日期
// last_index 处理或中断返回时最后处理过的位置。以后继续处理的时候可以从这个偏移开始
// return:
// -1 出错
// 0 中断
// 1 完成
public static async Task <ReplicationResult> DoReplication(
string strStartDate,
string strEndDate,
LogType logType,
// string serverVersion,
CancellationToken token)
{
string strLastDate = "";
long last_index = -1; // -1 表示尚未处理
// bool bUserChanged = false;
ProcessInfo info = new ProcessInfo();
// strStartDate 里面可能会包含 ":1-100" 这样的附加成分
StringUtil.ParseTwoPart(strStartDate,
":",
out string strLeft,
out string strRight);
strStartDate = strLeft;
if (string.IsNullOrEmpty(strStartDate) == true)
{
return(new ReplicationResult
{
Value = -1,
ErrorInfo = "DoReplication() 出错: strStartDate 参数值不应为空"
});
}
LibraryChannel channel = App.CurrentApp.GetChannel();
var old_timeout = channel.Timeout;
channel.Timeout = TimeSpan.FromSeconds(10);
try
{
int nRet = OperLogLoader.MakeLogFileNames(strStartDate,
strEndDate,
true, // 是否包含扩展名 ".log"
out List <string> dates,
out string strWarning,
out string strError);
if (nRet == -1)
{
return(new ReplicationResult
{
Value = -1,
ErrorInfo = strError
});
}
if (dates.Count > 0 && string.IsNullOrEmpty(strRight) == false)
{
dates[0] = dates[0] + ":" + strRight;
}
using (BiblioCacheContext context = new BiblioCacheContext())
{
context.Database.EnsureCreated();
ProgressEstimate estimate = new ProgressEstimate();
OperLogLoader loader = new OperLogLoader
{
Channel = channel,
Stop = null, // this.Progress;
// loader.owner = this;
Estimate = estimate,
Dates = dates,
Level = 0,
AutoCache = false,
CacheDir = "",
LogType = logType,
Filter = "setReaderInfo,borrow,return,setSystemParameter,writeRes", // 借书还书时候都会修改读者记录
// ServerVersion = serverVersion
};
//TimeSpan old_timeout = channel.Timeout;
//channel.Timeout = new TimeSpan(0, 2, 0); // 二分钟
// loader.Prompt += Loader_Prompt;
try
{
// int nRecCount = 0;
string strLastItemDate = "";
long lLastItemIndex = -1;
// TODO: 计算遍历耗费的时间。如果太短了，要想办法让调主知道这一点，放缓重新调用的节奏，以避免 CPU 和网络资源太高
foreach (OperLogItem item in loader)
{
token.ThrowIfCancellationRequested();
//if (stop != null)
// stop.SetMessage("正在同步 " + item.Date + " " + item.Index.ToString() + " " + estimate.Text + "...");
if (string.IsNullOrEmpty(item.Xml) == true)
{
goto CONTINUE;
}
XmlDocument dom = new XmlDocument();
try
{
dom.LoadXml(item.Xml);
}
catch (Exception ex)
{
/*
* if (this.HasLoaderPrompt())
* {
* strError = logType.ToString() + "日志记录 " + item.Date + " " + item.Index.ToString() + " XML 装入 DOM 的时候发生错误: " + ex.Message;
* MessagePromptEventArgs e = new MessagePromptEventArgs
* {
* MessageText = strError + "\r\n\r\n是否跳过此条继续处理?\r\n\r\n(确定: 跳过; 取消: 停止全部操作)",
* IncludeOperText = true,
* // + "\r\n\r\n是否跳过此条继续处理?",
* Actions = "yes,cancel"
* };
* Loader_Prompt(channel, e);
* if (e.ResultAction == "cancel")
* throw new ChannelException(channel.ErrorCode, strError);
* else if (e.ResultAction == "yes")
* continue;
* else
* {
* // no 也是抛出异常。因为继续下一批代价太大
* throw new ChannelException(channel.ErrorCode, strError);
* }
* }
* else
*/
throw new ChannelException(channel.ErrorCode, strError);
}
string strOperation = DomUtil.GetElementText(dom.DocumentElement, "operation");
if (strOperation == "setReaderInfo")
{
var trace_result = TraceSetReaderInfo(
dom,
info);
if (trace_result.Value == -1)
{
WpfClientInfo.WriteErrorLog("同步 " + item.Date + " " + item.Index.ToString() + " 时出错: " + trace_result.ErrorInfo);
}
}
else if (strOperation == "borrow" || strOperation == "return")
{
var trace_result = await TraceBorrowOrReturn(
dom,
info);
if (trace_result.Value == -1)
{
WpfClientInfo.WriteErrorLog("同步 " + item.Date + " " + item.Index.ToString() + " 时出错: " + trace_result.ErrorInfo);
}
}
else if (strOperation == "setSystemParameter")
{
var trace_result = TraceSetSystemParameter(
dom,
info);
if (trace_result.Value == -1)
{
WpfClientInfo.WriteErrorLog("同步 " + item.Date + " " + item.Index.ToString() + " 时出错: " + trace_result.ErrorInfo);
}
}
else if (strOperation == "writeRes")
{
var trace_result = TraceWriteRes(
dom,
info);
if (trace_result.Value == -1)
{
WpfClientInfo.WriteErrorLog("同步 " + item.Date + " " + item.Index.ToString() + " 时出错: " + trace_result.ErrorInfo);
}
}
else
{
continue;
}
#if NO
if (nRet == -1)
{
strError = "同步 " + item.Date + " " + item.Index.ToString() + " 时出错: " + strError;
/*
* if (this.HasLoaderPrompt())
* {
* MessagePromptEventArgs e = new MessagePromptEventArgs
* {
* MessageText = strError + "\r\n\r\n是否跳过此条继续处理?\r\n\r\n(确定: 跳过; 取消: 停止全部操作)",
* IncludeOperText = true,
* // + "\r\n\r\n是否跳过此条继续处理?",
* Actions = "yes,cancel"
* };
* Loader_Prompt(channel, e);
* if (e.ResultAction == "cancel")
* throw new Exception(strError);
* else if (e.ResultAction == "yes")
* continue;
* else
* {
* // no 也是抛出异常。因为继续下一批代价太大
* throw new Exception(strError);
* }
* }
* else
*/
throw new ChannelException(channel.ErrorCode, strError);
}
#endif
// lProcessCount++;
CONTINUE:
// 便于循环外获得这些值
strLastItemDate = item.Date;
lLastItemIndex = item.Index + 1;
// index = 0; // 第一个日志文件后面的，都从头开始了
}
// 记忆
strLastDate = strLastItemDate;
last_index = lLastItemIndex;
}
finally
{
// loader.Prompt -= Loader_Prompt;
channel.Timeout = old_timeout;
}
}
return(new ReplicationResult
{
Value = last_index == -1 ? 0 : 1,
LastDate = strLastDate,
LastIndex = last_index,
ProcessInfo = info
});
}
catch (ChannelException ex)
{
return(new ReplicationResult
{
Value = -1,
ErrorInfo = ex.Message,
ProcessInfo = info
});
}
catch (InterruptException ex)
{
// 2019/7/4
return(new ReplicationResult
{
Value = -1,
ErrorInfo = ex.Message,
ProcessInfo = info
});
}
catch (Exception ex)
{
string strError = "DoReplication() exception: " + ExceptionUtil.GetDebugText(ex);
return(new ReplicationResult
{
Value = -1,
ErrorInfo = strError,
ProcessInfo = info
});
}
finally
{
channel.Timeout = old_timeout;
App.CurrentApp.ReturnChannel(channel);
}
}
