public static bool PatronDataExists()
{
try
{
using (BiblioCacheContext context = new BiblioCacheContext())
{
context.Database.EnsureCreated();
return(context.Patrons.Any());
}
}
catch (Exception ex)
{
WpfClientInfo.WriteErrorLog($"PatronDataExists() 出现异常: {ExceptionUtil.GetDebugText(ex)}");
return(false);
}
}
// 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);
}
}
// 第一阶段：获得全部读者库记录，进入本地数据库
// result.Value
// -1 出错
// >=0 实际获得的读者记录条数
public static async Task <ReplicationPlan> DownloadAllPatronRecordAsync(CancellationToken token)
{
LibraryChannel channel = App.CurrentApp.GetChannel();
var old_timeout = channel.Timeout;
channel.Timeout = TimeSpan.FromMinutes(5); // 设置 5 分钟。因为读者记录检索需要一定时间
try
{
ReplicationPlan plan = GetReplicationPlan(channel);
if (plan.Value == -1)
{
return(plan);
}
int nRedoCount = 0;
REDO:
if (token.IsCancellationRequested)
{
return new ReplicationPlan
{
Value = -1,
ErrorInfo = "用户中断"
}
}
;
// 检索全部读者库记录
long lRet = channel.SearchReader(null, // stop,
"<all>",
"",
-1,
"__id",
"left",
"zh",
null, // strResultSetName
"", // strOutputStyle
out string strError);
if (lRet == -1)
{
// 一次重试机会
if (lRet == -1 &&
(channel.ErrorCode == ErrorCode.RequestCanceled || channel.ErrorCode == ErrorCode.RequestError) &&
nRedoCount < 2)
{
nRedoCount++;
goto REDO;
}
return(new ReplicationPlan
{
Value = -1,
ErrorInfo = strError,
ErrorCode = channel.ErrorCode.ToString()
});
}
long hitcount = lRet;
// 把超时时间改短一点
channel.Timeout = TimeSpan.FromSeconds(20);
DateTime search_time = DateTime.Now;
// 获取和存储记录
ResultSetLoader loader = new ResultSetLoader(channel,
null,
null,
$"id,xml,timestamp",
"zh");
using (BiblioCacheContext context = new BiblioCacheContext())
{
context.Database.EnsureCreated();
// 删除 Patrons 里面的已有记录
context.Patrons.RemoveRange(context.Patrons.ToList());
await context.SaveChangesAsync(token);
// loader.Prompt += this.Loader_Prompt;
if (hitcount > 0)
{
int i = 0;
foreach (DigitalPlatform.LibraryClient.localhost.Record record in loader)
{
if (token.IsCancellationRequested)
{
return new ReplicationPlan
{
Value = -1,
ErrorInfo = "用户中断"
}
}
;
PatronItem item = new PatronItem();
var result = Set(item, record, search_time);
if (result.Value == -1)
{
// TODO: 是否汇总报错信息？
continue;
}
context.Patrons.Add(item);
if ((i % 10) == 0)
{
await context.SaveChangesAsync(token);
}
i++;
}
await context.SaveChangesAsync(token);
}
}
return(new ReplicationPlan
{
Value = (int)hitcount,
StartDate = plan.StartDate
});
}
catch (Exception ex)
{
return(new ReplicationPlan
{
Value = -1,
ErrorInfo = $"DownloadAllPatronRecord() 出现异常：{ex.Message}"
});
}
finally
{
channel.Timeout = old_timeout;
App.CurrentApp.ReturnChannel(channel);
}
}
// 第一阶段：获得全部读者库记录，进入本地数据库
// result.Value
// -1 出错
// >=0 实际获得的读者记录条数
public static async Task <ReplicationPlan> DownloadAllPatronRecordAsync(
Delegate_writeLog writeLog,
CancellationToken token)
{
_inDownloadingPatron++;
// 2020/9/26
if (_inDownloadingPatron > 1)
{
_inDownloadingPatron--;
return(new ReplicationPlan
{
Value = -1,
ErrorCode = "running",
ErrorInfo = "前一次的“下载全部读者记录到本地缓存”过程还在进行中，本次触发被放弃"
});
}
writeLog?.Invoke($"开始下载全部读者记录到本地缓存");
LibraryChannel channel = App.CurrentApp.GetChannel();
var old_timeout = channel.Timeout;
channel.Timeout = TimeSpan.FromMinutes(5); // 设置 5 分钟。因为读者记录检索需要一定时间
try
{
ReplicationPlan plan = GetReplicationPlan(channel);
writeLog?.Invoke($"GetReplicationPlan() return {plan.ToString()}");
if (plan.Value == -1)
{
return(plan);
}
int nRedoCount = 0;
REDO:
if (token.IsCancellationRequested)
{
return new ReplicationPlan
{
Value = -1,
ErrorInfo = "用户中断"
}
}
;
// 检索全部读者库记录
long lRet = channel.SearchReader(null, // stop,
"<all>",
"",
-1,
"__id",
"left",
"zh",
null, // strResultSetName
"", // strOutputStyle
out string strError);
if (lRet == -1)
{
writeLog?.Invoke($"SearchReader() 出错, strError={strError}, channel.ErrorCode={channel.ErrorCode}");
// 一次重试机会
if (lRet == -1 &&
(channel.ErrorCode == ErrorCode.RequestCanceled || channel.ErrorCode == ErrorCode.RequestError) &&
nRedoCount < 2)
{
nRedoCount++;
goto REDO;
}
return(new ReplicationPlan
{
Value = -1,
ErrorInfo = strError,
ErrorCode = channel.ErrorCode.ToString()
});
}
long hitcount = lRet;
writeLog?.Invoke($"共检索命中读者记录 {hitcount} 条");
// 把超时时间改短一点
channel.Timeout = TimeSpan.FromSeconds(20);
DateTime search_time = DateTime.Now;
Hashtable pii_table = new Hashtable();
int skip_count = 0;
int error_count = 0;
// 获取和存储记录
ResultSetLoader loader = new ResultSetLoader(channel,
null,
null,
$"id,xml,timestamp",
"zh");
using (BiblioCacheContext context = new BiblioCacheContext())
{
context.Database.EnsureCreated();
// 删除 Patrons 里面的已有记录
context.Patrons.RemoveRange(context.Patrons.ToList());
await context.SaveChangesAsync(token);
// loader.Prompt += this.Loader_Prompt;
if (hitcount > 0)
{
int i = 0;
foreach (DigitalPlatform.LibraryClient.localhost.Record record in loader)
{
if (token.IsCancellationRequested)
{
return new ReplicationPlan
{
Value = -1,
ErrorInfo = "用户中断"
}
}
;
PatronItem item = new PatronItem();
// result.Value:
// -1 出错
// 0 需要跳过这条读者记录
// 1 成功
var result = Set(item, record, search_time);
if (result.Value == -1 || result.Value == 0)
{
// TODO: 是否汇总报错信息？
if (result.Value == -1)
{
writeLog?.Invoke($"Set() ({item.RecPath}) 出错: {result.ErrorInfo}");
error_count++;
}
if (result.Value == 0)
{
skip_count++;
}
continue;
}
//
if (pii_table.ContainsKey(result.PII))
{
string recpath = (string)pii_table[result.PII];
writeLog?.Invoke($"发现读者记录 {item.RecPath} 的 PII '{result.PII}' 和 {recpath} 的 PII 重复了。跳过它");
continue;
}
pii_table[result.PII] = item.RecPath;
// TODO: PII 应该是包含 OI 的严格形态
context.Patrons.Add(item);
if ((i % 10) == 0)
{
await context.SaveChangesAsync(token);
}
i++;
}
await context.SaveChangesAsync(token);
}
}
writeLog?.Invoke($"plan.StartDate='{plan.StartDate}'。skip_count={skip_count}, error_count={error_count}。返回");
return(new ReplicationPlan
{
Value = (int)hitcount,
StartDate = plan.StartDate
});
}
catch (Exception ex)
{
// 2020/9/26
writeLog?.Invoke($"DownloadAllPatronRecord() 出现异常：{ExceptionUtil.GetDebugText(ex)}");
return(new ReplicationPlan
{
Value = -1,
ErrorInfo = $"DownloadAllPatronRecord() 出现异常：{ex.Message}"
});
}
finally
{
channel.Timeout = old_timeout;
App.CurrentApp.ReturnChannel(channel);
writeLog?.Invoke($"结束下载全部读者记录到本地缓存");
_inDownloadingPatron--;
}
}