// 2020/9/17
public static void BeginUpdate(
TimeSpan firstDelay,
TimeSpan idleLength,
CancellationToken token,
delegate_showText func_showText)
{
if (ApplicationDeployment.IsNetworkDeployed == false)
{
return;
}
Task.Factory.StartNew(async() =>
{
try
{
// 第一次延迟
await Task.Delay(firstDelay, token);
while (token.IsCancellationRequested == false)
{
// -1 出错
// 0 没有发现更新
// 1 已经更新，重启可使用新版本
NormalResult result = ClientInfo.InstallUpdateSync();
WriteInfoLog($"后台 ClickOnce 自动更新返回: {result.ToString()}");
if (result.Value == -1)
{
func_showText?.Invoke("自动更新出错: " + result.ErrorInfo, 2);
}
else if (result.Value == 1)
{
func_showText?.Invoke(result.ErrorInfo, 1);
return; // 只要更新了一次就返回
}
else if (string.IsNullOrEmpty(result.ErrorInfo) == false)
{
func_showText?.Invoke(result.ErrorInfo, 0);
}
// 以后的每次延迟
await Task.Delay(idleLength, token);
}
}
catch (OperationCanceledException)
{
}
catch (Exception ex)
{
WriteErrorLog($"后台 ClickOnce 自动更新出现异常: {ExceptionUtil.GetDebugText(ex)}");
}
},
token,
TaskCreationOptions.LongRunning,
TaskScheduler.Default);
}
// parameters:
// uid_table 返回 UID --> PII 对照表
public static NormalResult DownloadUidTable(
List <string> item_dbnames,
Hashtable uid_table,
delegate_showText func_showProgress,
// Delegate_writeLog writeLog,
CancellationToken token)
{
WpfClientInfo.WriteInfoLog($"开始下载全部册记录到本地缓存");
LibraryChannel channel = App.CurrentApp.GetChannel();
var old_timeout = channel.Timeout;
channel.Timeout = TimeSpan.FromMinutes(5); // 设置 5 分钟。因为册记录检索需要一定时间
try
{
if (item_dbnames == null)
{
long lRet = channel.GetSystemParameter(
null,
"item",
"dbnames",
out string strValue,
out string strError);
if (lRet == -1)
{
return new NormalResult
{
Value = -1,
ErrorInfo = strError,
ErrorCode = channel.ErrorCode.ToString()
}
}
;
item_dbnames = StringUtil.SplitList(strValue);
StringUtil.RemoveBlank(ref item_dbnames);
}
foreach (string dbName in item_dbnames)
{
func_showProgress?.Invoke($"正在从 {dbName} 获取信息 ...");
int nRedoCount = 0;
REDO:
if (token.IsCancellationRequested)
{
return new NormalResult
{
Value = -1,
ErrorInfo = "用户中断"
}
}
;
// 检索全部读者库记录
long lRet = channel.SearchItem(null,
dbName, // "<all>",
"",
-1,
"__id",
"left",
"zh",
null, // strResultSetName
"", // strSearchStyle
"", // strOutputStyle
out string strError);
if (lRet == -1)
{
WpfClientInfo.WriteErrorLog($"SearchItem() 出错, strError={strError}, channel.ErrorCode={channel.ErrorCode}");
// 一次重试机会
if (lRet == -1 &&
(channel.ErrorCode == ErrorCode.RequestCanceled || channel.ErrorCode == ErrorCode.RequestError) &&
nRedoCount < 2)
{
nRedoCount++;
goto REDO;
}
return(new NormalResult
{
Value = -1,
ErrorInfo = strError,
ErrorCode = channel.ErrorCode.ToString()
});
}
long hitcount = lRet;
WpfClientInfo.WriteInfoLog($"{dbName} 共检索命中册记录 {hitcount} 条");
// 把超时时间改短一点
channel.Timeout = TimeSpan.FromSeconds(20);
DateTime search_time = DateTime.Now;
int skip_count = 0;
int error_count = 0;
if (hitcount > 0)
{
string strStyle = "id,cols,format:@coldef:*/barcode|*/location|*/uid";
// 获取和存储记录
ResultSetLoader loader = new ResultSetLoader(channel,
null,
null,
strStyle, // $"id,xml,timestamp",
"zh");
// loader.Prompt += this.Loader_Prompt;
int i = 0;
foreach (DigitalPlatform.LibraryClient.localhost.Record record in loader)
{
if (token.IsCancellationRequested)
{
return new NormalResult
{
Value = -1,
ErrorInfo = "用户中断"
}
}
;
if (record.Cols != null)
{
string barcode = "";
if (record.Cols.Length > 0)
{
barcode = record.Cols[0];
}
string location = "";
if (record.Cols.Length > 1)
{
location = record.Cols[1];
}
string uid = "";
if (record.Cols.Length > 2)
{
uid = record.Cols[2];
}
if (string.IsNullOrEmpty(barcode) == false &&
string.IsNullOrEmpty(uid) == false)
{
uid_table[uid] = barcode;
}
}
i++;
}
}
WpfClientInfo.WriteInfoLog($"dbName='{dbName}'。skip_count={skip_count}, error_count={error_count}");
}
return(new NormalResult
{
Value = uid_table.Count,
});
}
catch (Exception ex)
{
WpfClientInfo.WriteErrorLog($"DownloadItemRecordAsync() 出现异常：{ExceptionUtil.GetDebugText(ex)}");
return(new NormalResult
{
Value = -1,
ErrorInfo = $"DownloadItemRecordAsync() 出现异常：{ex.Message}"
});
}
finally
{
channel.Timeout = old_timeout;
App.CurrentApp.ReturnChannel(channel);
WpfClientInfo.WriteInfoLog($"结束下载全部读者记录到本地缓存");
}
}