【发布时间】:2014-04-17 03:42:53
【问题描述】:
我收到了 6 个不同域/主机的唯一 URL,解析它们返回的 XML,并插入到表中。我的工作正常,除了它同步地执行每个服务器(一次一个)。我需要它同时访问所有六台服务器。
我将 WebClient 调用更改为使用 Async 方法,然后添加了一个 while 语句来检查是否所有 WebClient 调用都已返回,但是 SSIS 包似乎在 while 语句完成后被取消,无论我是否调用了 SetEndOfRowSet 或不是。 SSIS 日志中不显示任何错误(即使选择了所有日志选项)。它在输出窗口中显示“已取消”,当它发生时会弹出一个简短的控制台窗口,但我无法捕捉它。
如果我在 SSIS 包中没有 while 语句,则包会继续经过我的脚本转换,并且不会从中输出任何行。 SynchronousInputID 上的脚本转换设置为无。
这是 SSIS C# 脚本转换代码:
/* Microsoft SQL Server Integration Services Script Component
* Write scripts using Microsoft Visual C# 2008.
* ScriptMain is the entry point class of the script.*/
using System;
using System.Data;
using Microsoft.SqlServer.Dts.Pipeline.Wrapper;
using Microsoft.SqlServer.Dts.Runtime.Wrapper;
using System.Net;
using System.Diagnostics;
using System.Xml;
[Microsoft.SqlServer.Dts.Pipeline.SSISScriptComponentEntryPointAttribute]
public class ScriptMain : UserComponent
{
private int CountComplete = 0;
public override void PreExecute()
{
base.PreExecute();
}
public override void PostExecute()
{
base.PostExecute();
}
public override void Input0_ProcessInput(Input0Buffer Buffer)
{
while(Buffer.NextRow())
{
Input0_ProcessInputRow(Buffer);
}
if (Buffer.EndOfRowset())
{
while (CountComplete < Variables.intRows)
{
System.Threading.Thread.Sleep(500);
}
Output0Buffer.SetEndOfRowset();
}
}
public override void Input0_ProcessInputRow(Input0Buffer Row)
{
string DNS_NA = Row.DNSNA;
long SERVER = Convert.ToInt64(Row.SERSYSNR);
// Ignore server/certificate mismatch...
ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, sslPolicyErrors) => true;
// Declare variable that will hold the xml document received by the API
string xmlDoc = String.Empty;
// Get the URI from the variable
string url = @"https://" + DNS_NA + Variables.strURLSuffix;
// Time the request...
Stopwatch timer = Stopwatch.StartNew();
//Create a Web Client
WebClient client = new WebClient();
client.DownloadStringCompleted += (sender, e) =>
{
timer.Stop();
processRow(e.Result, SERVER, Convert.ToInt32(timer.ElapsedMilliseconds), Convert.ToInt32(Row.UPTIMQY), Output0Buffer);
CountComplete += 1;
};
Uri uri = new Uri(url);
client.DownloadStringAsync(uri);
}
private void processRow(string xmlDoc, long SERVER, int FRAPI_TIME, int PRE_UPTIME, Output0Buffer buffer)
{
try
{
XmlDocument xDoc = new XmlDocument();
xDoc.LoadXml(xmlDoc);
bool NORESPONSE = false; // If we made it this far, we got a response, right?
short CPU = Convert.ToInt16(xDoc.SelectSingleNode("//server").ChildNodes[1].InnerText);
int TOT_MEM = Convert.ToInt32(xDoc.SelectSingleNode("//server").ChildNodes[2].InnerText) / (1024 * 1024);
int USE_MEM = Convert.ToInt32(xDoc.SelectSingleNode("//server").ChildNodes[3].InnerText) / (1024 * 1024);
int UPTIME = Convert.ToInt32(xDoc.SelectSingleNode("//server").ChildNodes[4].InnerText) / 1000 / 60;
short REQUESTS = Convert.ToInt16(xDoc.SelectSingleNode("//server").ChildNodes[5].InnerText);
bool RESET = (UPTIME < PRE_UPTIME) ? true : false;
foreach (XmlNode xNode in xDoc.SelectNodes("//server/detail/request"))
{
buffer.AddRow();
buffer.SERSYSNR = SERVER;
buffer.CPUUSEQY = CPU;
buffer.TOTMEMQY = TOT_MEM;
buffer.USEMEMQY = USE_MEM;
buffer.UPTIMQY = UPTIME;
buffer.REQCNTQY = REQUESTS;
buffer.REQMSQY = FRAPI_TIME;
buffer.SERNONRSPIR = NORESPONSE;
buffer.SERRSTIR = RESET;
buffer.REQSYSNR = Convert.ToInt32(xNode.ChildNodes[0].InnerText);
buffer.REQIPTE = xNode.ChildNodes[1].InnerText;
buffer.REQURLTE = xNode.ChildNodes[2].InnerText;
buffer.REQRUNTMQY = Convert.ToInt32(xNode.ChildNodes[3].InnerText);
}
}
catch
{
// Hopefully we didn't throw an exception inside the foreach where a row has already been added...
buffer.AddRow();
buffer.SERSYSNR = SERVER;
buffer.SERNONRSPIR = true;
}
}
// public override void CreateNewOutputRows()
// {
/*
Add rows by calling the AddRow method on the member variable named "<Output Name>Buffer".
For example, call MyOutputBuffer.AddRow() if your output was named "MyOutput".
*/
//}
}
我可以在 DNS_NA 上使用条件拆分并制作 x 个脚本组件,然后将它们全部合并,但每次将新服务器添加到列表中时,我都必须编辑 SSIS 包。不理想。
【问题讨论】:
标签: c# sql sql-server ssis