Question

我有一个SSIS脚本任务，该任务收集扩展的错误信息。

该脚本的内容如下：

/// <summary>
/// ScriptMain is the entry point class of the script.  Do not change the name, attributes,
/// or parent of this class.
/// </summary>
[Microsoft.SqlServer.Dts.Tasks.ScriptTask.SSISScriptTaskEntryPointAttribute]

public partial class ScriptMain : Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase
{

    Dictionary<string, string> lineageIds = null;

    public void Main()
    {
        // Grab the executables so we have to something to iterate over, and initialize our lineageIDs list
        // Why the executables?  Well, SSIS won't let us store a reference to the Package itself...
        Dts.Variables["User::execsObj"].Value = ((Package)Dts.Variables["User::execsObj"].Parent).Executables;
        Dts.Variables["User::lineageIds"].Value = new Dictionary<string, string>();
        lineageIds = (Dictionary<string, string>)Dts.Variables["User::lineageIds"].Value;
        Executables execs = (Executables)Dts.Variables["User::execsObj"].Value;

        ReadExecutables(execs);

        Dts.TaskResult = (int)ScriptResults.Success;
    }

    private void ReadExecutables(Executables executables)
    {
        foreach (Executable pkgExecutable in executables)
        {
            if (object.ReferenceEquals(pkgExecutable.GetType(), typeof(Microsoft.SqlServer.Dts.Runtime.TaskHost)))
            {
                TaskHost pkgExecTaskHost = (TaskHost)pkgExecutable;
                if (pkgExecTaskHost.CreationName.StartsWith("SSIS.Pipeline"))
                {
                    ProcessDataFlowTask(pkgExecTaskHost);
                }
            }
            else if (object.ReferenceEquals(pkgExecutable.GetType(), typeof(Microsoft.SqlServer.Dts.Runtime.ForEachLoop)))
            {
                // Recurse into FELCs
                ReadExecutables(((ForEachLoop)pkgExecutable).Executables);
            }
        }
    }

    private void ProcessDataFlowTask(TaskHost currentDataFlowTask)
    {
        MainPipe currentDataFlow = (MainPipe)currentDataFlowTask.InnerObject;
        foreach (IDTSComponentMetaData100 currentComponent in currentDataFlow.ComponentMetaDataCollection)
        {
            // Get the inputs in the component.
            foreach (IDTSInput100 currentInput in currentComponent.InputCollection)
                foreach (IDTSInputColumn100 currentInputColumn in currentInput.InputColumnCollection)
                    lineageIds.Add(currentDataFlowTask.ID.ToString() + currentInputColumn.ID, currentInputColumn.Name);

            // Get the outputs in the component.
            foreach (IDTSOutput100 currentOutput in currentComponent.OutputCollection)
                foreach (IDTSOutputColumn100 currentoutputColumn in currentOutput.OutputColumnCollection)
                    lineageIds.Add(currentDataFlowTask.ID.ToString() + currentoutputColumn.ID, currentoutputColumn.Name);
        }
    }

    enum ScriptResults
    {
        Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success,
        Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure
    };
}

这曾经在SQL Server 2014上正常工作。但是，由于升级到SQL Server 2017，因此该任务在行上给出以下错误消息：

MainPipe currentDataFlow = (MainPipe)currentDataFlowTask.InnerObject;

ST_47767930511349f4b94ba74c27240570中发生了'System.InvalidCastException'类型的异常，但未在用户代码中处理

其他信息：无法将类型为“ System .__ ComObject”的COM对象转换为接口类型为“ Microsoft.SqlServer.Dts.Pipeline.Wrapper.MainPipe”。此操作失败是因为由于以下错误而导致IID为“ {6D3931AC-822D-414C-8F10-7447A54BA55C}”的COM组件上的QueryInterface调用由于以下错误而失败：不支持此类接口（HRESULT异常：0x80004002（E_NOINTERFACE））

自升级到SQL Server 2017以来，还有其他人看到过吗？

Answer 1

结果证明currentDataFlowTask.InnerObject返回的Com对象来自较新版本的Microsoft.SqlServer.DTSPipelineWrap。

为解决此问题，我删除了对Microsoft.SqlServer.DTSPipelineWrap的引用，并替换为同一程序集的版本14。

然后我更改了以下行：

MainPipe currentDataFlow = (MainPipe)currentDataFlowTask.InnerObject;

到

IDTSPipeline130 currentDataFlow = (IDTSPipeline130)currentDataFlowTask.InnerObject;

SSIS脚本任务收集沿袭ID

1 个答案: