Caricamento ed esecuzione di un pacchetto remoto a livello di programmazione

Un pacchetto di Integration Services può essere caricato direttamente da un file, direttamente da SQL Server o dall'archivio pacchetti SSIS, che gestisce l'archiviazione di pacchetti in SQL Server e in cartelle speciali del file system. Questo esempio supporta tutte le opzioni disponibili utilizzando un costrutto Select Case o switch per selezionare la sintassi appropriata per l'avvio del pacchetto e per concatenare gli argomenti di input in modo appropriato. Il metodo LaunchPackage del servizio Web restituisce il risultato dell'esecuzione del pacchetto come numero intero anziché come valore DTSExecResult, per cui i computer client non richiedono un riferimento agli assembly di Integration Services.

Per creare un servizio Web per eseguire i pacchetti nel server a livello di programmazione

Imports System.Web
Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports Microsoft.SqlServer.Dts.Runtime
Imports System.IO

<WebService(Namespace:="http://dtsue/")> _
<WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Public Class LaunchSSISPackageService
  Inherits System.Web.Services.WebService

  ' LaunchPackage Method Parameters:
  ' 1. sourceType: file, sql, dts
  ' 2. sourceLocation: file system folder, (none), logical folder
  ' 3. packageName: for file system, ".dtsx" extension is appended

  <WebMethod()> _
  Public Function LaunchPackage( _
    ByVal sourceType As String, _
    ByVal sourceLocation As String, _
    ByVal packageName As String) As Integer 'DTSExecResult

    Dim packagePath As String
    Dim myPackage As Package
    Dim integrationServices As New Application

    ' Combine path and file name.
    packagePath = Path.Combine(sourceLocation, packageName)

    Select Case sourceType
      Case "file"
        ' Package is stored as a file.
        ' Add extension if not present.
        If String.IsNullOrEmpty(Path.GetExtension(packagePath)) Then
          packagePath = String.Concat(packagePath, ".dtsx")
        End If
        If File.Exists(packagePath) Then
          myPackage = integrationServices.LoadPackage(packagePath, Nothing)
        Else
          Throw New ApplicationException( _
            "Invalid file location: " & packagePath)
        End If
      Case "sql"
        ' Package is stored in MSDB.
        ' Combine logical path and package name.
        If integrationServices.ExistsOnSqlServer(packagePath, ".", String.Empty, String.Empty) Then
          myPackage = integrationServices.LoadFromSqlServer( _
            packageName, "(local)", String.Empty, String.Empty, Nothing)
        Else
          Throw New ApplicationException( _
            "Invalid package name or location: " & packagePath)
        End If
      Case "dts"
        ' Package is managed by SSIS Package Store.
        ' Default logical paths are File System and MSDB.
        If integrationServices.ExistsOnDtsServer(packagePath, ".") Then
          myPackage = integrationServices.LoadFromDtsServer(packagePath, "localhost", Nothing)
        Else
          Throw New ApplicationException( _
            "Invalid package name or location: " & packagePath)
        End If
      Case Else
        Throw New ApplicationException( _
          "Invalid sourceType argument: valid values are 'file', 'sql', and 'dts'.")
    End Select

    Return myPackage.Execute()

  End Function

End Class

using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using Microsoft.SqlServer.Dts.Runtime;
using System.IO;

[WebService(Namespace = "http://dtsue/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class LaunchSSISPackageServiceCS : System.Web.Services.WebService
{
  public LaunchSSISPackageServiceCS()
  {
    }

  // LaunchPackage Method Parameters:
  // 1. sourceType: file, sql, dts
  // 2. sourceLocation: file system folder, (none), logical folder
  // 3. packageName: for file system, ".dtsx" extension is appended

  [WebMethod]
  public int LaunchPackage(string sourceType, string sourceLocation, string packageName)
  { 

    string packagePath;
    Package myPackage;
    Application integrationServices = new Application();

    // Combine path and file name.
    packagePath = Path.Combine(sourceLocation, packageName);

    switch(sourceType)
    {
      case "file":
        // Package is stored as a file.
        // Add extension if not present.
        if (String.IsNullOrEmpty(Path.GetExtension(packagePath)))
        {
          packagePath = String.Concat(packagePath, ".dtsx");
        }
        if (File.Exists(packagePath))
        {
          myPackage = integrationServices.LoadPackage(packagePath, null);
        }
        else
        {
          throw new ApplicationException("Invalid file location: "+packagePath);
        }
        break;
      case "sql":
        // Package is stored in MSDB.
        // Combine logical path and package name.
        if (integrationServices.ExistsOnSqlServer(packagePath, ".", String.Empty, String.Empty))
        {
          myPackage = integrationServices.LoadFromSqlServer(packageName, "(local)", String.Empty, String.Empty, null);
        }
        else
        {
          throw new ApplicationException("Invalid package name or location: "+packagePath);
        }
        break;
      case "dts":
        // Package is managed by SSIS Package Store.
        // Default logical paths are File System and MSDB.
        if (integrationServices.ExistsOnDtsServer(packagePath, "."))
        {
          myPackage = integrationServices.LoadFromDtsServer(packagePath, "localhost", null);
        }
        else
        {
          throw new ApplicationException("Invalid package name or location: "+packagePath);
        }
        break;
      default:
        throw new ApplicationException("Invalid sourceType argument: valid values are 'file', 'sql', and 'dts'.");
    }

    return (Int32)myPackage.Execute();

  }

}

Nell'applicazione console di esempio seguente viene utilizzato il servizio Web per eseguire un pacchetto. Il metodo LaunchPackage del servizio Web restituisce il risultato dell'esecuzione del pacchetto come numero intero anziché come valore DTSExecResult, per cui i computer client non richiedono un riferimento agli assembly di Integration Services. Nell'esempio viene creata un'enumerazione privata i cui valori rispecchiano i valori DTSExecResult per riportare i risultati dell'esecuzione.

Per creare un'applicazione console per testare il servizio Web

Module LaunchSSISPackageTest

  Sub Main()

    Dim launchPackageService As New LaunchSSISPackageService.LaunchSSISPackageService
    Dim packageResult As Integer

    Try
      packageResult = launchPackageService.LaunchPackage("sql", String.Empty, "SimpleTestPackage")
    Catch ex As Exception
      ' The type of exception returned by a Web service is:
      '  System.Web.Services.Protocols.SoapException
      Console.WriteLine("The following exception occurred: " & ex.Message)
    End Try

    Console.WriteLine(CType(packageResult, PackageExecutionResult).ToString)
    Console.ReadKey()

  End Sub

  Private Enum PackageExecutionResult
    PackageSucceeded
    PackageFailed
    PackageCompleted
    PackageWasCancelled
  End Enum

End Module

using System;

namespace LaunchSSISPackageSvcTestCS
{
  class Program
  {
    static void Main(string[] args)
    {
      LaunchSSISPackageServiceCS.LaunchSSISPackageServiceCS launchPackageService = new LaunchSSISPackageServiceCS.LaunchSSISPackageServiceCS();
      int packageResult = 0;

      try
      {
        packageResult = launchPackageService.LaunchPackage("sql", String.Empty, "SimpleTestPackage");
      }
      catch (Exception ex)
      {
        // The type of exception returned by a Web service is:
        //  System.Web.Services.Protocols.SoapException
        Console.WriteLine("The following exception occurred: " + ex.Message);
      }

      Console.WriteLine(((PackageExecutionResult)packageResult).ToString());
      Console.ReadKey();

    }

    private enum PackageExecutionResult
    {
      PackageSucceeded,
      PackageFailed,
      PackageCompleted,
      PackageWasCancelled
    };

  }
}

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