Enabling Logging Programmatically

Applies to: SQL Server SSIS Integration Runtime in Azure Data Factory

The run-time engine provides a collection of LogProvider objects that enable event-specific information to be captured during package validation and execution. LogProvider objects are available to DtsContainer objects, including the TaskHost, Package, ForLoop, and ForEachLoop objects. Logging is enabled on individual containers, or on the whole package.

There are several types of log providers that are available for a container to use. This provides the flexibility to create and store log information in many formats. Enlisting a container object in logging is a two-step process: first logging is enabled, and then a log provider is selected. The LoggingOptions and LoggingMode properties of the container are used to specify the logged events and to select the log provider.

Enabling Logging

The LoggingMode property, found in each container that can perform logging, determines whether the container's event information is recorded to the event log. This property is assigned a value from the DTSLoggingMode structure, and is inherited from the container's parent by default. If the container is a package, and therefore has no parent, the property uses the UseParentSetting, which defaults to Disabled.

Selecting a Log Provider

After the LoggingMode property is set to Enabled, a log provider is added to the SelectedLogProviders collection of the container to complete the process. The SelectedLogProviders collection is available on the LoggingOptions object, and contains the log providers selected for the container. The Add method is called to create a provider and add it to the collection. The method then returns the log provider that was added to the collection. Each provider has configuration settings that are unique to that provider, and these properties are set using the ConfigString property.

The following table lists the available log providers, their description, and their ConfigString information.

Events are included in or excluded from the event log by setting the EventFilterKind and the EventFilter properties of the container. The EventFilterKind structure contains two values, ExclusionFilter and InclusionFilter, that indicate whether the events that are added to the EventFilter are included in the event log. The EventFilter property is then assigned a string array that contains the names of the events that are the subject of the filtering.

The following code enables logging on a package, adds the log provider for Text files to the SelectedLogProviders collection, and specifies a list of events to include in the logging output.

Sample

using System;  
using Microsoft.SqlServer.Dts.Runtime;  
  
namespace Microsoft.SqlServer.Dts.Samples  
{  
  class Program  
  {  
    static void Main(string[] args)  
    {  
      Package p = new Package();  
  
      ConnectionManager loggingConnection = p.Connections.Add("FILE");  
      loggingConnection.ConnectionString = @"C:\SSISPackageLog.txt";  
  
      LogProvider provider = p.LogProviders.Add("DTS.LogProviderTextFile.2");  
      provider.ConfigString = loggingConnection.Name;  
      p.LoggingOptions.SelectedLogProviders.Add(provider);  
      p.LoggingOptions.EventFilterKind = DTSEventFilterKind.Inclusion;  
      p.LoggingOptions.EventFilter = new String[] { "OnPreExecute",   
         "OnPostExecute", "OnError", "OnWarning", "OnInformation" };  
      p.LoggingMode = DTSLoggingMode.Enabled;  
  
      // Add tasks and other objects to the package.  
  
    }  
  }  
}  

Imports Microsoft.SqlServer.Dts.Runtime  
  
Module Module1  
  
  Sub Main()  
  
    Dim p As Package = New Package()  
  
    Dim loggingConnection As ConnectionManager = p.Connections.Add("FILE")  
    loggingConnection.ConnectionString = "C:\SSISPackageLog.txt"  
  
    Dim provider As LogProvider = p.LogProviders.Add("DTS.LogProviderTextFile.2")  
    provider.ConfigString = loggingConnection.Name  
    p.LoggingOptions.SelectedLogProviders.Add(provider)  
    p.LoggingOptions.EventFilterKind = DTSEventFilterKind.Inclusion  
    p.LoggingOptions.EventFilter = New String() {"OnPreExecute", _  
       "OnPostExecute", "OnError", "OnWarning", "OnInformation"}  
    p.LoggingMode = DTSLoggingMode.Enabled  
  
    ' Add tasks and other objects to the package.  
  
  End Sub  
  
End Module  

See Also

Integration Services (SSIS) Logging