/// <summary>
/// Perform startup duties associated with this tracking service.
/// <remarks>
/// This implementation calls a virtual method to create a single
/// resource provider for this tracking service and initialises
/// a timer to poll for tracking profile changes.
/// </remarks>
/// </summary>
protected override void Start()
{
TraceHelper.Trace();
try
{
// retrieve the active resource provider
this.resourceProvider = CreateResourceProvider();
// configure the profile change poll timer
this.profileChangeTimer = new Timer(profileChangeInterval.TotalMilliseconds);
this.profileChangeTimer.AutoReset = false;
this.profileChangeTimer.Elapsed += profileChangeTimer_Elapsed;
this.profileChangeTimer.Start();
base.Start();
}
catch (Exception e)
{
string errorMessage = RM.Get_Error_TrackingServiceException(e.ToString());
TraceHelper.Trace(errorMessage);
TrackingException trackingException =
new TrackingException(errorMessage, e);
base.RaiseServicesExceptionNotHandledEvent(
trackingException, Guid.Empty);
throw trackingException;
}
}
///<summary>
///Must be overridden in the derived class, and when implemented, returns the tracking profile for the specified workflow instance.
///</summary>
///
///<returns>
///A <see cref="T:System.Workflow.Runtime.Tracking.TrackingProfile"></see>.
///</returns>
///
///<param name="workflowInstanceId">The <see cref="T:System.Guid"></see> of the workflow instance.</param>
protected override TrackingProfile GetProfile(Guid workflowInstanceId)
{
TraceHelper.Trace();
TrackingProfile trackingProfile;
try
{
using (ITrackingServiceResourceAccessor resourceAccessor = CreateAccessor(resourceProvider))
{
trackingProfile = resourceAccessor.GetTrackingProfile(workflowInstanceId);
}
}
catch (Exception e)
{
string errorMessage = RM.Get_Error_TrackingServiceException(e.ToString());
TraceHelper.Trace(errorMessage);
TrackingException trackingException =
new TrackingException(errorMessage, e);
base.RaiseServicesExceptionNotHandledEvent(
trackingException, workflowInstanceId);
throw trackingException;
}
return(trackingProfile);
}
///<summary>
///Must be overridden in the derived class, and when implemented, retrieves a new tracking profile for the specified workflow instance if the tracking profile has changed since it was last loaded.
///</summary>
///
///<returns>
///true if a new <see cref="T:System.Workflow.Runtime.Tracking.TrackingProfile"></see> should be loaded; otherwise, false. If true, the <see cref="T:System.Workflow.Runtime.Tracking.TrackingProfile"></see> is returned in profile.
///</returns>
///
///<param name="workflowType">The <see cref="T:System.Type"></see> of the workflow instance.</param>
///<param name="profile">When this method returns, contains the <see cref="T:System.Workflow.Runtime.Tracking.TrackingProfile"></see> to load. This parameter is passed un-initialized.</param>
///<param name="workflowInstanceId">The <see cref="T:System.Guid"></see> of the workflow instance.</param>
protected override bool TryReloadProfile(Type workflowType, Guid workflowInstanceId, out TrackingProfile profile)
{
TraceHelper.Trace();
try
{
using (ITrackingServiceResourceAccessor resourceAccessor = CreateAccessor(resourceProvider))
{
return(resourceAccessor.TryReloadTrackingProfile(workflowType, workflowInstanceId, out profile));
}
}
catch (Exception e)
{
string errorMessage = RM.Get_Error_TrackingServiceException(e.ToString());
TraceHelper.Trace(errorMessage);
TrackingException trackingException =
new TrackingException(errorMessage, e);
base.RaiseServicesExceptionNotHandledEvent(
trackingException, Guid.Empty);
throw trackingException;
}
}
/// <summary>
/// Perform shutdown duties associated with this tracking service.
/// </summary>
protected override void Stop()
{
TraceHelper.Trace();
try
{
if (this.profileChangeTimer != null)
{
this.profileChangeTimer.Dispose();
this.profileChangeTimer = null;
}
base.Stop();
}
catch (Exception e)
{
string errorMessage = RM.Get_Error_TrackingServiceException(e.ToString());
TraceHelper.Trace(errorMessage);
TrackingException trackingException =
new TrackingException(errorMessage, e);
base.RaiseServicesExceptionNotHandledEvent(
trackingException, Guid.Empty);
throw trackingException;
}
}
/// <summary>
/// Perform startup duties associated with this tracking service.
/// <remarks>
/// This implementation calls a virtual method to create a single
/// resource provider for this tracking service and initialises
/// a timer to poll for tracking profile changes.
/// </remarks>
/// </summary>
protected override void Start()
{
TraceHelper.Trace();
try
{
// retrieve the active resource provider
this.resourceProvider = CreateResourceProvider();
// configure the profile change poll timer
this.profileChangeTimer = new Timer(profileChangeInterval.TotalMilliseconds);
this.profileChangeTimer.AutoReset = false;
this.profileChangeTimer.Elapsed += profileChangeTimer_Elapsed;
this.profileChangeTimer.Start();
base.Start();
}
catch (Exception e)
{
string errorMessage = RM.Get_Error_TrackingServiceException(e.ToString());
TraceHelper.Trace(errorMessage);
TrackingException trackingException =
new TrackingException(errorMessage, e);
base.RaiseServicesExceptionNotHandledEvent(
trackingException, Guid.Empty);
throw trackingException;
}
}
///<summary>
///Must be overridden in the derived class, and when implemented, retrieves a new tracking profile for the specified workflow instance if the tracking profile has changed since it was last loaded.
///</summary>
///
///<returns>
///true if a new <see cref="T:System.Workflow.Runtime.Tracking.TrackingProfile"></see> should be loaded; otherwise, false. If true, the <see cref="T:System.Workflow.Runtime.Tracking.TrackingProfile"></see> is returned in profile.
///</returns>
///
///<param name="workflowType">The <see cref="T:System.Type"></see> of the workflow instance.</param>
///<param name="profile">When this method returns, contains the <see cref="T:System.Workflow.Runtime.Tracking.TrackingProfile"></see> to load. This parameter is passed un-initialized.</param>
///<param name="workflowInstanceId">The <see cref="T:System.Guid"></see> of the workflow instance.</param>
protected override bool TryReloadProfile(Type workflowType, Guid workflowInstanceId, out TrackingProfile profile)
{
TraceHelper.Trace();
try
{
using (ITrackingServiceResourceAccessor resourceAccessor = CreateAccessor(resourceProvider))
{
return resourceAccessor.TryReloadTrackingProfile(workflowType, workflowInstanceId, out profile);
}
}
catch (Exception e)
{
string errorMessage = RM.Get_Error_TrackingServiceException(e.ToString());
TraceHelper.Trace(errorMessage);
TrackingException trackingException =
new TrackingException(errorMessage, e);
base.RaiseServicesExceptionNotHandledEvent(
trackingException, Guid.Empty);
throw trackingException;
}
}
///<summary>
///Must be overridden in the derived class, and when implemented, returns the tracking profile for the specified workflow instance.
///</summary>
///
///<returns>
///A <see cref="T:System.Workflow.Runtime.Tracking.TrackingProfile"></see>.
///</returns>
///
///<param name="workflowInstanceId">The <see cref="T:System.Guid"></see> of the workflow instance.</param>
protected override TrackingProfile GetProfile(Guid workflowInstanceId)
{
TraceHelper.Trace();
TrackingProfile trackingProfile;
try
{
using (ITrackingServiceResourceAccessor resourceAccessor = CreateAccessor(resourceProvider))
{
trackingProfile = resourceAccessor.GetTrackingProfile(workflowInstanceId);
}
}
catch (Exception e)
{
string errorMessage = RM.Get_Error_TrackingServiceException(e.ToString());
TraceHelper.Trace(errorMessage);
TrackingException trackingException =
new TrackingException(errorMessage, e);
base.RaiseServicesExceptionNotHandledEvent(
trackingException, workflowInstanceId);
throw trackingException;
}
return trackingProfile;
}
/// <summary>
/// Perform shutdown duties associated with this tracking service.
/// </summary>
protected override void Stop()
{
TraceHelper.Trace();
try
{
if (this.profileChangeTimer != null)
{
this.profileChangeTimer.Dispose();
this.profileChangeTimer = null;
}
base.Stop();
}
catch (Exception e)
{
string errorMessage = RM.Get_Error_TrackingServiceException(e.ToString());
TraceHelper.Trace(errorMessage);
TrackingException trackingException =
new TrackingException(errorMessage, e);
base.RaiseServicesExceptionNotHandledEvent(
trackingException, Guid.Empty);
throw trackingException;
}
}
