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WF中的跟踪服务4 使用跟踪配置文件
默认的Tracking Profile会提取工作流中所有的跟踪信息，我们可以创建自己的跟踪配置文件来筛选跟踪信息。我们接着使用WF中的跟踪服务(3):使用SqlTrackingService跟踪规则中的例子，我们通过自定义tracking profile文件来跟踪RuleSet中变量A B C D的值的变化情况。
每一个TrackingProfile对象包含三个属性（WorkflowTrackPoints，ActivityTrackPoints，UserTrackPoints）表示三种跟踪数据，每一个属性都是相关的（WorkflowTrackPoint，ActivityTrackPoint，UserTrackPoint）的集合。每一个Track Point对象都有一个MatchingLocations属性表示该跟踪点匹配的位置。MatchingLocations相当于你主要的过滤器。例如一个WorkflowTrackPoint，你使用MatchingLocations来标识你要跟踪的位置如Created，Started等等。ActivityTrackPoint和UserTrackPoint除了该属性还有一个ExcludedLocations属性表示排除的位置。ActivityTrackPoint和UserTrackPoint还支持Extracts属性。表示你用来定义你要提取的独立的域或属性，还有一个Annotations属性你可以添加描述信息。WorkflowTrackingLocation获取将为此位置匹配的工作流状态事件的列表,ActivityTrackingLocation,UserTrackingLocation也是一个道理。
我们前面的例子中都是使用默认的Tracking Profile，它以一个XML串的形式存于DefaultTrackingProfile表的TrackingProfileXml字段中。我们自定义Tacking Pofile将生成一个XML串,存入TrackingProfile表的TrackingProfileXml字段中，自定义Tacking Pofile只对指定的工作流有效，默认的Tacking Pofile对所有没有自定义Tacking Pofile的工作流有效。如果所有工作流要使用同样的筛选，我们就可以直接修改默认的Tacking Pofile，所有的Tracking profile都包含一个版本Version数字。每一次你修改一个存在的Profile时，你都必须要增加Version数字，工作流引擎一直会使用版本Version数字比较高的Profile。跟踪配置文件在经过序列化后看起来将如下所示：
<?xml version="1.0" encoding="utf-16" standalone="yes"?>
<TrackingProfile xmlns="http://schemas.microsoft.com/winfx/2006/workflow/trackingprofile"
version="3.0.0.0">
<TrackPoints>
<WorkflowTrackPoint>
<MatchingLocation>
<WorkflowTrackingLocation>
<TrackingWorkflowEvents>
<TrackingWorkflowEvent>Created</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Completed</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Idle</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Suspended</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Resumed</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Persisted</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Unloaded</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Loaded</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Exception</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Terminated</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Aborted</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Changed</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Started</TrackingWorkflowEvent>
</TrackingWorkflowEvents>
</WorkflowTrackingLocation>
</MatchingLocation>
</WorkflowTrackPoint>
<ActivityTrackPoint>
<MatchingLocations>
<ActivityTrackingLocation>
<Activity>
<Type>System.Workflow.ComponentModel.Activity, System.Workflow.ComponentModel,
Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35</Type>
<MatchDerivedTypes>true</MatchDerivedTypes>
</Activity>
<ExecutionStatusEvents>
<ExecutionStatus>Initialized</ExecutionStatus>
<ExecutionStatus>Executing</ExecutionStatus>
<ExecutionStatus>Canceling</ExecutionStatus>
<ExecutionStatus>Closed</ExecutionStatus>
<ExecutionStatus>Compensating</ExecutionStatus>
<ExecutionStatus>Faulting</ExecutionStatus>
</ExecutionStatusEvents>
</ActivityTrackingLocation>
</MatchingLocations>
</ActivityTrackPoint>
</TrackPoints>
</TrackingProfile>
跟踪配置文件是通过使用跟踪配置文件架构创建的。
存储过程
Sql跟踪数据库中有一些存储过程用来管理Tracking profile，有两种方式来使用Tracking Profile。一种可以使用WF提供的对象模型TrackingProfile类，以xml的形式存储在数据库中。另一种可以直接使用XML文件， 但是，必须将以 XML 格式表示的跟踪配置文件反序列化为 TrackingProfile 对象，因为运行时需要 TrackingProfile 对象。下面是相关操作Tracking Profile的存储过程：
1.GetTrackingProfile：得到给定工作流类型的跟踪配置文件。
2.UpdateTrackingProfile：更新给定工作流类型的跟踪配置文件。
3.DeleteTrackingProfile：删除给定工作流类型的跟踪配置文件。该存储过程不会从 SQL 跟踪数据库中移除跟踪配置文件。它只是解除跟踪配置文件与给定工作流类型之间的关联。
4.SetInstanceTrackingProfile：设置给定工作流实例的跟踪配置文件。若要为运行中的工作流实例更新跟踪配置文件，请从要更改跟踪配置文件的 WorkflowInstance 对象中调用 SetInstanceTrackingProfile 存储过程，然后调用ReloadTrackingProfiles 方法。
5.DeleteInstanceTrackingProfile：删除给定工作流实例的跟踪配置文件。DeleteInstanceTrackingProfile 存储过程不会从 SQL 跟踪数据库中删除跟踪配置文件，而只是解除跟踪配置文件与给定工作流实例之间的关联。若要为运行中的工作流实例更新跟踪配置文件，请从要解除与跟踪配置文件关联的 WorkflowInstance 对象中调用 DeleteInstanceTrackingProfile 存储过程，然后调用 ReloadTrackingProfiles 方法。
6.GetCurrentDefaultTrackingProfile：检索 SqlTrackingService 使用的当前默认跟踪配置文件。当 SqlTrackingService 的 UseDefaultProfile 属性设置为“True”，且当工作流类型没有关联的 TrackingProfile 时，使用默认配置文件。7.GetDefaultTrackingProfile：得到默认的跟踪配置文件。
8.UpdateDefaultTrackingProfile：更新 SqlTrackingService 所使用的默认跟踪配置文件。 当 SqlTrackingService 的 UseDefaultProfile 属性设置为 true，并且工作流类型没有关联的 TrackingProfile 时，使用默认配置文件。不能删除默认跟踪配置文件。要停止使用默认配置文件，请将 SqlTrackingService 的 UseDefaultProfile 属性设置为 false。
实现TrackProfileHelper 类
我们来封装一个类来完成对TrackProfile的基本操作，TrackingProfileHelper类。主要使用[GetTrackingProfile]，[UpdateTrackingProfile]，[DeleteTrackingProfile]存储过程，代码如下：
namespace CarySqlRuleTracking
{
public class TrackingProfileHelper
{
private String strConn = String.Empty;
public TrackingProfileHelper(String connString)
{
strConn = connString;
}
public TrackingProfile RetrieveProfile(Type workflowType)
{
TrackingProfile profile = null;
try
{
String profileXml = null;
using (SqlConnection conn= new SqlConnection(strConn))
{
SqlCommand command = new SqlCommand("GetTrackingProfile", conn);
command.CommandType = CommandType.StoredProcedure;
command.Parameters.Add(new SqlParameter(
"@TypeFullName", workflowType.FullName));
command.Parameters.Add(new SqlParameter(
"@AssemblyFullName", workflowType.Assembly.FullName));
command.Parameters.Add(new SqlParameter(
"@Version", null));
command.Parameters.Add(new SqlParameter(
"@CreateDefault", true));
command.Connection.Open();
using (SqlDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
profileXml = reader["TrackingProfile"] as String;
}
reader.Close();
}
}
if (profileXml != null)
{
TrackingProfileSerializer serializer= new TrackingProfileSerializer();
using (StringReader reader = new StringReader(profileXml))
{
profile = serializer.Deserialize(reader);
}
}
}
catch (SqlException e)
{
Console.WriteLine("SqlException in RetrieveProfile: {0}", e.Message);
throw;
}
return profile;
}
public void UpdateProfile(TrackingProfile profile, Type workflowType)
{
try
{
String profileXml = null;
TrackingProfileSerializer serializer= new TrackingProfileSerializer();
using (StringWriter writer = new StringWriter(new StringBuilder()))
{
serializer.Serialize(writer, profile);
profileXml = writer.ToString();
}
if (profileXml != null)
{
using (SqlConnection conn= new SqlConnection(strConn))
{
SqlCommand command = new SqlCommand(
"UpdateTrackingProfile", conn);
command.CommandType = CommandType.StoredProcedure;
command.Parameters.Add(new SqlParameter(
"@TypeFullName", workflowType.FullName));
command.Parameters.Add(new SqlParameter(
"@AssemblyFullName", workflowType.Assembly.FullName));
command.Parameters.Add(new SqlParameter(
"@Version", profile.Version.ToString()));
command.Parameters.Add(new SqlParameter(
"@TrackingProfileXml", profileXml));
command.Connection.Open();
command.ExecuteNonQuery();
}
}
}
catch (SqlException e)
{
Console.WriteLine("SqlException in UpdateProfile: {0}", e.Message);
throw;
}
}
public void DeleteProfile(Type workflowType)
{
try
{
using (SqlConnection conn= new SqlConnection(strConn))
{
SqlCommand command = new SqlCommand(
@"DELETE FROM TrackingProfile WHERE WorkflowTypeId IN
(SELECT TypeId FROM Type WHERE TypeFullName = @TypeFullName
AND AssemblyFullName = @AssemblyFullName)",conn);
command.Parameters.Add(new SqlParameter(
"@TypeFullName", workflowType.FullName));
command.Parameters.Add(new SqlParameter(
"@AssemblyFullName", workflowType.Assembly.FullName));
command.Connection.Open();
command.ExecuteNonQuery();
}
}
catch (SqlException e)
{
Console.WriteLine("SqlException in DeleteProfile: {0}", e.Message);
throw;
}
}
}
}
自定义Tracking Profile
1.我们使用WF中的跟踪服务(3):使用SqlTrackingService跟踪规则这文中的例子，我们只需要跟踪活动的Executing和Closed状态来查看踪RuleSet中A B C D各个值在PolicyActivity执行前后的变化情况。代码如下：
private static void AddCustomTrackingProfile()
{
TrackingProfileHelper helper = new TrackingProfileHelper(strConn);
TrackingProfile profile = helper.RetrieveProfile(
typeof(CarySqlRuleTracking.CarySqlRuleTrackingWorkflow));
if (profile != null)
{
ActivityTrackingLocation location = new ActivityTrackingLocation();
location.ActivityTypeName = "PolicyActivity";
location.ExecutionStatusEvents.Add(ActivityExecutionStatus.Executing);
ActivityTrackPoint point = new ActivityTrackPoint();
point.Extracts.Add(new WorkflowDataTrackingExtract("A"));
point.Extracts.Add(new WorkflowDataTrackingExtract("B"));
point.Extracts.Add(new WorkflowDataTrackingExtract("C"));
point.Extracts.Add(new WorkflowDataTrackingExtract("D"));
point.Annotations.Add("--RuleSet执行之前--");
point.MatchingLocations.Add(location);
profile.ActivityTrackPoints.Add(point);
location = new ActivityTrackingLocation();
location.ActivityTypeName = "PolicyActivity";
location.ExecutionStatusEvents.Add(ActivityExecutionStatus.Closed);
point = new ActivityTrackPoint();
point.Extracts.Add(new WorkflowDataTrackingExtract("A"));
point.Extracts.Add(new WorkflowDataTrackingExtract("B"));
point.Extracts.Add(new WorkflowDataTrackingExtract("C"));
point.Extracts.Add(new WorkflowDataTrackingExtract("D"));
point.Annotations.Add("--RuleSet执行之后--");
point.MatchingLocations.Add(location);
profile.ActivityTrackPoints.Add(point);
profile.Version = new Version(profile.Version.Major, profile.Version.Minor + 1, 0);
helper.UpdateProfile(profile,typeof(CarySqlRuleTracking.CarySqlRuleTrackingWorkflow));
}
}
private static void DeleteCustomTrackingProfile()
{
TrackingProfileHelper helper = new TrackingProfileHelper(strConn);
helper.DeleteProfile(typeof(CarySqlTracking.CaryRuleWorkflow));
}
2.在WF中的跟踪服务(3):使用SqlTrackingService跟踪规则文章中例子的基础上，宿主程序中工作流实例执行前后添加如下代码：
AddCustomTrackingProfile();
DeleteCustomTrackingProfile();
3.执行结果如下图：
MSDN中有一个“跟踪配置文件设计器”示例，这个例子值得大家好好研究下，地址：ms-help://MS.MSDNQTR.v90.chs/wcf_wf_samples/html/a280199c-3000-4148-ac63-cb5aaeac07c8.htm
文章来源: http://www.cnblogs.com/carysun/archive/2008/11/23/TrackingProfile.html
<?xml version="1.0" encoding="utf-16" standalone="yes"?>
<TrackingProfile xmlns="http://schemas.microsoft.com/winfx/2006/workflow/trackingprofile"
version="3.0.0.0">
<TrackPoints>
<WorkflowTrackPoint>
<MatchingLocation>
<WorkflowTrackingLocation>
<TrackingWorkflowEvents>
<TrackingWorkflowEvent>Created</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Completed</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Idle</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Suspended</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Resumed</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Persisted</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Unloaded</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Loaded</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Exception</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Terminated</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Aborted</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Changed</TrackingWorkflowEvent>
<TrackingWorkflowEvent>Started</TrackingWorkflowEvent>
</TrackingWorkflowEvents>
</WorkflowTrackingLocation>
</MatchingLocation>
</WorkflowTrackPoint>
<ActivityTrackPoint>
<MatchingLocations>
<ActivityTrackingLocation>
<Activity>
<Type>System.Workflow.ComponentModel.Activity, System.Workflow.ComponentModel,
Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35</Type>
<MatchDerivedTypes>true</MatchDerivedTypes>
</Activity>
<ExecutionStatusEvents>
<ExecutionStatus>Initialized</ExecutionStatus>
<ExecutionStatus>Executing</ExecutionStatus>
<ExecutionStatus>Canceling</ExecutionStatus>
<ExecutionStatus>Closed</ExecutionStatus>
<ExecutionStatus>Compensating</ExecutionStatus>
<ExecutionStatus>Faulting</ExecutionStatus>
</ExecutionStatusEvents>
</ActivityTrackingLocation>
</MatchingLocations>
</ActivityTrackPoint>
</TrackPoints>
</TrackingProfile>
跟踪配置文件是通过使用跟踪配置文件架构创建的。
