WF4.0 基础篇 (二十二) Tracking

Tracking 介绍

WF跟踪是用来记录工作流执行情况

WF跟踪由以下几部分组成：

跟踪记录 Tracking Records	从工作流运行时发出
跟踪配置 Tracking Profile	用来筛选从工作流实例中发出的跟踪记录
跟踪参与者 Tracking Participants	用来订阅跟踪记录。跟踪参与者包括处理来自跟踪记录的负载的逻辑
ActivityInfo	System.Activities.Tracking.ActivityInfo
TrackingProvider	System.Activities.Tracking.TrackingProvider

跟踪记录 TrackingRecord

跟踪记录[TrackingRecord]

DLL:System.Activities.dll

类名:System.Activities.Tracking.TrackingRecord



TrackingRecord为[Abstract],WF4自带了以下功能[TrackingRecord]

CustomTrackingRecord	可在Activity中使用[context.Track(CustomTrackingRecord)]方式添加自定义跟踪记录

跟踪配置 TrackingProfile

跟踪配置[TrackingProfile]

DLL:System.Activities.dll

类名:System.Activities.Tracking.TrackingProfile





Queries类型为[System.Collections.ObjectModel.Collection<System.Activities.Tracking.TrackingQuery>],,WF4自带了以下功能[TrackingQuery]



工作流追踪包括两个主要组件：追踪参与和追踪配置。追踪配置定义了您希望运行时需要追踪的事件和数据，配置(Profiles)包括以下三种重要的查询类型：

ActivityStateQuery	用于指定活动的状态(如关闭)、提取数据的变量和参数 [States属性]:由System.Activities.Tracking.ActivityStates的[Fieldes]提供
WorkflowInstanceQuery	用于指定工作流事件 [States属性]:由System.Activities.Tracking.WorkflowInstanceStates的[Fieldes]提供
CustomTrackingQuery	用于指定对追踪数据的明确调用，常用语自定义的活动中

跟踪参与者TrackingParticipant

跟踪参与者 [TrackingParticipant]

DLL:System.Activities.dll

类名:System.Activities.Tracking.TrackingProfile

abstract



要自定义[跟踪参与者]要从该类继承

自定义跟踪参与者

例子下载:
http://files.cnblogs.com/foundation/CustomTrackingSample.rar

自定义跟踪参与者

public class myTrackingParticipant : System.Activities.Tracking.TrackingParticipant { private const String participantName = "wxwinter_myTrackingParticipant"; public myTrackingParticipant() { Console.WriteLine( "{0} Created", participantName); } protected override void Track(System.Activities.Tracking.TrackingRecord record, TimeSpan timeout) { Console.Write( "{0} emitted trackRecord: {1} Level: {2}, RecordNumber: {3}", participantName, record.GetType().FullName, record.Level, record.RecordNumber); System.Activities.Tracking.WorkflowInstanceRecord workflowInstanceRecord = record as System.Activities.Tracking.WorkflowInstanceRecord; if (workflowInstanceRecord != null) { Console.WriteLine( " Workflow InstanceID: {0} Workflow instance state: {1}", record.InstanceId, workflowInstanceRecord.State); } System.Activities.Tracking.ActivityStateRecord activityStateRecord = record as System.Activities.Tracking.ActivityStateRecord; if (activityStateRecord != null) { IDictionary<String, object> variables = activityStateRecord.Variables; StringBuilder vars = new StringBuilder(); if (variables.Count > 0) { vars.AppendLine("\n\tVariables:"); foreach (KeyValuePair<string, object> variable in variables) { vars.AppendLine(String.Format( "\t\tName: {0} Value: {1}", variable.Key, variable.Value)); } } Console.WriteLine( " :Activity DisplayName: {0} :ActivityInstanceState: {1} {2}", activityStateRecord.Activity.Name, activityStateRecord.State, ((variables.Count > 0) ? vars.ToString() : String.Empty)); } System.Activities.Tracking.CustomTrackingRecord customTrackingRecord = record as System.Activities.Tracking.CustomTrackingRecord; if ((customTrackingRecord != null) && (customTrackingRecord.Data.Count > 0)) { Console.WriteLine("\n\tUser Data:"); foreach (string data in customTrackingRecord.Data.Keys) { Console.WriteLine(" \t\t {0} : {1}", data, customTrackingRecord.Data[data]); } } Console.WriteLine(); } }

定义Profile

public class myTrackingTools { public static System.Activities.Tracking.TrackingParticipant getTracking() { //(1) TrackingProfile System.Activities.Tracking.TrackingProfile trackingProfile = new System.Activities.Tracking.TrackingProfile(); trackingProfile.Name = "wxwinterTrackingProfile"; //(1.1) System.Activities.Tracking.CustomTrackingQuery customQuery = new System.Activities.Tracking.CustomTrackingQuery(); customQuery.Name = "*"; customQuery.ActivityName = "*"; //(1.2) System.Activities.Tracking.WorkflowInstanceQuery instanceQuery = new System.Activities.Tracking.WorkflowInstanceQuery(); instanceQuery.States.Add(System.Activities.Tracking.WorkflowInstanceStates.Aborted); instanceQuery.States.Add(System.Activities.Tracking.WorkflowInstanceStates.Canceled); instanceQuery.States.Add(System.Activities.Tracking.WorkflowInstanceStates.Completed); instanceQuery.States.Add(System.Activities.Tracking.WorkflowInstanceStates.Idle); instanceQuery.States.Add(System.Activities.Tracking.WorkflowInstanceStates.Persisted); instanceQuery.States.Add(System.Activities.Tracking.WorkflowInstanceStates.Resumed); instanceQuery.States.Add(System.Activities.Tracking.WorkflowInstanceStates.Started); instanceQuery.States.Add(System.Activities.Tracking.WorkflowInstanceStates.Suspended); instanceQuery.States.Add(System.Activities.Tracking.WorkflowInstanceStates.Terminated); instanceQuery.States.Add(System.Activities.Tracking.WorkflowInstanceStates.UnhandledException); instanceQuery.States.Add(System.Activities.Tracking.WorkflowInstanceStates.Unloaded); instanceQuery.States.Add(System.Activities.Tracking.WorkflowInstanceStates.Unsuspended); //(1.3) System.Activities.Tracking.ActivityStateQuery activityQuery = new System.Activities.Tracking.ActivityStateQuery(); activityQuery.ActivityName = "*"; activityQuery.States.Add("*"); // System.Activities.Tracking.ActivityStates.Executing // System.Activities.Tracking.ActivityStates.Canceled activityQuery.Variables.Add("*"); activityQuery. Arguments.Add("*"); //(1.4) trackingProfile.Queries.Add(customQuery); trackingProfile.Queries.Add(instanceQuery); trackingProfile.Queries.Add(activityQuery); //(2) myTrackingParticipant myTracking = new myTrackingParticipant(); myTracking.TrackingProfile = trackingProfile; return myTracking; } }

具有CustomTrackingRecord功能的Activity

public sealed class myActivity : CodeActivity { protected override void Execute(CodeActivityContext context) { Console.WriteLine("myActivity Execute"); System.Activities.Tracking.CustomTrackingRecord myRecord = new System.Activities.Tracking.CustomTrackingRecord("myActivity_CustomTrackingRecord"); myRecord.Data.Add("wxd", 12345); myRecord.Data.Add("wxwinter", "lzm"); context.Track(myRecord); } }

使用

工作流
宿主	class Program { static void Main(string[] args) { System.Console.WindowWidth = 150; //----------------------------------------------------------------------------------- //WorkflowApplication WorkflowApplication instance = new WorkflowApplication(new testWorkflow()); instance.Extensions.Add(myTrackingTools.getTracking()); instance.Run(); //------------------------------------- or ------------------------------------------ //WorkflowInvoke // WorkflowInvoker invoker = new WorkflowInvoker(new testWorkflow()); // invoker.Extensions.Add(myTrackingTools.getTracking()); // invoker.Invoke(); //--------------------------------------------------------------------------------- System.Console.Read(); } }
结果

EtwTrackingParticipant

[EtwTrackingParticipant]:(ETW：Enterprise Trace for Windows)

DLL:System.Activities.dll

类名:ystem.Activities.Tracking.EtwTrackingParticipant



ETW是Windows里本地组件的一个追踪系统，由操作系统中的包括驱动程序、其它核心级代码等很多组件和服务调用。写入到ETW的数据可以通过定制代码或者诸如即将推出的Windows服务AppFabric等工具来使用。AppFabric将同ETW一起搜集ETW数据并将它存储到SQL数据库。