Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx35 / System.WorkflowServices / System / Workflow / Activities / ReceiveActivity.cs / 1305376 / ReceiveActivity.cs
//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------
namespace System.Workflow.Activities
{
using System;
using System.Reflection;
using System.Collections;
using System.Collections.ObjectModel;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.Drawing;
using System.Globalization;
using System.IdentityModel.Claims;
using System.Security.Permissions;
using System.ServiceModel;
using System.ServiceModel.Description;
using System.ServiceModel.Dispatcher;
using System.Workflow.Activities;
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Compiler;
using System.Workflow.ComponentModel.Design;
using System.Workflow.ComponentModel.Serialization;
using System.Workflow.Runtime;
using System.Xml;
[SR2Description(SR2DescriptionAttribute.ReceiveActivityDescription)]
[SR2Category(SR2CategoryAttribute.Standard)]
[Designer(typeof(ReceiveActivityDesigner), typeof(IDesigner))]
[ToolboxBitmap(typeof(ReceiveActivity), "Design.Resources.ReceiveActivity.png")]
[ActivityValidator(typeof(ReceiveActivityValidator))]
[Serializable]
public sealed class ReceiveActivity : SequenceActivity,
IEventActivity,
IActivityEventListener,
IServiceDescriptionBuilder
{
[SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes")]
public static readonly DependencyProperty FaultMessageProperty =
DependencyProperty.Register("FaultMessage",
typeof(FaultException),
typeof(ReceiveActivity),
new PropertyMetadata(null));
[SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes")]
public static readonly DependencyProperty OperationValidationEvent =
DependencyProperty.Register("OperationValidation",
typeof(EventHandler),
typeof(ReceiveActivity));
[SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes")]
public static readonly DependencyProperty WorkflowServiceAttributesProperty =
DependencyProperty.RegisterAttached("WorkflowServiceAttributes",
typeof(WorkflowServiceAttributes), typeof(ReceiveActivity),
new PropertyMetadata(null, DependencyPropertyOptions.Metadata,
ReceiveActivity.GetWorkflowServiceAttributesValueOverride, null),
typeof(WorkflowServiceAttributesDynamicPropertyValidator));
[SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes")]
internal static readonly DependencyProperty CanCreateInstanceProperty =
DependencyProperty.Register("CanCreateInstance",
typeof(bool),
typeof(ReceiveActivity),
new PropertyMetadata(false, DependencyPropertyOptions.Metadata));
[SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes")]
internal static readonly DependencyProperty ContextTokenProperty =
DependencyProperty.Register("ContextToken",
typeof(ContextToken),
typeof(ReceiveActivity),
new PropertyMetadata(null, DependencyPropertyOptions.Metadata));
[SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes")]
internal static readonly DependencyProperty ParameterBindingsProperty =
DependencyProperty.Register("ParameterBindings",
typeof(WorkflowParameterBindingCollection),
typeof(ReceiveActivity),
new PropertyMetadata(DependencyPropertyOptions.Metadata | DependencyPropertyOptions.ReadOnly));
[SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes")]
internal static readonly DependencyProperty ServiceOperationInfoProperty =
DependencyProperty.Register("ServiceOperationInfo",
typeof(OperationInfoBase),
typeof(ReceiveActivity),
new PropertyMetadata(DependencyPropertyOptions.Metadata));
private static readonly DependencyProperty QueueNameProperty =
DependencyProperty.Register("QueueName",
typeof(string),
typeof(ReceiveActivity));
private static readonly DependencyProperty RequestContextProperty =
DependencyProperty.Register("RequestContext",
typeof(WorkflowRequestContext),
typeof(ReceiveActivity));
static DependencyProperty QueueInitializationModeProperty =
DependencyProperty.Register("QueueInitializationMode",
typeof(QueueInitializationMode),
typeof(ReceiveActivity),
new PropertyMetadata(QueueInitializationMode.Standalone));
[NonSerialized]
private ReceiveOperationInfoHelper operationHelper;
private IActivityEventListener securityShim;
private IActivityEventListener validationShim;
[NonSerialized]
private static Hashtable requestContextsCache = Hashtable.Synchronized(new Hashtable());
private bool isContextCached;
public ReceiveActivity()
{
base.SetReadOnlyPropertyValue(ReceiveActivity.ParameterBindingsProperty,
new WorkflowParameterBindingCollection(this));
}
public ReceiveActivity(string name)
: base(name)
{
base.SetReadOnlyPropertyValue(ReceiveActivity.ParameterBindingsProperty,
new WorkflowParameterBindingCollection(this));
}
[SRCategory(SR2CategoryAttribute.Handlers)]
[SR2Description(SR2DescriptionAttribute.Receive_OperationValidation_Description)]
[MergableProperty(false)]
public event EventHandler OperationValidation
{
add
{
base.AddHandler(OperationValidationEvent, value);
}
remove
{
base.RemoveHandler(OperationValidationEvent, value);
}
}
[Browsable(true)]
[DefaultValue(false)]
[SR2Category(SR2CategoryAttribute.Activity)]
[SR2Description(SR2DescriptionAttribute.Receive_CanCreateInstance_Description)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public bool CanCreateInstance
{
get
{
return ((bool)(base.GetValue(ReceiveActivity.CanCreateInstanceProperty)));
}
set
{
base.SetValue(ReceiveActivity.CanCreateInstanceProperty, value);
}
}
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public IDictionary Context
{
get
{
if (this.ContextToken == null)
{
return ReceiveActivity.GetRootContext(this);
}
return ReceiveActivity.GetContext(this, this.ContextToken);
}
}
[DefaultValue(null)]
[MergableProperty(false)]
[RefreshProperties(RefreshProperties.All)]
[SR2Category(SR2CategoryAttribute.Activity)]
[SR2Description(SR2DescriptionAttribute.Receive_ContextToken_Description)]
[TypeConverter(typeof(ContextTokenTypeConverter))]
public ContextToken ContextToken
{
get
{
return base.GetValue(ContextTokenProperty) as ContextToken;
}
set
{
base.SetValue(ContextTokenProperty, value);
}
}
[Browsable(true)]
[DefaultValue(null)]
[SR2Category(SR2CategoryAttribute.Activity)]
[SR2Description(SR2DescriptionAttribute.Receive_FaultMessage_Description)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public FaultException FaultMessage
{
get
{
return ((FaultException) base.GetValue(ReceiveActivity.FaultMessageProperty));
}
set
{
base.SetValue(ReceiveActivity.FaultMessageProperty, value);
}
}
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
public WorkflowParameterBindingCollection ParameterBindings
{
get
{
return ((WorkflowParameterBindingCollection)(base.GetValue(ReceiveActivity.ParameterBindingsProperty)));
}
}
[Browsable(true)]
[SR2Category(SR2CategoryAttribute.Activity)]
[SR2Description(SR2DescriptionAttribute.Receive_OperationInfo_Description)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public OperationInfoBase ServiceOperationInfo
{
get
{
return ((OperationInfoBase)(base.GetValue(ReceiveActivity.ServiceOperationInfoProperty)));
}
set
{
OperationInfoBase currentValue = ((OperationInfoBase)(base.GetValue(ReceiveActivity.ServiceOperationInfoProperty)));
if (value != null && currentValue != value)
{
DependencyProperty ParentDependencyObjectProperty =
DependencyProperty.FromName("ParentDependencyObject", typeof(DependencyObject));
Activity currentParent = value.GetValue(ParentDependencyObjectProperty) as Activity;
if (currentParent != null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(
"value",
SR2.GetString(SR2.Error_OperationIsAlreadyAssociatedWithActivity,
value,
currentParent.QualifiedName));
}
if (currentValue != null)
{
currentValue.SetValue(ParentDependencyObjectProperty, null);
}
value.SetValue(ParentDependencyObjectProperty, this);
}
if (this.DesignMode && value is OperationInfo)
{
Activity rootActivity = this.RootActivity;
rootActivity.RemoveProperty(DynamicContractTypeBuilder.DynamicContractTypesProperty);
}
base.SetValue(ReceiveActivity.ServiceOperationInfoProperty, value);
}
}
[Browsable(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
internal WorkflowRequestContext RequestContext
{
get
{
return ((WorkflowRequestContext)(base.GetValue(ReceiveActivity.RequestContextProperty)));
}
set
{
base.SetValue(ReceiveActivity.RequestContextProperty, value);
}
}
IComparable IEventActivity.QueueName
{
get { return this.GetValue(ReceiveActivity.QueueNameProperty) as string; }
}
ReceiveOperationInfoHelper OperationHelper
{
get
{
if (this.operationHelper == null)
{
if (this.UserData.Contains(typeof(ReceiveOperationInfoHelper)))
{
this.operationHelper = this.UserData[typeof(ReceiveOperationInfoHelper)] as ReceiveOperationInfoHelper;
}
}
if (this.operationHelper == null)
{
this.operationHelper = new ReceiveOperationInfoHelper(this.Site, this);
this.UserData[typeof(ReceiveOperationInfoHelper)] = this.operationHelper;
}
return this.operationHelper;
}
}
private QueueInitializationMode QueueInitializationMode
{
get
{
return (QueueInitializationMode) base.GetValue(ReceiveActivity.QueueInitializationModeProperty);
}
set
{
base.SetValue(ReceiveActivity.QueueInitializationModeProperty, value);
}
}
public static IDictionary GetContext(Activity activity,
ContextToken contextToken)
{
if (activity == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("activity");
}
if (contextToken == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("contextToken");
}
if (contextToken.IsRootContext)
{
return GetRootContext(activity);
}
return GetContext(activity, contextToken.Name, contextToken.OwnerActivityName);
}
public static IDictionary GetContext(Activity activity,
string contextName,
string ownerActivityName)
{
if (activity == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("activity");
}
if (string.IsNullOrEmpty(contextName))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument("contextName",
SR2.GetString(SR2.Error_ArgumentValueNullOrEmptyString));
}
ReceiveContext receiveContext = ContextToken.GetReceiveContext(activity, contextName, ownerActivityName);
if (receiveContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_CannotFindReceiveContext, contextName)));
}
return receiveContext.Properties;
}
public static IDictionary GetRootContext(Activity activity)
{
if (activity == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("activity");
}
ReceiveContext receiveContext = ContextToken.GetRootReceiveContext(activity);
if (receiveContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_CannotFindReceiveContext, ContextToken.RootContextName)));
}
return receiveContext.Properties;
}
public static object GetWorkflowServiceAttributes(object dependencyObject)
{
if (dependencyObject == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("dependencyObject");
}
if (!(dependencyObject is Activity))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(
"dependencyObject",
SR2.GetString(SR2.Error_UnexpectedArgumentType, typeof(Activity).FullName));
}
return (dependencyObject as DependencyObject).GetValue(ReceiveActivity.WorkflowServiceAttributesProperty);
}
public static void SetWorkflowServiceAttributes(object dependencyObject,
object value)
{
if (dependencyObject == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("dependencyObject");
}
if (!(dependencyObject is Activity))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(
"dependencyObject",
SR2.GetString(SR2.Error_UnexpectedArgumentType, typeof(Activity).FullName));
}
(dependencyObject as DependencyObject).SetValue(ReceiveActivity.WorkflowServiceAttributesProperty, value);
}
void IActivityEventListener.OnEvent(object sender,
QueueEventArgs e)
{
if (sender == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("sender");
}
if (e == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("e");
}
ActivityExecutionContext executionContext = sender as ActivityExecutionContext;
if (executionContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new ArgumentException(SR2.GetString(SR2.Error_ArgumentTypeInvalid,
"sender",
typeof(ActivityExecutionContext))));
}
WorkflowQueuingService queuingService = executionContext.GetService();
if (queuingService == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.General_MissingService,
typeof(WorkflowQueuingService))));
}
WorkflowQueue workflowQueue = queuingService.GetWorkflowQueue(e.QueueName);
if (workflowQueue == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_QueueNotFound, e.QueueName)));
}
if (workflowQueue.Count != 0)
{
WorkflowRequestContext requestContext = workflowQueue.Peek() as WorkflowRequestContext;
if (requestContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_RequestContextUnavailable,
this.QualifiedName)));
}
if (ValidationShim.EvaluateSecurityConstraints(executionContext, this, requestContext))
{
workflowQueue.UnregisterForQueueItemAvailable(this);
this.RequestContext = workflowQueue.Dequeue() as WorkflowRequestContext;
CacheRequestContext(this.RequestContext);
if (this.QueueInitializationMode == QueueInitializationMode.Standalone)
{
if (this.securityShim != null)
{
workflowQueue.UnregisterForQueueItemArrived(this.securityShim);
this.securityShim = null;
}
workflowQueue.Enabled = false;
}
if (this.RequestContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_RequestContextUnavailable, this.QualifiedName)));
}
if (ExecuteActivity(this.RequestContext, executionContext) == ActivityExecutionStatus.Closed)
{
try
{
executionContext.CloseActivity();
}
finally
{
RemoveRequestContext();
}
}
}
else
{
workflowQueue.Dequeue();
try
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Verbose, 0,
"Workflow Instance {0}, receive activity {1} - message validation failed. Message will be discarded.",
this.WorkflowInstanceId, this.QualifiedName);
requestContext.SendFault(new FaultException(SR2.GetString(SR2.SecurityCheckFailed)), null);
}
catch (CommunicationException cex)
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 0,
"Workflow Instance {0}, receive activity {1} - failed to send fault for rejected message. Error: {2}",
this.WorkflowInstanceId, this.QualifiedName, cex);
}
catch (TimeoutException tex)
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 0,
"Workflow Instance {0}, receive activity {1} - failed to send fault for rejected message. Error: {2}",
this.WorkflowInstanceId, this.QualifiedName, tex);
}
if (requestContext.ContextProperties == null ||
!(requestContext.ContextProperties.Keys.Contains(WellKnownContextProperties.InstanceId)))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new FaultException(SR2.GetString(SR2.Error_FailedToValidateActivatingMessage, this.WorkflowInstanceId)));
}
}
}
}
void IEventActivity.Subscribe(ActivityExecutionContext parentContext,
IActivityEventListener parentEventHandler)
{
if (parentContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parentContext");
}
if (parentEventHandler == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parentEventHandler");
}
if (this.QueueInitializationMode == QueueInitializationMode.Standalone)
{
this.QueueInitializationMode = QueueInitializationMode.EventDriven;
}
// make sure that we are getting the proper queue
// even if that means creating a new queue
// given our conversation context and execution context.
//
WorkflowQueue workflowQueue = GetWorkflowQueue(parentContext);
if (workflowQueue != null)
{
if (this.QueueInitializationMode == QueueInitializationMode.EventDriven)
{
workflowQueue.Enabled = true;
}
if (this.validationShim == null)
{
this.validationShim = new ValidationShim(this, parentEventHandler);
}
if (this.securityShim == null)
{
this.securityShim = new SecurityShim(this);
}
workflowQueue.RegisterForQueueItemArrived(this.securityShim);
workflowQueue.RegisterForQueueItemAvailable(this.validationShim, this.QualifiedName);
}
return;
}
void IEventActivity.Unsubscribe(ActivityExecutionContext parentContext,
IActivityEventListener parentEventHandler)
{
if (parentContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parentContext");
}
if (parentEventHandler == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parentEventHandler");
}
WorkflowQueuingService queuingService = parentContext.GetService();
if (queuingService == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.General_MissingService,
typeof(WorkflowQueuingService))));
}
// get the queue using the queue name
// at this point the conversation context should have been re-initialized if necessary
//
WorkflowQueue workflowQueue = queuingService.GetWorkflowQueue(((IEventActivity) this).QueueName);
if (workflowQueue == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_QueueNotFound,
((IEventActivity) this).QueueName)));
}
if (this.securityShim != null)
{
workflowQueue.UnregisterForQueueItemArrived(this.securityShim);
this.securityShim = null;
}
if (this.validationShim != null)
{
workflowQueue.UnregisterForQueueItemAvailable(this.validationShim);
}
if (this.QueueInitializationMode == QueueInitializationMode.EventDriven)
{
workflowQueue.Enabled = false;
}
return;
}
[SuppressMessage("Microsoft.Security", "CA2103")] // Review imperative security, because constructing PrincipalPermission
void IServiceDescriptionBuilder.BuildServiceDescription(ServiceDescriptionContext context)
{
if (context == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context");
}
if (!this.Enabled)
{
return;
}
OperationInfoBase serviceOperationInfo = this.ServiceOperationInfo;
if (serviceOperationInfo == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_ServiceOperationInfoNotSpecified, this.Name)));
}
// set the workflow service behavior
//
IServiceDescriptionBuilder serviceAttributes =
GetWorkflowServiceAttributes(this.RootActivity) as IServiceDescriptionBuilder;
if (serviceAttributes != null)
{
serviceAttributes.BuildServiceDescription(context);
}
if (context.ReflectedContracts == null || context.WorkflowOperationBehaviors == null)
{
return;
}
// add contract types and configure the operation behavior
//
Type contractType = serviceOperationInfo.GetContractType(((IComponent) this).Site);
List interfaces = ServiceOperationHelpers.GetContracts(contractType);
for (int i = 0; i < interfaces.Count; i++)
{
Type interfaceType = interfaces[i];
ContractDescription contractDescription = null;
if (!context.ReflectedContracts.Contains(interfaceType))
{
contractDescription = ContractDescription.GetContract(interfaceType);
ServiceOperationHelpers.SetWorkflowOperationBehavior(contractDescription, context);
context.Contracts.Add(contractDescription.ConfigurationName, contractDescription);
context.ReflectedContracts.Add(contractDescription.ContractType);
}
else
{
contractDescription = context.Contracts[ContractDescription.GetContract(interfaceType).ConfigurationName];
}
Collection inheritedContractDescriptions = contractDescription.GetInheritedContracts();
for (int j = 0; j < inheritedContractDescriptions.Count; j++)
{
ContractDescription inheritedContractDescription = inheritedContractDescriptions[j];
if (!context.ReflectedContracts.Contains(inheritedContractDescription.ContractType))
{
ServiceOperationHelpers.SetWorkflowOperationBehavior(inheritedContractDescription, context);
context.Contracts.Add(inheritedContractDescription.ConfigurationName, inheritedContractDescription);
context.ReflectedContracts.Add(inheritedContractDescription.ContractType);
}
}
}
Type operationDeclaringType = null;
MethodInfo methodInfo = serviceOperationInfo.GetMethodInfo(((IComponent) this).Site);
if (methodInfo != null)
{
operationDeclaringType = methodInfo.DeclaringType;
}
if (operationDeclaringType != null)
{
WorkflowOperationBehavior behavior = null;
KeyValuePair operationKey =
new KeyValuePair(operationDeclaringType, serviceOperationInfo.Name);
if (context.WorkflowOperationBehaviors.TryGetValue(operationKey, out behavior) && behavior != null)
{
if (!behavior.CanCreateInstance && this.CanCreateInstance)
{
behavior.CanCreateInstance = true;
}
if (!string.IsNullOrEmpty(serviceOperationInfo.PrincipalPermissionRole)
|| !string.IsNullOrEmpty(serviceOperationInfo.PrincipalPermissionName))
{
if (behavior.ServiceAuthorizationManager == null)
{
PrincipalPermission permission =
new PrincipalPermission(serviceOperationInfo.PrincipalPermissionName,
serviceOperationInfo.PrincipalPermissionRole, true);
PrincipalPermissionServiceAuthorizationManager authManager
= new PrincipalPermissionServiceAuthorizationManager(permission);
behavior.ServiceAuthorizationManager = authManager;
}
}
}
}
}
protected internal override void Initialize(IServiceProvider provider)
{
if (provider == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("provider");
}
ContextToken.Register(this, this.WorkflowInstanceId);
SetQueueInitializationMode();
// make sure that we are getting the proper queue
// even if that means creating a new queue
// given our conversation context and execution context.
//
WorkflowQueue workflowQueue = GetWorkflowQueue(provider);
if (workflowQueue == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_QueueNotFound,
((IEventActivity) this).QueueName)));
}
if (this.QueueInitializationMode == QueueInitializationMode.StateMachine)
{
workflowQueue.Enabled = true;
}
base.Initialize(provider);
}
internal void GetParameterPropertyDescriptors(IDictionary properties)
{
if (properties == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("properties");
}
if (((IComponent) this).Site == null)
{
return;
}
OperationInfoBase serviceOperationInfo = this.ServiceOperationInfo;
if (serviceOperationInfo != null)
{
MethodInfo methodInfo = serviceOperationInfo.GetMethodInfo(((IComponent) this).Site);
if (methodInfo != null)
{
ArrayList paramInfo = new ArrayList(methodInfo.GetParameters());
if (!(methodInfo.ReturnType == typeof(void)))
{
paramInfo.Add(methodInfo.ReturnParameter);
}
foreach (ParameterInfo param in paramInfo)
{
if (param.ParameterType != null)
{
PropertyDescriptor prop =
new ParameterInfoBasedPropertyDescriptor(typeof(ReceiveActivity),
param, true, DesignOnlyAttribute.Yes);
properties[prop.Name] = prop;
}
}
}
}
}
protected override ActivityExecutionStatus Cancel(ActivityExecutionContext executionContext)
{
try
{
if (executionContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("executionContext");
}
WorkflowQueuingService queuingService = executionContext.GetService();
if (queuingService == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.General_MissingService,
typeof(WorkflowQueuingService))));
}
WorkflowQueue workflowQueue = GetWorkflowQueue(executionContext);
if (workflowQueue == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_QueueNotFound,
((IEventActivity)this).QueueName)));
}
workflowQueue.UnregisterForQueueItemAvailable(this);
if (this.QueueInitializationMode == QueueInitializationMode.Standalone)
{
if (this.securityShim != null)
{
workflowQueue.UnregisterForQueueItemArrived(this.securityShim);
this.securityShim = null;
}
workflowQueue.Enabled = false;
}
}
finally
{
RemoveRequestContext();
}
return base.Cancel(executionContext);
}
protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext)
{
if (executionContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("executionContext");
}
WorkflowQueuingService queuingService = executionContext.GetService();
if (queuingService == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.General_MissingService,
typeof(WorkflowQueuingService))));
}
// make sure that we are getting the proper queue
// even if that means creating a new queue
// given our conversation context and execution context.
//
WorkflowQueue workflowQueue = GetWorkflowQueue(executionContext);
if (workflowQueue == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_QueueNotFound,
((IEventActivity) this).QueueName)));
}
if (this.QueueInitializationMode == QueueInitializationMode.Standalone && workflowQueue.Count == 0)
{
workflowQueue.Enabled = true;
if (this.securityShim == null)
{
this.securityShim = new SecurityShim(this);
}
workflowQueue.RegisterForQueueItemArrived(this.securityShim);
workflowQueue.RegisterForQueueItemAvailable(this, this.QualifiedName);
return ActivityExecutionStatus.Executing;
}
else if (workflowQueue.Count == 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_RequestContextUnavailable,
this.QualifiedName)));
}
WorkflowRequestContext requestContext = workflowQueue.Dequeue() as WorkflowRequestContext;
if (requestContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_RequestContextUnavailable,
this.QualifiedName)));
}
else
{
if (this.validationShim != null)
{
this.RequestContext = requestContext;
CacheRequestContext(requestContext);
}
else if (ValidationShim.EvaluateSecurityConstraints(executionContext, this, requestContext) == true)
{
this.RequestContext = requestContext;
CacheRequestContext(requestContext);
if (this.QueueInitializationMode == QueueInitializationMode.Standalone)
{
workflowQueue.Enabled = false;
}
}
else
{
try
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Verbose, 0,
"Workflow Instance {0}, receive activity {1} - message validation failed. Message will be discarded.",
this.WorkflowInstanceId, this.QualifiedName);
requestContext.SendFault(new FaultException(SR2.GetString(SR2.SecurityCheckFailed)), null);
}
catch (CommunicationException cex)
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 0,
"Workflow Instance {0}, receive activity {1} - failed to send fault for rejected message. Error: {2}",
this.WorkflowInstanceId, this.QualifiedName, cex);
}
catch (TimeoutException tex)
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 0,
"Workflow Instance {0}, receive activity {1} - failed to send fault for rejected message. Error: {2}",
this.WorkflowInstanceId, this.QualifiedName, tex);
}
if (requestContext.ContextProperties == null ||
!(requestContext.ContextProperties.Keys.Contains(WellKnownContextProperties.InstanceId)))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new FaultException(SR2.GetString(SR2.Error_FailedToValidateActivatingMessage, this.WorkflowInstanceId)));
}
if (this.QueueInitializationMode == QueueInitializationMode.Standalone)
{
if (this.securityShim == null)
{
this.securityShim = new SecurityShim(this);
}
workflowQueue.RegisterForQueueItemArrived(this.securityShim);
}
workflowQueue.RegisterForQueueItemAvailable(this, this.QualifiedName);
return ActivityExecutionStatus.Executing;
}
}
return ExecuteActivity(this.RequestContext, executionContext);
}
[SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes",
Justification = "Supress any exceptions thrown by SendFault to avoid calling HandleFault infinitely.")]
protected override ActivityExecutionStatus HandleFault(ActivityExecutionContext executionContext,
Exception exception)
{
try
{
if (executionContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("executionContext");
}
if (exception == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("exception");
}
if (executionContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("executionContext");
}
WorkflowQueuingService queuingService = executionContext.GetService();
if (queuingService == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.General_MissingService,
typeof(WorkflowQueuingService))));
}
WorkflowQueue workflowQueue = GetWorkflowQueue(executionContext);
if (workflowQueue == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_QueueNotFound,
((IEventActivity)this).QueueName)));
}
workflowQueue.UnregisterForQueueItemAvailable(this);
if (this.QueueInitializationMode == QueueInitializationMode.Standalone)
{
if (this.securityShim != null)
{
workflowQueue.UnregisterForQueueItemArrived(this.securityShim);
this.securityShim = null;
}
workflowQueue.Enabled = false;
}
RestoreRequestContext();
if (this.RequestContext != null)
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Verbose, 0,
"Workflow Instance {0}, receive activity {1} - sending fault response message",
this.WorkflowInstanceId, this.QualifiedName);
if (this.FaultMessage != null)
{
try
{
this.RequestContext.SendFault(this.FaultMessage, null);
}
catch
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 0,
"Workflow Instance {0}, receive activity {1} - failed to send response fault message.",
this.WorkflowInstanceId, this.QualifiedName);
}
}
else
{
try
{
this.RequestContext.SendFault(exception, null);
}
catch
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 0,
"Workflow Instance {0}, receive activity {1} - failed to send response fault message.",
this.WorkflowInstanceId, this.QualifiedName);
}
}
}
}
finally
{
RemoveRequestContext();
}
return base.HandleFault(executionContext, exception);
}
protected override void InitializeProperties()
{
OperationInfoBase serviceOperationInfo = this.ServiceOperationInfo;
if (serviceOperationInfo == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_ServiceOperationInfoNotSpecified, this.Name)));
}
OperationParameterInfoCollection parameters = null;
Activity definitionRoot = base.RootActivity.GetValue(Activity.WorkflowDefinitionProperty) as Activity;
if (definitionRoot != null)
{
ReceiveActivity definition = definitionRoot.GetActivityByName(this.QualifiedName, true) as ReceiveActivity;
if ((definition != null) && definition.UserData.Contains(typeof(OperationParameterInfoCollection)))
{
parameters = definition.UserData[typeof(OperationParameterInfoCollection)] as OperationParameterInfoCollection;
}
}
if (parameters == null)
{
parameters = serviceOperationInfo.GetParameters(this.Site);
this.UserData[typeof(OperationParameterInfoCollection)] = parameters;
}
WorkflowParameterBindingCollection bindings = this.ParameterBindings;
foreach (OperationParameterInfo parameter in parameters)
{
if (!bindings.Contains(parameter.Name))
{
bindings.Add(new WorkflowParameterBinding(parameter.Name));
}
}
base.InitializeProperties();
}
protected override void OnSequenceComplete(ActivityExecutionContext executionContext)
{
if (executionContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("executionContext");
}
try
{
RestoreRequestContext();
if (this.RequestContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_RequestContextUnavailable,
this.QualifiedName)));
}
object returnValue;
object[] outputValues;
if (this.FaultMessage != null)
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Verbose, 0,
"Workflow Instance {0}, receive activity {1} - sending fault response message",
this.WorkflowInstanceId, this.QualifiedName);
try
{
this.RequestContext.SendFault(this.FaultMessage, null);
}
catch (CommunicationException cex)
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 0,
"Workflow Instance {0}, receive activity {1} - failed to send fault response message. Error: {2}",
this.WorkflowInstanceId, this.QualifiedName, cex);
throw;
}
catch (TimeoutException tex)
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 0,
"Workflow Instance {0}, receive activity {1} - failed to send fault response message. Error: {2}",
this.WorkflowInstanceId, this.QualifiedName, tex);
throw;
}
}
else if (!this.OperationHelper.IsOneWay)
{
returnValue = this.OperationHelper.GetOutputs(this, out outputValues);
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Verbose, 0,
"Workflow Instance {0}, receive activity {1} - sending response message",
this.WorkflowInstanceId, this.QualifiedName);
try
{
this.RequestContext.SendReply(returnValue, outputValues, null);
}
catch (CommunicationException cex)
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 0,
"Workflow Instance {0}, receive activity {1} - failed to send response message. Error: {2}",
this.WorkflowInstanceId, this.QualifiedName, cex);
throw;
}
catch (TimeoutException tex)
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Error, 0,
"Workflow Instance {0}, receive activity {1} - failed to send response message. Error: {2}",
this.WorkflowInstanceId, this.QualifiedName, tex);
throw;
}
}
else
{
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Verbose, 0,
"Workflow Instance {0}, receive activity {1} - completing one way operation",
this.WorkflowInstanceId, this.QualifiedName);
this.RequestContext.SetOperationCompleted();
}
base.OnSequenceComplete(executionContext);
// Null out the request context to reduce serialization size of the activity.
this.RequestContext = null;
}
finally
{
RemoveRequestContext();
}
}
static object GetWorkflowServiceAttributesValueOverride(object dependencyObject)
{
if (dependencyObject == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("dependencyObject");
}
if (!(dependencyObject is Activity))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(
"dependencyObject",
SR2.GetString(SR2.Error_UnexpectedArgumentType, typeof(Activity).FullName));
}
Activity activity = dependencyObject as Activity;
if (activity.GetValueBase(ReceiveActivity.WorkflowServiceAttributesProperty) == null)
{
if (activity.DesignMode)
{
WorkflowServiceAttributes workflowServiceAttribsValue = new WorkflowServiceAttributes();
Activity rootActivity = activity.RootActivity;
if (rootActivity != null)
{
string fullClassName = (String) rootActivity.GetValue(WorkflowMarkupSerializer.XClassProperty);
if (!String.IsNullOrEmpty(fullClassName))
{
string namespaceName;
string className;
Helpers.GetNamespaceAndClassName(fullClassName, out namespaceName, out className);
workflowServiceAttribsValue.ConfigurationName = fullClassName;
workflowServiceAttribsValue.Name = className;
}
}
activity.SetValue(ReceiveActivity.WorkflowServiceAttributesProperty, workflowServiceAttribsValue);
return workflowServiceAttribsValue;
}
}
return activity.GetValueBase(ReceiveActivity.WorkflowServiceAttributesProperty);
}
private ActivityExecutionStatus ExecuteActivity(WorkflowRequestContext requestContext,
ActivityExecutionContext executionContext)
{
if (requestContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("requestContext");
}
if (executionContext == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("executionContext");
}
System.Workflow.Runtime.WorkflowTrace.Runtime.TraceEvent(TraceEventType.Verbose, 0,
"Workflow Instance {0}, receive activity {1} - received message",
this.WorkflowInstanceId, this.QualifiedName);
this.OperationHelper.PopulateInputs(this, requestContext.Inputs);
return base.Execute(executionContext);
}
private WorkflowQueue GetWorkflowQueue(IServiceProvider provider)
{
if (provider == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("provider");
}
if (this.ServiceOperationInfo == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_ServiceOperationInfoNotSpecified, this.Name)));
}
WorkflowQueuingService queuingService =
provider.GetService(typeof(WorkflowQueuingService)) as WorkflowQueuingService;
if (queuingService == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.General_MissingService,
typeof(WorkflowQueuingService))));
}
WorkflowQueue workflowQueue = null;
string queueName = this.OperationHelper.GetWorkflowQueueName(this.Context);
this.SetValue(QueueNameProperty, queueName);
if (!queuingService.Exists(queueName))
{
workflowQueue = queuingService.CreateWorkflowQueue(queueName, false);
workflowQueue.Enabled = false;
}
else
{
workflowQueue = queuingService.GetWorkflowQueue(queueName);
}
return workflowQueue;
}
private void SetQueueInitializationMode()
{
if (this.parent != null && this.parent is EventDrivenActivity)
{
if (this.parent.parent != null && this.parent.parent is StateActivity)
{
this.QueueInitializationMode = QueueInitializationMode.StateMachine;
}
}
}
private void CacheRequestContext(WorkflowRequestContext requestContext)
{
string keyValue = WorkflowEnvironment.WorkflowInstanceId.ToString() + ":" +
this.GetValue(ReceiveActivity.QueueNameProperty) as string;
requestContextsCache[keyValue] = requestContext;
this.isContextCached = true;
}
private void RestoreRequestContext()
{
string keyValue = WorkflowEnvironment.WorkflowInstanceId.ToString() + ":"
+ this.GetValue(ReceiveActivity.QueueNameProperty) as string;
if (requestContextsCache.ContainsKey(keyValue))
{
this.RequestContext = requestContextsCache[keyValue] as WorkflowRequestContext;
}
}
private void RemoveRequestContext()
{
requestContextsCache.Remove(WorkflowEnvironment.WorkflowInstanceId.ToString() + ":" +
this.GetValue(ReceiveActivity.QueueNameProperty) as string);
}
protected override void Dispose(bool disposing)
{
try
{
if (disposing && this.isContextCached)
{
RemoveRequestContext();
}
}
finally
{
base.Dispose(disposing);
}
}
[Serializable]
class ReceiveOperationInfoHelper
{
string baseQueueName;
bool hasReturnValue = false;
IList> inputParameters;
bool isOneWay = false;
IDictionary notNullableParameters;
bool nullableReturnValue = true;
string operationName;
IList> outputParameters;
string returnTypeName;
public ReceiveOperationInfoHelper(IServiceProvider serviceProvider, ReceiveActivity activity)
{
outputParameters = new List>();
inputParameters = new List>();
notNullableParameters = new Dictionary();
hasReturnValue = false;
nullableReturnValue = true;
if (activity == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("activity");
}
OperationInfoBase serviceOperationInfo = activity.ServiceOperationInfo;
if (serviceOperationInfo == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_ServiceOperationInfoNotSpecified, activity.Name)));
}
MethodInfo methodInfo = serviceOperationInfo.GetMethodInfo(serviceProvider);
if (methodInfo == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_MethodInfoNotAvailable, activity.Name)));
}
if (methodInfo.ReturnType != null && methodInfo.ReturnType != typeof(void))
{
hasReturnValue = true;
this.returnTypeName = methodInfo.ReturnType.FullName;
nullableReturnValue =
!((methodInfo.ReturnType.IsPrimitive || methodInfo.ReturnType.IsEnum || methodInfo.ReturnType.IsValueType) && !ServiceOperationHelpers.IsNullableType(methodInfo.ReturnType));
}
foreach (ParameterInfo parameter in methodInfo.GetParameters())
{
if (parameter.ParameterType.IsByRef ||
parameter.IsOut || (parameter.IsIn && parameter.IsOut))
{
outputParameters.Add(new KeyValuePair(parameter.Position, parameter.Name));
if (parameter.ParameterType.IsByRef &&
parameter.ParameterType.GetElementType().IsValueType &&
!ServiceOperationHelpers.IsNullableType(parameter.ParameterType))
{
notNullableParameters.Add(parameter.Position, parameter.ParameterType);
}
}
if (!parameter.IsOut || (parameter.IsIn && parameter.IsOut))
{
inputParameters.Add(new KeyValuePair(parameter.Position, parameter.Name));
}
}
this.operationName = serviceOperationInfo.Name;
this.baseQueueName = QueueNameHelper.Create(methodInfo.DeclaringType, this.operationName);
object[] operationContractAttribs = methodInfo.GetCustomAttributes(typeof(OperationContractAttribute), true);
if (operationContractAttribs != null && operationContractAttribs.Length > 0)
{
if (operationContractAttribs[0] is OperationContractAttribute)
{
this.isOneWay = ((OperationContractAttribute) operationContractAttribs[0]).IsOneWay;
}
}
}
public bool IsOneWay
{
get
{
return this.isOneWay;
}
}
public object GetOutputs(ReceiveActivity activity, out object[] outputs)
{
if (activity == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("activity");
}
outputs = new object[outputParameters.Count];
object returnValue = null;
WorkflowParameterBindingCollection bindings = activity.ParameterBindings;
for (int index = 0; index < outputParameters.Count; ++index)
{
KeyValuePair parameterInfo = outputParameters[index];
if (bindings[parameterInfo.Value].Value == null &&
this.notNullableParameters.Keys.Contains(parameterInfo.Key))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_ReceiveActivityInvalidParameterValue,
activity.Name, parameterInfo.Value, this.notNullableParameters[parameterInfo.Key])));
}
outputs[index] = bindings[parameterInfo.Value].Value;
}
if (hasReturnValue)
{
if (bindings["(ReturnValue)"].Value == null &&
!this.nullableReturnValue)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new InvalidOperationException(SR2.GetString(SR2.Error_ReceiveActivityInvalidReturnValue,
activity.Name, this.returnTypeName)));
}
returnValue = bindings["(ReturnValue)"].Value;
}
return returnValue;
}
public string GetWorkflowQueueName(IDictionary context)
{
return QueueNameHelper.Create(this.baseQueueName, context);
}
public void PopulateInputs(ReceiveActivity activity, ReadOnlyCollection
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