Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Activities / LocalService / MethodMessage.cs / 1305376 / MethodMessage.cs
#pragma warning disable 1634, 1691 using System; using System.Diagnostics; using System.Collections; using System.Runtime.Serialization; using System.Runtime.Serialization.Formatters.Binary; using System.Collections.Generic; using System.Reflection; using System.Runtime.Remoting.Messaging; using System.Workflow.Runtime; using System.Security.Principal; using System.Threading; using System.Globalization; namespace System.Workflow.Activities { internal interface IMethodResponseMessage { void SendResponse(ICollection outArgs); void SendException(Exception exception); Exception Exception { get;} ICollection OutArgs { get;} } [Serializable] internal sealed class MethodMessage : IMethodMessage, IMethodResponseMessage { [NonSerialized] Type interfaceType; [NonSerialized] string methodName; [NonSerialized] object[] args; [NonSerialized] ManualResetEvent returnValueSignalEvent; object[] clonedArgs; LogicalCallContext callContext; ICollection outArgs; Exception exception; [NonSerialized] bool responseSet = false; Guid callbackCookie; [NonSerialized] MethodMessage previousMessage = null; static DictionarystaticMethodMessageMap = new Dictionary (); static Object syncRoot = new Object(); internal MethodMessage(Type interfaceType, string methodName, object[] args, String identity) : this(interfaceType, methodName, args, identity, false) { } internal MethodMessage(Type interfaceType, string methodName, object[] args, String identity, bool responseRequired) { this.interfaceType = interfaceType; this.methodName = methodName; this.args = args; callContext = GetLogicalCallContext(); if(responseRequired) returnValueSignalEvent = new ManualResetEvent(false); PopulateIdentity(callContext, identity); Clone(); } [OnSerializing] void OnSerializing(StreamingContext context) { if (returnValueSignalEvent != null && !responseSet) { callbackCookie = Guid.NewGuid(); lock (syncRoot) { staticMethodMessageMap.Add(callbackCookie, previousMessage ?? this); } } } [OnDeserialized] void OnDeserialized(StreamingContext context) { if (callbackCookie != Guid.Empty) { lock (syncRoot) { if (staticMethodMessageMap.TryGetValue(callbackCookie, out previousMessage)) staticMethodMessageMap.Remove(callbackCookie); } if (previousMessage != null) { this.responseSet = previousMessage.responseSet; this.returnValueSignalEvent = previousMessage.returnValueSignalEvent; } } callbackCookie = Guid.Empty; } string IMethodMessage.GetArgName(int index) { throw new NotImplementedException(); } object IMethodMessage.GetArg(int argNum) { return this.clonedArgs[argNum]; } string IMethodMessage.Uri { #pragma warning disable 56503 // not implemented get { throw new NotImplementedException(); } #pragma warning restore 56503 } string IMethodMessage.MethodName { get{return this.methodName;} } string IMethodMessage.TypeName { get { return (this.interfaceType.ToString()); } } object IMethodMessage.MethodSignature { #pragma warning disable 56503 get { throw new NotImplementedException(); } #pragma warning restore 56503 } object[] IMethodMessage.Args { get { return this.clonedArgs; } } object Clone() { object[] clones = new object[this.args.Length]; for (int i = 0; i < this.args.Length; i++ ) { clones[i] = Clone(this.args[i]); } this.clonedArgs = clones; return clones; } object Clone(object source) { if (source == null || source.GetType().IsValueType) return source; ICloneable clone = source as ICloneable; if (clone != null) return clone.Clone(); BinaryFormatter formatter = new BinaryFormatter(); System.IO.MemoryStream stream = new System.IO.MemoryStream(1024); try { formatter.Serialize(stream, source); } catch (SerializationException e) { throw new InvalidOperationException(SR.GetString(SR.Error_EventArgumentSerializationException), e); } stream.Position = 0; object cloned = formatter.Deserialize(stream); return cloned; } int IMethodMessage.ArgCount { get { return this.clonedArgs.Length; } } bool IMethodMessage.HasVarArgs { #pragma warning disable 56503 get { throw new NotImplementedException(); } #pragma warning restore 56503 } LogicalCallContext IMethodMessage.LogicalCallContext { get{return callContext;} } MethodBase IMethodMessage.MethodBase { #pragma warning disable 56503 get { throw new NotImplementedException(); } #pragma warning restore 56503 } IDictionary System.Runtime.Remoting.Messaging.IMessage.Properties { #pragma warning disable 56503 get { throw new NotImplementedException(); } #pragma warning restore 56503 } void PopulateIdentity(LogicalCallContext callContext, String identity) { callContext.SetData(IdentityContextData.IdentityContext, new IdentityContextData(identity)); } static LogicalCallContext singletonCallContext; static Object syncObject = new Object(); static LogicalCallContext GetLogicalCallContext() { lock (syncObject) { if (singletonCallContext == null) { CallContextProxy contextProxy = new CallContextProxy(typeof(IDisposable)); IDisposable disposable = (IDisposable)contextProxy.GetTransparentProxy(); disposable.Dispose(); singletonCallContext = contextProxy.CallContext; } return singletonCallContext.Clone() as LogicalCallContext; } } #region IMethodResponseMessage implementation internal IMethodResponseMessage WaitForResponseMessage() { // todo wait for certain timeout this.returnValueSignalEvent.WaitOne(); this.returnValueSignalEvent = null; return this; } public void SendResponse(ICollection outArgs) { if (this.returnValueSignalEvent == null) throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, SR.GetString(SR.Error_WorkflowInstanceDehydratedBeforeSendingResponse))); if (!this.responseSet) { this.OutArgs = outArgs; this.returnValueSignalEvent.Set(); this.responseSet = true; } } public void SendException(Exception exception) { if (this.returnValueSignalEvent == null) throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, SR.GetString(SR.Error_WorkflowInstanceDehydratedBeforeSendingResponse))); if (!this.responseSet) { this.Exception = exception; this.returnValueSignalEvent.Set(); this.responseSet = true; } } public Exception Exception { get { return this.exception; } private set { if (previousMessage != null) previousMessage.Exception = value; this.exception = value; } } public ICollection OutArgs { get { return this.outArgs; } private set { if (previousMessage != null) previousMessage.OutArgs = value; this.outArgs = value; } } #endregion private sealed class CallContextProxy : System.Runtime.Remoting.Proxies.RealProxy { LogicalCallContext callContext; internal LogicalCallContext CallContext { get { return callContext; } } internal CallContextProxy(Type proxiedType) : base(proxiedType) { } public override System.Runtime.Remoting.Messaging.IMessage Invoke(System.Runtime.Remoting.Messaging.IMessage msg) { IMethodCallMessage methodCallMessage = msg as IMethodCallMessage; this.callContext = methodCallMessage.LogicalCallContext.Clone() as LogicalCallContext; return new ReturnMessage(null, null, 0, methodCallMessage.LogicalCallContext, methodCallMessage); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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