Code:
/ WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / TransactionBridge / Microsoft / Transactions / Wsat / StateMachines / StateMachine.cs / 1 / StateMachine.cs
//------------------------------------------------------------------------------ // Copyright (c) Microsoft Corporation. All rights reserved. //----------------------------------------------------------------------------- // This file contains definitions and default implementations for the various // state machines in the protocol provider using System; using System.Collections; using System.Diagnostics; using System.Text; using Microsoft.Transactions.Bridge; using Microsoft.Transactions.Wsat.InputOutput; using Microsoft.Transactions.Wsat.Messaging; using Microsoft.Transactions.Wsat.Protocol; namespace Microsoft.Transactions.Wsat.StateMachines { abstract partial class StateMachine : ITimerRecipient { protected TransactionEnlistment enlistment; protected ProtocolState state; protected SynchronizationManager synchronization; State current; StateMachineHistory history; protected StateMachine(TransactionEnlistment enlistment) { this.enlistment = enlistment; this.state = enlistment.State; this.synchronization = new SynchronizationManager(this); if (DebugTrace.Warning || DiagnosticUtility.ShouldTraceWarning) { this.history = new StateMachineHistory(); } } public override string ToString() { return this.GetType().Name; } public State State { get { return this.current; } } public abstract State AbortedState { get; } public TransactionEnlistment Enlistment { get { return this.enlistment; } } public StateMachineHistory History { get { return this.history; } } public Guid UniqueId { get { return this.enlistment.EnlistmentId; } } public void Enqueue (SynchronizationEvent e) { this.synchronization.Enqueue (e); } public void Dispatch (SynchronizationEvent e) { if (this.history != null) { this.history.AddEvent (e.ToString()); } e.Execute(this); } public void ChangeState (State newState) { if (this.history != null) { this.history.AddState (newState.ToString()); } // Deliver leave event if (this.current != null) { if (DebugTrace.Info) { DebugTrace.TxTrace(TraceLevel.Info, this.enlistment.EnlistmentId, "Leaving [{0}]", this.current); } this.current.Leave (this); } if (DebugTrace.Info) { DebugTrace.TxTrace (TraceLevel.Info, this.enlistment.EnlistmentId, "Entering [{0}]", newState); } // Set current state this.current = newState; // Deliver enter event this.current.Enter (this); } public void TraceInvalidEvent (SynchronizationEvent e, bool fatal) { // Debug tracing if (DebugTrace.Error) { if (this.history != null) { DebugTrace.TxTrace ( TraceLevel.Error, e.Enlistment.EnlistmentId, "The {0} was not expected by the {1} state. The state machine history history follows:\n\n{2}", e, this.current, this.history.ToString() ); } else { DebugTrace.TxTrace ( TraceLevel.Error, e.Enlistment.EnlistmentId, "The {0} was not expected by the {1} state", e, this.current ); } } // Diagnostic tracing if (fatal) { FatalUnexpectedStateMachineEventRecord.TraceAndLog ( this.enlistment.EnlistmentId, this.enlistment.Enlistment.RemoteTransactionId, this.ToString(), this.current.ToString(), this.history, e.ToString(), null // It would have been nice to have added context-sensitive details here. // Maybe next time... See MB 19006 for more details ); } else { NonFatalUnexpectedStateMachineEventRecord.TraceAndLog ( this.enlistment.EnlistmentId, this.enlistment.Enlistment.RemoteTransactionId, this.ToString(), this.current.ToString(), this.history, e.ToString(), null // It would have been nice to have added context-sensitive details here. // Maybe next time... See MB 19006 for more details ); } } public virtual void Cleanup() { this.enlistment.OnStateMachineComplete(); } } abstract class ParticipantStateMachine : StateMachine { ParticipantEnlistment participant; public ParticipantStateMachine (ParticipantEnlistment participant) : base (participant) { this.participant = participant; } protected override void OnTimer(TimerProfile profile) { base.OnTimer(profile); this.synchronization.Enqueue(new TimerParticipantEvent(participant, profile)); } } class DurableStateMachine : ParticipantStateMachine { public DurableStateMachine (ParticipantEnlistment participant) : base (participant) {} public override State AbortedState { get { return state.States.DurableAborted; } } } class VolatileStateMachine : ParticipantStateMachine { public VolatileStateMachine (ParticipantEnlistment participant) : base (participant) {} public override State AbortedState { get { return state.States.VolatileAborted; } } } class SubordinateStateMachine : StateMachine { public SubordinateStateMachine(ParticipantEnlistment participant) : base(participant) { } public override State AbortedState { get { return state.States.SubordinateFinished; } } } class CompletionStateMachine : StateMachine { public CompletionStateMachine (CompletionEnlistment completion) : base (completion) { } public override State AbortedState { get { return state.States.CompletionAborted; } } } class CoordinatorStateMachine : StateMachine { CoordinatorEnlistment coordinator; public CoordinatorStateMachine (CoordinatorEnlistment coordinator) : base (coordinator) { this.coordinator = coordinator; } public override State AbortedState { get { return state.States.CoordinatorAborted; } } protected override void OnTimer(TimerProfile profile) { base.OnTimer(profile); this.synchronization.Enqueue (new TimerCoordinatorEvent (this.coordinator, profile)); } } class TransactionContextStateMachine : StateMachine { TransactionContextManager contextManager; public TransactionContextStateMachine(TransactionContextManager contextManager) : base(contextManager) { this.contextManager = contextManager; } public override State AbortedState { get { return state.States.TransactionContextFinished; } } public TransactionContextManager ContextManager { get { return this.contextManager; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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