Exemplo n.º 1
0
        internal unsafe void ToNative(PinCollection pin, ref NativeTypes.FABRIC_SERVICE_CORRELATION_DESCRIPTION description)
        {
            description.ServiceName = pin.AddObject(this.ServiceName);

            switch (this.Scheme)
            {
            case ServiceCorrelationScheme.Affinity:
                description.Scheme = NativeTypes.FABRIC_SERVICE_CORRELATION_SCHEME.FABRIC_SERVICE_CORRELATION_SCHEME_AFFINITY;
                break;

            case ServiceCorrelationScheme.AlignedAffinity:
                description.Scheme = NativeTypes.FABRIC_SERVICE_CORRELATION_SCHEME.FABRIC_SERVICE_CORRELATION_SCHEME_ALIGNED_AFFINITY;
                break;

            case ServiceCorrelationScheme.NonAlignedAffinity:
                description.Scheme = NativeTypes.FABRIC_SERVICE_CORRELATION_SCHEME.FABRIC_SERVICE_CORRELATION_SCHEME_NONALIGNED_AFFINITY;
                break;

            default:
                ReleaseAssert.Failfast(string.Format(CultureInfo.CurrentCulture, StringResources.Error_InvalidServiceCorrelationScheme_Formatted, this.Scheme));
                break;
            }
        }
Exemplo n.º 2
0
        internal static unsafe PartitionSchemeDescription CreateFromNative(NativeTypes.FABRIC_PARTITION_SCHEME scheme, IntPtr ptr)
        {
            ReleaseAssert.AssertIfNot(scheme != NativeTypes.FABRIC_PARTITION_SCHEME.FABRIC_PARTITION_SCHEME_INVALID, StringResources.Error_PartitionSchemeNotSupported);

            switch (scheme)
            {
            case NativeTypes.FABRIC_PARTITION_SCHEME.FABRIC_PARTITION_SCHEME_SINGLETON:
                return(SingletonPartitionSchemeDescription.CreateFromNative(ptr));

            case NativeTypes.FABRIC_PARTITION_SCHEME.FABRIC_PARTITION_SCHEME_UNIFORM_INT64_RANGE:
                return(UniformInt64RangePartitionSchemeDescription.CreateFromNative(ptr));

            case NativeTypes.FABRIC_PARTITION_SCHEME.FABRIC_PARTITION_SCHEME_NAMED:
                return(NamedPartitionSchemeDescription.CreateFromNative(ptr));

            default:
                AppTrace.TraceSource.WriteError("ServicePartitionDescription.CreateFromNative", "Unknown scheme: {0}", scheme);
                ReleaseAssert.Failfast(string.Format(CultureInfo.CurrentCulture, StringResources.Error_PartitionSchemeUnknown_Formatted, scheme));
                break;
            }

            return(null);
        }
Exemplo n.º 3
0
        private async Task CancelStateProviderInitializationAsync()
        {
            if (this.stateProviderInitCts != null &&
                this.stateProviderInitCts.IsCancellationRequested == false)
            {
                ActorTrace.Source.WriteInfoWithId(TraceType, this.traceId, "Canceling state provider initialization...");

                this.stateProviderInitCts.Cancel();

                try
                {
                    await this.stateProviderInitTask;
                }
                catch (Exception ex)
                {
                    // Code should never come here.
                    ReleaseAssert.Failfast(
                        "CancelStateProviderInitializationAsync() unexpected exception: {0}.",
                        ex.ToString());
                }
                finally
                {
                    this.stateProviderInitCts  = null;
                    this.stateProviderInitTask = null;
                }
            }

            // Stop logical timer if it is running
            if (this.isLogicalTimeManagerInitialized == true)
            {
                ActorTrace.Source.WriteInfoWithId(TraceType, this.traceId, "Stopping logical time manager...");

                this.logicalTimeManager.Stop();
                this.isLogicalTimeManagerInitialized = false;
            }
        }
        internal override Task <BufferedClientStream> AcquireClientStreamAsync(CancellationToken cancellationToken)
        {
            cancellationToken.ThrowIfCancellationRequested();

            NamedPipeClientStream pipeClientStream = null;
            BufferedClientStream  clientStream     = null;

            try
            {
                pipeClientStream = new NamedPipeClientStream(this.serverName, this.pipeName);
                pipeClientStream.Connect(ClientConnectionTimeoutMilliSeconds);

                clientStream = new BufferedClientStream(pipeClientStream);
            }
            catch (ArgumentOutOfRangeException ex)
            {
                ReleaseAssert.Failfast($"Connecting to pipe encountered: {ex}.");
            }
            catch (InvalidOperationException ex)
            {
                ReleaseAssert.Failfast($"Connecting to pipe encountered: {ex}.");
            }
            catch (Exception ex)
            {
                if (pipeClientStream != null)
                {
                    pipeClientStream.Dispose();
                }

                var errMsg = this.GetConnectionFailedErrorMessage(ex);
                AppTrace.TraceSource.WriteWarning(TraceType, errMsg);
                throw new FabricException(errMsg, FabricErrorCode.OperationTimedOut);
            }

            return(Task.FromResult(clientStream));
        }
Exemplo n.º 5
0
        private static ContainerEventType EventTypeFromString(string eventTypeStr)
        {
            var eventTypeStrLower = eventTypeStr.ToLowerInvariant().Trim();
            var eventType         = ContainerEventType.None;

            if (eventTypeStrLower == "stop")
            {
                eventType = ContainerEventType.Stop;
            }
            else if (eventTypeStrLower == "die")
            {
                eventType = ContainerEventType.Die;
            }
            else if (eventTypeStrLower.StartsWith("health_status"))
            {
                eventType = ContainerEventType.Health;
            }
            else
            {
                ReleaseAssert.Failfast("Unexpected container event received: {0}", eventTypeStr);
            }

            return(eventType);
        }
Exemplo n.º 6
0
            public override async Task <ActionStateBase> RunAsync(CancellationToken cancellationToken, ServiceInternalFaultInfo serviceInternalFaultInfo)
            {
                NodeCommandState state = Convert(this.State);

                // The return value is ignored, this is just being used to check if the RemoveNodeState was called.
                Node queriedNode = await FaultAnalysisServiceUtility.GetNodeInfoAsync(
                    this.State.OperationId,
                    this.FabricClient,
                    state.Info.NodeName,
                    this.action.Partition,
                    this.action.StateManager,
                    this.action.StoppedNodeTable,
                    this.RequestTimeout,
                    this.OperationTimeout,
                    cancellationToken).ConfigureAwait(false);

                TestabilityTrace.TraceSource.WriteInfo(StepBase.TraceType, "{0} - calling StartNodeUsingNodeNameAsync, ApiInputNodeInstanceId={1}", this.State.OperationId, state.Info.InputNodeInstanceId);

                Exception exception = null;

                try
                {
                    await FabricClientRetryHelper.ExecuteFabricActionWithRetryAsync(
                        () => this.FabricClient.FaultManager.StartNodeUsingNodeNameAsync(
                            state.Info.NodeName,
                            state.Info.InputNodeInstanceId,
                            null,
                            0,
                            this.RequestTimeout,
                            cancellationToken),
                        FabricClientRetryErrors.StartNodeErrors.Value,
                        this.OperationTimeout,
                        cancellationToken).ConfigureAwait(false);
                }
                catch (Exception e)
                {
                    TestabilityTrace.TraceSource.WriteWarning(StepBase.TraceType, "{0} - StartNodeUsingNodeNameAsync threw {1}", this.State.OperationId, e);
                    exception = e;
                }

                cancellationToken.ThrowIfCancellationRequested();

                SuccessRetryOrFail status = SuccessRetryOrFail.Invalid;

                if (exception != null)
                {
                    FabricException fe = exception as FabricException;
                    if (fe != null)
                    {
                        status = this.HandleFabricException(fe, state);
                    }
                    else
                    {
                        TestabilityTrace.TraceSource.WriteWarning(StepBase.TraceType, "{0} - StartNodeUsingNodeNameAsync threw non-FabricException with ErrorCode={1}", this.State.OperationId, exception);
                        status = SuccessRetryOrFail.RetryStep;
                    }
                }
                else
                {
                    // success
                    status = SuccessRetryOrFail.Success;

                    await FaultAnalysisServiceUtility.SetStoppedNodeStateAsync(
                        this.action.State.OperationId,
                        this.action.Partition,
                        this.action.StateManager,
                        this.action.StoppedNodeTable,
                        state.Info.NodeName,
                        false,
                        cancellationToken).ConfigureAwait(false);
                }

                ActionTest.PerformInternalServiceFaultIfRequested(this.State.OperationId, serviceInternalFaultInfo, this.State, cancellationToken, true);

                if (status == SuccessRetryOrFail.RetryStep)
                {
                    throw new RetrySameStepException("retrystep", exception);
                }
                else if (status == SuccessRetryOrFail.Fail)
                {
                    throw new FatalException("fatal", exception);
                }
                else if (status == SuccessRetryOrFail.Success)
                {
                    // no-op
                }
                else
                {
                    ReleaseAssert.Failfast(string.Format(CultureInfo.InvariantCulture, "This condition should not have been hit.  OperationId: {0}", this.State.OperationId));
                }

                await this.ValidateAsync(this.FabricClient, state, cancellationToken).ConfigureAwait(false);

                state.StateProgress.Push(StepStateNames.CompletedSuccessfully);
                return(state);
            }
Exemplo n.º 7
0
        private bool HandleRollback(Guid operationId, Exception exception, List <FabricErrorCode> expectedErrorCodes)
        {
            TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Enter HandleRollback", operationId);
            if (exception == null)
            {
                string error = string.Format(CultureInfo.InvariantCulture, "{0} - exception is null", operationId);
                ReleaseAssert.Failfast(error);
            }

            if (exception is FatalException)
            {
                TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - HandleRollback - FatalException", operationId);
                return(false);
            }

            if (exception is RollbackAndRetryCommandException)
            {
                TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - HandleRollback - RollbackAndRetryCommandException", operationId);
                return(true);
            }

            // Use for internal testing
            if (exception is InvalidOperationException)
            {
                TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - HandleRollback - InvalidOperationException", operationId);
                return(false);
            }

            if (exception is OperationCanceledException)
            {
                TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Retrying after OperationCanceledException", operationId);
                return(true);
            }

            if (exception is FabricInvalidAddressException)
            {
                TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Retrying after {1}", operationId, exception);
                return(true);
            }

            // Add to this list
            if (exception is FabricException)
            {
                FabricException fabricException = exception as FabricException;
                if ((fabricException.ErrorCode == FabricErrorCode.InvalidReplicaStateForReplicaOperation) || // eg restart of down replica
                    (fabricException.ErrorCode == FabricErrorCode.InvalidAddress) ||
                    (fabricException.ErrorCode == FabricErrorCode.NotReady) ||
                    (fabricException.ErrorCode == FabricErrorCode.OperationTimedOut) ||
                    (fabricException.ErrorCode == FabricErrorCode.ReplicaDoesNotExist))
                {
                    TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Retrying after {1}", operationId, exception);
                    return(true);
                }
            }

            FabricException innerException = exception as FabricException;

            if (innerException == null)
            {
                // malformed exception
                string error = string.Format(CultureInfo.InvariantCulture, "{0} - Exception type was not expected: '{1}'", operationId, exception);
                TestabilityTrace.TraceSource.WriteError(TraceType, "{0}", error);
                return(false);
            }

            if (innerException is FabricTransientException)
            {
                TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Retrying after inner ex {1}", operationId, exception);
                return(true);
            }

            TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Bottom of HandleRollback, printing exception info", operationId);
            TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Exception: {1}", operationId, exception);
            TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Inner ex {1}", operationId, innerException);
            TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Inner ex error code {1}", operationId, innerException.ErrorCode);

            // nonretryable
            return(false);
        }
Exemplo n.º 8
0
        private async Task RunStateMachineAsync(
            FabricClient fabricClient,
            FabricTestAction action,
            ActionStateBase actionState,
            ServiceInternalFaultInfo serviceInternalFaultInfo,
            CancellationToken cancellationToken)
        {
            if (actionState.StateProgress == null || actionState.StateProgress.Count == 0)
            {
                ReleaseAssert.AssertIf(actionState.StateProgress == null || actionState.StateProgress.Count == 0, "ActionProgress should not be null or empty");
            }

            Exception actionError = null;

            if (actionState.RollbackState == RollbackState.NotRollingBack ||
                (actionState.RollbackState != RollbackState.RollingBackForce && actionState.RetryStepWithoutRollingBackOnFailure))
            {
                // TODO: should also include Error
                while (actionState.StateProgress.Peek() != StepStateNames.CompletedSuccessfully)
                {
                    cancellationToken.ThrowIfCancellationRequested();

                    RollbackState readRollbackState = await this.CheckUserCancellationAndUpdateIfNeededAsync(actionState, cancellationToken, FASConstants.ForwardLoop).ConfigureAwait(false);

                    if ((readRollbackState == RollbackState.RollingBackForce) ||
                        ((readRollbackState == RollbackState.RollingBackDueToUserCancel) && !actionState.RetryStepWithoutRollingBackOnFailure))
                    {
                        break;
                    }

                    try
                    {
                        await this.RunStepAsync(fabricClient, action, actionState, cancellationToken, serviceInternalFaultInfo).ConfigureAwait(false);

                        ActionTest.PerformInternalServiceFaultIfRequested(actionState.OperationId, serviceInternalFaultInfo, actionState, cancellationToken);
                        if (actionState.StateProgress.Peek() == StepStateNames.CompletedSuccessfully)
                        {
                            TestabilityTrace.TraceSource.WriteInfo(TraceType, "{0} - completed successfully, clearing ErrorCausingRollback", actionState.OperationId);
                            actionState.ErrorCausingRollback = 0;
                        }

                        actionState.TimeStopped = DateTime.UtcNow;
                        await this.actionStore.UpdateActionStateAsync(actionState).ConfigureAwait(false);
                    }
                    catch (RetrySameStepException)
                    {
                        // Retry the command in the same step - do not rollback or go forward, and do not call ActionStore.UpdateActionStateAsync().
                        TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - threw RetrySameStepException, retrying state {1} ", actionState.StateProgress.Peek());
                    }
                    catch (FabricNotPrimaryException)
                    {
                        throw;
                    }
                    catch (FabricObjectClosedException)
                    {
                        throw;
                    }
                    catch (Exception e)
                    {
                        TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - RunStateMachineAsync caught: {1}", actionState.OperationId, e.ToString());
                        readRollbackState = this.CheckUserCancellationAndUpdateIfNeededAsync(actionState, cancellationToken, FASConstants.ForwardLoopExceptionBlock).GetAwaiter().GetResult();

                        // 1st line: if this is a force rollback (RollingBackForce), just exit
                        // 2nd line: if !RetryStepWithoutRollingBackOnFailure and there was a graceful cancel then exit this block and proceed to the rollback code block below.
                        // If RetryStepWithoutRollingBackOnFailure is true, which it is only for the node steps today,  then first call HandleRollback to translate the exception.
                        if ((readRollbackState == RollbackState.RollingBackForce) ||
                            ((readRollbackState == RollbackState.RollingBackDueToUserCancel) && !actionState.RetryStepWithoutRollingBackOnFailure))
                        {
                            break;
                        }
                        else
                        {
                            bool isRetryable = this.HandleRollback(actionState.OperationId, e);
                            if (isRetryable)
                            {
                                TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - observed retryable exception, will retry action.  Exception: {1}", actionState.OperationId, e.ToString());
                                actionState.RollbackState = RollbackState.RollingBackAndWillRetryAction;
                            }
                            else
                            {
                                TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - observed non-retryable exception.  Exception: {1}", actionState.OperationId, e.ToString());
                                actionState.RollbackState = RollbackState.RollingBackAndWillFailAction;
                            }
                        }

                        actionError = e;
                        break;
                    }
                }
            }

            if (actionState.RollbackState == RollbackState.RollingBackAndWillRetryAction ||
                actionState.RollbackState == RollbackState.RollingBackAndWillFailAction ||
                (actionState.RollbackState == RollbackState.RollingBackDueToUserCancel && (actionState.StateProgress.Peek() != StepStateNames.CompletedSuccessfully)))
            {
                TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Rollingback type={1}", actionState.OperationId, actionState.ActionType);
                if (!this.isTestMode && actionState.StateProgress.Peek() == StepStateNames.CompletedSuccessfully)
                {
                    string error = string.Format(CultureInfo.InvariantCulture, "{0} - state should not be CompletedSuccessfully", actionState.OperationId);
                    TestabilityTrace.TraceSource.WriteError(TraceType, error);
                    ReleaseAssert.Failfast(error);
                }

                // If actionError is not null it means we are currently running a resumed rollback.  In that case the ErrorCausingRollback must have
                // already been set.
                if (actionError != null)
                {
                    actionState.ErrorCausingRollback = TranslateRollbackError(actionError.HResult);
                    TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Translated ErrorCausingRollback ={1}", actionState.OperationId, actionState.ErrorCausingRollback);
                }

                if (this.isTestMode && actionState.StateProgress.Peek() == StepStateNames.CompletedSuccessfully)
                {
                    // In test mode it's intentionally possible to fault an action after it's completed its work, but before the state name has been updated.
                    actionState.StateProgress.Pop();
                }

                await this.actionStore.UpdateActionStateAsync(actionState).ConfigureAwait(false);

                try
                {
                    while (actionState.StateProgress.Peek() != StepStateNames.IntentSaved &&
                           actionState.StateProgress.Peek() != StepStateNames.Failed)
                    {
                        cancellationToken.ThrowIfCancellationRequested();
                        RollbackState readRollbackState = await this.CheckUserCancellationAndUpdateIfNeededAsync(actionState, cancellationToken, FASConstants.OuterCleanupLoop).ConfigureAwait(false);

                        if (readRollbackState == RollbackState.RollingBackDueToUserCancel)
                        {
                            // Do nothing, already rolling back - debug only
                            TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Read RollingBackDueToUserCancel in outer rollback loop", actionState.OperationId);
                        }
                        else if (readRollbackState == RollbackState.RollingBackForce)
                        {
                            TestabilityTrace.TraceSource.WriteWarning(TraceType, "{0} - Read RollingBackForce in outer rollback loop", actionState.OperationId);
                            break;
                        }

                        StepStateNames currentStateName = actionState.StateProgress.Peek();
                        TestabilityTrace.TraceSource.WriteInfo(TraceType, "{0} - DEBUG - Rollback path loop, current state {1}", actionState.OperationId, actionState.StateProgress.Peek());

                        try
                        {
                            await this.CleanupStepAsync(fabricClient, action, actionState, cancellationToken, serviceInternalFaultInfo).ConfigureAwait(false);

                            await this.actionStore.UpdateActionStateAsync(actionState).ConfigureAwait(false);
                        }
                        catch (FabricNotPrimaryException)
                        {
                            throw;
                        }
                        catch (FabricObjectClosedException)
                        {
                            throw;
                        }
                        catch (Exception e)
                        {
                            ReleaseAssert.Failfast("Unexpected exception, RunStateAsync for cleanup should have handled {0}", e);
                        }
                    }

                    // If this is true rollback is finished.  If it is retryable set the state to LookingUpState
                    if (actionState.StateProgress.Peek() == StepStateNames.IntentSaved)
                    {
                        if (actionState.RollbackState == RollbackState.RollingBackAndWillRetryAction)
                        {
                            actionState.StateProgress.Push(StepStateNames.LookingUpState);
                            actionState.ClearInfo();
                        }
                        else if (actionState.RollbackState == RollbackState.RollingBackAndWillFailAction)
                        {
                            actionState.StateProgress.Push(StepStateNames.Failed);

                            actionState.RollbackState = RollbackState.NotRollingBack;
                            actionState.TimeStopped   = DateTime.UtcNow;
                        }
                        else if (actionState.RollbackState == RollbackState.RollingBackDueToUserCancel)
                        {
                            actionState.StateProgress.Push(StepStateNames.Failed);

                            actionState.TimeStopped = DateTime.UtcNow;
                        }
                        else if (actionState.RollbackState == RollbackState.RollingBackForce)
                        {
                            actionState.StateProgress.Push(StepStateNames.Failed);

                            actionState.TimeStopped = DateTime.UtcNow;
                        }
                        else
                        {
                            string error = string.Format(CultureInfo.InvariantCulture, "{0} - RollbackState == NotRollingBack not expected", actionState.OperationId);
                            ReleaseAssert.Failfast(error);
                        }
                    }
                    else if (actionState.RollbackState == RollbackState.RollingBackForce)
                    {
                        actionState.StateProgress.Push(StepStateNames.Failed);
                        actionState.TimeStopped = DateTime.UtcNow;
                    }
                }
                catch (OperationCanceledException)
                {
                    // This means the cancellation token is set, not that an api call observed an E_ABORT
                    throw;
                }
                catch (FabricNotPrimaryException)
                {
                    throw;
                }
                catch (FabricObjectClosedException)
                {
                    throw;
                }
                catch (Exception e)
                {
                    ReleaseAssert.Failfast("Unexpected exception, RunStateAsync for cleanup should have handled {0}", e);
                }

                TestabilityTrace.TraceSource.WriteInfo(
                    TraceType,
                    "{0} - Action failed, type='{1}', will retry={2}, RollbackState={3}",
                    actionState.OperationId,
                    actionState.ActionType,
                    actionState.RollbackState == RollbackState.RollingBackAndWillRetryAction ? "true" : "false",
                    actionState.RollbackState);

                await this.actionStore.UpdateActionStateAsync(actionState).ConfigureAwait(false);
            }
            else if (actionState.StateProgress.Peek() == StepStateNames.CompletedSuccessfully)
            {
                // user cancelled, but action/command completed anyways before cancellation was checked.
                TestabilityTrace.TraceSource.WriteInfo(TraceType, "DEBUG {0} - Action type '{1}' completed successfully, not updating again ", actionState.OperationId, actionState.ActionType);
            }
            else if ((actionState.StateProgress.Peek() == StepStateNames.IntentSaved) &&
                     (actionState.RollbackState == RollbackState.RollingBackDueToUserCancel))
            {
                actionState.StateProgress.Push(StepStateNames.Failed);
                actionState.TimeStopped = DateTime.UtcNow;

                await this.actionStore.UpdateActionStateAsync(actionState).ConfigureAwait(false);
            }
            else if (actionState.RollbackState == RollbackState.RollingBackForce)
            {
                // Note: unlike the case above this does not have a state of IntentSaved as a requirement since a force rollback is an abort and does run the steps in reverse.
                // It is possible for the StateProgress to be CompletedSuccessfully here, since we want to exit as quickly as possible.  In that case, the block 2 blocks above handles it -
                // we do nothing extra, and the command finishes executing.  If the user calls an api for information on this command, we translate the state to ForceCancelled if state is a terminal state
                // and RollbackState is RollingBackForce.  See ActionStore.MatchesStateFilter().
                actionState.TimeStopped = DateTime.UtcNow;
                TestabilityTrace.TraceSource.WriteWarning(TraceType, "Bottom of Engine.RunAsync() - state is={0}, rollbackState={1}", actionState.StateProgress.Peek().ToString(), actionState.RollbackState.ToString());
                actionState.StateProgress.Push(StepStateNames.Failed);
                await this.actionStore.UpdateActionStateAsync(actionState).ConfigureAwait(false);
            }
            else
            {
                string unexpectedError = string.Format(CultureInfo.InvariantCulture, "Unexpected case reached, state is={0}, rollbackState={1}", actionState.StateProgress.Peek().ToString(), actionState.RollbackState.ToString());
                TestabilityTrace.TraceSource.WriteError(TraceType, "{0}", unexpectedError);
                ReleaseAssert.Failfast(unexpectedError);
            }
        }
Exemplo n.º 9
0
        internal static unsafe NamedProperty FromNative(NativeClient.IFabricPropertyValueResult nativeResult, bool includesValue)
        {
            if (nativeResult == null)
            {
                return(null);
            }

            NativeTypes.FABRIC_NAMED_PROPERTY *nativeNamedProperty = (NativeTypes.FABRIC_NAMED_PROPERTY *)nativeResult.get_Property();

            if (nativeNamedProperty->Metadata == IntPtr.Zero)
            {
                AppTrace.TraceSource.WriteError("NamedProperty.GetValueInternal", "Property has no metadata");
                ReleaseAssert.Failfast(StringResources.Error_PropertyHasNoMetadata);
            }

            NativeTypes.FABRIC_NAMED_PROPERTY_METADATA *nativePropertyMetaData = (NativeTypes.FABRIC_NAMED_PROPERTY_METADATA *)nativeNamedProperty->Metadata;

            NamedPropertyMetadata namedPropertyMetadata = NamedPropertyMetadata.FromNative(*nativePropertyMetaData);

            if (nativeNamedProperty->Value == IntPtr.Zero)
            {
                includesValue = false;
            }

            NamedProperty returnValue = null;

            if (includesValue)
            {
                object value = null;

                switch (namedPropertyMetadata.TypeId)
                {
                case PropertyTypeId.Binary:
                    value = NativeTypes.FromNativeBytes(nativeNamedProperty->Value, (uint)namedPropertyMetadata.ValueSize);
                    break;

                case PropertyTypeId.Int64:
                    value = (Int64)(*((Int64 *)nativeNamedProperty->Value));
                    break;

                case PropertyTypeId.Double:
                    value = (double)(*((double *)nativeNamedProperty->Value));
                    break;

                case PropertyTypeId.String:
                    value = new string((char *)nativeNamedProperty->Value);
                    break;

                case PropertyTypeId.Guid:
                    value = (Guid)(*((Guid *)nativeNamedProperty->Value));
                    break;

                default:
                    AppTrace.TraceSource.WriteError("NamedProperty.GetValueInternal", "Unknown propertyTypeId: {0}", namedPropertyMetadata.TypeId);
                    throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, StringResources.Error_PropertyTypeIDUnknown_Formatted, namedPropertyMetadata.TypeId));
                }

                returnValue = new NamedProperty(namedPropertyMetadata, value);
            }
            else
            {
                returnValue = new NamedProperty(namedPropertyMetadata);
            }

            GC.KeepAlive(nativeResult);
            return(returnValue);
        }
Exemplo n.º 10
0
        public Task InsertCommandAsync(Command command)
        {
            Uri failoverManagerUri = new Uri("fabric:/System/FailoverManagerService");

            TestabilityTrace.TraceSource.WriteInfo(MockClient.TraceType, "****Adding command: " + command);
            Task task = null;

            if (command == Command.FailoverManagerDataLoss)
            {
                PartitionSelector ps = PartitionSelector.SingletonOf(failoverManagerUri);
                Guid id = MockClientCommandInfo[Command.FailoverManagerDataLoss];
                task = this.messageProcessor.ProcessDataLossCommandAsync(id, ps, DataLossMode.FullDataLoss, FASConstants.DefaultTestTimeout, null);

                this.WaitForState(id, StepStateNames.CompletedSuccessfully);
            }
            else if (command == Command.InvokeDataLossMidActionTestFatal)
            {
                PartitionSelector        ps        = PartitionSelector.SingletonOf(failoverManagerUri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.MidPerformingActions, ServiceInternalFaultType.RollbackAction);
                Guid id = MockClientCommandInfo[Command.InvokeDataLossMidActionTestFatal];
                task = this.messageProcessor.ProcessDataLossCommandAsync(id, ps, DataLossMode.FullDataLoss, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed);
            }
            else if (command == Command.InvokeDataLossMidActionTestTransient)
            {
                // rollback and retry then success
                PartitionSelector        ps        = PartitionSelector.SingletonOf(failoverManagerUri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.MidPerformingActions, ServiceInternalFaultType.RollbackActionAndRetry);
                Guid id = MockClientCommandInfo[Command.InvokeDataLossMidActionTestTransient];
                task = this.messageProcessor.ProcessDataLossCommandAsync(id, ps, DataLossMode.FullDataLoss, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.CompletedSuccessfully);
            }
            else if (command == Command.InvokeDataLossMidActionTestFailover)
            {
                // failover then success
                PartitionSelector        ps        = PartitionSelector.SingletonOf(failoverManagerUri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.MidPerformingActions, ServiceInternalFaultType.KillProcess);
                Guid id = MockClientCommandInfo[Command.InvokeDataLossMidActionTestFailover];
                task = this.messageProcessor.ProcessDataLossCommandAsync(id, ps, DataLossMode.FullDataLoss, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.CompletedSuccessfully);
            }
            else if (command == Command.FailoverManagerDataLossCauseActionRollbackFatal)
            {
                PartitionSelector        ps        = PartitionSelector.SingletonOf(failoverManagerUri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.CompletedSuccessfully, ServiceInternalFaultType.RollbackAction);
                Guid id = MockClientCommandInfo[Command.FailoverManagerDataLossCauseActionRollbackFatal];
                task = this.messageProcessor.ProcessDataLossCommandAsync(id, ps, DataLossMode.FullDataLoss, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed);
            }
            else if (command == Command.FailoverManagerDataLossCauseActionRollbackWithSuccessOnRetry)
            {
                PartitionSelector        ps        = PartitionSelector.SingletonOf(failoverManagerUri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.CompletedSuccessfully, ServiceInternalFaultType.RollbackActionAndRetry);
                Guid id = MockClientCommandInfo[Command.FailoverManagerDataLossCauseActionRollbackWithSuccessOnRetry];
                task = this.messageProcessor.ProcessDataLossCommandAsync(id, ps, DataLossMode.FullDataLoss, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.CompletedSuccessfully);
            }
            else if (command == Command.FailoverManagerDataLossFailoverFaultAnalysisService)
            {
                PartitionSelector        ps        = PartitionSelector.SingletonOf(failoverManagerUri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.PerformingActions, ServiceInternalFaultType.KillProcess);
                Guid id = MockClientCommandInfo[Command.FailoverManagerDataLossFailoverFaultAnalysisService];
                task = this.messageProcessor.ProcessDataLossCommandAsync(id, ps, DataLossMode.FullDataLoss, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.CompletedSuccessfully);
            }
            else if (command == Command.FailoverManagerDataLossCauseActionRollbackFatalBeforeActionStep)
            {
                PartitionSelector        ps        = PartitionSelector.SingletonOf(failoverManagerUri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.PerformingActions, ServiceInternalFaultType.RollbackAction);
                Guid id = MockClientCommandInfo[Command.FailoverManagerDataLossCauseActionRollbackFatalBeforeActionStep];
                task = this.messageProcessor.ProcessDataLossCommandAsync(id, ps, DataLossMode.FullDataLoss, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed);
            }
            else if (command == Command.FailoverManagerDataLossCauseActionRollbackWithSuccessOnRetryBeforeActionStep)
            {
                PartitionSelector        ps        = PartitionSelector.SingletonOf(failoverManagerUri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.PerformingActions, ServiceInternalFaultType.RollbackActionAndRetry);
                Guid id = MockClientCommandInfo[Command.FailoverManagerDataLossCauseActionRollbackWithSuccessOnRetryBeforeActionStep];
                task = this.messageProcessor.ProcessDataLossCommandAsync(id, ps, DataLossMode.FullDataLoss, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.CompletedSuccessfully);
            }
            else if (command == Command.InvokeQuorumLossMidActionTestFatal)
            {
                Uri uri = new Uri("fabric:/System/NamingService");
                PartitionSelector        ps        = PartitionSelector.RandomOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.MidPerformingActions, ServiceInternalFaultType.RollbackAction);
                Guid id = MockClientCommandInfo[Command.InvokeQuorumLossMidActionTestFatal];
                task = this.messageProcessor.ProcessQuorumLossCommandAsync(id, ps, QuorumLossMode.AllReplicas, TimeSpan.FromSeconds(10.0d), FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed);
            }
            else if (command == Command.InvokeQuorumLossMidActionTestFailover)
            {
                Uri uri = new Uri("fabric:/System/NamingService");
                PartitionSelector        ps        = PartitionSelector.RandomOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.MidPerformingActions, ServiceInternalFaultType.KillProcess);
                Guid id = MockClientCommandInfo[Command.InvokeQuorumLossMidActionTestFailover];
                task = this.messageProcessor.ProcessQuorumLossCommandAsync(id, ps, QuorumLossMode.AllReplicas, TimeSpan.FromSeconds(10.0d), FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.CompletedSuccessfully);
            }
            else if (command == Command.InvokeQuorumLossMidActionTestTransient)
            {
                Uri uri = new Uri("fabric:/System/NamingService");
                PartitionSelector        ps        = PartitionSelector.RandomOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.MidPerformingActions, ServiceInternalFaultType.RollbackActionAndRetry);
                Guid id = MockClientCommandInfo[Command.InvokeQuorumLossMidActionTestTransient];
                task = this.messageProcessor.ProcessQuorumLossCommandAsync(id, ps, QuorumLossMode.AllReplicas, TimeSpan.FromSeconds(10.0d), FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.CompletedSuccessfully);
            }
            else if (command == Command.RestartPartitionMidActionTestFatal)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.MidPerformingActions, ServiceInternalFaultType.RollbackAction);
                Guid id = MockClientCommandInfo[Command.RestartPartitionMidActionTestFatal];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed);
            }
            else if (command == Command.RestartPartitionMidActionTestFailover)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.MidPerformingActions, ServiceInternalFaultType.KillProcess);
                Guid id = MockClientCommandInfo[Command.RestartPartitionMidActionTestFailover];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.CompletedSuccessfully);
            }
            else if (command == Command.RestartPartitionMidActionTestTransient)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(StepStateNames.MidPerformingActions, ServiceInternalFaultType.RollbackActionAndRetry);
                Guid id = MockClientCommandInfo[Command.RestartPartitionMidActionTestTransient];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.CompletedSuccessfully);
            }
            else if (command == Command.StuckAction)
            {
                Guid id = MockClientCommandInfo[Command.StuckAction];
                task = this.messageProcessor.ProcessStuckCommandAsync(id, null);
            }
            else if (command == Command.RestartPartitionCancelOuterLoopNoForce)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.None, // for this case this value does not matter
                    ServiceInternalFaultType.None,
                    RollbackState.RollingBackDueToUserCancel,
                    FASConstants.OuterLoop);
                Guid id = MockClientCommandInfo[Command.RestartPartitionCancelOuterLoopNoForce];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed, RollbackState.RollingBackDueToUserCancel);
            }
            else if (command == Command.RestartPartitionCancelForwardNoForce)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.None,
                    ServiceInternalFaultType.None,
                    RollbackState.RollingBackDueToUserCancel,
                    FASConstants.ForwardLoop);
                Guid id = MockClientCommandInfo[Command.RestartPartitionCancelForwardNoForce];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed, RollbackState.RollingBackDueToUserCancel);
            }
            else if (command == Command.RestartPartitionCancelForwardExceptionNoForce)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.MidPerformingActions,
                    ServiceInternalFaultType.RollbackAction,
                    RollbackState.RollingBackDueToUserCancel,
                    FASConstants.ForwardLoopExceptionBlock);
                Guid id = MockClientCommandInfo[Command.RestartPartitionCancelForwardExceptionNoForce];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed, RollbackState.RollingBackDueToUserCancel);
            }
            else if (command == Command.RestartPartitionCancelOuterCleanupNoForce)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.PerformingActions,
                    ServiceInternalFaultType.RollbackAction,
                    RollbackState.RollingBackDueToUserCancel,
                    FASConstants.OuterCleanupLoop);
                Guid id = MockClientCommandInfo[Command.RestartPartitionCancelOuterCleanupNoForce];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed, RollbackState.RollingBackDueToUserCancel);
            }
            else if (command == Command.RestartPartitionCancelCleanupInnerNoForce)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.PerformingActions,
                    ServiceInternalFaultType.RollbackAction,
                    RollbackState.RollingBackDueToUserCancel,
                    FASConstants.InnerCleanupLoop);
                Guid id = MockClientCommandInfo[Command.RestartPartitionCancelCleanupInnerNoForce];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed, RollbackState.RollingBackDueToUserCancel);
            }
            else if (command == Command.RestartPartitionCancelOuterLoopForce)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.PerformingActions, // for this case, this value does not matter
                    ServiceInternalFaultType.RollbackAction,
                    RollbackState.RollingBackForce,
                    FASConstants.ForwardLoop);
                Guid id = MockClientCommandInfo[Command.RestartPartitionCancelOuterLoopForce];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed, RollbackState.RollingBackForce);
            }
            else if (command == Command.RestartPartitionCancelForwardForce)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.PerformingActions,
                    ServiceInternalFaultType.RollbackAction,
                    RollbackState.RollingBackForce,
                    FASConstants.ForwardLoop);
                Guid id = MockClientCommandInfo[Command.RestartPartitionCancelForwardForce];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed, RollbackState.RollingBackForce);
            }
            else if (command == Command.RestartPartitionCancelForwardExceptionForce)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.PerformingActions,
                    ServiceInternalFaultType.RollbackAction,
                    RollbackState.RollingBackForce,
                    FASConstants.ForwardLoopExceptionBlock);
                Guid id = MockClientCommandInfo[Command.RestartPartitionCancelForwardExceptionForce];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed, RollbackState.RollingBackForce);
            }
            else if (command == Command.RestartPartitionCancelOuterCleanupForce)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.PerformingActions,
                    ServiceInternalFaultType.RollbackAction,
                    RollbackState.RollingBackForce,
                    FASConstants.OuterCleanupLoop);
                Guid id = MockClientCommandInfo[Command.RestartPartitionCancelOuterCleanupForce];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed, RollbackState.RollingBackForce);
            }
            else if (command == Command.RestartPartitionCancelCleanupInnerForce)
            {
                Uri uri = new Uri("fabric:/System/ClusterManagerService");
                PartitionSelector        ps        = PartitionSelector.SingletonOf(uri);
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.PerformingActions,
                    ServiceInternalFaultType.RollbackAction,
                    RollbackState.RollingBackForce,
                    FASConstants.InnerCleanupLoop);
                Guid id = MockClientCommandInfo[Command.RestartPartitionCancelCleanupInnerForce];
                task = this.messageProcessor.ProcessRestartPartitionCommandAsync(id, ps, RestartPartitionMode.AllReplicasOrInstances, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.Failed, RollbackState.RollingBackForce);
            }
            else if (command == Command.TestRetryStepWithSuccessAfterRetries)
            {
                // Intentionally fail the step corresponding to StepStateNames.PerformingActions step a few times, then run it normally (pass).  It should succeed.
                Guid id = MockClientCommandInfo[Command.TestRetryStepWithSuccessAfterRetries];
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.MidPerformingActions,
                    ServiceInternalFaultType.ThrowThreeTimes);

                task = this.messageProcessor.ProcessRetryStepCommandAsync(id, faultInfo);
                this.WaitForState(id, StepStateNames.CompletedSuccessfully, RollbackState.NotRollingBack);
            }
            else if (command == Command.TestRetryStepWithForceCancel)
            {
                // Force cancel a command with ActionStateBase.RetryStepWithoutRollingBackOnFailure set to true
                Guid id = MockClientCommandInfo[Command.TestRetryStepWithForceCancel];
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.CompletedSuccessfully, // this just has to be a late step so an earlier fault is not used before we reach the situation we want.
                    ServiceInternalFaultType.RollbackAction,
                    RollbackState.RollingBackForce,       // note, the graceful one should not cause cancellation since for this type we only allow user cancellation when force is true
                    FASConstants.InnerForwardLoop,
                    StepStateNames.PerformingActions);
                task = this.messageProcessor.ProcessRetryStepCommandAsync(id, faultInfo);
                this.WaitForState(id, StepStateNames.Failed, RollbackState.RollingBackForce);
            }
            else if (command == Command.StopNodeWithUnknownException)
            {
                Guid id = MockClientCommandInfo[Command.StopNodeWithUnknownException];
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.MidPerformingActions,
                    ServiceInternalFaultType.RollbackAction);  // In this case, since start and stop node do not rollback like other commands, this exception should cause the step to retry.

                Node target = ActionTest.GetNodeWithFASSecondary().Result;
                TestabilityTrace.TraceSource.WriteInfo(MockClient.TraceType, "{0} stopping {1}:{2}", id, target.NodeName, target.NodeInstanceId);
                task = this.messageProcessor.ProcessStopNodeCommandAsync(id, target.NodeName, target.NodeInstanceId, 999, FASConstants.DefaultTestTimeout, faultInfo);

                // Let the command make progress
                Task.Delay(TimeSpan.FromSeconds(30)).Wait();
                this.WaitForState(id, StepStateNames.PerformingActions, RollbackState.NotRollingBack);

                // This should not result in cancellation, since start and stop node have different rollback policies than the other commands.
                TestabilityTrace.TraceSource.WriteInfo(MockClient.TraceType, "{0} - cancelling with force==false.  This should not cancel the command", id);
                this.messageProcessor.CancelTestCommandAsync(id, false);

                this.WaitForState(id, StepStateNames.PerformingActions, RollbackState.RollingBackDueToUserCancel);

                // Now force cancel.  This should cancel.
                TestabilityTrace.TraceSource.WriteInfo(MockClient.TraceType, "{0} - cancelling with force==true.  This should cancel the command", id);
                this.messageProcessor.CancelTestCommandAsync(id, true);
                this.WaitForState(id, StepStateNames.Failed, RollbackState.RollingBackForce);

                NodeList nodes = ActionTest.GetNodeListAsync().Result;
                TestabilityTrace.TraceSource.WriteInfo(MockClient.TraceType, "{0} - node info:", id);
                foreach (Node n in nodes)
                {
                    TestabilityTrace.TraceSource.WriteInfo(MockClient.TraceType, "    OperationId:{0} - NodeName{1}, NodeStatus:{2}, IsStopped:{3}", id, n.NodeName, n.NodeStatus, n.IsStopped);
                }

                Node targetNodeAfterTest = nodes.Where(n => n.NodeName == target.NodeName).FirstOrDefault();
                if (targetNodeAfterTest == null)
                {
                    throw new InvalidOperationException("target node was not found in query after test");
                }

                if (targetNodeAfterTest.IsStopped == false)
                {
                    throw new InvalidOperationException("target node should have IsStopped true, was false");
                }
            }
            else if (command == Command.StopNodeWithExceptionAndSuccessAfterRetries)
            {
                Guid id = MockClientCommandInfo[Command.StopNodeWithExceptionAndSuccessAfterRetries];

                // Inject a fault during the operation so that step "StepStateNames.MidPerformingActions" has to retry 3 times before succeeding
                ServiceInternalFaultInfo faultInfo = new ServiceInternalFaultInfo(
                    StepStateNames.MidPerformingActions,
                    ServiceInternalFaultType.ThrowThreeTimes);

                Node target = ActionTest.GetNodeWithFASSecondary().Result;
                TestabilityTrace.TraceSource.WriteInfo(MockClient.TraceType, "{0} stopping {1}:{2}", id, target.NodeName, target.NodeInstanceId);
                task = this.messageProcessor.ProcessStopNodeCommandAsync(id, target.NodeName, target.NodeInstanceId, 999, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.CompletedSuccessfully, RollbackState.NotRollingBack);

                // Start the stopped node
                task = this.messageProcessor.ProcessStartNodeCommandAsync(Guid.NewGuid(), target.NodeName, target.NodeInstanceId, FASConstants.DefaultTestTimeout, faultInfo);
                this.WaitForState(id, StepStateNames.CompletedSuccessfully, RollbackState.NotRollingBack);
            }
            else
            {
                ReleaseAssert.Failfast("Unexpected command");
            }

            return(task);
        }
        private async Task ProcessCompletedActionsAsync(CancellationToken cancellationToken)
        {
            // Look for completed tasks and remove them and move into the historical table.  If the task failed, mark it
            while (!cancellationToken.IsCancellationRequested)
            {
                try
                {
                    while (this.pendingTasks.Count != 0)
                    {
                        cancellationToken.ThrowIfCancellationRequested();

                        // find the things in terminal finished state, process accordingly, call release on semaphore
                        KeyValuePair <Guid, ActionCompletionInfo> kv = this.pendingTasks.Where(p => p.Value.Task.Status == TaskStatus.RanToCompletion).FirstOrDefault();
                        if (!kv.Equals(default(KeyValuePair <Guid, ActionCompletionInfo>)))
                        {
                            TestabilityTrace.TraceSource.WriteInfo(TraceType, "Fetched a completed action key={0}", kv.Key);
                            ActionCompletionInfo info;
                            if (!this.pendingTasks.TryRemove(kv.Key, out info))
                            {
                                // This should never happen?
                                TestabilityTrace.TraceSource.WriteError(TraceType, "Removal of key={0} failed", kv.Key);
                                ReleaseAssert.Failfast("Removal of key={0} failed", kv.Key);
                            }
                            else
                            {
                                TestabilityTrace.TraceSource.WriteInfo(TraceType, "Key={0} removed successfully", kv.Key);

                                try
                                {
                                    info.Semaphore.Release();
                                }
                                catch (ObjectDisposedException ode)
                                {
                                    if ((ode.Message == "The semaphore has been disposed.") && (this.isShuttingDown > 0))
                                    {
                                        break;
                                    }

                                    throw;
                                }
                            }
                        }
                        else
                        {
                            TestabilityTrace.TraceSource.WriteNoise(TraceType, "Nothing to remove yet");
                        }
                    }

                    await Task.Delay(TimeSpan.FromSeconds(1), cancellationToken).ConfigureAwait(false);

                    FaultAnalysisServiceMessageProcessor.CheckForInvalidStatus(this.pendingTasks);
                }
                catch (OperationCanceledException)
                {
                    throw;
                }
                catch (Exception e)
                {
                    // This shouldn't be reached
                    TestabilityTrace.TraceSource.WriteError(TraceType, "ProcessCompletedActionsAsync caught {0}", e.ToString());
                    ReleaseAssert.Failfast("ProcessCompletedActionsAsync caught {0}", e.ToString());
                }
            }
        }
        // Launched as a task
        private async Task ConsumeAndRunActionsAsync(CancellationToken cancellationToken)
        {
            TestabilityTrace.TraceSource.WriteInfo(TraceType, "Enter ConsumeAndRunActions");

            using (SemaphoreSlim semaphore = new SemaphoreSlim(this.concurrentRequests, this.concurrentRequests))
            {
                while (!cancellationToken.IsCancellationRequested)
                {
                    try
                    {
                        TestabilityTrace.TraceSource.WriteNoise(TraceType, "DEBUG Waiting for semaphore, max count={0}", this.concurrentRequests);
                        await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);

                        TestabilityTrace.TraceSource.WriteNoise(TraceType, "DEBUG Done waiting for semaphore");
                    }
                    catch (OperationCanceledException e)
                    {
                        TestabilityTrace.TraceSource.WriteWarning(TraceType, e.ToString());
                        break;
                    }

                    ActionStateBase actionState   = null;
                    bool            wasSuccessful = false;
                    try
                    {
                        TestabilityTrace.TraceSource.WriteNoise(TraceType, "Trying to Dequeue");

                        wasSuccessful = this.queue.TryTake(out actionState);
                        if (!wasSuccessful)
                        {
                            TestabilityTrace.TraceSource.WriteNoise(TraceType, "Queue was empty");
                            semaphore.Release();
                            await Task.Delay(TimeSpan.FromSeconds(1), cancellationToken);

                            continue;
                        }

                        TestabilityTrace.TraceSource.WriteNoise(TraceType, "Dequeued Name={0} Key={1}", actionState.ActionType, actionState.OperationId);
                    }
                    catch (OperationCanceledException e)
                    {
                        TestabilityTrace.TraceSource.WriteWarning(TraceType, e.ToString());
                        break;
                    }
                    catch (Exception ex)
                    {
                        TestabilityTrace.TraceSource.WriteWarning(TraceType, "TryDequeue failed with={0}", ex.ToString());
                        semaphore.Release();
                        continue;
                    }

                    Task t = null;
                    try
                    {
                        System.Fabric.FaultAnalysis.Service.Actions.FabricTestAction action = await this.ConstructActionAsync(actionState.ActionType, actionState);

                        t = this.engine.RunAsync(this.fabricClient, action, actionState, actionState.ServiceInternalFaultInfo, cancellationToken);
                    }
                    catch (FabricNotPrimaryException notPrimary)
                    {
                        FaultAnalysisServiceUtility.TraceFabricNotPrimary(actionState.OperationId, notPrimary);
                        break;
                    }
                    catch (FabricObjectClosedException objectClosed)
                    {
                        FaultAnalysisServiceUtility.TraceFabricObjectClosed(actionState.OperationId, objectClosed);
                        break;
                    }

                    if (!this.pendingTasks.TryAdd(actionState.OperationId, new ActionCompletionInfo(actionState.OperationId, t, semaphore)))
                    {
                        TestabilityTrace.TraceSource.WriteError(TraceType, "Add of key={0} failed, was it already added?", actionState.OperationId);
                        ReleaseAssert.Failfast("Add of key={0} failed, was it already added?", actionState.OperationId);
                    }
                    else
                    {
                        TestabilityTrace.TraceSource.WriteInfo(TraceType, "Action type={0}, key={1} started", actionState.ActionType, actionState.OperationId);
                    }

                    Interlocked.Increment(ref this.isShuttingDown);
                }

                TestabilityTrace.TraceSource.WriteWarning(TraceType, "Cancellation was requested");

                return;
            }
        }