protected override IAsyncResult BeginTryCommand(InstancePersistenceContext context, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
StructuredTracer.Correlate();
try
{
if (command is SaveWorkflowCommand)
{
return new TypedCompletedAsyncResult<bool>(SaveWorkflow(context, (SaveWorkflowCommand)command), callback, state);
}
else if (command is LoadWorkflowCommand)
{
return new TypedCompletedAsyncResult<bool>(LoadWorkflow(context, (LoadWorkflowCommand)command), callback, state);
}
else if (command is CreateWorkflowOwnerCommand)
{
return new TypedCompletedAsyncResult<bool>(CreateWorkflowOwner(context, (CreateWorkflowOwnerCommand)command), callback, state);
}
else if (command is DeleteWorkflowOwnerCommand)
{
return new TypedCompletedAsyncResult<bool>(DeleteWorkflowOwner(context, (DeleteWorkflowOwnerCommand)command), callback, state);
}
return new TypedCompletedAsyncResult<bool>(false, callback, state);
}
catch (Exception e)
{
return new TypedCompletedAsyncResult<Exception>(e, callback, state);
}
}
//The persistence engine will send a variety of commands to the configured InstanceStore,
//such as CreateWorkflowOwnerCommand, SaveWorkflowCommand, and LoadWorkflowCommand.
//This method is where we will handle those commands
protected override IAsyncResult BeginTryCommand(InstancePersistenceContext context, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
IDictionary<XName, InstanceValue> data;
//The CreateWorkflowOwner command instructs the instance store to create a new instance owner bound to the instanace handle
if (command is CreateWorkflowOwnerCommand)
{
context.BindInstanceOwner(this.ownerInstanceId, Guid.NewGuid());
}
//The SaveWorkflow command instructs the instance store to modify the instance bound to the instance handle or an instance key
else if (command is SaveWorkflowCommand)
{
var saveCommand = (SaveWorkflowCommand)command;
data = saveCommand.InstanceData;
this.Save(data);
}
//The LoadWorkflow command instructs the instance store to lock and load the instance bound to the identifier in the instance handle
else if (command is LoadWorkflowCommand)
{
var fileName = IoHelper.GetFileName(this.ownerInstanceId);
using (var inputStream = new FileStream(fileName, FileMode.Open))
{
data = LoadInstanceDataFromFile(inputStream);
//load the data into the persistence Context
context.LoadedInstance(InstanceState.Initialized, data, null, null, null);
}
}
return new CompletedAsyncResult<bool>(true, callback, state);
}
public IAsyncResult BeginExecute(InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
IAsyncResult result;
if (command == null)
{
throw Fx.Exception.ArgumentNull("command");
}
this.ThrowIfNotActive("BeginExecute");
try
{
this.ReconcileTransaction();
result = new ExecuteAsyncResult(this, command, timeout, callback, state);
}
catch (TimeoutException)
{
this.InstanceHandle.Free();
throw;
}
catch (OperationCanceledException)
{
this.InstanceHandle.Free();
throw;
}
return result;
}
protected override IAsyncResult BeginTryCommand(InstancePersistenceContext context, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
if(context == null) throw new ArgumentNullException("context");
if(command == null) throw new ArgumentNullException("command");
// Log which commands we are receiving
Debug.WriteLine("InstanceStore::BeginTryCommand::{0} received", command.GetType().Name);
IAsyncResult result = null;
// validate the store lock
if (command is CreateWorkflowOwnerCommand)
{
result = CreateWorkflowOwner(context, (CreateWorkflowOwnerCommand) command, timeout, callback, state);
}
if (result == null)
{
// Log which commands we are not handling
Debug.WriteLine("InstanceStore::BeginTryCommand::{0} was not implemented", command.GetType().Name);
// The base.BeginTryCommand will return a false (unhandled) return value
return base.BeginTryCommand(context, command, timeout, callback, state);
}
return result;
}
public TryLoadRunnableWorkflowAsyncResult(InstancePersistenceContext context, InstancePersistenceCommand command, SqlWorkflowInstanceStore store, SqlWorkflowInstanceStoreLock storeLock, Transaction currentTransaction, TimeSpan timeout, AsyncCallback callback, object state) : base(context, command, store, storeLock, currentTransaction, timeout, callback, state)
{
if (base.Store.WorkflowHostType == Guid.Empty)
{
throw FxTrace.Exception.AsError(new InstancePersistenceCommandException(command.Name, System.Activities.DurableInstancing.SR.TryLoadRequiresWorkflowType, null));
}
}
public SaveWorkflowAsyncResult(InstancePersistenceContext context, InstancePersistenceCommand command, SqlWorkflowInstanceStore store, SqlWorkflowInstanceStoreLock storeLock, Transaction currentTransaction, TimeSpan timeout, AsyncCallback callback, object state) : base(context, command, store, storeLock, currentTransaction, timeout, callback, state)
{
if (((SaveWorkflowCommand) command).InstanceKeyMetadataChanges.Count > 0)
{
throw FxTrace.Exception.AsError(new InstancePersistenceCommandException(System.Activities.DurableInstancing.SR.InstanceKeyMetadataChangesNotSupported));
}
}
public IAsyncResult BeginExecute(InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
if (execute_delegate == null)
{
execute_delegate = new Action <InstancePersistenceCommand, TimeSpan> (Execute);
}
return(execute_delegate.BeginInvoke(command, timeout, callback, state));
}
public IAsyncResult BeginExecute(InstanceHandle handle, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
if (execute_delegate == null)
{
execute_delegate = new Func <InstanceHandle, InstancePersistenceCommand, TimeSpan, InstanceView> (Execute);
}
return(execute_delegate.BeginInvoke(handle, command, timeout, callback, state));
}
internal IAsyncResult BeginTryCommandInternal(InstancePersistenceContext context, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
SqlWorkflowInstanceStoreAsyncResult result = null;
if (command is SaveWorkflowCommand)
{
result = new SaveWorkflowAsyncResult(context, command, this, this.storeLock, Transaction.Current, timeout, callback, state);
}
else if (command is TryLoadRunnableWorkflowCommand)
{
result = new TryLoadRunnableWorkflowAsyncResult(context, command, this, this.storeLock, Transaction.Current, timeout, callback, state);
}
else if (command is LoadWorkflowCommand)
{
result = new LoadWorkflowAsyncResult(context, command, this, this.storeLock, Transaction.Current, timeout, callback, state);
}
else if (command is LoadWorkflowByInstanceKeyCommand)
{
result = new LoadWorkflowByKeyAsyncResult(context, command, this, this.storeLock, Transaction.Current, timeout, callback, state);
}
else if (command is ExtendLockCommand)
{
result = new ExtendLockAsyncResult(null, command, this, this.storeLock, null, timeout, callback, state);
}
else if (command is DetectRunnableInstancesCommand)
{
result = new DetectRunnableInstancesAsyncResult(null, command, this, this.storeLock, null, timeout, callback, state);
}
else if (command is DetectActivatableWorkflowsCommand)
{
result = new DetectActivatableWorkflowsAsyncResult(null, command, this, this.storeLock, null, timeout, callback, state);
}
else if (command is RecoverInstanceLocksCommand)
{
result = new RecoverInstanceLocksAsyncResult(null, command, this, this.storeLock, null, timeout, callback, state);
}
else if (command is UnlockInstanceCommand)
{
result = new UnlockInstanceAsyncResult(null, command, this, this.storeLock, Transaction.Current, timeout, callback, state);
}
else if (command is CreateWorkflowOwnerCommand)
{
result = new CreateWorkflowOwnerAsyncResult(context, command, this, this.storeLock, Transaction.Current, timeout, callback, state);
}
else if (command is DeleteWorkflowOwnerCommand)
{
result = new DeleteWorkflowOwnerAsyncResult(context, command, this, this.storeLock, Transaction.Current, timeout, callback, state);
}
else if (command is QueryActivatableWorkflowsCommand)
{
result = new QueryActivatableWorkflowAsyncResult(context, command, this, this.storeLock, Transaction.Current, timeout, callback, state);
}
else
{
return base.BeginTryCommand(context, command, timeout, callback, state);
}
result.ScheduleCallback();
return result;
}
protected override IAsyncResult BeginTryCommand(
InstancePersistenceContext context,
InstancePersistenceCommand command,
TimeSpan timeout, AsyncCallback callback, object state)
{
switch(command.GetType().Name)
{
case "CreateWorkflowOwnerCommand":
Func<Exception> createFunc = () => ProcessCreateWorkflowOwner(context,
command as CreateWorkflowOwnerCommand);
return createFunc.BeginInvoke(ar =>
{
Exception ex = createFunc.EndInvoke(ar);
callback(new InstanceStoreAsyncResult(ar, ex));
}, state);
case "LoadWorkflowCommand":
Func<Exception> loadFunc = () => ProcessLoadWorkflow(context,
command as LoadWorkflowCommand);
return loadFunc.BeginInvoke(ar =>
{
Exception ex = loadFunc.EndInvoke(ar);
callback(new InstanceStoreAsyncResult(ar, ex));
}, state);
case "LoadWorkflowByInstanceKeyCommand":
Func<Exception> loadByKeyFunc = () => ProcessLoadWorkflowByInstanceKey(context,
command as LoadWorkflowByInstanceKeyCommand);
return loadByKeyFunc.BeginInvoke(ar =>
{
Exception ex = loadByKeyFunc.EndInvoke(ar);
callback(new InstanceStoreAsyncResult(ar, ex));
}, state);
case "SaveWorkflowCommand":
Func<Exception> saveFunc = () => ProcessSaveWorkflow(context,
command as SaveWorkflowCommand);
return saveFunc.BeginInvoke(ar =>
{
Exception ex = saveFunc.EndInvoke(ar);
callback(new InstanceStoreAsyncResult(ar, ex));
}, state);
default:
return base.BeginTryCommand(
context, command, timeout, callback, state);
}
}
public PersistenceTask(SqlWorkflowInstanceStore store, SqlWorkflowInstanceStoreLock storeLock, InstancePersistenceCommand instancePersistenceCommand, TimeSpan taskInterval, bool automaticallyResetTimer)
{
this.automaticallyResetTimer = automaticallyResetTimer;
this.commandCompletedCallback = Fx.ThunkCallback(new AsyncCallback(this.CommandCompletedCallback));
this.instancePersistenceCommand = instancePersistenceCommand;
this.Store = store;
this.StoreLock = storeLock;
this.SurrogateLockOwnerId = this.StoreLock.SurrogateLockOwnerId;
this.taskInterval = taskInterval;
this.thisLock = new object();
}
public LoadRetryAsyncResult(SqlWorkflowInstanceStore store, InstancePersistenceContext context,
InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
: base(callback, state)
{
this.InstanceStore = store;
this.InstancePersistenceContext = context;
this.InstancePersistenceCommand = command;
this.commandTimeout = new TimeoutHelper(timeout);
InstanceStore.BeginTryCommandInternal(this.InstancePersistenceContext, this.InstancePersistenceCommand,
this.commandTimeout.RemainingTime(), LoadRetryAsyncResult.onTryCommandCallback, this);
}
public ExtendLockAsyncResult
(
InstancePersistenceContext context,
InstancePersistenceCommand command,
SqlWorkflowInstanceStore store,
SqlWorkflowInstanceStoreLock storeLock,
Transaction currentTransaction,
TimeSpan timeout,
AsyncCallback callback,
object state
) :
base(context, command, store, storeLock, currentTransaction, timeout, int.MaxValue, callback, state)
{
}
protected SqlWorkflowInstanceStoreAsyncResult
(
InstancePersistenceContext context,
InstancePersistenceCommand command,
SqlWorkflowInstanceStore store,
SqlWorkflowInstanceStoreLock storeLock,
Transaction currentTransaction,
TimeSpan timeout,
AsyncCallback callback,
object state
)
: this(context, command, store, storeLock, currentTransaction, timeout, store.MaxConnectionRetries, callback, state)
{
}
public DetectActivatableWorkflowsAsyncResult
(
InstancePersistenceContext context,
InstancePersistenceCommand command,
SqlWorkflowInstanceStore store,
SqlWorkflowInstanceStoreLock storeLock,
Transaction currentTransaction,
TimeSpan timeout,
AsyncCallback callback,
object state
) :
base(context, command, store, storeLock, currentTransaction, timeout, callback, state)
{
}
public TestDatabaseVersionAndRunAsyncResult(
InstancePersistenceContext context,
InstancePersistenceCommand command,
SqlWorkflowInstanceStore store,
SqlWorkflowInstanceStoreLock storeLock,
Transaction currentTransaction,
TimeSpan timeout,
Version targetVersion,
AsyncCallback callback,
object state) :
base(context, command, store, storeLock, currentTransaction, timeout, callback, state)
{
this.currentTransaction = currentTransaction;
this.targetVersion = targetVersion;
}
public LoadWorkflowAsyncResult
(
InstancePersistenceContext context,
InstancePersistenceCommand command,
SqlWorkflowInstanceStore store,
SqlWorkflowInstanceStoreLock storeLock,
Transaction currentTransaction,
TimeSpan timeout,
AsyncCallback callback,
object state
) :
base(context, command, store, storeLock, currentTransaction, timeout, callback, state)
{
this.associatedInstanceKeys = new Dictionary<Guid, IDictionary<XName, InstanceValue>>();
this.completedInstanceKeys = new Dictionary<Guid, IDictionary<XName, InstanceValue>>();
this.objectSerializer = ObjectSerializerFactory.GetDefaultObjectSerializer();
}
public IAsyncResult BeginExecute(InstanceHandle handle, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
if (command == null)
{
throw Fx.Exception.ArgumentNull("command");
}
if (handle == null)
{
throw Fx.Exception.ArgumentNull("handle");
}
if (!object.ReferenceEquals(this, handle.Store))
{
throw Fx.Exception.Argument("handle", SRCore.ContextNotFromThisStore);
}
TimeoutHelper.ThrowIfNegativeArgument(timeout);
return(InstancePersistenceContext.BeginOuterExecute(handle, command, Transaction.Current, timeout, callback, state));
}
public IAsyncResult BeginExecute(InstanceHandle handle, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
if (command == null)
{
throw Fx.Exception.ArgumentNull("command");
}
if (handle == null)
{
throw Fx.Exception.ArgumentNull("handle");
}
if (!object.ReferenceEquals(this, handle.Store))
{
throw Fx.Exception.Argument("handle", SRCore.ContextNotFromThisStore);
}
TimeoutHelper.ThrowIfNegativeArgument(timeout);
return InstancePersistenceContext.BeginOuterExecute(handle, command, Transaction.Current, timeout, callback, state);
}
protected internal override IAsyncResult BeginTryCommand(InstancePersistenceContext context, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
if (context == null)
{
throw FxTrace.Exception.ArgumentNull("context");
}
if (command == null)
{
throw FxTrace.Exception.ArgumentNull("command");
}
if (!this.storeLock.IsValid && !(command is CreateWorkflowOwnerCommand))
{
throw FxTrace.Exception.AsError(new InstanceOwnerException(command.Name, this.storeLock.LockOwnerId));
}
if (this.IsRetryCommand(command))
{
return new LoadRetryAsyncResult(this, context, command, timeout, callback, state);
}
return this.BeginTryCommandInternal(context, command, timeout, callback, state);
}
// ExtendLockAsyncResult and RecoverInstanceLocksAsyncResult directly call this ctor
protected SqlWorkflowInstanceStoreAsyncResult
(
InstancePersistenceContext context,
InstancePersistenceCommand command,
SqlWorkflowInstanceStore store,
SqlWorkflowInstanceStoreLock storeLock,
Transaction currentTransaction,
TimeSpan timeout,
int maximumRetries,
AsyncCallback callback,
object state
) :
base(callback, state)
{
this.DependentTransaction = (currentTransaction != null) ? currentTransaction.DependentClone(DependentCloneOption.BlockCommitUntilComplete) : null;
this.InstancePersistenceContext = context;
this.InstancePersistenceCommand = command;
this.Store = store;
this.StoreLock = storeLock;
this.TimeoutHelper = new TimeoutHelper(timeout);
this.OnCompleting += SqlWorkflowInstanceStoreAsyncResult.finallyCallback;
this.maximumRetries = maximumRetries;
}
public void Execute(InstancePersistenceCommand command, TimeSpan timeout)
{
if (command == null)
{
throw Fx.Exception.ArgumentNull("command");
}
ThrowIfNotActive("Execute");
try
{
ReconcileTransaction();
ExecuteAsyncResult.End(new ExecuteAsyncResult(this, command, timeout));
}
catch (TimeoutException)
{
InstanceHandle.Free();
throw;
}
catch (OperationCanceledException)
{
InstanceHandle.Free();
throw;
}
}
public InstanceView Execute(InstanceHandle handle, InstancePersistenceCommand command, TimeSpan timeout)
{
throw new NotImplementedException();
}
protected internal virtual IAsyncResult BeginTryCommand(InstancePersistenceContext context, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
if (try_command_delegate == null)
{
try_command_delegate = new Func <InstancePersistenceContext, InstancePersistenceCommand, TimeSpan, bool> (TryCommand);
}
return(try_command_delegate.BeginInvoke(context, command, timeout, callback, state));
}
protected internal virtual IAsyncResult BeginTryCommand(InstancePersistenceContext context, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
return(new CompletedAsyncResult <bool>(false, callback, state));
}
private bool IsRetryCommand(InstancePersistenceCommand command)
{
if (!this.IsLockRetryEnabled())
{
return false;
}
return ((command is LoadWorkflowByInstanceKeyCommand) || (command is LoadWorkflowCommand));
}
public IAsyncResult BeginExecute (InstanceHandle handle, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
if (execute_delegate == null)
execute_delegate = new Func<InstanceHandle, InstancePersistenceCommand, TimeSpan, InstanceView> (Execute);
return execute_delegate.BeginInvoke (handle, command, timeout, callback, state);
}
protected internal virtual bool TryCommand(InstancePersistenceContext context, InstancePersistenceCommand command, TimeSpan timeout)
{
return(EndTryCommand(BeginTryCommand(context, command, timeout, null, null)));
}
public ExecuteAsyncResult(InstanceHandle initialInstanceHandle, InstancePersistenceCommand command, Transaction transaction, TimeSpan timeout, AsyncCallback callback, object state)
: this(command, timeout, callback, state)
{
this.initialInstanceHandle = initialInstanceHandle;
OnCompleting = new Action<AsyncResult, Exception>(SimpleCleanup);
IAsyncResult result = this.initialInstanceHandle.BeginAcquireExecutionContext(transaction, this.timeoutHelper.RemainingTime(), PrepareAsyncCompletion(ExecuteAsyncResult.onAcquireContext), this);
if (result.CompletedSynchronously)
{
// After this stage, must complete explicitly in order to get Cleanup to run correctly.
bool completeSelf = false;
Exception completionException = null;
try
{
completeSelf = OnAcquireContext(result);
}
catch (Exception exception)
{
if (Fx.IsFatal(exception))
{
throw;
}
completeSelf = true;
completionException = exception;
}
if (completeSelf)
{
Complete(true, completionException);
}
}
}
public ExecuteAsyncResult(InstancePersistenceContext context, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
: this(command, timeout, callback, state)
{
this.context = context;
this.priorAsyncResult = this.context.LastAsyncResult;
Fx.Assert(this.priorAsyncResult != null, "The LastAsyncResult should already have been checked.");
this.priorAsyncResult.executeCalledByCurrentCommand = true;
OnCompleting = new Action<AsyncResult, Exception>(SimpleCleanup);
bool completeSelf = false;
bool success = false;
try
{
this.context.LastAsyncResult = this;
if (RunLoop())
{
completeSelf = true;
}
success = true;
}
finally
{
if (!success)
{
this.context.LastAsyncResult = this.priorAsyncResult;
}
}
if (completeSelf)
{
Complete(true);
}
}
protected SqlWorkflowInstanceStoreAsyncResult(System.Runtime.DurableInstancing.InstancePersistenceContext context, System.Runtime.DurableInstancing.InstancePersistenceCommand command, SqlWorkflowInstanceStore store, SqlWorkflowInstanceStoreLock storeLock, Transaction currentTransaction, TimeSpan timeout, AsyncCallback callback, object state) : base(callback, state)
{
this.DependentTransaction = (currentTransaction != null) ? currentTransaction.DependentClone(DependentCloneOption.BlockCommitUntilComplete) : null;
this.InstancePersistenceContext = context;
this.InstancePersistenceCommand = command;
this.Store = store;
this.StoreLock = storeLock;
this.TimeoutHelper = new System.Runtime.TimeoutHelper(timeout);
base.OnCompleting = (Action <AsyncResult, Exception>)Delegate.Combine(base.OnCompleting, finallyCallback);
}
protected internal virtual IAsyncResult BeginTryCommand (InstancePersistenceContext context, InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
{
if (try_command_delegate == null)
try_command_delegate = new Func<InstancePersistenceContext, InstancePersistenceCommand, TimeSpan, bool> (TryCommand);
return try_command_delegate.BeginInvoke (context, command, timeout, callback, state);
}
public InstanceView Execute (InstanceHandle handle, InstancePersistenceCommand command, TimeSpan timeout)
{
throw new NotImplementedException ();
}
ExecuteAsyncResult(InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state)
: base(callback, state)
{
this.executionStack = new Stack<IEnumerator<InstancePersistenceCommand>>(2);
this.timeoutHelper = new TimeoutHelper(timeout);
this.currentExecution = (new List<InstancePersistenceCommand> { command }).GetEnumerator();
}
public ExecuteAsyncResult(InstancePersistenceContext context, InstancePersistenceCommand command, TimeSpan timeout)
: this(command, timeout, null, null)
{
this.context = context;
this.priorAsyncResult = this.context.LastAsyncResult;
Fx.Assert(this.priorAsyncResult != null, "The LastAsyncResult should already have been checked.");
this.priorAsyncResult.executeCalledByCurrentCommand = true;
bool success = false;
try
{
this.context.LastAsyncResult = this;
RunLoopCore(true);
success = true;
}
finally
{
this.context.LastAsyncResult = this.priorAsyncResult;
if (!success && this.context.IsHandleDoomedByRollback)
{
this.context.InstanceHandle.Free();
}
}
Complete(true);
}
public void Execute(InstancePersistenceCommand command, TimeSpan timeout)
{
throw new NotImplementedException();
}
internal static InstanceView OuterExecute(InstanceHandle initialInstanceHandle, InstancePersistenceCommand command, Transaction transaction, TimeSpan timeout)
{
try
{
return ExecuteAsyncResult.End(new ExecuteAsyncResult(initialInstanceHandle, command, transaction, timeout));
}
catch (TimeoutException)
{
initialInstanceHandle.Free();
throw;
}
catch (OperationCanceledException)
{
initialInstanceHandle.Free();
throw;
}
}
internal static IAsyncResult BeginOuterExecute(InstanceHandle initialInstanceHandle, InstancePersistenceCommand command, Transaction transaction, TimeSpan timeout, AsyncCallback callback, object state)
{
try
{
return new ExecuteAsyncResult(initialInstanceHandle, command, transaction, timeout, callback, state);
}
catch (TimeoutException)
{
initialInstanceHandle.Free();
throw;
}
catch (OperationCanceledException)
{
initialInstanceHandle.Free();
throw;
}
}
protected internal virtual bool TryCommand(InstancePersistenceContext context, InstancePersistenceCommand command, TimeSpan timeout)
{
throw new NotImplementedException();
}
public LoadRetryAsyncResult(SqlWorkflowInstanceStore store, System.Runtime.DurableInstancing.InstancePersistenceContext context, System.Runtime.DurableInstancing.InstancePersistenceCommand command, TimeSpan timeout, AsyncCallback callback, object state) : base(callback, state)
{
this.InstanceStore = store;
this.InstancePersistenceContext = context;
this.InstancePersistenceCommand = command;
this.commandTimeout = new TimeoutHelper(timeout);
this.InstanceStore.BeginTryCommandInternal(this.InstancePersistenceContext, this.InstancePersistenceCommand, this.commandTimeout.RemainingTime(), onTryCommandCallback, this);
}
public ExecuteAsyncResult(InstanceHandle initialInstanceHandle, InstancePersistenceCommand command, Transaction transaction, TimeSpan timeout)
: this(command, timeout, null, null)
{
this.initialInstanceHandle = initialInstanceHandle;
this.context = this.initialInstanceHandle.AcquireExecutionContext(transaction, this.timeoutHelper.RemainingTime());
Exception completionException = null;
try
{
// After this stage, must complete explicitly in order to get Cleanup to run correctly.
this.context.RootAsyncResult = this;
this.context.LastAsyncResult = this;
OnCompleting = new Action<AsyncResult, Exception>(Cleanup);
RunLoopCore(true);
if (this.transactionToCommit != null)
{
try
{
this.transactionToCommit.Commit();
}
catch (TransactionException)
{
// Since we are enlisted in this transaction, we can ignore exceptions from Commit.
}
this.transactionToCommit = null;
}
DoWaitForTransaction(true);
}
catch (Exception exception)
{
if (Fx.IsFatal(exception))
{
throw;
}
completionException = exception;
}
Complete(true, completionException);
}
