internal DurableInstanceManager(WorkflowServiceHost host)
{
this.DurableInstancingOptions = new System.ServiceModel.Activities.DurableInstancingOptions(this);
this.createOwnerCommand = new CreateWorkflowOwnerCommand();
this.instanceMetadataChanges = new Dictionary<XName, InstanceValue>();
this.thisLock = new object();
InstanceValue value2 = new InstanceValue(XNamespace.Get("http://tempuri.org").GetName("Sentinel"));
this.createOwnerCommand.InstanceOwnerMetadata.Add(WorkflowNamespace.WorkflowHostType, value2);
this.instanceMetadataChanges.Add(WorkflowNamespace.WorkflowHostType, value2);
this.instanceMetadataChanges.Add(PersistenceMetadataNamespace.InstanceType, new InstanceValue(WorkflowNamespace.WorkflowHostType, InstanceValueOptions.WriteOnly));
this.Host = host;
}
internal DurableInstanceManager(WorkflowServiceHost host)
{
DurableInstancingOptions = new DurableInstancingOptions(this);
this.instanceOwnerMetadata = new Dictionary<XName, InstanceValue>();
this.instanceMetadataChanges = new Dictionary<XName, InstanceValue>();
this.thisLock = new object();
// This is for collision detection. Will replace with the real service name prior to executing.
InstanceValue sentinel = new InstanceValue(XNamespace.Get("http://tempuri.org").GetName("Sentinel"));
this.instanceOwnerMetadata.Add(WorkflowNamespace.WorkflowHostType, sentinel);
this.instanceMetadataChanges.Add(WorkflowNamespace.WorkflowHostType, sentinel);
this.instanceMetadataChanges.Add(PersistenceMetadataNamespace.InstanceType, new InstanceValue(WorkflowNamespace.WorkflowHostType, InstanceValueOptions.WriteOnly));
this.Host = host;
}
static InstanceStore CreateInstanceStore()
{
string connectionString = ConfigurationManager.ConnectionStrings["InstanceStore"].ConnectionString;
var instanceStore = new SqlWorkflowInstanceStore(connectionString);
var instanceHandle = instanceStore.CreateInstanceHandle();
var ownerCommand = new CreateWorkflowOwnerCommand();
XNamespace hostNamespace = XNamespace.Get("urn:schemas-microsoft-com:System.Activities/4.0/properties");
XName hostKey = hostNamespace.GetName("WorkflowHostType");
var hostValue = new InstanceValue(XNamespace.Get("http://tempuri.org").GetName("SampleInstance"));
ownerCommand.InstanceOwnerMetadata.Add(hostKey, hostValue);
instanceStore.DefaultInstanceOwner = instanceStore.Execute(
instanceHandle,
ownerCommand,
TimeSpan.FromSeconds(30)).InstanceOwner;
instanceHandle.Free();
return instanceStore;
}
public static bool IsPropertyTypeSqlVariantCompatible(InstanceValue value)
{
if ((value.IsDeletedValue) ||
(value.Value == null) ||
(value.Value is string && ((string)value.Value).Length <= 4000) ||
(value.Value is Guid) ||
(value.Value is DateTime) ||
(value.Value is int) ||
(value.Value is double) ||
(value.Value is float) ||
(value.Value is long) ||
(value.Value is short) ||
(value.Value is byte) ||
(value.Value is decimal && CanDecimalBeStoredAsSqlVariant((decimal)value.Value)))
{
return true;
}
else
{
return false;
}
}
public static bool IsWriteOnly(this InstanceValue value)
{
return((value.Options & InstanceValueOptions.WriteOnly) != 0);
}
public static bool IsOptional(this InstanceValue value)
{
return((value.Options & InstanceValueOptions.Optional) != 0);
}
private void LoadSingleEntry(NetDataContractSerializer serializer, IDictionary<XName, InstanceValue> instanceData, XElement entry)
{
XName key =
(XName)Deserialize(serializer, entry.Element("Key"));
Object value =
Deserialize(serializer, entry.Element("Value"));
InstanceValue iv = new InstanceValue(value);
InstanceValueOptions options =
(InstanceValueOptions)Deserialize(
serializer, entry.Element("Options"));
if(!options.HasFlag(InstanceValueOptions.WriteOnly))
{
instanceData.Add(key, iv);
}
}
public void WroteInstanceKeyMetadataValue (Guid key, XName name, InstanceValue value)
{
throw new NotImplementedException ();
}
public void WroteInstanceOwnerMetadataValue(XName name, InstanceValue value)
{
throw new NotImplementedException();
}
public void WroteInstanceOwnerMetadataValue(XName name, InstanceValue value)
{
if (name == null)
{
throw Fx.Exception.ArgumentNull("name");
}
if (value == null)
{
throw Fx.Exception.ArgumentNull("value");
}
ThrowIfNoOwner();
ThrowIfNotTransactional("WroteInstanceOwnerMetadataValue");
InstanceView.AccumulatedOwnerMetadataWrites.Add(name, value);
}
public void WroteInstanceMetadataValue(XName name, InstanceValue value)
{
if (name == null)
{
throw Fx.Exception.ArgumentNull("name");
}
if (value == null)
{
throw Fx.Exception.ArgumentNull("value");
}
ThrowIfNotLocked();
ThrowIfCompleted();
ThrowIfNotTransactional("WroteInstanceMetadataValue");
InstanceView.AccumulatedMetadataWrites[name] = value;
}
public SerializableInstanceValue(InstanceValue instanceValue)
{
this.value = instanceValue.Value;
this.options = (int)instanceValue.Options;
}
//Reads data from xml file and creates a dictionary based off of that.
IDictionary<XName, InstanceValue> LoadInstanceDataFromFile(Stream inputStream)
{
IDictionary<XName, InstanceValue> data = new Dictionary<XName, InstanceValue>();
NetDataContractSerializer s = new NetDataContractSerializer();
XmlReader rdr = XmlReader.Create(inputStream);
XmlDocument doc = new XmlDocument();
doc.Load(rdr);
XmlNodeList instances = doc.GetElementsByTagName("InstanceValue");
foreach (XmlElement instanceElement in instances)
{
XmlElement keyElement = (XmlElement)instanceElement.SelectSingleNode("descendant::key");
XName key = (XName)DeserializeObject(s, keyElement);
XmlElement valueElement = (XmlElement)instanceElement.SelectSingleNode("descendant::value");
object value = DeserializeObject(s, valueElement);
InstanceValue instVal = new InstanceValue(value);
data.Add(key, instVal);
}
return data;
}
/// <summary>
/// The deserialize data.
/// </summary>
/// <param name="payload">The payload.</param>
/// <returns>The <see cref="IDictionary" />.</returns>
private static IDictionary<XName, InstanceValue> DeserializeData(string payload)
{
var xmlDocument = new XmlDocument();
xmlDocument.LoadXml(payload);
IDictionary<XName, InstanceValue> data = new Dictionary<XName, InstanceValue>();
var netDataContractSerializer = new NetDataContractSerializer();
var instances = xmlDocument.GetElementsByTagName("InstanceValue");
foreach (XmlElement instanceElement in instances)
{
var keyElement = (XmlElement)instanceElement.SelectSingleNode("descendant::key");
var key = (XName)DeserializeObject(netDataContractSerializer, keyElement);
var valueElement = (XmlElement)instanceElement.SelectSingleNode("descendant::value");
var value = DeserializeObject(netDataContractSerializer, valueElement);
var instVal = new InstanceValue(value);
data.Add(key, instVal);
}
return data;
}
private Dictionary<XName, InstanceValue> GeneratePersistenceData()
{
Dictionary<XName, InstanceValue> dictionary = new Dictionary<XName, InstanceValue>(10);
dictionary[WorkflowNamespace.Bookmarks] = new InstanceValue(base.Controller.GetBookmarks(), InstanceValueOptions.WriteOnly | InstanceValueOptions.Optional);
dictionary[WorkflowNamespace.LastUpdate] = new InstanceValue(DateTime.UtcNow, InstanceValueOptions.WriteOnly | InstanceValueOptions.Optional);
foreach (KeyValuePair<string, LocationInfo> pair in base.Controller.GetMappedVariables())
{
XName name = WorkflowNamespace.VariablesPath.GetName(pair.Key);
dictionary[name] = new InstanceValue(pair.Value, InstanceValueOptions.WriteOnly | InstanceValueOptions.Optional);
}
Fx.AssertAndThrow(base.Controller.State != WorkflowInstanceState.Aborted, "Cannot generate data for an aborted service instance.");
if (base.Controller.State != WorkflowInstanceState.Complete)
{
dictionary[WorkflowNamespace.Workflow] = new InstanceValue(base.Controller.PrepareForSerialization());
if (this.creationContext != null)
{
dictionary[WorkflowServiceNamespace.CreationContext] = new InstanceValue(this.creationContext);
}
dictionary[WorkflowNamespace.Status] = new InstanceValue((base.Controller.State == WorkflowInstanceState.Idle) ? "Idle" : "Executing", InstanceValueOptions.WriteOnly);
return dictionary;
}
dictionary[WorkflowNamespace.Workflow] = new InstanceValue(base.Controller.PrepareForSerialization(), InstanceValueOptions.Optional);
this.GetCompletionState();
if (this.completionState == ActivityInstanceState.Faulted)
{
dictionary[WorkflowNamespace.Status] = new InstanceValue("Faulted", InstanceValueOptions.WriteOnly);
dictionary[WorkflowNamespace.Exception] = new InstanceValue(this.terminationException, InstanceValueOptions.WriteOnly | InstanceValueOptions.Optional);
return dictionary;
}
if (this.completionState == ActivityInstanceState.Closed)
{
dictionary[WorkflowNamespace.Status] = new InstanceValue("Closed", InstanceValueOptions.WriteOnly);
if (this.workflowOutputs != null)
{
foreach (KeyValuePair<string, object> pair2 in this.workflowOutputs)
{
XName introduced13 = WorkflowNamespace.OutputPath.GetName(pair2.Key);
dictionary[introduced13] = new InstanceValue(pair2.Value, InstanceValueOptions.WriteOnly | InstanceValueOptions.Optional);
}
}
return dictionary;
}
Fx.AssertAndThrow(this.completionState == ActivityInstanceState.Canceled, "Cannot be executing a service instance when WorkflowState was completed.");
dictionary[WorkflowNamespace.Status] = new InstanceValue("Canceled", InstanceValueOptions.WriteOnly);
return dictionary;
}
static InstanceValue()
{
DeletedValue = new InstanceValue(null);
DeletedValue.Value = DeletedValue; // recursion!
}
public static bool IsPropertyTypeSqlVariantCompatible(InstanceValue value)
{
if (((!value.IsDeletedValue && (value.Value != null)) && (!(value.Value is string) || (((string) value.Value).Length > 0xfa0))) && (((!(value.Value is Guid) && !(value.Value is DateTime)) && (!(value.Value is int) && !(value.Value is double))) && ((!(value.Value is float) && !(value.Value is long)) && ((!(value.Value is short) && !(value.Value is byte)) && (!(value.Value is decimal) || !CanDecimalBeStoredAsSqlVariant((decimal) value.Value))))))
{
return false;
}
return true;
}
public void WroteInstanceKeyMetadataValue(Guid key, XName name, InstanceValue value)
{
if (key == Guid.Empty)
{
throw Fx.Exception.Argument("key", SRCore.InvalidKeyArgument);
}
if (name == null)
{
throw Fx.Exception.ArgumentNull("name");
}
if (value == null)
{
throw Fx.Exception.ArgumentNull("value");
}
ThrowIfNotLocked();
ThrowIfCompleted();
ThrowIfNotTransactional("WroteInstanceKeyMetadataValue");
InstanceKeyView keyView;
if (!InstanceView.InstanceKeys.TryGetValue(key, out keyView))
{
if (InstanceView.InstanceKeysConsistency == InstanceValueConsistency.None)
{
throw Fx.Exception.AsError(new InvalidOperationException(SRCore.KeyNotAssociated));
}
if (!value.IsWriteOnly() && !value.IsDeletedValue)
{
Dictionary<Guid, InstanceKeyView> copy = new Dictionary<Guid, InstanceKeyView>(InstanceView.InstanceKeys);
keyView = new InstanceKeyView(key);
keyView.AccumulatedMetadataWrites.Add(name, value);
keyView.InstanceKeyMetadataConsistency = InstanceValueConsistency.Partial;
copy[keyView.InstanceKey] = keyView;
InstanceView.InstanceKeys = new ReadOnlyDictionaryInternal<Guid, InstanceKeyView>(copy);
InstanceView.InstanceKeysConsistency |= InstanceValueConsistency.Partial;
}
}
else
{
keyView.AccumulatedMetadataWrites.Add(name, value);
}
}
public void WroteInstanceKeyMetadataValue(Guid key, XName name, InstanceValue value)
{
InstanceKeyView view;
if (key == Guid.Empty)
{
throw Fx.Exception.Argument("key", SRCore.InvalidKeyArgument);
}
if (name == null)
{
throw Fx.Exception.ArgumentNull("name");
}
if (value == null)
{
throw Fx.Exception.ArgumentNull("value");
}
this.ThrowIfNotLocked();
this.ThrowIfCompleted();
this.ThrowIfNotTransactional("WroteInstanceKeyMetadataValue");
if (!this.InstanceView.InstanceKeys.TryGetValue(key, out view))
{
if (this.InstanceView.InstanceKeysConsistency == InstanceValueConsistency.None)
{
throw Fx.Exception.AsError(new InvalidOperationException(SRCore.KeyNotAssociated));
}
if (!value.IsWriteOnly() && !value.IsDeletedValue)
{
Dictionary<Guid, InstanceKeyView> dictionary = new Dictionary<Guid, InstanceKeyView>(this.InstanceView.InstanceKeys);
view = new InstanceKeyView(key);
view.AccumulatedMetadataWrites.Add(name, value);
view.InstanceKeyMetadataConsistency = InstanceValueConsistency.Partial;
dictionary[view.InstanceKey] = view;
this.InstanceView.InstanceKeys = new ReadOnlyDictionary<Guid, InstanceKeyView>(dictionary, false);
System.Runtime.DurableInstancing.InstanceView instanceView = this.InstanceView;
instanceView.InstanceKeysConsistency |= InstanceValueConsistency.Partial;
}
}
else
{
view.AccumulatedMetadataWrites.Add(name, value);
}
}
public void WroteInstanceKeyMetadataValue(Guid key, XName name, InstanceValue value)
{
throw new NotImplementedException();
}
//Reads data from xml file and creates a dictionary based off of that.
static IDictionary<XName, InstanceValue> LoadInstanceDataFromFile(Stream inputStream)
{
IDictionary<XName, InstanceValue> data = new Dictionary<XName, InstanceValue>();
var serializer = new NetDataContractSerializer();
using (var xmlReader = XmlReader.Create(inputStream))
{
var doc = new XmlDocument();
doc.Load(xmlReader);
var instances = doc.GetElementsByTagName("InstanceValue");
foreach (XmlElement instanceElement in instances)
{
var keyElement = (XmlElement)instanceElement.SelectSingleNode("descendant::key");
var key = (XName)DeserializeObject(serializer, keyElement);
var valueElement = (XmlElement)instanceElement.SelectSingleNode("descendant::value");
var value = DeserializeObject(serializer, valueElement);
var instVal = new InstanceValue(value);
data.Add(key, instVal);
}
}
return data;
}
static InstanceValue ()
{
DeletedValue = new InstanceValue (null);
DeletedValue.Value = DeletedValue; // recursion!
}
public void WroteInstanceOwnerMetadataValue (XName name, InstanceValue value)
{
throw new NotImplementedException ();
}