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Add checks for entity support #1047

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Feb 28, 2024
Merged

Add checks for entity support #1047

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14 changes: 14 additions & 0 deletions src/DurableTask.Core/Entities/OrchestrationEntityContext.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -73,6 +73,14 @@ public OrchestrationEntityContext(
/// </summary>
public Guid? CurrentCriticalSectionId => this.criticalSectionId;

void CheckEntitySupport()
{
if (!this.EntitiesAreSupported)
{
throw new NotSupportedException("Durable entities are not supported by the current backend configuration.");
}
}

/// <summary>
/// Enumerate all the entities that are available for calling from within a critical section.
/// This set contains all the entities that were locked prior to entering the critical section,
Expand All @@ -81,6 +89,8 @@ public OrchestrationEntityContext(
/// <returns>An enumeration of all the currently available entities.</returns>
public IEnumerable<EntityId> GetAvailableEntities()
{
this.CheckEntitySupport();

if (this.IsInsideCriticalSection)
{
foreach (var e in this.availableLocks!)
Expand Down Expand Up @@ -227,6 +237,8 @@ public EntityMessageEvent EmitRequestMessage(
(DateTime Original, DateTime Capped)? scheduledTimeUtc,
string? input)
{
this.CheckEntitySupport();

var request = new RequestMessage()
{
ParentInstanceId = this.instanceId,
Expand All @@ -251,6 +263,8 @@ public EntityMessageEvent EmitRequestMessage(
/// <returns>The event to send.</returns>
public EntityMessageEvent EmitAcquireMessage(Guid lockRequestId, EntityId[] entities)
{
this.CheckEntitySupport();

// All the entities in entity[] need to be locked, but to avoid deadlock, the locks have to be acquired
// sequentially, in order. So, we send the lock request to the first entity; when the first lock
// is granted by the first entity, the first entity will forward the lock request to the second entity,
Expand Down