Azure.ResourceManager.DurableTask (.NET)

Management plane SDK for provisioning and managing Azure Durable Task Scheduler resources via Azure Resource Manager.

⚠️ Management vs Data Plane

• This SDK (Azure.ResourceManager.DurableTask): Create schedulers, task hubs, configure retention policies

• Data Plane SDK (Microsoft.DurableTask.Client.AzureManaged): Start orchestrations, query instances, send events

Installation

dotnet add package Azure.ResourceManager.DurableTask dotnet add package Azure.Identity

Current Versions: Stable v1.0.0 (2025-11-03), Preview v1.0.0-beta.1 (2025-04-24) API Version: 2025-11-01

Environment Variables

AZURE_SUBSCRIPTION_ID=<your-subscription-id> AZURE_RESOURCE_GROUP=<your-resource-group>

For service principal auth (optional)

AZURE_TENANT_ID=<tenant-id> AZURE_CLIENT_ID=<client-id> AZURE_CLIENT_SECRET=<client-secret>

Authentication

using Azure.Identity; using Azure.ResourceManager; using Azure.ResourceManager.DurableTask;

// Always use DefaultAzureCredential var credential = new DefaultAzureCredential(); var armClient = new ArmClient(credential);

// Get subscription var subscriptionId = Environment.GetEnvironmentVariable("AZURE_SUBSCRIPTION_ID"); var subscription = armClient.GetSubscriptionResource( new ResourceIdentifier($"/subscriptions/{subscriptionId}"));

Resource Hierarchy

ArmClient └── SubscriptionResource └── ResourceGroupResource └── DurableTaskSchedulerResource ├── DurableTaskHubResource └── DurableTaskRetentionPolicyResource

Core Workflow

1. Create Durable Task Scheduler

using Azure.ResourceManager.DurableTask; using Azure.ResourceManager.DurableTask.Models;

// Get resource group var resourceGroup = await subscription .GetResourceGroupAsync("my-resource-group");

// Define scheduler with Dedicated SKU var schedulerData = new DurableTaskSchedulerData(AzureLocation.EastUS) { Properties = new DurableTaskSchedulerProperties { Sku = new DurableTaskSchedulerSku(DurableTaskSchedulerSkuName.Dedicated) { Capacity = 1 // Number of instances }, // Optional: IP allowlist for network security IPAllowlist = { "10.0.0.0/24", "192.168.1.0/24" } } };

// Create scheduler (long-running operation) var schedulerCollection = resourceGroup.Value.GetDurableTaskSchedulers(); var operation = await schedulerCollection.CreateOrUpdateAsync( WaitUntil.Completed, "my-scheduler", schedulerData);

DurableTaskSchedulerResource scheduler = operation.Value; Console.WriteLine($"Scheduler created: {scheduler.Data.Name}"); Console.WriteLine($"Endpoint: {scheduler.Data.Properties.Endpoint}");

2. Create Scheduler with Consumption SKU

// Consumption SKU (serverless) var consumptionSchedulerData = new DurableTaskSchedulerData(AzureLocation.EastUS) { Properties = new DurableTaskSchedulerProperties { Sku = new DurableTaskSchedulerSku(DurableTaskSchedulerSkuName.Consumption) // No capacity needed for consumption } };

var operation = await schedulerCollection.CreateOrUpdateAsync( WaitUntil.Completed, "my-serverless-scheduler", consumptionSchedulerData);

3. Create Task Hub

// Task hubs are created under a scheduler var taskHubData = new DurableTaskHubData { // Properties are optional for basic task hub };

var taskHubCollection = scheduler.GetDurableTaskHubs(); var hubOperation = await taskHubCollection.CreateOrUpdateAsync( WaitUntil.Completed, "my-taskhub", taskHubData);

DurableTaskHubResource taskHub = hubOperation.Value; Console.WriteLine($"Task Hub created: {taskHub.Data.Name}");

4. List Schedulers

// List all schedulers in subscription await foreach (var sched in subscription.GetDurableTaskSchedulersAsync()) { Console.WriteLine($"Scheduler: {sched.Data.Name}"); Console.WriteLine($" Location: {sched.Data.Location}"); Console.WriteLine($" SKU: {sched.Data.Properties.Sku?.Name}"); Console.WriteLine($" Endpoint: {sched.Data.Properties.Endpoint}"); }

// List schedulers in resource group var schedulers = resourceGroup.Value.GetDurableTaskSchedulers(); await foreach (var sched in schedulers.GetAllAsync()) { Console.WriteLine($"Scheduler: {sched.Data.Name}"); }

5. Get Scheduler by Name

// Get existing scheduler var existingScheduler = await schedulerCollection.GetAsync("my-scheduler"); Console.WriteLine($"Found: {existingScheduler.Value.Data.Name}");

// Or use extension method var schedulerResource = armClient.GetDurableTaskSchedulerResource( DurableTaskSchedulerResource.CreateResourceIdentifier( subscriptionId, "my-resource-group", "my-scheduler")); var scheduler = await schedulerResource.GetAsync();

6. Update Scheduler

// Get current scheduler var scheduler = await schedulerCollection.GetAsync("my-scheduler");

// Update with new configuration var updateData = new DurableTaskSchedulerData(scheduler.Value.Data.Location) { Properties = new DurableTaskSchedulerProperties { Sku = new DurableTaskSchedulerSku(DurableTaskSchedulerSkuName.Dedicated) { Capacity = 2 // Scale up }, IPAllowlist = { "10.0.0.0/16" } // Update IP allowlist } };

var updateOperation = await schedulerCollection.CreateOrUpdateAsync( WaitUntil.Completed, "my-scheduler", updateData);

7. Delete Resources

// Delete task hub first var taskHub = await scheduler.GetDurableTaskHubs().GetAsync("my-taskhub"); await taskHub.Value.DeleteAsync(WaitUntil.Completed);

// Then delete scheduler await scheduler.DeleteAsync(WaitUntil.Completed);

8. Manage Retention Policies

// Get retention policy collection var retentionPolicies = scheduler.GetDurableTaskRetentionPolicies();

// Create or update retention policy var retentionData = new DurableTaskRetentionPolicyData { Properties = new DurableTaskRetentionPolicyProperties { // Configure retention settings } };

var retentionOperation = await retentionPolicies.CreateOrUpdateAsync( WaitUntil.Completed, "default", // Policy name retentionData);

Key Types Reference

Type Purpose

ArmClient

Entry point for all ARM operations

DurableTaskSchedulerResource

Represents a Durable Task Scheduler

DurableTaskSchedulerCollection

Collection for scheduler CRUD

DurableTaskSchedulerData

Scheduler creation/update payload

DurableTaskSchedulerProperties

Scheduler configuration (SKU, IPAllowlist)

DurableTaskSchedulerSku

SKU configuration (Name, Capacity, RedundancyState)

DurableTaskSchedulerSkuName

SKU options: Dedicated , Consumption

DurableTaskHubResource

Represents a Task Hub

DurableTaskHubCollection

Collection for task hub CRUD

DurableTaskHubData

Task hub creation payload

DurableTaskRetentionPolicyResource

Retention policy management

DurableTaskRetentionPolicyData

Retention policy configuration

DurableTaskExtensions

Extension methods for ARM client

SKU Options

SKU Description Use Case

Dedicated

Fixed capacity with configurable instances Production workloads, predictable performance

Consumption

Serverless, auto-scaling Development, variable workloads

Extension Methods

The SDK provides extension methods on SubscriptionResource and ResourceGroupResource :

// On SubscriptionResource subscription.GetDurableTaskSchedulers(); // List all in subscription subscription.GetDurableTaskSchedulersAsync(); // Async enumerable

// On ResourceGroupResource
resourceGroup.GetDurableTaskSchedulers(); // Get collection resourceGroup.GetDurableTaskSchedulerAsync(name); // Get by name

// On ArmClient armClient.GetDurableTaskSchedulerResource(id); // Get by resource ID armClient.GetDurableTaskHubResource(id); // Get task hub by ID

Best Practices

• Use WaitUntil.Completed for operations that must finish before proceeding

• Use WaitUntil.Started when you want to poll manually or run operations in parallel

• Always use DefaultAzureCredential — never hardcode keys

• Handle RequestFailedException for ARM API errors

• Use CreateOrUpdateAsync for idempotent operations

• Delete task hubs before schedulers — schedulers with task hubs cannot be deleted

• Use IP allowlists for network security in production

Error Handling

using Azure;

try { var operation = await schedulerCollection.CreateOrUpdateAsync( WaitUntil.Completed, schedulerName, schedulerData); } catch (RequestFailedException ex) when (ex.Status == 409) { Console.WriteLine("Scheduler already exists"); } catch (RequestFailedException ex) when (ex.Status == 404) { Console.WriteLine("Resource group not found"); } catch (RequestFailedException ex) { Console.WriteLine($"ARM Error: {ex.Status} - {ex.ErrorCode}: {ex.Message}"); }

Complete Example

using Azure; using Azure.Identity; using Azure.ResourceManager; using Azure.ResourceManager.DurableTask; using Azure.ResourceManager.DurableTask.Models; using Azure.ResourceManager.Resources;

// Setup var credential = new DefaultAzureCredential(); var armClient = new ArmClient(credential);

var subscriptionId = Environment.GetEnvironmentVariable("AZURE_SUBSCRIPTION_ID")!; var resourceGroupName = Environment.GetEnvironmentVariable("AZURE_RESOURCE_GROUP")!;

var subscription = armClient.GetSubscriptionResource( new ResourceIdentifier($"/subscriptions/{subscriptionId}")); var resourceGroup = await subscription.GetResourceGroupAsync(resourceGroupName);

// Create scheduler var schedulerData = new DurableTaskSchedulerData(AzureLocation.EastUS) { Properties = new DurableTaskSchedulerProperties { Sku = new DurableTaskSchedulerSku(DurableTaskSchedulerSkuName.Dedicated) { Capacity = 1 } } };

var schedulerCollection = resourceGroup.Value.GetDurableTaskSchedulers(); var schedulerOp = await schedulerCollection.CreateOrUpdateAsync( WaitUntil.Completed, "my-scheduler", schedulerData); var scheduler = schedulerOp.Value;

Console.WriteLine($"Scheduler endpoint: {scheduler.Data.Properties.Endpoint}");

// Create task hub var taskHubData = new DurableTaskHubData(); var taskHubOp = await scheduler.GetDurableTaskHubs().CreateOrUpdateAsync( WaitUntil.Completed, "my-taskhub", taskHubData); var taskHub = taskHubOp.Value;

Console.WriteLine($"Task Hub: {taskHub.Data.Name}");

// Cleanup await taskHub.DeleteAsync(WaitUntil.Completed); await scheduler.DeleteAsync(WaitUntil.Completed);

Related SDKs

SDK Purpose Install

Azure.ResourceManager.DurableTask

Management plane (this SDK) dotnet add package Azure.ResourceManager.DurableTask

Microsoft.DurableTask.Client.AzureManaged

Data plane (orchestrations, activities) dotnet add package Microsoft.DurableTask.Client.AzureManaged

Microsoft.DurableTask.Worker.AzureManaged

Worker for running orchestrations dotnet add package Microsoft.DurableTask.Worker.AzureManaged

Azure.Identity

Authentication dotnet add package Azure.Identity

Azure.ResourceManager

Base ARM SDK dotnet add package Azure.ResourceManager

Source Reference

• GitHub: Azure.ResourceManager.DurableTask

• NuGet: Azure.ResourceManager.DurableTask