Agent skill

azure-resource-manager-durabletask-dotnet

Azure Resource Manager SDK for Durable Task Scheduler in .NET. Use for MANAGEMENT PLANE operations: creating/managing Durable Task Schedulers, Task Hubs, and retention policies via Azure Resource Manager. Triggers: "Durable Task Scheduler", "create scheduler", "task hub", "DurableTaskSchedulerResource", "provision Durable Task", "orchestration scheduler".

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SKILL.md

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

bash
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

bash
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

csharp
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

csharp
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

csharp
// 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

csharp
// 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

csharp
// 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

csharp
// 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

csharp
// 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

csharp
// 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

csharp
// 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:

csharp
// 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

  1. Use WaitUntil.Completed for operations that must finish before proceeding
  2. Use WaitUntil.Started when you want to poll manually or run operations in parallel
  3. Always use DefaultAzureCredential — never hardcode keys
  4. Handle RequestFailedException for ARM API errors
  5. Use CreateOrUpdateAsync for idempotent operations
  6. Delete task hubs before schedulers — schedulers with task hubs cannot be deleted
  7. Use IP allowlists for network security in production

Error Handling

csharp
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

csharp
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

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