azure-functions

Name: azure-functions
Author: managedcode

461stars35forks

How to install azure-functions?

managedcode/dotnet-skills/azure-functions

$npx -y skills add managedcode/dotnet-skills --skill azure-functions

Installs into the current project.

Summary

Build, review, or migrate Azure Functions in .NET with correct execution model, isolated worker setup, bindings, DI, and Durable Functions patterns. USE FOR: working on Azure Functions in .NET; migrating from the in-process model to the isolated worker model; adding Durable Funct

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SKILL.md

1	# Azure Functions for .NET
2
3	## Trigger On
4
5	- working on Azure Functions in .NET
6	- migrating from the in-process model to the isolated worker model
7	- adding Durable Functions, bindings, or host configuration
8
9	## Documentation
10
11	- [Guide for running C# Azure Functions in an isolated worker process](https://learn.microsoft.com/en-us/azure/azure-functions/dotnet-isolated-process-guide)
12	- [Differences between in-process and isolated worker process](https://learn.microsoft.com/en-us/azure/azure-functions/dotnet-isolated-in-process-differences)
13	- [Migrate C# app from in-process to isolated worker model](https://learn.microsoft.com/en-us/azure/azure-functions/migrate-dotnet-to-isolated-model)
14	- [Durable Functions overview](https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-overview)
15	- [Durable Functions best practices and diagnostic tools](https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-best-practice-reference)
16
17	### References
18
19	- [Patterns](references/patterns.md) - Isolated worker patterns, Durable Functions patterns, advanced binding patterns
20	- [Anti-Patterns](references/anti-patterns.md) - Common Azure Functions mistakes and how to avoid them
21
22	## Workflow
23
24	1. Use isolated worker model for all new work:
25	- In-process model reaches end of support on November 10, 2026
26	- Runtime v1.x ends support on September 14, 2026
27	- Target .NET 8+ for longest support window
28
29	2. Detect current project shape:
30	- Target framework and runtime version
31	- Worker model (isolated vs in-process)
32	- Binding packages and host configuration
33
34	3. Use standard .NET patterns in isolated model:
35	- Normal dependency injection
36	- Middleware pipeline
37	- `IOptions<T>` for configuration
38	- `ILogger<T>` for logging
39
40	4. For Durable Functions:
41	- Validate orchestration determinism constraints
42	- Handle replay behavior correctly
43	- Use typed activity patterns
44
45	5. Verify both local and deployment behavior.
46
47	## Isolated Worker Model Setup
48
49	### Basic Function with DI
50	```csharp
51	// Program.cs
52	var host = new HostBuilder()
53	.ConfigureFunctionsWebApplication()
54	.ConfigureServices(services =>
55	{
56	services.AddApplicationInsightsTelemetryWorkerService();
57	services.ConfigureFunctionsApplicationInsights();
58	services.AddSingleton<IMyService, MyService>();
59	})
60	.Build();
61
62	host.Run();
63	```
64
65	### HTTP Trigger Function
66	```csharp
67	public class HttpFunctions(ILogger<HttpFunctions> logger, IMyService myService)
68	{
69	[Function("GetItems")]
70	public async Task<IActionResult> GetItems(
71	[HttpTrigger(AuthorizationLevel.Function, "get", Route = "items")] HttpRequest req)
72	{
73	logger.LogInformation("Processing GetItems request");
74	var items = await myService.GetItemsAsync();
75	return new OkObjectResult(items);
76	}
77	}
78	```
79
80	### Queue Trigger with Options
81	```csharp
82	public class QueueFunctions(ILogger<QueueFunctions> logger, IOptions<ProcessingOptions> options)
83	{
84	[Function("ProcessMessage")]
85	public async Task ProcessMessage(
86	[QueueTrigger("myqueue", Connection = "AzureWebJobsStorage")] string message)
87	{
88	logger.LogInformation("Processing message: {Message}", message);
89	// Process with retry policy from options
90	}
91	}
92	```
93
94	## Middleware Pattern
95
96	### Custom Middleware
97	```csharp
98	// Program.cs
99	var host = new HostBuilder()
100	.ConfigureFunctionsWebApplication(builder =>
101	{
102	builder.UseMiddleware<ExceptionHandlingMiddleware>();
103	builder.UseMiddleware<CorrelationIdMiddleware>();
104	})
105	.Build();
106
107	// CorrelationIdMiddleware.cs
108	public class CorrelationIdMiddleware : IFunctionsWorkerMiddleware
109	{
110	public async Task Invoke(FunctionContext context, FunctionExecutionDelegate next)
111	{
112	var correlationId = context.Features.Get<IHttpRequestFeature>()?.Headers["X-Correlation-Id"]
113	?? Guid.NewGuid().ToString();
114
115	context.Items["CorrelationId"] = correlationId;
116
117	await next(context);
118	}
119	}
120	```
121
122	## Durable Functions Patterns
123
124	### Function Chaining
125	```csharp
126	[Function(nameof(ChainOrchestrator))]
127	public static async Task<string> ChainOrchestrator(
128	[OrchestrationTrigger] TaskOrchestrationContext context)
129	{
130	var result1 = await context.CallActivityAsync<string>(name

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azure-functions

461stars35forks

View on GitHub

How to install azure-functions?

managedcode/dotnet-skills/azure-functions

$npx -y skills add managedcode/dotnet-skills --skill azure-functions

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# Azure Functions for .NET
2
3	## Trigger On
4
5	- working on Azure Functions in .NET
6	- migrating from the in-process model to the isolated worker model
7	- adding Durable Functions, bindings, or host configuration
8
9	## Documentation
10
11	- [Guide for running C# Azure Functions in an isolated worker process](https://learn.microsoft.com/en-us/azure/azure-functions/dotnet-isolated-process-guide)
12	- [Differences between in-process and isolated worker process](https://learn.microsoft.com/en-us/azure/azure-functions/dotnet-isolated-in-process-differences)
13	- [Migrate C# app from in-process to isolated worker model](https://learn.microsoft.com/en-us/azure/azure-functions/migrate-dotnet-to-isolated-model)
14	- [Durable Functions overview](https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-overview)
15	- [Durable Functions best practices and diagnostic tools](https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-best-practice-reference)
16
17	### References
18
19	- [Patterns](references/patterns.md) - Isolated worker patterns, Durable Functions patterns, advanced binding patterns
20	- [Anti-Patterns](references/anti-patterns.md) - Common Azure Functions mistakes and how to avoid them
21
22	## Workflow
23
24	1. Use isolated worker model for all new work:
25	- In-process model reaches end of support on November 10, 2026
26	- Runtime v1.x ends support on September 14, 2026
27	- Target .NET 8+ for longest support window
28
29	2. Detect current project shape:
30	- Target framework and runtime version
31	- Worker model (isolated vs in-process)
32	- Binding packages and host configuration
33
34	3. Use standard .NET patterns in isolated model:
35	- Normal dependency injection
36	- Middleware pipeline
37	- `IOptions<T>` for configuration
38	- `ILogger<T>` for logging
39
40	4. For Durable Functions:
41	- Validate orchestration determinism constraints
42	- Handle replay behavior correctly
43	- Use typed activity patterns
44
45	5. Verify both local and deployment behavior.
46
47	## Isolated Worker Model Setup
48
49	### Basic Function with DI
50	```csharp
51	// Program.cs
52	var host = new HostBuilder()
53	.ConfigureFunctionsWebApplication()
54	.ConfigureServices(services =>
55	{
56	services.AddApplicationInsightsTelemetryWorkerService();
57	services.ConfigureFunctionsApplicationInsights();
58	services.AddSingleton<IMyService, MyService>();
59	})
60	.Build();
61
62	host.Run();
63	```
64
65	### HTTP Trigger Function
66	```csharp
67	public class HttpFunctions(ILogger<HttpFunctions> logger, IMyService myService)
68	{
69	[Function("GetItems")]
70	public async Task<IActionResult> GetItems(
71	[HttpTrigger(AuthorizationLevel.Function, "get", Route = "items")] HttpRequest req)
72	{
73	logger.LogInformation("Processing GetItems request");
74	var items = await myService.GetItemsAsync();
75	return new OkObjectResult(items);
76	}
77	}
78	```
79
80	### Queue Trigger with Options
81	```csharp
82	public class QueueFunctions(ILogger<QueueFunctions> logger, IOptions<ProcessingOptions> options)
83	{
84	[Function("ProcessMessage")]
85	public async Task ProcessMessage(
86	[QueueTrigger("myqueue", Connection = "AzureWebJobsStorage")] string message)
87	{
88	logger.LogInformation("Processing message: {Message}", message);
89	// Process with retry policy from options
90	}
91	}
92	```
93
94	## Middleware Pattern
95
96	### Custom Middleware
97	```csharp
98	// Program.cs
99	var host = new HostBuilder()
100	.ConfigureFunctionsWebApplication(builder =>
101	{
102	builder.UseMiddleware<ExceptionHandlingMiddleware>();
103	builder.UseMiddleware<CorrelationIdMiddleware>();
104	})
105	.Build();
106
107	// CorrelationIdMiddleware.cs
108	public class CorrelationIdMiddleware : IFunctionsWorkerMiddleware
109	{
110	public async Task Invoke(FunctionContext context, FunctionExecutionDelegate next)
111	{
112	var correlationId = context.Features.Get<IHttpRequestFeature>()?.Headers["X-Correlation-Id"]
113	?? Guid.NewGuid().ToString();
114
115	context.Items["CorrelationId"] = correlationId;
116
117	await next(context);
118	}
119	}
120	```
121
122	## Durable Functions Patterns
123
124	### Function Chaining
125	```csharp
126	[Function(nameof(ChainOrchestrator))]
127	public static async Task<string> ChainOrchestrator(
128	[OrchestrationTrigger] TaskOrchestrationContext context)
129	{
130	var result1 = await context.CallActivityAsync<string>(name

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Type