Serverless in Azure with Functions
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This document summarizes the design, development, deployment, and monitoring of serverless applications using Azure Functions. It outlines best practices for distributed architecture, cloud DevOps, and using Logic Apps for workflow orchestration. The development process involves using Azure Functions Core Tools and bindings to connect triggers and outputs. Deployment is done through Azure Resource Manager templates. Monitoring is done through Application Insights.
![function.json
"bindings": [
{
"type": "httpTrigger",
"direction": "in",
"webHookType": "genericJson",
"name": "req"
},
{
"type": "http",
"direction": "out",
"name": "res"
},
{
"type": "queue",
"name": "eventOutput",
"queueName": "aievents1",
"connection":"AiStorageConnection",
"direction": "out"
}
]
public static class OrderHandler
{
[FunctionName("OrderWebhook")]
public static async Task<HttpResponseMessage> Run(
[HttpTrigger] HttpRequestMessage req,
[Queue("aievents1", Connection = "AiStorageConnection")]
IAsyncCollector<String> eventOutput,
TraceWriter log)
{
log.Info($"Webhook was triggered!");
string jsonContent = await req.Content.ReadAsStringAsync();
dynamic data = JsonConvert.DeserializeObject(jsonContent);
await eventOutput.AddAsync(
JsonConvert.SerializeObject(GetLogData(data)));
int orderId = PlaceOrder(data);
return req.CreateResponse(HttpStatusCode.OK,
new {orderNumber = orderId });
}
. . .
}](https://image.slidesharecdn.com/azurefunctions-170610170533/85/Serverless-in-Azure-with-Functions-19-320.jpg)
Serverless in Azure with Functions
- 2. Sponsors
- 14. Serverless Apps Lifecycle Design Develop Deploy Monitor
- 15. Design Design Develop Deploy Monitor
- 16. Distributed Architecture • Design stateless and ASync solutions to enable scaling. • Connect with other Azure Services via triggers and bindings. • Leverage proxies for API abstraction and composition. • Use Logic Apps to orchestrate workflows • Use managed connectors to abstract calls to cloud and on-premises services. Cloud DevOps • Design for automation. Use ARM templates. • Design DevOps for the cloud: safe deployment with test/development and production environment separation and test on the target platform. • Monitor the running apps with App Insights and tune for best experience.
- 19. function.json "bindings": [ { "type": "httpTrigger", "direction": "in", "webHookType": "genericJson", "name": "req" }, { "type": "http", "direction": "out", "name": "res" }, { "type": "queue", "name": "eventOutput", "queueName": "aievents1", "connection":"AiStorageConnection", "direction": "out" } ] public static class OrderHandler { [FunctionName("OrderWebhook")] public static async Task<HttpResponseMessage> Run( [HttpTrigger] HttpRequestMessage req, [Queue("aievents1", Connection = "AiStorageConnection")] IAsyncCollector<String> eventOutput, TraceWriter log) { log.Info($"Webhook was triggered!"); string jsonContent = await req.Content.ReadAsStringAsync(); dynamic data = JsonConvert.DeserializeObject(jsonContent); await eventOutput.AddAsync( JsonConvert.SerializeObject(GetLogData(data))); int orderId = PlaceOrder(data); return req.CreateResponse(HttpStatusCode.OK, new {orderNumber = orderId }); } . . . }
- 20. /FB /FA Function A /FC API proxy endpoints HttpTrigger function endpoints Key: Design: API Abstraction and Composition Function App A Function C/FC Function App C Function B/FB Function App B
- 22. Workflow in the cloud Powerful control flow Connect functions and APIs Declarative definition to persist in source control and drive deployments
- 23. Logic Apps Cloud APIs and platform • Supports over 125 built-in connectors • Scales to meet your needs • Enables rapid development • Extends with custom APIs and Functions API connections • Authenticate once and reuse
- 26. Develop Design Develop Deploy Monitor
- 27. Azure Functions Core Tools Provides the entire Functions runtime Trigger off of Azure events and debug locally JavaScript Use Visual Studio Code or any Node debugger C# Use Visual Studio 2017 Preview Use class libraries with attributes in Visual Studio 2017 Preview
- 28. Based on class libraries Get the full power of IntelliSense, unit testing, and local debugging Use WebJobs attributes to define triggers and bindings Learn more at https://aka.ms/vs2017functiontools
- 30. Supports Node.js v6.5.0 Supports JS and TypeScript You can use the callback or return a Promise VS Code support for local debugging via CLI VS Code supports rich Node.js debugging
- 31. Deploy Design Develop Deploy Monitor
- 32. Resource deployment • Azure Resource Manager (i.e. ARM) Content deployment • Visual Studio • Azure CLI (Logic App) • Azure Functions Core Tools (Function App) • CI/CD Safe deployment practices • Use Azure Functions deployment slots for environment separation and swap deployments
- 36. Monitor Design Develop Deploy Monitor
- 38. Extensible Application Performance Management (APM) Rich data: Metrics, Traces, Exception tracking, Dependencies, Page Views, User data, custom events Easy to use graph/alerts, powerful analytics portal, integration with PowerBI and other analytics services
- 41. Developer experience Same consistent Programming Model Same Azure Functions portal Publish directly from Visual Studio tooling Leverage triggers: timer trigger and new SQL Service Broker trigger Administrator features Take advantage of Azure Functions on premises Workers can run in spare compute – i.e. desktops left on overnight within orgs Only provision two types of roles Management Role – Hosts Portal, Publishing Endpoint and Worker Role – Runs Function in Windows Server Containers
- 42. Azure offers a comprehensive Serverless Application Platform Azure Functions bindings and local DevEx optimize time to market Azure Logic Apps provide orchestration and integration with 125+ connectors Try Azure Functions and Logic Apps: http://aka.ms/TryFunctions Join the Azure Functions Community https://aka.ms/func-github
Editor's Notes
- #3: Thank them & visit their stands Microsoft – venue Black Marble – organisation/volunteers NDC, Grey Matter, Sonoco Trident, Fiscal Technologies, iO Associates – Platinum Sponsors DevExpress – speaker/volunteer shirts Huddle – Agendas! ByBox - xxx