Mastering Azure Functions
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This document discusses Azure Functions concepts and scenarios. It provides an overview of Azure Functions versions 1.x and 2.x, supported languages, triggers, inputs and outputs. It also covers Function configuration files, code examples, secrets management, and Function Proxies for API management. Resources for learning more about Azure Functions tools, elevating privileges using On Behalf Of flow, and integrating Functions with SharePoint are provided.
![public static void Run(byte[] image, string filename,
Stream outputBlob, TraceWriter log)
{
log.Info($"Processing image: {filename}");
var imageBuilder = ImageResizer.ImageBuilder.Current;
imageBuilder.Build(
image, outputBlob,
new ResizeSettings(640, 400, FitMode.Max, null), false);
}
{
"bindings": [
{
"name": "image",
"type": "blobTrigger",
"direction": "in",
"path": "card-input/{filename}.jpg",
"connection": "AzureWebJobsStorage"
},
{
"type": "blob",
"name": "outputBlob",
"path": "card-output/{filename}.jpg",
"connection": "AzureWebJobsStorage",
"direction": "out"
}
]
}](https://image.slidesharecdn.com/masteringazurefunctionssession-180607132600/85/Mastering-Azure-Functions-14-320.jpg)
Mastering Azure Functions
- 2. Agenda • Azure Functions Concepts • Life on the client side … Big scenarios where you may miss the server: • Timer job • Elevating privileges • Hiding API keys with Function Proxies • Resources – including all the code!
- 3. …if cloud computing was transportation …you can buy or lease a car and maintain it yourself
- 4. …you can rent a car …if cloud computing was transportation …you can buy or lease a car and maintain it yourself …you can rent a car and pay for having it around even when you are not driving
- 5. …you can rent a car …if cloud computing was transportation …you can buy or lease a car and maintain it yourself …you can rent a car and pay for having it around even when you are not driving …you can use a ride sharing app pay only for transportation
- 7. 1
- 8. Functions 1.x Functions 2.x C# GA Preview JavaScript GA Preview F# GA Preview Java Preview PowerShell Experimental Python Experimental PHP Experimental TypeScript Experimental Batch (.cnd, .bat) Experimental Bash Experimental
- 9. Type 1.x 2.x Trigger Input Output Blob Storage ✔ ✔ 1 ✔ ✔ ✔ Cosmos DB ✔ ✔ ✔ ✔ ✔ Event Grid ✔ ✔ ✔ Event Hubs ✔ ✔ ✔ ✔ External File 2 ✔ ✔ ✔ External Table 2 ✔ ✔ ✔ HTTP ✔ ✔ 1 ✔ ✔ Microsoft Graph Excel tables ✔ ✔ ✔ Microsoft Graph OneDrive files ✔ ✔ ✔ Type 1.x 2.x Trigger Input Output Microsoft Graph Outlook email ✔ ✔ MS Graph Events ✔ ✔ ✔ ✔ MS Graph Auth tokens ✔ ✔ Mobile Apps ✔ ✔ ✔ ✔ Notification Hubs ✔ ✔ Queue storage ✔ ✔ 1 ✔ ✔ SendGrid ✔ ✔ ✔ Service Bus ✔ ✔ ✔ ✔ Table storage ✔ ✔ 1 ✔ ✔ Timer ✔ ✔ ✔ Twilio ✔ ✔ ✔ Webhooks ✔ ✔ ✔
- 12. Functions Runtime Functions Programming Interface App Service App Hosting Plans Triggers Input Bindings Output Bindings
- 13. File What it does host.json Host settings local.settings.json Settings during local debug (replaced by Application Settings at runtime) <folder>/function.json Define function, bindings proxies.json Define function proxies package.json/package-lock.json (JavaScript only) – npm packages
- 14. public static void Run(byte[] image, string filename, Stream outputBlob, TraceWriter log) { log.Info($"Processing image: {filename}"); var imageBuilder = ImageResizer.ImageBuilder.Current; imageBuilder.Build( image, outputBlob, new ResizeSettings(640, 400, FitMode.Max, null), false); } { "bindings": [ { "name": "image", "type": "blobTrigger", "direction": "in", "path": "card-input/{filename}.jpg", "connection": "AzureWebJobsStorage" }, { "type": "blob", "name": "outputBlob", "path": "card-output/{filename}.jpg", "connection": "AzureWebJobsStorage", "direction": "out" } ] }
- 18. The secrets we keep… • Connection strings • Application keys / Client secrets • Certificates, and passwords to certificate private keys • Encryption keys • Service account passwords
- 20. Do try this at home! http://bit.ly/AzFuncTools Want to not elevate permissions? Learn about “On Behalf Of” flow in this great blog series by Vardhaman Deshpande http://bit.ly/AzFuncOnBehalfOf
- 21. • Light-weight API management • Change URL, manipulate request and response • Inherits the configuration of your Function App (e.g. authentication) Azure Function Proxies
- 22. http://bit.ly/AzFuncTools http://bit.ly/AzureSPC-FuncJS http://bit.ly/AzureSPC-FuncCS On Behalf Of Flow http://bit.ly/AzFuncOnBehalfOf http://bit.ly/AzureSPC-FuncCSOM http://bit.ly/AzureSPC-FuncSPFx http://bit.ly/AzureSPC-SiteScripts
Editor's Notes
- #2: DEMO SETUP: Open PowerShell ISE to show certificate extract in ISE Postman – local debug / web service proxy Incognito browser as Katie Jordan Browser as me VS – timer job (C# function) VS Code – JS Function Cmder
- #4: 3
- #5: 4
- #6: 5
- #16: Show timer job output Show certificate, PowerShell to extract Show app registration Show extracted info in manifest Show permissions Show code in VS Local debug Show settings in Function App – point out App Svc settings vs. Func App settings Show func – run – show the generated function.json Walk thru code
- #21: Demo adding a comment as Katie Jordan Show func tools Show local debug w/VS Code Show app settings Easy Auth Content deployment CORS Code walk-thru
- #22: Show proxy.json Show function in portal Call from Postman