[Struyf] Automate Your Tasks With Azure Functions
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The document provides an overview of Azure Functions, detailing its characteristics as a serverless computing option, including event-driven architecture and pay-per-use pricing. It outlines various use cases, pricing plans, and development options, as well as deployment strategies and security options for using Azure Functions. Additionally, it discusses local development tools, debugging techniques, and the integration of bindings and queues in function applications.
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![Working with bindings
Add you bindings to the function.json file
{
"disabled": false,
"bindings": [{
"authLevel": "function",
"type": "httpTrigger",
"direction": "in",
"name": "req"
},
{
"type": "queue",
"name": "spfxversions",
"direction": "out",
"queueName": "versions",
"connection": "AzureWebJobsStorage"
}]
}](https://image.slidesharecdn.com/ibzygut2r9mbbgdi0qzh-signature-d4523b3bf020616e67040d2a940ba8bf9aeab187b20da49956548f98de22ea12-poli-180606121949/85/Struyf-Automate-Your-Tasks-With-Azure-Functions-25-320.jpg)
[Struyf] Automate Your Tasks With Azure Functions
- 4. No hamsters are involved in the process of running your functions
- 5. #SPSOslo - @eliostruyf What is Serverless? • AKA: FaaS (Function as a Service) • Abstraction of servers • Event-driven / instant scale • Pay-per-use • Micro-services a way to decouple your monolithic applications • No permanent storage, or it has to live somewhere else
- 7. Azure Functions • Running pieces of code / scripts in the cloud • Use the language of your preference • C#, Node.js (JavaScript), F#, Python, PHP, PowerShell, Java • Runs on Azure App Services Use cases • Timer function • Call from SPFx web part • Call from site design / flow • …
- 8. Azure Functions – Pricing plans Consumption plan • € 0,17 per one million requests • Scales up automatically • Useful for smaller workloads • Max. timeout of 10 minutes App Service Plan • Depends on the chosen plan • You’re in control of scaling • Faster / higher workload • No timeout Turn on: always on!
- 9. Azure Functions vs Web Jobs Similarities • Both can be scheduled or use a trigger (queue/blob/etc.) • Both support C#, JavaScript, PS Differences • Pricing • Development flexibility • Easier to call Azure Functions (HTTP Trigger) • It has its own UI in Azure • Restrictions: 10 minutes timeout
- 10. Security options Simple function authentication • A code passed to the function • On function level or app/admin level https://<app-name>.azurewebsites.net/api/<function>?code=<code> Azure AD Authentication • Use OAuth token to call the function • Great use in combination with SPFx solutions: AadHttpClient
- 11. #SPSOslo - @eliostruyf Demo: Checking out the portal
- 13. Local development options Any stack / editor / platform • azure-functions-cli • Node.js Visual Studio • True C# functions • VS2017 plugin
- 14. Useful CLI commands • func init initialize a new project • func new create a new function • func host start start up the functions runtime • func azure login • func azure functionapp fetch-app-settings <function-name> • func azure storage fetch-connection-string <storage-name>
- 15. Debugging your functions • Run: func host start • Press F5 in Visual Studio Code and execute your function
- 16. #SPSOslo - @eliostruyf Demo: Writing your first Azure Function
- 18. #SPSOslo - @eliostruyf Importing dependencies • Node.js npm install • Make sure you create a package.json file (npm init) • Best to be placed on the root level • C# • Use NuGet like you are used using it
- 19. #SPSOslo - @eliostruyf Working with environment variables
- 20. #SPSOslo - @eliostruyf Working with environment variables • Node.js • process.env.<setting-name> • C# • GetEnvironmentVariable("<setting-name>")
- 22. #SPSOslo - @eliostruyf Working with bindings Blob storage Cosmos DB Storage queue Service bus HTTP … Input Blob storage Cosmos DB Storage queue SendGrid Twilio … Output
- 23. Queues are great for… Anything that should be picked up by a longer running task • SharePoint site provisioning • SharePoint web hooks • File processing (e.g. image size optimization) QueueTrigger function • Auto-runs your code when a message gets added • If fails, it tried by default 5 times
- 24. Queues are great for… Item 1 Item 2 Item 3 Item 4 Item 5 Item 6 Queue triggeredHTTP Triggered
- 25. Working with bindings Add you bindings to the function.json file { "disabled": false, "bindings": [{ "authLevel": "function", "type": "httpTrigger", "direction": "in", "name": "req" }, { "type": "queue", "name": "spfxversions", "direction": "out", "queueName": "versions", "connection": "AzureWebJobsStorage" }] }
- 26. #SPSOslo - @eliostruyf Demo: Creating settings and bindings
- 28. Deployment options • Publish from Visual Studio • CLI: func azure functionapp publish <function-name> • Use local GIT repository • Continuous deployment via VSTS
- 29. Do not forget to configure your settings
- 30. #SPSOslo - @eliostruyf Cold start
- 31. Optimizing the cold start • Precompile C# created functions • Not use the *.csx files • Use Visual Studio + Azure development workload • Use Azure Functions Pack for Node.js • https://github.com/Azure/azure-functions-pack • Uses Webpack • Add your dependencies at root level of the host!
- 32. #SPSOslo - @eliostruyf Demo: Deployment via local GIT repo
- 33. #SPSOslo - @eliostruyf What’s next?
- 34. #SPSOslo - @eliostruyf Durable functions • Extension on top of Azure Functions and WebJobs • Write stateful functions • Waiting for human interaction
- 35. Azure Functions – on-premises https://elst.es/2GXcdyU
- 36. Questions?
- 37. Office Servers & Services MVP Azure / Office 365 / SharePoint @eliostruyf www.eliostruyf.com [email protected] Elio Struyf Developer & Architect