Sponsored & Brought to you by

Logic apps and PowerApps – Integrate across your APIsStephen Siciliano

http://www.twitter.com/iscsus

https://www.linkedin.com/in/ssiciliano

Logic apps and Power Apps – Integrate across

your APIsStephen Siciliano, April 2016

Agenda• Background• Visualizing your flow• Triggering Logic apps• Connect to your APIs• Building a Business app• What if you need code?• Q & A

Background

Democratize Development

Vision:

Platform Leader

RichEcosystem

Platform Value

flexible business solutions, delivered quickly –without the time and cost of

custom software development

Or…

Clicks, not code

Businesses need to deliver that flexibility in a way that stays extensible, connected, secure and

scalable

AUTOMATE

Logic AppsACT

PowerApps

Connectors to Data and APIs

Connect and automate common tasks with Logic Apps

Use simple, intuitive tools

Create crucial, reliable tasks without coding

Integrate your mobile and web-based apps

Connect existing apps to SaaS services

BizTalk APIs for expert integration scenarios

Visualizing your flow

Designer feature improvements • Much better control flow handling• More visual way to populate parameters than before • New swagger (OpenAPI) extensions• Dynamic content without dynamic swagger• Folder browsers

Long term goal: don't require code view for any features

Control flow in the designer

Response For Each Split On Do UntilConditions

EXPLICIT IN THE UI IMPLICT IN THE UI COMING SOON

DemoControl Flow in the DesignerDynamic Content

Dynamic content in the designerWorks by specifying another API to call for the contentx-ms-dynamic-values• For dynamic dropdowns (static dropdowns can just use an

enum)x-ms-dynamic-schema• In SharePoint or SQL, the columns vary from table-to-table• Rather that define all possible tables in swagger, you expose an

endpoint to get the JSON schema on• Swagger can be public, allowing searching / indexing

https://azure.microsoft.com/en-us/documentation/articles/powerapps-develop-api/

Triggering Logic apps

Triggering from your APIs

Webhooks• Preferred way to trigger a

workflow• Instantaneous• Highly scalable• Your API needs to

implement 2 methods:1. Subscribe2. Unsubscribe

Polling• Fallback if you’re

shimming an existing API• Much chattier and laggier• Need to add 2 headers:

1. Retry-after2. Location

• Two options: 202-async or batched

WebhooksSubscribe

Called whenever the Logic app is created/enabledUse the @listCallbackUri() function to get the endpoint of the trigger to pass to the backing servicePass whatever content you want in the body

UnsubscribeCalled when the Logic app is delete/disabledUse the @triggerOutputs().subscribe object to get values from the subscribe (e.g. the id of a webhook)

Polling triggersRetry-after header used to tell the engine when to poll again

Retry-after 60

Location header to tell the engine where to poll next• Use the Location header to store some watermark• E.g. for an OData endpoint return: Location https://{orig endpoint}?$filter=_createdTime gt {utcnow}

x-ms-trigger: single• Returns 200 when there is

trigger payload• Returns 202 when not

x-ms-trigger: batched• Return an array to split on• Can return an empty array if

you don’t want to trigger

Using async in the middle of your Logic app• The async operations you define (webhook or polling)

can both be used inside of an action• Think of the "when a file is added" api. You can create a

workflow to:• Whenever a new case is opened in CRM • Send an email asking for the details to be put into a doc in a

folder • When a file is added to the folder • Attach to the case in CRM and close it

Using a Logic app as an HTTP endpoint• Easily create APIs to call that

orchestrate across 1 or more other services• You have full control to define

the body of the response• You can have as many response

shapes as you need

Connect to your APIs

Easily use cloud or custom APIs:• Dozens of built-in APIs for popular

SaaS

• An ecosystem of APIs for any need

• Create and publish custom, reusable APIs

• Easily connect to existing APIs in the cloud

• Visual Studio tooling with one click publish and remote debugging

Create, consume andhost APIs more easily

API’S

Different levels of integration• HTTP action

• Manually define all of the parts of the request (URI, method, body payload)

• HTTP + Swagger action• Paste in your swagger’s endpoint• Needs to be CORS enabled and

unauthenticated• App Services deployed in your subscription

• Same requirements for the swagger• Easy auth to protect the API • Auto-discovers the operations

• "API connections"

API connection action type• Managed APIs• OOB APIs hosted by Logic

Apps• Serviced by the product team• First class designer experience• Rapid development

• Custom and External APIs• First class designer experience

using Swagger• Auto discovery of Azure hosted APIs• Declaratively reference an External

API• Raw HTTP request for all other

API• API Connections• Authenticate once and re-use• Differentiate connection

configuration• Simple to deploy

DemoCustom APIs

Building a business app

• Easily create mobile-optimized applications• Connect to your data where it

resides, access a wide variety of data sources, from SharePoint lists to Excel files• Integrate apps with larger processes; trigger workflows across your Enterprise based on user actions

PowerApps

DemoBuilding a business app

What if you need code?

Azure Functions• Very easy way to host small snippets of code that run

some logic• Supports all of the App Service languages • Native integration inside of Logic apps

Q & A