IBM Bluemix OpenWhiskThe Future of Cloud Programming:Wiring a Microservices Application Architecture to Respond to EventsDr. Andreas Nauerz, Technical Product Manager | @AndreasNauerz

Please Note:

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• IBM’s statements regarding its plans, directions, and intent are subject to change or withdrawal without notice at IBM’s sole discretion.

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• Performance is based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput or performance that any user will experience will vary depending upon many factors, including considerations such as the amount of multiprogramming in the user’s job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve results similar to those stated here.

Agenda

• Whisk in a nutshell• Meet Dave & his team• Learn about...

– …what OpenWhisk is and how it works– …the value of OpenWhisk and how it compares to traditional models– …what makes OpenWhisk so unique

• Learn about some usage scenarios• Learn about the OpenWhisk programming model• Live demo• Summary & Questions

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Whisk in a nutshell

„Event-action platform to execute code in response to events“

Whisk in a nutshell

Serverless deployment & operations modelWe hide infrastructural and operational complexity allowing you to focus on coding: You provide code – we execute it!

Optimal utilization, fair pricing at any scaleWe provide you exactly with the resources you need – neither less nor more - and charge you only for code really being executed

Flexible programming model & powerful toolingWe support multiple languages (incl. Swift) and even the execution of custom logic via docker containers plus tools to declaratively chain your code snippets

Open & open ecosystenOpen to run anywhere to avoid any kind of vendor lock-in and to accelerate the development of a powerful ecosystem

Meet Dave & his team

• Dave is lead architect of an online photo community and marketplace– Operate a platform to…

• … share and sell photos• … edit and categorize photos via manual tagging

6

Meet Dave & his team

• To remain competitive, Dave and his team need to continously add innovative features– Idea

• Provide a mobile app that allows to automatically sharpen, noise-reduce and semantically analyze photos being uploaded

7

Meet Dave & his team

• Dave & his team start to collect requirements…– Want to focus on developing value-adding code instead of low-

level infrastructural & operational details

Meet Dave & his team

• Dave & his team start to collect requirements…– Want a flexible programming environment and model in order to

develop services in small & agile teams whereas each team can stick to the technology it knows and loves instead of going for a one size fits it all approach

Meet Dave & his team

• Dave & his team start to collect requirements…– Need access to an open ecosystem of building blocks from

multiple domains and vendors to easily integrate existing technologies to avoid reinventing the wheel over and over again

Meet Dave & his team

• Dave & his team start to collect requirements…– Want to be able to compose powerful solutions by connecting and

even chaining these building blocks rather than continously changing code

Meet Dave & his team

• Dave & his team start to collect requirements…– Want to share and reuse created compositions (and other entities)

instead of causing redundancy

Meet Dave & his team

• Dave & his team start to collect requirements…– Want to be able to outsource compute intensive tasks to a

powerful cloud platform

Meet Dave & his team

• Dave & his team start to collect requirements…– Want to be charged for code executed instead of paying for

resources idling around

Meet Dave & his team

• Dave & his team start to collect requirements…– Want to go with an open solution driven by a community to remain

flexible instead of vendor locked-in

OpenWhisk: Another way to build apps…Build your apps, your way.

Use a combination of the most prominent open-source compute technologies to power your apps. Then, let Bluemix handle the rest.

Ease of getting started Full stack Control

OpenWhisk

Event-driven apps, deployed in a serverless

environment.

Instant Runtimes

App-centric runtime environments based on

Cloud Foundry.

IBM Containers

Portable and consistent delivery of your app

without having to manage an OS.

Virtual Machines

Get the most flexibility and control over your environment with VMs.

OpenWhisk: How does it work?

} 1

Event Providers

OpenWhisk

Cloudant

Git

Weather

…

…

Data event occurs, e.g.-Commit on a Git Repository-CRUD operation on Cloudant-….

Trigger execution of associated OpenWhisk action

2

…JS Swift Docker …

OpenWhisk: How does it work?

OpenWhisk

JS Swift Docker …

Incoming HTTP request, e.g.HTTP GET mynewcoolapp.com/customers

1 2 Invoke associated OpenWhisk action „getCustomers“

Browser

Mobile App

Web App

Variety of languages

OpenWhisk: Comparison to traditional models

Swift

Application

Container VMCF

2

Polling

1b

Request

1a

• Traditional model– Continous polling due to missing event

programming model– Charged even when idling– No auto-scaling

Process & idle

OpenWhisk: Comparison to traditional models

• OpenWhisk– Introduces event programming model– Charges only for what is used– Auto-scales Pool of actions

Swift DockerJS

Trigger

1

Running action

Running action

Running action

3

Deploy action within millisecs,run it, free up resources

OpenWhisk Engine

2

Some usage Scenarios

OpenWhisk can help power various mobile, web and IoT app usecases by simplifying the programming model of orchestrating various services using events without a dedicated backend.

Digital app workloads Big Data/Analytics pipelineComplex data pipeline for Big Data/Analytics tasks can be scripted using changes in data services or streams for near real-time analytics and feedback.

DevOps & infrastructure as code

OpenWhisk can be used to automate DevOps pipeline based on events triggered from successful builds or completed staging or a go-live event.

Micro-Services builder

Whisk can be used to easily build micro-services given the footprint and programming model desired by micro services

Programming model

• Services define the events they emit as triggers, and developers associate the actions to handle the events via rules

• The developer only needs to care about implementing the desired application logic - the system handles the rest

T A R

Programming model

Trigger: „A class of events that can happen“T

Programming model

Actions: „An event-handler, i.e. code that runs in response to an event“A

Programming model

Actions: Multi-runtime support, e.g. JavaScriptA

function main(msg) {return { message: 'Hello, ' + msg.name + ' from ' +

msg.place };};

Programming model

Actions: Multi-runtime support, e.g. SwiftA

func main(params:[String:Any]) -> [String:Any] { var reply = [String:Any] () if let name = params[“name”] as? String {

print(“Hello \(name)”) reply[“msg”] = “Goodbye \(name)”

} return reply

}

Programming model

Actions: Multi-runtime support, e.g. Docker containersA

Programming model

Actions: Can be chained to create sequences to increase flexibility and foster reuse

A

AA := A1 + A2 + A3

AB := A2 + A1 + A3

AC := A3 + A1 + A2

Programming model

Rules: „An association of a trigger and an action“R

R := T A

Programming model

Packages: „A shared collection of triggers and actions“P

A

A read

write

T changes A translate A forecast

A post

T topic

OpenSource A myAction

T myFeed

Yours

T commit

ThirdParty

Live demo

Summary

• OpenWhisk…– allows you to focus on developing value-adding code– provides you with a flexible programming model for small agile teams– provides you with access to an open ecosystem of building blocks– allows you to compose powerful solutions using modern abstraction and

chaining– allows you to share and reuse what you have build– allows you to outsource load & calculation intensive tasks– only charges you for what you really use– is available as open solution in which you can participate

Summary

• What else have we seen & learnt?– Actions are executed, blocking or non-blocking, in response to events – Actions can be in Node, Swift, or even Docker containers to execute

custom logic… and there is more to come– Actions can even be chained to compose powerful solutions– Out of the box support for event sources such as Cloudant and Github

as well as scheduled actions– Tooling comprised of CLI, REST API, and iOS SDK

• What have we not seen? Complexity!

Join us today

• You want to try OpenWhisk on your own?– Want to try out our IBM Bluemix OpenWhisk offering?

• Sign-up today at: https://new-console.ng.bluemix.net/openwhisk/– Want to try out our open-source OpenWhisk offering?

• Visit: https://developer.ibm.com/openwhisk/

Join us today

• You want to try OpenWhisk on your own?– Join our lab

• 6723: Quickly Build Microservices and Integrate Mobile Apps in the Cloud with Events-On-Demand Technology

Questions?

Notices and Disclaimers

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Copyright © 2016 by International Business Machines Corporation (IBM). No part of this document may be reproduced or transmitted in any form without written permission from IBM.

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Information in these presentations (including information relating to products that have not yet been announced by IBM) has been reviewed for accuracy as of the date of initial publication and could include unintentional technical or typographical errors. IBM shall have no responsibility to update this information. THIS DOCUMENT IS DISTRIBUTED "AS IS" WITHOUT ANY WARRANTY, EITHER EXPRESS OR IMPLIED. IN NO EVENT SHALL IBM BE LIABLE FOR ANY DAMAGE ARISING FROM THE USE OF THIS INFORMATION, INCLUDING BUT NOT LIMITED TO, LOSS OF DATA, BUSINESS INTERRUPTION, LOSS OF PROFIT OR LOSS OF OPPORTUNITY. IBM products and services are warranted according to the terms and conditions of the agreements under which they are provided.

Any statements regarding IBM's future direction, intent or product plans are subject to change or withdrawal without notice.

Performance data contained herein was generally obtained in a controlled, isolated environments. Customer examples are presented as illustrations of how those customers have used IBM products and the results they may have achieved. Actual performance, cost, savings or other results in other operating environments may vary.

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Notices and Disclaimers Con’t.

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Backup

Marchitecture

Trigger

Package

Feed

Package

Feed

Package

Feed

Package

Feed

REST

CLI iOS SDK

CRUD triggers, actions, and rulesInvoke actions

UI

Action

NodeJS

Action

Swift

Action

Docker

Rule

Rule

Rule

Action

NodeJS

Action

Docker

Service ecosytem

Bluemix services

3rd party services

Self-enabled services

Chain Chain Invoke