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1 .Apache OpenWhisk 101
A Cloud-Native, Open Source, Serverless
Platform Incubating at the ASF
Ying Chun Guo
guoyingc@cn.ibm.com
WeChat ID: daisy-ycguo
2 .Agenda
• What is serverless computing ?
• What is Apache OpenWhisk ?
• Apache OpenWhisk programming model
• Apache OpenWhisk community
3 .What is serverless
computing?
4 .Serverless developers focus more on
code, less on infrastructure
5 .What is serverless computing?
Functions as a Service
Serverless＝
Backend as a Service
• Functions-as-a-Service (FaaS)
– Small units of code are executed as needed as
discrete actions, scaling without the need to manage
servers or any other underlying infrastructure.
– Event-driven computing. Functions that are triggered
by events or HTTP requests.
• Backend-as-a-Service (BaaS)
– third-party API-based services replace core subsets of
functionality in an application
– Those APIs are provided as a service that auto-scales
and operates transparently
6 .Benefits of serverless
• Zero server ops
– No provisioning, updating, and managing server
infrastructure.
– Flexible Scalability
• No compute cost when idle
7 .Emerging workloads are a good fit
for event-driven programming
• Execute logic in response to database change
• Perform analytics on sensor input messages
• Provide cognitive computing via chatbots
• Schedule tasks performed for a short time
• Invoke autoscaled APIs and mobile backends
8 .What is Apache
OpenWhisk ?
9 .Apache OpenWhisk is …
A serverless, open source cloud platform
that executes functions in response to
events at any scale.
Apache OpenWhisk offers:
• Apache Software Foundation (ASF)
• True, community-driven open source (Apache 2 License)
• Proven on IBM Cloud
• Exact, same code in open source
10 .Developers work with triggers,
actions, rules, and packages
11 . Built on solid open source
foundations
Apache Incubator!
12 . Has many deployment options
Local Development
Windows
OpenWhisk
Serverless
Platform
All component services are built into Docker containers
Distributed
docker
compose
13 .Proven by IBM Cloud Functions
https://console.bluemix.net/openwhisk/
14 .Apache OpenWhisk
programming model
15 .Event driven programming model
16 .Action
A Action : A stateless, relatively short-running function
invoked as an event handler.
Stateless Function
Input Output
JSON Object A JSON Object
Goal: An Action’s run time is measured in milliseconds,
… well under the defaulted maximum of 5 minutes
20 . Event-Trigger-Rule-Action
Processing
OpenWhisk Platform
Sample Packages Trigge External
Events Actions & Action Sequences
Event rs / Service
sources Package Rules Eco-System
Feed Action
NodeJS
Rule
Data Stores
3rd Party or
Package Self-Enabled
Feed Action 1 Action 2 Action 3
NodeJS Python Swift − REST APIs
Rule − Message Queues
Social Media − Events
− Feeds
Package
Feed Action 1 Action 2
Swift Docker
Rule
Instrumented
Machines P T A
F R
21 .Demo1: Your first action, trigger and
rule
https://github.com/IBM/ibm-cloud-functions-action-trigger-rule
22 .Demo2: Database change triggered
action
https://github.com/IBM/ibm-cloud-functions-cloudant-trigger
23 .Demo3: HTTP API request triggered
action
https://github.com/IBM/ibm-cloud-functions-rest-api-trigger
24 .Apache OpenWhisk
community
25 .The Apache OpenWhisk community
is growing
26 .Apache OpenWhisk ecosystem
Tooling CLI API Gateway
(”wsk”)
wskdeploy
OpenWhisk “Core” Packages Application
Command Line Interface
(deployer + spec.)
“Samples”
debugger Message
Router Controller Bus
Invokers
Alarms slackbot
devtools
(Compose, Kube) Kafka slackinvite
Key-Value Document
Store Store Cloudant GitHubSlackB
playground
ot
(XCode Extension)
Ansible Push
Deployments Notifications matos
xcode (x3)
JIRA
vscode OpenWhisk “Catalog”
RSS
Workshop, “Template”
External Resources
Tutorial
openwhisk.github.io (openwhisk.org)
27 . OpenWhisk Project Vital Statistics
• GitHub (”Core” Repo.)
– Stars
• 3285: https://github.com/apache/incubator-openwhisk/stargazers
• and growing ~10-20 per week on average
– Stats
• 626 forks https://github.com/apache/incubator-openwhisk/network
• Contribution Graphs:
https://github.com/apache/incubator-openwhisk/graphs/contributors
• 120+ Contributors (all repos.)
– Working on the first release 0.9 in Apache
28 . Get started
github.com/apache?
Delivered as
q=openwhisk
Open source via Apache
openwhisk.org slack.openwhisk.org
Managed OpenWhisk with twitter.com/openwhisk
IBM Cloud Functions
medium.com/openwhisk
console.bluemix.net/openwhisk/
dev@openwhisk.incubator.
apache.org
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