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![“Our ancestors called it
magic, but you call it
[computer] science.
I come from a land where
they are one and the same.”
—THOR](https://image.slidesharecdn.com/serverlessandserverfull-july2018-180725221452/85/Serverless-and-serverfull-where-microservices-compliments-serverless-5-320.jpg)
![Action (aka Function) JavaScript
function main(params) {
console.log("JS msgaction args: %j", params);
Object.keys(params["body"]).forEach(function(key) {
console.log("%s: %j", key, params["body"][key])
});
return { payload: 'JavaScript on OpenWhisk on OpenShift ' + params.body.text};
}
wsk -i action update msgaction msgaction.js
wsk -i action invoke msgaction --param body '{"text":"my stuff"}' --result
{ “payload”: “JavaScript OpenWhisk on OpenShift my stuff” }
wsk -i activation get -l # see the details, logs
@burrsutter](https://image.slidesharecdn.com/serverlessandserverfull-july2018-180725221452/85/Serverless-and-serverfull-where-microservices-compliments-serverless-39-320.jpg)
![Action (aka Function) Python
def main(params):
print "Py msgaction params: " + str(params)
for key in params["body"]:
print key, params["body"][key]
return { "payload" :
"Python on OpenWhisk on OpenShift " + str(params["body"]["text"])}
wsk -i action update msgaction msgaction.py
wsk -i action invoke msgaction --param body '{"text":"my stuff"}' --result
{ “payload”: “Python on OpenWhisk on OpenShift my stuff” }
wsk -i activation get -l # see the details, logs
@burrsutter](https://image.slidesharecdn.com/serverlessandserverfull-july2018-180725221452/85/Serverless-and-serverfull-where-microservices-compliments-serverless-40-320.jpg)
Uploaded byJudy Breedlove
Serverless and serverfull - where microservices compliments serverless
The document discusses the relationship between serverless and microservices architectures. It provides links to resources for learning about microservices, serverless functions, Istio, and OpenWhisk. Short snippets of code demonstrate how to write actions for OpenWhisk in JavaScript, Python, and Java. The document advocates leveraging third-party services (BaaS) and custom code run in containers (FaaS) to build serverless applications, while microservices can also be integrated through long-running containers and functions.
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Similar to Serverless and serverfull - where microservices compliments serverless
Serverless and serverfull - where microservices compliments serverless
- 1. Serverless and Servicefull WhereMicroservices compliments Serverless @burrsutter burr@redhat.com bit.ly/serverlessjuly2018 Link
- 2. Demo: bit.ly/msa-instructions Slides: bit.ly/microservicesdeepdive VideoTraining: bit.ly/microservicesvideo Free eBooks from developers.redhat.com bit.ly/reactivemicroservicesbookbit.ly/javamicroservicesbook Microservices Introductory Materials @burrsutter Advanced Materials bit.ly/istio-tutorial bit.ly/serverlessjuly2018 Kubernetes for Java Developers learn.openshift.com/servicemesh bit.ly/faas-tutorial learn.openshift.com/serverless
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- 5. “Our ancestors calledit magic, but you call it [computer] science. I come from a land where they are one and the same.” —THOR
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- 13. Network of Services- Mesh @burrsutter
- 14. Microservices own theirData @burrsutter
- 15. Multiple Points ofEntry @burrsutter
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- 17. “Change is theessential process of all of existence.” —SPOCK
- 18. Let there beFunctions @burrsutter
- 19. Short History ofServerless * Only supports JavaScript Only for stateless, short-lived, simple applications AWS S3 March 2006 AWS Lambda November 2014 * AWS EC2 August 2006 Serverless Described Thoughtworks August 2016 Serverless Coined October 2012 Serverless Assess Thoughtworks Radar April 2016 AWS Dynamo DB January 2012 Firebase September 2011 Iron.io July 2011 Google Cloud Function Feb 2016 Azure Functions Mar 2016 Pivotal Function Service Dec 2017 Oracle Functions Sept 2016 IBM Bluemix OpenWhisk Feb 2016 Oracle Fn Project Oct 2017 @burrsutter
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- 21. Microservices Serverless Functions Your Control Long-LivedProcesses Known Programming Model Often Sync Request-Response Mature: IDE Integration Debuggers Tracers Monitoring CI/CD Cloud Control Short-Lived Processes New Programming Model Event-Driven Async Immature: ? @burrsutter
- 22. The first questionis “is there a suitable service I can consume?” before “is there something I can buy and set up using a cloud provider?”. Thoughtworks Nov 29 2017 @burrsutter
- 23. @burrsutter It is Serverless,because of SaaS (managed by another party services).
- 24. Serverless Defined Serverless architecturesrefer to applications that significantly depend on third-party services (knows as Backend as a Service or "BaaS") or on custom code that's run in ephemeral containers (Function as a Service or "FaaS"), the best known vendor host of which currently is AWS Lambda. By using these ideas, and by moving much behavior to the front end, such architectures remove the need for the traditional 'always on' server system sitting behind an application. Depending on the circumstances, such systems can significantly reduce operational cost and complexity at a cost of vendor dependencies and (at the moment) immaturity of supporting services. https://martinfowler.com/articles/serverless.html @burrsutter
- 25. It is allabout the Services @burrsutter
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- 36. Business Logic Application Data Containers OS Virtualization Server, Storage, Network Container asa Service Business Logic Application Data Runtime OS Virtualization Server, Storage, Network Infrastructure as a Service Business Logic Application Data Containers OS Virtualization Server, Storage, Network Platform as a Service Business Logic Application Data Containers OS Virtualization Server, Storage, Network Backend as a Service Business Logic Application Data Containers OS Virtualization Server, Storage, Network Function as a Service Platform Responsibilities Business Logic Application Data Runtime OS Virtualization Server, Storage, Network On Premises @burrsutter
- 37. Apache OpenWhisk ● OpenSource incubating under Apache ● A FaaS platform to execute functions written in: ○ JavaScript ○ Swift ○ Java ○ Python ○ PHP ○ Docker ○ Go ● Deployable on ○ Any platform where docker can be run ○ Kubernetes/OpenShift
- 38. Terms ● Actions ○ Astateless code snippet that gets executed (aka Functions) ● Package ○ A bundle of actions and feeds synonymous to Java Packages ● Feeds ○ Acts as Interface between external Event Sources and OpenWhisk Actions ● Triggers ○ Stimulus of external Events via Feeds ● Rules ○ Ties one or more Triggers to an Action or vice-versa ● Activation ○ Records the output/response of Running/Ran actions @burrsutter
- 39. Action (aka Function)JavaScript function main(params) { console.log("JS msgaction args: %j", params); Object.keys(params["body"]).forEach(function(key) { console.log("%s: %j", key, params["body"][key]) }); return { payload: 'JavaScript on OpenWhisk on OpenShift ' + params.body.text}; } wsk -i action update msgaction msgaction.js wsk -i action invoke msgaction --param body '{"text":"my stuff"}' --result { “payload”: “JavaScript OpenWhisk on OpenShift my stuff” } wsk -i activation get -l # see the details, logs @burrsutter
- 40. Action (aka Function)Python def main(params): print "Py msgaction params: " + str(params) for key in params["body"]: print key, params["body"][key] return { "payload" : "Python on OpenWhisk on OpenShift " + str(params["body"]["text"])} wsk -i action update msgaction msgaction.py wsk -i action invoke msgaction --param body '{"text":"my stuff"}' --result { “payload”: “Python on OpenWhisk on OpenShift my stuff” } wsk -i activation get -l # see the details, logs @burrsutter
- 41. Action (aka Function)Java public static JsonObject main(JsonObject params) { System.out.println("msgaction params: " + params); JsonObject body = params.get("body").getAsJsonObject(); for (Map.Entry<String, JsonElement> entry : body.entrySet()) { System.out.println(entry.getKey() + " " + entry.getValue().getAsJsonPrimitive().getAsString()); } JsonObject response = new JsonObject(); response.addProperty("payload", "Java on OpenWhisk on OpenShift " + params.getAsJsonObject("body").get("text").getAsString()); return response; } wsk -i action update msgaction target/actionjava.jar --main com.example.FunctionApp wsk -i action invoke msgaction --param body '{"text":"my stuff"}' --result { “payload”: “Java on OpenWhisk on OpenShift my stuff” } wsk -i activation get -l # see the details, logs mvn clean package
- 42. maven archetype mvn archetype:generate -DarchetypeGroupId=org.apache.openwhisk.java -DarchetypeArtifactId=java-action-archetype -DarchetypeVersion=1.0-SNAPSHOT -DgroupId=com.example -DartifactId=actionjava -Dversion=1.0-SNAPSHOT -DinteractiveMode=false bit.ly/faas-tutorial learn.openshift.com/serverless @burrsutter
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- 44. Cloudevents https://cloudevents.io/ The lack ofa common way of describing events means developers must constantly re-learn how to receive events. This also limits the potential for libraries, tooling and infrastructure to aide the delivery of event data across environments, like SDKs, event routers or tracing systems. The portability and productivity we can achieve from event data is hindered overall.
- 45. Serverless and Servicefull WhereMicroservices compliments Serverless @burrsutter burr@redhat.com bit.ly/serverlessjuly2018 Link