Eric Windisch - Building Composable Serverless Apps
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Presented at ServerlessConf NYC 2016. Serverless deployment is enabling the development of a new class of functional applications. Events will not only originate from classic applications, but from serverless functions themselves. Suddenly, applications are becoming distributed, composed of a stack of serverless functions. While serverless offers to eliminate server operations, developers must be prepared to manage their application lifecycle at the application layer. We'll use open source tools to demonstrate function composition and serverless lifecycle management.
![1. Find/discover/identify door camera
2. Create workflow:
a. Take snapshot(s) using camera API (or accept as event)
b. Upload snapshot(s) to Google Vision API
c. Retrieve results JSON: [
"weapon",
"gun",
"person",
"male",
etc...
]
d. Condition: if not person && weapon {
exit
}
e. Use API to text $number
3. Register event (webhook, cron job, etc).](https://image.slidesharecdn.com/lv0xyjyyrlckgckzbklp-signature-b189199d7a60f8d6b238d3412bee5b6acc09055bca696fb21a0373c39d62b1a7-poli-160609094452/85/Eric-Windisch-Building-Composable-Serverless-Apps-14-320.jpg)
![var iopipe = require("iopipe")()
var Dockaless = require("dockaless")
var dals = Dockaless()
export.handler = iopipe.define(
iopipe.property("url"),
iopipe.fetch,
dals.make_lambda("ffmpeg", [ "-i", "pipe:0", "-vf", "scale=320:240", "pipe:1" ])
)](https://image.slidesharecdn.com/lv0xyjyyrlckgckzbklp-signature-b189199d7a60f8d6b238d3412bee5b6acc09055bca696fb21a0373c39d62b1a7-poli-160609094452/85/Eric-Windisch-Building-Composable-Serverless-Apps-15-320.jpg)
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Eric Windisch - Building Composable Serverless Apps
- 1. Building Composable Serverless Apps Eric Windisch IOpipe, Inc.#iopipe
- 2. Eric Windisch CEO, Co-founder Twitter: @ewindisch Email: [email protected] Contributor:
- 3. Apache 2.0 licensed Composion / Chaining Code sharing Scatter/Gather Run anywhere (not just AWS) NodeJS module (Go library - experimental) CLI tool is...
- 4. Compose: Inline functions Stored functions Deployed Serverless functions HTTP endpoints
- 5. GPU EXEC module.exports = iopipe.define( function(event, context) { context.done(event) } ) Docker Raspberry Pi Local CPU Ship, Run, Deploy anywhere
- 6. $ iopipe pull ewindisch/watson-natural-language-classifier
- 8. Functional functions - map // "for each" - tee // fork - reduce // array to scalar - etc... Functionsthat takeoutsideparameters and return composablefunctions. Compatiblewith Rambda
- 11. Amazon Echo trademark of Amazon, Inc. All rights reserved. "Alexa, If someoneapproaches my door with aweapon, text me."
- 12. ?I ' m sor r y Dave, I cannot do t hat . ? - - Hal 9000 2001: A Space Odyssey (1968) - IMDb
- 14. 1. Find/discover/identify door camera 2. Create workflow: a. Take snapshot(s) using camera API (or accept as event) b. Upload snapshot(s) to Google Vision API c. Retrieve results JSON: [ "weapon", "gun", "person", "male", etc... ] d. Condition: if not person && weapon { exit } e. Use API to text $number 3. Register event (webhook, cron job, etc).
- 15. var iopipe = require("iopipe")() var Dockaless = require("dockaless") var dals = Dockaless() export.handler = iopipe.define( iopipe.property("url"), iopipe.fetch, dals.make_lambda("ffmpeg", [ "-i", "pipe:0", "-vf", "scale=320:240", "pipe:1" ]) )
- 20. f4(f3(f2(f1(x)))) == (f4 ? f3 ? f2 ? f1)(x) == iopipe.define(f1, f2, f3, f4)(x)
- 22. OPS
- 26. How often is a function called? How much memory does it use? How long does it run? Estimate deployment/usage costs How functions can be composed.
- 28. An app that matches spoken words to serverless functions. #NoDev
- 29. DIY Serverless "Alexa" powered by Watson