Cloud Functions

What are Cloud Functions anyway? What does it mean to have a serverless environment? In this talk, we will answer these questions and we will explore with more detail some applications such as REST APIs and Conversational Bots. The attendee will learn the basics of Functions as a service (FaaS) and a few details of two different applications.

Transcript

1. CLOUD FUNCTIONS
2. HELLO! I'M NELIDA @TOLKIANA DETROIT LABS
3. WHAT ARE CLOUD FUNCTIONS? !
4. FAAS - FUNCTION AS A SERVICE
5. Cloud Functions are a serverless execution environment for building and connecting cloud services.
6. HOW DO THEY WORK?!
7. Responds to events Cloud Services Emit events Writes back Invokes other services Other APIs Cloud Functions
8. APPLICATIONS ✍
10. > REST APIs
11. > REST APIs > React to events and send push notifications
12. > REST APIs > React to events and send push notifications > Perform intensive tasks
13. > REST APIs > React to events and send push notifications > Perform intensive tasks > Integrate with other cloud services and APIs (Writing bots)
14. GETTING STARTED !
15. WHAT DO WE NEED? Tool For this talk Other options Language Javascript Typescript, Python, Go Cloud Service Firebase Google Cloud CLI Firebase CLI gcloud CLI
16. OTHER TOOLS
17. OTHER TOOLS > Node.js
18. OTHER TOOLS > Node.js > npm
19. WRITING A HELLO WORLD FUNCTION $ npm install -g firebase-tools $ mkdir your_functions_directory $ cd your_functions_directory $ firebase login $ firebase init
20. WRITING A HELLO WORLD FUNCTION $ npm install -g firebase-tools $ mkdir your_functions_directory $ cd your_functions_directory $ firebase login $ firebase init
21. WRITING A HELLO WORLD FUNCTION $ npm install -g firebase-tools $ mkdir your_functions_directory $ cd your_functions_directory $ firebase login $ firebase init
22. WRITING A HELLO WORLD FUNCTION $ npm install -g firebase-tools $ mkdir your_functions_directory $ cd your_functions_directory $ firebase login $ firebase init
23. WRITING A HELLO WORLD FUNCTION $ npm install -g firebase-tools $ mkdir your_functions_directory $ cd your_functions_directory $ firebase login $ firebase init
24. DEMO !
25. EXAMPLE 1: APIS ⚙
26. // index.js const functions = require('firebase-functions'); const admin = require('firebase-admin'); admin.initializeApp(); // This will be my /customers endpoint exports.customers = functions.https.onRequest((request, response) => { const uid = request.query.uid; const dataBase = admin.database(); // some other code to get info from the db here ... return query.once("value").then((snapshot) => { return response.send(snapshot); }).catch((error) => { return response.status(500).end(); }); });
27. // index.js const functions = require('firebase-functions'); const admin = require('firebase-admin'); admin.initializeApp(); // This will be my /customers endpoint exports.customers = functions.https.onRequest((request, response) => { const uid = request.query.uid; const dataBase = admin.database(); // some other code to get info from the db here ... return query.once("value").then((snapshot) => { return response.send(snapshot); }).catch((error) => { return response.status(500).end(); }); });
28. // index.js const functions = require('firebase-functions'); const admin = require('firebase-admin'); admin.initializeApp(); // This will be my /customers endpoint exports.customers = functions.https.onRequest((request, response) => { const uid = request.query.uid; const dataBase = admin.database(); // some other code to get info from the db here ... return query.once("value").then((snapshot) => { return response.send(snapshot); }).catch((error) => { return response.status(500).end(); }); });
29. // index.js const functions = require('firebase-functions'); const admin = require('firebase-admin'); admin.initializeApp(); // This will be my /customers endpoint exports.customers = functions.https.onRequest((request, response) => { const uid = request.query.uid; const dataBase = admin.database(); // some other code to get info from the db here ... return query.once("value").then((snapshot) => { return response.send(snapshot); }).catch((error) => { return response.status(500).end(); }); });
30. // index.js const functions = require('firebase-functions'); const admin = require('firebase-admin'); admin.initializeApp(); // This will be my /customers endpoint exports.customers = functions.https.onRequest((request, response) => { const uid = request.query.uid; const dataBase = admin.database(); // some other code to get info from the db here ... return query.once("value").then((snapshot) => { return response.send(snapshot); }).catch((error) => { return response.status(500).end(); }); });
31. // index.js const functions = require('firebase-functions'); const admin = require('firebase-admin'); admin.initializeApp(); // This will be my /customers endpoint exports.customers = functions.https.onRequest((request, response) => { const uid = request.query.uid; const dataBase = admin.database(); // some other code to get info from the db here ... return query.once("value").then((snapshot) => { return response.send(snapshot); }).catch((error) => { return response.status(500).end(); }); });
32. // index.js const functions = require('firebase-functions'); const admin = require('firebase-admin'); admin.initializeApp(); // This will be my /customers endpoint exports.customers = functions.https.onRequest((request, response) => { const uid = request.query.uid; const dataBase = admin.database(); // some other code to get info from the db here ... return query.once("value").then((snapshot) => { return response.send(snapshot); }).catch((error) => { return response.status(500).end(); }); });
33. // index.js const functions = require('firebase-functions'); const admin = require('firebase-admin'); admin.initializeApp(); // This will be my /customers endpoint exports.customers = functions.https.onRequest((request, response) => { const uid = request.query.uid; const dataBase = admin.database(); // some other code to get info from the db here ... return query.once("value").then((snapshot) => { return response.send(snapshot); }).catch((error) => { return response.status(500).end(); }); });
34. // index.js const functions = require('firebase-functions'); const admin = require('firebase-admin'); // REST API functions exports.customers = functions.https.onRequest((request, response) => { // ... Implementation for this endpoint }); exports.accounts = functions.https.onRequest((request, response) => { // ... Implementation for this endpoint }); exports.transactions = functions.https.onRequest((request, response) => { // ... Implementation for this endpoint }); // https://cloud-function-url/customers // https://cloud-function-url/accounts // https://cloud-function-url/transactions
35. // index.js const functions = require('firebase-functions'); const admin = require('firebase-admin'); // REST API functions exports.customers = functions.https.onRequest((request, response) => { // ... Implementation for this endpoint }); exports.accounts = functions.https.onRequest((request, response) => { // ... Implementation for this endpoint }); exports.transactions = functions.https.onRequest((request, response) => { // ... Implementation for this endpoint }); // https://cloud-function-url/customers // https://cloud-function-url/accounts // https://cloud-function-url/transactions
36. // index.js const functions = require('firebase-functions'); const admin = require('firebase-admin'); // REST API functions exports.customers = functions.https.onRequest((request, response) => { // ... Implementation for this endpoint }); exports.accounts = functions.https.onRequest((request, response) => { // ... Implementation for this endpoint }); exports.transactions = functions.https.onRequest((request, response) => { // ... Implementation for this endpoint }); // https://cloud-function-url/customers // https://cloud-function-url/accounts // https://cloud-function-url/transactions
37. EXAMPLE 2: BOTS !
38. WHAT DO WE NEED?
39. WHAT DO WE NEED? > A Slack app
40. WHAT DO WE NEED? > A Slack app > Dialogflow
41. ADVANTAGES
42. ADVANTAGES > Easy to get started
43. ADVANTAGES > Easy to get started > Easy to deploy
44. ADVANTAGES > Easy to get started > Easy to deploy > Well documented
45. ADVANTAGES > Easy to get started > Easy to deploy > Well documented > Not a huge learning curve
46. ADVANTAGES > Easy to get started > Easy to deploy > Well documented > Not a huge learning curve > They have tons of applications and integrations
47. DISADVANTAGES? !
48. RESOURCES > https://github.com/tolkiana/bank_functions > https://firebase.google.com/docs/functions/get- started > https://codeburst.io/express-js-on-cloud-functions- for-firebase-86ed26f9144c > https://medium.com/google-developers/whats-the- relationship-between-firebase-and-google-
49. THANKS