an introduction to microservices with the serverless framework · @fmc_sea an introduction to...

An Introduction to Microservices with the Serverless Framework

Fernando Medina CoreySolutions ArchitectServerless Inc.

@fmc_sea

What are we doing?

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Our Goals

Let’s get our environment ready

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Create an AWS Account

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https://aws.amazon.com/free

Install the AWS CLI

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https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-install.html

(This assumes you have Python3 installed)

Configure the AWS CLI@fmc_sea An Introduction to Microservices with the Serverless Framework �8

https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html

Install the Serverless Framework

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https://serverless.com/framework/docs/getting-started/

Mac/Linux Windows

Install the Serverless Framework

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https://serverless.com/framework/docs/getting-started/

(With npm)

Clone the Project

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https://github.com/fernando-mc/serverless-devweek2020

Develop@fmc_sea An Introduction to Microservices with the Serverless Framework �12

What are we developing?

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How does it work?

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What’s the code look like?

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What’s the code look like?

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generate_code.py

1. Phone number as input2. (re)generates verification code3. Sends the code to the number

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get_votes.py

1. Gets vote counts for all songs2. Returns them to the frontend

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vote.py

1. Verified phone number/code 2. Sets the code as used3. Increments a vote counter4. Returns the new vote count

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app.js

1. Handles interacting with the API2. Updates vote counts in the UI3. Provides helper text for the user

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index.html

1. Snazzy Spotify embeds!2. Pretty Semantic UI buttons!3. Cool vote counters!

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serverless.yml

1. Creates Lambda Functions2. Creates API Gateway Endpoints3. Creates our DynamoDB table4. Sets the service’s permissions

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What’s in serverless.yml?

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Service Configuration

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Provider details

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Provider details - IAM Roles

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Provider details - IAM Roles

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Function Definitions

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Function Definitions

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Function Definitions

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Resources

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Optional Packaging

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How many total lines of code?

(README not included)

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Total lines: 436

Deploy@fmc_sea An Introduction to Microservices with the Serverless Framework �41

Deployment Options@fmc_sea An Introduction to Microservices with the Serverless Framework �42

Local AWS Keys(2 options)

Using the Serverless Dashboard

Using Serverless CI/CD

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AWS Keys &

Serverless Safeguards

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AWS Keys &

Serverless Safeguards

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AWS Keys &

Serverless Safeguards

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Deploying with Local Keys

Deploying via the Serverless

Dashboard

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Deploying via the Serverless

Dashboard

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Deploying via the Serverless

Dashboard

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Deploying via the Serverless Dashboard

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What are we doing?

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DEMO TIME!1. Review app/org values2. Create/add an IAM role3. Create Profiles and

Safeguards4. Deploy a `dev` and

`prod` service5. Add API Endpoints to

our frontend

Just in case…

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The demo went great Why did I do a live demo?

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Debug

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Running Our Frontend

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DEMO TIME!

1. Run our frontend2. Try to vote3. Try to vote again!

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Monitoring

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DEMO TIME!1. Explore function logs2. Review specific invocations

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Users may vote every five minutes

Let’s “Build” that@fmc_sea An Introduction to Microservices with the Serverless Framework �74

DEMO TIME!

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DEMO TIME!

Deploy to `dev`

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How would we get this to prod?

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Reality is more complicated…

https://serverless.com/learn/guides/cicd/

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Deploying Our Frontend

BONUS DEMO TIME?

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We eat our own dog food

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Thank you!Office Hours: 9am tomorrow - Room 212

Unofficial Office Hours: Right nowBy appointment - (DM me)

@fmc_sea