Deploying with Apex - Speaker Deck

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Deploying with Apex David Blooman @dblooman

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FundApps makes compliance simple for ﬁnancial institutions

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SERVERLESS

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LAMBDA

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DEPLOY FAST

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DEPLOY EASILY

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DEPLOY CONSISTENTLY

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DEPLOY CONSISTENTLY

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• Add new code • Update conﬁguration • Package everything • Handle versioning

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Works for an entire team

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Plays nice with Continuous Integration

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APEX

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“Apex lets you build, deploy, and manage AWS Lambda functions with ease”

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• Batteries included but optional • Environment variable population via command-line, file, or inline config • Multiple environments via project.ENV.json and function.ENV.json files

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• Transparently generates a zip for your deploy • Ignore deploying ﬁles with .apexignore • Function rollback support

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{ "name": "demo", "description": "demo for meetup", "memory": 128, "timeout": 5, "role": "arn:aws:iam::00000000:role/lambda_function", "environment": {} } /project.json

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{ "name": "function1", "description": "demo for meetup", "memory": 256, "timeout": 5, "role": "arn:aws:iam::00000000:role/lambda_function", "environment": {} } /function.json

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$ apex deploy

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• Create zip ﬁle • Upload • Add conﬁguration • Update ENV vars

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No CloudFormation

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At FundApps: Everything created in Terraform

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resource "aws_lambda_function" "test_lambda" { filename = "lambda_function_payload.zip" function_name = "lambda_function_name" role = "${aws_iam_role.iam_for_lambda.arn}" handler = "exports.test" source_code_hash = "${base64sha256(file("function_payload.zip"))}" environment { variables = { foo = "bar" } } }

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Apex updates the zip ﬁle and ENV variables

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Why Terraform?

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Infrastructure as an organism

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Split infrastructure from the deployment

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Diffs

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Terraform + Apex

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DEPLOY CONSISTENTLY

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Continuous Integration

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Security

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Every Lambda has its own IAM role and policy

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Only deploy through CI

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Secrets and conﬁguration

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Consul

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Single point of truth • Consul • KMS • Etcd • Zookeeper • S3 • Credstash • CI server

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$ apex deploy -r eu-west-1 \ -s S3_BUCKET=$S3_BUCKET -s S3_REGION=$S3_REGION \ function_foo -e $environment -i $2 /deploy.sh

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Don’t want to check in variables to git

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ENV Vars are all encrypted in KMS now though, right?

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Apex doesn’t handle encryption Its still a manual process

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exports.handler = (event, context, callback) => { if (decrypted) { processEvent(event, context, callback); } else { const kms = new AWS.KMS({ region: 'eu-west-1' }); kms.decrypt({ CiphertextBlob: new Buffer(encrypted, 'base64') }, (err, data) => { if (err) { console.log('Decrypt error:', err); return callback(err); } decrypted = data.Plaintext.toString('ascii'); processEvent(event, context, callback); }); }

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Value Axis 0ms 300ms 600ms 900ms 1200ms 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Node w/ KMS Node w/o KMS

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0ms 4.5ms 9ms 13.5ms 18ms 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Node w/ KMS Node w/o KMS

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0ms 500ms 1000ms 1500ms 2000ms 1 2 3 4 5 6 7 8 9 10 Node w/ KMS Node w/o KMS Go w/ KMS Go w/o KMS

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0ms 75ms 150ms 225ms 300ms 2 3 4 5 6 7 8 9 10 Node w/ KMS Node w/o KMS Go w/ KMS Go w/o KMS

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We use Go, node.js and Python Apex supports Golang and Rust

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Apex Serverless Gordon Golang, Nodejs, Python, Java, Rust Nodejs, Python, Java, C# Golang, Nodejs, Python, Java

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Apex gives us ﬂexibility

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Deploying from EC2

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Apex is for you if: Total control of your infra and lots of ﬂexibility

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Thank you

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David Blooman @dblooman We’re hiring Software Engineers & Infrastructure Engineers fundapps.workable.com