2022 SF Summit - Improving Developer Experience with CDK

S A N F R A N C I S C O | A P R I L 2 0 , 2 0 2 2

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Improving developer experience
with CDK
Casey Lee
D E V 2 0 2
Chief Technology Officer
Gaggle

Gaggle’s Transformation Story
Blocked Items
190,616,612
105%
Messages
5,155,335,282
350%
Files
6,276,549,392
489%
PSS
20,395
61%
Human Items
38,815,291
34%
Lives Saved
1,338
50%

Challenge:
“The tech team never gets
anything done...when they do,
it is months late!”

% Efficiency = (# Engineers) / (WIP)
WIP = (Lead Time) x (Deploy Frequency)
High WIP, Low Efficiency

Challenge:
Inability to
work in
isolation
results in long
feedback loops

Solution: Provision separate AWS
accounts per developer

Challenge: Unable to use
existing CI/CD to deploy
into dev account

Solution: Use CDK
for each
application

Solution: Use CDK for each application
from gaggle_cdk.core import S3Website, S3JsonFile, apply_permissions_boundary
class AppStack(core.Stack):
def __init__() -> None:
s3_website = S3Website(
self,
hosted_zone=hosted_zone,
website_sources=s3deploy.Source.asset(artifact)
)
config = S3JsonFile(
bucket=s3_website.bucket,
object_key="assets/config.json",
values={
"version": os.getenv("CODEBUILD_RESOLVED_SOURCE_VERSION","-"),
"identityProviderId": user_pool_idp,
"baseApiUrl": base_url,
}
)

Solution: Automate IAM Permission Boundary
from gaggle_cdk.core import apply_permissions_boundary
class AppStack(core.Stack):
def __init__(self) -> None:
apply_permissions_boundary(self)

Solution: Automate Tag Policy
tags = GaggleTags(
application=application,
environment=environment,
team=team,
some_random_tag=”foo",
)
# Create a stack, add resources to it
stack = core.Stack(app, "my-stack")
# Apply the tags to the stack
tags.apply(stack)
# Additionally you can apply tags to the entire app
tags.apply(app)

Challenge: Deploying dependencies

Solution:
Automate
build/deploy of
dependencies
from source

Solution: Automate build/deploy of
dependencies from source
# Define the commands needed to build build:
- npm run build
# Define the dependencies to load
dependencies:
- repo: gaggle-net/service-a.git
ref: main
# Define the applications to run locally
- basedir: infrastructure
stacks: ui-stack
context:
my-context-key: my-context-value

Challenge: QA
is now a
bottleneck to
delivery
process

Solution:
Separate
integration
accounts per
team

Solution: Create
pipeline for
each service

Solution: Create pipeline for
each service
from aws_cdk import core
from gaggle_cdk.core.pipelines import DeploymentPipeline
class ExamplePipelineStack(core.Stack):
def __init__(self,scope: core.Construct):
pipeline = DeploymentPipeline(
self,
github_repo="sample-api",
github_org="gaggle-net",
integration_account="100000000000",
staging_account="200000000000",
production_account="300000000000",
)

Challenge: Many
accounts can be
expensive!!

Solution:
Budget
Automation

# The 'org' sections defines settings for the entire organization
org:
owner: org-owner@gaggle.net
workspace: T0000000
channel: ZZZZZZZ
default_daily_limit: 5
# Teams are containers for accounts.
# 'owner' - email address to notify for overages
# 'channel' - slack channel to notify for overages
teams:
- name: FOO
owner: alice@gaggle.net
channel: YYYYYYYYYYY
# Accounts are matched by 'name'.
# - 'owner' an additional 'owner' can be specified to be included in overage emails.
# - 'daily_limit' can be overridden per team
account_costs:
- name: developer-alice
- name: developer-bob
owner: bob@gaggle.net
Solution: Budget Automation

from account_budget import AccountBudget
class BudgetsStack(core.Stack):
def __init__(self) -> None:
for account in accounts:
b = AccountBudget(
self,
account_id=account.id,
daily_limit=daily_limit,
emails=[team.owner,account_cost.owner]
)
# create chatbot channel
aws_chatbot.SlackChannelConfiguration(
self,
slack_channel_id=config.org.channel,
slack_workspace_id=config.org.workspace,
notification_topics=[b.topic]
)

Results...

% Efficiency = (# Engineers) / (WIP)
WIP = (Lead Time) x (Deploy Frequency)
Kickoff Transformation

Thank you!
Casey Lee
@nektos
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2022 SF Summit - Improving Developer Experience with CDK

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