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Docs Worker Pool

As part of the Docs Tools Next Generation Project, the Docs Worker Pool seeks to make the build process for developers both easier and more scalable for developers.

The Docs Worker Pool operates on ECS Fargate. The serverless framework and cloudformation are used to automate infrastructure provisioning and management. Going forward, any new buckets should be specified in infrastructure/ecs-main/buckets.yml

For specific documentation on the Enhanced Autobuilder, Please visit the cdk-infra/README.md file.

To Add new properties

All our properties are managed in parameter store and pulled by serverless framework during deploy time and pushed into the Task environment as part of task definition.

To add a new property:

  • Add property to parameter store for all environments (stg/prd) by following the convention as other properties
  • Go to infrastructure/ecs-main/serverless.yml custom section
  • Define the variable pointing to the right parameter store path
  • Go to infrastructure/ecs-main/ecs-service.yml TaskDefinition section
  • Add the new property to the ContainerDefinitions/Environment section

Build and Run Docker Image for local testing

The npm build args are required for the portion of the dockerfile that installs the snooty-frontend. NPM_CONFIG__AUTH and NPM_CONFIG_EMAIL are environment variables available in our working directory. NPM_CONFIG_{OPTION} environment variables can actually be used instead of the ~/.npmrc file. The reason we need the build args to be NPM_BASE_64_AUTH and NPM_EMAIL is because that's what's expected in the .npmrc within snooty-frontend.

docker build --tag=workerpool --build-arg NPM_BASE_64_AUTH=${NPM_CONFIG__AUTH} --build-arg NPM_EMAIL=${NPM_CONFIG_EMAIL} .
docker run \
	--env MONGO_ATLAS_USERNAME \
	--env MONGO_ATLAS_PASSWORD \
	--env AWS_ACCESS_KEY_ID \
	--env AWS_SECRET_ACCESS_KEY \
	--env GITHUB_BOT_USERNAME \
	--env GITHUB_BOT_PASSWORD \
	--env DB_NAME \
	--env XLARGE \
	--env SNOOTY_ENV \
	--env FASTLY_TOKEN \
	--env FASTLY_DOCHUB_MAP \
	--env FASTLY_SERVICE_ID \
	workerpool
  • MONGO_ATLAS_USERNAME and MONGO_ATLAS_PASSWORD is username/password of atlas database
  • AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY are needed for uploading to S3 via mut
  • GITHUB_BOT_USERNAME and GITHUB_BOT_PASSWORD are needed so builder can access private repos
  • DB_NAME allows the indication of a pool database (pool, pool_test)
  • XLARGE true or false indicates whether this instance will run on an XLARGE server or not
  • SNOOTY_ENV indicates whether the build environment is stage, prod, or dev
  • FASTLY_TOKEN is needed for connecting to the Fastly edge dictionary
  • FASTLY_DOCHUB_MAP is the id of the redirect map that we publish dochub links to
  • FASTLY_SERVICE_ID is the id of the service used for dochub

If you are running a local version of the docker image for testing, we have a separate staging environment setup. Testing in this environment is automated through the "stage" branch. Add the following env variables to the docker run command:

--env DB_NAME

Run Tests

cd worker
npm install --dev
npm test  // runs ~ jest --detectOpenHandles --coverage

Run Linter

cd worker
npm install --dev
./node_modules/.bin/eslint .

See the spec doc for more details.

Branches

Development in this repository can be done via forks or branches. Currently, we support a master branch and meta branch. In general, the development workflow is to open pull requests against master, and to test master prior to creating new tags for a release.

In general, the git workflow within this repository loosely follows https://www.atlassian.com/git/tutorials/comparing-workflows/gitflow-workflow .

Meta

meta contains various makefiles and .yaml files used for configuration. Changes or additions to/of makefiles and .yaml for publishing purposes should be performed against this branch. There is no general requirement to keep meta up to date with master or integration.

Master

master is treated as a running pre-production feature branch. Changes should not go into master until properly tested for regressions in an acceptance environment. It is an expectation that hotfixes may have to occur on occasion - on such an occasion, a feature branch should be made from the commit hash of the last release tag, and not from the head of master. Master may contain changes that have yet to be fully tested for a production release.

Release Tags

Each release tag represents a presumptive stable release - with the most recent release tag representing the current state of our production environment.

Release Process

docs-worker-pool contains various triggers for release to higher environments. Currently, the repository supports an integration environment (reflecting the state of the master branch) and a production environment (reflecting the state of the most recent release tag).

Integration Environment

  • Merge a pull request or otherwise push a commit to master branch.
  • Verify that the deploy-integration-ec2 workflow has executed successfully.

Production Environment

  • Create release tags. We currently follow semver standards.
  • If you don't have push access, open an issue or otherwise contact a contributor with administrator privileges.
  • Verify that the deploy-production-ec2 workflow executed successfully for both job runs across both production instances.

Serverless Development

Documentation

Installation

npm install -g serverless

AWS Config

The serverless framework looks for credentials in ~/.aws/credentials. So we need to set a profile there in addition to aws sso login.

[docs-sls-admin]
aws_access_key_id=REDACTED
aws_secret_access_key=REDACTED

Deploy Single Function

sls deploy function --stage dev --function {FunctionName}

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