This is an implementation of Vercel's Turborepo Remote Cache API endpoints used by the turborepo CLI command. This solution allows you to get control over where the cache arteficats are being stored.

The CLI tool currently supports the following targets for the cache arteficats:

• gcs: Google Cloud Storage
• s3: Amazon S3
• local: The local file system

You can execute this application by running when you want to store your cache artefacts on a Amazon S3 compatible cloud storage provider, it will start a HTTP server on port 8080:

./tapico-turborepo-remote-cache \
  --kind="s3" \
  --s3.endpoint="http://127.0.0.1:9000" \
  --s3.accessKeyId="minio" \
  --s3.secretKey="miniosecretkey" \
  --s3.region="eu-west-1" \
  --turbo-token="your-turbo-token"

Note: The above example can be used to test against the Minio instance of the docker-compose.yml file found in the dev-directory.

At this time the server doesn't support running over HTTPS, you might want to consider using a load balancer to expose the server over HTTPS to the internet.

You can download binaries of the applications via the Releases page, and pre-build docker images are available in the tapico-turborepo-remote-cache section in Packages section.

An example is available that demonstrate how to use the the Turbo remote cache server together with the Amazon S3 compatible object atorage Minio using Docker Compose, the example can be found in examples/with-docker-compose.

The server supports three kind of cloud storage, which are s3, gcs and local, the latter will store the cache artefects on the local file system on a relative path.

The configuration is currently handled via environment variables, the following are available:

• CLOUD_PROVIDER_KIND: s3, gcs or local
• BUCKET_NAME: the name of the bucket to store the cache artefacts
• LISTEN_ADDRESS: the address the server to listen to (defaults to: 127.0.0.1:8080) when deploying it to the internet you should consider using 0.0.0.0:8080 instead, the 8080 representa the port.
• GOOGLE_CREDENTIALS_FILE: location the google credentials json file
• GOOGLE_PROJECT_ID: the project id
• GOOGLE_ENDPOINT: the endpoint to use for Google Cloud Storage (e.g. for emulator)
• AWS_ENDPOINT: the endpoint to connect to for Amazon S3
• AWS_ACCESS_KEY_ID: the Amazon acces key id
• AWS_SECRET_ACCESS_KEY: the Amazon secret access key
• AWS_S3_REGION_NAME: the region for Amazon S3
• CLOUD_SECURE: whether the endpoint is secure (https) or not, can be true or false
• CLOUD_FILESYSTEM_PATH: the relative path to the file system
• TURBO_TOKEN: comma seperated list of accepted TURBO_TOKENS

Alternatively, you can also use the CLI arguments:

usage: tapico-turborepo-remote-cache --turbo-token=TURBO-TOKEN [<flags>]

A tool to work with Vercel Turborepo to upload/retrieve cache artefacts to/from popular cloud providers

Flags:
      --help                     Show context-sensitive help (also try --help-long and --help-man).
  -v, --verbose                  Verbose mode.
      --kind="s3"                Kind of storage provider to use (s3, gcs, local). ($CLOUD_PROVIDER_KIND)
      --secure                   Enable secure access (or HTTPs endpoints).
      --bucket="tapico-remote-cache"
                                 The name of the bucket ($BUCKET_NAME)
      --enable-bucket-per-team   The name of the bucket
      --turbo-token=TURBO-TOKEN  The comma separated list of TURBO_TOKEN that the server should accept ($TURBO_TOKEN)
      --google.endpoint=GOOGLE.ENDPOINT
                                 API Endpoint of cloud storage provide to use ($GOOGLE_ENDPOINT)
      --google.project-id=GOOGLE.PROJECT-ID
                                 The project id relevant for Google Cloud Storage ($GOOGLE_PROJECT_ID).
      --google.credentials=GOOGLE.CREDENTIALS
                                 The path to the credentials file ($GOOGLE_APPLICATION_CREDENTIALS).
      --local.project-id=LOCAL.PROJECT-ID
                                 The relative path to storage the cache artefacts when 'local' is enabled ($CLOUD_FILESYSTEM_PATH).
      --s3.endpoint=S3.ENDPOINT  The endpoint to use to connect to a Amazon S3 compatible cloud storage provider ($AWS_ENDPOINT).
      --s3.accessKeyId=S3.ACCESSKEYID
                                 The Amazon S3 Access Key Id ($AWS_ACCESS_KEY_ID).
      --s3.secretKey=S3.SECRETKEY
                                 The Amazon S3 secret key ($AWS_SECRET_ACCESS_KEY).
      --s3.region=S3.REGION      The Amazon S3 region($AWS_S3_REGION_NAME).

Note: You can use the environment variable LISTEN_ADDRESS to control to the address the web-server should listen to. The default value currently is 127.0.0.1:8080.

Note: Most of the arguments also alternatively accepts a environment variable instead the environment name is between brackets. For example, if you want to specify the list of accepted Turborepo tokens you can also set the environment variable TURBO_TOKEN instead of using the --turbo-token-argument.

The service allows to store cache artefacts into Amazon S3 compatible cloud storage, or Google Cloud Storage. If the option --enable-bucket-per-team is enabled, the service will try to create a new bucket for each team id that's received.

Alternatively, you can also use a single bucket, the name of the bucket can be controlled through the --bucket option. Using this approach does mean that each of the passed team id's will become a subdirectory in the bucket, and the directory will contain all the cache artefacts uploaded by Turborepo.

Two approaches are available to run the Tapico Turborepo Remote cache solution, one is to use the docker image that is available on Github Packages at: https://github.com/Tapico/tapico-turborepo-remote-cache/pkgs/container/tapico-turborepo-remote-cache the second solution is to download the binary via the Github Releases at: https://github.com/Tapico/tapico-turborepo-remote-cache/releases

You can deploy the service in your preferred way, we have been successfully running it via Google Cloud Run, but via Kubernetes or any solution that accepts a docker image or Go binary should work.

Before you can run the service on Cloud Run, you need to make sure that you have the docker image available in the Google Container Registry or Artefacts registry. If you are authenticated to the registry of choice, you can tag the docker image and push it to the registry.

For the artefacts registry the following works:

# Pull the docker image from Github Packages you want to use via:
docker pull ghcr.io/tapico/tapico-turborepo-remote-cache:sha-9229998

# Tag the docker image for the container registry, e.g.
docker tag ghcr.io/tapico/tapico-turborepo-remote-cache:sha-9229998 europe-west2-docker.pkg.dev/dev-sandbox-20211210/devops/tapico-remote-cache
# Note: You can find the `pkg.dev url you need to use in Google Cloud Console

# Last step, is to push the docker image to the container registry
docker push europe-west2-docker.pkg.dev/dev-sandbox-20211210/devops/tapico-remote-cache

After the Docker image is available, you can create a new deployment in Cloud Run and select the docker image that you pushed to the Google container registry. You can configure the deployment to define the appropriate environment variables or specify the run arguments of your choice.

Currently, you need to also set a special environment variable that defines the address the server should listen to for incoming requests to be 0.0.0.0:8080 to ensure the Tapico Turborepo Remote cache can receive requests on Cloud Run.

After you have started the server you need to change the configuration of Turbo to ensure it's pointing to our server for the API server. Currently, any of the login functionality is not implemented. You can adapt the .turbo/config.json-file in the root of your mono repo.

NOTE: You don't have to run turbo login step.

{
  "teamId": "team_blah",
  "apiUrl": "http://127.0.0.1:8080"
}

NOTE: teamId must start with "team_".

After this you should be able to run turbo e.g. turbo run build --force to force the generating of new cache artefacts and upload it to our server.

Alternatively, you can also use the arguments --api="http://127.0.0.1:8080" --token="xxxxxxxxxxxxxxxxx"

Token can also be specified as environment variable TURBO_TOKEN=xxxxx, for example: TURBO_TOKEN=xxxx turbo run build

If the option --enable-bucket-per-team is enabled, the teamId in .turbo/config.json is used to generate a bucket in the cloud storage provider, as the id might be an invalid name the team identifier a MD5 hash is generated and used as the bucket name.

In the dev directory you can find a docker compose file which starts, a Minio S3 compatible service, for testing the Amazon S3 integration, the path for this is: http://127.0.0.1:9000

Another service running is a fake Google Cloud Storage server on port http://127.0.0.1:9100. If you want to use this you need to make sure you set the following environment variable:

export STORAGE_EMULATOR_HOST=http://localhost:9100

The STORAGE_EMULATOR_HOST is used to activate a special code path in the Google Cloud Storage library for Go.

Tip: If the Remote Cache is not working as expected, you can use an application like ProxyMan and force turbo CLI the application's HTTP proxy so you can get insight in the outgoing HTTP requests. To do this, you can run turbo the following way HTTP_PROXY=192.168.1.98:9090 turbo run build.

You might need to use HTTPS_PROXY instead when the API server location is running over HTTPS instead of HTTP.

Thank you to the developers of the libraries used by this application, especially the authors of the stow, mux, kingpin, and the opentelemetry-go libraries.

Thank you to Jared Palmer for building the awesome Turborepo CLI tool!