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A sample of using Tilt for non-docker-focused repos.

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Overview

This repo is used as an example of how Tilt can be used to manage tasks within a microservice monorepo. This is roughly styled to be similar to how we at SOON_ use Tilt.

This is the companion repo to our Tilt At SOON_ blog post.

Structure

There are two microservices (if you can even call them that):

  • image-service/ - Provides /totallyRandomImage which gives you a "totally random" image.
  • name-service/ - Provides /name which gives you a random name from a list of names, as well as allows you to add names to the list.

Beyond that, there's a docker-compose.yaml file to provide a datastore-emulator container, as well as a UI for it.

Finally there is of course the Tiltfile which sets up the ever so wonderful Tilt for us.

Using this repo

Currently this example repo hasn't been made compatible with Windows (just use WSL), but should work on Linux and Mac.

Please install the following:

Then simply run tilt up && tilt down within your terminal. You can press Space within your terminal to open the Tilt UI in your browser.

Tilt

Tilt is configured to do the following things:

  • Execute the docker-compose.yaml file. You can see each container individually in the "Unlabeled" section of the Tilt UI.

    • If you examine the datastore-ui resource within Tilt, you'll see Tilt automatically displays a link above the log window so you don't need to keep the README up to date with the link - devs can discover it naturally in Tilt!
  • Provides a generic way to define Go microservices. The Tiltfile has more comments on how this works.

  • For each service:

    • A :test resource is created, which will run go test ./... anytime the source code or go mod files change.
      • This resource has a Show Cover Profile button to easily access the go coverage visualiser.
    • A :lint resource, which will run golangci-lint against the service when the source code changes.
    • A :serve resource, which will run your service locally, and restart iw when the source code changes.
      • If configured with test requests, buttons will appear above the log window to easily perform them. Have a look at the name-service for example!
      • Additionally a link to the main API endpoint will be added above the log window for easy discovery.

What should I do with this repo?

Play around with it! Launch Tilt; mess around with the code and see how Tilt automatically performs tasks when you do so; see if this pre-configured Tilt workflow feels good to use; and maybe even try adding a new microservice or two into the setup.

e.g.

  1. tilt up && tilt down.

  2. Press Space to open the UI.

  3. Open the name-service:serve resource.

  4. Use the Add Name button to add a few names.

  5. Press the link above the log window, and refresh a few times to see your new names show up.

  6. Open the datastore-ui resource in Tilt.

  7. Press the link above the log window, and see that its storing the names for name-service.

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A sample of using Tilt for non-docker-focused repos.

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