Skip to content

Latest commit

 

History

History
100 lines (56 loc) · 2.34 KB

task-dependencies.md

File metadata and controls

100 lines (56 loc) · 2.34 KB

Exercise: Task Dependencies

In this exercise we'll learn how you can configure tasks to depend on each other.

Note

If you haven't installed docker, no problem. There are two ways to solve it:

  1. go to https://www.docker.com/products/docker-desktop/ and install docker-desktop to your system. that's it
  2. exchange the deploy command in the movies project.json with echo 'thanks for deploying with austrian airlines'. This is cheap, but works.

0. Get to know the Problem

0.1 Delete the dist folder

Please delete the dist folder from your machine.

0.2 Execute deploy

Run the deploy command for the movies app.

execute deploy 
npx nx run movies:deploy

You will notice that it fails, as it requires to the dist folder to be present!

0.3 Explore the task graph

If you open the task graph for the movies:deploy target, you'll notice that is has no dependencies at all.

Run deploy task graph 
npx nx run movies:deploy --graph

So our main pain point here is that build is not getting executed before deploy is executed.

We are going to fix that soon ;).

1. Make build depends on deploy

1.1 Configure deploy to be dependent on build

Go to either the nx.json or the apps/movies/project.json file and configure the deploy target to { "dependsOn" : ["build"] }

1.2 execute deploy

Now let's execute the deploy command again.

execute deploy 
npx nx run movies:deploy

You should see that it'll execute build before it does execute deploy.

2. Explore the task graph

If you open the task graph for the movies:deploy target, you'll notice that it now has dependencies!

Run deploy task graph 
npx nx run movies:deploy --graph

3. Create other dependsOn relations

Note

The workshop is for you! So that you can get familiar with new tools. If you feel like playing around, go ahead and finish this exercise as well.

e.g. build depends on lint & test or just deploy depends on build test & lint

This task has a very abstract description: Just go ahead and configure other constraints that make sense to you. You can always validate what you did by watching the task graph!