Feature Request: support for dependencies downloading

[woj-tek]

Is your feature request related to a problem?

Yes, I have a chart that has dependencies and currently it's not possible to install.

Solution you'd like

Rancher should automatically install dependencies. helm install documentation mentions --dependency-update option which should solve the issue without having to deal with dependency update or dependency build (as mentioned in the docs: https://ranchermanager.docs.rancher.com/v2.7/how-to-guides/new-user-guides/deploy-apps-across-clusters/fleet#helm-chart-dependencies)

Alternatives you've considered

One could put the chart tgz file in the repo, but it's not really feasible for external charts/repositories...

Anything else?

There is #250 but it was closed as "solved" (by adding documentation blurb that it doesn't work, which well... doesn't solve anything...)

[sbulage]

@0xavi0 QA Template is missing, can you please add it, Thanks 😄

[0xavi0]

QA Template

Solution

Changed fleet to download dependencies found in helm charts by default.
Added a new option helm.disableDependencyUpdate to disable the feature.
Refer to rancher/fleet-docs#131

Testing

Repository with helm chart and disableDependencyUpdate not set

Add a new gitrepo using the following:

apiVersion: fleet.cattle.io/v1alpha1
kind: GitRepo
metadata:
  name: sample-deps-simple
  namespace: fleet-local
spec:
  repo: "https://github.com/0xavi0/fleet-examples"
  branch: test-dependencies
  paths:
  - single-cluster/helm-dependencies/deps-simple

This will install the typical sample application from fleet-examples, but will also deploy a postgresql pod as it is stated as a dependency here

Same as above but with disableDependencyUpdate set

apiVersion: fleet.cattle.io/v1alpha1
kind: GitRepo
metadata:
  name: sample-no-deps-simple
  namespace: fleet-local
spec:
  repo: "https://github.com/0xavi0/fleet-examples"
  branch: test-dependencies
  paths:
  - single-cluster/helm-dependencies/no-deps-simple

In this case the sample application should be deployed but not the postgresql dependency as disableDependencyUpdate is true and fleet won't download dependencies.

Additional info

[sbulage]

System Information

• Rancher version: v2.9-3e5ca3f58fef0987812eb95d028390d80c44a6e3-head
• Fleet Version: 104.0.0+up0.10.0-rc.13

---

TEST RESULT

Scenarios

Scenario	Test Case	Result	QASE ID added
1	Test dependency should not downloaded along with the application when disableDependencyUpdate is set to true in fleet.yaml	✅	☑️
2	Test dependency should downloaded along with the application when disableDependencyUpdate is set to false in fleet.yaml	✅	☑️