⚠️ Feature: Adding the option to pull from a private repository

[PatrickLaabs]

What this PR does / why we need it:
This PR introduces the first implementation for using a secretRef within our API to pull/clone from private repositories.

Which issue(s) this PR fixes:
Fixes #20

[PatrickLaabs]

E1017 19:22:01.296709       1 git.go:51] "Failed on retrieve the token from the tokenContent" err="ssh: no key found" controller="cdk8sappproxy" controllerGroup="addons.cluster.x-k8s.io" controllerKind="Cdk8sAppProxy" Cdk8sAppProxy="default/cdk8s-sample-app-go" namespace="default" name="cdk8s-sample-app-go" reconcileID="bfb14c49-b836-4a76-a860-42ae7ed0186d" cdk8sappproxy="default/cdk8s-sample-app-go"

[PatrickLaabs]

Skill Issue:

I1017 19:44:14.620913       1 controller.go:314] "Warning: Reconciler returned both a non-zero result and a non-nil error. The result will always be ignored if the error is non-nil and the non-nil error causes reqeueuing with exponential backoff. For more details, see: https://pkg.go.dev/sigs.k8s.io/controller-runtime/pkg/reconcile#Reconciler" controller="cdk8sappproxy" controllerGroup="addons.cluster.x-k8s.io" controllerKind="Cdk8sAppProxy" Cdk8sAppProxy="caapc-system/cdk8s-sample-app-go" namespace="caapc-system" name="cdk8s-sample-app-go" reconcileID="c735f95d-3d58-4761-936e-0c6a06d6d90a"

[PatrickLaabs]

Other git interface seem to need the authentication aswell. At least the Polling interface.
Anyway.
Was able to clone the repo with the given credentials:

I1017 20:13:38.743681       1 reflector.go:368] Caches populated for *v1.Secret from k8s.io/[email protected]/tools/cache/reflector.go:243
Enumerating objects: 848, done.
Counting objects: 100% (848/848), done.
Compressing objects: 100% (390/390), done.
Total 848 (delta 463), reused 794 (delta 453), pack-reused 0 (from 0)
E1017 20:13:56.666735       1 git.go:139] "Failed to open local repo" err="repository does not exist" controller="cdk8sappproxy" controllerGroup="addons.cluster.x-k8s.io" controllerKind="Cdk8sAppProxy" Cdk8sAppProxy="caapc-system/cdk8s-sample-app-go" namespace="caapc-system" name="cdk8s-sample-app-go" reconcileID="383005a8-b635-4bf0-94ac-2a3d5d47512d" cdk8sappproxy="caapc-system/cdk8s-sample-app-go" repo="[email protected]:PatrickLaabs/cdk8s-sample-deployment.git"

kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
/ $ ls -lah /tmp/cdk8s-caapc-system-cdk8s-sample-app-go-main/deployments/dist/
total 4K
drwxr-xr-x    2 nonroot  nonroot       38 Oct 17 20:17 .
drwxr-xr-x    4 nonroot  nonroot      106 Oct 17 20:17 ..
-rw-r--r--    1 nonroot  nonroot      374 Oct 17 20:17 getting-started.k8s.yaml

[PatrickLaabs]

Reconcile + Redeployment still active. For testing purposes, in favor of improvements, the poll interval has been removed. I'll re-work the implementation within this pr.

Overall, the implementation of pulling cdk8s deployment definition from a private repository, using a ssh token is working.

Next up:

• ✅ Setting a custom secret token, instead of hard coded 'api-token'
• ✅ Allow pulling from public and private repositories. For this, we might want a helper function, which decides which road we go.
• ✅ KnownHosts implementation
• re-implement poll interval.

[PatrickLaabs]

The Poll Interval has been removed. We should re-work the reconciler as a whole.
But this will not happen within this PR.

[PatrickLaabs]

I also commented the Git polling and Hashing implementation for now. Since we need to re-work the Poll Interval, we are save to keep this commented.

➜  ~ k get pods
NAME                                                    READY   STATUS              RESTARTS   AGE
cdk8s-public-test-deployment-c8493fce-5dcb97c5b-87fd4   0/1     ContainerCreating   0          7s
getting-started-deployment-c80c7257-76cfc4576b-c9psm    1/1     Running             0          47s

[RegWin32]

Tests looked fine, great code. LGTM