Indicate fetch errors on sources

As a user, I want to quickly tell whether there’s problems fetching from some source, and quickly see what the error message is.

Sources may run into problems trying to connect or fetch revisions. Following VS Code Extension guidelines, provide a quick visual cue to users if a source has entered a problem state, and allow the user quick access to see the error message (again following extension best practices, whether tooltip or otherwise.

A source will be in a problem state when the attribute status.conditions[0].status is False and the information required to be shown for error message is status.conditions[0].message and status.conditions[0].reason

Please refer to #40 for details on how to query for the payload below.

kubectl get gitrepository sample-k8s-not -o yaml
apiVersion: source.toolkit.fluxcd.io/v1beta1
kind: GitRepository
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: |
      {"apiVersion":"source.toolkit.fluxcd.io/v1beta1","kind":"GitRepository","metadata":{"annotations":{},"name":"sample-k8s-not","namespace":"default"},"spec":{"interval":"1m","ref":{"branch":"main"},"url":"https://github.com/murillodigital/sample-k8s-not"}}
  creationTimestamp: "2021-08-31T20:03:41Z"
  finalizers:
  - finalizers.fluxcd.io
  generation: 2
  name: sample-k8s-not
  namespace: default
  resourceVersion: "1318400"
  uid: 7b5c3be3-6028-4af0-86ec-70eecc76720e
spec:
  gitImplementation: go-git
  interval: 1m0s
  ref:
    branch: main
  timeout: 20s
  url: https://github.com/murillodigital/sample-k8s-not
status:
  conditions:
  - lastTransitionTime: "2021-08-31T20:03:52Z"
    message: 'unable to clone ''https://github.com/murillodigital/sample-k8s-not'',
      error: authentication required'
    reason: GitOperationFailed
    status: "False"
    type: Ready
  observedGeneration: 2

[usernamehw]

Sources show error status now:

If you want them to have other icons in the future we can use emoji ❌

[murillodigital]

For reference, here’s a few examples on Flux’s documentation as to how these status may look:

https://fluxcd.io/docs/components/source/gitrepositories/#status-examples https://fluxcd.io/docs/components/source/helmrepositories/#status-examples https://fluxcd.io/docs/components/source/buckets/#status-examples

Note that the data will vary but structure will be identical, there will always be a single condition (always grab status.conditions[0]) - the information in this object is what a user will find most valuable during troubleshooting a failed reconciliation.