add github datasource

[vmanley]

Description

Allows Operator to support GitHub datasources by creating a GrafanaDataSource.

Relevant issues/tickets

Fixes #570

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• This change requires a documentation update
• I have added tests that prove my fix is effective or that my feature works
• I have added a test case that will be used to verify my changes
• Verified independently on a cluster by reviewer

Verification steps

Verifying locally by CRC

1. Create the following resources to be applied

• Secret to install GitHub plugin

apiVersion: v1
kind: Secret
metadata:
  name: grafana-env
stringData:
  GF_INSTALL_PLUGINS: grafana-github-datasource 1.0.6
type: Opaque

• Grafana CR for GitHub plugin

apiVersion: integreatly.org/v1alpha1
kind: Grafana
metadata:
  name: example-grafana
spec:
  client:
    preferService: false
  deployment:
    envFrom:
      - secretRef:
          name: grafana-env
  ingress:
    enabled: True
  config:
    log:
      mode: "console"
      level: "warn"
    auth:
      disable_login_form: False
      disable_signout_menu: True
    auth.anonymous:
      enabled: True
  dashboardLabelSelector:
    - matchExpressions:
        - { key: app, operator: In, values: [ grafana ] }

• GitHub dashboard (using sample dashboard found here)

apiVersion: integreatly.org/v1alpha1
kind: GrafanaDashboard
metadata:
  name: github-dashboard
  labels:
    app: grafana
spec:
  json:
    ""
  url: https://raw.githubusercontent.com/grafana/github-datasource/master/src/dashboards/dashboard.json
  datasources:
    - inputName: "DS_GITHUB"
      datasourceName: GitHub
  plugins:
    - name: "grafana-github-datasource"
      version: "1.0.6"

• GitHub Datasource (this example can also be found here)

apiVersion: integreatly.org/v1alpha1
kind: GrafanaDataSource
metadata:
  name: github-grafanadatasource
spec:
  name: github-grafanadatasource.yaml
  datasources:
    - name: GitHub
      type: grafana-github-datasource
      access: proxy
      jsonData:
        githubUrl: ""
      secureJsonData:
        accessToken: <github-token>

Note: The GitHub token provided must have the following permissions:
For all repositories:

• public_repo
• repo:status
• repo_deployment
• read:packages
• user:read
• user:email

An extra setting is required for private repositories

• repo (Full control of private repositories)

2. Run the Operator locally using this branch.
3. Apply the resources to a namespace.
4. WIth CRC, a Grafana route should be created. Open the route location to open Grafana UI.
5. Navigate to the dashboard titled GitHub Default (Found under Dashboards/Manage in the side bar)
6. Dashboard should display data from https://github.com/grafana/grafana by default. Different repos can be chosen by editting the Organization and Repository fields in the UI.

[HVBE]

Trying to verify, it might take a while since I forgot my GitHub password, so I successfully prevented myself from generating a new access key :), looks great so far though! thanks @vmanley

[HVBE]

LGTM, thanks for addressing this @vmanley, works great 👍