[COMMON][ROLES] Create default roles once

Instead of creating all roles every time with service account chart,
let's just create the specific ones for a chart and point to default one
for the three default roles.
In order to lighten serviceAccount chart, whole logic for default role
creation is in `roles-wrapper`.

Issue-ID: OOM-2729
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: Ib4d6a2669ca7d747320a4bccb65aac863eb60956

4 files changed, 29 insertions, 84 deletions

diff --git a/kubernetes/common/serviceAccount/templates/role-binding.yaml b/kubernetes/common/serviceAccount/templates/role-binding.yaml
index 2082f8466b..7c272aecda 100644
--- a/kubernetes/common/serviceAccount/templates/role-binding.yaml
+++ b/kubernetes/common/serviceAccount/templates/role-binding.yaml
@@ -16,18 +16,24 @@
 
 {{- $dot := . -}}
 {{- range $role_type := $dot.Values.roles }}
+{{/* retrieve the names for generic roles */}}
+{{ $name := printf "%s-%s" (include "common.release" $dot) $role_type }}
+{{- if not (has $role_type $dot.Values.defaultRoles) }}
+{{ $name = include "common.fullname" (dict "suffix" $role_type "dot" $dot ) }}
+{{- end }}
 ---
 apiVersion: rbac.authorization.k8s.io/v1
 # This cluster role binding allows anyone in the "manager" group to read secrets in any namespace.
 kind: RoleBinding
 metadata:
-  name: {{ include "common.fullname" (dict "suffix" $role_type "dot" $dot )}}
+  name: {{ include "common.fullname" (dict "suffix" $role_type "dot" $dot ) }}
   namespace: {{ include "common.namespace" $dot }}
 subjects:
 - kind: ServiceAccount
-  name: {{ include "common.fullname" (dict "suffix" $role_type "dot" $dot )}}
+  name: {{ include "common.fullname" (dict "suffix" $role_type "dot" $dot ) }}
 roleRef:
   kind: Role
-  name: {{ include "common.fullname" (dict "suffix" $role_type "dot" $dot )}}
+  name: {{ $name }}
   apiGroup: rbac.authorization.k8s.io
 {{- end }}
+
diff --git a/kubernetes/common/serviceAccount/templates/role.yaml b/kubernetes/common/serviceAccount/templates/role.yaml
index 6d12164938..2055885f2a 100644
--- a/kubernetes/common/serviceAccount/templates/role.yaml
+++ b/kubernetes/common/serviceAccount/templates/role.yaml
@@ -14,96 +14,28 @@
 # limitations under the License.
 */}}
 
-{{-   $dot := . -}}
+{{- $dot := . -}}
 {{- range $role_type := $dot.Values.roles }}
+{{/* Default roles are already created, just creating specific ones */}}
+{{-   if not (has $role_type $dot.Values.defaultRoles) }}
 ---
 apiVersion: rbac.authorization.k8s.io/v1
 kind: Role
 metadata:
-  name: {{ include "common.fullname" (dict "suffix" $role_type "dot" $dot )}}
+  name: {{ include "common.fullname" (dict "suffix" $role_type "dot" $dot ) }}
   namespace: {{ include "common.namespace" $dot }}
 rules:
-{{- if eq $role_type "read" }}
-- apiGroups:
-  - "" # "" indicates the core API group
-  - apps
-  - batch
-  - extensions
-  resources:
-  - pods
-  - deployments
-  - jobs
-  - jobs/status
-  - statefulsets
-  - replicasets
-  - replicasets/status
-  - daemonsets
-  verbs:
-  - get
-  - watch
-  - list
-{{- else  }}
-{{-   if eq $role_type "create" }}
-- apiGroups:
-  - "" # "" indicates the core API group
-  - apps
-  - batch
-  - extensions
-  resources:
-  - pods
-  - deployments
-  - jobs
-  - jobs/status
-  - statefulsets
-  - replicasets
-  - replicasets/status
-  - daemonsets
-  - secrets
-  verbs:
-  - get
-  - watch
-  - list
-- apiGroups:
-  - "" # "" indicates the core API group
-  - apps
-  resources:
-  - statefulsets
-  verbs:
-  - patch
-- apiGroups:
-  - "" # "" indicates the core API group
-  - apps
-  resources:
-  - deployments
-  - secrets
-  verbs:
-  - create
-- apiGroups:
-  - "" # "" indicates the core API group
-  - apps
-  resources:
-  - pods
-  - persistentvolumeclaims
-  - secrets
-  - deployment
-  verbs:
-  - delete
+{{-     if hasKey $dot.Values.new_roles_definitions $role_type  }}
+{{ include "common.tplValue" ( dict "value" (index $dot.Values.new_roles_definitions $role_type ) "context" $dot) }}
+{{-     else}}
+# if no rules are provided, you're back to 'nothing' role
 - apiGroups:
-  - "" # "" indicates the core API group
-  - apps
+  - authorization.k8s.io
   resources:
-  - pods/exec
+  - selfsubjectaccessreviews
+  - selfsubjectrulesreviews
   verbs:
   - create
-{{-   else }}
-{{-     if hasKey $dot.Values.new_roles_definitions $role_type  }}
-{{ include "common.tplValue" ( dict "value" (index $dot.Values.new_roles_definitions $role_type ) "context" $dot) }}
-{{-     else}}
-# if you don't match read or create, then you're not allowed to use API
-- apiGroups: []
-  resources: []
-  verbs: []
 {{-     end }}
 {{-   end }}
 {{- end }}
-{{- end }}
diff --git a/kubernetes/common/serviceAccount/templates/service-account.yaml b/kubernetes/common/serviceAccount/templates/service-account.yaml
index 449bea684c..20bd94f49a 100644
--- a/kubernetes/common/serviceAccount/templates/service-account.yaml
+++ b/kubernetes/common/serviceAccount/templates/service-account.yaml
@@ -20,5 +20,5 @@
 apiVersion: v1
 kind: ServiceAccount
 metadata:
-  name: {{ include "common.fullname" (dict "suffix" $role_type "dot" $dot )}}
-{{- end }}
+  name: {{ include "common.fullname" (dict "suffix" $role_type "dot" $dot ) }}
+{{- end }}
\ No newline at end of file
diff --git a/kubernetes/common/serviceAccount/values.yaml b/kubernetes/common/serviceAccount/values.yaml
index afa819421c..22faeb6904 100644
--- a/kubernetes/common/serviceAccount/values.yaml
+++ b/kubernetes/common/serviceAccount/values.yaml
@@ -12,11 +12,18 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# Default roles will be created by roles wrapper
+# It won't work if roles wrapper is disabled.
 roles:
   - nothing
 # - read
 # - create
 
+defaultRoles:
+  - nothing
+  - read
+  - create
+
 new_roles_definitions: {}
 #  few-read:
 #    - apiGroups: