feat: Introduce a new CR for managing Notifications Configuration (#1264

)

* feat: Introduce Notifications Configuration CR for managing argocd-notifications-cm

Signed-off-by: iam-veeramalla <abhishek.veeramalla@gmail.com>

* fix: failing tests

Signed-off-by: iam-veeramalla <abhishek.veeramalla@gmail.com>

* fix: linting issues

Signed-off-by: iam-veeramalla <abhishek.veeramalla@gmail.com>

* feat: add docs and optimize code

Signed-off-by: iam-veeramalla <abhishek.veeramalla@gmail.com>

* fix: address review comments

Signed-off-by: iam-veeramalla <abhishek.veeramalla@gmail.com>

* fix: documentation and test issues

Signed-off-by: iam-veeramalla <abhishek.veeramalla@gmail.com>

* feat: add olm related configuration such as rbac

Signed-off-by: iam-veeramalla <abhishek.veeramalla@gmail.com>

---------

Signed-off-by: iam-veeramalla <abhishek.veeramalla@gmail.com>

api/v1alpha1/notificationsconfiguration_types.go

@@ -0,0 +1,60 @@
+/*
+Copyright 2021.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha1
+
+import metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+func init() {
+	SchemeBuilder.Register(&NotificationsConfiguration{}, &NotificationsConfigurationList{})
+}
+
+//+kubebuilder:object:root=true
+
+// NotificationsConfiguration is the Schema for the NotificationsConfiguration API
+// +k8s:openapi-gen=true
+// +kubebuilder:subresource:status
+// +operator-sdk:csv:customresourcedefinitions:resources={{NotificationsConfiguration,v1beta1,""}}
+// +operator-sdk:csv:customresourcedefinitions:resources={{ConfigMap,v1,""}}
+type NotificationsConfiguration struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec NotificationsConfigurationSpec `json:"spec,omitempty"`
+}
+
+//+kubebuilder:object:root=true
+
+// NotificationsConfigurationList contains a list of NotificationsConfiguration
+type NotificationsConfigurationList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []NotificationsConfiguration `json:"items"`
+}
+
+// NotificationsConfigurationSpec allows users to define the triggers, templates, services, context and
+// subscriptions for the notifications
+type NotificationsConfigurationSpec struct {
+	// Triggers define the condition when the notification should be sent and list of templates required to generate the message
+	// Recipients can subscribe to the trigger and specify the required message template and destination notification service.
+	Triggers map[string]string `json:"triggers,omitempty"`
+	// Templates are used to generate the notification template message
+	Templates map[string]string `json:"templates,omitempty"`
+	// Services are used to deliver message
+	Services map[string]string `json:"services,omitempty"`
+	// Subscriptions contain centrally managed global application subscriptions
+	Subscriptions map[string]string `json:"subscriptions,omitempty"`
+}