feat: add storage deletion workflow with conditional execution

components/nova/values.yaml

@@ -93,6 +93,10 @@ conf:
     uwsgi:
       processes: 2
 
+    # Enable oslo.messaging notifications for Argo Events integration
+    oslo_messaging_notifications:
+      driver: messagingv2
+
 console:
   # we are working with baremetal nodes and not QEMU so we don't need novnc or spice
   # connected to QEMU

components/site-workflows/eventsources/eventsource-openstack-nova.yaml

@@ -0,0 +1,44 @@
+apiVersion: argoproj.io/v1alpha1
+kind: EventSource
+metadata:
+  name: openstack-nova
+spec:
+  amqp:
+    # this is our eventName
+    notifications:
+      # amqp server url
+      url: amqp://rabbitmq-server-0.rabbitmq-nodes.openstack.svc.cluster.local:5672/nova
+      # jsonBody specifies that all event body payload coming from this
+      # source will be JSON
+      jsonBody: true
+      # name of the exchange.
+      exchangeName: nova
+      exchangeType: topic
+      exchangeDeclare:
+        durable: true
+      # routing key for messages within the exchange
+      routingKey: 'notifications.info'
+      # queue settings, if not provided defaults are used
+      queueDeclare:
+        name: argo_notifications
+        durable: true
+        exclusive: false
+        autoDelete: false
+        noWait: true
+
+      # optional consume settings
+      # if not provided, default values will be used
+      consume:
+        consumerTag: "argo-events"
+        autoAck: true
+        exclusive: false
+        noLocal: false
+      # username and password for authentication
+      # use secret selectors
+      auth:
+        username:
+          name: argo-nova-user-credentials
+          key: username
+        password:
+          name: argo-nova-user-credentials
+          key: password

components/site-workflows/eventsources/rabbitmq-user-argo-nova.yaml

@@ -0,0 +1,25 @@
+---
+apiVersion: rabbitmq.com/v1beta1
+kind: User
+metadata:
+  name: argo-nova
+spec:
+  rabbitmqClusterReference:
+    name: rabbitmq  # rabbitmqCluster must exist in the same namespace as this resource
+    namespace: openstack
+---
+apiVersion: rabbitmq.com/v1beta1
+kind: Permission
+metadata:
+  name: argo-nova
+spec:
+  vhost: "nova"
+  userReference:
+    name: "argo-nova"  # name of a user.rabbitmq.com in the same namespace; must specify either spec.userReference or spec.user
+  permissions:
+    write: ".*"
+    configure: ".*"
+    read: ".*"
+  rabbitmqClusterReference:
+    name: rabbitmq  # rabbitmqCluster must exist in the same namespace as this resource
+    namespace: openstack

components/site-workflows/kustomization.yaml

@@ -5,9 +5,11 @@ resources:
   - eventbus/eventbus-default.yaml
   - eventbus/poddisruptionbudget-eventbus-default-pdb.yaml
   - eventsources/eventsource-openstack-ironic.yaml
+  - eventsources/eventsource-openstack-nova.yaml
   - eventsources/eventsource-openstack-keystone.yaml
   - eventsources/eventsource-openstack-neutron.yaml
   - eventsources/rabbitmq-user-argo-ironic.yaml
+  - eventsources/rabbitmq-user-argo-nova.yaml
   - eventsources/rabbitmq-user-argo-keystone.yaml
   - eventsources/rabbitmq-user-argo-neutron.yaml
   - eventsources/eventsource-k8s-openstack-secrets.yaml
@@ -26,6 +28,7 @@ resources:
   - sensors/sensor-ironic-oslo-event.yaml
   # CronWorkflows
   - cronworkflows/resync-ironic-nautobot.yaml
+  - sensors/sensor-nova-oslo-event.yaml
 
 helmCharts:
   - name: nautobot-token

components/site-workflows/sensors/sensor-nova-oslo-event.yaml

@@ -0,0 +1,102 @@
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Sensor
+metadata:
+  name: nova-oslo-event
+  annotations:
+    workflows.argoproj.io/title: Process oslo_events for nova compute
+    workflows.argoproj.io/description: |+
+      Triggers on the following Nova Events:
+
+      - compute.instance.delete.end which happens when a server is deleted
+        AND the server has metadata.storage == "wanted"
+
+      This sensor uses data filters to check the storage metadata and directly
+      triggers the ansible playbook without requiring a Python handler.
+
+      The sensor extracts the following parameters from the event:
+      - device_id: from payload.node (the Baremetal Node ID)
+      - project_id: from payload.tenant_id (UUID without dashes)
+
+      These are passed directly to the storage_on_server_delete.yml ansible playbook.
+
+      Defined in `components/site-workflows/sensors/sensor-nova-oslo-event.yaml`
+spec:
+  dependencies:
+    - eventName: notifications
+      eventSourceName: openstack-nova
+      name: nova-dep
+      transform:
+        # the event is a string-ified JSON so we need to decode it
+        # replace the whole event body and add a storage_wanted flag
+        jq: |
+          .body = (.body["oslo.message"] | fromjson) |
+          .body.storage_wanted = (.body.payload.metadata.storage // "none")
+      filters:
+        # applies each of the items in data with 'and'
+        dataLogicalOperator: "and"
+        data:
+          - path: "body.event_type"
+            type: "string"
+            value:
+              - "compute.instance.delete.end"
+          # Only process if storage was wanted
+          - path: "body.storage_wanted"
+            type: "string"
+            value:
+              - "wanted"
+  template:
+    serviceAccountName: sensor-submit-workflow
+  triggers:
+    - template:
+        name: nova-instance-delete
+        k8s:
+          operation: create
+          parameters:
+            - dest: spec.arguments.parameters.0.value
+              src:
+                dataKey: body.payload.node
+                dependencyName: nova-dep
+            - dest: spec.arguments.parameters.1.value
+              src:
+                dataKey: body.payload.tenant_id
+                dependencyName: nova-dep
+          source:
+            # create a workflow in argo-events prefixed with nova-delete-
+            resource:
+              apiVersion: argoproj.io/v1alpha1
+              kind: Workflow
+              metadata:
+                generateName: nova-delete-
+                namespace: argo-events
+              spec:
+                serviceAccountName: workflow
+                entrypoint: main
+                # defines the parameters extracted from the event
+                arguments:
+                  parameters:
+                    - name: device_id
+                    - name: project_id
+                templates:
+                - name: main
+                  steps:
+                  - - name: ansible-delete-server-storage
+                      templateRef:
+                        name: ansible-workflow-template
+                        template: ansible-run
+                      arguments:
+                        parameters:
+                        - name: playbook
+                          value: storage_on_server_delete.yml
+                        - name: extra_vars
+                          value: device_id={{workflow.parameters.device_id}} project_id={{workflow.parameters.project_id}}
+                  - - name: ansible-update-switches
+                      templateRef:
+                        name: ansible-workflow-template
+                        template: ansible-run
+                      arguments:
+                        parameters:
+                        - name: playbook
+                          value: storage_update_switches.yml
+                        - name: extra_vars
+                          value: plan_mode=remediation