Повышаем надёжность reconcile и снижаем лишние срабатывания при обновлении

оператора.

- Возвращаем RequeueAfter, пока Deployment процессора не в стабильном Ready-состоянии,
  чтобы статус не зависел только от watch-событий.
- Ограничиваем enqueue всех DataFlow срабатываниями по существенным изменениям
  Deployment оператора (generation / spec.template), а не по каждому обновлению status.
- Логируем ошибку List при построении очереди reconcile, чтобы обновления образа
  оператора не приводили к «тихому» пропуску переката процессоров.

Tests: обновить/добавить тесты на предикат и поведение Reconcile при Pending.

Author: ilyario

api/v1/dataflow_types.go

@@ -918,6 +918,14 @@ type DataFlowStatus struct {
 	// ErrorCount is the number of errors encountered
 	// +optional
 	ErrorCount int64 `json:"errorCount,omitempty"`
+
+	// Conditions represent the latest available observations of the DataFlow state.
+	// +optional
+	// +patchMergeKey=type
+	// +patchStrategy=merge
+	// +listType=map
+	// +listMapKey=type
+	Conditions []metav1.Condition `json:"conditions,omitempty"`
 }
 
 //+kubebuilder:object:root=true

api/v1/zz_generated.deepcopy.go

@@ -1180,6 +1180,67 @@ spec:
           status:
             description: DataFlowStatus defines the observed state of DataFlow
             properties:
+              conditions:
+                description: Conditions represent the latest available observations
+                  of the DataFlow state.
+                items:
+                  description: Condition contains details for one aspect of the current
+                    state of this API Resource.
+                  properties:
+                    lastTransitionTime:
+                      description: |-
+                        lastTransitionTime is the last time the condition transitioned from one status to another.
+                        This should be when the underlying condition changed.  If that is not known, then using the time when the API field changed is acceptable.
+                      format: date-time
+                      type: string
+                    message:
+                      description: |-
+                        message is a human readable message indicating details about the transition.
+                        This may be an empty string.
+                      maxLength: 32768
+                      type: string
+                    observedGeneration:
+                      description: |-
+                        observedGeneration represents the .metadata.generation that the condition was set based upon.
+                        For instance, if .metadata.generation is currently 12, but the .status.conditions[x].observedGeneration is 9, the condition is out of date
+                        with respect to the current state of the instance.
+                      format: int64
+                      minimum: 0
+                      type: integer
+                    reason:
+                      description: |-
+                        reason contains a programmatic identifier indicating the reason for the condition's last transition.
+                        Producers of specific condition types may define expected values and meanings for this field,
+                        and whether the values are considered a guaranteed API.
+                        The value should be a CamelCase string.
+                        This field may not be empty.
+                      maxLength: 1024
+                      minLength: 1
+                      pattern: ^[A-Za-z]([A-Za-z0-9_,:]*[A-Za-z0-9_])?$
+                      type: string
+                    status:
+                      description: status of the condition, one of True, False, Unknown.
+                      enum:
+                      - "True"
+                      - "False"
+                      - Unknown
+                      type: string
+                    type:
+                      description: type of condition in CamelCase or in foo.example.com/CamelCase.
+                      maxLength: 316
+                      pattern: ^([a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*/)?(([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9])$
+                      type: string
+                  required:
+                  - lastTransitionTime
+                  - message
+                  - reason
+                  - status
+                  - type
+                  type: object
+                type: array
+                x-kubernetes-list-map-keys:
+                - type
+                x-kubernetes-list-type: map
               errorCount:
                 description: ErrorCount is the number of errors encountered
                 format: int64