feat: add thanos querier CRD (#52)

Signed-off-by: Jan Fajerski <jfajersk@redhat.com>

deploy/crds/common/monitoring.rhobs_thanosqueriers.yaml

@@ -0,0 +1,123 @@
+
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.7.0
+  creationTimestamp: null
+  name: thanosqueriers.monitoring.rhobs
+spec:
+  group: monitoring.rhobs
+  names:
+    kind: ThanosQuerier
+    listKind: ThanosQuerierList
+    plural: thanosqueriers
+    singular: thanosquerier
+  scope: Namespaced
+  versions:
+  - name: v1alpha1
+    schema:
+      openAPIV3Schema:
+        description: ThanosQuerier outlines the Thanos querier components, managed
+          by this stack
+        properties:
+          apiVersion:
+            description: 'APIVersion defines the versioned schema of this representation
+              of an object. Servers should convert recognized schemas to the latest
+              internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
+            type: string
+          kind:
+            description: 'Kind is a string value representing the REST resource this
+              object represents. Servers may infer this from the endpoint the client
+              submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
+            type: string
+          metadata:
+            type: object
+          spec:
+            description: ThanosQuerierSpec defines a single Thanos Querier instance.
+              This means a label selector by which Monitoring Stack instances to query
+              are selected, and an optional namespace selector and a list of replica
+              labels by which to deduplicate.
+            properties:
+              namespaceSelector:
+                description: Selector to select which namespaces the Monitoring Stack
+                  objects are discovered from.
+                properties:
+                  any:
+                    description: Boolean describing whether all namespaces are selected
+                      in contrast to a list restricting them.
+                    type: boolean
+                  matchNames:
+                    description: List of namespace names.
+                    items:
+                      type: string
+                    type: array
+                type: object
+              replicaLabels:
+                items:
+                  type: string
+                type: array
+              selector:
+                description: Selector to select Monitoring stacks to unify
+                properties:
+                  matchExpressions:
+                    description: matchExpressions is a list of label selector requirements.
+                      The requirements are ANDed.
+                    items:
+                      description: A label selector requirement is a selector that
+                        contains values, a key, and an operator that relates the key
+                        and values.
+                      properties:
+                        key:
+                          description: key is the label key that the selector applies
+                            to.
+                          type: string
+                        operator:
+                          description: operator represents a key's relationship to
+                            a set of values. Valid operators are In, NotIn, Exists
+                            and DoesNotExist.
+                          type: string
+                        values:
+                          description: values is an array of string values. If the
+                            operator is In or NotIn, the values array must be non-empty.
+                            If the operator is Exists or DoesNotExist, the values
+                            array must be empty. This array is replaced during a strategic
+                            merge patch.
+                          items:
+                            type: string
+                          type: array
+                      required:
+                      - key
+                      - operator
+                      type: object
+                    type: array
+                  matchLabels:
+                    additionalProperties:
+                      type: string
+                    description: matchLabels is a map of {key,value} pairs. A single
+                      {key,value} in the matchLabels map is equivalent to an element
+                      of matchExpressions, whose key field is "key", the operator
+                      is "In", and the values array contains only "value". The requirements
+                      are ANDed.
+                    type: object
+                type: object
+            required:
+            - selector
+            type: object
+          status:
+            description: ThanosQuerierStatus defines the observed state of ThanosQuerier.
+              It should always be reconstructable from the state of the cluster and/or
+              outside world.
+            type: object
+        type: object
+    served: true
+    storage: true
+    subresources:
+      status: {}
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []

pkg/apis/v1alpha1/types.go

@@ -75,3 +75,52 @@ type MonitoringStackStatus struct {
 	// TODO(sthaha): INSERT ADDITIONAL STATUS FIELDS -- observed state of prometheus
 	// ??
 }
+
+// NamespaceSelector is a selector for selecting either all namespaces or a
+// list of namespaces.
+// +k8s:openapi-gen=true
+type NamespaceSelector struct {
+	// Boolean describing whether all namespaces are selected in contrast to a
+	// list restricting them.
+	Any bool `json:"any,omitempty"`
+	// List of namespace names.
+	MatchNames []string `json:"matchNames,omitempty"`
+}
+
+// ThanosQuerier outlines the Thanos querier components, managed by this stack
+// +k8s:openapi-gen=true
+// +kubebuilder:resource
+// +kubebuilder:subresource:status
+type ThanosQuerier struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec   ThanosQuerierSpec   `json:"spec,omitempty"`
+	Status ThanosQuerierStatus `json:"status,omitempty"`
+}
+
+// ThanosQuerierList contains a list of ThanosQuerier
+// +kubebuilder:resource
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+type ThanosQuerierList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []ThanosQuerier `json:"items"`
+}
+
+// ThanosQuerierSpec defines a single Thanos Querier instance. This means a
+// label selector by which Monitoring Stack instances to query are selected, and
+// an optional namespace selector and a list of replica labels by which to
+// deduplicate.
+type ThanosQuerierSpec struct {
+	// Selector to select Monitoring stacks to unify
+	Selector metav1.LabelSelector `json:"selector"`
+	// Selector to select which namespaces the Monitoring Stack objects are discovered from.
+	NamespaceSelector NamespaceSelector `json:"namespaceSelector,omitempty"`
+	ReplicaLabels     []string          `json:"replicaLabels,omitempty"`
+}
+
+// ThanosQuerierStatus defines the observed state of ThanosQuerier.
+// It should always be reconstructable from the state of the cluster and/or outside world.
+type ThanosQuerierStatus struct {
+}