add health check probe metric test

Signed-off-by: Phil Brookes <[email protected]>

Author: philbrookes

config/examples/kube-prometheus/bundle.yaml

@@ -1739,6 +1739,25 @@ data:
                 labelsFromPath:
                   type: ["type"]
                 valueFrom: ["status"]
+        - groupVersionKind:
+            group: kuadrant.io
+            kind: "DNSHealthCheckProbe"
+            version: "v1alpha1"
+          metricNamePrefix: kuadrant_dnshealthcheckprobe
+          labelsFromPath:
+            name:
+            - metadata
+            - name
+            namespace:
+            - metadata
+            - namespace
+          metrics:
+          - name: "healthy_status"
+            help: "DNS Probe current status"
+            each:
+              type: Gauge
+              gauge:
+                path: [status, healthy]
 kind: ConfigMap
 metadata:
   name: custom-resource-state

config/kuadrant/crd/kuadrant.io_dnshealthcheckprobes.yaml

@@ -0,0 +1,124 @@
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.14.0
+  name: dnshealthcheckprobes.kuadrant.io
+spec:
+  group: kuadrant.io
+  names:
+    kind: DNSHealthCheckProbe
+    listKind: DNSHealthCheckProbeList
+    plural: dnshealthcheckprobes
+    singular: dnshealthcheckprobe
+  scope: Namespaced
+  versions:
+  - additionalPrinterColumns:
+    - description: DNSHealthCheckProbe healthy.
+      jsonPath: .status.healthy
+      name: Healthy
+      type: boolean
+    name: v1alpha1
+    schema:
+      openAPIV3Schema:
+        description: DNSHealthCheckProbe is the Schema for the dnshealthcheckprobes
+          API
+        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: DNSHealthCheckProbeSpec defines the desired state of DNSHealthCheckProbe
+            properties:
+              additionalHeadersRef:
+                description: |-
+                  AdditionalHeadersRef refers to a secret that contains extra headers to send in the probe request, this is primarily useful if an authentication
+                  token is required by the endpoint.
+                properties:
+                  name:
+                    type: string
+                required:
+                - name
+                type: object
+              address:
+                description: Address to connect to the host on (IP Address (A Record)
+                  or hostname (CNAME)).
+                type: string
+              allowInsecureCertificate:
+                description: |-
+                  AllowInsecureCertificate will instruct the health check probe to not fail on a self-signed or otherwise invalid SSL certificate
+                  this is primarily used in development or testing environments and is set by the --insecure-health-checks flag
+                type: boolean
+              failureThreshold:
+                description: FailureThreshold is a limit of consecutive failures that
+                  must occur for a host to be considered unhealthy
+                type: integer
+                x-kubernetes-validations:
+                - message: Failure threshold must be greater than 0
+                  rule: self > 0
+              hostname:
+                description: |-
+                  Hostname is the value sent in the host header, to route the request to the correct service
+                  Represents a root host of the parent DNS Record.
+                type: string
+              interval:
+                description: Interval defines how frequently this probe should execute
+                type: string
+              path:
+                description: |-
+                  Path is the path to append to the host to reach the expected health check.
+                  Must start with "?" or "/", contain only valid URL characters and end with alphanumeric char or "/". For example "/" or "/healthz" are common
+                pattern: ^(?:\?|\/)[\w\-.~:\/?#\[\]@!$&'()*+,;=]+(?:[a-zA-Z0-9]|\/){1}$
+                type: string
+              port:
+                description: Port to connect to the host on. Must be either 80, 443
+                  or 1024-49151
+                type: integer
+                x-kubernetes-validations:
+                - message: Only ports 80, 443, 1024-49151 are allowed
+                  rule: self in [80, 443] || (self >= 1024 && self <= 49151)
+              protocol:
+                description: Protocol to use when connecting to the host, valid values
+                  are "HTTP" or "HTTPS"
+                type: string
+                x-kubernetes-validations:
+                - message: Only HTTP or HTTPS protocols are allowed
+                  rule: self in ['HTTP','HTTPS']
+            type: object
+          status:
+            description: DNSHealthCheckProbeStatus defines the observed state of DNSHealthCheckProbe
+            properties:
+              consecutiveFailures:
+                type: integer
+              healthy:
+                type: boolean
+              observedGeneration:
+                format: int64
+                type: integer
+              reason:
+                type: string
+              status:
+                type: integer
+            required:
+            - healthy
+            type: object
+        type: object
+    served: true
+    storage: true
+    subresources:
+      status: {}

tests/e2e/main_test.go

@@ -118,6 +118,7 @@ func TestKuadrantMetricsAvailable(t *testing.T) {
 		kuadrantMetrics[params[1]] = append(kuadrantMetrics[params[1]], params)
 	}
 	testDNSRecord(t, kuadrantMetrics)
+	testDNSHealthCheckProbe(t, kuadrantMetrics)
 }
 
 func testGatewayClasses(t *testing.T, metrics map[string][][]string) {
@@ -742,6 +743,12 @@ func testDNSRecord(t *testing.T, metrics map[string][][]string) {
 	}
 }
 
+func testDNSHealthCheckProbe(t *testing.T, metrics map[string][][]string) {
+	probeHealthyMetric := metrics["kuadrant_dnshealthcheckprobe_healthy_status"]
+	probeHealthyMetric1 := probeHealthyMetric[0]
+	expectEqual(t, probeHealthyMetric1[3], "1", "kuadrant_dnshealthcheckprobe_healthy_status__1 value")
+}
+
 func parseLabels(labelsRaw string) map[string]string {
 	// simple label parsing assuming no special chars/escaping
 	// fmt.Printf("labelsRaw=%s\n", labelsRaw)

tests/manifests/testdnshealthcheckprobe.yaml

@@ -0,0 +1,20 @@
+apiVersion: kuadrant.io/v1alpha1
+kind: DNSHealthCheckProbe
+metadata:
+  labels:
+    kuadrant.io/health-probes-owner: testdnsrecord1
+  name: testdnsrecord1-172.32.200.19
+  namespace: default
+spec:
+  address: 172.32.200.19
+  allowInsecureCertificate: false
+  failureThreshold: 3
+  hostname: eu.klb.test.cb.hcpapps.net
+  interval: 30s
+  path: /healthz
+  port: 80
+  protocol: HTTP
+status:
+  healthy: true
+  observedGeneration: 1
+  status: 200