feat: add health-checks for eck elastic beat (#16563)

* feat: add health-checks for eck elastic beat

Signed-off-by: ebuildy <ebuildy@gmail.com>

* fix tests

Signed-off-by: ebuildy <ebuildy@gmail.com>

---------

Signed-off-by: ebuildy <ebuildy@gmail.com>

resource_customizations/beat.k8s.elastic.co/Beat/health.lua

@@ -0,0 +1,31 @@
+local hs = {}
+
+if obj.status ~= nil and (obj.status.health ~= nil or obj.status.expectedNodes ~= nil) then
+  if obj.status.health == "red" then
+    hs.status = "Degraded"
+    hs.message = "Elastic Beat status is Red"
+    return hs
+  elseif obj.status.health == "green" then
+    hs.status = "Healthy"
+    hs.message = "Elastic Beat status is Green"
+    return hs
+  elseif obj.status.health == "yellow" then
+    if obj.status.availableNodes ~= nil and obj.status.expectedNodes ~= nil then
+        hs.status = "Progressing"
+        hs.message = "Elastic Beat status is deploying, there is " .. obj.status.availableNodes .. " instance(s) on " .. obj.status.expectedNodes .. " expected"
+        return hs
+    else
+        hs.status = "Progressing"
+        hs.message = "Elastic Beat phase is progressing"
+        return hs
+    end
+  elseif obj.status.health == nil then
+    hs.status = "Progressing"
+    hs.message = "Elastic Beat phase is progressing"
+    return hs
+  end
+end
+
+hs.status = "Unknown"
+hs.message = "Elastic Beat status is unknown. Ensure your ArgoCD is current and then check for/file a bug report: https://github.com/argoproj/argo-cd/issues"
+return hs

resource_customizations/beat.k8s.elastic.co/Beat/health_test.yaml

@@ -0,0 +1,29 @@
+tests:
+- healthStatus:
+    status: Healthy
+    message: "Elastic Beat status is Green"
+  inputPath: testdata/ready_green.yaml
+- healthStatus:
+    status: Progressing
+    message: "Elastic Beat phase is progressing"
+  inputPath: testdata/ready_yellow_single_node.yaml
+- healthStatus:
+    status: Progressing
+    message: "Elastic Beat status is deploying, there is 1 instance(s) on 2 expected"
+  inputPath: testdata/ready_yellow.yaml
+- healthStatus:
+    status: Progressing
+    message: "Elastic Beat phase is progressing"
+  inputPath: testdata/progressing.yaml
+- healthStatus:
+    status: Degraded
+    message: "Elastic Beat status is Red"
+  inputPath: testdata/ready_red.yaml
+- healthStatus:
+    status: Unknown
+    message: "Elastic Beat status is unknown. Ensure your ArgoCD is current and then check for/file a bug report: https://github.com/argoproj/argo-cd/issues"
+  inputPath: testdata/unknown.yaml
+- healthStatus:
+    status: Unknown
+    message: "Elastic Beat status is unknown. Ensure your ArgoCD is current and then check for/file a bug report: https://github.com/argoproj/argo-cd/issues"
+  inputPath: testdata/invalid.yaml

resource_customizations/beat.k8s.elastic.co/Beat/testdata/invalid.yaml

@@ -0,0 +1,12 @@
+apiVersion: beat.k8s.elastic.co/v1beta1
+kind: Beat
+metadata:
+  name: quickstart
+spec:
+  version: 8.8.8
+  type: metricbeat
+status:
+  expectedNodes: 1
+  health: invalid
+  observedGeneration: 1
+  version: 8.8.1

resource_customizations/beat.k8s.elastic.co/Beat/testdata/progressing.yaml

@@ -0,0 +1,11 @@
+apiVersion: beat.k8s.elastic.co/v1beta1
+kind: Beat
+metadata:
+  name: quickstart
+spec:
+  version: 8.8.8
+  type: metricbeat
+status:
+  expectedNodes: 1
+  observedGeneration: 1
+  version: 8.8.1

resource_customizations/beat.k8s.elastic.co/Beat/testdata/ready_green.yaml

@@ -0,0 +1,13 @@
+apiVersion: beat.k8s.elastic.co/v1beta1
+kind: Beat
+metadata:
+  name: quickstart
+spec:
+  version: 8.8.8
+  type: metricbeat
+status:
+  expectedNodes: 1
+  availableNodes: 1
+  health: green
+  observedGeneration: 1
+  version: 8.8.1

resource_customizations/beat.k8s.elastic.co/Beat/testdata/ready_red.yaml

@@ -0,0 +1,10 @@
+apiVersion: beat.k8s.elastic.co/v1beta1
+kind: Beat
+metadata:
+  name: quickstart
+spec:
+  version: 8.8.8
+  type: metricbeat
+status:
+  expectedNodes: 1
+  health: red

resource_customizations/beat.k8s.elastic.co/Beat/testdata/ready_yellow.yaml

@@ -0,0 +1,11 @@
+apiVersion: beat.k8s.elastic.co/v1beta1
+kind: Beat
+metadata:
+  name: quickstart
+spec:
+  version: 8.8.8
+  type: metricbeat
+status:
+  availableNodes: 1
+  expectedNodes: 2
+  health: yellow

resource_customizations/beat.k8s.elastic.co/Beat/testdata/ready_yellow_single_node.yaml

@@ -0,0 +1,10 @@
+apiVersion: beat.k8s.elastic.co/v1beta1
+kind: Beat
+metadata:
+  name: quickstart
+spec:
+  version: 8.8.8
+  type: metricbeat
+status:
+  expectedNodes: 1
+  health: yellow

resource_customizations/beat.k8s.elastic.co/Beat/testdata/unknown.yaml

@@ -0,0 +1,8 @@
+apiVersion: beat.k8s.elastic.co/v1beta1
+kind: Beat
+metadata:
+  name: quickstart
+spec:
+  version: 8.8.8
+  type: metricbeat
+status: {}