feat: implement keda health-checks (#16715)

Signed-off-by: parmou <parveshmourya96@gmail.com>
Co-authored-by: Blake Pettersson <blake.pettersson@gmail.com>

resource_customizations/keda.sh/ScaledObject/health.lua

@@ -0,0 +1,35 @@
+local hs = {}
+local healthy = false
+local degraded = false
+local suspended = false
+if obj.status ~= nil then
+  if obj.status.conditions ~= nil then
+    for i, condition in ipairs(obj.status.conditions) do
+      if condition.status == "False" and condition.type == "Ready" then
+        hs.message = condition.message
+        degraded = true
+      end
+      if condition.status == "True" and condition.type == "Ready" then
+        hs.message = condition.message
+        healthy = true
+      end
+      if condition.status == "True" and condition.type == "Paused" then
+        hs.message = condition.message
+        suspended = true
+      end
+    end
+  end
+end
+if degraded == true then
+  hs.status = "Degraded"
+  return hs
+elseif healthy == true and suspended == false then
+  hs.status = "Healthy"
+  return hs 
+elseif healthy == true and suspended == true then
+  hs.status = "Suspended"
+  return hs
+end
+hs.status = "Progressing"
+hs.message = "Creating HorizontalPodAutoscaler Object"
+return hs

resource_customizations/keda.sh/ScaledObject/health_test.yaml

@@ -0,0 +1,21 @@
+tests:
+- healthStatus:
+    status: Progressing
+    message: "Creating HorizontalPodAutoscaler Object"
+  inputPath: testdata/keda-progressing.yaml
+- healthStatus:
+    status: Degraded
+    message: "ScaledObject doesn't have correct Idle/Min/Max Replica Counts specification"
+  inputPath: testdata/keda-degraded-1.yaml
+- healthStatus:
+    status: Degraded
+    message: "ScaledObject doesn't have correct triggers specification"
+  inputPath: testdata/keda-degraded.yaml
+- healthStatus:
+    status: Healthy
+    message: "ScaledObject is defined correctly and is ready for scaling"
+  inputPath: testdata/keda-healthy.yaml
+- healthStatus:
+    status: Suspended
+    message: "ScaledObject is paused"
+  inputPath: testdata/keda-suspended.yaml

resource_customizations/keda.sh/ScaledObject/testdata/keda-degraded-1.yaml

@@ -0,0 +1,52 @@
+apiVersion: keda.sh/v1alpha1
+kind: ScaledObject
+metadata:
+  annotations:
+  finalizers:
+    - finalizer.keda.sh
+  labels:
+    argocd.argoproj.io/instance: keda-default
+  name: keda
+  namespace: keda
+  resourceVersion: '160591442'
+  uid: 73ee438a-f383-43f3-9346-b901d9773f4b
+spec:
+  maxReplicaCount: 3
+  minReplicaCount: 0
+  scaleTargetRef:
+    name: keda
+  triggers:
+    - metadata:
+        desiredReplicas: '1'
+        end: 00 17 * * 1-5
+        start: 00 08 * * 1-5
+        timezone: Europe/Stockholm
+      type: cron
+status:
+  conditions:
+    - message: >-
+        ScaledObject doesn't have correct Idle/Min/Max Replica Counts specification
+      reason: ScaledObjectCheckFailed
+      status: 'False'
+      type: Ready
+    - message: ScaledObject check failed
+      reason: UnknownState
+      status: Unknown
+      type: Active
+    - message: No fallbacks are active on this scaled object
+      reason: NoFallbackFound
+      status: 'False'
+      type: Fallback
+    - status: Unknown
+      type: Paused
+  externalMetricNames:
+    - s0-cron-Europe-Stockholm-0008xx1-5-0019xx1-5
+  hpaName: keda-hpa
+  lastActiveTime: '2023-12-18T17:59:55Z'
+  originalReplicaCount: 1
+  scaleTargetGVKR:
+    group: apps
+    kind: Deployment
+    resource: deployments
+    version: v1
+  scaleTargetKind: apps/v1.Deployment

resource_customizations/keda.sh/ScaledObject/testdata/keda-degraded.yaml

@@ -0,0 +1,51 @@
+apiVersion: keda.sh/v1alpha1
+kind: ScaledObject
+metadata:
+  annotations:
+  finalizers:
+    - finalizer.keda.sh
+  labels:
+    argocd.argoproj.io/instance: keda-default
+  name: keda
+  namespace: keda
+  resourceVersion: '160591442'
+  uid: 73ee438a-f383-43f3-9346-b901d9773f4b
+spec:
+  maxReplicaCount: 3
+  minReplicaCount: 0
+  scaleTargetRef:
+    name: keda
+  triggers:
+    - metadata:
+        desiredReplicas: '1'
+        end: 00 17 * * 1-5
+        start: 00 08 * * 1-5
+        timezone: Europe/Stockholm
+      type: cron
+status:
+  conditions:
+    - message: ScaledObject doesn't have correct triggers specification
+      reason: ScaledObjectCheckFailed
+      status: 'False'
+      type: Ready
+    - message: Scaling is not performed because triggers are not active
+      reason: ScalerNotActive
+      status: 'False'
+      type: Active
+    - message: No fallbacks are active on this scaled object
+      reason: NoFallbackFound
+      status: 'False'
+      type: Fallback
+    - status: Unknown
+      type: Paused
+  externalMetricNames:
+    - s0-cron-Europe-Stockholm-0008xx1-5-0019xx1-5
+  hpaName: keda-hpa
+  lastActiveTime: '2023-12-18T17:59:55Z'
+  originalReplicaCount: 1
+  scaleTargetGVKR:
+    group: apps
+    kind: Deployment
+    resource: deployments
+    version: v1
+  scaleTargetKind: apps/v1.Deployment

resource_customizations/keda.sh/ScaledObject/testdata/keda-healthy.yaml

@@ -0,0 +1,51 @@
+apiVersion: keda.sh/v1alpha1
+kind: ScaledObject
+metadata:
+  annotations:
+  finalizers:
+    - finalizer.keda.sh
+  labels:
+    argocd.argoproj.io/instance: keda-default
+  name: keda
+  namespace: keda
+  resourceVersion: '160591442'
+  uid: 73ee438a-f383-43f3-9346-b901d9773f4b
+spec:
+  maxReplicaCount: 3
+  minReplicaCount: 0
+  scaleTargetRef:
+    name: backstage
+  triggers:
+    - metadata:
+        desiredReplicas: '1'
+        end: 00 17 * * 1-5
+        start: 00 08 * * 1-5
+        timezone: Europe/Stockholm
+      type: cron
+status:
+  conditions:
+    - message: ScaledObject is defined correctly and is ready for scaling
+      reason: ScaledObjectReady
+      status: 'True'
+      type: Ready
+    - message: Scaling is not performed because triggers are not active
+      reason: ScalerNotActive
+      status: 'False'
+      type: Active
+    - message: No fallbacks are active on this scaled object
+      reason: NoFallbackFound
+      status: 'False'
+      type: Fallback
+    - status: Unknown
+      type: Paused
+  externalMetricNames:
+    - s0-cron-Europe-Stockholm-0008xx1-5-0019xx1-5
+  hpaName: keda-hpa-backstage-kambi-standard-chart
+  lastActiveTime: '2023-12-18T17:59:55Z'
+  originalReplicaCount: 1
+  scaleTargetGVKR:
+    group: apps
+    kind: Deployment
+    resource: deployments
+    version: v1
+  scaleTargetKind: apps/v1.Deployment

resource_customizations/keda.sh/ScaledObject/testdata/keda-progressing.yaml

@@ -0,0 +1,30 @@
+apiVersion: keda.sh/v1alpha1
+kind: ScaledObject
+metadata:
+  annotations:
+  finalizers:
+    - finalizer.keda.sh
+  labels:
+    argocd.argoproj.io/instance: keda-default
+  name: keda
+  namespace: keda
+  resourceVersion: '160591442'
+  uid: 73ee438a-f383-43f3-9346-b901d9773f4b
+spec:
+  maxReplicaCount: 3
+  minReplicaCount: 0
+  scaleTargetRef:
+    name: backstage
+  triggers:
+    - metadata:
+        desiredReplicas: '1'
+        end: 00 17 * * 1-5
+        start: 00 08 * * 1-5
+        timezone: Europe/Stockholm
+      type: cron
+status:
+  conditions:
+    - message: Creating HorizontalPodAutoscaler Object
+      reason: Running
+      status: 'True'
+      type: Running

resource_customizations/keda.sh/ScaledObject/testdata/keda-suspended.yaml

@@ -0,0 +1,51 @@
+apiVersion: keda.sh/v1alpha1
+kind: ScaledObject
+metadata:
+  annotations:
+  finalizers:
+    - finalizer.keda.sh
+  labels:
+    argocd.argoproj.io/instance: keda-default
+  name: keda
+  namespace: keda
+  resourceVersion: '160591442'
+  uid: 73ee438a-f383-43f3-9346-b901d9773f4b
+spec:
+  maxReplicaCount: 3
+  minReplicaCount: 0
+  scaleTargetRef:
+    name: backstage
+  triggers:
+    - metadata:
+        desiredReplicas: '1'
+        end: 00 17 * * 1-5
+        start: 00 08 * * 1-5
+        timezone: Europe/Stockholm
+      type: cron
+status:
+  conditions:
+    - message: ScaledObject is defined correctly and is ready for scaling
+      reason: ScaledObjectReady
+      status: 'True'
+      type: Ready
+    - message: ScaledObject check failed
+      reason: UnknownState
+      status: Unknown
+      type: Active
+    - status: Unknown
+      type: Fallback
+    - message: ScaledObject is paused
+      reason: ScaledObjectPaused
+      status: 'True'
+      type: Paused
+  externalMetricNames:
+    - s0-cron-Europe-Stockholm-0008xx1-5-0019xx1-5
+  hpaName: keda-hpa-backstage-kambi-standard-chart
+  lastActiveTime: '2023-12-18T17:59:55Z'
+  originalReplicaCount: 1
+  scaleTargetGVKR:
+    group: apps
+    kind: Deployment
+    resource: deployments
+    version: v1
+  scaleTargetKind: apps/v1.Deployment