feat: Add health checks for Crossplane providers (#4778)

Signed-off-by: Simon Rüegg <simon@rueggs.ch>

resource_customizations/pkg.crossplane.io/Provider/health.lua

@@ -0,0 +1,27 @@
+hs = {}
+if obj.status ~= nil then
+  if obj.status.conditions ~= nil then
+    installed = false
+    healthy = false
+    for i, condition in ipairs(obj.status.conditions) do
+      if condition.type == "Installed" then
+        installed = condition.status == "True"
+        installed_message = condition.reason
+      elseif condition.type == "Healthy" then
+        healthy = condition.status == "True"
+        healthy_message = condition.reason
+      end
+    end
+    if installed and healthy then
+      hs.status = "Healthy"
+    else
+      hs.status = "Degraded"
+    end
+    hs.message = installed_message .. " " .. healthy_message
+    return hs
+  end
+end
+
+hs.status = "Progressing"
+hs.message = "Waiting for provider to be installed"
+return hs

resource_customizations/pkg.crossplane.io/Provider/health_test.yaml

@@ -0,0 +1,17 @@
+tests:
+- healthStatus:
+    status: Progressing
+    message: Waiting for provider to be installed
+  inputPath: testdata/progressing_noStatus.yaml
+- healthStatus:
+    status: Degraded
+    message: ActivePackageRevision UnhealthyPackageRevision
+  inputPath: testdata/degraded_installed.yaml
+- healthStatus:
+    status: Degraded
+    message: UnpackingPackage HealthyPackageRevision
+  inputPath: testdata/degraded_healthy.yaml
+- healthStatus:
+    status: Healthy
+    message: ActivePackageRevision HealthyPackageRevision
+  inputPath: testdata/healthy.yaml

resource_customizations/pkg.crossplane.io/Provider/testdata/degraded_healthy.yaml

@@ -0,0 +1,23 @@
+apiVersion: pkg.crossplane.io/v1alpha1
+kind: Provider
+metadata:
+  creationTimestamp: "2020-10-28T15:25:56Z"
+  generation: 2
+  name: provider-helm
+  resourceVersion: "1664592"
+  selfLink: /apis/pkg.crossplane.io/v1alpha1/providers/provider-helm
+  uid: 6ce16954-64f1-48c5-8a80-e29af37fc736
+spec:
+  package: crossplane/provider-helm:v0.3.5error
+  revisionActivationPolicy: Automatic
+status:
+  conditions:
+  - lastTransitionTime: "2020-11-06T12:37:16Z"
+    reason: UnpackingPackage
+    status: "False"
+    type: Installed
+  - lastTransitionTime: "2020-11-06T10:19:07Z"
+    reason: HealthyPackageRevision
+    status: "True"
+    type: Healthy
+  currentRevision: provider-helm-7f275162c62e

resource_customizations/pkg.crossplane.io/Provider/testdata/degraded_installed.yaml

@@ -0,0 +1,23 @@
+apiVersion: pkg.crossplane.io/v1alpha1
+kind: Provider
+metadata:
+  creationTimestamp: "2020-10-28T15:25:56Z"
+  generation: 4
+  name: provider-helm
+  resourceVersion: "1666009"
+  selfLink: /apis/pkg.crossplane.io/v1alpha1/providers/provider-helm
+  uid: 6ce16954-64f1-48c5-8a80-e29af37fc736
+spec:
+  package: crossplane/provider-helm:v0.3.6
+  revisionActivationPolicy: Automatic
+status:
+  conditions:
+  - lastTransitionTime: "2020-11-06T12:44:22Z"
+    reason: ActivePackageRevision
+    status: "True"
+    type: Installed
+  - lastTransitionTime: "2020-11-06T12:44:21Z"
+    reason: UnhealthyPackageRevision
+    status: "False"
+    type: Healthy
+  currentRevision: provider-helm-61a254740524

resource_customizations/pkg.crossplane.io/Provider/testdata/healthy.yaml

@@ -0,0 +1,23 @@
+apiVersion: pkg.crossplane.io/v1alpha1
+kind: Provider
+metadata:
+  creationTimestamp: "2020-10-28T15:25:56Z"
+  generation: 4
+  name: provider-helm
+  resourceVersion: "1666154"
+  selfLink: /apis/pkg.crossplane.io/v1alpha1/providers/provider-helm
+  uid: 6ce16954-64f1-48c5-8a80-e29af37fc736
+spec:
+  package: crossplane/provider-helm:v0.3.6
+  revisionActivationPolicy: Automatic
+status:
+  conditions:
+  - lastTransitionTime: "2020-11-06T12:44:28Z"
+    reason: ActivePackageRevision
+    status: "True"
+    type: Installed
+  - lastTransitionTime: "2020-11-06T12:44:26Z"
+    reason: HealthyPackageRevision
+    status: "True"
+    type: Healthy
+  currentRevision: provider-helm-61a254740524

resource_customizations/pkg.crossplane.io/Provider/testdata/progressing_noStatus.yaml

@@ -0,0 +1,12 @@
+apiVersion: pkg.crossplane.io/v1alpha1
+kind: Provider
+metadata:
+  creationTimestamp: "2020-10-28T15:25:56Z"
+  generation: 4
+  name: provider-helm
+  resourceVersion: "1666154"
+  selfLink: /apis/pkg.crossplane.io/v1alpha1/providers/provider-helm
+  uid: 6ce16954-64f1-48c5-8a80-e29af37fc736
+spec:
+  package: crossplane/provider-helm:v0.3.6
+  revisionActivationPolicy: Automatic