feat: add Knative integration for CloudEvents notifications

- Add knative-operator dependency and minimal configuration
- Create CloudEvents sink, SinkBinding, and initialization job
- Add minimal RBAC permissions for Knative resources
- Update eoapi-notifier to 0.0.9 for Knative compatibility
- Include test values file for Knative integration testing

This minimal implementation introduces Knative functionality without
extensive CI/deployment script changes.

Author: pantierra

.github/workflows/helm-tests.yml

@@ -49,7 +49,6 @@ jobs:
 
       - name: Deploy eoAPI
         id: deploy
-        continue-on-error: true
         run: |
           echo "=== Starting eoAPI deployment ==="
           export RELEASE_NAME="$RELEASE_NAME"

CHANGELOG.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ### Added
+- Added Knative integration for CloudEvents notifications
 - Added local testing with k3s and minikube
 - Base local development values file (`local-base-values.yaml`)
 - Unified local cluster management with `CLUSTER_TYPE` variable

charts/eoapi/Chart.yaml

@@ -54,6 +54,10 @@ dependencies:
     repository: "https://devseed.com/eoapi-k8s/"
     condition: postgrescluster.enabled
   - name: eoapi-notifier
-    version: 0.0.8
+    version: 0.0.9
     repository: "oci://ghcr.io/developmentseed/charts"
     condition: eoapi-notifier.enabled
+  - name: knative-operator
+    version: 1.17.8
+    repository: https://knative.github.io/operator
+    condition: knative.enabled

charts/eoapi/local-base-values.yaml

@@ -95,3 +95,35 @@ ingress:
   host: "localhost"
   tls:
     enabled: false  # Simplify for local development
+
+eoapi-notifier:
+  enabled: true
+  serviceAccount:
+    create: false
+    name: ""
+  sources:
+    - type: pgstac
+      config:
+        connection:
+          existingSecret:
+            name: "eoapi-db-pguser-pgstac"
+            keys:
+              username: "user"
+              password: "password"
+              host: "host"
+              port: "port"
+              database: "dbname"
+  outputs:
+    - type: cloudevents
+      config:
+        source: "/eoapi/pgstac"
+        event_type: "org.eoapi.stac.item"
+
+knative:
+  enabled: true
+  version: "1.17"
+  cloudEventsSink:
+    enabled: true
+
+knative-operator:
+  tag: "v1.17.8"

charts/eoapi/local-k3s-values.yaml

@@ -7,3 +7,65 @@ ingress:
   className: "traefik"
   annotations:
     traefik.ingress.kubernetes.io/router.entrypoints: web
+
+# Knative components for CloudEvents
+knative:
+  enabled: true
+  cloudEventsSink:
+    enabled: true
+
+# eoapi-notifier configuration with CloudEvents output
+eoapi-notifier:
+  enabled: true
+  waitForKnativeCRDs: false
+  config:
+    logLevel: DEBUG
+    sources:
+      - type: pgstac
+        config:
+          channel: pgstac_items_change
+          connection:
+            existingSecret:
+              name: ""  # Set dynamically by deploy script
+              keys:
+                username: "user"
+                password: "password"
+                host: "host"
+                port: "port"
+                database: "dbname"
+    outputs:
+      - type: cloudevents
+        config:
+          source: /eoapi/pgstac
+          event_type: org.eoapi.stac.item
+          destination:
+            ref:
+              apiVersion: serving.knative.dev/v1
+              kind: Service
+              name: eoapi-cloudevents-sink
+  resources:
+    requests:
+      cpu: "50m"
+      memory: "64Mi"
+    limits:
+      cpu: "200m"
+      memory: "128Mi"
+
+# Reduce PostgreSQL resources for local development
+postgrescluster:
+  instances:
+    - name: "postgres"
+      replicas: 1
+      dataVolumeClaimSpec:
+        accessModes:
+          - "ReadWriteOnce"
+        resources:
+          requests:
+            storage: "1Gi"
+      resources:
+        requests:
+          cpu: "100m"
+          memory: "512Mi"
+        limits:
+          cpu: "500m"
+          memory: "1Gi"

charts/eoapi/templates/cloudevents-sink.yaml

@@ -0,0 +1,52 @@
+{{- $hasCloudEventsOutput := false }}
+{{- range (index .Values "eoapi-notifier").outputs }}
+{{- if eq .type "cloudevents" }}
+{{- $hasCloudEventsOutput = true }}
+{{- end }}
+{{- end }}
+{{- if and (index .Values "eoapi-notifier").enabled .Values.knative.enabled .Values.knative.cloudEventsSink.enabled $hasCloudEventsOutput }}
+---
+apiVersion: serving.knative.dev/v1
+kind: Service
+metadata:
+  name: eoapi-cloudevents-sink
+  namespace: {{ .Release.Namespace }}
+  labels:
+    {{- include "eoapi.labels" . | nindent 4 }}
+    app.kubernetes.io/component: cloudevents-sink
+  annotations:
+    helm.sh/hook: "post-install,post-upgrade"
+    helm.sh/hook-weight: "10"
+    helm.sh/hook-delete-policy: "before-hook-creation"
+spec:
+  template:
+    metadata:
+      annotations:
+        autoscaling.knative.dev/minScale: "1"
+        autoscaling.knative.dev/maxScale: "1"
+      labels:
+        {{- include "eoapi.selectorLabels" . | nindent 8 }}
+        app.kubernetes.io/component: cloudevents-sink
+    spec:
+      containers:
+      - name: cloudevents-sink
+        image: gcr.io/knative-samples/helloworld-go:latest
+        ports:
+        - containerPort: 8080
+        env:
+        - name: TARGET
+          value: "eoAPI CloudEvents Sink"
+        readinessProbe:
+          httpGet:
+            path: /
+            port: 8080
+          initialDelaySeconds: 5
+          periodSeconds: 10
+        livenessProbe:
+          httpGet:
+            path: /
+            port: 8080
+          initialDelaySeconds: 15
+          periodSeconds: 20
+
+{{- end }}