add an overlay integration test

Author: passcod

.github/workflows/integration.yml

@@ -34,6 +34,7 @@ jobs:
               test-invalid-secret
               test-missing-secret
             needs_non_pg_snapshot: false
+            needs_cnpg: false
 
           - name: error-paths
             tests: >-
@@ -43,20 +44,31 @@ jobs:
               test-non-pg-data
               test-wrong-bucket
             needs_non_pg_snapshot: true
+            needs_cnpg: false
 
           - name: ttls
             tests: >-
               minimum_ttl_prevents_premature_restore
             namespaces: >-
               test-min-ttl
             needs_non_pg_snapshot: true
+            needs_cnpg: false
 
           - name: switchover
             tests: >-
               second_restore_and_switchover
             namespaces: >-
               test-switchover
             needs_non_pg_snapshot: false
+            needs_cnpg: false
+
+          - name: overlay
+            tests: >-
+              overlay_fdw_reconciliation
+            namespaces: >-
+              test-overlay
+            needs_non_pg_snapshot: false
+            needs_cnpg: true
 
     steps:
       - uses: actions/checkout@v6
@@ -117,6 +129,20 @@ jobs:
           docker pull alpine:latest
           kind load docker-image minio/minio:latest minio/mc:latest kopia/kopia:latest postgres:16 postgres:16-alpine alpine:latest
 
+      - name: Pre-pull CNPG images
+        if: matrix.needs_cnpg
+        run: |
+          docker pull ghcr.io/cloudnative-pg/cloudnative-pg:1.25.1
+          docker pull ghcr.io/cloudnative-pg/postgresql:17
+          kind load docker-image ghcr.io/cloudnative-pg/cloudnative-pg:1.25.1 ghcr.io/cloudnative-pg/postgresql:17
+
+      - name: Install CNPG operator
+        if: matrix.needs_cnpg
+        run: |
+          kubectl apply --server-side -f https://raw.githubusercontent.com/cloudnative-pg/cloudnative-pg/release-1.25/releases/cnpg-1.25.1.yaml
+          kubectl wait --for=condition=Available deployment/cnpg-controller-manager -n cnpg-system --timeout=120s
+          echo "CNPG operator is ready"
+
       - name: Deploy MinIO
         run: |
           kubectl apply -f tests/fixtures/minio.yaml
@@ -232,6 +258,9 @@ jobs:
             kubectl get all -n "$ns" 2>/dev/null || true
           done
 
+          echo "=== CNPG Clusters ==="
+          kubectl get clusters.postgresql.cnpg.io -A -o yaml 2>/dev/null || true
+
           echo "=== PostgresPhysicalReplicas ==="
           kubectl get postgresphysicalreplicas -A -o yaml 2>/dev/null || true
 

tests/fixtures/setup-kopia-repo.yaml

@@ -34,6 +34,17 @@ spec:
                           mkdir -p /pgdata/16/main
                           chown postgres:postgres /pgdata/16/main
                           gosu postgres initdb -D /pgdata/16/main --no-locale --encoding=UTF8 --auth=trust
+
+                          echo "Starting temporary PostgreSQL to create application database..."
+                          gosu postgres pg_ctl -D /pgdata/16/main -l /tmp/pg.log start -w
+
+                          gosu postgres psql -d postgres -c "CREATE DATABASE myapp"
+                          gosu postgres psql -d myapp -c "CREATE TABLE test_data (id serial PRIMARY KEY, data text)"
+                          gosu postgres psql -d myapp -c "INSERT INTO test_data (data) SELECT repeat('x', 1000) FROM generate_series(1, 1000)"
+                          echo "Application database 'myapp' created with test data"
+
+                          gosu postgres pg_ctl -D /pgdata/16/main stop -w
+
                           echo "PostgreSQL data directory initialized"
                           ls -la /pgdata/16/main/
                           cat /pgdata/16/main/PG_VERSION