K8SPG-590 Add e2e test for database init sql functionality

e2e-tests/run-minikube.csv

@@ -1,6 +1,7 @@
 backup-enable-disable
 custom-extensions
 custom-tls
+database-init-sql
 demand-backup
 finalizers
 init-deploy

e2e-tests/run-pr.csv

@@ -1,6 +1,7 @@
 backup-enable-disable
 custom-extensions
 custom-tls
+database-init-sql
 demand-backup
 finalizers
 init-deploy

e2e-tests/run-release.csv

@@ -1,6 +1,7 @@
 backup-enable-disable
 custom-extensions
 custom-tls
+database-init-sql
 demand-backup
 finalizers
 init-deploy

e2e-tests/tests/database-init-sql/00-assert.yaml

@@ -0,0 +1,24 @@
+apiVersion: kuttl.dev/v1beta1
+kind: TestAssert
+timeout: 120
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  name: perconapgclusters.pgv2.percona.com
+spec:
+  group: pgv2.percona.com
+  names:
+    kind: PerconaPGCluster
+    listKind: PerconaPGClusterList
+    plural: perconapgclusters
+    singular: perconapgcluster
+  scope: Namespaced
+---
+apiVersion: kuttl.dev/v1beta1
+kind: TestAssert
+metadata:
+  name: check-operator-deploy-status
+timeout: 120
+commands:
+  - script: kubectl assert exist-enhanced deployment percona-postgresql-operator -n ${OPERATOR_NS:-$NAMESPACE} --field-selector status.readyReplicas=1

e2e-tests/tests/database-init-sql/00-deploy-operator.yaml

@@ -0,0 +1,13 @@
+apiVersion: kuttl.dev/v1beta1
+kind: TestStep
+timeout: 10
+commands:
+  - script: |-
+      set -o errexit
+      set -o xtrace
+
+      source ../../functions
+      init_temp_dir # do this only in the first TestStep
+
+      deploy_operator
+      deploy_client

e2e-tests/tests/database-init-sql/01-assert.yaml

@@ -0,0 +1,12 @@
+apiVersion: kuttl.dev/v1beta1
+kind: TestAssert
+timeout: 30
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: init-database-sql
+data:
+  init.sql: |
+    CREATE TABLE e2e_init_table(id INT PRIMARY KEY);
+    INSERT INTO e2e_init_table VALUES (42);

e2e-tests/tests/database-init-sql/01-init-database-sql-configmap.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: init-database-sql
+data:
+  init.sql: |
+    CREATE TABLE e2e_init_table(id INT PRIMARY KEY);
+    INSERT INTO e2e_init_table VALUES (42);

e2e-tests/tests/database-init-sql/02-assert.yaml

@@ -0,0 +1,88 @@
+apiVersion: kuttl.dev/v1beta1
+kind: TestAssert
+timeout: 300
+---
+kind: StatefulSet
+apiVersion: apps/v1
+metadata:
+  labels:
+    postgres-operator.crunchydata.com/cluster: database-init-sql
+    postgres-operator.crunchydata.com/data: postgres
+    postgres-operator.crunchydata.com/instance-set: instance1
+  ownerReferences:
+    - apiVersion: postgres-operator.crunchydata.com/v1beta1
+      kind: PostgresCluster
+      name: database-init-sql
+      controller: true
+      blockOwnerDeletion: true
+status:
+  observedGeneration: 1
+  replicas: 1
+  readyReplicas: 1
+  updatedReplicas: 1
+  collisionCount: 0
+---
+kind: Deployment
+apiVersion: apps/v1
+metadata:
+  name: database-init-sql-pgbouncer
+  labels:
+    postgres-operator.crunchydata.com/cluster: database-init-sql
+    postgres-operator.crunchydata.com/role: pgbouncer
+  annotations:
+    deployment.kubernetes.io/revision: '1'
+  ownerReferences:
+    - apiVersion: postgres-operator.crunchydata.com/v1beta1
+      kind: PostgresCluster
+      name: database-init-sql
+      controller: true
+      blockOwnerDeletion: true
+status:
+  observedGeneration: 1
+  replicas: 3
+  updatedReplicas: 3
+  readyReplicas: 3
+---
+apiVersion: postgres-operator.crunchydata.com/v1beta1
+kind: PostgresCluster
+metadata:
+  name: database-init-sql
+  ownerReferences:
+    - apiVersion: pgv2.percona.com/v2
+      kind: PerconaPGCluster
+      name: database-init-sql
+      controller: true
+      blockOwnerDeletion: true
+  finalizers:
+    - postgres-operator.crunchydata.com/finalizer
+spec:
+  backups:
+    pgbackrest: {}
+status:
+  instances:
+    - name: instance1
+      readyReplicas: 3
+      replicas: 3
+      updatedReplicas: 3
+  observedGeneration: 1
+  proxy:
+    pgBouncer:
+      readyReplicas: 3
+      replicas: 3
+---
+apiVersion: pgv2.percona.com/v2
+kind: PerconaPGCluster
+metadata:
+  name: database-init-sql
+status:
+  pgbouncer:
+    ready: 3
+    size: 3
+  postgres:
+    instances:
+    - name: instance1
+      ready: 3
+      size: 3
+    ready: 3
+    size: 3
+  state: ready

e2e-tests/tests/database-init-sql/02-create-cluster.yaml

@@ -0,0 +1,14 @@
+apiVersion: kuttl.dev/v1beta1
+kind: TestStep
+timeout: 10
+commands:
+  - script: |-
+      set -o errexit
+      set -o xtrace
+
+      source ../../functions
+
+      get_cr \
+        | yq '.spec.databaseInitSQL.name = "init-database-sql"' \
+        | yq '.spec.databaseInitSQL.key = "init.sql"' \
+        | kubectl -n "${NAMESPACE}" apply -f -

e2e-tests/tests/database-init-sql/03-verify-database-initialized.yaml

@@ -0,0 +1,18 @@
+apiVersion: kuttl.dev/v1beta1
+kind: TestStep
+commands:
+  - script: |-
+      set -o errexit
+      set -o xtrace
+
+      source ../../functions
+
+      result=$(run_psql_local \
+        "SELECT id FROM e2e_init_table WHERE id = 42" \
+        "postgres:$(get_psql_user_pass database-init-sql-pguser-postgres)@$(get_psql_user_host database-init-sql-pguser-postgres)/postgres")
+
+      if [[ "$result" != *"42"* ]]; then
+        echo "Database has not been initialized"
+        exit 1
+      fi
+    timeout: 360

e2e-tests/tests/database-init-sql/99-remove-cluster-gracefully.yaml

@@ -0,0 +1,21 @@
+apiVersion: kuttl.dev/v1beta1
+kind: TestStep
+delete:
+- apiVersion: pgv2.percona.com/v2
+  kind: PerconaPGCluster
+  metadata:
+    name: database-init-sql
+- apiVersion: postgres-operator.crunchydata.com/v1beta1
+  kind: PostgresCluster
+  metadata:
+    name: database-init-sql
+commands:
+  - script: |-
+      set -o errexit
+      set -o xtrace
+
+      source ../../functions
+
+      remove_all_finalizers
+      destroy_operator
+    timeout: 60