Add many more tasks that are needed for transformation scripts in a

pipeline.

@@ -4,6 +4,9 @@ kind: Kustomization
 resources:
   - ./service-account.yaml
   - ./task-postgresql-pod.yaml
+  - ./task-postgresql-create-databases-users.yaml
+  - ./task-postgresql-import.yaml
+  - ./task-postgresql-export.yaml
 
 configMapGenerator:
   - name: task-postgresql-pod-kustomization
@@ -14,5 +17,13 @@ configMapGenerator:
       - postgresql-pod_postgresql-pod.yaml=postgresql-pod/postgresql-pod.yaml
       - postgresql-pod_set-deployment-config_deployment-config.env=postgresql-pod/set-deployment-config/deployment-config.env
       - postgresql-pod_set-deployment-config_kustomization.yaml=postgresql-pod/set-deployment-config/kustomization.yaml
+  - name: task-postgresql-scripts
+    options:
+      disableNameSuffixHash: true
+    files:
+      - scripts/create-databases-users.sh
+      - scripts/export-dumps.sh
+      - scripts/import-dumps.sh
+      - scripts/wait-for-postgresql.sh
 
 ---

+#!/bin/bash
+
+set -ex
+
+mode=
+touch /tmp/pgpass
+chmod 0600 /tmp/pgpass
+echo "*:*:*:*:CHANGEME" > /tmp/pgpass
+export PGPASSFILE=/tmp/pgpass
+
+while [[ $# -gt 0 ]]; do
+	case "$1" in
+		(--databases)
+			mode="databases"
+			;;
+		(--users)
+			mode="users"
+			;;
+		(--*)
+			echo "Unknown mode: $1" 1>&2
+			exit 1
+			;;
+		(*)
+			case "$mode" in
+				(databases)
+					createdb -w -h ${POSTGRESQL_HOST} -U postgres "$1"
+					;;
+				(users)
+					createuser -w -h ${POSTGRESQL_HOST} -U postgres "$1"
+					;;
+			esac
+			;;
+	esac
+	shift
+done
+

+#!/bin/bash
+
+set -ex
+
+touch /tmp/pgpass
+chmod 0600 /tmp/pgpass
+echo "*:*:*:*:CHANGEME" > /tmp/pgpass
+export PGPASSFILE=/tmp/pgpass
+
+ls /workspace
+for database in "$@"; do
+	pg_dump -w -h ${POSTGRESQL_HOST} -U postgres "$database" | gzip -9v > "/workspace/exports/$database.gz"
+done
+

+#!/bin/bash
+
+set -ex
+
+touch /tmp/pgpass
+chmod 0600 /tmp/pgpass
+echo "*:*:*:*:CHANGEME" > /tmp/pgpass
+export PGPASSFILE=/tmp/pgpass
+
+_import() {
+	psql -w -h ${POSTGRESQL_HOST} -U postgres "$1"
+}
+
+ls -alR /workspace
+for file in /workspace/imports/*; do
+	[[ -e $file ]] || continue
+	case "$file" in
+		(*.sql.gz)
+			database="$(basename "$file" .sql.gz)"
+			zcat "$file" | _import "$database"
+			;;
+		(*.sql)
+			database="$(basename "$file" .sql)"
+			cat "$file" | _import "$database"
+			;;
+		(*)
+			echo "Ignoring file: $file"
+			;;
+	esac
+done
+

+#!/bin/sh
+set -ex
+
+check_pg() {
+	pg_isready -h ${POSTGRESQL_HOST} -U postgres 
+}
+
+while ! check_pg; do
+	echo "Waiting for database" 1>&2
+	sleep 1
+	count=5
+	while [ $count -gt 0 ] && ! check_pg; do
+		count=$(($count - 1))
+		sleep 1
+	done
+done
+

+---
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: task-postgresql-create-databases-users
+spec:
+  params:
+    - name: databases
+      type: array
+    - name: users
+      type: array
+    - name: POSTGRESQL_HOST
+      type: string
+    - name: postgresql-image
+      type: string
+      default: bitnami/postgresql:14.1.0-debian-10-r66
+  volumes:
+    - name: task-postgresql-scripts
+      configMap:
+        name: task-postgresql-scripts
+        defaultMode: 0755
+  steps:
+    - name: wait-for-start
+      image: $(params.postgresql-image)
+      command: ["/scripts/wait-for-postgresql.sh"]
+      env:
+        - name: POSTGRESQL_HOST
+          value: $(params.POSTGRESQL_HOST)
+      volumeMounts:
+        - name: task-postgresql-scripts
+          mountPath: /scripts
+    - name: create-databases-users
+      image: $(params.postgresql-image)
+      command: ["/scripts/create-databases-users.sh"]
+      args: ["--databases", "$(params.databases[*])", "--users", "$(params.users[*])"]
+      env:
+        - name: POSTGRESQL_HOST
+          value: $(params.POSTGRESQL_HOST)
+      volumeMounts:
+        - name: task-postgresql-scripts
+          mountPath: /scripts
+---

+---
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: task-postgresql-export
+spec:
+  params:
+    - name: exports
+      type: array
+    - name: POSTGRESQL_HOST
+      type: string
+    - name: postgresql-image
+      type: string
+      default: bitnami/postgresql:14.1.0-debian-10-r66
+  workspaces:
+    - name: exports
+      description: The database exports will be placed in this workspace.
+  volumes:
+    - name: task-postgresql-scripts
+      configMap:
+        name: task-postgresql-scripts
+        defaultMode: 0755
+  steps:
+    - name: wait-for-start
+      image: $(params.postgresql-image)
+      command: ["/scripts/wait-for-postgresql.sh"]
+      env:
+        - name: POSTGRESQL_HOST
+          value: $(params.POSTGRESQL_HOST)
+      volumeMounts:
+        - name: task-postgresql-scripts
+          mountPath: /scripts
+    - name: exports
+      image: $(params.postgresql-image)
+      command: ["/scripts/export-dumps.sh", "$(params.exports[*])"]
+      env:
+        - name: POSTGRESQL_HOST
+          value: $(params.POSTGRESQL_HOST)
+      volumeMounts:
+        - name: task-postgresql-scripts
+          mountPath: /scripts
+
+---
+

+---
+apiVersion: tekton.dev/v1beta1
+kind: Task
+metadata:
+  name: task-postgresql-import
+spec:
+  params:
+    - name: POSTGRESQL_HOST
+      type: string
+    - name: postgresql-image
+      type: string
+      default: bitnami/postgresql:14.1.0-debian-10-r66
+  workspaces:
+    - name: imports
+      description: Place any input database dump files here
+  volumes:
+    - name: task-postgresql-scripts
+      configMap:
+        name: task-postgresql-scripts
+        defaultMode: 0755
+  steps:
+    - name: wait-for-start
+      image: $(params.postgresql-image)
+      command: ["/scripts/wait-for-postgresql.sh"]
+      env:
+        - name: POSTGRESQL_HOST
+          value: $(params.POSTGRESQL_HOST)
+      volumeMounts:
+        - name: task-postgresql-scripts
+          mountPath: /scripts
+    - name: imports
+      image: $(params.postgresql-image)
+      command: ["/scripts/import-dumps.sh"]
+      env:
+        - name: POSTGRESQL_HOST
+          value: $(params.POSTGRESQL_HOST)
+      volumeMounts:
+        - name: task-postgresql-scripts
+          mountPath: /scripts
+---