add test for interacting with a swarm stack

.circleci/config.yml

@@ -14,8 +14,15 @@ jobs:
       - run:
           name: Run tests
           command: |
-            for test in test/**/test.sh; do
+            for test in test/**/run.sh; do
+              echo "################################################"
+              echo "Now running $test"
+              echo "################################################"
+              echo ""
               /bin/sh $test
+              echo ""
+              echo "$test passed"
+              echo ""
             done
 
   build:

test/default/run.sh

@@ -13,12 +13,14 @@ docker run --rm -it \
   -v default_backup_data:/data alpine \
   ash -c 'tar -xf /data/backup/test.tar.gz && test -f /backup/app_data/offen.db'
 
+echo "[TEST:PASS] Found relevant files in untared backup."
+
 if [ "$(docker-compose ps -q | wc -l)" != "3" ]; then
-  echo "Expected all containers to be running post backup, instead seen:"
+  echo "[TEST:FAIL] Expected all containers to be running post backup, instead seen:"
   docker-compose ps
   exit 1
 fi
 
-docker-compose down --volumes
+echo "[TEST:PASS] All containers running post backup."
 
-echo "Test passed"
+docker-compose down --volumes

test/swarm/docker-compose.yml

@@ -0,0 +1,63 @@
+# Copyright 2020-2021 - Offen Authors <hioffen@posteo.de>
+# SPDX-License-Identifier: Unlicense
+
+version: '3.8'
+
+services:
+  minio:
+    image: minio/minio:RELEASE.2020-08-04T23-10-51Z
+    deploy:
+      restart_policy:
+        condition: on-failure
+    environment:
+      MINIO_ROOT_USER: test
+      MINIO_ROOT_PASSWORD: test
+      MINIO_ACCESS_KEY: test
+      MINIO_SECRET_KEY: GMusLtUmILge2by+z890kQ
+    entrypoint: /bin/ash -c 'mkdir -p /data/backup && minio server /data'
+    volumes:
+      - backup_data:/data
+
+  backup: &default_backup_service
+    image: offen/docker-volume-backup:canary
+    depends_on:
+      - minio
+    deploy:
+      restart_policy:
+        condition: on-failure
+    environment:
+      AWS_ACCESS_KEY_ID: test
+      AWS_SECRET_ACCESS_KEY: GMusLtUmILge2by+z890kQ
+      AWS_ENDPOINT: minio:9000
+      AWS_ENDPOINT_PROTO: http
+      AWS_S3_BUCKET_NAME: backup
+      BACKUP_FILENAME: test.tar.gz
+      BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
+    volumes:
+      - pg_data:/backup/pg_data:ro
+      - /var/run/docker.sock:/var/run/docker.sock
+
+  offen:
+    image: offen/offen:latest
+    labels:
+      - docker-volume-backup.stop-during-backup=true
+    deploy:
+      replicas: 2
+      restart_policy:
+        condition: on-failure
+
+  pg:
+    image: postgres:12.2-alpine
+    environment:
+      POSTGRES_PASSWORD: example
+    labels:
+      - docker-volume-backup.stop-during-backup=true
+    volumes:
+      - pg_data:/var/lib/postgresql/data
+    deploy:
+      restart_policy:
+        condition: on-failure
+
+volumes:
+  backup_data:
+  pg_data:

test/swarm/run.sh

@@ -0,0 +1,36 @@
+#!/bin/sh
+
+set -e
+
+cd $(dirname $0)
+
+docker swarm init
+
+docker stack deploy --compose-file=docker-compose.yml test_stack
+
+while [ -z $(docker ps -q -f name=backup) ]; do
+  echo "[TEST:INFO] Backup container not ready yet. Retrying."
+  sleep 1
+done
+
+sleep 5
+
+docker exec $(docker ps -q -f name=backup) backup
+
+docker run --rm -it \
+  -v test_stack_backup_data:/data alpine \
+  ash -c 'tar -xf /data/backup/test.tar.gz && test -f /backup/pg_data/pg_stat/global.stat'
+
+echo "[TEST:PASS] Found relevant files in untared backup."
+
+if [ "$(docker ps -q | wc -l)" != "5" ]; then
+  echo "[TEST:FAIL] Expected all containers to be running post backup, instead seen:"
+  docker ps -a
+  exit 1
+fi
+
+echo "[TEST:PASS] All containers running post backup."
+
+docker stack rm test_stack
+
+docker swarm leave --force