build(docker): add db-tools doker for backup/restore

.env.sample

@@ -0,0 +1 @@
+BACKUP_ZIP_PASSWORD=<zip-password>

.gitignore

@@ -1,3 +1,4 @@
+.npm/
 .idea/
 node_modules/
 bower_components/
@@ -9,3 +10,6 @@ public/css/main.css*
 uploads/
 public/*_stats.json
 public/organizations.json
+.env
+backups/
+restore/

compose.yml

@@ -87,6 +87,7 @@ services:
 
   testdb:
     image: postgres:9.4
+    restart: no
     environment:
       POSTGRES_PASSWORD: 'testpass'
       POSTGRES_USER: 'testuser'
@@ -97,13 +98,27 @@ services:
 
   dbadmin:
     image: adminer
+    restart: no
     links:
       - db
-      - testdb
     ports:
       - "8080:8080"
     profiles:
       - tools
 
+  db-tools:
+    build: docker/db-tools
+    restart: no
+    environment:
+      DATABASE_HOST: db
+      DATABASE_PORT: 5432
+      DATABASE_NAME: smartbirds
+      DATABASE_PASSWORD: 'secret'
+      DATABASE_USER: 'smartbirds'
+      BACKUP_ZIP_PASSWORD: ${BACKUP_ZIP_PASSWORD}
+    volumes:
+      - ./backups:/backups
+      - ./restore:/restore
+
 volumes:
   public:

docker/db-tools/Dockerfile

@@ -0,0 +1,17 @@
+FROM postgres:9.4
+
+COPY entrypoint.sh /entrypoint.sh
+
+RUN chmod +x /entrypoint.sh
+
+RUN echo "deb http://archive.debian.org/debian stretch main\ndeb http://archive.debian.org/debian-security stretch/updates main" > /etc/apt/sources.list
+RUN rm /etc/apt/sources.list.d/pgdg.list
+
+RUN apt-get update && apt-get -y install apt-transport-https
+
+RUN echo "deb https://apt-archive.postgresql.org/pub/repos/apt/ stretch-pgdg main" > /etc/apt/sources.list.d/pgdg.list
+
+RUN apt-get update && apt-get -y install zip && rm -rf /var/lib/apt/lists/*p
+
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["help"]

docker/db-tools/entrypoint.sh

@@ -0,0 +1,93 @@
+#!/bin/bash
+
+set -e
+
+function help {
+  echo "Available commands:"
+  echo "  backup [<backup-file>] - Backup the database to a file"
+  echo "  restore <backup-file> <dbname> - Restore the database from a file"
+  exit 1
+}
+
+[ $# -eq 0 ] && help
+
+cmd=$1
+
+case $cmd in
+  backup)
+    shift
+    (
+      #check if backup file name is provided
+      BACKUP_FILE=$1
+      if [ -z "$1" ]; then
+        echo "Backup file not provided. Using default file name"
+        BACKUP_FILE="backup-$(date +%Y-%m-%d-%H-%M-%S).dump"
+      fi
+
+      if [ -z "$BACKUP_ZIP_PASSWORD" ]; then
+        echo "Backup zip password not provided"
+        exit 1
+      fi
+
+      echo "Creating ${BACKUP_FILE} backup file ..."
+      export PGPASSWORD=$DATABASE_PASSWORD
+      pg_dump -w -Fc -h "$DATABASE_HOST" -p "$DATABASE_PORT" -U "$DATABASE_USER" "$DATABASE_NAME" \
+        | zip -q --password "$BACKUP_ZIP_PASSWORD" > /backups/"$BACKUP_FILE"
+      echo "Backup completed."
+    )
+    ;;
+  restore)
+    shift
+    (
+      #check if backup file name is provided
+      BACKUP_FILE=$1
+      if [ -z "$1" ]; then
+        echo "Backup file not provided"
+        exit 1
+      fi
+
+      DB_NAME=$2
+      if [ -z "$2" ]; then
+        echo "Database name not provided"
+        exit 1
+      fi
+
+      if [ -z "$BACKUP_ZIP_PASSWORD" ]; then
+        echo "Backup zip password not provided"
+        exit 1
+      fi
+
+      echo "Restoring ${BACKUP_FILE} backup file into ${DB_NAME} database ..."
+      export PGPASSWORD=$DATABASE_PASSWORD
+
+      # restore from backup file
+      createdb -w -h "$DATABASE_HOST" -p "$DATABASE_PORT" -U "$DATABASE_USER" "${DB_NAME}-temp" \
+        &&
+      unzip -p -P "$BACKUP_ZIP_PASSWORD" /restore/"$BACKUP_FILE" \
+        | pg_restore -w -x -O --clean --if-exists -h "$DATABASE_HOST" -p "$DATABASE_PORT" -U "$DATABASE_USER" --role "$DATABASE_USER" -d "${DB_NAME}-temp"
+
+      if [ $? -eq 0 ]; then
+        # Drop the original database
+        dropdb -w -h "$DATABASE_HOST" -p "$DATABASE_PORT" -U "$DATABASE_USER" "$DB_NAME" &&\
+        psql -w -h "$DATABASE_HOST" -p "$DATABASE_PORT" -U "$DATABASE_USER" -d postgres -c "ALTER DATABASE \"${DB_NAME}-temp\" RENAME TO \"$DB_NAME\";"
+      else
+        echo "Restore failed."
+        exit 1
+      fi
+
+      if [ $? -eq 0 ]; then
+        echo "Restore completed."
+      else
+        echo "Restore failed."
+        exit 1
+      fi
+    )
+    ;;
+  help)
+    help
+    ;;
+  *)
+    echo "Invalid command $cmd"
+    help
+    ;;
+esac