feat: selectable database to backup

This can be used to select database exclude system database which will
cause error on import.

src/controllers/backup-controller.ts

@@ -19,6 +19,7 @@ const DB_HOST = getEnvVar("DB_HOST");
 const DB_PORT = process.env.DB_PORT;
 const DB_USERNAME = getEnvVar("DB_USERNAME");
 const DB_PASSWORD = getEnvVar("DB_PASSWORD");
+const DB_LIST = process.env.DB_LIST;
 const MAIN_MINIO_USE_SSL = getEnvVar("MAIN_MINIO_USE_SSL");
 const MAIN_MINIO_HOST = getEnvVar("MAIN_MINIO_HOST");
 const MAIN_MINIO_PORT = process.env.MAIN_MINIO_PORT;
@@ -141,6 +142,7 @@ export class BackupController extends Controller {
             db_port: DB_PORT,
             db_user: DB_USERNAME,
             db_password: DB_PASSWORD,
+            db_list: DB_LIST?.replace(",", " "),
           },
         }),
       },

windmill/scripts.md

@@ -16,8 +16,9 @@ db_host="$6"
 db_port="$7"
 db_user="$8"
 db_password="$9"
+db_list="${10:-DUMP-ALL}"
 
-backup_filename="${10:-auto-backup}"
+backup_filename="${11:-auto-backup}"
 
 if [[ -z $(which mysqldump) ]]; then
   apt-get install -y default-mysql-client
@@ -45,13 +46,26 @@ else
   now=""
 fi
 
+
 file_ext="sql.gz"
 
 echo "Backing up database and uploading to ${s3_bucket}/${s3_prefix}${now}${backup_filename}.${file_ext}"
 
-mysqldump -h "$db_host" -P "$db_port" -u "$db_user" -p"$db_password" --all-databases --add-drop-database --single-transaction --skip-lock-tables \
-  | gzip \
-  | aws --endpoint-url "$s3_endpoint" s3 cp - "s3://${s3_bucket}/${s3_prefix}${now}${backup_filename}.${file_ext}"
+# if database list is all
+if [ "$db_list" == "DUMP-ALL" ]; then
+  echo "Dumping all databases..."
+  mysqldump -h "$db_host" -P "$db_port" -u "$db_user" -p"$db_password" --all-databases --add-drop-database --single-transaction --skip-lock-tables \
+    | gzip \
+    | aws --endpoint-url "$s3_endpoint" s3 cp - "s3://${s3_bucket}/${s3_prefix}${now}${backup_filename}.${file_ext}"
+else
+  echo "Dumping ${db_list} database..."
+  db_list=($db_list)
+  mysqldump -h "$db_host" -P "$db_port" -u "$db_user" -p"$db_password" --add-drop-database --single-transaction --skip-lock-tables --databases "${db_list[@]}" \
+    | gzip \
+    | aws --endpoint-url "$s3_endpoint" s3 cp - "s3://${s3_bucket}/${s3_prefix}${now}${backup_filename}.${file_ext}"
+fi
+
+echo "success"
 ```
 
 ```bash
@@ -218,6 +232,10 @@ value:
           db_host:
             expr: "`${flow_input.database.db_host}`"
             type: javascript
+          db_list:
+            expr: "`${!!flow_input.database.db_list ? flow_input.database.db_list :
+              'DUMP-ALL'}`"
+            type: javascript
           db_port:
             expr: "`${flow_input.database.db_port}`"
             type: javascript
@@ -299,6 +317,9 @@ schema:
           disableVariablePicker: false
           disableCreate: false
           password: true
+        db_list:
+          type: string
+          description: ""
         s3_endpoint:
           type: string
           description: ""
@@ -357,6 +378,7 @@ schema:
         - db_port
         - db_user
         - db_password
+        - db_list
         - s3_endpoint
         - s3_access
         - s3_secret