Take a backup before calling app commands. Closes #1730

app/Subscribers/CommandSubscriber.php

@@ -0,0 +1,117 @@
+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CachetHQ\Cachet\Subscribers;
+
+use Carbon\Carbon;
+use Illuminate\Console\Command;
+use Illuminate\Contracts\Config\Repository;
+use Illuminate\Contracts\Events\Dispatcher;
+
+/**
+ * This is the command subscriber class.
+ *
+ * @author James Brooks <james@alt-three.com>
+ */
+class CommandSubscriber
+{
+    /**
+     * The config repository.
+     *
+     * @var \Illuminate\Contracts\Config\Repository
+     */
+    protected $config;
+
+    /**
+     * Create a new command subscriber instance.
+     *
+     * @param \Illuminate\Contracts\Config\Repository $config
+     *
+     * @return void
+     */
+    public function __construct(Repository $config)
+    {
+        $this->config = $config;
+    }
+
+    /**
+     * Register the listeners for the subscriber.
+     *
+     * @param \Illuminate\Contracts\Events\Dispatcher $events
+     *
+     * @return void
+     */
+    public function subscribe(Dispatcher $events)
+    {
+        $events->listen('command.installing', __CLASS__.'@onInstalling', 5);
+        $events->listen('command.updating', __CLASS__.'@onUpdating', 5);
+        $events->listen('command.resetting', __CLASS__.'@onResetting', 5);
+    }
+
+    /**
+     * Handle a command.installing event.
+     *
+     * @param \Illuminate\Console\Command $command
+     *
+     * @return void
+     */
+    public function onInstalling(Command $command)
+    {
+        $this->backupDatabases($command);
+    }
+
+    /**
+     * Handle a command.updating event.
+     *
+     * @param \Illuminate\Console\Command $command
+     *
+     * @return void
+     */
+    public function onUpdating(Command $command)
+    {
+        $this->backupDatabases($command);
+    }
+
+    /**
+     * Handle a command.resetting event.
+     *
+     * @param \Illuminate\Console\Command $command
+     *
+     * @return void
+     */
+    public function onResetting(Command $command)
+    {
+        $this->backupDatabases($command);
+    }
+
+    /**
+     * Backup the databases.
+     *
+     * @param \Illuminate\Console\Command $command
+     *
+     * @return void
+     */
+    protected function backupDatabases(Command $command)
+    {
+        $command->line('Backing up database...');
+
+        $date = Carbon::now()->format('Y-m-d H.i.s');
+
+        $command->call('db:backup', [
+            '--database'        => $this->config->get('database.default'),
+            '--destination'     => 'local',
+            '--destinationPath' => $date,
+            '--compression'     => 'gzip',
+        ]);
+
+        $command->line('Backup completed...');
+    }
+}