@@ -0,0 +1,20 @@
+<?php
+
+namespace ProcessMaker\Http\Controllers;
+
+use Carbon\Carbon;
+use Illuminate\Support\Facades\Request;
+use ProcessMaker\Events\ScreenBuilderStarting;
+use ProcessMaker\Managers\ScreenBuilderManager;
+use ProcessMaker\Models\Notification;
+use ProcessMaker\Models\ProcessRequestToken;
+use ProcessMaker\Traits\SearchAutocompleteTrait;
+
+class UnavailableController extends Controller
+{
+
+    public function show()
+    {
+        return view('errors.unavailable');
+    }
+}
@@ -64,6 +64,7 @@ class Kernel extends HttpKernel
         'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
         'sanitize' => \ProcessMaker\Http\Middleware\SanitizeInput::class,
         'setlocale' => \ProcessMaker\Http\Middleware\SetLocale::class,
-        'setskin' => \ProcessMaker\Http\Middleware\SetSkin::class
+        'setskin' => \ProcessMaker\Http\Middleware\SetSkin::class,
+        'external.connection' => \ProcessMaker\Http\Middleware\ValidateExternalConnection::class
     ];
 }
@@ -0,0 +1,31 @@
+<?php
+namespace ProcessMaker\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\DB;
+
+class ValidateExternalConnection
+{
+    /**
+     * The names of the attributes that should not be trimmed.
+     *
+     * @var array
+     */
+    protected $except = [
+        'password',
+        'password_confirmation',
+    ];
+
+    public function handle(Request $request, Closure $next)
+    {
+        try {
+            DB::connection('data')->getPdo();
+        }
+        catch (\Exception $e) {
+            return redirect('/unavailable');
+        }
+
+        return $next($request);
+    }
+}
@@ -0,0 +1,18 @@
+@extends('layouts.layout')
+
+@section('title')
+  {{__('Server Error - ProcessMaker')}}
+@endsection
+
+@section('sidebar')
+@include('layouts.sidebar', ['sidebar'=> Menu::get('sidebar_designer')])
+@endsection
+
+@section('content')
+ <div class="container mr-5 mt-5">
+     <img class="ml-5" src="/img/robot.png"/>
+    <h1>{{__('Server Error')}}</h1>
+    <p>{{__('One of the data sources in unavailable. Contact with your system administrator.')}}</p>
+</div>
+@endsection
+
@@ -2,7 +2,7 @@
 
 use ProcessMaker\Http\Controllers\Api\Requests\RequestsController;
 
-Route::group(['middleware' => ['auth', 'sanitize']], function () {
+Route::group(['middleware' => ['auth', 'sanitize', 'external.connection']], function () {
 
 // Routes related to Authentication (password reset, etc)
 // Auth::routes();
@@ -103,3 +103,7 @@
 $this->get('password/success', function () {
     return view('auth.passwords.success', ['title' => __('Password Reset')]);
 })->name('password-success');
+
+
+$this->get('/unavailable', 'UnavailableController@show')->name('error.unavailable');
+
Original file line number	Diff line number	Diff line change
`@@ -64,6 +64,7 @@ class Kernel extends HttpKernel`
`64`	`64`	`'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,`
`65`	`65`	`'sanitize' => \ProcessMaker\Http\Middleware\SanitizeInput::class,`
`66`	`66`	`'setlocale' => \ProcessMaker\Http\Middleware\SetLocale::class,`
`67`		`- 'setskin' => \ProcessMaker\Http\Middleware\SetSkin::class`
	`67`	`+ 'setskin' => \ProcessMaker\Http\Middleware\SetSkin::class,`
	`68`	`+ 'external.connection' => \ProcessMaker\Http\Middleware\ValidateExternalConnection::class`
`68`	`69`	`];`
`69`	`70`	`}`