Add statistic tracking

app/Commands/ShareCurrentWorkingDirectoryCommand.php

@@ -8,13 +8,13 @@ class ShareCurrentWorkingDirectoryCommand extends ShareCommand
 
     public function handle()
     {
-        $subdomain = $this->detectName();
-        $host = $this->prepareSharedHost($subdomain.'.'.$this->detectTld());
+        $folderName = $this->detectName();
+        $host = $this->prepareSharedHost($folderName.'.'.$this->detectTld());
 
         $this->input->setArgument('host', $host);
 
         if (! $this->option('subdomain')) {
-            $this->input->setOption('subdomain', $subdomain);
+            $this->input->setOption('subdomain', str_replace('.', '-', $folderName));
         }
 
         parent::handle();
@@ -56,7 +56,7 @@ class ShareCurrentWorkingDirectoryCommand extends ShareCommand
             }
         }
 
-        return str_replace('.', '-', basename($projectPath));
+        return basename($projectPath);
     }
 
     protected function detectProtocol($host): string

app/Contracts/StatisticsCollector.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Contracts;
+
+interface StatisticsCollector
+{
+    public function siteShared($authToken = null);
+
+    public function portShared($authToken = null);
+
+    public function incomingRequest();
+
+    public function flush();
+
+    public function save();
+
+    public function shouldCollectStatistics(): bool;
+}

app/Contracts/StatisticsRepository.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace App\Contracts;
+
+use React\Promise\PromiseInterface;
+
+interface StatisticsRepository
+{
+    public function getStatistics($from, $until): PromiseInterface;
+}

app/Contracts/UserRepository.php

@@ -19,4 +19,6 @@ interface UserRepository
     public function deleteUser($id): PromiseInterface;
 
     public function getUsersByTokens(array $authTokens): PromiseInterface;
+
+    public function updateLastSharedAt($id): PromiseInterface;
 }

app/Server/Connections/ConnectionManager.php

@@ -3,6 +3,7 @@
 namespace App\Server\Connections;
 
 use App\Contracts\ConnectionManager as ConnectionManagerContract;
+use App\Contracts\StatisticsCollector;
 use App\Contracts\SubdomainGenerator;
 use App\Http\QueryParameters;
 use App\Server\Exceptions\NoFreePortAvailable;
@@ -25,10 +26,14 @@ class ConnectionManager implements ConnectionManagerContract
     /** @var LoopInterface */
     protected $loop;
 
-    public function __construct(SubdomainGenerator $subdomainGenerator, LoopInterface $loop)
+    /** @var StatisticsCollector */
+    protected $statisticsCollector;
+
+    public function __construct(SubdomainGenerator $subdomainGenerator, StatisticsCollector $statisticsCollector, LoopInterface $loop)
     {
         $this->subdomainGenerator = $subdomainGenerator;
         $this->loop = $loop;
+        $this->statisticsCollector = $statisticsCollector;
     }
 
     public function limitConnectionLength(ControlConnection $connection, int $maximumConnectionLength)
@@ -60,6 +65,8 @@ class ConnectionManager implements ConnectionManagerContract
 
         $this->connections[] = $storedConnection;
 
+        $this->statisticsCollector->siteShared($this->getAuthTokenFromConnection($connection));
+
         return $storedConnection;
     }
 
@@ -79,6 +86,8 @@ class ConnectionManager implements ConnectionManagerContract
 
         $this->connections[] = $storedConnection;
 
+        $this->statisticsCollector->portShared($this->getAuthTokenFromConnection($connection));
+
         return $storedConnection;
     }
 

app/Server/Factory.php

@@ -3,6 +3,8 @@
 namespace App\Server;
 
 use App\Contracts\ConnectionManager as ConnectionManagerContract;
+use App\Contracts\StatisticsCollector;
+use App\Contracts\StatisticsRepository;
 use App\Contracts\SubdomainGenerator;
 use App\Contracts\SubdomainRepository;
 use App\Contracts\UserRepository;
@@ -15,6 +17,7 @@ use App\Server\Http\Controllers\Admin\DisconnectSiteController;
 use App\Server\Http\Controllers\Admin\DisconnectTcpConnectionController;
 use App\Server\Http\Controllers\Admin\GetSettingsController;
 use App\Server\Http\Controllers\Admin\GetSitesController;
+use App\Server\Http\Controllers\Admin\GetStatisticsController;
 use App\Server\Http\Controllers\Admin\GetTcpConnectionsController;
 use App\Server\Http\Controllers\Admin\GetUserDetailsController;
 use App\Server\Http\Controllers\Admin\GetUsersController;
@@ -29,6 +32,8 @@ use App\Server\Http\Controllers\Admin\StoreUsersController;
 use App\Server\Http\Controllers\ControlMessageController;
 use App\Server\Http\Controllers\TunnelMessageController;
 use App\Server\Http\Router;
+use App\Server\StatisticsCollector\DatabaseStatisticsCollector;
+use App\Server\StatisticsRepository\DatabaseStatisticsRepository;
 use Clue\React\SQLite\DatabaseInterface;
 use Phar;
 use Ratchet\Server\IoServer;
@@ -128,6 +133,7 @@ class Factory
         $this->router->get('/sites', ListSitesController::class, $adminCondition);
         $this->router->get('/tcp', ListTcpConnectionsController::class, $adminCondition);
 
+        $this->router->get('/api/statistics', GetStatisticsController::class, $adminCondition);
         $this->router->get('/api/settings', GetSettingsController::class, $adminCondition);
         $this->router->post('/api/settings', StoreSettingsController::class, $adminCondition);
         $this->router->get('/api/users', GetUsersController::class, $adminCondition);
@@ -179,6 +185,7 @@ class Factory
             ->bindSubdomainRepository()
             ->bindDatabase()
             ->ensureDatabaseIsInitialized()
+            ->registerStatisticsCollector()
             ->bindConnectionManager()
             ->addAdminRoutes();
 
@@ -265,4 +272,26 @@ class Factory
 
         return $this;
     }
+
+    protected function registerStatisticsCollector()
+    {
+        if (config('expose.admin.statistics.enable_statistics', true) === false) {
+            return;
+        }
+
+        app()->singleton(StatisticsRepository::class, function () {
+            return app(config('expose.admin.statistics.repository', DatabaseStatisticsRepository::class));
+        });
+
+        app()->singleton(StatisticsCollector::class, function () {
+            return app(DatabaseStatisticsCollector::class);
+        });
+
+        $intervalInSeconds = config('expose.admin.statistics.interval_in_seconds', 3600);
+
+        $this->loop->addPeriodicTimer($intervalInSeconds, function () {
+            app(StatisticsCollector::class)->save();
+        });
+        return $this;
+    }
 }

app/Server/Http/Controllers/Admin/GetStatisticsController.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Server\Http\Controllers\Admin;
+
+use App\Contracts\ConnectionManager;
+use App\Contracts\StatisticsRepository;
+use App\Contracts\UserRepository;
+use App\Server\Configuration;
+use App\Server\Connections\ControlConnection;
+use Illuminate\Http\Request;
+use Ratchet\ConnectionInterface;
+
+class GetStatisticsController extends AdminController
+{
+    protected $keepConnectionOpen = true;
+
+    /** @var StatisticsRepository */
+    protected $statisticsRepository;
+
+    public function __construct(StatisticsRepository $statisticsRepository)
+    {
+        $this->statisticsRepository = $statisticsRepository;
+    }
+
+    public function handle(Request $request, ConnectionInterface $httpConnection)
+    {
+        $from = today()->subWeek()->toDateString();
+        $until = today()->toDateString();
+
+        $this->statisticsRepository->getStatistics($request->get('from', $from), $request->get('until', $until))
+            ->then(function ($statistics) use ($httpConnection) {
+                $httpConnection->send(
+                    respond_json([
+                        'statistics' => $statistics,
+                    ])
+                );
+
+                $httpConnection->close();
+            });
+    }
+}

app/Server/Http/Controllers/ControlMessageController.php

@@ -235,7 +235,12 @@ class ControlMessageController implements MessageComponentInterface
                 if (is_null($user)) {
                     $deferred->reject();
                 } else {
+                    $this->userRepository
+                        ->updateLastSharedAt($user['id'])
+                        ->then(function () use ($deferred, $user) {
                             $deferred->resolve($user);
+                        });
+
                 }
             });
 

app/Server/Http/Controllers/TunnelMessageController.php

@@ -3,6 +3,7 @@
 namespace App\Server\Http\Controllers;
 
 use App\Contracts\ConnectionManager;
+use App\Contracts\StatisticsCollector;
 use App\Http\Controllers\Controller;
 use App\Server\Configuration;
 use App\Server\Connections\ControlConnection;
@@ -27,10 +28,14 @@ class TunnelMessageController extends Controller
 
     protected $modifiers = [];
 
-    public function __construct(ConnectionManager $connectionManager, Configuration $configuration)
+    /** @var StatisticsCollector */
+    protected $statisticsCollector;
+
+    public function __construct(ConnectionManager $connectionManager, StatisticsCollector $statisticsCollector, Configuration $configuration)
     {
         $this->connectionManager = $connectionManager;
         $this->configuration = $configuration;
+        $this->statisticsCollector = $statisticsCollector;
     }
 
     public function handle(Request $request, ConnectionInterface $httpConnection)
@@ -57,6 +62,8 @@ class TunnelMessageController extends Controller
             return;
         }
 
+        $this->statisticsCollector->incomingRequest();
+
         $this->sendRequestToClient($request, $controlConnection, $httpConnection);
     }
 

app/Server/StatisticsCollector/DatabaseStatisticsCollector.php

@@ -0,0 +1,107 @@
+<?php
+
+namespace App\Server\StatisticsCollector;
+
+use App\Contracts\ConnectionManager;
+use App\Contracts\StatisticsCollector;
+use Clue\React\SQLite\DatabaseInterface;
+
+class DatabaseStatisticsCollector implements StatisticsCollector
+{
+    /** @var DatabaseInterface */
+    protected $database;
+
+    /** @var array */
+    protected $sharedPorts = [];
+
+    /** @var array */
+    protected $sharedSites = [];
+
+    /** @var int */
+    protected $requests = 0;
+
+    public function __construct(DatabaseInterface $database,)
+    {
+        $this->database = $database;
+    }
+
+    /**
+     * Flush the stored statistics.
+     *
+     * @return void
+     */
+    public function flush()
+    {
+        $this->sharedPorts = [];
+        $this->sharedSites = [];
+        $this->requests = 0;
+    }
+
+    public function siteShared($authToken = null)
+    {
+        if (! $this->shouldCollectStatistics()) {
+            return;
+        }
+
+        if (! isset($this->sharedSites[$authToken])) {
+            $this->sharedSites[$authToken] = 0;
+        }
+
+        $this->sharedSites[$authToken]++;
+    }
+
+    public function portShared($authToken = null)
+    {
+        if (! $this->shouldCollectStatistics()) {
+            return;
+        }
+
+        if (! isset($this->sharedPorts[$authToken])) {
+            $this->sharedPorts[$authToken] = 0;
+        }
+
+        $this->sharedPorts[$authToken]++;
+    }
+
+    public function incomingRequest()
+    {
+        if (! $this->shouldCollectStatistics()) {
+            return;
+        }
+
+        $this->requests++;
+    }
+
+    public function save()
+    {
+        $sharedSites = 0;
+        collect($this->sharedSites)->map(function ($numSites) use (&$sharedSites) {
+            $sharedSites += $numSites;
+        });
+
+        $sharedPorts = 0;
+        collect($this->sharedPorts)->map(function ($numPorts) use (&$sharedPorts) {
+            $sharedPorts += $numPorts;
+        });
+
+        $this->database->query("
+                    INSERT INTO statistics (timestamp, shared_sites, shared_ports, unique_shared_sites, unique_shared_ports, incoming_requests)
+                    VALUES (:timestamp, :shared_sites, :shared_ports, :unique_shared_sites, :unique_shared_ports, :incoming_requests)
+                ", [
+                'timestamp' => today()->toDateString(),
+                'shared_sites' => $sharedSites,
+                'shared_ports' => $sharedPorts,
+                'unique_shared_sites' => count($this->sharedSites),
+                'unique_shared_ports' => count($this->sharedPorts),
+                'incoming_requests' => $this->requests,
+            ])
+        ->then(function () {
+            $this->flush();
+        });
+    }
+
+    public function shouldCollectStatistics(): bool
+    {
+        return config('expose.admin.statistics.enable_statistics', true);
+    }
+}

app/Server/StatisticsRepository/DatabaseStatisticsRepository.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace App\Server\StatisticsRepository;
+
+use App\Contracts\StatisticsRepository;
+use Clue\React\SQLite\DatabaseInterface;
+use Clue\React\SQLite\Result;
+use React\Promise\Deferred;
+use React\Promise\PromiseInterface;
+
+class DatabaseStatisticsRepository implements StatisticsRepository
+{
+    /** @var DatabaseInterface */
+    protected $database;
+
+    public function __construct(DatabaseInterface $database)
+    {
+        $this->database = $database;
+    }
+
+    public function getStatistics($from, $until): PromiseInterface
+    {
+        $deferred = new Deferred();
+
+        $this->database
+            ->query('SELECT
+                timestamp,
+                SUM(shared_sites) as shared_sites,
+                SUM(shared_ports) as shared_ports,
+                SUM(unique_shared_sites) as unique_shared_sites,
+                SUM(unique_shared_ports) as unique_shared_ports,
+                SUM(incoming_requests) as incoming_requests
+                FROM statistics
+                WHERE
+                `timestamp` >= "' . $from . '" AND `timestamp` <= "' . $until . '"')
+            ->then(function (Result $result) use ($deferred) {
+                $deferred->resolve($result->rows);
+            });
+
+        return $deferred->promise();
+    }
+}

app/Server/UserRepository/DatabaseUserRepository.php

@@ -114,6 +114,19 @@ class DatabaseUserRepository implements UserRepository
         return $deferred->promise();
     }
 
+    public function updateLastSharedAt($id): PromiseInterface
+    {
+        $deferred = new Deferred();
+
+        $this->database
+            ->query("UPDATE users SET last_shared_at = date('now') WHERE id = :id", ["id" => $id])
+            ->then(function (Result $result) use ($deferred) {
+                $deferred->resolve();
+            });
+
+        return $deferred->promise();
+    }
+
     public function getUserByToken(string $authToken): PromiseInterface
     {
         $deferred = new Deferred();

config/expose.php

@@ -327,5 +327,13 @@ return [
 
             'tcp_port_sharing_disabled' => 'TCP port sharing is not available on this Expose server.',
         ],
+
+        'statistics' => [
+            'enable_statistics' => true,
+
+            'interval_in_seconds' => 3600,
+
+            'repository' => \App\Server\StatisticsRepository\DatabaseStatisticsRepository::class,
+        ]
     ],
 ];

database/migrations/06_add_last_shared_at_to_users_table.sql

@@ -0,0 +1 @@
+ALTER TABLE users ADD last_shared_at DATETIME;

database/migrations/07_create_statistics_table.sql

@@ -0,0 +1,9 @@
+CREATE TABLE IF NOT EXISTS statistics (
+     id INTEGER PRIMARY KEY AUTOINCREMENT,
+     timestamp DATE,
+     shared_sites INTEGER,
+     shared_ports INTEGER,
+     unique_shared_sites INTEGER,
+     unique_shared_ports INTEGER,
+     incoming_requests INTEGER
+)