From c6a054f88de2ab6c40c29659ef2d9847c29c5cdf Mon Sep 17 00:00:00 2001
From: shimon <shimon@appwrite.io>
Date: Thu, 6 Oct 2022 15:33:57 +0300
Subject: [PATCH] redis-syncs

---
 app/config/services.php       | 13 +++++++++++
 app/controllers/api/syncs.php | 44 +++++++++++++++++++++++++++++++++++
 app/workers/syncsIn.php       | 20 ++++++++++++++++
 app/workers/syncsOut.php      | 42 +++++++++++++++++++++++++++++++--
 4 files changed, 117 insertions(+), 2 deletions(-)
 create mode 100644 app/controllers/api/syncs.php

diff --git a/app/config/services.php b/app/config/services.php
index 7369574a80..a1af27aa6e 100644
--- a/app/config/services.php
+++ b/app/config/services.php
@@ -186,4 +186,17 @@ return [
         'optional' => false,
         'icon' => '',
     ],
+    'syncs' => [
+        'key' => 'syncs',
+        'name' => 'syncs',
+        'subtitle' => 'Appwrite\'s cloud regions syncs Endpoint',
+        'description' => 'Syncs Endpoint',
+        'controller' => 'api/syncs.php',
+        'sdk' => false,
+        'docs' => false,
+        'docsUrl' => '',
+        'tests' => true,
+        'optional' => false,
+        'icon' => '',
+    ],
 ];
diff --git a/app/controllers/api/syncs.php b/app/controllers/api/syncs.php
new file mode 100644
index 0000000000..850f07600f
--- /dev/null
+++ b/app/controllers/api/syncs.php
@@ -0,0 +1,44 @@
+<?php
+
+use Ahc\Jwt\JWT;
+use Ahc\Jwt\JWTException;
+use Appwrite\Event\SyncIn;
+use Appwrite\Extend\Exception;
+use Appwrite\Utopia\Request;
+use Appwrite\Utopia\Response;
+use Utopia\App;
+use Utopia\Validator\ArrayList;
+use Utopia\Validator\Text;
+
+App::post('/v1/syncs')
+    ->desc('Purge cache keys')
+    ->label('scope', 'public')
+    ->param('keys', '', new ArrayList(new Text(100), 1000), 'Cache keys')
+    ->inject('request')
+    ->inject('response')
+    ->action(function (array $keys, Request $request, Response $response) {
+
+        if (empty($keys)) {
+            throw new Exception(Exception::KEY_NOT_FOUND);
+        }
+
+        $token = $request->getHeader('authorization');
+        $token = str_replace(["Bearer"," "], "", $token);
+        $jwt = new JWT(App::getEnv('_APP_OPENSSL_KEY_V1'), 'HS256', 900, 10);
+//        try {
+//            $payload = $jwt->decode($token);
+//        } catch (JWTException $error) {
+//            throw new Exception(Exception::USER_JWT_INVALID, 'Failed to verify JWT. ' . $error->getMessage());
+//        }
+
+        $syncIn = new SyncIn();
+        foreach ($keys as $key) {
+            $syncIn
+                ->addKey($key)
+                ->trigger();
+        }
+
+        $response
+            ->setStatusCode(Response::STATUS_CODE_OK)
+            ->send();
+    });
diff --git a/app/workers/syncsIn.php b/app/workers/syncsIn.php
index 8fef867c14..d70e9cafca 100644
--- a/app/workers/syncsIn.php
+++ b/app/workers/syncsIn.php
@@ -1,6 +1,8 @@
 <?php
 
 use Appwrite\Resque\Worker;
+use Utopia\Cache\Adapter\Redis as RedisCache;
+use Utopia\Cache\Cache;
 use Utopia\CLI\Console;
 
 require_once __DIR__ . '/../init.php';
@@ -23,8 +25,26 @@ class SyncsInV1 extends Worker
 
     public function run(): void
     {
+        if (!empty($this->args['key'])) {
+            //var_dump('Purging -> ' . $this->args['key'] . ' from Redis cache');
+            $this->getCache()->purge($this->args['key']);
+        }
     }
 
+    /**
+     * Get  cache
+     * @return RedisCache
+     * @throws Exception
+     */
+    private function getCache(): RedisCache
+    {
+        global $register;
+
+        return new RedisCache($register->get('cache'));
+    }
+
+
+
     public function shutdown(): void
     {
     }
diff --git a/app/workers/syncsOut.php b/app/workers/syncsOut.php
index d9e9260af2..af596e46d4 100644
--- a/app/workers/syncsOut.php
+++ b/app/workers/syncsOut.php
@@ -1,6 +1,8 @@
 <?php
 
+use Ahc\Jwt\JWT;
 use Appwrite\Resque\Worker;
+use Utopia\App;
 use Utopia\CLI\Console;
 
 require_once __DIR__ . '/../init.php';
@@ -12,6 +14,12 @@ class SyncsOutV1 extends Worker
 {
     protected array $errors = [];
 
+    private array $regions = [
+       'fra1' => '172.17.0.1',
+       'nyc1' => '172.17.0.1',
+       'blr1' => '172.17.0.1',
+    ];
+
     public function getName(): string
     {
         return "syncs-out";
@@ -23,8 +31,38 @@ class SyncsOutV1 extends Worker
 
     public function run(): void
     {
-        var_dump('run');
-        var_dump($this->args['key']);
+        //TODO current region env implementation
+        $currentRegion = 'nyc1';
+
+        $data['keys'][] = $this->args['key'];
+        $jwt = new JWT(App::getEnv('_APP_OPENSSL_KEY_V1'), 'HS256', 900, 10);
+        $token = $jwt->encode($data);
+
+        foreach ($this->regions as $region => $host) {
+            if ($currentRegion === $region) {
+                continue;
+            }
+                $ch = curl_init($host . '/v1/syncs');
+                curl_setopt($ch, CURLOPT_HTTPHEADER, [
+                    'Authorization: Bearer ' . $token,
+                    'Content-Type: application/json'
+                ]);
+                curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+                curl_setopt($ch, CURLOPT_TIMEOUT, 5);
+                curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
+                curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
+
+            for ($attempts = 0; $attempts < 6; $attempts++) {
+                    curl_exec($ch);
+                    $responseStatus = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+                if ($responseStatus === 200) {
+                    break;
+                }
+
+                sleep(2);
+            }
+                curl_close($ch);
+        }
     }