Deprecated previews generation

CHANGELOG.md

@@ -4,6 +4,29 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com), and this project adheres to [Semantic Versioning](https://semver.org).
 
+## [Unreleased]
+
+#### Added
+
+* *Nothing*
+
+#### Changed
+
+* *Nothing*
+
+#### Deprecated
+
+* [#428](https://github.com/shlinkio/shlink/issues/428) Deprecated preview-generation feature. It will keep working but it will be removed in Shlink v2.0.0
+
+#### Removed
+
+* *Nothing*
+
+#### Fixed
+
+* *Nothing*
+
+
 ## 1.18.0 - 2019-08-08
 
 #### Added
@@ -55,7 +78,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com), and this
 * [#305](https://github.com/shlinkio/shlink/issues/305) Implemented changes which will allow Shlink to be truly clusterizable.
 * [#262](https://github.com/shlinkio/shlink/issues/262) Increased mutation score to 75%.
 
-### Deprecated
+#### Deprecated
 
 * *Nothing*
 
@@ -86,7 +109,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com), and this
 
 * [#56](https://github.com/shlinkio/shlink/issues/56) Simplified supported cache, requiring APCu always.
 
-### Deprecated
+#### Deprecated
 
 * [#406](https://github.com/shlinkio/shlink/issues/406) Deprecated `PUT /short-urls/{shortCode}` REST endpoint in favor of `PATCH /short-urls/{shortCode}`.
 

README.md

@@ -196,6 +196,8 @@ Those tasks can be performed using shlink's CLI, so it should be easy to schedul
 
     Running this will improve the performance of the `doma.in/abc123/preview` URLs, which return a preview of the site.
 
+    > **Important!** Generating previews is considered deprecated and the feature will be removed in Shlink v2.
+
 * **For shlink older than v1.17.0**: Update IP geolocation database: `/path/to/shlink/bin/cli visit:update-db`
 
     When shlink is installed it downloads a fresh [GeoLite2](https://dev.maxmind.com/geoip/geoip2/geolite2/) db file. Running this command will update this file.
@@ -276,7 +278,7 @@ Available commands:
   short-url:generate          [shortcode:generate|short-code:generate] Generates a short URL for provided long URL and returns it
   short-url:list              [shortcode:list|short-code:list] List all short URLs
   short-url:parse             [shortcode:parse|short-code:parse] Returns the long URL behind a short code
-  short-url:process-previews  [shortcode:process-previews|short-code:process-previews] Processes and generates the previews for every URL, improving performance for later web requests.
+  short-url:process-previews  [shortcode:process-previews|short-code:process-previews] [DEPRECATED] Processes and generates the previews for every URL, improving performance for later web requests.
   short-url:visits            [shortcode:visits|short-code:visits] Returns the detailed visits information for provided short code
  tag
   tag:create                  Creates one or more tags.

config/autoload/preview-generation.global.php

@@ -1,6 +1,7 @@
 <?php
 declare(strict_types=1);
 
+/** @deprecated */
 return [
 
     'preview_generation' => [

docs/swagger/paths/{shortCode}_preview.json

@@ -1,5 +1,6 @@
 {
     "get": {
+        "deprecated": true,
         "operationId": "shortUrlPreview",
         "tags": [
             "URL Shortener"

module/CLI/src/Command/ShortUrl/GeneratePreviewCommand.php

@@ -14,6 +14,7 @@ use Symfony\Component\Console\Style\SymfonyStyle;
 
 use function sprintf;
 
+/** @deprecated */
 class GeneratePreviewCommand extends Command
 {
     public const NAME = 'short-url:process-previews';
@@ -37,7 +38,8 @@ class GeneratePreviewCommand extends Command
             ->setName(self::NAME)
             ->setAliases(self::ALIASES)
             ->setDescription(
-                'Processes and generates the previews for every URL, improving performance for later web requests.'
+                '[DEPRECATED] Processes and generates the previews for every URL, improving performance for later web '
+                . 'requests.'
             );
     }
 

module/Common/src/Exception/PreviewGenerationException.php

@@ -5,6 +5,7 @@ namespace Shlinkio\Shlink\Common\Exception;
 
 use function sprintf;
 
+/** @deprecated */
 class PreviewGenerationException extends RuntimeException
 {
     public static function fromImageError(string $error): self

module/Common/src/Service/PreviewGenerator.php

@@ -11,6 +11,7 @@ use Symfony\Component\Filesystem\Filesystem;
 use function sprintf;
 use function urlencode;
 
+/** @deprecated */
 class PreviewGenerator implements PreviewGeneratorInterface
 {
     /** @var string */

module/Common/src/Service/PreviewGeneratorInterface.php

@@ -5,6 +5,7 @@ namespace Shlinkio\Shlink\Common\Service;
 
 use Shlinkio\Shlink\Common\Exception\PreviewGenerationException;
 
+/** @deprecated */
 interface PreviewGeneratorInterface
 {
     /**

module/Core/config/routes.config.php

@@ -36,14 +36,14 @@ return [
             ],
             'allowed_methods' => [RequestMethod::METHOD_GET],
         ],
+
+        // Deprecated routes
         [
             'name' => 'short-url-preview',
             'path' => '/{shortCode}/preview',
             'middleware' => Action\PreviewAction::class,
             'allowed_methods' => [RequestMethod::METHOD_GET],
         ],
-
-        // Old QR code route. Deprecated
         [
             'name' => 'short-url-qr-code-old',
             'path' => '/qr/{shortCode}[/{size:[0-9]+}]',

module/Core/src/Action/PreviewAction.php

@@ -17,6 +17,7 @@ use Shlinkio\Shlink\Core\Exception\EntityDoesNotExistException;
 use Shlinkio\Shlink\Core\Exception\InvalidShortCodeException;
 use Shlinkio\Shlink\Core\Service\UrlShortenerInterface;
 
+/** @deprecated */
 class PreviewAction implements MiddlewareInterface
 {
     use ResponseUtilsTrait;