POC: add taggable doctrine store

Makefile

@@ -41,11 +41,11 @@ phpunit-integration: vendor
 
 .PHONY: phpunit-integration-postgres
 phpunit-integration-postgres: vendor                                            ## run phpunit integration tests on postgres
-	DB_URL="pdo-pgsql://postgres:postgres@localhost:5432/eventstore?charset=utf8" vendor/bin/phpunit --testsuite=integration
+	DB_URL="pdo-pgsql://postgres:postgres@127.0.0.1:5432/eventstore?charset=utf8" vendor/bin/phpunit --testsuite=integration
 
 .PHONY: phpunit-integration-mysql
 phpunit-integration-mysql: vendor                                               ## run phpunit integration tests on mysql
-	DB_URL="pdo-mysql://root@localhost:3306/eventstore?charset=utf8" vendor/bin/phpunit --testsuite=integration
+	DB_URL="pdo-mysql://root@127.0.0.1:3306/eventstore?charset=utf8" vendor/bin/phpunit --testsuite=integration
 
 .PHONY: phpunit-unit
 phpunit-unit: vendor                                             				## run phpunit unit tests

src/Metadata/Message/MessageHeaderRegistry.php

@@ -11,6 +11,7 @@
 use Patchlevel\EventSourcing\Store\Header\PlayheadHeader;
 use Patchlevel\EventSourcing\Store\Header\RecordedOnHeader;
 use Patchlevel\EventSourcing\Store\Header\StreamNameHeader;
+use Patchlevel\EventSourcing\Store\Header\TagsHeader;
 use Patchlevel\EventSourcing\Store\StreamStartHeader;
 
 use function array_flip;
@@ -85,6 +86,7 @@ public static function createWithInternalHeaders(array $headerNameToClassMap = [
             'newStreamStart' => StreamStartHeader::class,
             'eventId' => EventIdHeader::class,
             'index' => IndexHeader::class,
+            'tags' => TagsHeader::class,
         ];
 
         return new self($headerNameToClassMap + $internalHeaders);

src/Store/Criteria/TagCriterion.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Patchlevel\EventSourcing\Store\Criteria;
+
+use InvalidArgumentException;
+
+use function array_unique;
+use function array_values;
+
+final class TagCriterion
+{
+    /** @var list<string> */
+    public readonly array $tags;
+
+    public function __construct(
+        string ...$tags,
+    ) {
+        $this->tags = array_values(array_unique($tags));
+
+        if ($this->tags === []) {
+            throw new InvalidArgumentException('At least one tag must be provided.');
+        }
+    }
+}

src/Store/Header/TagsHeader.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Patchlevel\EventSourcing\Store\Header;
+
+/** @psalm-immutable */
+class TagsHeader
+{
+    /** @param list<string> $tags */
+    public function __construct(
+        public readonly array $tags,
+    ) {
+    }
+}