1 files changed, 78 insertions, 0 deletions
diff --git a/MLEB/Translate/src/Cache/PersistentCacheEntry.php b/MLEB/Translate/src/Cache/PersistentCacheEntry.php
new file mode 100644
index 00000000..8cecf8f0
--- /dev/null
+++ b/MLEB/Translate/src/Cache/PersistentCacheEntry.php
@@ -0,0 +1,78 @@
+<?php
+declare( strict_types = 1 );
+
+namespace MediaWiki\Extension\Translate\Cache;
+
+use DateTime;
+use InvalidArgumentException;
+
+/**
+ * Represents a single result from the persistent cache
+ * @author Abijeet Patro
+ * @license GPL-2.0-or-later
+ * @since 2020.12
+ */
+class PersistentCacheEntry {
+	private const MAX_KEY_LENGTH = 255;
+	private const MAX_TAG_LENGTH = 255;
+
+	/** @var string */
+	private $key;
+	/** @var mixed */
+	private $value;
+	/** @var int|null */
+	private $exptime;
+	/** @var string|null */
+	private $tag;
+
+	public function __construct(
+		string $key,
+		$value = null,
+		int $exptime = null,
+		string $tag = null
+	) {
+		if ( strlen( $key ) > self::MAX_KEY_LENGTH ) {
+			throw new InvalidArgumentException(
+				"The length of key: $key is greater than allowed " . self::MAX_KEY_LENGTH
+			);
+		}
+
+		if ( $tag && strlen( $tag ) > self::MAX_TAG_LENGTH ) {
+			throw new InvalidArgumentException(
+				"The length of tag: $tag is greater than allowed " . self::MAX_TAG_LENGTH
+			);
+		}
+
+		$this->key = $key;
+		$this->value = $value;
+		$this->exptime = $exptime;
+		$this->tag = $tag;
+	}
+
+	public function key(): string {
+		return $this->key;
+	}
+
+	/** @return mixed */
+	public function value() {
+		return $this->value;
+	}
+
+	public function exptime(): ?int {
+		return $this->exptime;
+	}
+
+	public function tag(): ?string {
+		return $this->tag;
+	}
+
+	public function hasExpired(): bool {
+		if ( $this->exptime ) {
+			return $this->exptime < ( new DateTime() )->getTimestamp();
+		}
+
+		return false;
+	}
+}
+
+class_alias( PersistentCacheEntry::class, '\MediaWiki\Extensions\Translate\PersistentCacheEntry' );