closed_by information for issue

src/GitLab.php

@@ -91,10 +91,17 @@ class GitLab
      * @param mixed $projectId project ID or path
      * @param int $issueId issue to close
      * @param string $time time in ISO8601 format
+	 * @param string $author wh closed the issue?
      */
-	public function closeIssue($projectId, $issueId, $time) {
+	public function closeIssue($projectId, $issueId, $time = '', $author = '') {
 		$this->client->api('issues')->update($projectId, $issueId,
-			['state_event' => 'close', 'updated_at' => $time]);
+			[
+				'state_event' => 'close',
+				'updated_at' => $time,
+				'closed_at' => $time,
+				'closed_by_id' => $author,
+				'closed_by' => $author
+			]);
 	}
 
 	/**

src/Migration.php

@@ -143,7 +143,8 @@ class Migration
 
 			// Close issue if Trac ticket was closed.
 			if ($ticket[3]['status'] === 'closed') {
-				$this->gitLab->closeIssue($gitLabProject, $issue['iid'], $dateUpdated);
+				$this->gitLab->closeIssue($gitLabProject, $issue['iid'],
+					$ticket[4][0]['time']['__jsonclass__'][1], $ticket[4][0]['author']);
 			}
 
 		}