From 713ccf831d381aaa94734d9ddc835636cf52f21e Mon Sep 17 00:00:00 2001
From: Georgios Andrianakis <geoand@gmail.com>
Date: Wed, 15 Jan 2025 12:58:56 +0200
Subject: [PATCH] Remove the use of UUID in startup code

Follow up of: #45434
---
 .../io/quarkus/vertx/http/runtime/QuarkusErrorHandler.java | 7 +++++--
 .../io/quarkus/vertx/core/runtime/VertxCoreRecorder.java   | 5 ++---
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/QuarkusErrorHandler.java b/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/QuarkusErrorHandler.java
index afbde7e136bff..76ff73fd935d8 100644
--- a/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/QuarkusErrorHandler.java
+++ b/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/QuarkusErrorHandler.java
@@ -46,7 +46,6 @@ public class QuarkusErrorHandler implements Handler<RoutingContext> {
      * we don't want to generate a new UUID each time as it is slowish. Instead, we just generate one based one
      * and then use a counter.
      */
-    private static final String BASE_ID = UUID.randomUUID() + "-";
 
     private static final AtomicLong ERROR_COUNT = new AtomicLong();
 
@@ -148,7 +147,7 @@ public void accept(Throwable throwable) {
             event.response().setStatusCode(event.statusCode() > 0 ? event.statusCode() : 500);
         }
 
-        String uuid = BASE_ID + ERROR_COUNT.incrementAndGet();
+        String uuid = LazyHolder.BASE_ID + ERROR_COUNT.incrementAndGet();
         String details;
         String stack = "";
         Throwable exception = event.failure();
@@ -427,4 +426,8 @@ static String pickFirstSupportedAndAcceptedContentType(RoutingContext context) {
             }
         }
     }
+
+    private static class LazyHolder {
+        private static final String BASE_ID = UUID.randomUUID() + "-";
+    }
 }
diff --git a/extensions/vertx/runtime/src/main/java/io/quarkus/vertx/core/runtime/VertxCoreRecorder.java b/extensions/vertx/runtime/src/main/java/io/quarkus/vertx/core/runtime/VertxCoreRecorder.java
index 15ab4cd34fc98..c28172f0e7567 100644
--- a/extensions/vertx/runtime/src/main/java/io/quarkus/vertx/core/runtime/VertxCoreRecorder.java
+++ b/extensions/vertx/runtime/src/main/java/io/quarkus/vertx/core/runtime/VertxCoreRecorder.java
@@ -15,8 +15,8 @@
 import java.util.Locale;
 import java.util.Map;
 import java.util.Optional;
+import java.util.Random;
 import java.util.Set;
-import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.CountDownLatch;
@@ -395,8 +395,7 @@ public void run() {
     }
 
     private static File getRandomDirectory(File tmp) {
-        long random = Math.abs(UUID.randomUUID().getMostSignificantBits());
-        File cache = new File(tmp, Long.toString(random));
+        File cache = new File(tmp, Long.toString(new Random().nextLong()));
         if (cache.isDirectory()) {
             // Do not reuse an existing directory.
             return getRandomDirectory(tmp);