Replace UUIDGenerator implementation with Apache licensed code (#4662)

* Replace UUIDGenerator implementation with Apache licensed code

* changelog

Author: adinauer

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 - Add support for Spring Boot 4 and Spring 7 ([#4601](https://github.com/getsentry/sentry-java/pull/4601))
   - NOTE: Our `sentry-opentelemetry-agentless-spring` is not working yet for Spring Boot 4. Please use `sentry-opentelemetry-agent` until OpenTelemetry has support for Spring Boot 4.
+- Replace `UUIDGenerator` implementation with Apache licensed code ([#4662](https://github.com/getsentry/sentry-java/pull/4662))
 
 ## 8.20.0
 

sentry/src/main/java/io/sentry/util/UUIDGenerator.java

@@ -1,26 +1,19 @@
 /*
- * Copyright (c) 2003, 2022, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ * Adapted from: http://github.com/baomidou/dynamic-datasource/blob/bae2677b83abad549e3ddf41b286749515360e7b/dynamic-datasource-spring/src/main/java/com/baomidou/dynamic/datasource/tx/LocalTxUtil.java
  *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
+ * Copyright © 2018 organization baomidou
  *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package io.sentry.util;
@@ -35,36 +28,41 @@ public final class UUIDGenerator {
 
   @SuppressWarnings("NarrowingCompoundAssignment")
   public static long randomHalfLengthUUID() {
-    Random random = SentryRandom.current();
+    Random ng = SentryRandom.current();
     byte[] randomBytes = new byte[8];
-    random.nextBytes(randomBytes);
-    randomBytes[6] &= 0x0f; /* clear version        */
-    randomBytes[6] |= 0x40; /* set to version 4     */
-
+    ng.nextBytes(randomBytes);
+    // clear version
+    randomBytes[6] &= 0x0f;
+    // set to version 4
+    randomBytes[6] |= 0x40;
     long msb = 0;
-
-    for (int i = 0; i < 8; i++) msb = (msb << 8) | (randomBytes[i] & 0xff);
-
+    for (int i = 0; i < 8; i++) {
+      msb = (msb << 8) | (randomBytes[i] & 0xff);
+    }
     return msb;
   }
 
   @SuppressWarnings("NarrowingCompoundAssignment")
   public static UUID randomUUID() {
-    Random random = SentryRandom.current();
+    Random ng = SentryRandom.current();
     byte[] randomBytes = new byte[16];
-    random.nextBytes(randomBytes);
-    randomBytes[6] &= 0x0f; /* clear version        */
-    randomBytes[6] |= 0x40; /* set to version 4     */
-    randomBytes[8] &= 0x3f; /* clear variant        */
-    randomBytes[8] |= (byte) 0x80; /* set to IETF variant  */
-
+    ng.nextBytes(randomBytes);
+    // clear version
+    randomBytes[6] &= 0x0f;
+    // set to version 4
+    randomBytes[6] |= 0x40;
+    // clear variant
+    randomBytes[8] &= 0x3f;
+    // set to IETF variant
+    randomBytes[8] |= 0x80;
     long msb = 0;
     long lsb = 0;
-
-    for (int i = 0; i < 8; i++) msb = (msb << 8) | (randomBytes[i] & 0xff);
-
-    for (int i = 8; i < 16; i++) lsb = (lsb << 8) | (randomBytes[i] & 0xff);
-
+    for (int i = 0; i < 8; i++) {
+      msb = (msb << 8) | (randomBytes[i] & 0xff);
+    }
+    for (int i = 8; i < 16; i++) {
+      lsb = (lsb << 8) | (randomBytes[i] & 0xff);
+    }
     return new UUID(msb, lsb);
   }
 }