[camel] 01/02: CAMEL-17486: camel-core - ThrottlePermit compareTo cast to int causes issues. Thanks to Marc Boulanger for the patch and unit test.

[davsclaus]

This is an automated email from the ASF dual-hosted git repository.

davsclaus pushed a commit to branch camel-3.14.x
in repository https://gitbox.apache.org/repos/asf/camel.git

commit 0fc6c3e6e71616b26a9b85112edd0715e221909b
Author: Claus Ibsen <claus.ib...@gmail.com>
AuthorDate: Fri Jan 14 07:19:49 2022 +0100

    CAMEL-17486: camel-core - ThrottlePermit compareTo cast to int causes 
issues. Thanks to Marc Boulanger for the patch and unit test.
---
 .../java/org/apache/camel/processor/Throttler.java |  2 +-
 .../camel/processor/ThrottlerPermitTest.java       | 70 ++++++++++++++++++++++
 2 files changed, 71 insertions(+), 1 deletion(-)

diff --git 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/Throttler.java
 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/Throttler.java
index ccfc609..2a77afa 100644
--- 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/Throttler.java
+++ 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/Throttler.java
@@ -393,7 +393,7 @@ public class Throttler extends AsyncProcessorSupport 
implements Traceable, IdAwa
 
         @Override
         public int compareTo(final Delayed o) {
-            return (int) (getDelay(TimeUnit.MILLISECONDS) - 
o.getDelay(TimeUnit.MILLISECONDS));
+            return Long.compare(getDelay(TimeUnit.MILLISECONDS), 
o.getDelay(TimeUnit.MILLISECONDS));
         }
     }
 
diff --git 
a/core/camel-core/src/test/java/org/apache/camel/processor/ThrottlerPermitTest.java
 
b/core/camel-core/src/test/java/org/apache/camel/processor/ThrottlerPermitTest.java
new file mode 100644
index 0000000..cf5da58
--- /dev/null
+++ 
b/core/camel-core/src/test/java/org/apache/camel/processor/ThrottlerPermitTest.java
@@ -0,0 +1,70 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 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 org.apache.camel.processor;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.concurrent.Delayed;
+import java.util.concurrent.TimeUnit;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+/**
+ * When a Throttler has not been used for longer than {@link 
java.lang.Integer#MAX_VALUE},
+ * casting the result of the {@link ThrottlePermit} comparison to an int 
causes an overflow.
+ * Using a value comparison prevents this issue.
+ */
+public class ThrottlerPermitTest {
+
+    @Test
+    public void testThrottlerPermitWithOldScheduledTime() {
+        long timeMillis = System.currentTimeMillis();
+        // 30 days in the past
+        ThrottlePermit throttlePermitOld = new ThrottlePermit(timeMillis - 
2592000000L);
+        // Now
+        ThrottlePermit throttlePermitNow = new ThrottlePermit(timeMillis);
+        ThrottlePermit throttlePermitNow2 = new ThrottlePermit(timeMillis);
+        // Future
+        ThrottlePermit throttlePermitFuture = new ThrottlePermit(timeMillis + 
1000);
+
+        assertEquals(-1, throttlePermitOld.compareTo(throttlePermitNow));
+        assertEquals(0, throttlePermitNow.compareTo(throttlePermitNow2));
+        assertEquals(1, throttlePermitFuture.compareTo(throttlePermitNow));
+    }
+
+    private static final class ThrottlePermit implements Delayed {
+        private volatile long scheduledTime;
+
+        ThrottlePermit(final long delayMs) {
+            setDelayMs(delayMs);
+        }
+
+        public void setDelayMs(final long delayMs) {
+            this.scheduledTime = System.currentTimeMillis() + delayMs;
+        }
+
+        @Override
+        public long getDelay(final TimeUnit unit) {
+            return unit.convert(scheduledTime - System.currentTimeMillis(), 
TimeUnit.MILLISECONDS);
+        }
+
+        @Override
+        public int compareTo(final Delayed o) {
+            return Long.compare(getDelay(TimeUnit.MILLISECONDS), 
o.getDelay(TimeUnit.MILLISECONDS));
+        }
+    }
+}