jbertram commented on code in PR #5334:
URL: https://github.com/apache/activemq-artemis/pull/5334#discussion_r1878709166


##########
artemis-server/src/main/java/org/apache/activemq/artemis/core/postoffice/impl/PostOfficeImpl.java:
##########
@@ -1366,17 +1367,36 @@ private static void applyExpiryDelay(Message message, 
AddressSettings settings)
             message.setExpiration(System.currentTimeMillis() + 
expirationOverride);
          }
       } else {
-         long minExpiration = settings.getMinExpiryDelay();
-         long maxExpiration = settings.getMaxExpiryDelay();
-
-         if (maxExpiration != AddressSettings.DEFAULT_MAX_EXPIRY_DELAY && 
(message.getExpiration() == 0 || message.getExpiration() > 
(System.currentTimeMillis() + maxExpiration))) {
-            message.setExpiration(System.currentTimeMillis() + maxExpiration);
-         } else if (minExpiration != AddressSettings.DEFAULT_MIN_EXPIRY_DELAY 
&& message.getExpiration() < (System.currentTimeMillis() + minExpiration)) {
-            message.setExpiration(System.currentTimeMillis() + minExpiration);
+         // if the incoming message has NO expiration then apply the max if 
set and if not set then apply the min if set
+         if (message.getExpiration() == 0) {
+            if (maxExpiration != AddressSettings.DEFAULT_MAX_EXPIRY_DELAY) {
+               if (maxExpiration != 0) {
+                  message.setExpiration(getExpirationToSet(maxExpiration));
+               }
+            } else if (minExpiration != 
AddressSettings.DEFAULT_MIN_EXPIRY_DELAY) {
+               if (minExpiration != 0) {
+                  message.setExpiration(getExpirationToSet(minExpiration));
+               }
+            }
+         } else if (maxExpiration != AddressSettings.DEFAULT_MAX_EXPIRY_DELAY 
&& message.getExpiration() >= (System.currentTimeMillis() + maxExpiration)) {
+            message.setExpiration(getExpirationToSet(maxExpiration));
+         } else if (minExpiration != AddressSettings.DEFAULT_MIN_EXPIRY_DELAY 
&& (minExpiration == 0 || message.getExpiration() < (System.currentTimeMillis() 
+ minExpiration))) {
+            message.setExpiration(getExpirationToSet(minExpiration));

Review Comment:
   Hmmm...So maybe the current behavior of `min-expiry-delay` and 
`max-expiry-delay` is actually correct in a strict semantic interpretation and 
instead of making `0` behave in a special way we should just add a new 
address-setting to strip the expiration from incoming messages so they never 
expire categorically which is the semantic that the Jira is really aimed at.



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