michaelandrepearce commented on a change in pull request #2850: ARTEMIS-2504
implement retroactive addresses
URL: https://github.com/apache/activemq-artemis/pull/2850#discussion_r328398850
##########
File path:
artemis-server/src/main/java/org/apache/activemq/artemis/core/postoffice/impl/PostOfficeImpl.java
##########
@@ -467,6 +478,83 @@ private boolean internalAddressInfo(AddressInfo
addressInfo, boolean reload) thr
}
}
+ private void registerRepositoryListenerForRetroactiveAddress(SimpleString
name) {
+ HierarchicalRepositoryChangeListener repositoryChangeListener = () -> {
+ String prefix = server.getConfiguration().getInternalNamingPrefix();
+ String address =
ResourceNames.decomposeRetroactiveResourceName(prefix, name.toString(),
ResourceNames.ADDRESS);
+ AddressSettings settings =
addressSettingsRepository.getMatch(address);
+ Queue internalQueue =
server.locateQueue(ResourceNames.getRetroactiveResourceName(prefix,
SimpleString.toSimpleString(address), ResourceNames.QUEUE));
+ if (internalQueue != null && internalQueue.getRingSize() !=
settings.getRetroactiveMessageCount()) {
+ internalQueue.setRingSize(settings.getRetroactiveMessageCount());
+ }
+ };
+ addressSettingsRepository.registerListener(repositoryChangeListener);
+
server.getAddressInfo(name).setRepositoryChangeListener(repositoryChangeListener);
+ }
+
+ private void createRetroactiveResources(final SimpleString
retroactiveAddressName, final long retroactiveMessageCount, final boolean
reload) throws Exception {
+ String prefix = server.getConfiguration().getInternalNamingPrefix();
+ final SimpleString internalAddressName =
ResourceNames.getRetroactiveResourceName(prefix, retroactiveAddressName,
ResourceNames.ADDRESS);
+ final SimpleString internalQueueName =
ResourceNames.getRetroactiveResourceName(prefix, retroactiveAddressName,
ResourceNames.QUEUE);
+ final SimpleString internalDivertName =
ResourceNames.getRetroactiveResourceName(prefix, retroactiveAddressName,
ResourceNames.DIVERT);
+
+ if (!reload) {
+ AddressInfo addressInfo = new
AddressInfo(internalAddressName).addRoutingType(RoutingType.ANYCAST).setInternal(true);
+ addAddressInfo(addressInfo);
+ server.createQueue(internalAddressName,
+ RoutingType.ANYCAST,
+ internalQueueName,
+ null,
+ null,
+ true,
+ false,
+ false,
+ false,
+ false,
+ 0,
+ false,
+ false,
+ false,
+ 0,
+ null,
+ false,
+ null,
+ false,
+ 0,
+ 0L,
+ false,
+ 0L,
+ 0L,
+ false,
+ retroactiveMessageCount);
+ }
+ server.deployDivert(new DivertConfiguration()
+ .setName(internalDivertName.toString())
+ .setAddress(retroactiveAddressName.toString())
+ .setExclusive(false)
+
.setForwardingAddress(internalAddressName.toString())
+
.setRoutingType(ComponentConfigurationRoutingType.STRIP));
+ }
+
+ private void removeRetroactiveResources(SimpleString address) throws
Exception {
+ String prefix = server.getConfiguration().getInternalNamingPrefix();
+
+ SimpleString internalDivertName =
ResourceNames.getRetroactiveResourceName(prefix, address, ResourceNames.DIVERT);
Review comment:
Why divert and separate address is needed. Why not have the retro queue
under the original address?
With having separate address will mean message has to be copied rather than
it simply being a message reference to existing message.
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