Deprecate `io.servicetalk.client.api.internal.DefaultPartitionedClien…

…tGroup` (#2305)

Motivation:

#2131 and #2267 deprecates partitioned http client and classes required
for its impl, but `DefaultPartitionedClientGroup` is still not
deprecated.

Modifications:

- Deprecate
`io.servicetalk.client.api.internal.DefaultPartitionedClientGroup`;

Result:

All (hopefully) classes related to "partitioned" client are deprecated
now.

Signed-off-by: Idel Pivnitskiy <idel.pivnitskiy@apple.com>

servicetalk-client-api-internal/src/main/java/io/servicetalk/client/api/internal/DefaultPartitionedClientGroup.java

@@ -60,7 +60,11 @@
  * @param <U> the type of address before resolution (unresolved address)
  * @param <R> the type of address after resolution (resolved address)
  * @param <Client> the type of client to connect to the partitions
+ * @deprecated We are unaware of anyone using "partition" feature and plan to remove it in future releases.
+ * If you depend on it, consider using {@link ClientGroup} as an alternative or reach out to the maintainers describing
+ * the use-case.
  */
+@Deprecated // FIXME: 0.43 - remove deprecated class
 public final class DefaultPartitionedClientGroup<U, R, Client extends ListenableAsyncCloseable>
         implements ClientGroup<PartitionAttributes, Client> {
 
@@ -69,7 +73,11 @@ public final class DefaultPartitionedClientGroup<U, R, Client extends Listenable
      * @param <U> the type of address before resolution (unresolved address)
      * @param <R> the type of address after resolution (resolved address)
      * @param <Client> the type of client to connect to the partitions
+     * @deprecated We are unaware of anyone using "partition" feature and plan to remove it in future releases.
+     * If you depend on it, consider using {@link ClientGroup} as an alternative or reach out to the maintainers
+     * describing the use-case.
      */
+    @Deprecated
     @FunctionalInterface
     public interface PartitionedClientFactory<U, R, Client> {
         /**

servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/DefaultPartitionedHttpClientBuilder.java

@@ -70,6 +70,7 @@
 import static java.util.Objects.requireNonNull;
 import static java.util.function.Function.identity;
 
+@Deprecated // FIXME: 0.43 - remove deprecated class
 final class DefaultPartitionedHttpClientBuilder<U, R> implements PartitionedHttpClientBuilder<U, R> {
     private static final Logger LOGGER = LoggerFactory.getLogger(DefaultPartitionedHttpClientBuilder.class);