feat: extend alias to async client

Author: bevzzz

src/main/java/io/weaviate/client6/v1/api/WeaviateClientAsync.java

@@ -4,6 +4,7 @@
 import java.io.IOException;
 import java.util.function.Function;
 
+import io.weaviate.client6.v1.api.alias.WeaviateAliasClientAsync;
 import io.weaviate.client6.v1.api.collections.WeaviateCollectionsClientAsync;
 import io.weaviate.client6.v1.internal.ObjectBuilder;
 import io.weaviate.client6.v1.internal.grpc.DefaultGrpcTransport;
@@ -16,11 +17,13 @@ public class WeaviateClientAsync implements Closeable {
   private final GrpcTransport grpcTransport;
 
   public final WeaviateCollectionsClientAsync collections;
+  public final WeaviateAliasClientAsync alias;
 
   public WeaviateClientAsync(Config config) {
     this.restTransport = new DefaultRestTransport(config.restTransportOptions());
     this.grpcTransport = new DefaultGrpcTransport(config.grpcTransportOptions());
 
+    this.alias = new WeaviateAliasClientAsync(restTransport);
     this.collections = new WeaviateCollectionsClientAsync(restTransport, grpcTransport);
   }
 

src/main/java/io/weaviate/client6/v1/api/alias/WeaviateAliasClientAsync.java

@@ -0,0 +1,50 @@
+package io.weaviate.client6.v1.api.alias;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.CompletableFuture;
+import java.util.function.Function;
+
+import io.weaviate.client6.v1.internal.ObjectBuilder;
+import io.weaviate.client6.v1.internal.rest.RestTransport;
+
+public class WeaviateAliasClientAsync {
+  private final RestTransport restTransport;
+
+  public WeaviateAliasClientAsync(RestTransport restTransport) {
+    this.restTransport = restTransport;
+  }
+
+  public CompletableFuture<Void> create(String collection, String alias) {
+    return create(new Alias(collection, alias));
+  }
+
+  public CompletableFuture<Void> create(Alias alias) {
+    return this.restTransport.performRequestAsync(new CreateAliasRequest(alias), CreateAliasRequest._ENDPOINT);
+  }
+
+  public CompletableFuture<List<Alias>> list() {
+    return list(ListAliasRequest.of());
+  }
+
+  public CompletableFuture<List<Alias>> list(Function<ListAliasRequest.Builder, ObjectBuilder<ListAliasRequest>> fn) {
+    return list(ListAliasRequest.of(fn));
+  }
+
+  private CompletableFuture<List<Alias>> list(ListAliasRequest request) {
+    return this.restTransport.performRequestAsync(request, ListAliasRequest._ENDPOINT);
+  }
+
+  public CompletableFuture<Optional<Alias>> get(String alias) {
+    return this.restTransport.performRequestAsync(new GetAliasRequest(alias), GetAliasRequest._ENDPOINT);
+  }
+
+  public CompletableFuture<Void> update(String alias, String newTargetCollection) {
+    return this.restTransport.performRequestAsync(new UpdateAliasRequest(alias, newTargetCollection),
+        UpdateAliasRequest._ENDPOINT);
+  }
+
+  public CompletableFuture<Void> delete(String alias) {
+    return this.restTransport.performRequestAsync(new DeleteAliasRequest(alias), DeleteAliasRequest._ENDPOINT);
+  }
+}