review: customizable client

integration-tests/src/main/java/org/apache/polaris/service/it/env/PolarisClient.java

@@ -18,42 +18,47 @@
  */
 package org.apache.polaris.service.it.env;
 
-import static java.util.concurrent.TimeUnit.MINUTES;
+import static org.apache.polaris.service.it.ext.PolarisServerManagerLoader.polarisServerManager;
 
 import com.fasterxml.jackson.annotation.JsonAutoDetect;
 import com.fasterxml.jackson.annotation.PropertyAccessor;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
-import com.fasterxml.jackson.jakarta.rs.json.JacksonJsonProvider;
 import jakarta.ws.rs.client.Client;
-import jakarta.ws.rs.client.ClientBuilder;
+import java.util.Random;
 import org.apache.iceberg.rest.RESTSerializers;
 import org.apache.polaris.core.admin.model.PrincipalWithCredentials;
 
 public final class PolarisClient implements AutoCloseable {
   private final PolarisApiEndpoints endpoints;
   private final Client client;
+  // Use an alphanumeric ID for widest compatibility in HTTP and SQL.
+  // Use MAX_RADIX for shorter output.
+  private final String clientId =
+      Long.toString(Math.abs(new Random().nextLong()), Character.MAX_RADIX);
 
   private PolarisClient(PolarisApiEndpoints endpoints) {
     this.endpoints = endpoints;
 
+    this.client = polarisServerManager().createClient();
+  }
+
+  public static PolarisClient polarisClient(PolarisApiEndpoints endpoints) {
+    return new PolarisClient(endpoints);
+  }
+
+  public static ObjectMapper buildObjectMapper() {
     ObjectMapper mapper = new ObjectMapper();
     mapper.setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY);
     mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
     mapper.setPropertyNamingStrategy(new PropertyNamingStrategies.KebabCaseStrategy());
     RESTSerializers.registerAll(mapper);
-
-    this.client =
-        ClientBuilder.newBuilder()
-            .readTimeout(5, MINUTES)
-            .connectTimeout(1, MINUTES)
-            .register(new JacksonJsonProvider(mapper))
-            .build();
+    return mapper;
   }
 
-  public static PolarisClient polarisClient(PolarisApiEndpoints endpoints) {
-    return new PolarisClient(endpoints);
+  public String newEntityName(String hint) {
+    return polarisServerManager().transformEntityName(hint + "_" + clientId);
   }
 
   public ManagementApi managementApi(String authToken) {

integration-tests/src/main/java/org/apache/polaris/service/it/ext/PolarisIntegrationTestExtension.java

@@ -18,7 +18,8 @@
  */
 package org.apache.polaris.service.it.ext;
 
-import java.util.ServiceLoader;
+import static org.apache.polaris.service.it.ext.PolarisServerManagerLoader.polarisServerManager;
+
 import org.apache.polaris.service.it.env.ClientCredentials;
 import org.apache.polaris.service.it.env.PolarisApiEndpoints;
 import org.apache.polaris.service.it.env.Server;
@@ -34,11 +35,6 @@ public class PolarisIntegrationTestExtension implements ParameterResolver {
   private static final Namespace NAMESPACE =
       Namespace.create(PolarisIntegrationTestExtension.class);
 
-  private static final PolarisServerManager manager =
-      ServiceLoader.load(PolarisServerManager.class)
-          .findFirst()
-          .orElseThrow(() -> new IllegalStateException("PolarisServerManager not found"));
-
   @Override
   public boolean supportsParameter(
       ParameterContext parameterContext, ExtensionContext extensionContext)
@@ -66,7 +62,7 @@ private Env env(ExtensionContext context) {
     ExtensionContext classCtx = classContext(context);
     ExtensionContext.Store store = classCtx.getStore(NAMESPACE);
     return store.getOrComputeIfAbsent(
-        Env.class, (key) -> new Env(manager.serverForContext(classCtx)), Env.class);
+        Env.class, (key) -> new Env(polarisServerManager().serverForContext(classCtx)), Env.class);
   }
 
   private ExtensionContext classContext(ExtensionContext context) {

integration-tests/src/main/java/org/apache/polaris/service/it/ext/PolarisServerManager.java

@@ -18,6 +18,12 @@
  */
 package org.apache.polaris.service.it.ext;
 
+import static java.util.concurrent.TimeUnit.MINUTES;
+import static org.apache.polaris.service.it.env.PolarisClient.buildObjectMapper;
+
+import com.fasterxml.jackson.jakarta.rs.json.JacksonJsonProvider;
+import jakarta.ws.rs.client.Client;
+import jakarta.ws.rs.client.ClientBuilder;
 import org.apache.polaris.service.it.env.Server;
 import org.junit.jupiter.api.extension.ExtensionContext;
 
@@ -31,4 +37,26 @@ public interface PolarisServerManager {
    * the argument to this call is closed.
    */
   Server serverForContext(ExtensionContext context);
+
+  /** Create a new HTTP client for accessing the server targeted by tests. */
+  default Client createClient() {
+    return ClientBuilder.newBuilder()
+        .readTimeout(5, MINUTES)
+        .connectTimeout(1, MINUTES)
+        .register(new JacksonJsonProvider(buildObjectMapper()))
+        .build();
+  }
+
+  /**
+   * Transforms the name of an entity that tests need to create. Implementations may prepend of
+   * append text to the original name, but they should not alter the original name text or add any
+   * characters that have special meaning in Spark SQL, HTTP or Iceberg REST specifications.
+   *
+   * <p>This method will be called for all top-level entities (catalogs, principal, principal
+   * roles), but may not be called for secondary entities (such as catalog roles, namespaces,
+   * tables, etc.).
+   */
+  default String transformEntityName(String name) {
+    return name;
+  }
 }

integration-tests/src/main/java/org/apache/polaris/service/it/ext/PolarisServerManagerLoader.java

@@ -0,0 +1,35 @@
+/*
+ * 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.polaris.service.it.ext;
+
+import java.util.ServiceLoader;
+
+public final class PolarisServerManagerLoader {
+
+  private static final PolarisServerManager manager =
+      ServiceLoader.load(PolarisServerManager.class)
+          .findFirst()
+          .orElseThrow(() -> new IllegalStateException("PolarisServerManager not found"));
+
+  private PolarisServerManagerLoader() {}
+
+  public static PolarisServerManager polarisServerManager() {
+    return manager;
+  }
+}