rdblue commented on a change in pull request #4184: URL: https://github.com/apache/iceberg/pull/4184#discussion_r813376625
########## File path: core/src/main/java/org/apache/iceberg/rest/responses/RESTCatalogConfigResponse.java ########## @@ -0,0 +1,154 @@ +/* + * 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.iceberg.rest.responses; + +import java.util.Collections; +import java.util.Map; +import org.apache.iceberg.relocated.com.google.common.base.MoreObjects; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; + +/** + * Represents a response to requesting server-side provided configuration for the REST catalog. + * This allows client provided values to be overridden by the server or defaulted if not provided by the client. + * <p> + * This configuration should be fetched with a one time initial HTTP request during the REST catalog initialization. + * The connection used to fetch the configuration should then be disposed and a new http client should be + * created for use with the catalog. + * <p> + * Configuration from the server consists of two sets of key/value pairs. + * <ul> + * <li> defaults - properties that should be used as default configuration </li> + * <li> overrides - properties that should be used to override client configuration </li> + * </ul> + */ +public class RESTCatalogConfigResponse { + + private Map<String, String> defaults; + private Map<String, String> overrides; + + public RESTCatalogConfigResponse() { + // Required for Jackson deserialization + } + + private RESTCatalogConfigResponse(Map<String, String> defaults, Map<String, String> overrides) { + this.defaults = defaults; + this.overrides = overrides; + validate(); + } + + RESTCatalogConfigResponse validate() { + return this; + } + + /** + * Properties that should be used as default configuration. {@code defaults} have the lowest priority + * and should be applied before the client provided configuration. + * + * @return properties that should be used as default configuration + */ + public Map<String, String> defaults() { + return defaults != null ? Maps.newHashMap(defaults) : Collections.emptyMap(); Review comment: Why not use `ImmutableMap.of()` here like in the other places? Similarly, why not just return the defaults without copying? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
