hachikuji commented on a change in pull request #10094: URL: https://github.com/apache/kafka/pull/10094#discussion_r578813351
########## File path: metadata/src/main/java/org/apache/kafka/metalog/LocalLogManager.java ########## @@ -0,0 +1,378 @@ +/* + * 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.kafka.metalog; + +import org.apache.kafka.common.protocol.ApiMessage; +import org.apache.kafka.common.utils.LogContext; +import org.apache.kafka.common.utils.Time; +import org.apache.kafka.metadata.ApiMessageAndVersion; +import org.apache.kafka.queue.EventQueue; +import org.apache.kafka.queue.KafkaEventQueue; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.AbstractMap.SimpleImmutableEntry; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map.Entry; +import java.util.Objects; +import java.util.TreeMap; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.ExecutionException; +import java.util.concurrent.ThreadLocalRandom; +import java.util.stream.Collectors; + +/** + * The LocalLogManager is a test implementation that relies on the contents of memory. + */ +public final class LocalLogManager implements MetaLogManager, AutoCloseable { Review comment: We have this class already checked in under `metadata/src/test/java`. If it needs to be here, can we just move it? ########## File path: settings.gradle ########## @@ -29,6 +29,7 @@ include 'clients', 'log4j-appender', 'metadata', 'raft', + 'shell', Review comment: I liked @mumrah's suggestion to call this module `metashell`. ########## File path: core/src/main/scala/kafka/server/Server.scala ########## @@ -29,6 +29,7 @@ trait Server { } object Server { + val metadataTopicName = "@metadata" Review comment: Can we use `KafkaRaftServer.MetadataTopic` and remove this? ########## File path: bin/kafka-metadata-shell.sh ########## @@ -0,0 +1,17 @@ +#!/bin/bash +# 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. + +exec $(dirname $0)/kafka-run-class.sh org.apache.kafka.shell.MetadataShell "$@" Review comment: The shell basically becomes a public api with this. I thought I recalled that we were going to do a separate KIP? An alternative would be to locate this under `shell/bin`. Or maybe we can print a message when the tool starts out which emphasizes that this is an experimental tool without any compatibility guarantees. ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org