BukrosSzabolcs commented on code in PR #1902: URL: https://github.com/apache/zookeeper/pull/1902#discussion_r918839961
########## zookeeper-server/src/main/java/org/apache/zookeeper/server/SnapshotRecursiveSummary.java: ########## @@ -0,0 +1,138 @@ +/** + * 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 + * <p> + * http://www.apache.org/licenses/LICENSE-2.0 + * <p> + * 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.zookeeper.server; + +import org.apache.jute.BinaryInputArchive; +import org.apache.jute.InputArchive; +import org.apache.yetus.audience.InterfaceAudience; +import org.apache.zookeeper.server.persistence.FileSnap; +import org.apache.zookeeper.server.persistence.SnapStream; + +import java.io.File; +import java.io.IOException; +import java.io.InputStream; +import java.util.Collections; +import java.util.HashMap; +import java.util.Map; +import java.util.Set; + +/** + * Recursively processes a snapshot file collecting child node count and summarizes the data size + * below each node. + * "starting_node" defines the node where the recursion starts + * "max_depth" defines the depth where the tool still writes to the output. + * 0 means there is no depth limit, every non-leaf node's stats will be displayed, 1 means it will + * only contain the starting node's and it's children's stats, 2 ads another level and so on. + * This ONLY affects the level of details displayed, NOT the calculation. + */ +@InterfaceAudience.Public public class SnapshotRecursiveSummary { + + /** + * USAGE: SnapsotRecursiveSummary snapshot_file starting_node max_depth + * + */ + public static void main(String[] args) throws Exception { + if (args.length != 3) { + System.err.println(getUsage()); + System.exit(2); + } + int maxDepth = 0; + try { + maxDepth = Integer.valueOf(args[2]).intValue(); + } catch (NumberFormatException e) { + System.err.println(getUsage()); + System.exit(2); + } + + new SnapshotRecursiveSummary().run(args[0], args[1], maxDepth); + } + + public void run(String snapshotFileName, String startingNode, int maxDepth) throws IOException { + File snapshotFile = new File(snapshotFileName); + try (InputStream is = SnapStream.getInputStream(snapshotFile)) { + InputArchive ia = BinaryInputArchive.getArchive(is); + + FileSnap fileSnap = new FileSnap(null); + + DataTree dataTree = new DataTree(); + Map<Long,Integer> sessions = new HashMap<Long,Integer>(); + + fileSnap.deserialize(dataTree, sessions, ia); Review Comment: `BinaryInputArchive.getArchive(is)` creates a new DataInputStream based on the inputStream. The `try()` only closes the inputStream, the DataInputStream is technically never closed. I see this as a non-issue and this is how SnapshotFormatter is written too, so it should be fine like this. -- 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: notifications-unsubscr...@zookeeper.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
