EdColeman commented on code in PR #2751: URL: https://github.com/apache/accumulo/pull/2751#discussion_r925560342
########## server/base/src/main/java/org/apache/accumulo/server/conf/util/ZooInfoViewer.java: ########## @@ -0,0 +1,540 @@ +/* + * 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.accumulo.server.conf.util; + +import static java.nio.charset.StandardCharsets.UTF_8; +import static org.apache.accumulo.core.Constants.ZINSTANCES; +import static org.apache.accumulo.core.Constants.ZNAMESPACES; +import static org.apache.accumulo.core.Constants.ZNAMESPACE_NAME; +import static org.apache.accumulo.core.Constants.ZROOT; +import static org.apache.accumulo.core.Constants.ZTABLES; +import static org.apache.accumulo.core.Constants.ZTABLE_NAME; +import static org.apache.accumulo.core.Constants.ZTABLE_NAMESPACE; + +import java.io.BufferedWriter; +import java.io.FileNotFoundException; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.OutputStream; +import java.io.OutputStreamWriter; +import java.io.PrintWriter; +import java.time.Instant; +import java.time.ZoneId; +import java.time.ZoneOffset; +import java.time.format.DateTimeFormatter; +import java.util.ArrayList; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.SortedMap; +import java.util.TreeMap; +import java.util.TreeSet; +import java.util.UUID; +import java.util.stream.Collectors; + +import org.apache.accumulo.core.cli.ConfigOpts; +import org.apache.accumulo.core.clientImpl.Namespace; +import org.apache.accumulo.core.conf.SiteConfiguration; +import org.apache.accumulo.core.data.InstanceId; +import org.apache.accumulo.core.data.NamespaceId; +import org.apache.accumulo.core.data.TableId; +import org.apache.accumulo.fate.zookeeper.ZooReader; +import org.apache.accumulo.fate.zookeeper.ZooReaderWriter; +import org.apache.accumulo.fate.zookeeper.ZooUtil; +import org.apache.accumulo.server.ServerContext; +import org.apache.accumulo.server.conf.codec.VersionedProperties; +import org.apache.accumulo.server.conf.store.NamespacePropKey; +import org.apache.accumulo.server.conf.store.SystemPropKey; +import org.apache.accumulo.server.conf.store.TablePropKey; +import org.apache.accumulo.server.conf.store.impl.PropStoreWatcher; +import org.apache.accumulo.server.conf.store.impl.ReadyMonitor; +import org.apache.accumulo.server.conf.store.impl.ZooPropStore; +import org.apache.accumulo.start.spi.KeywordExecutable; +import org.apache.zookeeper.KeeperException; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import com.beust.jcommander.Parameter; +import com.google.auto.service.AutoService; + +import edu.umd.cs.findbugs.annotations.SuppressFBWarnings; + +@AutoService(KeywordExecutable.class) +@SuppressFBWarnings(value = "PATH_TRAVERSAL_OUT", + justification = "app is run in same security context as user providing the filename") +public class ZooInfoViewer implements KeywordExecutable { + public static final DateTimeFormatter tsFormat = + DateTimeFormatter.ISO_OFFSET_DATE_TIME.withZone(ZoneId.from(ZoneOffset.UTC)); + private static final Logger log = LoggerFactory.getLogger(ZooInfoViewer.class); + private final NullWatcher nullWatcher = + new NullWatcher(new ReadyMonitor(ZooInfoViewer.class.getSimpleName(), 20_000L)); + + private static final String INDENT = " "; + + /** + * No-op constructor - provided so ServiceLoader autoload does not consume resources. + */ + public ZooInfoViewer() {} + + public static void main(String[] args) throws Exception { + new ZooInfoViewer().execute(args); + } + + @Override + public String keyword() { + return "zoo-info-viewer"; + } + + @Override + public String description() { + return "view Accumulo instance and property information stored in ZooKeeper"; + } + + @Override + public void execute(String[] args) { + + ZooInfoViewer.Opts opts = new ZooInfoViewer.Opts(); + opts.parseArgs(ZooInfoViewer.class.getName(), args); + + log.info("print ids map: {}", opts.printIdMap); + log.info("print properties: {}", opts.printProps); + log.info("print instances: {}", opts.printInstanceIds); + + ZooReader zooReader = new ZooReaderWriter(opts.getSiteConfiguration()); + + InstanceId iid = getInstanceId(zooReader, opts); + try { + generateReport(iid, opts, zooReader); + } catch (FileNotFoundException ex) { + throw new IllegalStateException("Failed to generate ZooKeeper info report", ex); + } + } + + void generateReport(final InstanceId iid, final ZooInfoViewer.Opts opts, + final ZooReader zooReader) throws FileNotFoundException { + + OutputStream outStream; + + String outfile = opts.getOutfile(); + if (outfile == null || outfile.isEmpty()) { + log.trace("No output file, using stdout."); + outStream = System.out; + } else { + outStream = new FileOutputStream(outfile); + } + + try (PrintWriter writer = + new PrintWriter(new BufferedWriter(new OutputStreamWriter(outStream, UTF_8)))) { + + writer.println("-----------------------------------------------"); + writer.println("Report Time: " + tsFormat.format(Instant.now())); + writer.println("-----------------------------------------------"); + if (opts.printInstanceIds) { + Map<String,InstanceId> instanceMap = readInstancesFromZk(zooReader); + printInstanceIds(instanceMap, writer); + } + + if (opts.printIdMap) { + printIdMapping(iid, zooReader, writer); + } + + if (opts.printProps) { + printProps(iid, zooReader, opts, writer); + } + + writer.println("-----------------------------------------------"); + } + } + + /** + * Get the instanceID from the command line options, or from value stored in HDFS. The search + * order is: + * <ol> + * <li>command line: --instanceId option</li> + * <li>command line: --instanceName option</li> + * <li>HDFS</li> + * </ol> + * + * @param zooReader + * a ZooReader + * @param opts + * the parsed command line options. + * @return an instance id + */ + InstanceId getInstanceId(final ZooReader zooReader, final ZooInfoViewer.Opts opts) { + + if (!opts.instanceId.isEmpty()) { + return InstanceId.of(opts.instanceId); + } + if (!opts.instanceName.isEmpty()) { + Map<String,InstanceId> instanceNameToIdMap = readInstancesFromZk(zooReader); + String instanceName = opts.instanceName; + for (Map.Entry<String,InstanceId> e : instanceNameToIdMap.entrySet()) { + if (e.getKey().equals(instanceName)) { + return e.getValue(); + } + } + throw new IllegalArgumentException( + "Specified instance name '" + instanceName + "' not found in ZooKeeper"); + } + + try (ServerContext context = new ServerContext(SiteConfiguration.auto())) { + return context.getInstanceID(); + } catch (Exception ex) { + throw new IllegalArgumentException( + "Failed to read instance id from HDFS. Instances can be specified on the command line", + ex); + } + } + + Map<NamespaceId,String> getNamespaceIdToNameMap(InstanceId iid, final ZooReader zooReader) { + SortedMap<NamespaceId,String> namespaceToName = new TreeMap<>(); + String zooNsRoot = ZooUtil.getRoot(iid) + ZNAMESPACES; + try { + List<String> nsids = zooReader.getChildren(zooNsRoot); + for (String id : nsids) { + String path = zooNsRoot + "/" + id + ZNAMESPACE_NAME; + String name = new String(zooReader.getData(path), UTF_8); + namespaceToName.put(NamespaceId.of(id), name); + } + } catch (InterruptedException ex) { + Thread.currentThread().interrupt(); + throw new IllegalStateException("Interrupted reading namespace ids from ZooKeeper", ex); + } catch (KeeperException ex) { + throw new IllegalStateException("Failed to read namespace ids from ZooKeeper", ex); + } + return namespaceToName; + } + + private void printProps(final InstanceId iid, final ZooReader zooReader, final Opts opts, + final PrintWriter writer) { + + if (opts.printAllProps()) { + log.info("all: {}", opts.printAllProps()); + } else { + log.info("Filters:"); + log.info("system: {}", opts.printSysProps()); + log.info("namespaces: {} {}", opts.printNamespaceProps(), + opts.getNamespaces().size() > 0 ? opts.getNamespaces() : ""); + log.info("tables: {} {}", opts.printTableProps(), + opts.getTables().size() > 0 ? opts.getTables() : ""); Review Comment: I will defer this for a follow on if someone else thinks it needs to change. -- This is an automated message from the Apache Git Service. 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