Java tutorial
/* * 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.bookkeeper.tools.cli.commands.bookie; import static org.apache.bookkeeper.meta.MetadataDrivers.runFunctionWithRegistrationManager; import com.beust.jcommander.Parameter; import com.google.common.util.concurrent.UncheckedExecutionException; import java.util.concurrent.ExecutionException; import lombok.Setter; import lombok.experimental.Accessors; import org.apache.bookkeeper.bookie.Bookie; import org.apache.bookkeeper.bookie.Cookie; import org.apache.bookkeeper.conf.ServerConfiguration; import org.apache.bookkeeper.meta.exceptions.MetadataException; import org.apache.bookkeeper.tools.cli.helpers.BookieCommand; import org.apache.bookkeeper.tools.framework.CliFlags; import org.apache.bookkeeper.tools.framework.CliSpec; import org.apache.bookkeeper.versioning.Versioned; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Command to format the current server contents. */ public class FormatCommand extends BookieCommand<FormatCommand.Flags> { static final Logger LOG = LoggerFactory.getLogger(FormatCommand.class); private static final String NAME = "format"; private static final String DESC = "Format the current server contents."; public FormatCommand() { this(new Flags()); } public FormatCommand(Flags flags) { super(CliSpec.<Flags>newBuilder().withName(NAME).withDescription(DESC).withFlags(flags).build()); } /** * Flags for format bookie command. */ @Accessors(fluent = true) @Setter public static class Flags extends CliFlags { @Parameter(names = { "-n", "--noninteractive" }, description = "Whether to confirm if old data exists?") private boolean nonInteractive; @Parameter(names = { "-f", "--force" }, description = "If [noninteractive] is specified, then whether" + "to force delete the old data without prompt?") private boolean force; @Parameter(names = { "-d", "--deletecookie" }, description = "Delete its cookie on metadata store.") private boolean deleteCookie; } @Override public boolean apply(ServerConfiguration conf, Flags cmdFlags) { ServerConfiguration bfconf = new ServerConfiguration(conf); boolean result = Bookie.format(bfconf, cmdFlags.nonInteractive, cmdFlags.force); // delete cookie if (cmdFlags.deleteCookie) { try { runFunctionWithRegistrationManager(conf, rm -> { try { Versioned<Cookie> cookie = Cookie.readFromRegistrationManager(rm, bfconf); cookie.getValue().deleteFromRegistrationManager(rm, bfconf, cookie.getVersion()); } catch (Exception e) { throw new UncheckedExecutionException(e.getMessage(), e); } return null; }); } catch (MetadataException | ExecutionException e) { throw new UncheckedExecutionException(e.getMessage(), e); } } return result; } }