| /* |
| * 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.cassandra.tools.nodetool; |
| |
| import static com.google.common.collect.Iterables.toArray; |
| import static org.apache.commons.lang3.StringUtils.join; |
| import io.airlift.command.Arguments; |
| import io.airlift.command.Command; |
| import io.airlift.command.Option; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.cassandra.tools.NodeProbe; |
| import org.apache.cassandra.tools.NodeTool.NodeToolCmd; |
| |
| @Command(name = "snapshot", description = "Take a snapshot of specified keyspaces or a snapshot of the specified table") |
| public class Snapshot extends NodeToolCmd |
| { |
| @Arguments(usage = "[<keyspaces...>]", description = "List of keyspaces. By default, all keyspaces") |
| private List<String> keyspaces = new ArrayList<>(); |
| |
| @Option(title = "table", name = {"-cf", "--column-family", "--table"}, description = "The table name (you must specify one and only one keyspace for using this option)") |
| private String table = null; |
| |
| @Option(title = "tag", name = {"-t", "--tag"}, description = "The name of the snapshot") |
| private String snapshotName = Long.toString(System.currentTimeMillis()); |
| |
| @Option(title = "ktlist", name = { "-kt", "--kt-list", "-kc", "--kc.list" }, description = "The list of Keyspace.table to take snapshot.(you must not specify only keyspace)") |
| private String ktList = null; |
| |
| @Override |
| public void execute(NodeProbe probe) |
| { |
| try |
| { |
| StringBuilder sb = new StringBuilder(); |
| |
| sb.append("Requested creating snapshot(s) for "); |
| |
| // Create a separate path for kclist to avoid breaking of already existing scripts |
| if (null != ktList && !ktList.isEmpty()) |
| { |
| ktList = ktList.replace(" ", ""); |
| if (keyspaces.isEmpty() && null == table) |
| sb.append("[").append(ktList).append("]"); |
| else |
| { |
| throw new IOException( |
| "When specifying the Keyspace columfamily list for a snapshot, you should not specify columnfamily"); |
| } |
| if (!snapshotName.isEmpty()) |
| sb.append(" with snapshot name [").append(snapshotName).append("]"); |
| System.out.println(sb.toString()); |
| probe.takeMultipleTableSnapshot(snapshotName, ktList.split(",")); |
| System.out.println("Snapshot directory: " + snapshotName); |
| } |
| else |
| { |
| if (keyspaces.isEmpty()) |
| sb.append("[all keyspaces]"); |
| else |
| sb.append("[").append(join(keyspaces, ", ")).append("]"); |
| |
| if (!snapshotName.isEmpty()) |
| sb.append(" with snapshot name [").append(snapshotName).append("]"); |
| |
| System.out.println(sb.toString()); |
| |
| probe.takeSnapshot(snapshotName, table, toArray(keyspaces, String.class)); |
| System.out.println("Snapshot directory: " + snapshotName); |
| } |
| } |
| catch (IOException e) |
| { |
| throw new RuntimeException("Error during taking a snapshot", e); |
| } |
| } |
| } |