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Server functionality for HBase
/*
* 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.hadoop.hbase.snapshot;
import java.util.Arrays;
import java.util.Locale;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.SnapshotDescription;
import org.apache.hadoop.hbase.client.SnapshotType;
import org.apache.hadoop.hbase.util.AbstractHBaseTool;
import org.apache.yetus.audience.InterfaceAudience;
import org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLine;
/**
* This is a command line class that will snapshot a given table.
*/
@InterfaceAudience.Private
public class CreateSnapshot extends AbstractHBaseTool {
private SnapshotType snapshotType = SnapshotType.FLUSH;
private TableName tableName = null;
private String snapshotName = null;
public static void main(String[] args) {
new CreateSnapshot().doStaticMain(args);
}
@Override
protected void addOptions() {
this.addRequiredOptWithArg("t", "table", "The name of the table");
this.addRequiredOptWithArg("n", "name", "The name of the created snapshot");
this.addOptWithArg("s", "snapshot_type", "Snapshot Type. FLUSH is default. Posible values are "
+ Arrays.toString(SnapshotType.values()));
}
@Override
protected void processOptions(CommandLine cmd) {
this.tableName = TableName.valueOf(cmd.getOptionValue('t'));
this.snapshotName = cmd.getOptionValue('n');
String snapshotTypeName = cmd.getOptionValue('s');
if (snapshotTypeName != null) {
snapshotTypeName = snapshotTypeName.toUpperCase(Locale.ROOT);
this.snapshotType = SnapshotType.valueOf(snapshotTypeName);
}
}
@Override
protected int doWork() throws Exception {
try (Connection connection = ConnectionFactory.createConnection(getConf());
Admin admin = connection.getAdmin()) {
admin.snapshot(new SnapshotDescription(snapshotName, tableName, snapshotType));
} catch (Exception e) {
System.err.println("failed to take the snapshot: " + e.getMessage());
return -1;
}
return 0;
}
}