001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.client;
019
020import java.io.IOException;
021import java.net.URI;
022import org.apache.commons.lang3.StringUtils;
023import org.apache.hadoop.conf.Configuration;
024import org.apache.hadoop.hbase.HConstants;
025import org.apache.hadoop.hbase.security.User;
026import org.apache.yetus.audience.InterfaceAudience;
027import org.slf4j.Logger;
028import org.slf4j.LoggerFactory;
029
030/**
031 * Connection registry creator implementation for creating {@link ZKConnectionRegistry}.
032 */
033@InterfaceAudience.Private
034public class ZKConnectionRegistryURIFactory implements ConnectionRegistryURIFactory {
035
036  private static final Logger LOG = LoggerFactory.getLogger(ZKConnectionRegistryURIFactory.class);
037
038  @Override
039  public ConnectionRegistry create(URI uri, Configuration conf, User user) throws IOException {
040    assert getScheme().equals(uri.getScheme());
041    LOG.debug("connect to hbase cluster with zk quorum='{}' and parent='{}'", uri.getAuthority(),
042      uri.getPath());
043    Configuration c = new Configuration(conf);
044    c.set(HConstants.CLIENT_ZOOKEEPER_QUORUM, uri.getAuthority());
045    c.set(HConstants.ZOOKEEPER_ZNODE_PARENT, uri.getPath());
046    return new ZKConnectionRegistry(c, user);
047  }
048
049  @Override
050  public String getScheme() {
051    return "hbase+zk";
052  }
053
054  @Override
055  public void validate(URI uri) throws IOException {
056    if (StringUtils.isBlank(uri.getAuthority())) {
057      throw new IOException("no zookeeper quorum specified, uri: " + uri);
058    }
059    // TODO: add more check about the zookeeper quorum
060    if (StringUtils.isBlank(uri.getPath())) {
061      throw new IOException("no zookeeper parent path specified, uri: " + uri);
062    }
063  }
064}