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*
* 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.replication;
import com.google.protobuf.ByteString;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.hbase.exceptions.DeserializationException;
import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos;
import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.Strings;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@InterfaceAudience.Private
@InterfaceStability.Stable
public final class ReplicationSerDeHelper {
private static final Log LOG = LogFactory.getLog(ReplicationSerDeHelper.class);
private ReplicationSerDeHelper() {}
/** convert map to TableCFs Object */
public static ZooKeeperProtos.TableCF[] convert(
Map> tableCfs) {
if (tableCfs == null) {
return null;
}
List tableCFList = new ArrayList<>();
ZooKeeperProtos.TableCF.Builder tableCFBuilder = ZooKeeperProtos.TableCF.newBuilder();
for (Map.Entry> entry : tableCfs.entrySet()) {
tableCFBuilder.clear();
tableCFBuilder.setTableName(ProtobufUtil.toProtoTableName(entry.getKey()));
Collection v = entry.getValue();
if (v != null && !v.isEmpty()) {
for (String value : entry.getValue()) {
tableCFBuilder.addFamilies(ByteString.copyFromUtf8(value));
}
}
tableCFList.add(tableCFBuilder.build());
}
return tableCFList.toArray(new ZooKeeperProtos.TableCF[tableCFList.size()]);
}
public static String convertToString(Map> tableCfs) {
if (tableCfs == null) {
return null;
}
return convert(convert(tableCfs));
}
/**
* Convert string to TableCFs Object.
* This is only for read TableCFs information from TableCF node.
* Input String Format: ns1.table1:cf1,cf2;ns2.table2:cfA,cfB;ns3.table3.
* */
public static ZooKeeperProtos.TableCF[] convert(String tableCFsConfig) {
if (tableCFsConfig == null || tableCFsConfig.trim().length() == 0) {
return null;
}
List tableCFList = new ArrayList<>();
ZooKeeperProtos.TableCF.Builder tableCFBuilder = ZooKeeperProtos.TableCF.newBuilder();
String[] tables = tableCFsConfig.split(";");
for (String tab : tables) {
// 1 ignore empty table config
tab = tab.trim();
if (tab.length() == 0) {
continue;
}
// 2 split to "table" and "cf1,cf2"
// for each table: "table#cf1,cf2" or "table"
String[] pair = tab.split(":");
String tabName = pair[0].trim();
if (pair.length > 2 || tabName.length() == 0) {
LOG.info("incorrect format:" + tableCFsConfig);
continue;
}
tableCFBuilder.clear();
// split namespace from tableName
String ns = "default";
String tName = tabName;
String[] dbs = tabName.split("\\.");
if (dbs != null && dbs.length == 2) {
ns = dbs[0];
tName = dbs[1];
}
tableCFBuilder.setTableName(
ProtobufUtil.toProtoTableName(TableName.valueOf(ns, tName)));
// 3 parse "cf1,cf2" part to List
if (pair.length == 2) {
String[] cfsList = pair[1].split(",");
for (String cf : cfsList) {
String cfName = cf.trim();
if (cfName.length() > 0) {
tableCFBuilder.addFamilies(ByteString.copyFromUtf8(cfName));
}
}
}
tableCFList.add(tableCFBuilder.build());
}
return tableCFList.toArray(new ZooKeeperProtos.TableCF[tableCFList.size()]);
}
/**
* Convert TableCFs Object to String.
* Output String Format: ns1.table1:cf1,cf2;ns2.table2:cfA,cfB;table3
* */
public static String convert(ZooKeeperProtos.TableCF[] tableCFs) {
StringBuilder sb = new StringBuilder();
for (int i = 0, n = tableCFs.length; i < n; i++) {
ZooKeeperProtos.TableCF tableCF = tableCFs[i];
String namespace = tableCF.getTableName().getNamespace().toStringUtf8();
if (!Strings.isEmpty(namespace)) {
sb.append(namespace).append(".").
append(tableCF.getTableName().getQualifier().toStringUtf8())
.append(":");
} else {
sb.append(tableCF.getTableName().toString()).append(":");
}
for (int j = 0; j < tableCF.getFamiliesCount(); j++) {
sb.append(tableCF.getFamilies(j).toStringUtf8()).append(",");
}
sb.deleteCharAt(sb.length() - 1).append(";");
}
if (sb.length() > 0) {
sb.deleteCharAt(sb.length() - 1);
}
return sb.toString();
}
/**
* Get TableCF in TableCFs, if not exist, return null.
* */
public static ZooKeeperProtos.TableCF getTableCF(ZooKeeperProtos.TableCF[] tableCFs,
String table) {
for (int i = 0, n = tableCFs.length; i < n; i++) {
ZooKeeperProtos.TableCF tableCF = tableCFs[i];
if (tableCF.getTableName().getQualifier().toStringUtf8().equals(table)) {
return tableCF;
}
}
return null;
}
/**
* Parse bytes into TableCFs.
* It is used for backward compatibility.
* Old format bytes have no PB_MAGIC Header
* */
public static ZooKeeperProtos.TableCF[] parseTableCFs(byte[] bytes) throws IOException {
if (bytes == null) {
return null;
}
return ReplicationSerDeHelper.convert(Bytes.toString(bytes));
}
/**
* Convert tableCFs string into Map.
* */
public static Map> parseTableCFsFromConfig(String tableCFsConfig) {
ZooKeeperProtos.TableCF[] tableCFs = convert(tableCFsConfig);
return convert2Map(tableCFs);
}
/**
* Convert tableCFs Object to Map.
* */
public static Map> convert2Map(ZooKeeperProtos.TableCF[] tableCFs) {
if (tableCFs == null || tableCFs.length == 0) {
return null;
}
Map> tableCFsMap = new HashMap>();
for (int i = 0, n = tableCFs.length; i < n; i++) {
ZooKeeperProtos.TableCF tableCF = tableCFs[i];
List families = new ArrayList<>();
for (int j = 0, m = tableCF.getFamiliesCount(); j < m; j++) {
families.add(tableCF.getFamilies(j).toStringUtf8());
}
if (families.size() > 0) {
tableCFsMap.put(ProtobufUtil.toTableName(tableCF.getTableName()), families);
} else {
tableCFsMap.put(ProtobufUtil.toTableName(tableCF.getTableName()), null);
}
}
return tableCFsMap;
}
/**
* @param bytes Content of a peer znode.
* @return ClusterKey parsed from the passed bytes.
* @throws DeserializationException
*/
public static ReplicationPeerConfig parsePeerFrom(final byte[] bytes)
throws DeserializationException {
if (ProtobufUtil.isPBMagicPrefix(bytes)) {
int pblen = ProtobufUtil.lengthOfPBMagic();
ZooKeeperProtos.ReplicationPeer.Builder builder =
ZooKeeperProtos.ReplicationPeer.newBuilder();
ZooKeeperProtos.ReplicationPeer peer;
try {
ProtobufUtil.mergeFrom(builder, bytes, pblen, bytes.length - pblen);
peer = builder.build();
} catch (IOException e) {
throw new DeserializationException(e);
}
return convert(peer);
} else {
if (bytes.length > 0) {
return new ReplicationPeerConfig().setClusterKey(Bytes.toString(bytes));
}
return new ReplicationPeerConfig().setClusterKey("");
}
}
private static ReplicationPeerConfig convert(ZooKeeperProtos.ReplicationPeer peer) {
ReplicationPeerConfig peerConfig = new ReplicationPeerConfig();
if (peer.hasClusterkey()) {
peerConfig.setClusterKey(peer.getClusterkey());
}
if (peer.hasReplicationEndpointImpl()) {
peerConfig.setReplicationEndpointImpl(peer.getReplicationEndpointImpl());
}
for (HBaseProtos.BytesBytesPair pair : peer.getDataList()) {
peerConfig.getPeerData().put(pair.getFirst().toByteArray(), pair.getSecond().toByteArray());
}
for (HBaseProtos.NameStringPair pair : peer.getConfigurationList()) {
peerConfig.getConfiguration().put(pair.getName(), pair.getValue());
}
Map> tableCFsMap = convert2Map(
peer.getTableCfsList().toArray(new ZooKeeperProtos.TableCF[peer.getTableCfsCount()]));
if (tableCFsMap != null) {
peerConfig.setTableCFsMap(tableCFsMap);
}
if (peer.hasBandwidth()) {
peerConfig.setBandwidth(peer.getBandwidth());
}
return peerConfig;
}
/**
* @param peerConfig
* @return Serialized protobuf of peerConfig with pb magic prefix prepended suitable
* for use as content of a this.peersZNode; i.e. the content of PEER_ID znode under
* /hbase/replication/peers/PEER_ID
*/
public static byte[] toByteArray(final ReplicationPeerConfig peerConfig) {
byte[] bytes = convert(peerConfig).toByteArray();
return ProtobufUtil.prependPBMagic(bytes);
}
private static ZooKeeperProtos.ReplicationPeer convert(ReplicationPeerConfig peerConfig) {
ZooKeeperProtos.ReplicationPeer.Builder builder = ZooKeeperProtos.ReplicationPeer.newBuilder();
if (peerConfig.getClusterKey() != null) {
builder.setClusterkey(peerConfig.getClusterKey());
}
if (peerConfig.getReplicationEndpointImpl() != null) {
builder.setReplicationEndpointImpl(peerConfig.getReplicationEndpointImpl());
}
for (Map.Entry entry : peerConfig.getPeerData().entrySet()) {
builder.addData(HBaseProtos.BytesBytesPair.newBuilder()
.setFirst(ByteString.copyFrom(entry.getKey()))
.setSecond(ByteString.copyFrom(entry.getValue()))
.build());
}
for (Map.Entry entry : peerConfig.getConfiguration().entrySet()) {
builder.addConfiguration(HBaseProtos.NameStringPair.newBuilder()
.setName(entry.getKey())
.setValue(entry.getValue())
.build());
}
ZooKeeperProtos.TableCF[] tableCFs = convert(peerConfig.getTableCFsMap());
if (tableCFs != null) {
for (int i = 0; i < tableCFs.length; i++) {
builder.addTableCfs(tableCFs[i]);
}
}
builder.setBandwidth(peerConfig.getBandwidth());
return builder.build();
}
}
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