HBASE-12650 Move ServerName to hbase-common module
This commit is contained in:
tedyu
parent
87e4414004
commit
11864c60c7
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@ -0,0 +1,402 @@
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/**
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*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.hbase;
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import java.io.Serializable;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.regex.Pattern;
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import org.apache.hadoop.hbase.classification.InterfaceAudience;
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import org.apache.hadoop.hbase.classification.InterfaceStability;
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import org.apache.hadoop.hbase.exceptions.DeserializationException;
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import org.apache.hadoop.hbase.protobuf.ProtobufMagic;
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import org.apache.hadoop.hbase.protobuf.generated.ZooKeeperProtos;
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import org.apache.hadoop.hbase.util.Addressing;
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import org.apache.hadoop.hbase.util.Bytes;
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import com.google.common.net.InetAddresses;
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import com.google.protobuf.InvalidProtocolBufferException;
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/**
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* Instance of an HBase ServerName.
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* A server name is used uniquely identifying a server instance in a cluster and is made
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* of the combination of hostname, port, and startcode. The startcode distingushes restarted
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* servers on same hostname and port (startcode is usually timestamp of server startup). The
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* {@link #toString()} format of ServerName is safe to use in the filesystem and as znode name
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* up in ZooKeeper. Its format is:
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* <code><hostname> '{@link #SERVERNAME_SEPARATOR}' <port> '{@link #SERVERNAME_SEPARATOR}' <startcode></code>.
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* For example, if hostname is <code>www.example.org</code>, port is <code>1234</code>,
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* and the startcode for the regionserver is <code>1212121212</code>, then
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* the {@link #toString()} would be <code>www.example.org,1234,1212121212</code>.
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*
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* <p>You can obtain a versioned serialized form of this class by calling
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* {@link #getVersionedBytes()}. To deserialize, call {@link #parseVersionedServerName(byte[])}
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*
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* <p>Immutable.
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*/
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@InterfaceAudience.Public
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@InterfaceStability.Evolving
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public class ServerName implements Comparable<ServerName>, Serializable {
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private static final long serialVersionUID = 1367463982557264981L;
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/**
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* Version for this class.
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* Its a short rather than a byte so I can for sure distinguish between this
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* version of this class and the version previous to this which did not have
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* a version.
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*/
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private static final short VERSION = 0;
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static final byte [] VERSION_BYTES = Bytes.toBytes(VERSION);
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/**
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* What to use if no startcode supplied.
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*/
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public static final int NON_STARTCODE = -1;
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/**
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* This character is used as separator between server hostname, port and
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* startcode.
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*/
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public static final String SERVERNAME_SEPARATOR = ",";
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public static final Pattern SERVERNAME_PATTERN =
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Pattern.compile("[^" + SERVERNAME_SEPARATOR + "]+" +
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SERVERNAME_SEPARATOR + Addressing.VALID_PORT_REGEX +
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SERVERNAME_SEPARATOR + Addressing.VALID_PORT_REGEX + "$");
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/**
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* What to use if server name is unknown.
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*/
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public static final String UNKNOWN_SERVERNAME = "#unknown#";
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private final String servername;
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private final String hostnameOnly;
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private final int port;
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private final long startcode;
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/**
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* Cached versioned bytes of this ServerName instance.
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* @see #getVersionedBytes()
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*/
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private byte [] bytes;
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public static final List<ServerName> EMPTY_SERVER_LIST = new ArrayList<ServerName>(0);
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private ServerName(final String hostname, final int port, final long startcode) {
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// Drop the domain is there is one; no need of it in a local cluster. With it, we get long
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// unwieldy names.
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this.hostnameOnly = hostname;
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this.port = port;
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this.startcode = startcode;
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this.servername = getServerName(this.hostnameOnly, port, startcode);
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}
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/**
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* @param hostname
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* @return hostname minus the domain, if there is one (will do pass-through on ip addresses)
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*/
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static String getHostNameMinusDomain(final String hostname) {
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if (InetAddresses.isInetAddress(hostname)) return hostname;
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String [] parts = hostname.split("\\.");
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if (parts == null || parts.length == 0) return hostname;
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return parts[0];
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}
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private ServerName(final String serverName) {
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this(parseHostname(serverName), parsePort(serverName),
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parseStartcode(serverName));
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}
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private ServerName(final String hostAndPort, final long startCode) {
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this(Addressing.parseHostname(hostAndPort),
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Addressing.parsePort(hostAndPort), startCode);
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}
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public static String parseHostname(final String serverName) {
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if (serverName == null || serverName.length() <= 0) {
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throw new IllegalArgumentException("Passed hostname is null or empty");
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}
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if (!Character.isLetterOrDigit(serverName.charAt(0))) {
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throw new IllegalArgumentException("Bad passed hostname, serverName=" + serverName);
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}
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int index = serverName.indexOf(SERVERNAME_SEPARATOR);
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return serverName.substring(0, index);
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}
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public static int parsePort(final String serverName) {
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String [] split = serverName.split(SERVERNAME_SEPARATOR);
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return Integer.parseInt(split[1]);
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}
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public static long parseStartcode(final String serverName) {
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int index = serverName.lastIndexOf(SERVERNAME_SEPARATOR);
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return Long.parseLong(serverName.substring(index + 1));
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}
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/**
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* Retrieve an instance of ServerName.
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* Callers should use the equals method to compare returned instances, though we may return
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* a shared immutable object as an internal optimization.
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*/
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public static ServerName valueOf(final String hostname, final int port, final long startcode) {
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return new ServerName(hostname, port, startcode);
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}
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/**
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* Retrieve an instance of ServerName.
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* Callers should use the equals method to compare returned instances, though we may return
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* a shared immutable object as an internal optimization.
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*/
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public static ServerName valueOf(final String serverName) {
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return new ServerName(serverName);
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}
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/**
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* Retrieve an instance of ServerName.
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* Callers should use the equals method to compare returned instances, though we may return
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* a shared immutable object as an internal optimization.
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*/
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public static ServerName valueOf(final String hostAndPort, final long startCode) {
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return new ServerName(hostAndPort, startCode);
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}
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@Override
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public String toString() {
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return getServerName();
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}
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/**
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* @return Return a SHORT version of {@link ServerName#toString()}, one that has the host only,
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* minus the domain, and the port only -- no start code; the String is for us internally mostly
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* tying threads to their server. Not for external use. It is lossy and will not work in
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* in compares, etc.
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*/
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public String toShortString() {
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return Addressing.createHostAndPortStr(getHostNameMinusDomain(this.hostnameOnly), this.port);
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}
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/**
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* @return {@link #getServerName()} as bytes with a short-sized prefix with
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* the ServerName#VERSION of this class.
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*/
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public synchronized byte [] getVersionedBytes() {
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if (this.bytes == null) {
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this.bytes = Bytes.add(VERSION_BYTES, Bytes.toBytes(getServerName()));
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}
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return this.bytes;
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}
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public String getServerName() {
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return servername;
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}
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public String getHostname() {
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return hostnameOnly;
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}
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public int getPort() {
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return port;
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}
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public long getStartcode() {
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return startcode;
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}
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/**
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* For internal use only.
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* @param hostName
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* @param port
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* @param startcode
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* @return Server name made of the concatenation of hostname, port and
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* startcode formatted as <code><hostname> ',' <port> ',' <startcode></code>
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*/
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static String getServerName(String hostName, int port, long startcode) {
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final StringBuilder name = new StringBuilder(hostName.length() + 1 + 5 + 1 + 13);
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name.append(hostName);
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name.append(SERVERNAME_SEPARATOR);
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name.append(port);
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name.append(SERVERNAME_SEPARATOR);
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name.append(startcode);
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return name.toString();
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}
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/**
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* @param hostAndPort String in form of <hostname> ':' <port>
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* @param startcode
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* @return Server name made of the concatenation of hostname, port and
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* startcode formatted as <code><hostname> ',' <port> ',' <startcode></code>
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*/
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public static String getServerName(final String hostAndPort,
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final long startcode) {
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int index = hostAndPort.indexOf(":");
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if (index <= 0) throw new IllegalArgumentException("Expected <hostname> ':' <port>");
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return getServerName(hostAndPort.substring(0, index),
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Integer.parseInt(hostAndPort.substring(index + 1)), startcode);
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}
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/**
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* @return Hostname and port formatted as described at
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* {@link Addressing#createHostAndPortStr(String, int)}
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*/
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public String getHostAndPort() {
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return Addressing.createHostAndPortStr(this.hostnameOnly, this.port);
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}
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/**
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* @param serverName ServerName in form specified by {@link #getServerName()}
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* @return The server start code parsed from <code>servername</code>
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*/
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public static long getServerStartcodeFromServerName(final String serverName) {
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int index = serverName.lastIndexOf(SERVERNAME_SEPARATOR);
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return Long.parseLong(serverName.substring(index + 1));
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}
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/**
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* Utility method to excise the start code from a server name
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* @param inServerName full server name
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* @return server name less its start code
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*/
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public static String getServerNameLessStartCode(String inServerName) {
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if (inServerName != null && inServerName.length() > 0) {
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int index = inServerName.lastIndexOf(SERVERNAME_SEPARATOR);
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if (index > 0) {
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return inServerName.substring(0, index);
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}
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}
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return inServerName;
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}
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@Override
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public int compareTo(ServerName other) {
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int compare = this.getHostname().compareToIgnoreCase(other.getHostname());
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if (compare != 0) return compare;
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compare = this.getPort() - other.getPort();
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if (compare != 0) return compare;
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return (int)(this.getStartcode() - other.getStartcode());
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}
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@Override
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public int hashCode() {
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return getServerName().hashCode();
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (o == null) return false;
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if (!(o instanceof ServerName)) return false;
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return this.compareTo((ServerName)o) == 0;
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}
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/**
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* @param left
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* @param right
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* @return True if <code>other</code> has same hostname and port.
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*/
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public static boolean isSameHostnameAndPort(final ServerName left,
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final ServerName right) {
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if (left == null) return false;
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if (right == null) return false;
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return left.getHostname().equals(right.getHostname()) &&
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left.getPort() == right.getPort();
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}
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/**
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* Use this method instantiating a {@link ServerName} from bytes
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* gotten from a call to {@link #getVersionedBytes()}. Will take care of the
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* case where bytes were written by an earlier version of hbase.
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* @param versionedBytes Pass bytes gotten from a call to {@link #getVersionedBytes()}
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* @return A ServerName instance.
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* @see #getVersionedBytes()
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*/
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public static ServerName parseVersionedServerName(final byte [] versionedBytes) {
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// Version is a short.
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short version = Bytes.toShort(versionedBytes);
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if (version == VERSION) {
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int length = versionedBytes.length - Bytes.SIZEOF_SHORT;
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return valueOf(Bytes.toString(versionedBytes, Bytes.SIZEOF_SHORT, length));
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}
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// Presume the bytes were written with an old version of hbase and that the
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// bytes are actually a String of the form "'<hostname>' ':' '<port>'".
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return valueOf(Bytes.toString(versionedBytes), NON_STARTCODE);
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}
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/**
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* @param str Either an instance of {@link ServerName#toString()} or a
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* "'<hostname>' ':' '<port>'".
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* @return A ServerName instance.
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*/
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public static ServerName parseServerName(final String str) {
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return SERVERNAME_PATTERN.matcher(str).matches()? valueOf(str) :
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valueOf(str, NON_STARTCODE);
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}
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/**
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* @return true if the String follows the pattern of {@link ServerName#toString()}, false
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* otherwise.
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*/
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public static boolean isFullServerName(final String str){
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if (str == null ||str.isEmpty()) return false;
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return SERVERNAME_PATTERN.matcher(str).matches();
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}
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/**
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* Get a ServerName from the passed in data bytes.
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* @param data Data with a serialize server name in it; can handle the old style
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* servername where servername was host and port. Works too with data that
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* begins w/ the pb 'PBUF' magic and that is then followed by a protobuf that
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* has a serialized {@link ServerName} in it.
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* @return Returns null if <code>data</code> is null else converts passed data
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* to a ServerName instance.
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* @throws DeserializationException
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*/
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public static ServerName parseFrom(final byte [] data) throws DeserializationException {
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if (data == null || data.length <= 0) return null;
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if (ProtobufMagic.isPBMagicPrefix(data)) {
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int prefixLen = ProtobufMagic.lengthOfPBMagic();
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try {
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ZooKeeperProtos.Master rss =
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ZooKeeperProtos.Master.PARSER.parseFrom(data, prefixLen, data.length - prefixLen);
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||||||
|
org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.ServerName sn = rss.getMaster();
|
||||||
|
return valueOf(sn.getHostName(), sn.getPort(), sn.getStartCode());
|
||||||
|
} catch (InvalidProtocolBufferException e) {
|
||||||
|
// A failed parse of the znode is pretty catastrophic. Rather than loop
|
||||||
|
// retrying hoping the bad bytes will changes, and rather than change
|
||||||
|
// the signature on this method to add an IOE which will send ripples all
|
||||||
|
// over the code base, throw a RuntimeException. This should "never" happen.
|
||||||
|
// Fail fast if it does.
|
||||||
|
throw new DeserializationException(e);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
// The str returned could be old style -- pre hbase-1502 -- which was
|
||||||
|
// hostname and port seperated by a colon rather than hostname, port and
|
||||||
|
// startcode delimited by a ','.
|
||||||
|
String str = Bytes.toString(data);
|
||||||
|
int index = str.indexOf(ServerName.SERVERNAME_SEPARATOR);
|
||||||
|
if (index != -1) {
|
||||||
|
// Presume its ServerName serialized with versioned bytes.
|
||||||
|
return ServerName.parseVersionedServerName(data);
|
||||||
|
}
|
||||||
|
// Presume it a hostname:port format.
|
||||||
|
String hostname = Addressing.parseHostname(str);
|
||||||
|
int port = Addressing.parsePort(str);
|
||||||
|
return valueOf(hostname, port, -1L);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,43 @@
|
||||||
|
/**
|
||||||
|
* 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.exceptions;
|
||||||
|
|
||||||
|
import org.apache.hadoop.hbase.classification.InterfaceAudience;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Failed deserialization.
|
||||||
|
*/
|
||||||
|
@InterfaceAudience.Private
|
||||||
|
@SuppressWarnings("serial")
|
||||||
|
public class DeserializationException extends HBaseException {
|
||||||
|
public DeserializationException() {
|
||||||
|
super();
|
||||||
|
}
|
||||||
|
|
||||||
|
public DeserializationException(final String message) {
|
||||||
|
super(message);
|
||||||
|
}
|
||||||
|
|
||||||
|
public DeserializationException(final String message, final Throwable t) {
|
||||||
|
super(message, t);
|
||||||
|
}
|
||||||
|
|
||||||
|
public DeserializationException(final Throwable t) {
|
||||||
|
super(t);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,44 @@
|
||||||
|
/**
|
||||||
|
* 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.exceptions;
|
||||||
|
|
||||||
|
import org.apache.hadoop.hbase.classification.InterfaceAudience;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Base checked exception in HBase.
|
||||||
|
* @see <a href="https://issues.apache.org/jira/browse/HBASE-5796">HBASE-5796</a>
|
||||||
|
*/
|
||||||
|
@SuppressWarnings("serial")
|
||||||
|
@InterfaceAudience.Private
|
||||||
|
public class HBaseException extends Exception {
|
||||||
|
public HBaseException() {
|
||||||
|
super();
|
||||||
|
}
|
||||||
|
|
||||||
|
public HBaseException(final String message) {
|
||||||
|
super(message);
|
||||||
|
}
|
||||||
|
|
||||||
|
public HBaseException(final String message, final Throwable t) {
|
||||||
|
super(message, t);
|
||||||
|
}
|
||||||
|
|
||||||
|
public HBaseException(final Throwable t) {
|
||||||
|
super(t);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,90 @@
|
||||||
|
/**
|
||||||
|
* 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.protobuf;
|
||||||
|
|
||||||
|
import org.apache.hadoop.hbase.classification.InterfaceAudience;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Protobufs utility.
|
||||||
|
*/
|
||||||
|
@edu.umd.cs.findbugs.annotations.SuppressWarnings(value="DP_CREATE_CLASSLOADER_INSIDE_DO_PRIVILEGED",
|
||||||
|
justification="None. Address sometime.")
|
||||||
|
@InterfaceAudience.Private
|
||||||
|
public class ProtobufMagic {
|
||||||
|
|
||||||
|
private ProtobufMagic() {
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Magic we put ahead of a serialized protobuf message.
|
||||||
|
* For example, all znode content is protobuf messages with the below magic
|
||||||
|
* for preamble.
|
||||||
|
*/
|
||||||
|
public static final byte [] PB_MAGIC = new byte [] {'P', 'B', 'U', 'F'};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @param bytes Bytes to check.
|
||||||
|
* @return True if passed <code>bytes</code> has {@link #PB_MAGIC} for a prefix.
|
||||||
|
*/
|
||||||
|
public static boolean isPBMagicPrefix(final byte [] bytes) {
|
||||||
|
if (bytes == null) return false;
|
||||||
|
return isPBMagicPrefix(bytes, 0, bytes.length);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Copied from Bytes.java to here
|
||||||
|
* hbase-common now depends on hbase-protocol
|
||||||
|
* Referencing Bytes.java directly would create circular dependency
|
||||||
|
*/
|
||||||
|
private static int compareTo(byte[] buffer1, int offset1, int length1,
|
||||||
|
byte[] buffer2, int offset2, int length2) {
|
||||||
|
// Short circuit equal case
|
||||||
|
if (buffer1 == buffer2 &&
|
||||||
|
offset1 == offset2 &&
|
||||||
|
length1 == length2) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
// Bring WritableComparator code local
|
||||||
|
int end1 = offset1 + length1;
|
||||||
|
int end2 = offset2 + length2;
|
||||||
|
for (int i = offset1, j = offset2; i < end1 && j < end2; i++, j++) {
|
||||||
|
int a = (buffer1[i] & 0xff);
|
||||||
|
int b = (buffer2[j] & 0xff);
|
||||||
|
if (a != b) {
|
||||||
|
return a - b;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return length1 - length2;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @param bytes Bytes to check.
|
||||||
|
* @return True if passed <code>bytes</code> has {@link #PB_MAGIC} for a prefix.
|
||||||
|
*/
|
||||||
|
public static boolean isPBMagicPrefix(final byte [] bytes, int offset, int len) {
|
||||||
|
if (bytes == null || len < PB_MAGIC.length) return false;
|
||||||
|
return compareTo(PB_MAGIC, 0, PB_MAGIC.length, bytes, offset, PB_MAGIC.length) == 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @return Length of {@link #PB_MAGIC}
|
||||||
|
*/
|
||||||
|
public static int lengthOfPBMagic() {
|
||||||
|
return PB_MAGIC.length;
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue