| /** |
| * |
| * 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.bookkeeper.net; |
| |
| import static org.apache.bookkeeper.util.BookKeeperConstants.COLON; |
| |
| import com.fasterxml.jackson.annotation.JsonIgnore; |
| import com.google.common.net.InetAddresses; |
| import java.net.InetSocketAddress; |
| import java.net.UnknownHostException; |
| import java.util.Optional; |
| import org.apache.bookkeeper.proto.BookieAddressResolver; |
| |
| /** |
| * This is a data wrapper class that is an InetSocketAddress, it would use the hostname |
| * provided in constructors directly. |
| * |
| * <p>The string representation of a BookieSocketAddress is : <hostname>:<port> |
| */ |
| public class BookieSocketAddress { |
| |
| // Member fields that make up this class. |
| private final String hostname; |
| private final int port; |
| private final Optional<InetSocketAddress> socketAddress; |
| |
| // Constructor that takes in both a port. |
| public BookieSocketAddress(String hostname, int port) { |
| this.hostname = hostname; |
| this.port = port; |
| /* |
| * if ipaddress is used for bookieid then lets cache InetSocketAddress |
| * otherwise not cache it. If Hostname is used for bookieid, then it is |
| * ok for node to change its ipaddress. But if ipaddress is used for |
| * bookieid then it is invalid scenario if node's ipaddress changes and |
| * nodes HostName is considered static. |
| */ |
| if (InetAddresses.isInetAddress(hostname)) { |
| socketAddress = Optional.of(new InetSocketAddress(hostname, port)); |
| } else { |
| socketAddress = Optional.empty(); |
| } |
| } |
| |
| // Constructor from a String "serialized" version of this class. |
| public BookieSocketAddress(String addr) throws UnknownHostException { |
| String[] parts = addr.split(COLON); |
| if (parts.length < 2) { |
| throw new UnknownHostException(addr); |
| } |
| this.hostname = parts[0]; |
| try { |
| this.port = Integer.parseInt(parts[1]); |
| } catch (NumberFormatException nfe) { |
| throw new UnknownHostException(addr); |
| } |
| if (InetAddresses.isInetAddress(hostname)) { |
| socketAddress = Optional.of(new InetSocketAddress(hostname, port)); |
| } else { |
| socketAddress = Optional.empty(); |
| } |
| } |
| |
| |
| |
| // Public getters |
| public String getHostName() { |
| return hostname; |
| } |
| |
| public int getPort() { |
| return port; |
| } |
| |
| // Method to return an InetSocketAddress for the regular port. |
| @JsonIgnore |
| public InetSocketAddress getSocketAddress() { |
| /* |
| * Return each time a new instance of the InetSocketAddress if hostname |
| * is used as bookieid. If we keep using the same InetSocketAddress |
| * instance, if bookies are advertising hostnames and the IP change, the |
| * BK client will keep forever to try to connect to the old IP. |
| */ |
| return socketAddress.orElseGet(() -> { |
| return new InetSocketAddress(hostname, port); |
| }); |
| } |
| |
| // Return the String "serialized" version of this object. |
| @Override |
| public String toString() { |
| return hostname + COLON + port; |
| } |
| |
| // Implement an equals method comparing two BookiSocketAddress objects. |
| @Override |
| public boolean equals(Object obj) { |
| if (!(obj instanceof BookieSocketAddress)) { |
| return false; |
| } |
| BookieSocketAddress that = (BookieSocketAddress) obj; |
| return this.hostname.equals(that.hostname) && (this.port == that.port); |
| } |
| |
| @Override |
| public int hashCode() { |
| return this.hostname.hashCode() + 13 * this.port; |
| } |
| |
| /** |
| * Create a BookieID in legacy format hostname:port. |
| * @return the BookieID |
| */ |
| public BookieId toBookieId() { |
| return BookieId.parse(this.toString()); |
| } |
| |
| /** |
| * Simple converter from legacy BookieId to a real network address. |
| */ |
| public static final BookieAddressResolver LEGACY_BOOKIEID_RESOLVER = (BookieId b) -> { |
| try { |
| return new BookieSocketAddress(b.toString()); |
| } catch (UnknownHostException err) { |
| throw new BookieAddressResolver.BookieIdNotResolvedException(b, err); |
| } |
| }; |
| |
| /** |
| * Utility for Placement Policies that need to create a dummy BookieId that represents |
| * a given host. |
| * @param hostname the hostname |
| * @return a dummy bookie id, compatible with the BookieSocketAddress#toBookieId, with a 0 tcp port. |
| */ |
| public static BookieId createDummyBookieIdForHostname(String hostname) { |
| return BookieId.parse(hostname + ":0"); |
| } |
| |
| /** |
| * Tells whether a BookieId may be a dummy id. |
| * @param bookieId |
| * @return true if the BookieId looks like it has been generated by |
| * {@link #createDummyBookieIdForHostname(java.lang.String)} |
| */ |
| public static boolean isDummyBookieIdForHostname(BookieId bookieId) { |
| return bookieId.getId().endsWith(":0"); |
| } |
| |
| /** |
| * Use legacy resolver to resolve a bookieId. |
| * @param bookieId id supposed to be generated by |
| * {@link #createDummyBookieIdForHostname(java.lang.String)} |
| * @return the BookieSocketAddress |
| */ |
| public static BookieSocketAddress resolveDummyBookieId(BookieId bookieId) |
| throws BookieAddressResolver.BookieIdNotResolvedException { |
| return LEGACY_BOOKIEID_RESOLVER.resolve(bookieId); |
| } |
| |
| } |