src/main/java/net/pterodactylus/xdcc/data/Network.java

   1 /*
   2  * XdccDownloader - Network.java - Copyright © 2013 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.xdcc.data;
  19
  20 import static com.google.common.base.Preconditions.checkNotNull;
  21
  22 import java.util.Collection;
  23
  24 import com.google.common.collect.Sets;
  25
  26 /**
  27  * Defines a network.
  28  *
  29  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  30  */
  31 public class Network {
  32
  33         /** The name of the network. */
  34         private final String name;
  35
  36         /** The servers of this network. */
  37         private final Collection<Server> servers = Sets.newHashSet();
  38
  39         /**
  40          * Creates a new network with the given name.
  41          *
  42          * @param name
  43          *              The name of the network
  44          * @throws NullPointerException
  45          *              if {@code name} is {@code null}
  46          */
  47         private Network(String name) throws NullPointerException {
  48                 this.name = checkNotNull(name, "name must not be null");
  49         }
  50
  51         //
  52         // ACCESSORS
  53         //
  54
  55         /**
  56          * Returns the name of this network.
  57          *
  58          * @return The name of this network
  59          */
  60         public String name() {
  61                 return name;
  62         }
  63
  64         /**
  65          * Returns the servers of this network.
  66          *
  67          * @return The servers of this network
  68          */
  69         public Collection<Server> servers() {
  70                 return servers;
  71         }
  72
  73         //
  74         // MUTATORS
  75         //
  76
  77         private void addServer(Server server) {
  78                 servers.add(server);
  79         }
  80
  81         //
  82         // OBJECT METHODS
  83         //
  84
  85         @Override
  86         public boolean equals(Object object) {
  87                 if (!(object instanceof Network)) {
  88                         return false;
  89                 }
  90                 Network network = (Network) object;
  91                 return name().equals(network.name());
  92         }
  93
  94         @Override
  95         public int hashCode() {
  96                 return name().hashCode();
  97         }
  98
  99         @Override
 100         public String toString() {
 101                 return String.format("%s(%d servers)", name(), servers().size());
 102         }
 103
 104         //
 105         // STATIC METHODS
 106         //
 107
 108         /**
 109          * Returns a network builder.
 110          *
 111          * @param name
 112          *              The name of the network to build
 113          * @return A network builder
 114          */
 115         public static NetworkBuilder builder(String name) {
 116                 return new NetworkBuilder(name);
 117         }
 118
 119         /** {@link Network} builder. */
 120         public static class NetworkBuilder {
 121
 122                 /** The network being built. */
 123                 private final Network network;
 124
 125                 /**
 126                  * Creates a new network builder.
 127                  *
 128                  * @param name
 129                  *              The name of the network being built
 130                  */
 131                 private NetworkBuilder(String name) {
 132                         network = new Network(name);
 133                 }
 134
 135                 /**
 136                  * Returns a server builder that will add the created server to this network.
 137                  *
 138                  * @return A server builder
 139                  */
 140                 public ServerBuilder addServer() {
 141                         return new ServerBuilder(this);
 142                 }
 143
 144                 /**
 145                  * Adds the given server to this builder.
 146                  *
 147                  * @param server
 148                  *              The server to add
 149                  * @return This network builder
 150                  */
 151                 private NetworkBuilder addServer(Server server) {
 152                         network.addServer(server);
 153                         return this;
 154                 }
 155
 156                 /**
 157                  * Returns the built network.
 158                  *
 159                  * @return The built network
 160                  */
 161                 public Network build() {
 162                         return network;
 163                 }
 164
 165         }
 166
 167         /** {@link Server} builder. */
 168         public static class ServerBuilder {
 169
 170                 /** The parent network builder. */
 171                 private final NetworkBuilder networkBuilder;
 172
 173                 /** The hostname of the server. */
 174                 private String hostname;
 175
 176                 /** The unencrypted port numbers. */
 177                 private final Collection<Integer> unencryptedPorts = Sets.newHashSet();
 178
 179                 /** The encrypted port numbers. */
 180                 private final Collection<Integer> encryptedPorts = Sets.newHashSet();
 181
 182                 /**
 183                  * Creates a new server builder.
 184                  *
 185                  * @param networkBuilder
 186                  *              The parent network builder
 187                  */
 188                 private ServerBuilder(NetworkBuilder networkBuilder) {
 189                         this.networkBuilder = networkBuilder;
 190                 }
 191
 192                 /**
 193                  * Sets the hostname of the server to build.
 194                  *
 195                  * @param hostname
 196                  *              The hostname of the server
 197                  * @return This server builder
 198                  */
 199                 public ServerBuilder at(String hostname) {
 200                         this.hostname = hostname;
 201                         return this;
 202                 }
 203
 204                 /**
 205                  * Adds the given port number to the list of unencrypted port numbers.
 206                  *
 207                  * @param port
 208                  *              The port number to add
 209                  * @return This server builder
 210                  */
 211                 public ServerBuilder port(int port) {
 212                         unencryptedPorts.add(port);
 213                         return this;
 214                 }
 215
 216                 /**
 217                  * Adds the given port number to the list of encrypted port numbers.
 218                  *
 219                  * @param sslPort
 220                  *              The port number to add
 221                  * @return This server builder
 222                  */
 223                 public ServerBuilder sslPort(int sslPort) {
 224                         encryptedPorts.add(sslPort);
 225                         return this;
 226                 }
 227
 228                 /**
 229                  * Builds the server, adds it to the parent network builder and returns the
 230                  * network builder.
 231                  *
 232                  * @return The network builder with the configured server added
 233                  */
 234                 public NetworkBuilder endServer() {
 235                         return networkBuilder.addServer(build());
 236                 }
 237
 238                 /**
 239                  * Builds the server.
 240                  *
 241                  * @return The built server
 242                  */
 243                 private Server build() {
 244                         return new Server(networkBuilder.network, hostname, unencryptedPorts, encryptedPorts);
 245                 }
 246
 247         }
 248
 249 }