src/main/java/net/pterodactylus/fcp/quelaton/ModifyPeerCommandImpl.java

   1 package net.pterodactylus.fcp.quelaton;
   2
   3 import java.io.IOException;
   4 import java.util.Optional;
   5 import java.util.concurrent.ExecutionException;
   6 import java.util.concurrent.ExecutorService;
   7 import java.util.concurrent.atomic.AtomicBoolean;
   8 import java.util.concurrent.atomic.AtomicReference;
   9
  10 import net.pterodactylus.fcp.ModifyPeer;
  11 import net.pterodactylus.fcp.Peer;
  12 import net.pterodactylus.fcp.UnknownNodeIdentifier;
  13
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import com.google.common.util.concurrent.ListeningExecutorService;
  16 import com.google.common.util.concurrent.MoreExecutors;
  17
  18 /**
  19  * Default {@link ModifyPeerCommand} implementation based on {@link FcpDialog}.
  20  *
  21  * @author <a href="mailto:bombe@freenetproject.org">David ‘Bombe’ Roden</a>
  22  */
  23 public class ModifyPeerCommandImpl implements ModifyPeerCommand {
  24
  25         private final ListeningExecutorService threadPool;
  26         private final ConnectionSupplier connectionSupplier;
  27         private final AtomicReference<String> nodeIdentifier = new AtomicReference<>();
  28         private final AtomicReference<Boolean> enabled = new AtomicReference<>();
  29         private final AtomicReference<Boolean> allowLocalAddresses = new AtomicReference<>();
  30         private final AtomicReference<Boolean> burstOnly = new AtomicReference<>();
  31         private final AtomicReference<Boolean> listenOnly = new AtomicReference<>();
  32         private final AtomicReference<Boolean> ignoreSource = new AtomicReference<>();
  33
  34         public ModifyPeerCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier) {
  35                 this.threadPool = MoreExecutors.listeningDecorator(threadPool);
  36                 this.connectionSupplier = connectionSupplier;
  37         }
  38
  39         @Override
  40         public ModifyPeerCommand enable() {
  41                 enabled.set(true);
  42                 return this;
  43         }
  44
  45         @Override
  46         public ModifyPeerCommand disable() {
  47                 enabled.set(false);
  48                 return this;
  49         }
  50
  51         @Override
  52         public ModifyPeerCommand allowLocalAddresses() {
  53                 allowLocalAddresses.set(true);
  54                 return this;
  55         }
  56
  57         @Override
  58         public ModifyPeerCommand disallowLocalAddresses() {
  59                 allowLocalAddresses.set(false);
  60                 return this;
  61         }
  62
  63         @Override
  64         public ModifyPeerCommand setBurstOnly() {
  65                 burstOnly.set(true);
  66                 return this;
  67         }
  68
  69         @Override
  70         public ModifyPeerCommand clearBurstOnly() {
  71                 burstOnly.set(false);
  72                 return this;
  73         }
  74
  75         @Override
  76         public ModifyPeerCommand setListenOnly() {
  77                 listenOnly.set(true);
  78                 return this;
  79         }
  80
  81         @Override
  82         public ModifyPeerCommand clearListenOnly() {
  83                 listenOnly.set(false);
  84                 return this;
  85         }
  86
  87         @Override
  88         public ModifyPeerCommand ignoreSource() {
  89                 ignoreSource.set(true);
  90                 return this;
  91         }
  92
  93         @Override
  94         public Executable<Optional<Peer>> byName(String name) {
  95                 nodeIdentifier.set(name);
  96                 return this::execute;
  97         }
  98
  99         @Override
 100         public Executable<Optional<Peer>> byIdentity(String nodeIdentity) {
 101                 nodeIdentifier.set(nodeIdentity);
 102                 return this::execute;
 103         }
 104
 105         @Override
 106         public Executable<Optional<Peer>> byHostAndPort(String host, int port) {
 107                 nodeIdentifier.set(String.format("%s:%d", host, port));
 108                 return this::execute;
 109         }
 110
 111         private ListenableFuture<Optional<Peer>> execute() {
 112                 return threadPool.submit(this::executeSequence);
 113         }
 114
 115         private Optional<Peer> executeSequence() throws IOException, ExecutionException, InterruptedException {
 116                 ModifyPeer modifyPeer = new ModifyPeer(new RandomIdentifierGenerator().generate(), nodeIdentifier.get());
 117                 Optional.ofNullable(enabled.get()).ifPresent(enabled -> modifyPeer.setEnabled(enabled));
 118                 Optional.ofNullable(allowLocalAddresses.get()).ifPresent(allowed -> modifyPeer.setAllowLocalAddresses(allowed));
 119                 Optional.ofNullable(burstOnly.get()).ifPresent(burstOnly -> modifyPeer.setBurstOnly(burstOnly));
 120                 Optional.ofNullable(listenOnly.get()).ifPresent(listenOnly -> modifyPeer.setListenOnly(listenOnly));
 121                 Optional.ofNullable(ignoreSource.get()).ifPresent(ignoreSource -> modifyPeer.setIgnoreSource(ignoreSource));
 122                 try (ModifyPeerDialog modifyPeerDialog = new ModifyPeerDialog()) {
 123                         return modifyPeerDialog.send(modifyPeer).get();
 124                 }
 125         }
 126
 127         private class ModifyPeerDialog extends FcpDialog<Optional<Peer>> {
 128
 129                 private final AtomicBoolean finished = new AtomicBoolean();
 130                 private final AtomicReference<Peer> peer = new AtomicReference<>();
 131
 132                 public ModifyPeerDialog() throws IOException {
 133                         super(threadPool, connectionSupplier.get());
 134                 }
 135
 136                 @Override
 137                 protected boolean isFinished() {
 138                         return finished.get();
 139                 }
 140
 141                 @Override
 142                 protected Optional<Peer> getResult() {
 143                         return Optional.ofNullable(peer.get());
 144                 }
 145
 146                 @Override
 147                 protected void consumePeer(Peer peer) {
 148                         this.peer.set(peer);
 149                         finished.set(true);
 150                 }
 151
 152                 @Override
 153                 protected void consumeUnknownNodeIdentifier(UnknownNodeIdentifier unknownNodeIdentifier) {
 154                         finished.set(true);
 155                 }
 156
 157         }
 158
 159 }