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 import java.util.function.Supplier;
  10
  11 import net.pterodactylus.fcp.ModifyPeer;
  12 import net.pterodactylus.fcp.Peer;
  13 import net.pterodactylus.fcp.UnknownNodeIdentifier;
  14
  15 import com.google.common.util.concurrent.ListenableFuture;
  16 import com.google.common.util.concurrent.ListeningExecutorService;
  17 import com.google.common.util.concurrent.MoreExecutors;
  18
  19 /**
  20  * Default {@link ModifyPeerCommand} implementation based on {@link FcpDialog}.
  21  *
  22  * @author <a href="mailto:bombe@freenetproject.org">David ‘Bombe’ Roden</a>
  23  */
  24 public class ModifyPeerCommandImpl implements ModifyPeerCommand {
  25
  26         private final ListeningExecutorService threadPool;
  27         private final ConnectionSupplier connectionSupplier;
  28         private final Supplier<String> identifierGenerator;
  29         private final AtomicReference<String> nodeIdentifier = new AtomicReference<>();
  30         private final AtomicReference<Boolean> enabled = new AtomicReference<>();
  31         private final AtomicReference<Boolean> allowLocalAddresses = new AtomicReference<>();
  32         private final AtomicReference<Boolean> burstOnly = new AtomicReference<>();
  33         private final AtomicReference<Boolean> listenOnly = new AtomicReference<>();
  34         private final AtomicReference<Boolean> ignoreSource = new AtomicReference<>();
  35
  36         public ModifyPeerCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier, Supplier<String> identifierGenerator) {
  37                 this.threadPool = MoreExecutors.listeningDecorator(threadPool);
  38                 this.connectionSupplier = connectionSupplier;
  39                 this.identifierGenerator = identifierGenerator;
  40         }
  41
  42         @Override
  43         public ModifyPeerCommand enable() {
  44                 enabled.set(true);
  45                 return this;
  46         }
  47
  48         @Override
  49         public ModifyPeerCommand disable() {
  50                 enabled.set(false);
  51                 return this;
  52         }
  53
  54         @Override
  55         public ModifyPeerCommand allowLocalAddresses() {
  56                 allowLocalAddresses.set(true);
  57                 return this;
  58         }
  59
  60         @Override
  61         public ModifyPeerCommand disallowLocalAddresses() {
  62                 allowLocalAddresses.set(false);
  63                 return this;
  64         }
  65
  66         @Override
  67         public ModifyPeerCommand setBurstOnly() {
  68                 burstOnly.set(true);
  69                 return this;
  70         }
  71
  72         @Override
  73         public ModifyPeerCommand clearBurstOnly() {
  74                 burstOnly.set(false);
  75                 return this;
  76         }
  77
  78         @Override
  79         public ModifyPeerCommand setListenOnly() {
  80                 listenOnly.set(true);
  81                 return this;
  82         }
  83
  84         @Override
  85         public ModifyPeerCommand clearListenOnly() {
  86                 listenOnly.set(false);
  87                 return this;
  88         }
  89
  90         @Override
  91         public ModifyPeerCommand ignoreSource() {
  92                 ignoreSource.set(true);
  93                 return this;
  94         }
  95
  96         @Override
  97         public ModifyPeerCommand useSource() {
  98                 ignoreSource.set(false);
  99                 return this;
 100         }
 101
 102         @Override
 103         public Executable<Optional<Peer>> byName(String name) {
 104                 nodeIdentifier.set(name);
 105                 return this::execute;
 106         }
 107
 108         @Override
 109         public Executable<Optional<Peer>> byIdentity(String nodeIdentity) {
 110                 nodeIdentifier.set(nodeIdentity);
 111                 return this::execute;
 112         }
 113
 114         @Override
 115         public Executable<Optional<Peer>> byHostAndPort(String host, int port) {
 116                 nodeIdentifier.set(String.format("%s:%d", host, port));
 117                 return this::execute;
 118         }
 119
 120         private ListenableFuture<Optional<Peer>> execute() {
 121                 return threadPool.submit(this::executeDialog);
 122         }
 123
 124         private Optional<Peer> executeDialog() throws IOException, ExecutionException, InterruptedException {
 125                 ModifyPeer modifyPeer = new ModifyPeer(identifierGenerator.get(), nodeIdentifier.get());
 126                 Optional.ofNullable(enabled.get()).ifPresent(enabled -> modifyPeer.setEnabled(enabled));
 127                 Optional.ofNullable(allowLocalAddresses.get()).ifPresent(allowed -> modifyPeer.setAllowLocalAddresses(allowed));
 128                 Optional.ofNullable(burstOnly.get()).ifPresent(burstOnly -> modifyPeer.setBurstOnly(burstOnly));
 129                 Optional.ofNullable(listenOnly.get()).ifPresent(listenOnly -> modifyPeer.setListenOnly(listenOnly));
 130                 Optional.ofNullable(ignoreSource.get()).ifPresent(ignoreSource -> modifyPeer.setIgnoreSource(ignoreSource));
 131                 try (ModifyPeerDialog modifyPeerDialog = new ModifyPeerDialog()) {
 132                         return modifyPeerDialog.send(modifyPeer).get();
 133                 }
 134         }
 135
 136         private class ModifyPeerDialog extends FcpDialog<Optional<Peer>> {
 137
 138                 private final AtomicBoolean finished = new AtomicBoolean();
 139                 private final AtomicReference<Peer> peer = new AtomicReference<>();
 140
 141                 public ModifyPeerDialog() throws IOException {
 142                         super(threadPool, connectionSupplier.get());
 143                 }
 144
 145                 @Override
 146                 protected boolean isFinished() {
 147                         return finished.get();
 148                 }
 149
 150                 @Override
 151                 protected Optional<Peer> getResult() {
 152                         return Optional.ofNullable(peer.get());
 153                 }
 154
 155                 @Override
 156                 protected void consumePeer(Peer peer) {
 157                         this.peer.set(peer);
 158                         finished.set(true);
 159                 }
 160
 161                 @Override
 162                 protected void consumeUnknownNodeIdentifier(UnknownNodeIdentifier unknownNodeIdentifier) {
 163                         finished.set(true);
 164                 }
 165
 166         }
 167
 168 }