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.AtomicReference;
   8 import java.util.function.Supplier;
   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 Supplier<String> identifierGenerator;
  28         private final AtomicReference<String> nodeIdentifier = new AtomicReference<>();
  29         private final AtomicReference<Boolean> enabled = new AtomicReference<>();
  30         private final AtomicReference<Boolean> allowLocalAddresses = new AtomicReference<>();
  31         private final AtomicReference<Boolean> burstOnly = new AtomicReference<>();
  32         private final AtomicReference<Boolean> listenOnly = new AtomicReference<>();
  33         private final AtomicReference<Boolean> ignoreSource = new AtomicReference<>();
  34
  35         public ModifyPeerCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier, Supplier<String> identifierGenerator) {
  36                 this.threadPool = MoreExecutors.listeningDecorator(threadPool);
  37                 this.connectionSupplier = connectionSupplier;
  38                 this.identifierGenerator = identifierGenerator;
  39         }
  40
  41         @Override
  42         public ModifyPeerCommand enable() {
  43                 enabled.set(true);
  44                 return this;
  45         }
  46
  47         @Override
  48         public ModifyPeerCommand disable() {
  49                 enabled.set(false);
  50                 return this;
  51         }
  52
  53         @Override
  54         public ModifyPeerCommand allowLocalAddresses() {
  55                 allowLocalAddresses.set(true);
  56                 return this;
  57         }
  58
  59         @Override
  60         public ModifyPeerCommand disallowLocalAddresses() {
  61                 allowLocalAddresses.set(false);
  62                 return this;
  63         }
  64
  65         @Override
  66         public ModifyPeerCommand setBurstOnly() {
  67                 burstOnly.set(true);
  68                 return this;
  69         }
  70
  71         @Override
  72         public ModifyPeerCommand clearBurstOnly() {
  73                 burstOnly.set(false);
  74                 return this;
  75         }
  76
  77         @Override
  78         public ModifyPeerCommand setListenOnly() {
  79                 listenOnly.set(true);
  80                 return this;
  81         }
  82
  83         @Override
  84         public ModifyPeerCommand clearListenOnly() {
  85                 listenOnly.set(false);
  86                 return this;
  87         }
  88
  89         @Override
  90         public ModifyPeerCommand ignoreSource() {
  91                 ignoreSource.set(true);
  92                 return this;
  93         }
  94
  95         @Override
  96         public ModifyPeerCommand useSource() {
  97                 ignoreSource.set(false);
  98                 return this;
  99         }
 100
 101         @Override
 102         public Executable<Optional<Peer>> byName(String name) {
 103                 nodeIdentifier.set(name);
 104                 return this::execute;
 105         }
 106
 107         @Override
 108         public Executable<Optional<Peer>> byIdentity(String nodeIdentity) {
 109                 nodeIdentifier.set(nodeIdentity);
 110                 return this::execute;
 111         }
 112
 113         @Override
 114         public Executable<Optional<Peer>> byHostAndPort(String host, int port) {
 115                 nodeIdentifier.set(String.format("%s:%d", host, port));
 116                 return this::execute;
 117         }
 118
 119         private ListenableFuture<Optional<Peer>> execute() {
 120                 return threadPool.submit(this::executeDialog);
 121         }
 122
 123         private Optional<Peer> executeDialog() throws IOException, ExecutionException, InterruptedException {
 124                 ModifyPeer modifyPeer = new ModifyPeer(identifierGenerator.get(), nodeIdentifier.get());
 125                 Optional.ofNullable(enabled.get()).ifPresent(enabled -> modifyPeer.setEnabled(enabled));
 126                 Optional.ofNullable(allowLocalAddresses.get()).ifPresent(allowed -> modifyPeer.setAllowLocalAddresses(allowed));
 127                 Optional.ofNullable(burstOnly.get()).ifPresent(burstOnly -> modifyPeer.setBurstOnly(burstOnly));
 128                 Optional.ofNullable(listenOnly.get()).ifPresent(listenOnly -> modifyPeer.setListenOnly(listenOnly));
 129                 Optional.ofNullable(ignoreSource.get()).ifPresent(ignoreSource -> modifyPeer.setIgnoreSource(ignoreSource));
 130                 try (ModifyPeerDialog modifyPeerDialog = new ModifyPeerDialog()) {
 131                         return modifyPeerDialog.send(modifyPeer).get();
 132                 }
 133         }
 134
 135         private class ModifyPeerDialog extends FcpDialog<Optional<Peer>> {
 136
 137                 public ModifyPeerDialog() throws IOException {
 138                         super(threadPool, connectionSupplier.get(), Optional.<Peer>empty());
 139                 }
 140
 141                 @Override
 142                 protected void consumePeer(Peer peer) {
 143                         setResult(Optional.ofNullable(peer));
 144                 }
 145
 146                 @Override
 147                 protected void consumeUnknownNodeIdentifier(UnknownNodeIdentifier unknownNodeIdentifier) {
 148                         finish();
 149                 }
 150
 151         }
 152
 153 }