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

   1 package net.pterodactylus.fcp.quelaton;
   2
   3 import java.io.IOException;
   4 import java.util.Collection;
   5 import java.util.HashSet;
   6 import java.util.concurrent.ExecutorService;
   7 import java.util.concurrent.Future;
   8 import java.util.concurrent.atomic.AtomicBoolean;
   9
  10 import net.pterodactylus.fcp.EndListPeers;
  11 import net.pterodactylus.fcp.ListPeers;
  12 import net.pterodactylus.fcp.Peer;
  13
  14 import com.google.common.util.concurrent.ListeningExecutorService;
  15 import com.google.common.util.concurrent.MoreExecutors;
  16
  17 /**
  18  * Default {@link ListPeersCommand} implementation based on {@link FcpReplySequence}.
  19  *
  20  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  21  */
  22 public class ListPeersCommandImpl implements ListPeersCommand {
  23
  24         private final ListeningExecutorService threadPool;
  25         private final ConnectionSupplier connectionSupplier;
  26         private final AtomicBoolean includeMetadata = new AtomicBoolean(false);
  27         private final AtomicBoolean includeVolatile = new AtomicBoolean(false);
  28
  29         public ListPeersCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier) {
  30                 this.threadPool = MoreExecutors.listeningDecorator(threadPool);
  31                 this.connectionSupplier = connectionSupplier;
  32         }
  33
  34         @Override
  35         public ListPeersCommand includeMetadata() {
  36                 includeMetadata.set(true);
  37                 return this;
  38         }
  39
  40         @Override
  41         public ListPeersCommand includeVolatile() {
  42                 includeVolatile.set(true);
  43                 return this;
  44         }
  45
  46         @Override
  47         public Future<Collection<Peer>> execute() {
  48                 String identifier = new RandomIdentifierGenerator().generate();
  49                 ListPeers listPeers = new ListPeers(identifier, includeMetadata.get(), includeVolatile.get());
  50                 return threadPool.submit(() -> new ListPeersReplySequence().send(listPeers).get());
  51         }
  52
  53         private class ListPeersReplySequence extends FcpReplySequence<Collection<Peer>> {
  54
  55                 private final Collection<Peer> peers = new HashSet<>();
  56                 private final AtomicBoolean finished = new AtomicBoolean(false);
  57
  58                 public ListPeersReplySequence() throws IOException {
  59                         super(threadPool, connectionSupplier.get());
  60                 }
  61
  62                 @Override
  63                 protected boolean isFinished() {
  64                         return finished.get();
  65                 }
  66
  67                 @Override
  68                 protected Collection<Peer> getResult() {
  69                         return peers;
  70                 }
  71
  72                 @Override
  73                 protected void consumePeer(Peer peer) {
  74                         peers.add(peer);
  75                 }
  76
  77                 @Override
  78                 protected void consumeEndListPeers(EndListPeers endListPeers) {
  79                         finished.set(true);
  80                 }
  81
  82         }
  83
  84 }