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

   1 package net.pterodactylus.fcp.quelaton;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5 import java.net.URL;
   6 import java.util.Optional;
   7 import java.util.concurrent.ExecutionException;
   8 import java.util.concurrent.ExecutorService;
   9 import java.util.concurrent.atomic.AtomicReference;
  10 import java.util.function.Supplier;
  11
  12 import net.pterodactylus.fcp.AddPeer;
  13 import net.pterodactylus.fcp.NodeRef;
  14 import net.pterodactylus.fcp.Peer;
  15 import net.pterodactylus.fcp.ProtocolError;
  16
  17 import com.google.common.util.concurrent.ListenableFuture;
  18 import com.google.common.util.concurrent.ListeningExecutorService;
  19 import com.google.common.util.concurrent.MoreExecutors;
  20
  21 /**
  22  * Default {@link AddPeerCommand} implementation based on {@link FcpDialog}.
  23  *
  24  * @author <a href="mailto:bombe@freenetproject.org">David ‘Bombe’ Roden</a>
  25  */
  26 public class AddPeerCommandImpl implements AddPeerCommand {
  27
  28         private final ListeningExecutorService threadPool;
  29         private final ConnectionSupplier connectionSupplier;
  30         private final Supplier<String> identifierSupplier;
  31         private final AtomicReference<File> file = new AtomicReference<>();
  32         private final AtomicReference<URL> url = new AtomicReference<>();
  33         private final AtomicReference<NodeRef> nodeRef = new AtomicReference<>();
  34
  35         public AddPeerCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier, Supplier<String> identifierSupplier) {
  36                 this.identifierSupplier = identifierSupplier;
  37                 this.threadPool = MoreExecutors.listeningDecorator(threadPool);
  38                 this.connectionSupplier = connectionSupplier;
  39         }
  40
  41         @Override
  42         public Executable<Optional<Peer>> fromFile(File file) {
  43                 this.file.set(file);
  44                 return this::execute;
  45         }
  46
  47         @Override
  48         public Executable<Optional<Peer>> fromURL(URL url) {
  49                 this.url.set(url);
  50                 return this::execute;
  51         }
  52
  53         @Override
  54         public Executable<Optional<Peer>> fromNodeRef(NodeRef nodeRef) {
  55                 this.nodeRef.set(nodeRef);
  56                 return this::execute;
  57         }
  58
  59         private ListenableFuture<Optional<Peer>> execute() {
  60                 return threadPool.submit(this::executeDialog);
  61         }
  62
  63         private Optional<Peer> executeDialog() throws IOException, ExecutionException, InterruptedException {
  64                 AddPeer addPeer;
  65                 if (file.get() != null) {
  66                         addPeer = new AddPeer(identifierSupplier.get(), file.get().getPath());
  67                 } else if (url.get() != null) {
  68                         addPeer = new AddPeer(identifierSupplier.get(), url.get());
  69                 } else {
  70                         addPeer = new AddPeer(identifierSupplier.get(), nodeRef.get());
  71                 }
  72                 try (AddPeerDialog addPeerDialog = new AddPeerDialog()) {
  73                         return addPeerDialog.send(addPeer).get();
  74                 }
  75         }
  76
  77         private class AddPeerDialog extends FcpDialog<Optional<Peer>> {
  78
  79                 public AddPeerDialog() throws IOException {
  80                         super(threadPool, connectionSupplier.get(), Optional.empty());
  81                 }
  82
  83                 @Override
  84                 protected void consumePeer(Peer peer) {
  85                         setResult(Optional.ofNullable(peer));
  86                 }
  87
  88                 @Override
  89                 protected void consumeProtocolError(ProtocolError protocolError) {
  90                         finish();
  91                 }
  92
  93         }
  94
  95 }