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

   1 package net.pterodactylus.fcp.quelaton;
   2
   3 import java.io.IOException;
   4 import java.util.concurrent.ExecutorService;
   5 import java.util.concurrent.atomic.AtomicBoolean;
   6 import java.util.concurrent.atomic.AtomicReference;
   7
   8 import net.pterodactylus.fcp.GetNode;
   9 import net.pterodactylus.fcp.NodeData;
  10
  11 import com.google.common.util.concurrent.ListenableFuture;
  12 import com.google.common.util.concurrent.ListeningExecutorService;
  13 import com.google.common.util.concurrent.MoreExecutors;
  14
  15 /**
  16  * Default {@link GetNodeCommandImpl} implementation based on {@link FcpReplySequence}.
  17  *
  18  * @author <a href="mailto:bombe@freenetproject.org">David ‘Bombe’ Roden</a>
  19  */
  20 public class GetNodeCommandImpl implements GetNodeCommand {
  21
  22         private final ListeningExecutorService threadPool;
  23         private final ConnectionSupplier connectionSupplier;
  24         private final AtomicBoolean giveOpennetRef = new AtomicBoolean(false);
  25
  26         public GetNodeCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier) {
  27                 this.threadPool = MoreExecutors.listeningDecorator(threadPool);
  28                 this.connectionSupplier = connectionSupplier;
  29         }
  30
  31         @Override
  32         public GetNodeCommand opennetRef() {
  33                 giveOpennetRef.set(true);
  34                 return this;
  35         }
  36
  37         @Override
  38         public ListenableFuture<NodeData> execute() {
  39                 GetNode getNode = new GetNode(new RandomIdentifierGenerator().generate(), giveOpennetRef.get(), false, false);
  40                 return threadPool.submit(() -> new GetNodeReplySequence().send(getNode).get());
  41         }
  42
  43         private class GetNodeReplySequence extends FcpReplySequence<NodeData> {
  44
  45                 private final AtomicReference<NodeData> nodeData = new AtomicReference<>();
  46
  47                 public GetNodeReplySequence() throws IOException {
  48                         super(threadPool, connectionSupplier.get());
  49                 }
  50
  51                 @Override
  52                 protected boolean isFinished() {
  53                         return nodeData.get() != null;
  54                 }
  55
  56                 @Override
  57                 protected NodeData getResult() {
  58                         return nodeData.get();
  59                 }
  60
  61                 @Override
  62                 protected void consumeNodeData(NodeData nodeData) {
  63                         this.nodeData.set(nodeData);
  64                 }
  65
  66         }
  67
  68 }