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         private final AtomicBoolean includePrivate = new AtomicBoolean(false);
  26         private final AtomicBoolean includeVolatile = new AtomicBoolean(false);
  27
  28         public GetNodeCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier) {
  29                 this.threadPool = MoreExecutors.listeningDecorator(threadPool);
  30                 this.connectionSupplier = connectionSupplier;
  31         }
  32
  33         @Override
  34         public GetNodeCommand opennetRef() {
  35                 giveOpennetRef.set(true);
  36                 return this;
  37         }
  38
  39         @Override
  40         public GetNodeCommand includePrivate() {
  41                 includePrivate.set(true);
  42                 return this;
  43         }
  44
  45         @Override
  46         public GetNodeCommand includeVolatile() {
  47                 includeVolatile.set(true);
  48                 return this;
  49         }
  50
  51         @Override
  52         public ListenableFuture<NodeData> execute() {
  53                 GetNode getNode = new GetNode(new RandomIdentifierGenerator().generate(), giveOpennetRef.get(),
  54                         includePrivate.get(), includeVolatile.get());
  55                 return threadPool.submit(() -> new GetNodeReplySequence().send(getNode).get());
  56         }
  57
  58         private class GetNodeReplySequence extends FcpReplySequence<NodeData> {
  59
  60                 private final AtomicReference<NodeData> nodeData = new AtomicReference<>();
  61
  62                 public GetNodeReplySequence() throws IOException {
  63                         super(threadPool, connectionSupplier.get());
  64                 }
  65
  66                 @Override
  67                 protected boolean isFinished() {
  68                         return nodeData.get() != null;
  69                 }
  70
  71                 @Override
  72                 protected NodeData getResult() {
  73                         return nodeData.get();
  74                 }
  75
  76                 @Override
  77                 protected void consumeNodeData(NodeData nodeData) {
  78                         this.nodeData.set(nodeData);
  79                 }
  80
  81         }
  82
  83 }