src/main/java/net/pterodactylus/fcp/quelaton/GetPluginInfoCommandImpl.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.function.Supplier;
   8
   9 import net.pterodactylus.fcp.GetPluginInfo;
  10 import net.pterodactylus.fcp.PluginInfo;
  11 import net.pterodactylus.fcp.ProtocolError;
  12
  13 import com.google.common.util.concurrent.ListenableFuture;
  14 import com.google.common.util.concurrent.ListeningExecutorService;
  15 import com.google.common.util.concurrent.MoreExecutors;
  16
  17 /**
  18  * Default {@link GetPluginInfoCommand} implementation based on {@link FcpDialog}.
  19  *
  20  * @author <a href="mailto:bombe@freenetproject.org">David ‘Bombe’ Roden</a>
  21  */
  22 public class GetPluginInfoCommandImpl implements GetPluginInfoCommand {
  23
  24         private final ListeningExecutorService threadPool;
  25         private final ConnectionSupplier connectionSupplier;
  26         private final GetPluginInfo getPluginInfo;
  27
  28         public GetPluginInfoCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier, Supplier<String> identifierGenerator) {
  29                 this.threadPool = MoreExecutors.listeningDecorator(threadPool);
  30                 this.connectionSupplier = connectionSupplier;
  31                 getPluginInfo = new GetPluginInfo(identifierGenerator.get());
  32         }
  33
  34         @Override
  35         public GetPluginInfoCommand detailed() {
  36                 getPluginInfo.setDetailed(true);
  37                 return this;
  38         }
  39
  40         @Override
  41         public Executable<Optional<PluginInfo>> plugin(String pluginName) {
  42                 getPluginInfo.setPluginName(pluginName);
  43                 return this::execute;
  44         }
  45
  46         private ListenableFuture<Optional<PluginInfo>> execute() {
  47                 return threadPool.submit(this::executeDialog);
  48         }
  49
  50         private Optional<PluginInfo> executeDialog() throws IOException, ExecutionException, InterruptedException {
  51                 try (GetPluginInfoDialog getPluginInfoDialog = new GetPluginInfoDialog()) {
  52                         return getPluginInfoDialog.send(getPluginInfo).get();
  53                 }
  54         }
  55
  56         private class GetPluginInfoDialog extends FcpDialog<Optional<PluginInfo>> {
  57
  58                 public GetPluginInfoDialog() throws IOException {
  59                         super(threadPool, connectionSupplier.get(), Optional.<PluginInfo>empty());
  60                 }
  61
  62                 @Override
  63                 protected void consumePluginInfo(PluginInfo pluginInfo) {
  64                         setResult(Optional.ofNullable(pluginInfo));
  65                 }
  66
  67                 @Override
  68                 protected void consumeProtocolError(ProtocolError protocolError) {
  69                         finish();
  70                 }
  71
  72         }
  73
  74 }