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

   1 package net.pterodactylus.fcp.quelaton;
   2
   3 import java.io.IOException;
   4 import java.util.concurrent.ExecutionException;
   5 import java.util.concurrent.ExecutorService;
   6 import java.util.concurrent.atomic.AtomicBoolean;
   7
   8 import net.pterodactylus.fcp.PluginRemoved;
   9 import net.pterodactylus.fcp.ProtocolError;
  10 import net.pterodactylus.fcp.RemovePlugin;
  11
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import com.google.common.util.concurrent.ListeningExecutorService;
  14 import com.google.common.util.concurrent.MoreExecutors;
  15
  16 /**
  17  * Default {@link RemovePluginCommand} implementation based on {@link FcpDialog}.
  18  *
  19  * @author <a href="mailto:bombe@freenetproject.org">David ‘Bombe’ Roden</a>
  20  */
  21 public class RemovePluginCommandImpl implements RemovePluginCommand {
  22
  23         private static final RandomIdentifierGenerator IDENTIFIER = new RandomIdentifierGenerator();
  24         private final ListeningExecutorService threadPool;
  25         private final ConnectionSupplier connectionSupplier;
  26         private final RemovePlugin removePlugin = new RemovePlugin(IDENTIFIER.generate());
  27
  28         public RemovePluginCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier) {
  29                 this.threadPool = MoreExecutors.listeningDecorator(threadPool);
  30                 this.connectionSupplier = connectionSupplier;
  31         }
  32
  33         @Override
  34         public RemovePluginCommand waitFor(int milliseconds) {
  35                 removePlugin.setMaxWaitTime(milliseconds);
  36                 return this;
  37         }
  38
  39         @Override
  40         public RemovePluginCommand purge() {
  41                 removePlugin.setPurge(true);
  42                 return this;
  43         }
  44
  45         @Override
  46         public Executable<Boolean> plugin(String pluginClass) {
  47                 removePlugin.setPluginName(pluginClass);
  48                 return this::execute;
  49         }
  50
  51         private ListenableFuture<Boolean> execute() {
  52                 return threadPool.submit(this::executeDialog);
  53         }
  54
  55         private boolean executeDialog() throws IOException, ExecutionException, InterruptedException {
  56                 try (RemovePluginDialog removePluginDialog = new RemovePluginDialog()) {
  57                         return removePluginDialog.send(removePlugin).get();
  58                 }
  59         }
  60
  61         private class RemovePluginDialog extends FcpDialog<Boolean> {
  62
  63                 private final AtomicBoolean finished = new AtomicBoolean();
  64                 private final AtomicBoolean pluginRemoved = new AtomicBoolean();
  65
  66                 public RemovePluginDialog() throws IOException {
  67                         super(threadPool, connectionSupplier.get());
  68                 }
  69
  70                 @Override
  71                 protected boolean isFinished() {
  72                         return finished.get();
  73                 }
  74
  75                 @Override
  76                 protected Boolean getResult() {
  77                         return pluginRemoved.get();
  78                 }
  79
  80                 @Override
  81                 protected void consumePluginRemoved(PluginRemoved pluginRemoved) {
  82                         this.pluginRemoved.set(true);
  83                         finished.set(true);
  84                 }
  85
  86                 @Override
  87                 protected void consumeProtocolError(ProtocolError protocolError) {
  88                         finished.set(true);
  89                 }
  90
  91         }
  92
  93 }