src/main/java/net/pterodactylus/fcp/quelaton/GetConfigCommandImpl.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 import java.util.concurrent.atomic.AtomicReference;
   8
   9 import net.pterodactylus.fcp.ConfigData;
  10 import net.pterodactylus.fcp.GetConfig;
  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 GetConfigCommand} implementation based on {@link FcpDialog}.
  18  *
  19  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  20  */
  21 public class GetConfigCommandImpl implements GetConfigCommand {
  22
  23         private final ListeningExecutorService threadPool;
  24         private final ConnectionSupplier connectionSupplier;
  25         private final AtomicBoolean withCurrent = new AtomicBoolean();
  26
  27         public GetConfigCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier) {
  28                 this.threadPool = MoreExecutors.listeningDecorator(threadPool);
  29                 this.connectionSupplier = connectionSupplier;
  30         }
  31
  32         @Override
  33         public GetConfigCommand withCurrent() {
  34                 withCurrent.set(true);
  35                 return this;
  36         }
  37
  38         @Override
  39         public ListenableFuture<ConfigData> execute() {
  40                 return threadPool.submit(this::executeDialog);
  41         }
  42
  43         private ConfigData executeDialog() throws IOException, ExecutionException, InterruptedException {
  44                 GetConfig getConfig = new GetConfig(new RandomIdentifierGenerator().generate());
  45                 getConfig.setWithCurrent(withCurrent.get());
  46                 try (GetConfigDialog getConfigDialog = new GetConfigDialog()) {
  47                         return getConfigDialog.send(getConfig).get();
  48                 }
  49         }
  50
  51         private class GetConfigDialog extends FcpDialog<ConfigData> {
  52
  53                 private final AtomicReference<ConfigData> configData = new AtomicReference<>();
  54
  55                 public GetConfigDialog() throws IOException {
  56                         super(threadPool, connectionSupplier.get());
  57                 }
  58
  59                 @Override
  60                 protected boolean isFinished() {
  61                         return configData.get() != null;
  62                 }
  63
  64                 @Override
  65                 protected ConfigData getResult() {
  66                         return configData.get();
  67                 }
  68
  69                 @Override
  70                 protected void consumeConfigData(ConfigData configData) {
  71                         this.configData.set(configData);
  72                 }
  73
  74         }
  75
  76 }