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         private final AtomicBoolean withDefaults = new AtomicBoolean();
  27
  28         public GetConfigCommandImpl(ExecutorService threadPool, ConnectionSupplier connectionSupplier) {
  29                 this.threadPool = MoreExecutors.listeningDecorator(threadPool);
  30                 this.connectionSupplier = connectionSupplier;
  31         }
  32
  33         @Override
  34         public GetConfigCommand withCurrent() {
  35                 withCurrent.set(true);
  36                 return this;
  37         }
  38
  39         @Override
  40         public GetConfigCommand withDefaults() {
  41                 withDefaults.set(true);
  42                 return this;
  43         }
  44
  45         @Override
  46         public ListenableFuture<ConfigData> execute() {
  47                 return threadPool.submit(this::executeDialog);
  48         }
  49
  50         private ConfigData executeDialog() throws IOException, ExecutionException, InterruptedException {
  51                 GetConfig getConfig = new GetConfig(new RandomIdentifierGenerator().generate());
  52                 getConfig.setWithCurrent(withCurrent.get());
  53                 getConfig.setWithDefaults(withDefaults.get());
  54                 try (GetConfigDialog getConfigDialog = new GetConfigDialog()) {
  55                         return getConfigDialog.send(getConfig).get();
  56                 }
  57         }
  58
  59         private class GetConfigDialog extends FcpDialog<ConfigData> {
  60
  61                 private final AtomicReference<ConfigData> configData = new AtomicReference<>();
  62
  63                 public GetConfigDialog() throws IOException {
  64                         super(threadPool, connectionSupplier.get());
  65                 }
  66
  67                 @Override
  68                 protected boolean isFinished() {
  69                         return configData.get() != null;
  70                 }
  71
  72                 @Override
  73                 protected ConfigData getResult() {
  74                         return configData.get();
  75                 }
  76
  77                 @Override
  78                 protected void consumeConfigData(ConfigData configData) {
  79                         this.configData.set(configData);
  80                 }
  81
  82         }
  83
  84 }