1 package net.pterodactylus.fcp.quelaton;
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.concurrent.atomic.AtomicBoolean;
9 import net.pterodactylus.fcp.IdentifierCollision;
10 import net.pterodactylus.fcp.SubscribeUSK;
11 import net.pterodactylus.fcp.SubscribedUSK;
13 import com.google.common.util.concurrent.ListenableFuture;
14 import com.google.common.util.concurrent.ListeningExecutorService;
15 import com.google.common.util.concurrent.MoreExecutors;
18 * Default {@link SubscribeUskCommand} implementation based on {@link FcpDialog}.
20 * @author <a href="mailto:bombe@freenetproject.org">David ‘Bombe’ Roden</a>
22 public class SubscribeUskCommandImpl implements SubscribeUskCommand {
24 private static final RandomIdentifierGenerator IDENTIFIER = new RandomIdentifierGenerator();
25 private final ListeningExecutorService threadPool;
26 private final ConnectionSupplier connectionSupplier;
27 private final SubscribeUSK subscribeUSK = new SubscribeUSK(IDENTIFIER.generate());
28 private final ActiveSubscriptions activeSubscriptions;
30 public SubscribeUskCommandImpl(
31 ExecutorService threadPool, ConnectionSupplier connectionSupplier,
32 ActiveSubscriptions activeSubscriptions) {
33 this.activeSubscriptions = activeSubscriptions;
34 this.threadPool = MoreExecutors.listeningDecorator(threadPool);
35 this.connectionSupplier = connectionSupplier;
39 public Executable<Optional<UskSubscription>> uri(String uri) {
40 subscribeUSK.setUri(uri);
44 private ListenableFuture<Optional<UskSubscription>> execute() {
45 return threadPool.submit(this::executeDialog);
48 private Optional<UskSubscription> executeDialog() throws IOException, ExecutionException, InterruptedException {
49 try (SubscribeUskDialog subscribeUskDialog = new SubscribeUskDialog()) {
50 if (subscribeUskDialog.send(subscribeUSK).get()) {
51 UskSubscription uskSubscription = activeSubscriptions.createUskSubscription(subscribeUSK);
52 return Optional.of(uskSubscription);
54 return Optional.empty();
58 private class SubscribeUskDialog extends FcpDialog<Boolean> {
60 private final AtomicBoolean finished = new AtomicBoolean();
61 private final AtomicBoolean success = new AtomicBoolean();
63 public SubscribeUskDialog() throws IOException {
64 super(threadPool, connectionSupplier.get());
68 protected boolean isFinished() {
69 return finished.get();
73 protected Boolean getResult() {
78 protected void consumeSubscribedUSK(SubscribedUSK subscribedUSK) {
84 protected void consumeIdentifierCollision(IdentifierCollision identifierCollision) {