X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fxdcc%2Fcore%2FCore.java;h=6af2f7365add2df1e9fa02101bc8a810890a6dcd;hb=d3a8f3edb125265c6feb8b0ccfaa035497c07f15;hp=0c66644be59e7d27ad2c73519a584061898ab77b;hpb=dca760d9a6b05c401fdb67729cdd43281bb5daf6;p=xudocci.git
diff --git a/src/main/java/net/pterodactylus/xdcc/core/Core.java b/src/main/java/net/pterodactylus/xdcc/core/Core.java
index 0c66644..6af2f73 100644
--- a/src/main/java/net/pterodactylus/xdcc/core/Core.java
+++ b/src/main/java/net/pterodactylus/xdcc/core/Core.java
@@ -17,6 +17,8 @@
package net.pterodactylus.xdcc.core;
+import static net.pterodactylus.xdcc.data.Download.FILTER_RUNNING;
+
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
@@ -24,9 +26,11 @@ import java.io.IOException;
import java.io.OutputStream;
import java.util.Collection;
import java.util.Collections;
+import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
+import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
@@ -34,13 +38,28 @@ import net.pterodactylus.irc.Connection;
import net.pterodactylus.irc.ConnectionBuilder;
import net.pterodactylus.irc.DccReceiver;
import net.pterodactylus.irc.event.ChannelJoined;
+import net.pterodactylus.irc.event.ChannelLeft;
import net.pterodactylus.irc.event.ChannelMessageReceived;
+import net.pterodactylus.irc.event.ClientQuit;
+import net.pterodactylus.irc.event.ConnectionClosed;
import net.pterodactylus.irc.event.ConnectionEstablished;
+import net.pterodactylus.irc.event.DccAcceptReceived;
+import net.pterodactylus.irc.event.DccDownloadFailed;
+import net.pterodactylus.irc.event.DccDownloadFinished;
import net.pterodactylus.irc.event.DccSendReceived;
+import net.pterodactylus.irc.event.NicknameChanged;
+import net.pterodactylus.irc.event.PrivateMessageReceived;
+import net.pterodactylus.irc.event.PrivateNoticeReceived;
import net.pterodactylus.irc.util.MessageCleaner;
import net.pterodactylus.irc.util.RandomNickname;
import net.pterodactylus.xdcc.core.event.BotAdded;
import net.pterodactylus.xdcc.core.event.CoreStarted;
+import net.pterodactylus.xdcc.core.event.DownloadFailed;
+import net.pterodactylus.xdcc.core.event.DownloadFinished;
+import net.pterodactylus.xdcc.core.event.DownloadStarted;
+import net.pterodactylus.xdcc.core.event.GenericError;
+import net.pterodactylus.xdcc.core.event.GenericMessage;
+import net.pterodactylus.xdcc.core.event.MessageReceived;
import net.pterodactylus.xdcc.data.Bot;
import net.pterodactylus.xdcc.data.Channel;
import net.pterodactylus.xdcc.data.Download;
@@ -49,15 +68,21 @@ import net.pterodactylus.xdcc.data.Pack;
import net.pterodactylus.xdcc.data.Server;
import com.google.common.base.Optional;
+import com.google.common.base.Predicate;
+import com.google.common.collect.FluentIterable;
import com.google.common.collect.HashBasedTable;
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
+import com.google.common.collect.Multimap;
import com.google.common.collect.Sets;
import com.google.common.collect.Table;
import com.google.common.eventbus.EventBus;
import com.google.common.eventbus.Subscribe;
-import com.google.common.util.concurrent.AbstractIdleService;
+import com.google.common.io.Closeables;
+import com.google.common.util.concurrent.AbstractExecutionThreadService;
import com.google.inject.Inject;
/**
@@ -65,7 +90,7 @@ import com.google.inject.Inject;
*
* @author David âBombeâ Roden
*/
-public class Core extends AbstractIdleService {
+public class Core extends AbstractExecutionThreadService {
/** The logger. */
private static final Logger logger = Logger.getLogger(Core.class.getName());
@@ -95,10 +120,10 @@ public class Core extends AbstractIdleService {
private final Table networkBots = HashBasedTable.create();
/** The current downloads. */
- private final Map downloads = Maps.newHashMap();
+ private final Multimap downloads = HashMultimap.create();
/** The current DCC receivers. */
- private final Collection dccReceivers = Sets.newHashSet();
+ private final Collection dccReceivers = Lists.newArrayList();
/**
* Creates a new core.
@@ -122,6 +147,15 @@ public class Core extends AbstractIdleService {
//
/**
+ * Returns all currently known connections.
+ *
+ * @return All currently known connections
+ */
+ public Collection connections() {
+ return networkConnections.values();
+ }
+
+ /**
* Returns all configured channels. Due to various circumstances, configured
* channels might not actually be joined.
*
@@ -159,12 +193,12 @@ public class Core extends AbstractIdleService {
}
/**
- * Returns the currently active DCC receivers.
+ * Returns all currently running downloads.
*
- * @return The currently active DCC receivers
+ * @return All currently running downloads
*/
- public Collection dccReceivers() {
- return dccReceivers;
+ public Collection downloads() {
+ return downloads.values();
}
//
@@ -195,6 +229,25 @@ public class Core extends AbstractIdleService {
return;
}
+ /* check if we are already downloading the file? */
+ if (downloads.containsKey(pack.name())) {
+ Collection packDownloads = downloads.get(pack.name());
+ Collection runningDownloads = FluentIterable.from(packDownloads).filter(FILTER_RUNNING).toSet();
+ if (!runningDownloads.isEmpty()) {
+ Download download = runningDownloads.iterator().next();
+ eventBus.post(new GenericMessage(String.format("File %s is already downloading from %s (%s).", pack.name(), download.bot().name(), download.bot().network().name())));
+ return;
+ }
+ StringBuilder bots = new StringBuilder();
+ for (Download download : packDownloads) {
+ if (bots.length() > 0) {
+ bots.append(", ");
+ }
+ bots.append(download.bot().name()).append(" (").append(download.bot().network().name()).append(')');
+ }
+ eventBus.post(new GenericMessage(String.format("File %s is already requested from %d bots (%s).", pack.name(), packDownloads.size(), bots.toString())));
+ }
+
Download download = new Download(bot, pack);
downloads.put(pack.name(), download);
@@ -205,6 +258,20 @@ public class Core extends AbstractIdleService {
}
}
+ /**
+ * Closes the given connection.
+ *
+ * @param connection
+ * The connection to close
+ */
+ public void closeConnection(Connection connection) {
+ try {
+ connection.close();
+ } catch (IOException ioe1) {
+ /* TODO */
+ }
+ }
+
//
// ABSTRACTIDLESERVICE METHODS
//
@@ -213,15 +280,7 @@ public class Core extends AbstractIdleService {
protected void startUp() {
for (Channel channel : channels) {
logger.info(String.format("Connecting to Channel %s on Network %sâ¦", channel.name(), channel.network().name()));
- if (!networkConnections.containsKey(channel.network())) {
- /* select a random server. */
- List servers = Lists.newArrayList(channel.network().servers());
- Server server = servers.get((int) (Math.random() * servers.size()));
- Connection connection = new ConnectionBuilder(eventBus).connect(server.hostname()).port(server.unencryptedPorts().iterator().next()).build();
- connection.username(RandomNickname.get()).realName(RandomNickname.get());
- networkConnections.put(channel.network(), connection);
- connection.start();
- }
+ connectNetwork(channel.network());
}
/* notify listeners. */
@@ -229,10 +288,62 @@ public class Core extends AbstractIdleService {
}
@Override
+ protected void run() throws Exception {
+ while (isRunning()) {
+ try {
+ Thread.sleep(TimeUnit.MINUTES.toMillis(1));
+ } catch (InterruptedException ie1) {
+ /* ignore. */
+ }
+
+ /* find channels that should be monitored but are not. */
+ for (Channel channel : channels) {
+ if (joinedChannels.contains(channel)) {
+ continue;
+ }
+
+ connectNetwork(channel.network());
+ Connection connection = networkConnections.get(channel.network());
+ if (connection.established()) {
+ eventBus.post(new GenericMessage(String.format("Trying to join %s on %s.", channel.name(), channel.network().name())));
+ connection.joinChannel(channel.name());
+ }
+ }
+ }
+ }
+
+ @Override
protected void shutDown() {
}
//
+ // PRIVATE METHODS
+ //
+
+ /**
+ * Starts a new connection for the given network if no such connection exists
+ * already.
+ *
+ * @param network
+ * The network to connect to
+ */
+ private void connectNetwork(Network network) {
+ if (!networkConnections.containsKey(network)) {
+ /* select a random server. */
+ List servers = Lists.newArrayList(network.servers());
+ if (servers.isEmpty()) {
+ eventBus.post(new GenericError(String.format("Network %s does not have any servers.", network.name())));
+ return;
+ }
+ Server server = servers.get((int) (Math.random() * servers.size()));
+ Connection connection = new ConnectionBuilder(eventBus).connect(server.hostname()).port(server.unencryptedPorts().iterator().next()).build();
+ connection.username(RandomNickname.get()).realName(RandomNickname.get());
+ networkConnections.put(network, connection);
+ connection.start();
+ }
+ }
+
+ //
// EVENT HANDLERS
//
@@ -267,6 +378,45 @@ public class Core extends AbstractIdleService {
}
/**
+ * Remove all data stored for a network if the connection is closed.
+ *
+ * @param connectionClosed
+ * The connection closed event
+ */
+ @Subscribe
+ public void connectionClosed(ConnectionClosed connectionClosed) {
+ Optional network = getNetwork(connectionClosed.connection());
+ if (!network.isPresent()) {
+ return;
+ }
+
+ /* find all channels that need to be removed. */
+ for (Collection channels : ImmutableList.of(joinedChannels, extraChannels)) {
+ for (Iterator channelIterator = channels.iterator(); channelIterator.hasNext(); ) {
+ Channel joinedChannel = channelIterator.next();
+ if (!joinedChannel.network().equals(network.get())) {
+ continue;
+ }
+
+ channelIterator.remove();
+ }
+ }
+
+ /* now remove all bots for that network. */
+ Map bots = networkBots.row(network.get());
+ int botCount = bots.size();
+ int packCount = 0;
+ for (Bot bot : bots.values()) {
+ packCount += bot.packs().size();
+ }
+ bots.clear();
+ eventBus.post(new GenericMessage(String.format("Network %s disconnected, %d bots removed, %d packs removed.", network.get().name(), botCount, packCount)));
+
+ /* now remove the network. */
+ networkConnections.remove(network.get());
+ }
+
+ /**
* Shows a message when a channel was joined by us.
*
* @param channelJoined
@@ -294,6 +444,90 @@ public class Core extends AbstractIdleService {
}
/**
+ * Removes bots that leave a channel, or channels when itâs us thatâs leaving.
+ *
+ * @param channelLeft
+ * The channel left event
+ */
+ @Subscribe
+ public void channelLeft(ChannelLeft channelLeft) {
+ Optional network = getNetwork(channelLeft.connection());
+ if (!network.isPresent()) {
+ return;
+ }
+
+ Bot bot = networkBots.get(network.get(), channelLeft.client().nick().get());
+ if (bot == null) {
+ /* maybe it was us? */
+ if (channelLeft.connection().isSource(channelLeft.client())) {
+ Optional channel = getChannel(network.get(), channelLeft.channel());
+ if (!channel.isPresent()) {
+ /* maybe it was an extra channel? */
+ channel = getExtraChannel(network.get(), channelLeft.channel());
+ if (!channel.isPresent()) {
+ /* okay, whatever. */
+ return;
+ }
+
+ extraChannels.remove(channel);
+ } else {
+ channels.remove(channel.get());
+ }
+
+ eventBus.post(new GenericMessage(String.format("Left Channel %s on %s.", channel.get().name(), channel.get().network().name())));
+ }
+
+ return;
+ }
+
+ Bot removedBot = networkBots.remove(network.get(), channelLeft.client().nick().get());
+ if (removedBot != null) {
+ eventBus.post(new GenericMessage(String.format("Bot %s (%s) was removed, %d packs removed.", removedBot.name(), removedBot.network().name(), removedBot.packs().size())));
+ }
+ }
+
+ /**
+ * Removes a client (which may be a bot) from the table of known bots.
+ *
+ * @param clientQuit
+ * The client quit event
+ */
+ @Subscribe
+ public void clientQuit(ClientQuit clientQuit) {
+ Optional network = getNetwork(clientQuit.connection());
+ if (!network.isPresent()) {
+ return;
+ }
+
+ Bot removedBot = networkBots.remove(network.get(), clientQuit.client().nick().get());
+ if (removedBot != null) {
+ eventBus.post(new GenericMessage(String.format("Bot %s (%s) was removed, %d packs removed.", removedBot.name(), removedBot.network().name(), removedBot.packs().size())));
+ }
+ }
+
+ /**
+ * If the nickname of a bit changes, remove it from the old name and store it
+ * under the new name.
+ *
+ * @param nicknameChanged
+ * The nickname changed event
+ */
+ @Subscribe
+ public void nicknameChanged(NicknameChanged nicknameChanged) {
+ Optional network = getNetwork(nicknameChanged.connection());
+ if (!network.isPresent()) {
+ return;
+ }
+
+ Bot bot = networkBots.remove(network.get(), nicknameChanged.client().nick().get());
+ if (bot == null) {
+ return;
+ }
+
+ networkBots.put(network.get(), nicknameChanged.newNickname(), bot);
+ }
+
+ /**
* If a message on a channel is received, it is parsed for pack information
* with is then added to a bot.
*
@@ -323,7 +557,7 @@ public class Core extends AbstractIdleService {
Bot bot;
synchronized (networkBots) {
if (!networkBots.contains(network.get(), channelMessageReceived.source().nick().get())) {
- bot = new Bot(network.get()).name(channelMessageReceived.source().nick().get());
+ bot = new Bot(network.get(), channelMessageReceived.source().nick().get());
networkBots.put(network.get(), channelMessageReceived.source().nick().get(), bot);
eventBus.post(new BotAdded(bot));
} else {
@@ -337,33 +571,229 @@ public class Core extends AbstractIdleService {
}
/**
+ * Forward all private messages to every console.
+ *
+ * @param privateMessageReceived
+ * The private message recevied event
+ */
+ @Subscribe
+ public void privateMessageReceived(PrivateMessageReceived privateMessageReceived) {
+ eventBus.post(new MessageReceived(privateMessageReceived.source(), privateMessageReceived.message()));
+ }
+
+ /**
+ * Sends a message to all console when a notice was received.
+ *
+ * @param privateNoticeReceived
+ * The notice received event
+ */
+ @Subscribe
+ public void privateNoticeReceived(PrivateNoticeReceived privateNoticeReceived) {
+ Optional network = getNetwork(privateNoticeReceived.connection());
+ if (!network.isPresent()) {
+ return;
+ }
+
+ eventBus.post(new GenericMessage(String.format("Notice from %s (%s): %s", privateNoticeReceived.reply().source().get(), network.get(), privateNoticeReceived.text())));
+ }
+
+ /**
* Starts a DCC download.
*
* @param dccSendReceived
* The DCC SEND event
*/
@Subscribe
- public void dccSendReceived(DccSendReceived dccSendReceived) {
- Optional network = getNetwork(dccSendReceived.connection());
+ public void dccSendReceived(final DccSendReceived dccSendReceived) {
+ final Optional network = getNetwork(dccSendReceived.connection());
if (!network.isPresent()) {
return;
}
- Download download = downloads.get(dccSendReceived.filename());
- if (download == null) {
+ Collection packDownloads = downloads.get(dccSendReceived.filename());
+ if (packDownloads.isEmpty()) {
/* unknown download, ignore. */
return;
}
- logger.info(String.format("Starting download of %s.", dccSendReceived.filename()));
+ /* check if itâs already downloading. */
+ Collection runningDownloads = FluentIterable.from(packDownloads).filter(FILTER_RUNNING).toSet();
+ if (!runningDownloads.isEmpty()) {
+ eventBus.post(new GenericMessage(String.format("Ignoring offer for %s, itâs already being downloaded.", dccSendReceived.filename())));
+ return;
+ }
+
+ /* locate the correct download. */
+ Collection requestedDownload = FluentIterable.from(packDownloads).filter(new Predicate() {
+
+ @Override
+ public boolean apply(Download download) {
+ return download.bot().network().equals(network.get()) && download.bot().name().equalsIgnoreCase(dccSendReceived.source().nick().get());
+ }
+ }).toSet();
+
+ /* we did not request this download. */
+ if (requestedDownload.isEmpty()) {
+ return;
+ }
+
+ Download download = requestedDownload.iterator().next();
+
+ /* check if the file already exists. */
+ File outputFile = new File(temporaryDirectory, dccSendReceived.filename());
+ if (outputFile.exists()) {
+ long existingFileSize = outputFile.length();
+
+ /* file already complete? */
+ if ((dccSendReceived.filesize() > -1) && (existingFileSize >= dccSendReceived.filesize())) {
+ /* file is apparently already complete. just move it. */
+ if (outputFile.renameTo(new File(finalDirectory, download.pack().name()))) {
+ eventBus.post(new GenericMessage(String.format("File %s already downloaded.", download.pack().name())));
+ } else {
+ eventBus.post(new GenericMessage(String.format("File %s already downloaded but not moved to %s.", download.pack().name(), finalDirectory)));
+ }
+
+ /* remove download. */
+ downloads.removeAll(download.pack().name());
+ return;
+ }
+
+ /* file not complete yet, DCC resume it. */
+ try {
+ download.remoteAddress(dccSendReceived.inetAddress()).filesize(dccSendReceived.filesize());
+ dccSendReceived.connection().sendDccResume(dccSendReceived.source().nick().get(), dccSendReceived.filename(), dccSendReceived.port(), existingFileSize);
+ } catch (IOException ioe1) {
+ eventBus.post(new GenericError(String.format("Could not send DCC RESUME %s to %s (%s).", dccSendReceived.filename(), dccSendReceived.source().nick().get(), ioe1.getMessage())));
+ }
+
+ return;
+ }
+
+ /* file does not exist, start the download. */
try {
- File outputFile = new File(temporaryDirectory, dccSendReceived.filename());
OutputStream fileOutputStream = new FileOutputStream(outputFile);
DccReceiver dccReceiver = new DccReceiver(eventBus, dccSendReceived.inetAddress(), dccSendReceived.port(), dccSendReceived.filename(), dccSendReceived.filesize(), fileOutputStream);
+ download.filename(outputFile.getPath()).outputStream(fileOutputStream).dccReceiver(dccReceiver);
dccReceivers.add(dccReceiver);
dccReceiver.start();
+ eventBus.post(new DownloadStarted(download));
} catch (FileNotFoundException fnfe1) {
- logger.log(Level.WARNING, "Could not open file for download!", fnfe1);
+ eventBus.post(new GenericError(String.format("Could not start download of %s from %s (%s).", dccSendReceived.filename(), dccSendReceived.source().nick().get(), fnfe1.getMessage())));
+ }
+ }
+
+ @Subscribe
+ public void dccAcceptReceived(final DccAcceptReceived dccAcceptReceived) {
+ final Optional network = getNetwork(dccAcceptReceived.connection());
+ if (!network.isPresent()) {
+ return;
+ }
+
+ Collection packDownloads = downloads.get(dccAcceptReceived.filename());
+ if (packDownloads.isEmpty()) {
+ /* unknown download, ignore. */
+ return;
+ }
+
+ /* check if itâs already downloading. */
+ Collection runningDownloads = FluentIterable.from(packDownloads).filter(FILTER_RUNNING).toSet();
+ if (!runningDownloads.isEmpty()) {
+ eventBus.post(new GenericMessage(String.format("Ignoring offer for %s, itâs already being downloaded.", dccAcceptReceived.filename())));
+ return;
+ }
+
+ /* locate the correct download. */
+ Collection requestedDownload = FluentIterable.from(packDownloads).filter(new Predicate() {
+
+ @Override
+ public boolean apply(Download download) {
+ return download.bot().network().equals(network.get()) && download.bot().name().equalsIgnoreCase(dccAcceptReceived.source().nick().get());
+ }
+ }).toSet();
+
+ /* we did not request this download. */
+ if (requestedDownload.isEmpty()) {
+ return;
+ }
+
+ Download download = requestedDownload.iterator().next();
+
+ try {
+ File outputFile = new File(temporaryDirectory, dccAcceptReceived.filename());
+ if (outputFile.length() != dccAcceptReceived.position()) {
+ eventBus.post(new GenericError(String.format("Download %s from %s does not start at the right position!")));
+ logger.log(Level.WARNING, String.format("Download %s from %s: have %d bytes but wants to resume from %d!", dccAcceptReceived.filename(), dccAcceptReceived.source(), outputFile.length(), dccAcceptReceived.position()));
+
+ downloads.removeAll(download.pack().name());
+ return;
+ }
+ OutputStream outputStream = new FileOutputStream(outputFile, true);
+ DccReceiver dccReceiver = new DccReceiver(eventBus, download.remoteAddress(), dccAcceptReceived.port(), dccAcceptReceived.filename(), dccAcceptReceived.position(), download.filesize(), outputStream);
+ download.filename(outputFile.getPath()).outputStream(outputStream).dccReceiver(dccReceiver);
+ dccReceivers.add(dccReceiver);
+ dccReceiver.start();
+ eventBus.post(new DownloadStarted(download));
+ } catch (FileNotFoundException fnfe1) {
+ }
+ }
+
+ /**
+ * Closes the output stream of the download and moves the file to the final
+ * location.
+ *
+ * @param dccDownloadFinished
+ * The DCC download finished event
+ */
+ @Subscribe
+ public void dccDownloadFinished(DccDownloadFinished dccDownloadFinished) {
+
+ /* locate the correct download. */
+ Collection requestedDownload = FluentIterable.from(downloads.get(dccDownloadFinished.dccReceiver().filename())).filter(FILTER_RUNNING).toSet();
+ if (requestedDownload.isEmpty()) {
+ /* this seems wrong. */
+ logger.warning("Download finished but could not be located.");
+ return;
+ }
+ Download download = requestedDownload.iterator().next();
+
+ try {
+ download.outputStream().close();
+ File file = new File(download.filename());
+ file.renameTo(new File(finalDirectory, download.pack().name()));
+ eventBus.post(new DownloadFinished(download));
+ dccReceivers.remove(dccDownloadFinished.dccReceiver());
+ downloads.removeAll(download.pack().name());
+ } catch (IOException ioe1) {
+ /* TODO - handle all the errors. */
+ logger.log(Level.WARNING, String.format("Could not move file %s to directory %s.", download.filename(), finalDirectory), ioe1);
+ }
+ }
+
+ /**
+ * Closes the output stream and notifies all listeners of the failure.
+ *
+ * @param dccDownloadFailed
+ * The DCC download failed event
+ */
+ @Subscribe
+ public void dccDownloadFailed(DccDownloadFailed dccDownloadFailed) {
+
+ /* locate the correct download. */
+ Collection requestedDownload = FluentIterable.from(downloads.get(dccDownloadFailed.dccReceiver().filename())).filter(FILTER_RUNNING).toSet();
+ if (requestedDownload.isEmpty()) {
+ /* this seems wrong. */
+ logger.warning("Download finished but could not be located.");
+ return;
+ }
+ Download download = requestedDownload.iterator().next();
+
+ try {
+ Closeables.close(download.outputStream(), true);
+ eventBus.post(new DownloadFailed(download));
+ dccReceivers.remove(dccDownloadFailed.dccReceiver());
+ downloads.removeAll(download.pack().name());
+ } catch (IOException ioe1) {
+ /* swallow silently. */
}
}
@@ -401,7 +831,26 @@ public class Core extends AbstractIdleService {
*/
public Optional getChannel(Network network, String channelName) {
for (Channel channel : channels) {
- if (channel.network().equals(network) && (channel.name().equals(channelName))) {
+ if (channel.network().equals(network) && (channel.name().equalsIgnoreCase(channelName))) {
+ return Optional.of(channel);
+ }
+ }
+ return Optional.absent();
+ }
+
+ /**
+ * Returns the extra channel for the given network and name.
+ *
+ * @param network
+ * The network the channel is located on
+ * @param channelName
+ * The name of the channel
+ * @return The extra channel, or {@link Optional#absent()} if no extra channel
+ * matching the given network and name was found
+ */
+ public Optional getExtraChannel(Network network, String channelName) {
+ for (Channel channel : extraChannels) {
+ if (channel.network().equals(network) && (channel.name().equalsIgnoreCase(channelName))) {
return Optional.of(channel);
}
}