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MIRCService.java
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MIRCService.java
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/*
* Copyright © 2022 Mark Raynsford <code@io7m.com> https://www.io7m.com
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package com.io7m.mesquida.internal.irc;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.io7m.jmulticlose.core.CloseableCollection;
import com.io7m.jmulticlose.core.CloseableCollectionType;
import com.io7m.jmulticlose.core.ClosingResourceFailedException;
import com.io7m.mesquida.internal.MJson;
import com.io7m.mesquida.internal.mq.MMessageFormatted;
import org.apache.activemq.artemis.api.core.TransportConfiguration;
import org.apache.activemq.artemis.api.jms.ActiveMQJMSClient;
import org.apache.activemq.artemis.core.remoting.impl.netty.NettyConnectorFactory;
import org.pircbotx.Configuration;
import org.pircbotx.PircBotX;
import org.pircbotx.UtilSSLSocketFactory;
import org.pircbotx.exception.IrcException;
import org.pircbotx.hooks.ListenerAdapter;
import org.pircbotx.hooks.events.ConnectAttemptFailedEvent;
import org.pircbotx.hooks.events.ConnectEvent;
import org.pircbotx.hooks.events.DisconnectEvent;
import org.pircbotx.hooks.events.JoinEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.TextMessage;
import javax.jms.TopicSession;
import javax.jms.TopicSubscriber;
import java.io.IOException;
import java.util.Objects;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import static org.apache.activemq.artemis.api.jms.JMSFactoryType.CF;
/**
* The IRC service.
*/
public final class MIRCService extends ListenerAdapter
implements AutoCloseable, Runnable
{
private static final Logger LOG =
LoggerFactory.getLogger(MIRCService.class);
private final ExecutorService executor;
private final AtomicBoolean done;
private final LinkedBlockingQueue<CommandType> commands;
private final MIRCServiceConfiguration configuration;
private final ExecutorService ircExecutor;
private final ObjectMapper queueMessageMapper;
private CloseableCollectionType<ClosingResourceFailedException> resources;
private TopicSubscriber subscriber;
private TopicSession session;
private PircBotX ircBot;
private MIRCService(
final MIRCServiceConfiguration inConfiguration,
final ExecutorService inExecutor,
final ExecutorService inIrcExecutor)
{
this.executor =
Objects.requireNonNull(inExecutor, "executor");
this.configuration =
Objects.requireNonNull(inConfiguration, "configuration");
this.ircExecutor =
Objects.requireNonNull(inIrcExecutor, "inIrcExecutor");
this.done =
new AtomicBoolean(false);
this.commands =
new LinkedBlockingQueue<>();
this.queueMessageMapper =
MJson.createMapper(
Set.of(
int.class.getCanonicalName(),
String.class.getCanonicalName(),
MMessageFormatted.class.getCanonicalName()
)
);
this.resources =
CloseableCollection.create();
}
/**
* Create a new IRC service.
*
* @param configuration The configuration
*
* @return A new IRC service
*/
public static MIRCService create(
final MIRCServiceConfiguration configuration)
{
final var executor =
Executors.newSingleThreadExecutor(r -> {
final var thread = new Thread(r);
thread.setName("com.io7m.mesquida.irc[" + thread.getId() + "]");
thread.setDaemon(true);
return thread;
});
final var ircExecutor =
Executors.newSingleThreadExecutor(r -> {
final var thread = new Thread(r);
thread.setName("com.io7m.mesquida.irc_bot[" + thread.getId() + "]");
thread.setDaemon(true);
return thread;
});
final var service = new MIRCService(configuration, executor, ircExecutor);
executor.execute(service);
return service;
}
@Override
public void close()
{
if (this.done.compareAndSet(false, true)) {
this.executor.shutdown();
}
}
@Override
public void run()
{
while (!this.done.get()) {
try {
this.configureMessageQueue();
} catch (final Exception e) {
LOG.error("unable to configure message queue: ", e);
this.pause();
continue;
}
try {
this.configureIRC();
} catch (final Exception e) {
LOG.error("unable to configure irc: ", e);
this.pause();
continue;
}
while (!this.done.get()) {
try {
final var command =
this.commands.poll(1L, TimeUnit.SECONDS);
if (command == null) {
continue;
}
if (command instanceof CommandIRCDisconnected) {
break;
}
if (command instanceof CommandJMSReceived message) {
this.handleMessage(message.message);
continue;
}
} catch (final InterruptedException e) {
Thread.currentThread().interrupt();
} catch (final JMSException e) {
LOG.error("jms: ", e);
} catch (final IOException e) {
LOG.error("i/o: ", e);
}
}
}
try {
this.resources.close();
} catch (final ClosingResourceFailedException e) {
LOG.error("error closing service: ", e);
}
}
private void configureIRC()
throws IOException, IrcException
{
final var tlsFactory = new UtilSSLSocketFactory();
if (this.configuration.ircUnsafeTrust()) {
tlsFactory.trustAllCertificates();
}
final var builder = new Configuration.Builder();
builder.addServer(
this.configuration.ircHost(),
this.configuration.ircPort());
builder.addAutoJoinChannel(this.configuration.ircChannel());
builder.setName(this.configuration.ircUserName());
builder.setRealName(this.configuration.ircUserName());
builder.setVersion("mesquida");
builder.setAutoReconnect(true);
builder.setSocketFactory(tlsFactory);
builder.setLogin(this.configuration.ircUserName());
builder.setSocketTimeout(5_000);
builder.setAutoReconnectAttempts(Integer.MAX_VALUE);
builder.setAutoReconnectDelay(1_000);
builder.addListener(this);
final var irc_configuration = builder.buildConfiguration();
this.ircBot = this.resources.add(new PircBotX(irc_configuration));
this.ircExecutor.execute(() -> {
try {
this.ircBot.startBot();
} catch (final Exception e) {
LOG.error("irc failed: ", e);
}
});
}
@Override
public void onConnect(
final ConnectEvent event)
throws Exception
{
super.onConnect(event);
LOG.debug("connected");
}
@Override
public void onJoin(
final JoinEvent event)
throws Exception
{
super.onJoin(event);
LOG.debug("joined: {}", event.getChannel().getName());
}
@Override
public void onConnectAttemptFailed(
final ConnectAttemptFailedEvent event)
throws Exception
{
super.onConnectAttemptFailed(event);
event.getConnectExceptions().forEach(
(address, exception) ->
LOG.error(
"connection failed: {} - {}",
address,
exception.getClass().getCanonicalName(),
exception.getMessage())
);
}
@Override
public void onDisconnect(
final DisconnectEvent event)
throws Exception
{
super.onDisconnect(event);
this.commands.add(new CommandIRCDisconnected());
final Exception ex = event.getDisconnectException();
if (ex != null) {
LOG.info(
"disconnected: {} - {}",
ex.getClass().getCanonicalName(),
ex.getMessage());
} else {
LOG.info("disconnected: (no exception information available)");
}
}
private void handleMessage(
final Message message)
throws JMSException, IOException, InterruptedException
{
if (message instanceof TextMessage textMessage) {
final MMessageFormatted parsed;
try {
parsed = this.queueMessageMapper.readValue(
textMessage.getText(),
MMessageFormatted.class
);
} catch (JsonProcessingException | JMSException e) {
/*
* Acknowledge the message if we can't parse it, so that we don't
* get it again and fail again.
*/
textMessage.acknowledge();
throw e;
}
/*
* Don't acknowledge the message until the IRC server has accepted
* our version of it.
*/
this.ircBot.send()
.message(this.configuration.ircChannel(), parsed.text);
textMessage.acknowledge();
}
LOG.debug("ignored unrecognized message type: {}", message);
message.acknowledge();
}
private void pause()
{
try {
Thread.sleep(1_000L);
} catch (final InterruptedException ex) {
Thread.currentThread().interrupt();
}
}
private void configureMessageQueue()
throws Exception
{
if (this.resources != null) {
this.resources.close();
}
this.resources = CloseableCollection.create();
LOG.info("connect {}", this.configuration.brokerURL());
final var transportConfiguration =
new TransportConfiguration(NettyConnectorFactory.class.getName());
final var connections =
this.resources.add(
ActiveMQJMSClient.createConnectionFactoryWithoutHA(
CF,
transportConfiguration
));
connections.setBrokerURL(this.configuration.brokerURL().toString());
connections.setClientID(UUID.randomUUID().toString());
connections.setUser(this.configuration.brokerUser());
connections.setPassword(this.configuration.brokerPass());
connections.setReconnectAttempts(-1);
final var topicConnection =
this.resources.add(connections.createTopicConnection());
this.session =
this.resources.add(
topicConnection.createTopicSession(false, 0)
);
final var topic =
this.session.createTopic(this.configuration.brokerTopic());
this.subscriber =
this.resources.add(this.session.createSubscriber(topic));
this.subscriber.setMessageListener(message -> {
this.commands.add(new CommandJMSReceived(message));
});
topicConnection.start();
}
sealed interface CommandType
{
}
record CommandIRCDisconnected() implements CommandType
{
}
record CommandJMSReceived(Message message) implements CommandType
{
}
}