/**
* Licensed to Cloudera, Inc. under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Cloudera, Inc. licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.cloudera.flume.handlers.irc;
import java.io.IOException;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import org.schwering.irc.lib.IRCConnection;
import org.schwering.irc.lib.IRCEventListener;
import org.schwering.irc.lib.IRCModeParser;
import org.schwering.irc.lib.IRCUser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.cloudera.flume.conf.Context;
import com.cloudera.flume.conf.FlumeConfiguration;
import com.cloudera.flume.conf.SourceFactory.SourceBuilder;
import com.cloudera.flume.core.Event;
import com.cloudera.flume.core.EventImpl;
import com.cloudera.flume.core.EventSource;
import com.google.common.base.Preconditions;
/**
* This logs in and listens to a irc server.
*
* TODO (jon) share the connection to support multiple channels and to support
* an IrcSink.
*/
public class IrcSource extends EventSource.Base {
static final Logger LOG = LoggerFactory.getLogger(IrcSource.class);
private IRCConnection conn;
String host;
int port;
String nick;
String pass;
String user;
String name;
String chan;
boolean ssl; // later iteraton
BlockingQueue<Event> q = new LinkedBlockingQueue<Event>();
public IrcSource(String host, int port, String nick, String pass,
String user, String name, String chan, boolean ssl) {
this.host = host;
this.port = port;
this.nick = nick;
this.pass = pass;
this.user = user;
this.name = name;
this.chan = chan;
this.ssl = ssl;
}
public IrcSource(String host, int port, String nick, String chan) {
this(host, port, nick, null, null, null, chan, false);
}
@Override
public void open() throws IOException {
// TODO (jon) check if the nick usage was successful or not
conn = new IRCConnection(host, new int[] { port }, pass, nick, user, name);
conn.addIRCEventListener(new Listener());
conn.setEncoding(FlumeConfiguration.get().getFlurkerEncoding());
conn.setPong(true);
conn.setDaemon(false);
conn.setColors(false);
conn.connect();
conn.send("join " + chan);
// TODO(jon) check if channel join was successful or not
}
@Override
public void close() throws IOException {
conn.close();
}
private void append(String s) {
if (s == null) {
LOG.error("null append!");
return;
}
q.add(new EventImpl(s.getBytes()));
}
// Need to pick which call backs should be "sources" and which are "sinks".
/**
* Treats IRC events. The most of them are just printed.
*
* TODO (jon) since we have fields, we can use store this as structured data.
*/
public class Listener implements IRCEventListener {
public void onRegistered() {
append("Connected");
}
public void onDisconnected() {
append("Disconnected");
}
public void onError(String msg) {
append("Error: " + msg);
}
public void onError(int num, String msg) {
append("Error #" + num + ": " + msg);
}
public void onInvite(String chan, IRCUser u, String nickPass) {
append(chan + "> " + u.getNick() + " invites " + nickPass);
}
public void onJoin(String chan, IRCUser u) {
append(chan + "> " + u.getNick() + " joins");
}
public void onKick(String chan, IRCUser u, String nickPass, String msg) {
append(chan + "> " + u.getNick() + " kicks " + nickPass);
}
public void onMode(IRCUser u, String nickPass, String mode) {
append("Mode: " + u.getNick() + " sets modes " + mode + " " + nickPass);
}
public void onMode(String chan, IRCUser u, IRCModeParser mp) {
append(chan + "> " + u.getNick() + " sets mode: " + mp.getLine());
}
public void onNick(IRCUser u, String nickNew) {
append("Nick: " + u.getNick() + " is now known as " + nickNew);
}
public void onNotice(String target, IRCUser u, String msg) {
append(target + "> " + u.getNick() + " (notice): " + msg);
}
public void onPart(String chan, IRCUser u, String msg) {
append(chan + "> " + u.getNick() + " parts");
}
public void onPrivmsg(String chan, IRCUser u, String msg) {
append(chan + "> " + u.getNick() + ": " + msg);
}
public void onQuit(IRCUser u, String msg) {
append("Quit: " + u.getNick());
}
public void onReply(int num, String value, String msg) {
append("Reply #" + num + ": " + value + " " + msg);
}
public void onTopic(String chan, IRCUser u, String topic) {
append(chan + "> " + u.getNick() + " changes topic into: " + topic);
}
public void onPing(String p) {
}
public void unknown(String a, String b, String c, String d) {
append("UNKNOWN: " + a + " b " + c + " " + d);
}
}
@Override
public Event next() throws IOException {
try {
Event e = q.take();
updateEventProcessingStats(e);
return e;
} catch (InterruptedException e) {
LOG.error("IrcSource interrupted", e);
throw new IOException(e);
}
}
public static SourceBuilder builder() {
return new SourceBuilder() {
@Override
public EventSource build(Context ctx, String... argv) {
Preconditions.checkArgument(argv.length == 4,
"usage: ircSource(server, port, nick, chan)");
String server = argv[0];
int port = Integer.parseInt(argv[1]);
String nick = argv[2];
String chan = argv[3];
return new IrcSource(server, port, nick, chan);
}
};
}
/**
* A simple irc client using the source irc source interface.
*/
public static void main(String[] argv) throws IOException {
if (argv.length != 4) {
System.err.println("Usage: IrcSource server port nick #channel");
System.exit(-1);
}
String server = argv[0];
int port = 0;
try {
port = Integer.parseInt(argv[1]);
} catch (Exception e) {
System.err.println("Problem parsing port number: " + argv[1]);
System.exit(-1);
}
String nick = argv[2];
String chan = argv[3];
final IrcSource src = new IrcSource(server, port, nick, chan);
new Thread() {
public void run() {
try {
while (true) {
System.out.println(src.next());
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}.start();
src.open();
}
}