1. ApacheCon EU2008

2. Niklas Gustavsson [email_address] http://protocol7.com 3.

• MINA commiter since 2007

• On FtpServer since 2005

4.

• So, what'sMINA ?

5.

• Java API for network applications

6.

• Event driven

• Asynchronous

7.

• Server side

• Client side

8.

• Pluggable implementations

9.

• You will probably use

• the NIO implementation

10.

• ...and the VmPipe

11.

• Separation of concerns

• Wire Business logic

12.

• MINAarchitecture

13. IoService IoConnector IoAcceptor 14.

• IoFilter

15.

• Protocol codec

16.

• Lots offreestuff!

17.

• Traffic shapers

• SSL

• Compression

• Session based logging

• Firewall

18.

• IoHandler

19.

• Concurrency... yeay!

20.

• Acceptor thread

• Connector thread

21.

• I/O processor thread

• Cores + 1

22.

• ExecutorFilter

23.

• Fine, so what's best for me?

24.

• What's new in MINA2.0

25.

• Thread model redesigned

26.

• Simplified configuration

27.

• ByteBuffer now IoBuffer

• and default to heap allocation

28.

• IoSessionLoggerremoved

29.

• Andlotsand lots of

• Cleanup and improvements

30.

• So, which version shouldI use?

31.

• MINA1.0

• MINA1.1

• MINA2.0

32.

• Migrating from1.x

33.

• Review thread model

34.

• Update configuration

35.

• Remove IoSessionLogger

36.

• Update class and package names

37.

• DEMO!

38.

• Simplechatserver in MINA

39.

• public final static Chat INSTANCE = new Chat();

• private List users = new ArrayList();

• public void addUser(User user) {

• users.add(user);

• }

• public void removeUser(User user) {

• users.remove(user);

• }

• public void talkToAll(Message msg) {

• for(User user : users) {

• user.talkTo(msg);

• }

• }

40.

• public class ChatDecoder extends CumulativeProtocolDecoder {

• protected boolean doDecode(IoSession session, IoBuffer buffer, ProtocolDecoderOutput out) throws Exception {

• if(do we have all the data we need?) {

• Message msg = new Message(user, text);

• out.write(msg);

• return true;

• } else {

• return false;

• }

• }

• }

41.

• public class ChatHandler extends IoHandlerAdapter {

• public void sessionCreated(IoSession session)throws Exception {

• User user = new MinaUser(session);

• session.setAttribute(USER_ATTRIBUTE, user);

• Chat.INSTANCE.addUser(user);

• }

42.

• ChatHandler continued...

• public void messageReceived(IoSession session,Object o) throws Exception {

• Message msg = (Message) o;

• if(msg.getText().equalsIgnoreCase("QUIT")) {

• session.closeOnFlush();

• } else {

• Chat.INSTANCE.talkToAll(msg);

• }

• }

• ...

• }

43.

• SocketAcceptor acceptor = new NioSocketAcceptor();

• acceptor.getFilterChain().addLast("codec", new ProtocolCodecFilter(new ChatCodecFactory()) );

• acceptor.setIdleTime(IdleStatus.BOTH_IDLE, 60);

• acceptor.setHandler(new ChatHandler());

• acceptor .bind(new InetSocketAddress(6789));

44. Fire up yourterminals telnet 62.12.11.90 6789 45. http://mina.apache.org 46. [email_address] 47. Questions ? 48. http://flickr.com/photos/samiksha/408007916/ http://flickr.com/photos/henrikmoltke/142750871/