1. Trustin Lee trustin@apache.org http://people.apache.org/~trustin/
Introduction to MINA
Trustin Lee

2. Agenda Overview In-depth View Implementation Demo Future Conclusion
December 13, 2005
ApacheCon US 2005

3. A Multipurpose Infrastructure for Network Applications
Overview
A Multipurpose Infrastructure for Network Applications

4. What is MINA? An acronym for A network application framework
Overview
What is MINA?
An acronym for
A Multipurpose
Infrastructure
For Network
Applications
A network application framework
A subproject of
the Apache Directory Project
December 13, 2005
ApacheCon US 2005

5. Features Unified API Easy Event-driven
Overview
Features
Unified API
Easy
Event-driven
Abstracted from existing I/O APIs
Elegant application design
December 13, 2005
ApacheCon US 2005

6. Supported Transport Layers
Overview
Supported Transport Layers
Out-of-the-box
Based on Java NIO (New I/O)
Socket (TCP/IP)
Datagram (UDP/IP)
In-VM pipe
Pending:
Multicast
Serial and parallel port
<your favorite one>
December 13, 2005
ApacheCon US 2005

7. Elegant Application Design
Overview
Elegant Application Design
Unit test friendly
The Abstract API lets you test your application without a real client or server via mock objects.
Extensible
Runtime modification of application behavior using ‘filters’
Maintainable and Reusable
Separation of networking code (MINA), protocol codec, and business logic
December 13, 2005
ApacheCon US 2005
With High Productivity

8. Who Uses MINA? The Apache Directory Project
Overview
Who Uses MINA?
The Apache Directory Project
QuickFIX – QuickFIXEngine.org
Financial Information eXchange Protocol
RED5 Server – OSFlash.org
Macromedia Flash Media RTMP
JStyx – JStyx.sf.net
Styx, a file sharing NFS-like protocol
Proprietary SMPP / SMS servers
LDAP
Kerberos
DNS
NTP
December 13, 2005
ApacheCon US 2005

9. A Multipurpose Infrastructure for Network Applications
In-depth View
A Multipurpose Infrastructure for Network Applications

10. At the First Glance IoSessionManager IoFilters IoHandler IoSession
In-depth
At the First Glance
IoSessionManager
Where real I/O occurs
Generates I/O events
Processes I/O requests
IoFilters
Filters I/O events and requests
IoHandler
<Your protocol logic>
IoSession
Represents a connection
December 13, 2005
ApacheCon US 2005

11. And their implementations
In-depth
IoSessionManagers
Server-side: Accepts clients
Client-side: Connects to a server
And their implementations
December 13, 2005
ApacheCon US 2005

12. IoSession A connection between an IoHandler and a remote peer
In-depth
IoSession
A connection between an IoHandler and a remote peer
Provides ways to send an I/O request
Write a message
Close the current connection
State information
Idleness
Last I/O time
Transport layer parameters
Attributes: Protocol-specific data storage
December 13, 2005
ApacheCon US 2005

13. IoHandler Where you implement your network application In-depth
December 13, 2005
ApacheCon US 2005

14. IoFilter A reusable event & request interceptor Scope: Hot-deployable
In-depth
IoFilter
A reusable event & request interceptor
Hot-deployable
Scope:
An IoSession or an IoSessionManager
December 13, 2005
ApacheCon US 2005

15. IoFilter (Cont’d) Out-of-the box filters: Pending filters: SSL / TLS
In-depth
IoFilter (Cont’d)
Out-of-the box filters:
SSL / TLS
Remote peer blacklisting
Thread pool
Logger
Pending filters:
Profiler
Traffic throttle
Lightweight firewall
Overload prevention
December 13, 2005
ApacheCon US 2005

16. Thread Pooling with IoFilter
In-depth
Thread Pooling with IoFilter
December 13, 2005
ApacheCon US 2005

17. Protocol Codec By default, ProtocolCodecFilter is an IoFilter
In-depth
Protocol Codec
By default,
IoHandler uses a ByteBuffer to do I/O
Tight coupling of protocol codec and business logic :(
ProtocolCodecFilter is an IoFilter
Performs transformation between a ByteBuffer and a POJO (Plain Old Java Object)
Clear separation
December 13, 2005
ApacheCon US 2005

18. Protocol Codec (Cont’d)
In-depth
Protocol Codec (Cont’d)
December 13, 2005
ApacheCon US 2005

19. In-VM Pipe Transport Type
In-depth
In-VM Pipe Transport Type
A virtual pipe
Requires no protocol codec
I/O events and requests are converted into direct method invocations.
Two MINA servers in the same VM
Can bypass:
Protocol codec
Network latency
December 13, 2005
ApacheCon US 2005

20. A Multipurpose Infrastructure for Network Applications
Implementation Demo
A Multipurpose Infrastructure for Network Applications

21. More Complex Examples Realistic examples:
Demo
More Complex Examples
Realistic examples:
Visit Here: /subprojects/network/getting_started.html
December 13, 2005
ApacheCon US 2005

22. A Multipurpose Infrastructure for Network Applications
Future
A Multipurpose Infrastructure for Network Applications

23. MINA as a Platform Integration with Apache ASN.1 for complex protocols
Future
MINA as a Platform
Integration with Apache ASN.1 for complex protocols
Users can build customized servers with ready-made protocol codecs.
Just like drawing an ER Diagrams!
December 13, 2005
ApacheCon US 2005

24. Real-Time Management System
Future
Real-Time Management System
A universal management view
JMX console and Web browser
Real time access
Server traffic
IoFilter Hot-deploy
Which client is sending what message now?
Which message takes toolong to process?
And <what you want to monitor>
December 13, 2005
ApacheCon US 2005

25. We Need Your Participation!
Future
We Need Your Participation!
Sounds exciting?
Please help MINA team!
Try MINA
Ask questions
Criticize
Report bugs
Benchmark
Contribute code
Contribute a tutorial
December 13, 2005
ApacheCon US 2005

26. A Multipurpose Infrastructure for Network Applications
Conclusion
A Multipurpose Infrastructure for Network Applications

27. Conclusion
Conclusion
MINA is an extensible network application framework that helps you implement your network application elegantly without compromising productivity.
MINA can be a complete network application development & management platform if we get our effort together.
December 13, 2005
ApacheCon US 2005

28. Resources Homepage Mailing List
Mailing List
(Please use ‘[mina] prefix)
December 13, 2005
ApacheCon US 2005

29. Thank You!
Q & A