Using RabbitMQ and Netty library to implement RPC protocol

Nov 9, 2014Download as pptx, pdf5 likes3,470 views

This document discusses different solutions for implementing services for a real-time communication service called Rubichat across Java and PHP platforms. It proposes a solution where PHP invokes Java API remotely using an RPC approach, with the Java server using Netty and messages formatted in XMPP over JSON. Performance tests showed this third solution was faster than directly accessing services from PHP. Future work could include generating data mappers and optimizing clients.

Tho Luong
SILILAB Vietnam
Hanoi, March 1, 2014
Rubichat

Introduction
2
 Rubichat:
 A Realtime Communication Service
 Allow website owner to communicate with customer
more easily

Introduction
4
 Rubichat:
 A Realtime Communication Service
 Allow website owner to communicate with customer
more easily
 Easy to setup:

Architecture
X user Facebook user Customer and operator
X1 X2 crane crane
RabbitMQ
tractor tractor
Java, php, spring, hibernate, amqp,
nodejs, zend framework, netty
sensor Apache
?
MySQL, Redis and MongoDB

Issue
6
 Develop rubiweb project in PHP using Zend
Framework
 Some services were implemented in Java (30%)
 Should we implement other services in Java or PHP
or both of them?
 3 solutions

Solution #1
7
 Reimplement all services in PHP
 Some services will be implemented in both Java
and PHP  not a big problem
 PHP and Zend work well with MySQL, do they
still work well with MongoDB and Redis?
 Just some services use MongoDB and Redis
 not a big problem

Solution #1
8
 When Java wants to use a service that is
implemented in PHP  port this implementation to
Java?
 Some services are hard to implement, ex: access
control service
Solution #1: complicated and not easy for
maintainance.

Solution #2
9
 Beauty and maintainability are #1 priority
 All services will be implemented in Java
 PHP calls Java service implementations remotely
via RabbitMQ
e2
PHP Java
e1
req
resp
OK

Solution #2
10
 Problem: how to receive response properly?
PHP -01
PHP-02
Resp-01
Resp-02
 Mission impossible

Solution #2
11
 How about using one queue for each PHP request?
PHP-01
PHP-02
….. ….. e
PHP-n
 At least, one “dirty” queue is produced after each
PHP request lifecycle
No, RabbitMQ must manage a lot of queues.

Solution #3
12
 RPC: PHP invokes Java API remotely
PHP
Java
Server
X protocol
 Issues:
1. System architecture
2. Protocol selection
Flappy
3. Technology selections for Java Server

System architecture
13
 Option 1: flappy accesses database directly
PHP
Java
Server
X protocol
Flappy
MySQ
L
Mong
oDB
Redis
 Option 2: flappy serves PHP connections, access
service implentations via RabbitMQ
PHP
Java
Server
Flappy
RabbitMQ
MySQ
L
Mong
oDB
Redis
Tractor
Tractor
…..
…..

Protocol selection
14
 Common RPC protocols
 XML RPC
 JSON RPC
 Protobuf (google)
 Thrift (facebook)
 SOAP
 Flappy uses XMPP (RFC 3920,RFC 3921) message
format
 Easy to control
 Familiar to Rubichat developers

XMPP in JSON format
15
 Stanza: IQ
 Stanza: M

Binary data format
16
 Data type: 1 byte
 RABBIT_TRACTOR_IN,
RABBIT_TRACTOR_OUT, FLAPPY_IN,
FLAPPY_OUT, NA
 Length: int: 4 byte
 Body
type length body
1 4 length

Technologies selection
17
 Socket library: Netty, a great library for network
application
 Twitter uses Netty to improve search engine
performance. (3x faster)
 Interceptor design in Tractor server is influenced by
Netty

Netty advantages
18
 Asynchronous I/O: decouple threads from Client
Socket Connections
 Rich Buffer data structure
 Advanced Components for More Rapid
Development
 Event Model based on the Interceptor Chain
Pattern

Test result
19
 Create 100 users, find them and measure time:
Service Query Tractor(ms) Client (ms) Δ (ms)
Create 100 5196 5665 469
Find 1 187 203 16
Service Query Tractor(ms) Client (ms) Δ (ms)
Create 100 4414
Find 1 34
(New FlappyClient implementation: use single connection(March 26, 2014))

Solution disadvantages
21
response
PHP
Java Server
Flappy
.phpModel
ToJSON()
request
.jsonTo
PhpModel()
.jsonTo
JavaModel()
.javaModel
ToJSON()
 Write data-mappers
manually

Future work
22
 Tool for generating data mappers
 Optimize PHP FlappyClient and develop clients for
other languages

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Using RabbitMQ and Netty library to implement RPC protocol

1. Tho Luong SILILAB Vietnam Hanoi, March 1, 2014 Rubichat

2. Introduction 2  Rubichat:  A Realtime Communication Service  Allow website owner to communicate with customer more easily

3. Rubichat: customer & operator 3

4. Introduction 4  Rubichat:  A Realtime Communication Service  Allow website owner to communicate with customer more easily  Easy to setup:

5. Architecture X user Facebook user Customer and operator X1 X2 crane crane RabbitMQ tractor tractor Java, php, spring, hibernate, amqp, nodejs, zend framework, netty sensor Apache ? MySQL, Redis and MongoDB

6. Issue 6  Develop rubiweb project in PHP using Zend Framework  Some services were implemented in Java (30%)  Should we implement other services in Java or PHP or both of them?  3 solutions

7. Solution #1 7  Reimplement all services in PHP  Some services will be implemented in both Java and PHP  not a big problem  PHP and Zend work well with MySQL, do they still work well with MongoDB and Redis?  Just some services use MongoDB and Redis  not a big problem

8. Solution #1 8  When Java wants to use a service that is implemented in PHP  port this implementation to Java?  Some services are hard to implement, ex: access control service Solution #1: complicated and not easy for maintainance.

9. Solution #2 9  Beauty and maintainability are #1 priority  All services will be implemented in Java  PHP calls Java service implementations remotely via RabbitMQ e2 PHP Java e1 req resp OK

10. Solution #2 10  Problem: how to receive response properly? PHP -01 PHP-02 Resp-01 Resp-02  Mission impossible

11. Solution #2 11  How about using one queue for each PHP request? PHP-01 PHP-02 ….. ….. e PHP-n  At least, one “dirty” queue is produced after each PHP request lifecycle No, RabbitMQ must manage a lot of queues.

12. Solution #3 12  RPC: PHP invokes Java API remotely PHP Java Server X protocol  Issues: 1. System architecture 2. Protocol selection Flappy 3. Technology selections for Java Server

13. System architecture 13  Option 1: flappy accesses database directly PHP Java Server X protocol Flappy MySQ L Mong oDB Redis  Option 2: flappy serves PHP connections, access service implentations via RabbitMQ PHP Java Server Flappy RabbitMQ MySQ L Mong oDB Redis Tractor Tractor ….. …..

14. Protocol selection 14  Common RPC protocols  XML RPC  JSON RPC  Protobuf (google)  Thrift (facebook)  SOAP  Flappy uses XMPP (RFC 3920,RFC 3921) message format  Easy to control  Familiar to Rubichat developers

15. XMPP in JSON format 15  Stanza: IQ  Stanza: M

16. Binary data format 16  Data type: 1 byte  RABBIT_TRACTOR_IN, RABBIT_TRACTOR_OUT, FLAPPY_IN, FLAPPY_OUT, NA  Length: int: 4 byte  Body type length body 1 4 length

17. Technologies selection 17  Socket library: Netty, a great library for network application  Twitter uses Netty to improve search engine performance. (3x faster)  Interceptor design in Tractor server is influenced by Netty

18. Netty advantages 18  Asynchronous I/O: decouple threads from Client Socket Connections  Rich Buffer data structure  Advanced Components for More Rapid Development  Event Model based on the Interceptor Chain Pattern

19. Test result 19  Create 100 users, find them and measure time: Service Query Tractor(ms) Client (ms) Δ (ms) Create 100 5196 5665 469 Find 1 187 203 16 Service Query Tractor(ms) Client (ms) Δ (ms) Create 100 4414 Find 1 34 (New FlappyClient implementation: use single connection(March 26, 2014))

20. 20 Demo: 1. Flappy Server 2. Tractor

21. Solution disadvantages 21 response PHP Java Server Flappy .phpModel ToJSON() request .jsonTo PhpModel() .jsonTo JavaModel() .javaModel ToJSON()  Write data-mappers manually

22. Future work 22  Tool for generating data mappers  Optimize PHP FlappyClient and develop clients for other languages

23. Thank you! 23

Using RabbitMQ and Netty library to implement RPC protocol

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