Apache Etch Introduction @ FOSDEM 2011

Feb 7, 20112 likes16,394 views

Apache Etch is a framework for building efficient and feature-rich network services. It allows for symmetric and asynchronous communication between nodes. Services can be described independently of programming language or transport mechanism. Etch provides a flexible protocol stack and supports languages like Java, C#, C, and Go. It aims to support additional transports, languages, security features, and tools over time.

Apache Etch.
Apache Etch
Grandy/Fitzner
BMW Car IT GmbH
Feb. 2011
Page 1

Efficient and feature-rich
network services.

BMW Car IT GmbH

Apache Etch
Grandy/Fitzner
BMW Car IT GmbH
Apache Etch.
Feb. 2011
Page 2 What is Etch?

framework for building network services

Key facts:

symmetric
sychronous, two-way and
asynchronous, one-way
error handling
timing constraints
convenient service description
fast & efficient
scalable: from phones to backend servers
modular architecture
language & transport independent

Apache Etch
Grandy/Fitzner
BMW Car IT GmbH
Apache Etch.
Feb. 2011
Page 3 Network Service Description.
module org.apache.etch.demo

service helloworld{
string hello(string msg)
}

Node Node

process

spawn thread

wait process request

terminate thread

process

Apache Etch
Grandy/Fitzner
BMW Car IT GmbH
Apache Etch.
Feb. 2011
Page 4 Symmetric two-way communication.
service helloworld{
@Direction(server)
string hello(string msg)

@Direction(client)
string askSomething(string question)
}

Client Server

process

Apache Etch
Grandy/Fitzner
BMW Car IT GmbH
Apache Etch.
Feb. 2011
Page 5 Asynchronous one-way Communication.
service helloworld{
@Direction(server)
@Oneway
void hello(string msg)

@Direction(client)
@Oneway
void howdy(string msg)
}

Client Server

process

process

process
asynchronous

Apache Etch
Grandy/Fitzner
BMW Car IT GmbH
Apache Etch.
Feb. 2011
Page 6 Error handling & user data.
service helloworld{
struct User ( string name )

exception UserUnknownException ( string message )

@Timeout(500)
void hello(User user, string msg)
throws UserUnknownException
}
Node Node

Apache Etch
Grandy/Fitzner
BMW Car IT GmbH
Apache Etch.
Feb. 2011
Page 7 Non-functional aspects.

Programming language independent:
Bindings are currently available for
- Java
- C#
- C
- Google Go (alpha version), Javascript (alpha version)

Transport independent:
- default transport is TCP using a binary encoding
- adding new transports is simple
- XML available e.g. for C#,JavaScript binding

Tooling:
- Wireshark support
- basic Maven integration
- Eclipse plugins are underway

Efficiency (measured on a desktop system):
- ~ 40.000 asynchronous one-way calls per second
- ~ 15.000 blocking two-way calls per second

Apache Etch
Grandy/Fitzner
BMW Car IT GmbH
Apache Etch.
Feb. 2011
Page 8 Architecture.

fully symmetric, flexible protocol stack for client and server

Application Application

Stub Remote generated Stub Remote

DeliveryService call stubs / forward requests DeliveryService
Mailbox Mailbox
Mailbox MailboxManager manage requests / responses MailboxManager Mailbox
Mailbox Mailbox

Messagizer serialization Messagizer

Packetizer byte[] Packets Packetizer

Transport e.g. TCP, SSL Transport

Implemented the same way for Java, C#, C, Go

Apache Etch
Grandy/Fitzner
BMW Car IT GmbH
Apache Etch.
Feb. 2011
Page 9 Roadmap.

- more transports (e.g. UDP, Serial, ...)
- more languages (first steps for JavaScript, Python exist)
- naming service
- discovery
- web service gateway
- more security
- better IDE support
- better maven integration
- message routing, broker
- ...
Where do you want to go?

Apache Etch
Grandy/Fitzner
BMW Car IT GmbH
Apache Etch.
Feb. 2011
Page 10 Find out more.

Website
www.incubator.apache.org/etch

Mailing Lists
etch-dev@incubator.apache.org
etch-user@incubator.apache.org

Contributors: (initial development done @ Cisco)
Rene Barrazza, Seth Call, Scott Comer, James
DeCocq, James Dixson, Michael Fitzner, Holger Grandy,
J.D. Liau, Youngjin Park, Gaurav Sandhir

Speaker contact:
Holger.Grandy@bmw-carit.de

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Apache Etch Introduction @ FOSDEM 2011

1. Apache Etch. Apache Etch Grandy/Fitzner BMW Car IT GmbH Feb. 2011 Page 1 Efficient and feature-rich network services. BMW Car IT GmbH

2. Apache Etch Grandy/Fitzner BMW Car IT GmbH Apache Etch. Feb. 2011 Page 2 What is Etch? framework for building network services Key facts: symmetric sychronous, two-way and asynchronous, one-way error handling timing constraints convenient service description fast & efficient scalable: from phones to backend servers modular architecture language & transport independent

3. Apache Etch Grandy/Fitzner BMW Car IT GmbH Apache Etch. Feb. 2011 Page 3 Network Service Description. module org.apache.etch.demo service helloworld{ string hello(string msg) } Node Node process spawn thread wait process request terminate thread process

4. Apache Etch Grandy/Fitzner BMW Car IT GmbH Apache Etch. Feb. 2011 Page 4 Symmetric two-way communication. service helloworld{ @Direction(server) string hello(string msg) @Direction(client) string askSomething(string question) } Client Server process

5. Apache Etch Grandy/Fitzner BMW Car IT GmbH Apache Etch. Feb. 2011 Page 5 Asynchronous one-way Communication. service helloworld{ @Direction(server) @Oneway void hello(string msg) @Direction(client) @Oneway void howdy(string msg) } Client Server process process process asynchronous

6. Apache Etch Grandy/Fitzner BMW Car IT GmbH Apache Etch. Feb. 2011 Page 6 Error handling & user data. service helloworld{ struct User ( string name ) exception UserUnknownException ( string message ) @Timeout(500) void hello(User user, string msg) throws UserUnknownException } Node Node

7. Apache Etch Grandy/Fitzner BMW Car IT GmbH Apache Etch. Feb. 2011 Page 7 Non-functional aspects. Programming language independent: Bindings are currently available for - Java - C# - C - Google Go (alpha version), Javascript (alpha version) Transport independent: - default transport is TCP using a binary encoding - adding new transports is simple - XML available e.g. for C#,JavaScript binding Tooling: - Wireshark support - basic Maven integration - Eclipse plugins are underway Efficiency (measured on a desktop system): - ~ 40.000 asynchronous one-way calls per second - ~ 15.000 blocking two-way calls per second

8. Apache Etch Grandy/Fitzner BMW Car IT GmbH Apache Etch. Feb. 2011 Page 8 Architecture. fully symmetric, flexible protocol stack for client and server Application Application Stub Remote generated Stub Remote DeliveryService call stubs / forward requests DeliveryService Mailbox Mailbox Mailbox MailboxManager manage requests / responses MailboxManager Mailbox Mailbox Mailbox Messagizer serialization Messagizer Packetizer byte[] Packets Packetizer Transport e.g. TCP, SSL Transport Implemented the same way for Java, C#, C, Go

9. Apache Etch Grandy/Fitzner BMW Car IT GmbH Apache Etch. Feb. 2011 Page 9 Roadmap. - more transports (e.g. UDP, Serial, ...) - more languages (first steps for JavaScript, Python exist) - naming service - discovery - web service gateway - more security - better IDE support - better maven integration - message routing, broker - ... Where do you want to go?

10. Apache Etch Grandy/Fitzner BMW Car IT GmbH Apache Etch. Feb. 2011 Page 10 Find out more. Website www.incubator.apache.org/etch Mailing Lists [email protected] [email protected] Contributors: (initial development done @ Cisco) Rene Barrazza, Seth Call, Scott Comer, James DeCocq, James Dixson, Michael Fitzner, Holger Grandy, J.D. Liau, Youngjin Park, Gaurav Sandhir Speaker contact: [email protected]

Apache Etch Introduction @ FOSDEM 2011

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