Peergreen Platform Overview

Peergreen Platform
Guillaume Sauthier
guillaume.sauthier@peergreen.com
@sauthieg
17/05/2013

© 2013 Peergreen, Confidential & Proprietary
Plan
• Overview
• In depth
o Guidelines
o Boot
o Deployment System
o Shell
o Web
o Console
o Security
o Development
• Next

Overview
• Peergreen
o Startup
o Experienced engineers
o Open source contributions

Available today
• Peergreen Server M1
o Light-weighted integrated server (<3MB)
o OSGi “application” support
o Effective deployment system
• Peergreen Eclipse Plugin
o Leverage Eclipse OSGi framework support
Downloadable from our web site
www.peergreen.com

Guidelines
• Built-in extensibility and dynamism
• Fast, fast, fast
• Right sized
• User and applications as first class citizen
“Everything should be made as simple as possible but no simpler”
A. Einstein

Boot
• User’s very first impression
o Easy to execute
o Fast

Boot
• All-in-one executable artifact
• Few seconds to boot on modern machines
• Mechanisms in use
o Jar introspection
o Jar compression
o Classloader for accessing jar in jar’s content
o Maven plugin for building specific assembly
 Select underlying OSGi framework
 Select initial Bundles set with start levels (if any)

Boot

Boot
• Wrap up
o Boot in a few seconds
o event:* commands to observe boot time
o Simple launch procedure

Deployment System
• Core system block
o Native multi-thread support
o Plug-able service-based architecture
o Artifact centric
 Faceted artifacts
o Deployed resource neutral
 Location (remote, local, access protocol)
 Type (bundle, web-app, …)
o Operation reporting (errors, …)
o Persistence
• Supported artifacts
o OSGi Bundle
o OSGi Configuration Admin
o OW2 JOnAS deployment plan
o Java EE Web applications
ready
C
B A

Deployment System
• Artifact
o Resource to be deployed, URI location
• Facet
o Specialized view of the artifact (Web, Bundle,
ConfigAdmin, …)
• Processor
o Express requirements (for automatic placement)
o Handle the archive
 Produce a facet
 Use a facet
 “Glue” the artifact on an external system
 …
Artifact
C
B
A

Deployment System
• Processing artifacts
o Collection of artifact handled simultaneously
o Execute concurrently or sequentially a set of Processors
o Dynamic resolution of runnable processors
• Phase
o Container of Processors
o Logical ordering
• Processor
o Installed in a phase
o Stateless
o Express requirements
 Enabled only if resolved
discovery
per-facet
OSGi
install
start
Web
read-web
configure
start

Deployment System
• Global discovery phase
o Sub-phases executed sequentially
o Processors in phases executed concurrently
uri-fetcher uri-resolver facet-scanner
facet-
conflicts
dependency-
finder

Deployment System
• Per-facet lifecycle
o Sequence of phases
o Runnable processor of phase are executed concurrently (when
possible)
o Facet lifecycle phase can be traversed simultaneously by multiple
artifacts
web
xml
install
start
bundle
install
start
ca
read
create

Deployment System
• Extensions
o Contribute Processors
 Bound to a phase, requiring facet and/or artifact attributes
o Contribute Lifecycle for a facet
 Define the sequence of phases for DEPLOY, UNDEPLOY and
UPDATE

Deployment System
• Artifact model
o Artifacts are stored in a model
 With meta-information
• Processor’s chain
• Execution time
 Deployment root ?
 Transformed artifact
o Query-able
 Service API available
 CLI
plan
plan
web ejbjar
mvn
bundle

Deployment System

Deployment System
• Wrap up
o OW2 JORAM deployment plan
 Bundles activated (loaded from maven repository)
o OW2 JORAM configuration files
 Configurations started and services instances registered
o OW2 JOnAS compatibility

Shell
• OW2 Shelbie based
o Modular & dynamic
o Apache Felix iPOJO integration
o Sweetness
 Completion
 ANSI
 Easy command programming (@Command, @Option and @Argument)

Shell
• Built-in command scopes
o Gogo & Felix commands
o Shelbie built-in commands
 exit / shutdown
 help
o iPOJO commands
o Config-admin commands
o Java VM commands
 Threads management (dump, stop/interrupt threads, deadlocks)
o MBeans commands
 JMX handling (get / set attributes, introspect mbeans, …)
o Deployment commands
 List deployed artifacts, print reports, …
o Newsfeed commands (RSS)
o Security commands
 Realm management

Shell

Shell
• Wrap up
o Completion
o Help system
o Remote telnet access
o Threads reporting
 Deadlock detection
 Thread interruption

Web
• Supports of web application
o Java EE standard web app (.war)
o HttpService implementation
• Servlet 3.0 / JSP 2.2 / EL 2.2
• Apache Tomcat 7.0.39
M2

Web
• Deployment system integration
o Facet contribution (phases description)
o Processors
 Webapp type detection and facet installation
 Context configuration
 Context start
M2
Generic
Tomcat
Tomcat
DEPLOY parse deploy start
UPDATE stop parse start
UNDEPLOY stop undeploy

Web
• Classloading
o Java EE Web archives assume permissive classloading
environment
 Not a nice fit within an OSGi gateway :’(
o Needs a special bundle with the ugly
 DynamicImport-Package *
 Special classloader delegating to this bundle used as Webapp’s parent
classloader
M2
not very proud :’(

Web
• Injection
o Default Tomcat InstanceManager has to be replaced
 Imports all of the Java EE packages (@EJB, …)
 Hardcoded behavior
o Peergreen InstanceManager
 Supports @Resource on BundleContext
 Limited imports
 Abstractable to be usable for other components
M2
Modularity :’(
Evolution :’(
OSGi binding :-)
OSGi friendly :-)
Work in progress

Web
• HttpService
o Tomcat-based implementation
o Servlet 3.0 support
o Good enough to run Apache Felix Webconsole :-)
M2

Web
M2

Web
• Wrap up
o Java EE War deployment
o Usable HttpService with Apache Felix Webconsole
M2

Console
• Highly modular and extensible web console
o Foundation for our products’ consoles
o External contributions
 Business modules
o Vaadin framework selected
 HTML 5 support
 Mature On-going OSGiTM integration
 GWT under the hood
• Responsive client application
 Nice look and feel
M2

Console
• Foundation
o Base application layout
 Scopes containing tabbed views
o Theme
 Shared across contributed views
o Unified login page
o Notification service
o Extensibility through OSGi services
 Do not think extension points !
M2

Console
M2

Console
• Wrap up
o Views contributions
o Server interactions
 Start/Stop bundle
o Notifications
 Badge
 Overlay
M2

Security
• Security needs to be there from the beginning
o Protect access to the server
 Authentication
 Authorization
o Administrative entry points
 Shell console
 Web console
 JMX
 . . .
M2

Security
• Account management
o Storing accounts securely
 Hashing
 Persistence
• Services APIs
o HashService
 Encrypt clear text password into byte[]
• Plain text, MD5, Salted SHA, …
o EncoderService
 Transform the byte[] into a persistable String
• Base64, Hexa, Text, …
o AccountStore
 Manage store content
M2
admin
joe
jane
HashService
AccountStore
EncoderService
extensibility

Security
• Command line
o User management
 CRUD
o Role management
 Assignment
M2

Security
M2

Security
• Wrap up
o User creation
o Password modification
o Local console is secured
o Tomcat realm connected to AccountStore
M2

Development
• Building applications
o Eclipse support
o Maven support

Development
• OSGi FrameworkFactory API
o Standard API to launch OSGi frameworks
 Apache Felix
 Eclipse Equinox
 . . .
o Peergreen Server also implements it
Peergreen Server executable jar is usable directly
from consumer of that API !
• Pax Exam
• OW2 JOnAS
• . . .

Next (soon)
• Java Transaction API
o On-going work on OW2 JOTM
• Java Persistence API
o @PersistenceContext support
o On going work on OW2 EasyBeans
• JNDI
o JNDI / OSGi integration
M2

Next (later)
• Web console
o More supported contributions
 Menu bar
 Progress view
• REST
o Jersey integration
• EJB
o EasyBeans integration
• HttpService
o Java EE annotations support (@WebServlet)
o Filter and Listener
M?

Next
• Release plan
o Scheduled release every 2 months
M?
M1
April
M2 June
M3
August
M4
October

Questions

Picture resources
• http://www.flickr.com/photos/tales2astonish/7436776110/
• http://www.flickr.com/photos/richard_jones/4352200167/
• http://www.flickr.com/photos/richard_jones/4352196667

Peergreen Platform Overview

Recomendados

Recomendados

Mais conteúdo relacionado

Mais procurados

Mais procurados (20)

Destaque

Destaque (9)

Semelhante a Peergreen Platform Overview

Semelhante a Peergreen Platform Overview (20)

Mais de Guillaume Sauthier

Mais de Guillaume Sauthier (14)

Último

Último (20)

Peergreen Platform Overview