atlascamp 2014: a p2 plugin and a saas platform walk into a bar

June 3-5, 2014 | Berlin, Germany

A P2 Plugin and a SaaS Platform Walk

Into a Bar…Jonathan Doklovic, Principal Developer, Atlassian

Stuff That Came out of Developing Atlassian Connect That Can Help

Make Writing P2 Plugins and Even Plain Old Java Projects Easier And

More Efficient

Jonathan Doklovic, Principal Developer, Atlassian

Nomenclature

P2

P2Connect Addons

P2

P2

P2

Building Made Easy

Git Flow

Git Flow vs.

GIT Flow + MavenK I S S Y O U R S A N I T Y G O O D B Y E

I want to merge A LOT

without conflicts!

Screw conflicts, I

want to change poms !

A LOT!

I want SNAPSHOTS!

I want to add files to your

working folder

I want to assume you only have one

master branch and commit to source control

myself!

Maven JGIT Flow Plugin

• No need to install git-flow!

• No maven-release-plugin!

• Smartly manages version changes between branches!

• Full GIT Flow lifecycle / merge strategy!

• Extra “goodies” for dealing with CI

K I S S T H E M A V E N R E L E A S E P L U G I N G O O D B Y E

bitbucket.org/atlassian/jgit-flow

Transformers Are Evil

<atlassian-plugin key="${project.groupId}.${project.artifactId}" name="${project.name}" plugins-version="2"> <plugin-info> <description>${project.description}</description> <version>${project.version}</version> <vendor name="${project.organization.name}" url="${project.organization.url}" /> ! <bundle-instructions> <Export-Package> com.atlassian.upm.api.util*;version="${upm.version}" </Export-Package> </bundle-instructions> </plugin-info> ! <component-import key="applicationProperties" interface="com.atlassian.sal.api.ApplicationProperties" /> ! <component key="someComponent" class="com.atlassian.example.SomeComponentClass" /> !</atlassian-plugin>

atlassian-plugin.xml

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<context:component-scan base-package="org.example"/> </beans>

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<context:component-scan base-package="org.example"/> </beans>

@Component @Autowired

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<atlassian-scanner:scan-indexes/> </beans>

@Named@Inject@JiraComponent@ConfluenceComponent@ClasspathComponent

@ComponentImport

@ConfluenceImport@JiraImport

@ExportAsService@ExportAsDevService

Atlassian Spring Scanner

• No jar transforms!

• No runtime classpath scanning!

• Moves all component related things into java!

• Makes OSGi BND actually work!

• Compile time scanning == super fast plugin loads

K I S S T R A N S F O R M S A N D C L A S S PAT H S C A N N I N G G O O D B Y E

bitbucket.org/atlassian/atlassian-spring-scanner

How Do You Install Nothing?

P2 ==

Dynamic Plugin Modulesbitbucket.org/atlassian/atlassian-pocketknife

• Modules are registered as OSGi Services!

• Complete control over module lifecycle!

• Super fast startup!

• No longer confined to what’s in atlassian-plugin.xml!

M A G I C A L M O D U L E S A P P E A R A N D D I S A P P E A R

Live, Breathe and Eat Code; Spit Out Docs

XSD

XSD

+

json-schema Generator

• Generate json-schema from JAVA POJOs!

• Easy to use annotations!

• Schema can be validated with ANY json-schema validator!

• Plain Ol’ JAVA library can be embedded in anything

json-schema + Maven

• Generate json-schema from JAVA POJOs!

• Easy to use annotations!

• Schema can be validated with ANY json-schema validator!

• Now embedded in a Maven plugin!

• Adds javadocs as schema descriptions!

• Compile time generation

json-schemagen

bitbucket.org/atlassian/json-schemagen

• json-schema from JAVA POJO’s!

• Runs as a Maven plugin!

• Javadocs included in schema!

• Easily generate example code!

• Keep you docs in your DVCS!

• Never let your docs get out of date!

W R I T E C O D E N O T D O C S

bitbucket.org/atlassian/jgit-f low

bitbucket.org/atlassian/atlassian-spring-scanner

bitbucket.org/atlassian/json-schemagen

bitbucket.org/atlassian/atlassian-pocketknife

Resources

Get In TouchHere At AtlasCamp

doklovic@atlassian.com

@sysbliss