“Framework Principal" patternPhilippe Rabier - twitter.com/prabierSophiacom

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Why this presentation?

• What is a Framework Principal?

• Starter class automatically instantiated, very early

• Used to initialize your stuffs

• Independent from the Application

• @see ERXFrameworkPrincipal

What is the goal?

Resource optimization!

Feedback from You ’N Push

Sandbox environment

1 application

Back Office FTP Server Web Services

Job SchedulerIn-App

Purchase Service

Push Notification

Service

Production environment

Back Office FTP Server Web Services

Job SchedulerIn-App

Purchase Service

Push Notification

Service

4 applications

How to do that?

Not rocket science!

• Make your FP runnable. Change the build.properties like this: principalClass=ca.wowodc.pascal.util.MyFrameworkPrincipal

• Create an empty Wonder application

• Add the frameworks to the classpath

• Choose a rule for your properties file names like Properties.staging or Properties.production

• Set your properties

• Set the appropriate user name in the WOMonitor configuration

• …et voilà!

The Recipe

Skeleton of a FP public static boolean serviceMustRun()

{ return ERXProperties.booleanForKeyWithDefault("myServiceToLaunch", false); }

public void finishInitialization() { if (serviceMustRun() ) { // your code ... } }

public boolean isServiceRunning() { return a condition; }

Skeleton of a Properties file

#Launch first servicefirstServiceToLaunch=true

#second service is not runningsecondServiceToLaunch=false

WOMonitor configs

The application will look for Properties.production file

The application will look for Properties.sandbox file

2 Strategies

• Only one application

• user name is different for each application

• ex: Properties.scheduler, Properties.backoffice, …

• Several specialized applications

• user name is the same for every app like Properties.production

• applications are different: scheduler.woa, backoffice.woa, …

Do you know?

• ERRest can be configured in a FP (set up the request handler, the routes, …)

• D2W applications could be defined in a FP (the ERXNavigationManager loads all navigationMenu.plist in any frameworks, the rules can be anywhere, …).

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Q&A“Framework Principal" pattern