AEM/ Adobe CQ: Version controlling

CQ uses svn by default.

Filevault ( VLT)is used when we need crx file system to be available in local system(like accessing code using eclipse).

Create back up of crx code using file vault

To set up the filevault, we need to unzip the filevault file and configure its bin path to system path variable.

Export project from CQ to local machine

c:\CQ5_training\backup>vlt --credentials admin:admin export -v http://localhost:4505/crx /apps/training .

Above command creates a jcr_root folder in backup folder and put all files from crx

Import Project from Local file system to CQ

c:\CQ5_training\backup>vlt --credentials admin:admin import -v http://localhost:4505/crx . /apps/training

Once user credential is entered, it is not required again bcz, the user credential is saved in user directory> vault folder as an xml file.

Checkout just directory structure, not entire project

backup>vlt -co http://localhost:4505/crx/-/jcr:root/apps/training .

Identify locally modified files, execute below command.

jcr_root>vlt -st

Identify difference in local and crx files, execute below command.

jcr_root>vlt -diff complex/components/test.jsp

jcr_root>vlt diff will give all changed fields comparison in jcr_rot checked out directory

commit changes to code repository:

All files:

jcr_root>vlt - ci

Single file commit:

jcr_root>vlt - ci filename

Note: ci,st,diffcommaond only works withchecked out code , not exported code.

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Filevault commands reference:

Command             Description

export             Export the Vault filesystem   import            Import a Vault filesystem   checkout (co)      Checkout a Vault file system   analyze            Analyze packages status (st)        Print the status of working copy files and directories. update (up)        Bring changes from the repository into the working copy. info               Displays information about a local file. commit (ci)        Send changes from your working copy to the repository. revert (rev)       Restore pristine working copy file (undo most local edits). resolved (res)     Remove 'conflicted' state on working copy files ordirectories. propget (pg)       Print the value of a property on files or directories. proplist (pl)      Print the properties on files or directories. propset (ps)       Set the value of a property on files or directories. add                Put files and directories under version control. delete (del,rm)    Remove files and directories from version control. diff (di)          Display the differences between two paths. rcp                Remote copy of repository content.   sync               Control vault sync service   console            Run an interactive console

Workflow, performance monitoring, logging in AEM

Workflow:

Used to automate process involved in page creation to publish.

http://localhost:4505/libs/cq/workflow/content/console.html

Launcher workflow enables to automate the workflow in AEM.

·         Instance tab shows running workflows which can be suspended or cancelled.

·         Models list all work flows created.

·         Archive : shows completed workflows

·         Failures: Shows all the failed workflows.

Error /Failure in Workflow custom process "Process implementation not found: "

The reason may be you are creating bundle using CRXDELite and below codes are commented.

#Export-Package: *

#Import-Package: *

Solution:So you have to uncomment to get the workflow success.

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Performance:

Logging

Request.log files will have all requests logged. Monitoring this log is the best way to track performance issues. We can also use some profilers to tackle the performance issues.

Tool helps to track last few requestsAuthor\crx-quickstart\opt\helpers > rlog.jar

To access logs,

From command prompt reach to the location of rlog.jar then > execute java -jar rlog.jar -n 10  ../../logs/request.log will give all slowest responses.

Readable: http://dev.day.com/docs/en/cq/current/deploying/performance.html

Timing chart URL will also help to find the performance timing of any page loading.

Common performance improvement methods: http://helpx.adobe.com/experience-manager/kb/performancetuningtips.html

AEM/CQ Common issues

Rectify Content Assist issue in AEM/ Adobe CQ(5.6)

-------------------------------------------------

We need CRXDE to have installedfuture pack to get content assist for JSP pages

Download link: http://blogs.adobe.com/livecycle/2012/06/developers-faq-on-cq5-5.html

·         Missing crx de libs(missing-crxde-libs.zip) to be install through package manager.

·         Now rename or delete user>.crxde folder, restart the crxde so that content assist works fine.

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Notes: Some times cq5.6 gives error on jsp pages. Remove below codes to avoid issues:

header.jsp

<cq:include path="toptoolbar" resourceType="foundation/components/toolbar"/>

footer.jsp

<cq:include path="toolbar" resourceType="foundation/components/toolbar"/>

Error /Failure in Workflow custom process "Process implementation not found: "

The reason may be you are creating bundle using CRXDELite and below codes are commented.

#Export-Package: *

#Import-Package: *

Solution:So you have to uncomment to get the workflow success.

AEM OSGi Bundles:

OSGi Bundles:

Open Services Gateway Initiative (OSGi) helps developing and deploying modular applications and libraries in Java.Some of the major OSGi container implementations are Equinox, Knopflerfish, and Apache Felix. OSGi works on a set of services that an OSGi container must implement and a contract between the container and your application.

Resource folder can be used to put resource files like configuration files, xml files properties files etc.

Meta data of bundles:

·         Export-Package: *

Tells to export all packages to cq - makes available to cq

If we mention,

Export-Package: com.cq.test; it just makes this package available

·         Import-Package: *

Tells to import all packages from other bundles to our bundle - makes available to use those clases.

·         Private-Package:

Packages that should not be exposed to the OSGi container

·         Include-Resource:

used to include resource files like properties files available to our bundle.

Bundle-Activator Class:

Start() and stop() are the lifecycle of bundle activator class.

stop() can be implemented if any resource to be stopped, if our bundle failure happens abruptly.

public void stop(BundleContext context) throws Exception

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OSGi Vs JAR

-------------------

OSGi can be told as an advanced version of JAR. It uses more metadata to show/hide the visibility of classes in bundle. JAR is a private collection of classes where OSGI provides a safe way to make the classes available across.

Sample to create anAEM /Adobe CQ bundle and use it in a page

-------------------------------------------------------

Create the folder structure as below.

Create a bundle by right clicking on src folder. Enter the details as required.

Now the new bundle will have below structure.

Now under the test folder create an impl folder. This is used to write our custom Java class.

Now add TestService.class with a common output as below.

-------------

packagecom.cq.adobe.test.impl;

public class TestService{

public String getTestService(){

return "CQ developer training sessions";

    }

}

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Right click com.adobe.test.bnd and build bundle (Tools>Build Bundle)

This creates jar file under install folder which is automatically placed to OSGi packages.