Sukesh: 2017

Tuesday, December 19, 2017

Wednesday, September 13, 2017

Sonar In Hybris

Download SonarQube from https://www.sonarqube.org/downloads/
Install/Unzip the SonarQube in a directory
Create a new mysql db "CREATE DATABASE sonar"
Set the db properties in sonar.properties file

sonar.jdbc.username=
sonar.jdbc.password=
sonar.jdbc.url=jdbc:mysql://localhost:3306/sonar?useUnicode=true&characterEncoding=utf8&rewriteBatchedStatements=true&useConfigs=maxPerformance&useSSL=false

Put the mysql driver in the directory sonarqube-6.5\extensions\jdbc-driver
Set the following properties in sonar.properties file

sonar.web.context=/sonar
sonar.web.javaOpts=-server -Xmx512m -Xms128m -XX:+HeapDumpOnOutOfMemoryError
sonar.search.port=0

Start sonar qube via >StartSonar.bat and access localhost:9000/sonar
login using admin/admin
Go to http://localhost:9000/sonar/profiles and restore the hybris official profile java-hybris-profile-public.xml

Set Hybris Official profile as the default java profile
Download the ant task jar sonarqube-ant-task-2.5.jar and put it in config/customize/platform/resources/ant/sonar/lib
Now there are two ways to run sonar profiler using 1) a new sonar build file and 2)existing hybris sonar build file

1) a new sonar build file

Create an ant file with the following contents

value="jdbc:mysql://localhost:3306/sonar?useUnicode=true&characterEncoding=utf8" />

value="Hybris Java Project analyzed with the Sonar Ant Task" />

Go to the directory and run the above ant file. You will see the sonar is updated with a new project with name "Sonar Build for Hybris"

2)existing hybris sonar build file

Add the following properties to local.properties file

sonar.language=java
sonar.projectName=HYB SONAR
sonar.projectKey=HYB SONAR
sonar.projectVersion=1.0
sonar.excludedExtensions=acceleratorcms,acceleratorfacades,acceleratorservices,acceleratorstorefrontcommons,addonsupport,captchaaddon,commercefacades,platformservices
sonar.jdbc.url=jdbc:mysql://localhost:3306/sonar?useUnicode=true&characterEncoding=utf8&rewriteBatchedStatements=true&useConfigs=maxPerformance

Copy platform/resources/ant/sonar.xml into /config/customize/platform/resources/ant and change the following references in the file

replace the existing sonarqube-ant-task jar file wih the new sonarqube-ant-task-2.5.jar file
replace all "sonar.binaries" with "sonar.java.binaries"
replace all "sonar.libraries" with "sonar.java.libraries"

In hybris/bin/platform execute "ant customize sonar" to apply the above customisations
In hybris/bin/platform execute "ant customize sonar" to apply the above customisations
Now a project named HYB SONAR is created in sonar

Ref : https://wiki.hybris.com/display/hybrisALF/Measuring+Code+Quality+with+Sonar

Monday, July 31, 2017

Creating a New Custom Cache Region in Hybris

Create a new cahce region bean in core-cache.xml spring file. The below code is to cache only the products

<constructor-arg name="name" value="productCacheRegion" />

<constructor-arg name="maxEntries" value="50000" />

<constructor-arg name="evictionPolicy" value="LFU" />

<array>

</array>

</property>

</bean>

Access caching by using the DefaultCacheController

Reference

Hybris Region Cache

Webserver based media serving in Hybris

Create an extension called staticmedia with a new class named ApacheMediaUrlStrategy that implements MediaURLStrategy interface. By default Hybris uses a base-64 encoded context request parameter that will not work properly in Apache. The ApacheMediaUrlStrategy uses a folder stategy so that apache can directly point to that directory. The below code in the class returns back //hostName/static/media/ in witch mediaHostUrl is an instance variable in ApacheMediaUrlStrategy class that contains hostName/static/media

return new StringBuilder(mediaHostUrl.length() + location.length() + 3).append("//").append(mediaHostUrl).append('/').append(location).toString();

Add configuration properties to the local.properties to specify the mediaHostUrlwith an appropriate URL that points to you media serving apache layer and change the mediaurlstrategy

media.apachemedia.url=

media.folder.images.url.strategy=apacheMediaURLStrategy

Add the new strategy to the staticmedia-spring.xml file

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://www.springframework.org/schema/beans

    http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="apacheMediaURLStrategy" class="com.package.staticmedia.media.url.impl.ApacheMediaUrlStrategy">

        <property name="mediaHostUrl" value="#{configurationService.configuration.getProperty('media.apachemedia.url')}" />

    </bean>

</beans>

Create ysynch to copy the image contents to the media.apachemedia.url
Modify httpd.conf file to hanlde the media url inside the VirtualDirectory with 7 days of cache expiry for images and 10 minutes for the _ui directory

SetEnvIf Request_URI "^/images/*" no-jk
Alias /images /opt/hybris/media/sys_master/images "/opt/hybris/media/sys_master/images">
Options Indexes FollowSymLinks MultiViews
        AllowOverride None
        Order allow,deny
        Allow from all
        Header append Cache-Control public,max-age=604800

    SetEnvIf Request_URI "^/_ui/*" no-jk
    Alias /_ui /opt/hybris/storefront/web/webroot/_ui    "/opt/hybris/storefront/web/webroot/_ui">
        Options FollowSymLinks MultiViews Indexes
   AllowOverride None
        Order allow,deny
        Allow from all
        Header append Cache-Control public,max-age=600
Reference
Hybris Wiki Static Contents from Apache
Wiki Versioned Static content

Thursday, March 16, 2017

Hybris Vertical Cluster Configuration with Apache mod_jk configuration

Hybris is having its own cluster setup and hence instead of using the application server cluster configuration the hybris cluster configuration has to be used. For the demonstration purpose I have used two instances of hybris instances in the same machine and an Apache HTTP Server as a load balancer with the help of mod_jk

Hybris Cluster Setup

Make sure that both the instances of the hybris is having same code and using the same db.
Configure both instances to point to the same stand alone solr server. For reference see the link Solr Clustering and Replication in Hybris
Since both instances are running on the same machine, to avoid the port conflict change the ports in the second instance via following link Changing default ports in hybris
In case of vertical clustering and unicast we need to specify separate ports and if we are using other methods then same configuration has to be used in all the nodes even in case of vertical clustering
Enter the following values in the local.properties file in both the hybris isntances

#clustering
clustermode=true
cluster.nodes.autodiscovery=true
cluster.nodes.ping.interval=10000
cluster.nodes.stale.timeout=30000

Unicast

#unicast
cluster.broadcast.methods=unicast
cluster.broadcast.method.unicast.serveraddress=localhost
cluster.broadcast.method.unicast.clusternodes=localhost:9997 ; localhost:19997

JGroups

cluster.broadcast.methods=jgroups

cluster.broadcast.method.jgroups=de.hybris.platform.cluster.jgroups.JGroupsBroadcastMethod

cluster.broadcast.method.jgroups.tcp.bind_addr=localhost

cluster.broadcast.method.jgroups.tcp.bind_port=7800

cluster.broadcast.method.jgroups.channel.name=hybris-broadcast

cluster.broadcast.method.jgroups.configuration=jgroups-udp.xml

Give the following changes in first instance
- Add the following values in the local.properties file in case unicast for other methods no change required
  - cluster.broadcast.method.unicast.port=9997
- Add the following values in the server.xml file of conf directory see the link HTTP Server mod_jk configuration to load balance Tomcat instances in Hybris

Give the following changes in seond instance
- Add the following values in the local.properties file
  - cluster.broadcast.method.unicast.port=19997
- Add the following values in the server.xml file of conf directory see the link HTTP Server mod_jk configuration to load balance Tomcat instances in Hybris

Apache HTTP Server Load Blancer Setup
Follow the linnk HTTP Server mod_jk configuration to load balance Tomcat instances in Hybris