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Wednesday, February 21, 2018

Caused by: java.lang.NoClassDefFoundError: javax/management/InstanceAlreadyExistsException while connecting to Oracle Database from OSGI - Adobe Experience Manager(AEM)

Caused by: java.lang.NoClassDefFoundError: javax/management/InstanceAlreadyExistsException while connecting to Oracle Database from OSGI - Adobe Experience Manager(AEM)

I was getting the below exception while connecting to the Oracle 11g database using ojbdc6.jar from OSGI in Adobe Experience Manager(AEM)

20.02.2018 15:43:39.259 *INFO* [CM Event Dispatcher (Fire ConfigurationEvent: pid=com.day.commons.datasource.jdbcpool.JdbcPoolService.c26da860-d7f1-4e63-9b2c-1138a6bafaeb)] day.commons.datasource.jdbcpool Configuring and activating data source with name=SampleOracleDS
20.02.2018 15:43:39.260 *ERROR* [CM Event Dispatcher (Fire ConfigurationEvent: pid=com.day.commons.datasource.jdbcpool.JdbcPoolService.c26da860-d7f1-4e63-9b2c-1138a6bafaeb)] day.commons.datasource.jdbcpool [com.day.commons.datasource.jdbcpool.JdbcPoolService(2238)] The activate method has thrown an exception (java.lang.IllegalArgumentException: Cannot initialize driver 'oracle.jdbc.driver.OracleDriver')
java.lang.IllegalArgumentException: Cannot initialize driver 'oracle.jdbc.driver.OracleDriver'
at com.day.commons.datasource.jdbcpool.JdbcPoolService.initalizeDriver(JdbcPoolService.java:301)
at com.day.commons.datasource.jdbcpool.JdbcPoolService.setupDataSource(JdbcPoolService.java:227)
at com.day.commons.datasource.jdbcpool.JdbcPoolService.activate(JdbcPoolService.java:174)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.felix.scr.impl.helper.BaseMethod.invokeMethod(BaseMethod.java:222)
at org.apache.felix.scr.impl.helper.BaseMethod.access$500(BaseMethod.java:37)
at org.apache.felix.scr.impl.helper.BaseMethod$Resolved.invoke(BaseMethod.java:615)
at org.apache.felix.scr.impl.helper.BaseMethod.invoke(BaseMethod.java:499)
at org.apache.felix.scr.impl.helper.ActivateMethod.invoke(ActivateMethod.java:295)
at org.apache.felix.scr.impl.manager.SingleComponentManager.createImplementationObject(SingleComponentManager.java:302)
at org.apache.felix.scr.impl.manager.SingleComponentManager.createComponent(SingleComponentManager.java:113)
at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:832)
at org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:799)
at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:749)
at org.apache.felix.framework.ServiceRegistrationImpl.getFactoryUnchecked(ServiceRegistrationImpl.java:343)
at org.apache.felix.framework.ServiceRegistrationImpl.getService(ServiceRegistrationImpl.java:243)
at org.apache.felix.framework.ServiceRegistry.getService(ServiceRegistry.java:357)
at org.apache.felix.framework.Felix.getService(Felix.java:3671)
at org.apache.felix.framework.BundleContextImpl.getService(BundleContextImpl.java:470)
at org.apache.felix.scr.impl.manager.SingleRefPair.getServiceObject(SingleRefPair.java:72)
at org.apache.felix.scr.impl.helper.BindMethod.getServiceObject(BindMethod.java:576)
at org.apache.felix.scr.impl.manager.DependencyManager.getServiceObject(DependencyManager.java:2037)
at org.apache.felix.scr.impl.manager.DependencyManager.invokeUnbindMethod(DependencyManager.java:1712)
at org.apache.felix.scr.impl.manager.SingleComponentManager.invokeUnbindMethod(SingleComponentManager.java:392)
at org.apache.felix.scr.impl.manager.DependencyManager$MultipleDynamicCustomizer.removedService(DependencyManager.java:372)
at org.apache.felix.scr.impl.manager.DependencyManager$MultipleDynamicCustomizer.removedService(DependencyManager.java:303)
at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:1518)
at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:1413)
at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.untrack(ServiceTracker.java:1273)
at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1452)
at org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:987)
at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:838)
at org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:545)
at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4547)
at org.apache.felix.framework.Felix.access$000(Felix.java:106)
at org.apache.felix.framework.Felix$1.serviceChanged(Felix.java:436)
at org.apache.felix.framework.ServiceRegistry.unregisterService(ServiceRegistry.java:165)
at org.apache.felix.framework.ServiceRegistrationImpl.unregister(ServiceRegistrationImpl.java:140)
at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.unregister(AbstractComponentManager.java:883)
at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.unregister(AbstractComponentManager.java:857)
at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:140)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.unregisterService(AbstractComponentManager.java:925)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.doDeactivate(AbstractComponentManager.java:774)
at org.apache.felix.scr.impl.manager.AbstractComponentManager.deactivateInternal(AbstractComponentManager.java:757)
at org.apache.felix.scr.impl.manager.SingleComponentManager.reconfigure(SingleComponentManager.java:601)
at org.apache.felix.scr.impl.manager.SingleComponentManager.reconfigure(SingleComponentManager.java:552)
at org.apache.felix.scr.impl.config.ConfigurableComponentHolder.configurationUpdated(ConfigurableComponentHolder.java:419)
at org.apache.felix.scr.impl.config.ConfigurationSupport.configurationEvent(ConfigurationSupport.java:297)
at org.apache.felix.cm.impl.ConfigurationManager$FireConfigurationEvent.sendEvent(ConfigurationManager.java:2032)
at org.apache.felix.cm.impl.ConfigurationManager$FireConfigurationEvent.run(ConfigurationManager.java:2002)
at org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:103)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: javax/management/InstanceAlreadyExistsException
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at com.day.commons.datasource.jdbcpool.JdbcPoolService.initalizeDriver(JdbcPoolService.java:299)
... 54 common frames omitted
Caused by: java.lang.ClassNotFoundException: javax.management.InstanceAlreadyExistsException not found by com.jdbc.oracle [446]
at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1557)
at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:79)
at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1998)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 59 common frames omitted

Based on the analysis the classes required by the ojdbc.jar is missing in the generated bundle.

Steps to fix the issue -

Refer the following post for complete steps to integrate Adobe Experience Manager(AEM) with Oracle Database - https://www.albinsblog.com/2015/03/how-to-connect-to-oracle-database-using.html

Add the below Import-Package in META-INF\MANIFEST.MF file

Import-Package: javax.sql, javax.naming, javax.management, org.ietf.jgss


import-package-oracle-osgi-driver


  • Generate the bundle by adding the above configuration(Export --> Deployable plug-ins and fragments)
  • Delete the bundle if already exist in the server
  • Install the updated bundle
  • Restart the server
  • Test the integration






How to extend the OOB Adobe Experience Manager(AEM) Hybris connector

How to extend the OOB Adobe Experience Manager(AEM) Hybris connector

This video explains the details on extending the OOB Adobe Experience Manager(AEM) Hybris connector with custom functionalities








Saturday, February 17, 2018

Approach to implement content preview environment in Adobe Experience Manager(AEM)

Approach to implement content preview environment in Adobe Experience Manager(AEM)


By default Adobe Experience Manager(AEM) not provides the preview instance to preview the content before publishing to live environment but most of the cases preview is required before publishing the content to live environment.

This post explain the approach to preview and approve the content before publishing to live environment.

The below diagram explains the preview flow

AEM_Preview_environment


  • Author creates the content in production author and start the workflow
  • Workflow sends the content to Stage author and Publishers
  • Workflow assign the task to approver group and send the notification email
  • Approver reviews the content in stage environment and approve or reject the content (workflow)t - provides the detailed information for rejection
  • if the content is approved 
    • Workflow sends the approved content to production publishers.
  • If the content is rejected
    • Workflow assign the task to author and sends the notification
    • Author review the details and completes the workflow
    • Start the process again by correcting the content

Define Replication process step with ECMA script:


Create ecma file replicate.ecma under /etc/workflow/scripts/<<application>>  e.g. /etc/workflow/scripts/blog - This ecma script helps to replicate the content to stage environments


var workflowData = workItem.getWorkflowData();
var path = workflowData.getPayload().toString();
var session = workflowSession.getSession();

var replicator = sling.getService(Packages.com.day.cq.replication.Replicator);
var options = new Packages.com.day.cq.replication.ReplicationOptions();

for(var i=0;i<args.length;i++) {
    var agent= args[i];
    var filter = new Packages.com.day.cq.replication.AgentIdFilter(agent);
    options.setFilter(filter);
    options.setSuppressStatusUpdate(true);
    try {
        replicator.replicate(session, Packages.com.day.cq.replication.ReplicationActionType.ACTIVATE, path, options);
} catch(e) {
    log.error("Cannot replicate page : " + path +"on publisher. (agentId: " + agent + "): " + e);
}
}

AEM_preview_environment_approver