Extending Content Delivery Storage in SDL WEB 8.5 - Part 2

In the previous blog, we set up the project and configured all the required config and based on that we published a DCP and saw custom logs are available which means everything is working fine.

Today we are going to read the content of DCP and will see how Storage Extension work when we publish, re-publish and un-publish an item.

The Content is available in the form of Bytes and we need to convert that, below is the code snippet that will allow you to access the DCP content in your custom code.

public void create(ComponentPresentation itemToCreate, ComponentPresentationTypeEnum componentPresentationType)

throws StorageException

{

          super.create(itemToCreate,componentPresentationType);

          log.debug("Custom Code Create Method COMID :- " + itemToCreate.getComponentId());

          log.debug("Custom Storage create Method:- "+ itemToCreate.getContent());

          log.debug(String.valueOf(itemToCreate.getComponentId()));

          byte[] dcpComponent= itemToCreate.getContent();

          try

          {

                  componentPresentation = new String(dcpComponent,"UTF-8");

                  log.debug("Custom Storage create DCP :- " + componentPresentation);

          }

          catch (UnsupportedEncodingException ex)

          {

                  log.error("Custom Storage create Unsupported " + ex);

          }

}

DCP content

Publish a new component and in the deployer log file, you will see the DCP content but what will happen when we re-publish the same component or un-publish this. How we are going to manage that in the custom code, will see in the next blog, until then.

Happy Coding and Keep Sharing !!!

Extending Content Delivery Storage in SDL WEB 8.5 - Part 1

In this blog, We are going to extend the Storage layer in SDL WEB 8.5 but first, we need to set up the project and will make sure that the custom code interacts with the default process.

Pre-Requisites

1. Eclipse or you can use your favorite JAVA IDE. You can also follow my previous blog on how to set up the Project in Eclipse and generate custom JAR. [here]
2. JAVA 8
3. Default SDL JARs

We can customize the way existing items are stored by the Storage Layer using the DAO "Data Access Object" implementation pattern. We also need to extend JPAComponentPresentationDAO and implement ComponentPresentationDAO and this will allow us to extend the Storage Layer for Dynamic Component Presentation.

Step 1. Create a JAVA class file and add the following Namespaces.

import com.tridion.broker.StorageException;
import com.tridion.storage.ComponentPresentation;
import com.tridion.storage.dao.ComponentPresentationDAO;
import com.tridion.storage.persistence.JPAComponentPresentationDAO;
import com.tridion.storage.util.ComponentPresentationTypeEnum;
import java.io.UnsupportedEncodingException;
import java.util.Collection;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

Step 2.  Extends the class JPAComponentPresentationDAO and implement  ComponentPresentationDAO. We also need to insert a @Component and a @scope("prototype") statement between import statements and class definition and the following line of code.

Custom Storage Extension

Step 3. Create a storage DAO bundle config file.

Step 4. Copy this config file in the Deployer config folder and open the cd_storage config file in your favorite editor and add the following element.

Edit storage config file.

Step 5. Copy the Custom JAR file in the deployer and restart the deployer.

Custom JAR.

Step 6. We are done with code and configuration, now we need to publish the DCP and check the logs.

Logs

In the log file, we can see the custom log is available and it's returning the Component ID which means the code is interacting with the default process.


In the next blog, we will see the difference between other Methods, how our code will change on Publishing, Unpublishing and re-publishing and how to read DCP content, Until then.

Happy Coding and Keep Sharing !!!