[AEM6.5] Servlet to Unpublish and Removing Bulk Assets [using path from CSV]

Question

Hi All,

I have asked a question https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/aem6-5-unpublish-and-removing-bulk-assets-using-path-from-csv/m-p/562317#M139982 [AEM6.5] Unpublish and Removing Bulk Assets [using path from CSV] from which I came across the best way to unpublish and then remove asset for one time will be the Groovy Script.
But there is change in requirement, is I have to write a servlet, which will read the assets path through CSV and then Unpublish and remove those assets from AEM instance.

I need help to correct the servlet or any other suggested psudo code:

import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.SlingHttpServletResponse;
import org.apache.sling.api.servlets.SlingAllMethodsServlet;
import org.apache.sling.servlets.annotations.SlingServletPaths;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.servlet.Servlet;
import javax.servlet.ServletException;
import java.io.*;
import java.util.ArrayList;
import java.util.List;

@Component(service = Servlet.class)
@SlingServletPaths(
        value = {"/test/unpublish"}
)
public class UnpublishAssetServlet extends SlingAllMethodsServlet {

    private static final long serialVersionUID = 1L;

    @Reference
    private PageManager pageManager;

    final Logger log = LoggerFactory.getLogger(UnpublishAssetServlet.class);

    @Override
    protected void doPost(SlingHttpServletRequest request,
                          SlingHttpServletResponse response) throws ServletException, IOException {

        String filePath = "/tmp/assetPath.csv";

        List<String> assetPaths = readFromCsv(filePath);

        for (String assetPath : assetPaths) {
            unpublishAsset(assetPath);
            deleteAsset(assetPath);
        }

        log.info("Successfully removed assets");
        response.getWriter().write("Successfully removed assets");

    }

    private List<String> readFromCsv(String filePath) {
        BufferedReader br = null;
        String line = "";
        String cvsSplitBy = ",";
        List<String> assetPaths = new ArrayList<String>();

        try {

            br = new BufferedReader(new FileReader(filePath));
            while ((line = br.readLine()) != null) {

                String[] values = line.split(cvsSplitBy);
                String assetPath = values[0];

                assetPaths.add(assetPath);
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

        return assetPaths;
    }

    private void unpublishAsset(String assetPath) {
        Page page = pageManager.getPage(assetPath);

        if (page != null) {
            try {
                pageManager.unpublish(page);
                log.info("Successfully unpublished asset at path " + assetPath);
            } catch (WCMException e) {
                log.error("Error unpublishing asset at path " + assetPath);
                e.printStackTrace();
            }
        }
    }

    private void deleteAsset(String assetPath) {
        try {
            pageManager.delete(assetPath, false);
            log.info("Successfully deleted asset at path " + assetPath);
        } catch (WCMException e) {
            log.error("Error deleting asset at path " + assetPath);
            e.printStackTrace();
        }
    }
}

Thanks

@arunpatidar @kautuk_sahni @theo_pendle @kiran_vedantam

aanchal-sikka · Accepted Answer

Hello @tushaar_srivastava

1. For publishing/unpublishing, we should use "com.day.cq.replication.Replicator" API. Example:

@Reference
private Replicator replicator;

replicator.replicate(session, ReplicationActionType.ACTIVATE, path);

2. We are dealing with assets here, but using PageManager. May be I am missing a point, as why PageManager is needed. If its for deleting asset, then please use Resourceresolver.

For deleting any resource you can use, resourceResolver.delete(resource);

Avinash_Gupta_ · Answer

Hi @tushaar_srivastava

There is no need to use PageManager API as you are dealing with assets. As @aanchal-sikka has mentioned, use that code snippet to unpublish and delete the assets. Session object also provides you the option to remove the item.

session.removeItem("/content/dam/nextgen/Ehub-POD/image1.jpg")
if (session.hasPendingChanges()) {
    session.save();        
}

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