Issue facing in AEM Workflow Custom Process Step

Question

We have written a custom workflow process that’s supposed to resize an image and create a new rendition whenever an asset is uploaded under /content/dam/projects. The code executes without throwing any errors, but the resized image isn't getting created, and I don’t see any new rendition added. Here's the snippet:@9944223
public void execute(WorkItem workItem, Session session, MetaDataMap metaData) {
    try {
        String path = workItem.getWorkflowData().getPayload().toString();
        ResourceResolver resolver = ...; // Get from service user or workflow session
        Resource resource = resolver.getResource(path);

if (resource != null && resource.adaptTo(Asset.class) != null) {
            Asset asset = resource.adaptTo(Asset.class);
            Rendition original = asset.getOriginal();

try (InputStream input = original.getStream()) {
                Layer layer = new Layer(input);
                layer.resize(800, 600); // Resize to 800x600

asset.addRendition("custom-resized", layer.getInputStream(), "image/jpeg");
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}I am not seeing any errors, but the resized rendition is not being saved. What could be the issue here?

SantoshSai · Accepted Answer

Hi @navyavo,I’m not entirely sure, but a few things might be going wrong here:Maybe the ResourceResolver you're using doesn’t have the necessary permissions to write to the DAM. If it’s not coming from a properly configured service user, the rendition might never get saved—even if no error is thrown.You might want to check if the resolver is obtained like this:resourceResolverFactory.getServiceResourceResolver(  Collections.singletonMap(ResourceResolverFactory.SUBSERVICE, "your-subservice-name"))And make sure the service user has write access to /content/dam. It’s possible that Layer isn't resizing the image correctly. This can happen if the input stream is invalid, or if the image format isn’t fully supported.Maybe add a quick log like:log.info("Original dimensions: {}x{}", layer.getWidth(), layer.getHeight());Just to confirm the resize is actually happening. Hope that helps!

ShivamKumar · Answer

Hi @navyavo ,

I think the logic that you have written is good, you just need to add below code after asset.addRendition() line to save all the changes.

resolver.commit();

It saves all the unsaved changes you’ve made using that Resource Resolver to the JCR repository (AEM’s content database).

Let me know if it works or you need more help.

Thanks.

Sign up

Login with SSO

Login to the community

Login with SSO

Scanning file for viruses.

This file cannot be downloaded