How to fetch current page in sling model

See also questions close to this topic

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• How to run Garabge Collection of BlobStore in Jackrabbit Oak?

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  SegmentGCOptions gcOptions = SegmentGCOptions.defaultGCOptions().setEstimationDisabled(true);
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  Then, I create a blob and later I delete it.

  The file associated to the blob is still on the file system, and, in my understanding, a garbage collection is needed in order to actually have it removed.

  What's the proper way to run the Garbage Collector?

  By reading the documentation - and taking into account that the whole thing is NOT run within an Osgi container - it seems that you should call MarkSweepGarbageCollector#collectGarbage(false), but it's not clear to me what are supposed to be the arguments of the constructor (or whether I can get a reference to an instance from some other data structure) - for instance:

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                      null) // no idea what it is this - but it's allowed to be null
  

  This way the blob is NOT deleted - with very little surprise, given that it's unclear to me what the parameters exactly are, and the exact purpose/meaning of some phases (e.g. the blobs are "marked", but I wasn't able to find out what this "mark" means - even by looking at the code…).

  I have also tried to call fileStore.fullGC(); before collectGarbage (thinking that maybe the blob wasn't deleted because of some "stale" data), but with no luck.

  Maybe the blob is not deleted because it's referenced in the versions history?

  If so, what's the proper way to get rid of the blob - firstly delete the version history (how?) and then run the garabage collection?

  ---

  I did some more investigations, and I also created a mini-program that replicate the issue:

  • you can find the program here on github
  • by following the program flow step-by-step, imo the issue is that, in the "mark" phase (that is when the GC looks for blobs that are actually still "in use"), the deleted blob reference is still there, i.e. it is still present in the BinaryReferencesIndex; therefore, it is marked, and consequently, begin both marked and available, it is not even considered a "candidate" for sweeping.

  I think that maybe this could have something to do with the way I add the blob: code follows, please refer to the above github for full context:

  Node rootFolder = session.getRootNode();
  Node fileNode = rootFolder.addNode(temporaryFile.getName(), "nt:file");
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  Node fileContentNode = fileNode.addNode("jcr:content", "nt:resource");
  fileContentNode.setProperty("jcr:data", "");
  session.save();
  
  Blob blob = nodeStore.createBlob(FileUtils.openInputStream(temporaryFile));
  NodeBuilder rootBuilder = nodeStore.getRoot().builder();
  NodeBuilder fileContentNodeBuilder = getNodeBuilder(fileContentNode, rootBuilder);
  fileContentNodeBuilder.setProperty("jcr:data", blob);
  nodeStore.merge(rootBuilder, EmptyHook.INSTANCE, CommitInfo.EMPTY);
  session.save();
  
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  ResourceResolver getServiceResourceResolver() throws LoginException;
  
  void closeResourceResolver(ResourceResolver resourceResolver);
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  public class ResourceResolverServiceImpl implements ResourceResolverService {
  
      @Reference
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      Logger logger = LoggerFactory.getLogger(ResourceResolverServiceImpl.class);
  
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      @Override
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  }
  

  I do have the osgi config setup by following tutorial http://www.aemcq5tutorials.com/tutorials/resourceresolver-from-resourceresolverfactory/

  But in my actually even handler class, it never successfully resolved resource resourceResolver is not able to resolve /content/myproject/us/en , resourceResolver keep give me null value

  Could anyone experienced this suggest me some code sample to resolve my issue? thanks
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  2. SlingHTTPRequest can help obtain resource with the use of .getResource method anyway, so using SlingHTTPServeltRequest class alone, with required dependencyInjectionStrategy should be sufficient, and Resource class as an adaptable is never needed?

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