DAM file InputStream is not reflecting original content in document management systems like Dropbox | Community
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ArpitBora
ArpitBora
New Participant
September 18, 2017
Solved

DAM file InputStream is not reflecting original content in document management systems like Dropbox

  • September 18, 2017
  • 14 replies
  • 6024 views

Hi All,

Is there any way to upload a file directly from AEM DAM location like "/content/dam/myFiles" to document management system like Dropbox.

I referred this article http://www.tothenew.com/blog/making-dropbox-documents-available-in-aem/ for "Making Dropbox documents available in AEM".

Using above article I'm able to download dropbox file into AEM DAM successfully, now I'm trying to upload a file from DAM location to Dropbox.

I referred the Dropbox Java Core API v2 as well and found following code for uploading a file to Dropbox :

// Upload "test.txt" to Dropbox
InputStream inputStream = new FileInputStream("test.txt");
FileMetadata metadata = client.files().uploadBuilder("/test.txt").uploadAndFinish(inputStream);

In above code, InputStream is required to upload a file into Dropbox, which is I'm able to retrieve using Asset Interface method getOriginal()

...
Asset asset = resource.adaptTo(Asset.class);
Resource original = asset.getOriginal();
InputStream inputStream = original.adaptTo(InputStream.class);
...

Here when I'm passing this retrieved InputStream from AEM into Dropbox upload method "uploadAndFinish(inputStream)", It is not uploading the file with its original form but as encrypted or corrupted form.

Please provide your suggestion and answers.

I'm Using AEM 6.2 instance.

Thanks,
Arpit Bora

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    Best answer by ArpitBora

    Thanks everyone for spending your valuable time on this issue,

    Using Dropbox REST call to "https://content.dropboxapi.com/1/files_put/auto/<path>?param=val " endpoint using ByteArrayPartSource class of "org.apache.commons.httpclient.methods.multipart.ByteArrayPartSource" package solve my issue,

    ...

    ByteArrayPartSource source = new ByteArrayPartSource(file.getName(),IOUtils.toByteArray(inputStream));

    ...

    Now I'm able to upload file succesfull to Dropbox

    Thanks and Regards,

    Arpit Bora

    14 replies

    VeenaVikraman
    VeenaVikraman
    New Participant
    September 20, 2017

    I vote for that

      smacdonald2008
      smacdonald2008
      New Participant
      September 20, 2017

      This would make an awesome HELPX article - if you want to submit your code to make it available in an AEM HELPX article - send me an email scottm@adobe.com. We will put your name on the article. This how the AEM Community scales and this will help ppl in the future.

      ArpitBora
      ArpitBoraAuthorAccepted solution
      New Participant
      September 19, 2017

      Thanks everyone for spending your valuable time on this issue,

      Using Dropbox REST call to "https://content.dropboxapi.com/1/files_put/auto/<path>?param=val " endpoint using ByteArrayPartSource class of "org.apache.commons.httpclient.methods.multipart.ByteArrayPartSource" package solve my issue,

      ...

      ByteArrayPartSource source = new ByteArrayPartSource(file.getName(),IOUtils.toByteArray(inputStream));

      ...

      Now I'm able to upload file succesfull to Dropbox

      Thanks and Regards,

      Arpit Bora

        ArpitBora
        ArpitBoraAuthor
        New Participant
        September 19, 2017

        I'm using java.nio.file.Files class probeContentType(Path path)method to retrive file mimeType.

        VeenaVikraman
        VeenaVikraman
        New Participant
        September 19, 2017

        ArpitBora​

             Since you are trying to upload the asset to Dropbox and not to DAM , this doesn't really answer your original question, but to make sure your input-stream is correct I would recommend you to use Asset Manager API to upload the assets programatically to DAM.

        You can find a sample here Adobe Experience Manager Help | Uploading files to Adobe Experience Manager DAM using AssetManager API

          I have a module in my project where we upload file to DAM daily using the below piece of code

        Here

        is = input stream

        filePath = path where you need the file to be uploaded (DAM path)

        The API is here com.day.cq.dam.api.AssetManager

             But to answer you original question, once you figure out that your inputstream is proper, we need to look in DropBox API direction and understand if you are missing any dots there.

        smacdonald2008
        smacdonald2008
        New Participant
        September 19, 2017

        See this article - it will show you how to query assets and then convert them to an input stream. In this article - the custom service places the assets into a ZIP file: Adobe Experience Manager Help | Downloading Adobe Experience Manager DAM Assets using Sling Servlets and the Query Build…

        VeenaVikraman
        VeenaVikraman
        New Participant
        September 19, 2017

        How are you fetching the mimeType ?

        VeenaVikraman
        VeenaVikraman
        New Participant
        September 19, 2017

        So that means, you are not reading the content properly.  I will try this and send you a working code may be ? Actually I think I have something similar somewhere , let me get it and share it ... But it won't be nothing different from whatever above all have commented .

        ArpitBora
        ArpitBoraAuthor
        New Participant
        September 19, 2017

        Hi kautuksahni I tried to save Stream to other JCR node (Asset node) like

        ...

        if (DamUtil.isAsset(resource)) {

             Asset asset = resource.adaptTo(Asset.class);

             if (asset != null) {

                 asset.addRendition("original", inputStream, mimeType);

                 session.save();

             }

             inputStream.close();

        }

        ...

        It is saving successfully but when I'm trying to open the file from my dam location it popup error box with message file content is corrupted.

        kautuk_sahni
        kautuk_sahni
        Employee
        September 19, 2017

        Can you save this Stream to the filesystem or at any other JCR node to validate if this is an issue with Inputstream or if Dropbox API need some configuration.

        ~kautuk

        Kautuk Sahni
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