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I am unable to find the configuration setting, where my ECL dll is referred to from the SDL CM side.

I have checked, and its not there in the Tridion.ContentManager.config.

Is there any standard. Any help is much appreciated.

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Mountpoints configured in ExternalContentLibrary.xml

Every mountpoint element has attribute type (e.g type="My Custom Provider")

Every provider has main class that implements IContentLibrary

And this class must have attribute AddIn (e.g [AddIn("My Custom Provider", Version = "1.0.0.0")])

Name in AddIn attribute in class matched with type attribute in mountpoint xml, and this how ECL find proper dll for particular mountpoint.

Example:

In ExternalContentLibrary.xml

    <MountPoint type="My Custom Provider" id="mcp" rootItemName="Test">

In main class of provider 

    [AddIn("My Custom Provider", Version = "1.2.0.0")]
    public class MyProvider : IContentLibrary
    {
      ...
    }
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Actually, those settings are available in the ExternalContentLibrary.xml file under

C:\{SDLWEB Installation Folder}\Config\

You can find mount points for each of your ECL links, Example: 

<MountPoint type="Local File System Provider" id="ffs1" rootItemName="Digital Assets Management">
  <StubFolders>
    <StubFolder id="tcm:1-633-2" />
    <StubFolder id="tcm:8-733-2" />
  </StubFolders>
  <PrivilegedUserName>SDLPE\SDL</PrivilegedUserName>
  <FolderPath>C:\Working Areas\ECL\DAM</FolderPath>
  <IconIdentifier>DamLibrary</IconIdentifier>
  <IconURL>http://tridion.sdldemo.com/WebUI/Editors/CME/Themes/Carbon/Images/ECLIcons/</IconURL>
</MountPoint>

Hope this helps to make changes to ECL configuration and move forward

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  • Yes. This is there. But, how does SDL Tridion know where to pick up the ECL Custom DLL from? – guest_2017 Apr 6 '17 at 8:23
  • Tricky undocumented question :) – Rajesh Apr 6 '17 at 12:03
  • Actually, those are picked from the following location, C:\ProgramData\SDL\SDL Tridion\External Content Library\AddInPipeline\AddIns Remember, though you use SDL Web, it still picks up from SDL Tridion folder Don't forget to mark the answer if this helps resolving your issue – Rajesh Apr 6 '17 at 12:04
  • You are correct about the path. My Custom ECL dll is placed in - C:\ProgramData\SDL\SDL Tridion\External Content Library\AddInPipeline\AddIns, and ExternalContentLibrary.xml is under `{Tridion Home}\config` folder. But, I am not sure how the dll is referred to if it is under a different location and XML under different location. Is is the standard path and SDL will pick it up from this location? That is my real question. – guest_2017 Apr 6 '17 at 13:31
  • Ok, as you are trying to understand the concept rather than looking for a quick solution, I have now updated the example code. You can specify the location of the dll as well, but note that the type ="Local File System Provider". For any other type, I believe it will try to look inside the programdata location which I mentioned earlier and will not consider the external path even if specified. – Rajesh Apr 6 '17 at 17:42
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This entry should be in the Tridion.ContentManager.config file Under {Tridion Home}\config\ folder.

Search for extensions tag. Under that tag you can find the entry for ECL Library. If it is not there then add that entry like below - 

<extensions>    
<add assemblyFileName="D:\Tridion\bin\Tridion.ExternalContentLibrary.TcmExtension.dll" /> 
</extensions>
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  • Yes. This is there. Now, I have an adapter code, which is used to fetch media items from a 3rd party via a service. This is a separate dll, that is also deployed at another location, in the same CM server. Now my question is, how is SDL using it? As I do not see any reference to this custom DLL in any config files. Also it is using the ExternalContentLibrary.xml located in the {Tridion Home}\config\ folder, where the URL for this 3rd party is mentioned. – guest_2017 Apr 6 '17 at 8:41
  • Tridion.ExternalContentLibrary.TcmExtension.dll - has nothing to do with ECL adapters – Yuri Bondarchuk Apr 21 '17 at 7:44
  • Correct @YuriBondarchuk ..!! And thank you for giving a clear explanation as well. – guest_2017 May 9 '17 at 13:58

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