topic RE: Blue prism PDF Toolkit VBO - Need information in Product Forum

Blue prism PDF Toolkit VBO - Need information

ParnabSinha_Cho — Tue, 13 Jul 2021 09:58:00 GMT

I saw that Blue prism launched PDF Toolkit VBO in Digital Exchange. We are planning to use the same to deal with invoices. To proceed do we need ADOBE READER PRO installed as well or Adobe Document Services account will be enough for the same?

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Parnab Sinha Choudhury
RPA Developer / Business Analyst
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RE: Blue prism PDF Toolkit VBO - Need information

ewilson — Tue, 13 Jul 2021 11:04:00 GMT

See the thread below.

https://community.blueprism.com/communities/community-home/digestviewer/viewthread?GroupId=385&MessageKey=bccecde1-e142-4373-aa57-a7a55b0f82f9&CommunityKey=1e516cfe-4d1f-4de9-a9eb-58d15bf38c81&tab=digestviewer&ReturnUrl=%2fcommunity-discussions%2fallrecentposts&SuccessMsg=Thank%20you%20for%20submitting%20your%20message.

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Eric Wilson
Director, Partner Integrations for Digital Exchange
Blue Prism
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RE: Blue prism PDF Toolkit VBO - Need information

Janu — Fri, 04 Mar 2022 19:27:00 GMT

Hi Eric!

We are currently using BP 6.6 Version, soon we will be upgrading to 6.7. Is the PDF toolkit is compatible with these version or it has any dependencies?
Please advice.

Thanks
Janu

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Janu RPA Developer
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RE: Blue prism PDF Toolkit VBO - Need information

ewilson — Fri, 04 Mar 2022 20:32:00 GMT

Hi @Janu,

There is a note in the user guide that states it should work with BP versions back to v6.5, but as it's only been officially tested as far back as v6.9. I'd suggest you read through the Prerequisites section of the user guide and follow its recommendations. I'd also strongly suggest making a backup of your Blue Prism Automate folder before changing any DLLs as described in the user guide.

Cheers,

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Eric Wilson
Director, Integrations and Enablement
Blue Prism Digital Exchange
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RE: Blue prism PDF Toolkit VBO - Need information

Tejaskumar_Darji — Wed, 09 Mar 2022 06:38:00 GMT

I'm also trying to use this adobe VBO but struggling with many of the DLL dependencies. Do we have any direct link to get all relevant DLLs?

I checked documentation which provides screenshot of all required DLL.

It also require specific version of DLL only and not the updated or backdated versions.

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Thanks & Regards,
Tejaskumar Darji
Sr. RPA Consultant-Automation Developer
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RE: Blue prism PDF Toolkit VBO - Need information

GeoffHirst — Wed, 09 Mar 2022 13:59:00 GMT

HI,

Thank you for using Blue Prism.

The DLL dependencies are significant. The documentation does state that the NuGet package, available here. Now, the best way to move forward with this is if you have Visual Studio. If you don't have Visual Studio, you can download the free Community edition from the Microsoft website.

If you create a solution, any kind, but a console is the simplest, and then go to manage nuget packages under the Solution Explorer by right clicking the solution. You will be presented with the NuGet package manager screen and if you search for the PDF Toolkit you should find version 2.2.

If you then install this into your console solution it will then provide all the dependency files. You can then locate them if you navigate to the folder where you created your console solution. You can see the exact pathname by looking at the properties of one of the dll dependencies you can copy/paste this into a file explorer window and this will take you to your solution where you can locate all the dependency dll's you need.

Once again, thank you for using Blue Prism. Please come back here if you need more help.

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Geoff Hirst
Consultant - Digital Exchange - EMEA
Blue Prism
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RE: Blue prism PDF Toolkit VBO - Need information

Tejaskumar_Darji — Thu, 16 Jun 2022 17:47:00 GMT

Hi @Geoff Hirst,

After trying a lot we extracted all DLLs using Visual Studio and copied all DLLs to Automate directory.

Used Adobe.PDFServicesSDK.dll V2.2.1.0

After that when I run I still keep getting errors related to DLL.

Here it requires System.Buffer 4.0.2.0 but we got 4.6.28619.01 from VS. (Also tried to directly download 4.0.2.0 System.Buffer but not available on Nuget or any other web)

It seems like if one DLL gets fixed then another pops up hence we are struggling a lot to get this VBO to work.

Can you help us with this?

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If I was of assistance, please vote for it to be the "Best Answer".

Thanks & Regards,
Tejaskumar Darji
Sr. Consultant-Technical Lead
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RE: Blue prism PDF Toolkit VBO - Need information

devneetmohanty07 — Fri, 17 Jun 2022 02:31:00 GMT

Hi Tejas,

You can try to download the latest version of the Adobe.PDFServicesSDK 2.2.1

Ensure you download the DLL from net461 folder as shown below and place it inside the Blue Prism installation folder:

When I tried the same on my Blue Prism v6.10.4 it is working without any errors:

Just to add version of the Blue Prism client here can also affect the inclusion of some of the default DLL's here in this case. Can you also let us know which version of Blue Prism are you using for the same?
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Hope it helps you out and if my solution resolves your query, then please mark it as the 'Best Answer' so that the others members in the community having similar problem statement can track the answer easily in future

Regards,
Devneet Mohanty
Intelligent Process Automation Consultant | Sr. Consultant - Automation Developer,
WonderBotz India Pvt. Ltd.
Blue Prism Community MVP | Blue Prism 7x Certified Professional
Website: https://devneet.github.io/
Email: devneetmohanty07@gmail.com

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RE: Blue prism PDF Toolkit VBO - Need information

GeoffHirst — Fri, 17 Jun 2022 07:00:00 GMT

Hi Tejas,

Thank you for being an SS&C Blue Prism customer and for using Blue Prism. The issue you are experiencing is because of how the .NET framework handles backward compatibility. In .NET, when an assembly has been updated and a new one is available, applications can use what is called an assembly redirect to redirect calls for an old assembly to a new one. This is done using the app.config file. Unfortunately we are not able to use this route with Blue Prism so we need to tell our code to redirect at runtime, using code.

Please could you check you have the latest version of the asset and also the latest version of the PDFServices package, as Devneet has already recommended. The latest version of the DX asset will have a global code function as shown below.

public static void RedirectAssembly(string shortName, Version targetVersion, string publicKeyToken) {
	ResolveEventHandler handler = null;

	handler = (sender, args) => {
		// Use latest strong name & version when trying to load SDK assemblies
		var requestedAssembly = new AssemblyName(args.Name);
		if (requestedAssembly.Name != shortName)
			return null;

		requestedAssembly.Version = targetVersion;
		requestedAssembly.SetPublicKeyToken(new AssemblyName("x, PublicKeyToken=" + publicKeyToken).GetPublicKeyToken());
		requestedAssembly.CultureInfo = CultureInfo.InvariantCulture;

		AppDomain.CurrentDomain.AssemblyResolve -= handler;

		return Assembly.Load(requestedAssembly);
	};
	AppDomain.CurrentDomain.AssemblyResolve += handler;
}

Please come back to me if you are still having problems.

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Geoff Hirst
Senior DX Engineer - Digital Exchange - EMEA
SS&C Blue Prism
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RE: Blue prism PDF Toolkit VBO - Need information

Tejaskumar_Darji — Fri, 17 Jun 2022 09:00:00 GMT

Thank you Devneet for your response.

I'm using BP 6.10.4 and Adobe.PDFServicesSDK 2.2.1

This time I tried to take a new DLL from the net461 folder as you suggested but notice the same error.

And it does not throw this error in the blue prism studio but when any action is run that time it throws this error in the Output data item.

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If I was of assistance, please vote for it to be the "Best Answer".

Thanks & Regards,
Tejaskumar Darji
Sr. Consultant-Technical Lead
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RE: Blue prism PDF Toolkit VBO - Need information

Tejaskumar_Darji — Fri, 17 Jun 2022 09:23:00 GMT

Hi Geoff,

Thank you for your response.

Yes, I'm using the latest version of the asset (To be sure I tested after re-importing the new bprelease as well).

And the latest stable version of AdobePDFServicesSDK is 2.2.1 which I am trying to use

And I can see a similar global code.

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If I was of assistance, please vote for it to be the "Best Answer".

Thanks & Regards,
Tejaskumar Darji
Sr. Consultant-Technical Lead
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RE: Blue prism PDF Toolkit VBO - Need information

GeoffHirst — Fri, 17 Jun 2022 14:37:00 GMT

Tejas,

Sorry for the delay in responding. I now have it all working on 6.10.4. It took me some time because the machine I have this version of BP running on, is my own laptop. Now, I have System.Buffers version 4.0.3.0. The Adobe PDF Services dll expects version 4.0.2.0 hence we have the redirect in code. Can you check the initialisation page, I am sure it is there but there should be code like this in the code stage.

Version version = new Version(4,0,3,0);
string publicKeyToken = "cc7b13ffcd2ddd51";
RedirectAssembly("System.Buffers", version, publicKeyToken);

This is the code that calls the routine I mentioned earlier. Now, in your Blue Prism Automate folder, can you check the version of System.Buffers? I am guessing you are on Windows 11 as that now seems to show only the file version and not the actual assembly version. You may need to acquire a tool to check the actual assembly version and for this I use a tool called .NET Dependency Walker by WorkShell. It is a paid product, but there is a trial period.

I am hoping that with this information, you will be able to resolve your issues, please come back to me if you need further assistance.

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Geoff Hirst
Senior DX Engineer - Digital Exchange - EMEA
SS&C Blue Prism
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RE: Blue prism PDF Toolkit VBO - Need information

Tejaskumar_Darji — Fri, 17 Jun 2022 17:18:00 GMT

Hello @Geoff Hirst & @devneetmohanty07

IT IS WORKING NOW!

Actually, we were running it from the action/sub-page itself for the sake of testing purposes.

And when you mentioned in your final comment that there is code at the Initialise stage to manage the DLL version discrepancy, it sparked a thought because we were running directly from Action, therefore this code was never executed.

As a result, when we ran from the process layer, it began to work for us.

I'm using WIN10 and System.Buffer supplied by default from Blue Prism is V4.6.28619.1 and that is what I kept and it worked!

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If I was of assistance, please vote for it to be the "Best Answer".

Thanks & Regards,
Tejaskumar Darji
Sr. Consultant-Technical Lead
------------------------------

RE: Blue prism PDF Toolkit VBO - Need information

GopinathVenkat1 — Thu, 25 Aug 2022 02:58:00 GMT

@Tejaskumar_Darji or @GeoffHirst or @devneetmohanty07 ,Hi All,

After doing all those steps mentioned in the above threat I am facing the below error and unable to use the PDF Toolkit, I actually dont know what i am missing. details are below please help me to resolve the issue. Do we need a licensed adobe acrobat reader version installed in the workstation to utilize this vbo?

Error Message:
Exception encountered while executing operation: Adobe.PDFServicesSDK.exception.SDKException: Error while reading the config file C:\PDF\\pdftools-api-credentials.json ---> System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\PDF\pdftools-api-credentials.json'.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.StreamReader..ctor(String path, Encoding encoding, Boolean detectEncodingFromByteOrderMarks, Int32 bufferSize, Boolean checkHost)
at System.IO.File.InternalReadAllText(String path, Encoding encoding, Boolean checkHost)
at System.IO.File.ReadAllText(String path)
at Adobe.PDFServicesSDK.core.util.JsonUtil.GetTokenFromFile(String configFilePath)
--- End of inner exception stack trace ---
at Adobe.PDFServicesSDK.core.util.JsonUtil.GetTokenFromFile(String configFilePath)
at Adobe.PDFServicesSDK.auth.ServiceAccountCredentials.Builder.FromFile(String credentialsFilePath)
at Blue_Prism___PDF_Toolkit.CombinePDF(String CredentialsFilePath, String Filepath1, String Filepath2, String OutputFilepath, String& ErrorMessage)

Global Code:

private static PageRanges CreateSinglePageRange(int pageNumber)
{
// Specify pages for deletion.
PageRanges pageRange = new PageRanges();
// Add page 1.
pageRange.AddSinglePage(pageNumber);

return pageRange;
}

private static PageRanges CreatePageRange(int fromPage, int toPage)
{
// Specify pages for deletion.
PageRanges pageRange = new PageRanges();
// Add pages from and to.
pageRange.AddRange(fromPage, toPage);

return pageRange;
}

public static void RedirectAssembly(string shortName, Version targetVersion, string publicKeyToken) {
ResolveEventHandler handler = null;

handler = (sender, args) => {
// Use latest strong name & version when trying to load SDK assemblies
var requestedAssembly = new AssemblyName(args.Name);
if (requestedAssembly.Name != shortName)
return null;

requestedAssembly.Version = targetVersion;
requestedAssembly.SetPublicKeyToken(new AssemblyName("x, PublicKeyToken=" + publicKeyToken).GetPublicKeyToken());
requestedAssembly.CultureInfo = CultureInfo.InvariantCulture;

AppDomain.CurrentDomain.AssemblyResolve -= handler;

return Assembly.Load(requestedAssembly);
};
AppDomain.CurrentDomain.AssemblyResolve += handler;
}

Initialize page code:

Version version = new Version(4,0,3,0);
string publicKeyToken = "cc7b13ffcd2ddd51";
RedirectAssembly("System.Buffers", version, publicKeyToken);

Blue Prism Version: 7.1.0.62280

Tried all the ways as much as I can do but getting the same error and in my workstation visual studio 2017 is installed .
Is there anything needs to be installed or managed in settings to make this run on PDF combine please let me know.

Note: recently we upgraded the BP version to new one till that SabanciDx - Daily PDF Actions but after upgrade its not working so we planning to move on to this standard pdf handler from Blue prism hope i will get a permanent solution.

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Gopinath Venkatesan
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RE: Blue prism PDF Toolkit VBO - Need information

GeoffHirst — Thu, 25 Aug 2022 05:58:00 GMT

HI Gopinath,

Thank you for being a SSC Blue Prism Customer and for your interest in the PDF Toolkit VBO.

If you look at the first line of your error, the toolkit is unable to locate the pdftool-api-credentials.json file. You can generate this file from the Adobe Developer website. It is currently looking for it in a folder called "C:\PDF".

I think if you can resolve this issue, you will be able to progress.

Please come back to me if you have further issues.

Thank you for using Blue Prism.

regards

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Geoff Hirst
Senior DX Engineer - Digital Exchange - EMEA
SS&C Blue Prism
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RE: Blue prism PDF Toolkit VBO - Need information

GopinathVenkat1 — Thu, 25 Aug 2022 07:51:00 GMT

Hi @GeoffHirst ,

I signed up in Adobe developers portal and trying to find the dll or package related to C:PDF but i couldn't find anything there.

could you please share me a link if you have i can directly access to download the needed components? if i dont have access and keep searching wont help i think so that requesting your support on link.

Thanks in Advance.
Regards,
Gopinath.V

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Gopinath Venkatesan
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RE: Blue prism PDF Toolkit VBO - Need information

GeoffHirst — Thu, 25 Aug 2022 07:58:00 GMT

Hi Goprinath,

The link you need is https://developer.adobe.com/console/home now I suggest you follow the API documentation as it explains what you need to do to build your own unique set of api credentials. This page should help you on your way. https://developer.adobe.com/document-services/apis/pdf-services/

regards

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Geoff Hirst
Senior DX Engineer - Digital Exchange - EMEA
SS&C Blue Prism
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