make a REST call to external service from Collibra DIC

Question

Hi,

I tried to invoke an external REST service end point from within a workflow in Collibra DIC, its giving a connection timeout error. Same happens when I try to import metadata from an external MySQL database. I presume outgoing internet connections might have been disabled. I was told to look at documentation but that didnt help, some are suggesting to use a gateway, but I dont know how to do it.
Raised support ticket but no response yet. Can someone please suggest how do I connect to external service/resource?

Thanks,
Sudhakar

Former User · Answer

Is there any roadmap for making calls to external services available by default in Collibra? Something like a webhook or other publish service which can alert on changes or outcomes. Without this, as the previous commenter said, it becomes very crude and cumbersome (and inefficient) to continually poll Collibra for changes.

Given that Mulesoft would have been the original platform to perform this, should there not be a replacement added into the software at some point?

Former User · Answer

shiroshana.tissera:

Hi.
It is not recommended to make external calls from workflows. The recommended way is to make REST calls (GET) from outside DGC to interact with the objects you need. You can do via APIs like AssetApi or AttributeApis with multiple calls or you can use the OutputModule.

Furthermore, going the other way (POST), you can even invoke workflows from outside via RESTApi utilising WorkflowInstanceApi.

Hope this is helpful.

Thank you
Shirosh

What’s the reason for it not being recommended? Pull method from the other system seems like a far more crude approach. To elaborate, our use case is that whenever a change is made to a certain asset we have a workflow which propagates those changes to subscribing systems via an event hub.

I also had a follow-on to the question above, I was able to invoke my external API but was wondering as to what security methods are supported from within a workflow. I.e. can we make calls to external APIs that require OAuth?

Shirosh Tissera · Answer

sudhakar.lorangtechnologies.com:

ame happens when I try to import metadata from an external MySQL database. I presume outgoing internet connections might have been disabled. I was told to look at documentation but that didnt help, some are suggesting to use a gateway, but I dont know how to do it.
Raised support ticket but no response yet. Can someone please suggest how do I connect to external service/resource?

Hi.
It is not recommended to make external calls from workflows. The recommended way is to make REST calls (GET) from outside DGC to interact with the objects you need. You can do via APIs like AssetApi or AttributeApis with multiple calls or you can use the OutputModule.

Furthermore, going the other way (POST), you can even invoke workflows from outside via RESTApi utilising WorkflowInstanceApi.

Hope this is helpful.

Thank you
Shirosh

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