How can i collect the combined outputs from a for-each loop in Azure Logic Apps

Herries, Roddy 0

Hi,

I am trying to collect the outputs of a for-each action in my azure logic app. The logic is this:

Send and approval request to each approver (email), then subscribe on a webhook for the approval responses (I do this with a correlation ID outside of the process). Collect the result of all the callbacks (approve or reject). If anyone rejected then the overall decision is reject, otherwise it is approve.

From my reading and experimentation it seems difficult to collect the results in a for-each like this, especially if the for-each runs concurrently due to the lack of any way to safely update shared state between the concurrent activities.

I wondered if there are any solutions/workarounds to this?

Screenshot 2024-05-20 at 15.47.51

LeelaRajeshSayana-MSFT 13,871 Reputation points

2024-05-21T22:23:47.78+00:00

Hi @Herries, Roddy Greetings! Welcome to Microsoft Q&A forum. Thank you for posting this question here.

Have you looked into the action Send Approval Email which provides an option to track the responses for each email sent? The action returns an ApprovalEmailResponse for each email sent which can be tracked easily using the Selected Option action from the approver. Please refer to the Create approval-based workflows article for more details on this.

Another alternative approach could be to store the data of Approver emails by setting the default responses to No and save it in a location such as a SharePoint or any endpoint of your choice. Once you get a response, you can capture the response time from the approver email and update the record status to Yes or No Using this approach you may track once all the approvers have responded back. A Power Automate approach on a similar request has been answered in the past in this thread

Hope this helps!
Herries, Roddy 0 Reputation points

2024-05-22T08:48:18.1366667+00:00
Thanks for coming back to me and for your suggestions, I will have a look at these. I have looked at send approval email but I was exploring the feasibility of a non-outlook based approval flow e.g.

Send email with deep link into my app (with some unique code/correlationId)

Subscribe to web hook in my app using code/correlationId, wait

User follows deep link into my app approval screen and provides decision

In my app, the callback mapped to the code/correlationId is triggered with payload of the decision

I want to perform 1-4 in a for-each for each approver (array of email addresses) and I want to collect the decisions in step 4. I was able to achieve this by defining an array variable before the for-each and then using "append to array" after the http-webhook action completes. Then, after the for-each I have a condition which inspect the results array and derives the overall approval decision. It seems to work ok, but would value any thoughts you may have about the safety of the append operation inside the for-each loop.

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How can i collect the combined outputs from a for-each loop in Azure Logic Apps