How to get azure Eventgrid custom event data using Go language ?

Question

How to get azure Eventgrid custom event data using Go language ?

Koushik Purva Mahendra 50

I want a Go language code that can print the custom event data coming from the azure eventgrid, which is I am using as trigger to hit my azure function apps function.

We have the reference for all other languages but not for go language.

I want a solution kind of this "https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-event-grid-trigger?pivots=programming-language-python&tabs=csharp-script%2Cextensionv3" but in Go language.

MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator

2023-05-12T13:53:50.5633333+00:00

Koushik Purva Mahendra Just a follow up on the answer below and see if you still need assistance.
Koushik Purva Mahendra 50 Reputation points

2023-05-15T19:30:30.9133333+00:00

Hello @MuthuKumaranMurugaachari-MSFT , actually now I just wanted to how azure event grid works underlying, does it trigger azure function by sending events to the endpoint of azure function ?
MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator

2023-05-15T20:10:46.08+00:00

Koushik Purva Mahendra yes, Azure Function endpoint is triggered based on the events generated by Event Grid Source through event subscription which has endpoint type, URL, schema etc. (event subscription must be created) and detailed in docs: https://learn.microsoft.com/en-us/azure/azure-functions/event-grid-how-tos?tabs=v2%2Cportal as well as https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-event-grid-trigger?pivots=programming-language-python&tabs=in-process%2Cextensionv3.

For Custom handlers, once Functions Host receives the event it handles request/response payload to WebServer like shown here.

Let me know if you have any other questions.
Koushik Purva Mahendra 50 Reputation points

2023-05-16T05:37:31.7433333+00:00

@MuthuKumaranMurugaachari-MSFT thanks for your detailed explanation, I got it now and one more thing can I make custom events in azure Event Grid to trigger my azure function in coming future, for example can I make a Event in Azure event grid to get trigger my azure function tomorrow or day after tomorrow or after 10 days, is it possible that I have to trigger my azure function for next 60 days daily at a specific time so I can make straight 60 Custom events in custom topic under subscription in event grid for a specific time and now that each event will trigger my azure function at specific date and time I given to the event for next coming days.
MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator

2023-05-16T13:10:20.4966667+00:00

Koushik Purva Mahendra I see that you have posted this question in other thread and Mayank has answered the question. Feel free to add a comment in that thread to continue the discussion. We would be happy to help!
Koushik Purva Mahendra 50 Reputation points

2023-05-17T08:46:32.8533333+00:00

@MuthuKumaranMurugaachari-MSFT Thanks for letting me know, Thank you for your time.

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MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator

2023-05-12T13:53:50.5633333+00:00

Koushik Purva Mahendra Just a follow up on the answer below and see if you still need assistance.
Koushik Purva Mahendra 50 Reputation points

2023-05-15T19:30:30.9133333+00:00

Hello @MuthuKumaranMurugaachari-MSFT , actually now I just wanted to how azure event grid works underlying, does it trigger azure function by sending events to the endpoint of azure function ?
MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator

2023-05-15T20:10:46.08+00:00

Koushik Purva Mahendra yes, Azure Function endpoint is triggered based on the events generated by Event Grid Source through event subscription which has endpoint type, URL, schema etc. (event subscription must be created) and detailed in docs: https://learn.microsoft.com/en-us/azure/azure-functions/event-grid-how-tos?tabs=v2%2Cportal as well as https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-event-grid-trigger?pivots=programming-language-python&tabs=in-process%2Cextensionv3.

For Custom handlers, once Functions Host receives the event it handles request/response payload to WebServer like shown here.

Let me know if you have any other questions.
Koushik Purva Mahendra 50 Reputation points

2023-05-16T05:37:31.7433333+00:00

@MuthuKumaranMurugaachari-MSFT thanks for your detailed explanation, I got it now and one more thing can I make custom events in azure Event Grid to trigger my azure function in coming future, for example can I make a Event in Azure event grid to get trigger my azure function tomorrow or day after tomorrow or after 10 days, is it possible that I have to trigger my azure function for next 60 days daily at a specific time so I can make straight 60 Custom events in custom topic under subscription in event grid for a specific time and now that each event will trigger my azure function at specific date and time I given to the event for next coming days.
MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator

2023-05-16T13:10:20.4966667+00:00

Koushik Purva Mahendra I see that you have posted this question in other thread and Mayank has answered the question. Feel free to add a comment in that thread to continue the discussion. We would be happy to help!
Koushik Purva Mahendra 50 Reputation points

2023-05-17T08:46:32.8533333+00:00

@MuthuKumaranMurugaachari-MSFT Thanks for letting me know, Thank you for your time.

Answer 1

Koushik Purva Mahendra Thanks for posting your question in Microsoft Q&A. The official supported languages are listed here, and we provide examples in our doc for those languages. The languages that are not officially supported can use custom handlers to implement and we provide some basic examples in the repo: functions-custom-handlers (not specific examples for each service though; will pass feedback to our product team for adding more samples).

You can follow doc Azure Functions custom handlers and configure event grid bindings in function.json similar to other languages, use code snippets in this repo to handle the incoming requests. The flow is when event grid event data is received, Functions host sends an HTTP POST request to the custom handler with the payload in the request body and you can process the data from the body with your business logic.

Here is the sample code snippet:

handler.go

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host.json

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function.json

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I hope this helps and let me know if you have any questions.

If you found the answer to your question helpful, please take a moment to mark it as "Yes" for others to benefit from your experience. Or simply add a comment tagging me and would be happy to answer your questions.

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How to get azure Eventgrid custom event data using Go language ?

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