Azure Functions - Golang App setting with array value

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Azure Functions - Golang App setting with array value

Guy Dillen 116

Hi,

I need an array value as an app setting in my Golang/ Custom Handler function.

I could define an environment variable and add a comma separated string with the values.

Are there eventually other options for custom handlers (Golang)?

Thanks.

Guy

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MuthuKumaranMurugaachari-MSFT 22,446 Moderator

Guy Dillen Thank you for posting your question in Microsoft Q&A. For representing an array in app setting, you can use 0 based configuration with set of elements like described here. I found a similar discussion in SO thread which would help in your scenario.

If you face any issues, share the code snippet and .json values or app setting values that will help in understanding it better.

Guy Dillen 116 Reputation points

2023-06-28T07:40:24.2333333+00:00

Thanks for your answer.
However, does this also work with Go custom handlers?
MuthuKumaranMurugaachari-MSFT 22,446 Reputation points Moderator

2023-06-28T15:09:44.15+00:00

Guy Dillen You can define the value like below in local.settings.json (or app settings when deployed in azure) and read environment variables in your code. (Note: colon is not supported as variable name in linux/max os so you can use double underscore)

JSON:

Output:

Are you looking to bind these values as array in your code? Can you share the sample array values defined?
Guy Dillen 116 Reputation points

2023-06-28T15:29:47.96+00:00

Ok I understand: for every entry in local.settings.json a separate os.GetEnv ...

What I'm looking for is reading them in, in 1 time (something similar as in C# configuration.GetSection...).

I suppose I have to bind the values as an array, after reading them 1 by 1 (os.GetEnv), myself in my Go code?
MuthuKumaranMurugaachari-MSFT 22,446 Reputation points Moderator

2023-06-28T15:46:29.7366667+00:00

Guy Dillen That's correct. I don't think there is a way to configure it like in C#. I will pass them the suggestion to our product team internally.

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Azure Functions - Golang App setting with array value

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