Azure API Management - variable types are invalid in arrays

Question

Azure API Management - variable types are invalid in arrays

Westermeier, Michael 5

I have configured a GraphQL API on Azure API Management.

I perform a query to that GraphQL API and hand over dataTypes in arrays of string value types:

query GetDevicesData(
	$dataType: [String!]!){deviceData(dataType: $dataType,...)...}

values:

{
  "dataType":[
    "yield_out",
    "yield_in",
    "state"
  ]
}

Now, when I perform the query, I get an error from API Management that the variable is invalid because it cannot convert it to String.:

error:

"message": "Variable '$dataType[0]' is invalid. Unable to convert 'yield_out' to 'String'",
"locations": [
	{
		"line": 3,
        "column": 3
     }
],
"extensions": {
	"code": "INVALID_VALUE",
    "codes": [
    	"INVALID_VALUE",
        "INVALID_OPERATION"
     ],
     "number": "5.8"
}

I have tried a lot to solve the issue, but am completely lost now.

Thanks for your help

Westermeier, Michael 5 Reputation points

2023-05-23T23:21:05.51+00:00

I have just found this related issue here: https://github.com/graphql-dotnet/graphql-dotnet/issues/3155
Is it possible that Azure API Management needs a fix here?
MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator

2023-05-24T20:16:18.8866667+00:00

Westermeier, Michael Thanks for posting your question in Microsoft Q&A. Can you clarify if this was returned by API Management or GraphQL backend API? If you are using azure portal to test API i.e. https://learn.microsoft.com/en-us/azure/api-management/graphql-api?tabs=portal#test-your-graphql-api, please share the full exception, error message, request id from trace.

Also, I would like to check with you if you have tested GraphQL API via other tools such as Postman for the same input.
Ben Gimblett 4,560 Reputation points Microsoft Employee

2023-05-25T13:42:45.44+00:00

Note to my colleague - have been working with customer as they're engaged with our team. I have created a small repro and opened a support request internally. Will post an update here once we understand more.
MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator

2023-05-25T18:56:27.01+00:00

Ben Gimblett thanks

2 answers

Your answer

Westermeier, Michael 5 Reputation points

2023-05-23T23:21:05.51+00:00

I have just found this related issue here: https://github.com/graphql-dotnet/graphql-dotnet/issues/3155
Is it possible that Azure API Management needs a fix here?
MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator

2023-05-24T20:16:18.8866667+00:00

Westermeier, Michael Thanks for posting your question in Microsoft Q&A. Can you clarify if this was returned by API Management or GraphQL backend API? If you are using azure portal to test API i.e. https://learn.microsoft.com/en-us/azure/api-management/graphql-api?tabs=portal#test-your-graphql-api, please share the full exception, error message, request id from trace.

Also, I would like to check with you if you have tested GraphQL API via other tools such as Postman for the same input.
Ben Gimblett 4,560 Reputation points Microsoft Employee

2023-05-25T13:42:45.44+00:00

Note to my colleague - have been working with customer as they're engaged with our team. I have created a small repro and opened a support request internally. Will post an update here once we understand more.
MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator

2023-05-25T18:56:27.01+00:00

Ben Gimblett thanks

Answer 1

Westermeier, Michael 5

Hi @MuthuKumaranMurugaachari, thanks for your reply.

Yes, the error is origination from the Azure API Management itself. The Request does not even reach our GraphQL Backend through the APIM serializer.

We can reproduce with different clients and test-clients like Postman.

Actually, we are already in direct, personal contact with one of your MS colleagues. He'll take care of the issue and post a final solution here at the end of investigation.

BR, Michael

MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator

2023-05-25T10:35:30.8466667+00:00

Westermeier, Michael sounds good.

Answer 2

Ben Gimblett 4,560 Microsoft Employee

Thankyou Michael . APIM Service team have accepted the issue raised - they will look at a fix asap.

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Azure API Management - variable types are invalid in arrays

2 answers

Your answer