AWS Rekognition not working as per the docs

[collegeimprovements]

Hi Team,
I was trying to follow the generated docs for Rekognition service.
But I keep getting this error.

AWS.Rekognition.detect_text(client, "s3://s3_bucket/public/cococola/c_1001.jpg")
** (FunctionClauseError) no function clause matching in AWS.Request.encode!/3    
    
    The following arguments were given to AWS.Request.encode!/3:
    
        # 1
        #AWS.Client<
          endpoint: nil,
          http_client: {AWS.HTTPClient, []},
          json_module: {AWS.JSON, []},
          port: 443,
          proto: "https",
          region: "us-east-2",
          service: "rekognition",
          session_token: nil,
          xml_module: {AWS.XML, []},
          ...
        >
    
        # 2
        "json"
    
        # 3
        "s3://cookstro/public/cococola/c_1001.jpg"
    
    Attempted function clauses (showing 1 out of 1):
    
        defp encode!(%AWS.Client{} = client, protocol, payload) when protocol === "query" or protocol === "json" or protocol === "rest-json" or protocol === "rest-xml" and is_map(payload)
    
    (aws 0.10.0) lib/aws/request.ex:233: AWS.Request.encode!/3
    (aws 0.10.0) lib/aws/request.ex:42: AWS.Request.request_post/5
    ```
    
    We tried with `File.read!()` as well with no success.

[philss]

Hi @collegeimprovements 👋

I think the problem is that you are passing the input in a wrong format.

Please take a look: https://docs.aws.amazon.com/rekognition/latest/dg/API_DetectText.html
and https://docs.aws.amazon.com/rekognition/latest/dg/API_S3Object.html

For the docs, your request would look like this:

AWS.Rekognition.detect_text(
  client,
   %{ "Image" => %{ 
      "S3Object" => { 
         "Bucket" => "s3_bucket",
         "Name" =>  "public/cococola/c_1001.jpg"
      }
   }
)

[collegeimprovements]

Ah, Thanks a lot @philss. I was passing string instead of object as you suggested. It works now. Thanks a lot ☺️