Not able to get "status" : "200 OK" for Bulk Load API Call using aws neptune

Question

I am not able to do Neptune bulk load from AWS S3 using curl command Bulk Load API Call ?
Command:
curl -X POST
-H 'Content-Type: application/json'
https://******.cluster-c4brigvg3m9m.us-east-2.neptune.amazonaws.com:8182/loader -d'
{
"source" : "s3://*****/Unsaved/2022/12/13/4a873928-9910-47b0-85ca-de593ace4f4a.csv",
"format" : "csv",
"iamRoleArn" : "arn:aws:iam::959061167427:role/NeptuneLoadFroms3",
"region" : "us-east-2",
"failOnError" : "FALSE",
}'

This is the error I am getting:
{"code":"AccessDeniedException","requestId":"f6243cd3-2a4f-48a2-9d91-13803c199ef1","detailedMessage":"Missing Authentication Token"}

Can annyone please help me why I am getting this error and How can I resolve it ?

Answer

The curl utility does not have a means to pass IAM credentials.  The error message you are getting is because you're using a Neptune cluster with IAM Authentication enabled.  To resolve this issue, you can use awscurl [1], a utility that will sign the request with IAM credentials that you pass either directly as parameters, credentials that you have stored as environment variables, or credentials that you have stored as a profile in the AWS CLI.

```
awscurl -X POST --service neptune-db -H 'Content-Type: application/json' --region us-east-2 \
https://**.cluster-c4brigvg3m9m.us-east-2.neptune.amazonaws.com:8182/loader -d' 
    {
        "source" : "s3://*/Unsaved/2022/12/13/4a873928-9910-47b0-85ca-de593ace4f4a.csv", 
        "format" : "csv", 
        "iamRoleArn" : "arn:aws:iam::959061167427:role/NeptuneLoadFroms3", 
        "region" : "us-east-2", 
        "failOnError" : "FALSE"
}'
```

[1] https://github.com/okigan/awscurl

Not able to get "status" : "200 OK" for Bulk Load API Call using aws neptune

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