region set in profile in $HOME/.aws/config is ignored

[olfek]

Describe the bug

region set in profile in $HOME/.aws/config IS NOT loaded in.

Expected Behavior

region set in profile in $HOME/.aws/config IS loaded in.

Current Behavior

region set in profile, in $HOME/.aws/config
loaded into Amazon.Runtime.CredentialManagement.CredentialProfile.Region
IS NOT CONSIDERED in Amazon.Runtime.ClientConfig.get_RegionEndpoint.

Reproduction Steps

N/A

Possible Solution

region set in profile, in $HOME/.aws/config
loaded into Amazon.Runtime.CredentialManagement.CredentialProfile.Region
SHOULD BE CONSIDERED in Amazon.Runtime.ClientConfig.get_RegionEndpoint.

Just like how:

endpoint_url set in profile, in $HOME/.aws/config
loaded into Amazon.Runtime.CredentialManagement.CredentialProfile.EndpointUrl
IS CONSIDERED in Amazon.Runtime.ClientConfig.get_ServiceURL.

Additional Information/Context

N/A

AWS .NET SDK and/or Package version used

3.7.30X.XX

Targeted .NET Platform

.NET 7

Operating System and version

Windows 11

[olfek]

https://github.com/aws/aws-sdk-net/blob/7302897f02be1298041a882321179624bf56191d/sdk/src/Core/Amazon.Runtime/CredentialManagement/CredentialProfile.cs

https://github.com/aws/aws-sdk-net/blob/cd07e59f0a3317f7fad9f14f4eefc0aff8596aaa/sdk/src/Core/Amazon.Runtime/ClientConfig.cs

[bhoradc]

Hi @olfek,

Thank you for submitting the issue. Using latest .NET SDK and Package version, I unable to reproduce the scenario you mentioned.

Can you please review below steps and let me know if I am missing anything? Or kindly assist in providing steps to reproduce the issue.

• ~/.aws/config file has test profile

[test]
region=us-west-2

• Executed below program

using Amazon.Runtime.CredentialManagement;
using Amazon.S3;

            var credentialsFile = new SharedCredentialsFile(@"C:\Users\**\.aws\config");

            CredentialProfile profile;

            if (credentialsFile.TryGetProfile("test", out profile))
            {
                Console.WriteLine("Profile Region: " + profile.Region.SystemName);
                var s3Client = new AmazonS3Client(profile.Region);
                Console.WriteLine("Region Endpoint: " + s3Client.Config.RegionEndpoint);
            }

• Execution result

Profile Region: us-west-2
Region Endpoint: US West (Oregon) (us-west-2)

Regards,
Chaitanya

[olfek]

@bhoradc ...

I believe your understanding is different to what this issue is about.

1. You explicitly read the config file.
   I am expecting the config file to be read implicitly by the ClientConfig code like this - https://github.com/aws/aws-sdk-net/blob/cd07e59f0a3317f7fad9f14f4eefc0aff8596aaa/sdk/src/Core/Amazon.Runtime/ClientConfig.cs#L310C1-L317C26
2. You explicitly pass the region to the client constructor.
   I am expecting the region to be set implicitly using the implicitly read config file, like this -

   aws-sdk-net/sdk/src/Core/Amazon.Runtime/ClientConfig.cs

   Line 334 in cd07e59

   this.ServiceURL = profile.EndpointUrl;

Keep in mind using the RegionEndpoint or ServiceURL setters will nullify each other. In the case of profiles in the external config file, I think the SDK code should trust it to be valid and load it in as is without any additional validation/cleanup logic. So perhaps this line (

aws-sdk-net/sdk/src/Core/Amazon.Runtime/ClientConfig.cs

Line 334 in cd07e59

this.ServiceURL = profile.EndpointUrl;

) should be this.(s)erviceURL = profile.EndpointUrl and similarly this.(r)egionEndpoint = profile.Region.

[normj]

@olfek How are you configuring the SDK to use a specific profile? There a few cases with the .NET SDK doesn't know what profile is being used because it is working with the low level primitives like credentials. In those cases it falls back to looking for configuration with the default profile or the profile the AWS_PROFILE environment variable is set to.

[olfek]

@normj --- I've set the AWS_PROFILE environment variable, this is my $HOME/.aws/config file:

[profile localstack]
region = eu-west-2
endpoint_url = http://localhost:4566

endpoint_url is loaded in, but region is not.

I'm using https://github.com/localstack/localstack by the way.

[normj]

@olfek The SDK either has the region or the endpoint_url set with the last one set overruling the previous. In this case the endpoint_url from config is being set on the client config last causing the region to be cleared out. What are you expecting with having both the region and endpoint_url set?

[olfek]

@normj ---

What are you expecting with having both the region and endpoint_url set?

I'm expecting the ability to use a specific region with LocalStack, configured outside of code, to facilitate multi-region services.