james-iceb opened a new issue, #538:
URL: https://github.com/apache/arrow-rs-object-store/issues/538
**Describe the bug**
AmazonS3ConfigKey::WebIdentityTokenFile and AmazonS3ConfigKey::RoleArn
config is ignored when using AWS WebIdentity credential provider. It only works
if you set the AWS_WEB_IDENTITY_TOKEN_FILE and AWS_ROLE_ARN environment
variables.
In src/aws/builder.rs it only checks the environment variables, not the
config:
```
} else if let (Ok(token_path), Ok(role_arn)) = (
std::env::var("AWS_WEB_IDENTITY_TOKEN_FILE"),
std::env::var("AWS_ROLE_ARN"),
) {
debug!("Using WebIdentity credential provider");
```
**To Reproduce**
Do not set the environment variables and use a builder like the following:
```
let builder = AmazonS3Builder::new()
.with_bucket_name("some-bucket")
.with_config(
AmazonS3ConfigKey::WebIdentityTokenFile,
"/tmp/fake-token-file",
)
.with_config(
AmazonS3ConfigKey::RoleArn,
"arn:aws:iam::123456789012:role/test-role",
)
.with_config(AmazonS3ConfigKey::RoleSessionName, "TestSession")
.with_config(
AmazonS3ConfigKey::StsEndpoint,
"https://sts.us-west-2.amazonaws.com";,
);
```
**Expected behavior**
It should try and get a key from the STS endpoint (but doesn't)
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