How to enable path style for s3 services?

[Xuanwo]

Update! aws-sdk-s3 >0.52

The AWS SDK for S3 now supports both virtual addressing and path style. By default, virtual addressing will be used if the bucket is DNS compatible. If you do now want to use virtual adressing, use force_path_style(true) when constructing the S3 client.

Note: Loading s3 configuration from the ~/.aws/config is not currently supported.

Prerequisites

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Question Description

How to enable path style for s3 compatible service?

For example, to use minio, we need to enable path style so that we can send request to 127.0.0.1:3000/bucket.

Platform/OS/Device

All

Language Version

Rust 1.17.0

[rcoh]

currently the SDK will only use path style, I believe. Let me know if you see different behavior.

[Xuanwo]

Oh, because the deprecation plan of path style, I thought the new sdk will use virtual host api style by default.

Please allow me to correct my question: How to control the api style between virtual host style and path style?

Thanks!

[rcoh]

currently, the SDK only supports path style. When it is eventually released, it will probably be exposed as a configuration option on the S3 config.

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[rossng]

I just bumped into this issue because the SDK was generating virtual-host style URLs that didn't work with my Minio server. I'm guess that it might be due to this call, which appears to hardcode construction of a virtual-host style URL in some cases. (My server has a hostname like my-machine.local, which triggers whatever logic is deciding here).

[rcoh]

see this section of the changelog:

Before, all requests hit the path-style endpoint. Going forward, all requests that can be routed to the virtually hosted bucket will be routed there automatically.

force_path_style: Requests will now default to the virtually-hosted endpoint <bucketname>.s3.<region>.amazonaws.com

You want to set force_path_style(true) on aws_sdk_s3::Config during client construction. Here's an example from the S3 tests: https://github.com/awslabs/aws-sdk-rust/blob/main/sdk/s3/tests/endpoints.rs#L36-L43

[rossng]

Excellent - somehow I missed that on the config object. Thanks!