[andyasp]

• I added CHANGELOG entry for this change.
• Change is not relevant to the end user.

Changes

In the configuration for S3 using AWS SigV2 can be specified:

type: S3
config:
  ...
  signature_version2: true

The reason for this change is that even when signature_version2 is true, SigV4 is used.

overrideSignerType tried to hook into the credential chain in order apply the SigV2 configuration, but only implemented Retrieve(), which is no longer called by minio-go and marked as deprecated (code reference). If you step through the request initiation RetrieveWithCredContext is now called, so this change implements that method for overrideSignerType for the hook to work again.

Verification

Unit test that fails without the change and passes with it.