19234: s3v2 + non-aws: default to us-east-1 signing settings.

[arvados.git] / services / keepstore / s3aws_volume.go

diff --git a/services/keepstore/s3aws_volume.go b/services/keepstore/s3aws_volume.go
index f7cff6d33ea4d7c764ba74f06e49c8815f021fa9..d068dde074ea254ef814aea38eefa6f63102d7e3 100644 (file)
--- a/services/keepstore/s3aws_volume.go
+++ b/services/keepstore/s3aws_volume.go
@@ -184,19 +184,25 @@ func (v *S3AWSVolume) check(ec2metadataHostname string) error {
                        if v.Endpoint != "" && service == "s3" {
                                return aws.Endpoint{
                                        URL:           v.Endpoint,
-                                       SigningRegion: v.Region,
+                                       SigningRegion: region,
                                }, nil
                        } else if service == "ec2metadata" && ec2metadataHostname != "" {
                                return aws.Endpoint{
                                        URL: ec2metadataHostname,
                                }, nil
+                       } else {
+                               return defaultResolver.ResolveEndpoint(service, region)
                        }
-
-                       return defaultResolver.ResolveEndpoint(service, region)
                }
                cfg.EndpointResolver = aws.EndpointResolverFunc(myCustomResolver)
        }
-
+       if v.Region == "" {
+               // Endpoint is already specified (otherwise we would
+               // have errored out above), but Region is also
+               // required by the aws sdk, in order to determine
+               // SignatureVersions.
+               v.Region = "us-east-1"
+       }
        cfg.Region = v.Region
 
        // Zero timeouts mean "wait forever", which is a bad