cloud: support chaining of assumed roles #83712
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Previously, a user could only assume a role in AWS or GCP directly, via the identity specified by implicit or specified auth. This was inadequate because there is a need to support role assumption through a chain of intermediate delegate roles. To address this, this patch allows the ASSUME_ROLE parameter in AWS and GCP storage and KMS URIs to specify a list of roles with a comma-separated string. The roles in the list can then be chain assumed in order to access the resource specified by the URI. With this patch, if a destination in S3 can only be accessed by RoleB, and the identity corresponding to implicit auth can only assume RoleB through an intermediate role RoleA, then this chain assumption can be specified in the S3 URI: s3://bucket/key?AUTH=implicit&ASSUME_ROLE=RoleA,RoleB In addition, the parameters for auth in AWS URIs via assume role have been changed so that the "assume" auth mode no longer exists, and the ASSUME_ROLE param can be specified for both "specified" and "implicit" auth. Finally, some AWS cloud unit tests, including the assume role tests, have been added to the unit test nightly. Release note (enterprise change): Allow the ASSUME_ROLE parameter in AWS and GCP storage and KMS URIs to specify a list of roles with a comma-separated string. The roles in the list can then be chain assumed in order to access the resource specified by the URI. For example, if a destination in S3 can only be accessed by RoleB, and the identity corresponding to implicit auth can only assume RoleB through an intermediate role RoleA, then this chain assumption can be specified in the S3 URI: s3://bucket/key?AUTH=implicit&ASSUME_ROLE=RoleA,RoleB In addition, remove the "assume" auth mode from AWS URIs, and instead use the ASSUME_ROLE parameter to indicate that a role should be assumed for authentication. Below are some examples: S3: s3://<bucket>/<key>?AUTH=specified&ASSUME_ROLE=<role_arn>&AWS_ACCESS_KEY_ID=<access_key>&AWS_SECRET_ACCESS_KEY=<secret_key> AWS KMS: aws:///<key_arn>?AUTH=implicit®ION=<region>&ASSUME_ROLE=<role_arn>
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Previously, a user could only assume a role in AWS or GCP directly, via the
identity specified by implicit or specified auth. This was inadequate because
there is a need to support role assumption through a chain of intermediate
delegate roles. To address this, this patch allows the ASSUME_ROLE parameter
in AWS and GCP storage and KMS URIs to specify a list of roles with a
comma-separated string. The roles in the list can then be chain assumed in
order to access the resource specified by the URI.
With this patch, if a destination in S3 can only be accessed by RoleB, and the
identity corresponding to implicit auth can only assume RoleB through an
intermediate role RoleA, then this chain assumption can be specified in the S3
URI:
s3://bucket/key?AUTH=implicit&ASSUME_ROLE=RoleA,RoleB
In addition, the parameters for auth in AWS URIs via assume role have been
changed so that the "assume" auth mode no longer exists, and the ASSUME_ROLE
param can be specified for both "specified" and "implicit" auth.
Finally, some AWS cloud unit tests, including the assume role tests, have been
added to the unit test nightly.
Release note (enterprise change): Allow the ASSUME_ROLE parameter in AWS and
GCP storage and KMS URIs to specify a list of roles with a comma-separated
string. The roles in the list can then be chain assumed in order to access the
resource specified by the URI.
For example, if a destination in S3 can only be accessed by RoleB, and the
identity corresponding to implicit auth can only assume RoleB through an
intermediate role RoleA, then this chain assumption can be specified in the S3
URI:
s3://bucket/key?AUTH=implicit&ASSUME_ROLE=RoleA,RoleB
In addition, remove the "assume" auth mode from AWS URIs, and instead use the
ASSUME_ROLE parameter to indicate that a role should be assumed for
authentication. Below are some examples:
S3: s3:///?AUTH=specified&ASSUME_ROLE=<role_arn>&AWS_ACCESS_KEY_ID=<access_key>&AWS_SECRET_ACCESS_KEY=<secret_key>
AWS KMS: aws:///<key_arn>?AUTH=implicit®ION=&ASSUME_ROLE=<role_arn>
Addresses #81453