envoyproxy/envoy

Support role chaining in AWS signing filter

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#38,455 opened on Feb 14, 2025

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area/awshelp wanted

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Description

Title: Support role chaining in AWS signing filter

Description: Currently the AWS signing filter supports a few different ways of getting credentials to use for signing requests. However, as far as I can tell, it does not support role chaining where one set of credentials is used in order to assume another role with which to sign the requests.

In my particular case, I need to configure Envoy as a signing proxy deployed as part of an ECS task, where the identity used to sign requests is not the ECS task role, but another role that the ECS task is able to assume. I would imagine that this would be a new credential provider like AssumeRoleProvider that would in turn receive a credential provider chain from which to get the credentials needed to assume the role as needed.

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Contributor guide

Research direction
Investigate the existing credential provider chain in the AWS request signing filter. Add a new AssumeRoleProvider that takes a base credential provider and a role ARN, and uses the base credentials to assume the role. Follow the pattern of existing providers like CredentialsProviderChain or DefaultCredentialsProviderChain. Ensure the new provider refreshes credentials as needed.
Tech stack
cpp
Domain
apibackend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C++AWS SDKEnvoy filter architecture
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40