envoyproxy/gateway

Support Metadata for Weighted Clusters

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#6,144 opened on May 21, 2025

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help wanted

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Description

Description: @arkodg writes in #5875

there's one edge case that needs to be solved ... For some cases, specifically when a Backend Filter exists, we create a

  • Weighted xDS cluster for every route rule
  • xDS cluster for every backendRef

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Contributor guide

Research direction
Examine how weighted xDS clusters are generated, especially when BackendFilter is present. Look at the code that handles route rules and backendRefs to understand the missing metadata support.
Tech stack
go
Domain
backend
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.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
GoKubernetesEnvoy
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40