envoyproxy/envoy

error message: "multiple filter chains with the same matching rules are defined" is hard to debug in large filters without context

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#11,753 opened on Jun 25, 2020

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area/configurationhelp wanted

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Description

Its (unfortunately) not uncommon for us to run across bugs resulting in "multiple filter chains with the same matching rules are defined". These are pretty hard to debug when we have 100s of filter chains. It would be useful to get some sort of indication about which filter chain is duplicated, whether its the index of the filter chain or some other identifier.

Contributor guide

Research direction
Trace the error message 'multiple filter chains with the same matching rules are defined' in the codebase. Identify where the duplicate detection occurs and add context such as filter chain index or name to the error message. Look in the configuration validation or filter chain management code.
Tech stack
ccpp
Domain
backendinfrastructure
Issue type
Bug
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.
1-3 hours
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++Envoy
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50