apache/dubbo

How to route based on metadata by use spring cloud and nacos

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#8,284 opened on Jul 13, 2021

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help wanted

Description

If I want route by nacos metadata。In AbstractLoadBalance and AbstractRouter ，I can not get metadata from （List<Invoker> invokers, URL url, Invocation invocation） what should I do？

Contributor guide

Tech stack
javaspring
Domain
backendapi
Issue type
documentation
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.
needs maintainer response
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
JavaSpring CloudDubbo basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Check the Dubbo documentation and source code for AbstractLoadBalance and AbstractRouter (dubbo cluster module). Look for how to access metadata from Invocation or URL. The user asks how to get metadata from the invokers list. Review the RoutingRule and RouterFactory interfaces. Consider asking on the Dubbo mailing list or Stack Overflow for a step by step guide.