spring-cloud / spring-cloud/spring-cloud-gateway

Extract template variables from Header

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#1,010 4 comments 2 reactions 0 assignees View on GitHub

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enhancement
Dominant language
Java
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Forks
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Avg merge
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Merged PRs (30d)
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Description

Enhancement

It would be nice if have a template variable resolver for headers as we have for Path and Host

      predicates:
        - Header=userId, {userId}
      filters:
        - SetPath=/users/{userId}

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the existing template-variable resolution for Path and Host, then find the Header predicate and SetPath filter entry points. Determine how header values should be exposed to template resolution and add coverage for the shown userId examples. Done means a header value can be reused in both predicate and path templates.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, spring, spring-boot
Domain
api, backend
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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