buildOptionalHeaderReqId() — fastify Function Reference

Architecture documentation for the buildOptionalHeaderReqId() function in req-id-gen-factory.js from the fastify codebase.

Function javascript CoreKernel InstanceFactory called by 1

Entity Profile

CoreKernel→ InstanceFactory→ buildOptionalHeaderReqId() — fastify Function Reference

Dependency Diagram

graph TD
  6ce28c82_f505_bdd9_725d_5afc88222f48["buildOptionalHeaderReqId()"]
  a459b50d_6bda_52b1_6093_9868b8f762c9["req-id-gen-factory.js"]
  6ce28c82_f505_bdd9_725d_5afc88222f48 -->|defined in| a459b50d_6bda_52b1_6093_9868b8f762c9
  5d6bfca2_7a09_3a50_8649_149055835528["reqIdGenFactory()"]
  5d6bfca2_7a09_3a50_8649_149055835528 -->|calls| 6ce28c82_f505_bdd9_725d_5afc88222f48
  style 6ce28c82_f505_bdd9_725d_5afc88222f48 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

lib/req-id-gen-factory.js lines 43–47

function buildOptionalHeaderReqId (requestIdHeader, genReqId) {
  return function (req) {
    return req.headers[requestIdHeader] || genReqId(req)
  }
}