preHandlerCallback() — fastify Function Reference

Architecture documentation for the preHandlerCallback() function in handle-request.js from the fastify codebase.

Function javascript CoreKernel LifecycleManager calls 1 called by 1

Entity Profile

CoreKernel→ LifecycleManager→ preHandlerCallback() — fastify Function Reference

Dependency Diagram

graph TD
  7ceb92f0_a84e_713c_7051_2908ca79dd9e["preHandlerCallback()"]
  5f4e2742_950b_3da4_4ca3_7033016d7828["handle-request.js"]
  7ceb92f0_a84e_713c_7051_2908ca79dd9e -->|defined in| 5f4e2742_950b_3da4_4ca3_7033016d7828
  910429e3_db8b_fa1f_e3fe_171dde1614b6["validationCompleted()"]
  910429e3_db8b_fa1f_e3fe_171dde1614b6 -->|calls| 7ceb92f0_a84e_713c_7051_2908ca79dd9e
  24aeb44c_b4f6_170d_7d02_2fc8213613f0["preHandlerCallbackInner()"]
  7ceb92f0_a84e_713c_7051_2908ca79dd9e -->|calls| 24aeb44c_b4f6_170d_7d02_2fc8213613f0
  style 7ceb92f0_a84e_713c_7051_2908ca79dd9e fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

lib/handle-request.js lines 128–147

function preHandlerCallback (err, request, reply) {
  if (reply.sent) return

  const context = request[kRouteContext]

  if (!channels.hasSubscribers || context[kFourOhFourContext] === null) {
    preHandlerCallbackInner(err, request, reply)
  } else {
    const store = {
      request,
      reply,
      async: false,
      route: {
        url: context.config.url,
        method: context.config.method
      }
    }
    channels.start.runStores(store, preHandlerCallbackInner, undefined, err, request, reply, store)
  }
}