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handleRequest.js
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handleRequest.js
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'use strict'
const { validate: validateSchema } = require('./validation')
const { hookRunner, hookIterator } = require('./hooks')
const wrapThenable = require('./wrapThenable')
const {
kReplyIsError,
kRouteContext
} = require('./symbols')
function handleRequest (err, request, reply) {
if (reply.sent === true) return
if (err != null) {
reply[kReplyIsError] = true
reply.send(err)
return
}
const method = request.raw.method
const headers = request.headers
const context = request[kRouteContext]
if (method === 'GET' || method === 'HEAD' || method === 'SEARCH') {
handler(request, reply)
return
}
const contentType = headers['content-type']
if (method === 'POST' || method === 'PUT' || method === 'PATCH' || method === 'TRACE') {
if (contentType === undefined) {
if (
headers['transfer-encoding'] === undefined &&
(headers['content-length'] === '0' || headers['content-length'] === undefined)
) { // Request has no body to parse
handler(request, reply)
} else {
context.contentTypeParser.run('', handler, request, reply)
}
} else {
context.contentTypeParser.run(contentType, handler, request, reply)
}
return
}
if (method === 'OPTIONS' || method === 'DELETE') {
if (
contentType !== undefined &&
(
headers['transfer-encoding'] !== undefined ||
headers['content-length'] !== undefined
)
) {
context.contentTypeParser.run(contentType, handler, request, reply)
} else {
handler(request, reply)
}
return
}
// Return 404 instead of 405 see https://github.com/fastify/fastify/pull/862 for discussion
handler(request, reply)
}
function handler (request, reply) {
try {
if (request[kRouteContext].preValidation !== null) {
hookRunner(
request[kRouteContext].preValidation,
hookIterator,
request,
reply,
preValidationCallback
)
} else {
preValidationCallback(null, request, reply)
}
} catch (err) {
preValidationCallback(err, request, reply)
}
}
function preValidationCallback (err, request, reply) {
if (reply.sent === true) return
if (err != null) {
reply[kReplyIsError] = true
reply.send(err)
return
}
const result = validateSchema(reply[kRouteContext], request)
if (result) {
if (reply[kRouteContext].attachValidation === false) {
reply.send(result)
return
}
reply.request.validationError = result
}
// preHandler hook
if (request[kRouteContext].preHandler !== null) {
hookRunner(
request[kRouteContext].preHandler,
hookIterator,
request,
reply,
preHandlerCallback
)
} else {
preHandlerCallback(null, request, reply)
}
}
function preHandlerCallback (err, request, reply) {
if (reply.sent) return
if (err != null) {
reply[kReplyIsError] = true
reply.send(err)
return
}
let result
try {
result = request[kRouteContext].handler(request, reply)
} catch (err) {
reply[kReplyIsError] = true
reply.send(err)
return
}
if (result !== undefined) {
if (result !== null && typeof result.then === 'function') {
wrapThenable(result, reply)
} else {
reply.send(result)
}
}
}
module.exports = handleRequest
module.exports[Symbol.for('internals')] = { handler, preHandlerCallback }