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parse & expose error codes

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Jannis R 2018-12-16 23:47:36 +01:00 • committed by Jannis Redmann
parent ccfeaecef9
commit b144dd5358
2 changed files with 194 additions and 3 deletions
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179
lib/errors.js Normal file
View file

@ -0,0 +1,179 @@
'use strict'
const ACCESS_DENIED = 'ACCESS_DENIED'
const INVALID_REQUEST = 'INVALID_REQUEST'
const NOT_FOUND = 'NOT_FOUND'
const SERVER_ERROR = 'SERVER_ERROR'
// https://gist.github.com/derhuerst/79d49c0f04c1c192a5d15756e5af575f/edit
const byErrorCode = Object.assign(Object.create(null), {
AUTH: {
isClient: true,
code: ACCESS_DENIED,
message: 'invalid or missing authentication data'
},
R0001: {
isClient: true,
code: INVALID_REQUEST,
message: 'unknown method'
},
R0002: {
isClient: true,
code: INVALID_REQUEST,
message: 'invalid or missing request parameters'
},
R0007: {
isServer: true,
code: SERVER_ERROR,
message: 'internal communication error'
},
R5000: {
isClient: true,
code: ACCESS_DENIED,
message: 'access denied'
},
S1: {
isServer: true,
code: SERVER_ERROR,
message: 'journeys search: a connection to the backend server couldn\'t be established'
},
LOCATION: {
isClient: true,
code: INVALID_REQUEST,
message: 'location/stop not found'
},
H390: {
isClient: true,
code: INVALID_REQUEST,
message: 'journeys search: departure/arrival station replaced'
},
H410: {
// todo: or is it a client error?
// todo: statusCode?
isServer: true,
code: SERVER_ERROR,
message: 'journeys search: incomplete response due to timetable change'
},
H455: {
isClient: true,
code: INVALID_REQUEST,
message: 'journeys search: prolonged stop'
},
H460: {
isClient: true,
code: INVALID_REQUEST,
message: 'journeys search: stop(s) passed multiple times'
},
H500: {
isClient: true,
code: INVALID_REQUEST,
message: 'journeys search: too many trains, connection is not complete'
},
H890: {
isClient: true,
code: NOT_FOUND,
message: 'journeys search unsuccessful'
},
H891: {
isClient: true,
code: NOT_FOUND,
message: 'journeys search: no route found, try with an intermediate stations'
},
H892: {
isClient: true,
code: INVALID_REQUEST,
message: 'journeys search: query too complex, try less intermediate stations'
},
H895: {
isClient: true,
code: INVALID_REQUEST,
message: 'journeys search: departure & arrival are too near'
},
H899: {
// todo: or is it a client error?
// todo: statusCode?
isServer: true,
code: SERVER_ERROR,
message: 'journeys search unsuccessful or incomplete due to timetable change'
},
H900: {
// todo: or is it a client error?
// todo: statusCode?
isServer: true,
code: SERVER_ERROR,
message: 'journeys search unsuccessful or incomplete due to timetable change'
},
H9220: {
isClient: true,
code: NOT_FOUND,
message: 'journeys search: no stations found close to the address'
},
H9230: {
isServer: true,
code: SERVER_ERROR,
message: 'journeys search: an internal error occured'
},
H9240: {
isClient: true,
code: NOT_FOUND,
message: 'journeys search unsuccessful'
},
H9250: {
isServer: true,
code: SERVER_ERROR,
message: 'journeys search: leg query interrupted'
},
H9260: {
isClient: true,
code: INVALID_REQUEST,
message: 'journeys search: unknown departure station'
},
H9280: {
isClient: true,
code: INVALID_REQUEST,
message: 'journeys search: unknown intermediate station'
},
H9300: {
isClient: true,
code: INVALID_REQUEST,
message: 'journeys search: unknown arrival station'
},
H9320: {
isClient: true,
code: INVALID_REQUEST,
message: 'journeys search: the input is incorrect or incomplete'
},
H9360: {
isClient: true,
code: INVALID_REQUEST,
message: 'journeys search: error in a data field'
},
H9380: {
isClient: true,
code: INVALID_REQUEST,
message: 'journeys search: departure/arrival/intermediate station defined more than once'
},
SQ001: {
isServer: true,
code: SERVER_ERROR,
message: 'no departures/arrivals data available'
},
SQ005: {
isClient: true,
code: NOT_FOUND,
message: 'no trips found'
},
TI001: {
isServer: true,
code: SERVER_ERROR,
message: 'no trip info available'
}
})
module.exports = {
ACCESS_DENIED,
INVALID_REQUEST,
NOT_FOUND,
SERVER_ERROR,
byErrorCode
}

18
lib/request.js
View file

@ -9,6 +9,7 @@ const captureStackTrace = DEV ? require('capture-stack-trace') : () => {}
const {stringify} = require('qs')
const Promise = require('pinkie-promise')
const {fetch} = require('fetch-ponyfill')({Promise})
const {byErrorCode} = require('./errors')
let id
try {
@ -26,6 +27,17 @@ const randomizeUserAgent = (userAgent) => {
const md5 = input => createHash('md5').update(input).digest()
const addErrorInfo = (err, errorCode, errorText) => {
if (byErrorCode[errorCode]) {
Object.assign(err, byErrorCode[errorCode])
if (errorCode) err.hafasErrorCode = errorCode
if (errorText) err.hafasErrorMessage = errorText
} else {
err.code = errorCode || null
err.message = errorText || errorCode || null
}
}
const request = (profile, userAgent, opt, data) => {
const body = profile.transformReqBody({
lang: opt.language || 'en', // todo: is it `eng` actually?
@ -72,7 +84,7 @@ const request = (profile, userAgent, opt, data) => {
// Async stack traces are not supported everywhere yet, so we create our own.
const err = new Error()
err.isHafasError = true
err.isHafasError = true // todo: rename to `isHafasClientError`
err.request = body
err.url = url
captureStackTrace(err)
@ -90,7 +102,7 @@ const request = (profile, userAgent, opt, data) => {
if (DEBUG) console.error(JSON.stringify(b))
if (b.err && b.err !== 'OK') {
err.message = b.err
addErrorInfo(err, b.err, b.errTxt)
throw err
}
if (!b.svcResL || !b.svcResL[0]) {
@ -98,7 +110,7 @@ const request = (profile, userAgent, opt, data) => {
throw err
}
if (b.svcResL[0].err !== 'OK') {
err.message = b.svcResL[0].errTxt || b.svcResL[0].err
addErrorInfo(err, b.svcResL[0].err, b.svcResL[0].errTxt)
throw err
}
const d = b.svcResL[0].res