StefanMewes/send2ereader
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rewrite random function

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This commit is contained in:
daniel-j
2020-03-04 13:50:50 +01:00
parent a592adf834
commit fd9edc7690
1 changed files with 5 additions and 11 deletions
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16
index.js
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@@ -12,16 +12,11 @@ const { spawn } = require('child_process')
const expireDelay = 20 const expireDelay = 20
const port = 3001 const port = 3001
const maxFileSize = 1024 * 1024 * 400 const maxFileSize = 1024 * 1024 * 400
const keyMin = 1000
const keyMax = 9999
function uniqueRandom (minimum, maximum) { function random(minimum, maximum) {
let previousValue return Math.floor((Math.random() * (maximum - minimum + 1)) + minimum)
return function random() {
const number = Math.floor(
(Math.random() * (maximum - minimum + 1)) + minimum
)
previousValue = number === previousValue && minimum !== maximum ? random() : number
return previousValue
}
} }
function removeKey (key) { function removeKey (key) {
@@ -52,7 +47,6 @@ function expireKey (key) {
return timer return timer
} }
const random = uniqueRandom(1000, 9999)
const app = new Koa() const app = new Koa()
app.context.keys = new Map() app.context.keys = new Map()
const router = new Router() const router = new Router()
@@ -96,7 +90,7 @@ router.get('/generate', async ctx => {
let key = null let key = null
let attempts = 0 let attempts = 0
do { do {
key = random().toString() key = random(keyMin, keyMax).toString()
console.log(attempts, ctx.keys.size, key) console.log(attempts, ctx.keys.size, key)
if (attempts > ctx.keys.size) { if (attempts > ctx.keys.size) {
console.error('Can\'t generate more keys, map is full.') console.error('Can\'t generate more keys, map is full.')