4f96b9ef63
* Consolidate metrics updates into one batch job * Try batching updates of metrics * Don't look up all bets again for all contracts * Tidying up * Make computeTotalPool less needlessly inefficient looking
125 lines
3.3 KiB
TypeScript
125 lines
3.3 KiB
TypeScript
import * as admin from 'firebase-admin'
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import { chunk } from 'lodash'
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import { Contract } from '../../common/contract'
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import { PrivateUser, User } from '../../common/user'
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export const log = (...args: unknown[]) => {
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console.log(`[${new Date().toISOString()}]`, ...args)
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}
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export const logMemory = () => {
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const used = process.memoryUsage()
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for (const [k, v] of Object.entries(used)) {
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log(`${k} ${Math.round((v / 1024 / 1024) * 100) / 100} MB`)
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}
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}
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type UpdateSpec = {
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doc: admin.firestore.DocumentReference
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fields: { [k: string]: unknown }
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}
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export const writeUpdatesAsync = async (
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db: admin.firestore.Firestore,
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updates: UpdateSpec[],
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batchSize = 500 // 500 = Firestore batch limit
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) => {
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const chunks = chunk(updates, batchSize)
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for (let i = 0; i < chunks.length; i++) {
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log(`${i * batchSize}/${updates.length} updates written...`)
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const batch = db.batch()
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for (const { doc, fields } of chunks[i]) {
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batch.update(doc, fields)
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}
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await batch.commit()
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}
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}
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export const isProd =
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admin.instanceId().app.options.projectId === 'mantic-markets'
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export const getDoc = async <T>(collection: string, doc: string) => {
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const snap = await admin.firestore().collection(collection).doc(doc).get()
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return snap.exists ? (snap.data() as T) : undefined
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}
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export const getValue = async <T>(ref: admin.firestore.DocumentReference) => {
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const snap = await ref.get()
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return snap.exists ? (snap.data() as T) : undefined
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}
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export const getValues = async <T>(query: admin.firestore.Query) => {
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const snap = await query.get()
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return snap.docs.map((doc) => doc.data() as T)
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}
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export const getContract = (contractId: string) => {
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return getDoc<Contract>('contracts', contractId)
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}
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export const getUser = (userId: string) => {
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return getDoc<User>('users', userId)
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}
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export const getPrivateUser = (userId: string) => {
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return getDoc<PrivateUser>('private-users', userId)
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}
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export const getUserByUsername = async (username: string) => {
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const snap = await firestore
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.collection('users')
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.where('username', '==', username)
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.get()
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return snap.empty ? undefined : (snap.docs[0].data() as User)
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}
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const firestore = admin.firestore()
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const updateUserBalance = (
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userId: string,
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delta: number,
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isDeposit = false
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) => {
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return firestore.runTransaction(async (transaction) => {
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const userDoc = firestore.doc(`users/${userId}`)
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const userSnap = await transaction.get(userDoc)
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if (!userSnap.exists) return
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const user = userSnap.data() as User
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const newUserBalance = user.balance + delta
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// if (newUserBalance < 0)
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// throw new Error(
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// `User (${userId}) balance cannot be negative: ${newUserBalance}`
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// )
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if (isDeposit) {
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const newTotalDeposits = (user.totalDeposits || 0) + delta
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transaction.update(userDoc, { totalDeposits: newTotalDeposits })
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}
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transaction.update(userDoc, { balance: newUserBalance })
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})
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}
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export const payUser = (userId: string, payout: number, isDeposit = false) => {
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if (!isFinite(payout)) throw new Error('Payout is not finite: ' + payout)
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return updateUserBalance(userId, payout, isDeposit)
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}
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export const chargeUser = (
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userId: string,
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charge: number,
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isAnte?: boolean
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) => {
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if (!isFinite(charge) || charge <= 0)
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throw new Error('User charge is not positive: ' + charge)
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return updateUserBalance(userId, -charge, isAnte)
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}
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