trustwallet-assets/script/action/binance.ts
Adam R 6276c67e36
[internal] Optimize BEP asset info retrieval from dex (rate limit) (#3091)
* Optimize BEP asset info retrieval from dex (rate limit).

* Sync fix.

Co-authored-by: Catenocrypt <catenocrypt@users.noreply.github.com>
2020-08-06 21:36:42 +02:00

140 lines
5.3 KiB
TypeScript

import axios from "axios";
import * as bluebird from "bluebird";
import * as fs from "fs";
import * as path from "path";
import * as chalk from 'chalk';
import * as config from "../common/config";
import { ActionInterface, CheckStepInterface } from "./interface";
import { getChainAssetsPath } from "../common/repo-structure";
import { Binance } from "../common/blockchains";
import { readDirSync } from "../common/filesystem";
import {
getChainAssetLogoPath,
getChainBlacklistPath
} from "../common/repo-structure";
const binanceChain = "binance"
const binanceUrlTokens2 = config.getConfig("binance_url_tokens2", "https://dex-atlantic.binance.org/api/v1/tokens?limit=1000");
const binanceUrlTokens8 = config.getConfig("binance_url_tokens8", "https://dex-atlantic.binance.org/api/v1/mini/tokens?limit=1000");
const binanceUrlTokenAssets = config.getConfig("binance_url_token_assets", "https://explorer.binance.org/api/v1/assets?page=1&rows=1000");
var cachedAssets = [];
async function retrieveBep2AssetList(): Promise<any[]> {
console.log(` Retrieving token asset infos from: ${binanceUrlTokenAssets}`);
const { assetInfoList } = await axios.get(binanceUrlTokenAssets).then(r => r.data);
console.log(` Retrieved ${assetInfoList.length} token asset infos`);
return assetInfoList
}
async function retrieveAssets(): Promise<any[]> {
// cache results because of rate limit, used more than once
if (cachedAssets.length == 0) {
console.log(` Retrieving token infos (${binanceUrlTokens2}, ${binanceUrlTokens8})`);
const bep2assets = await axios.get(binanceUrlTokens2);
const bep8assets = await axios.get(binanceUrlTokens8);
cachedAssets = bep2assets.data.concat(bep8assets.data);
}
console.log(` Using ${cachedAssets.length} assets`);
return cachedAssets;
}
export async function retrieveAssetSymbols(): Promise<string[]> {
const assets = await retrieveAssets();
const symbols = assets.map(({ symbol }) => symbol);
return symbols;
}
function fetchImage(url) {
return axios.get(url, { responseType: "stream" })
.then(r => r.data)
.catch(err => {
throw `Error fetchImage: ${url} ${err.message}`;
});
}
/// Return: array with images to fetch; {asset, assetImg}
export function findImagesToFetch(assetInfoList: any, blacklist: string[]): any[] {
let toFetch: any[] = [];
console.log(`Checking for asset images to be fetched`);
assetInfoList.forEach(({asset, assetImg}) => {
process.stdout.write(`.${asset} `);
if (assetImg) {
if (blacklist.indexOf(asset) != -1) {
console.log();
console.log(`${asset} is blacklisted`);
} else {
const imagePath = getChainAssetLogoPath(binanceChain, asset);
if (!fs.existsSync(imagePath)) {
console.log(chalk.red(`Missing image: ${asset}`));
toFetch.push({asset, assetImg});
}
}
}
});
console.log();
console.log(`${toFetch.length} asset image(s) to be fetched`);
return toFetch;
}
async function fetchMissingImages(toFetch: any[]): Promise<string[]> {
console.log(`Attempting to fetch ${toFetch.length} asset image(s)`);
let fetchedAssets: string[] = [];
await bluebird.each(toFetch, async ({ asset, assetImg }) => {
if (assetImg) {
const imagePath = getChainAssetLogoPath(binanceChain, asset);
fs.mkdir(path.dirname(imagePath), err => {
if (err && err.code != `EEXIST`) throw err;
});
await fetchImage(assetImg).then(buffer => {
buffer.pipe(fs.createWriteStream(imagePath));
fetchedAssets.push(asset)
console.log(`Fetched image ${asset} ${imagePath} from ${assetImg}`)
});
}
});
console.log();
return fetchedAssets;
}
export class BinanceAction implements ActionInterface {
getName(): string { return "Binance chain"; }
getChecks(): CheckStepInterface[] {
return [
{
getName: () => { return "Binance chain; assets must exist on chain"},
check: async () => {
var error: string = "";
const tokenSymbols = await retrieveAssetSymbols();
const assets = readDirSync(getChainAssetsPath(Binance));
assets.forEach(asset => {
if (!(tokenSymbols.indexOf(asset) >= 0)) {
error += `Asset ${asset} missing on chain\n`;
}
});
console.log(` ${assets.length} assets checked.`);
return error;
}
},
];
}
fix = null;
async update(): Promise<void> {
// retrieve missing token images; BEP2 (bep8 not supported)
const bep2InfoList = await retrieveBep2AssetList();
const blacklist: string[] = require(getChainBlacklistPath(binanceChain));
const toFetch = findImagesToFetch(bep2InfoList, blacklist);
const fetchedAssets = await fetchMissingImages(toFetch);
if (fetchedAssets.length > 0) {
console.log(`Fetched ${fetchedAssets.length} asset(s):`);
fetchedAssets.forEach(asset => console.log(` ${asset}`));
}
}
}