├── .eslintrc.js ├── .gitignore ├── .gitmodules ├── Procfile ├── README.md ├── cache.js ├── docker ├── .dockerignore ├── Dockerfile ├── build.sh ├── config │ ├── nginx.conf │ └── supervisord.conf ├── remove_images.sh ├── sites-enabled │ ├── default │ └── default_cache ├── start.sh └── stop.sh ├── package-lock.json ├── package.json ├── pull.sh └── server.js /.eslintrc.js: -------------------------------------------------------------------------------- 1 | module.exports = { 2 | "extends": "airbnb-base", 3 | "plugins": [ 4 | "import" 5 | ], 6 | rules: { 7 | "no-param-reassign": ["error", { "props": true, "ignorePropertyModificationsFor": ["req"] }], 8 | "no-unused-vars": ["error", {"argsIgnorePattern": "next"}], 9 | } 10 | }; 11 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | .DS_Store 2 | node_modules 3 | .node* 4 | storage_deadOrdersCache 5 | storage_eventsCache 6 | storage_gitterMessagesCache 7 | storage_ordersCache 8 | storage_messagesCache 9 | report* 10 | provider 11 | -------------------------------------------------------------------------------- /.gitmodules: -------------------------------------------------------------------------------- 1 | [submodule "etherdelta.github.io"] 2 | path = etherdelta.github.io 3 | url = https://github.com/etherdelta/etherdelta.github.io.git 4 | -------------------------------------------------------------------------------- /Procfile: -------------------------------------------------------------------------------- 1 | web: node server.js 2 2 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Cache 2 | 3 | ## Installation 4 | 5 | * `apt-get update` 6 | * `apt-get -y install software-properties-common curl build-essential nload vnstat python` 7 | * `apt-get -y install git nginx` 8 | * `apt-get -y install build-essential libssl-dev` 9 | * `curl -sL https://raw.githubusercontent.com/creationix/nvm/v0.31.0/install.sh -o install_nvm.sh` 10 | * `bash install_nvm.sh` 11 | * `nvm install 8.1.0` 12 | * `npm install -g pm2` 13 | * Copy docker/config/nginx.conf into /etc/nginx/nginx.conf 14 | * Copy docker/sites-enabled/default_cache into /etc/nginx/sites-enabled/default 15 | * Copy SSL certificates (fullcert.pem and privkey.pem) into /certs 16 | 17 | ## Git 18 | 19 | * `cd ~ && git clone --recursive https://github.com/etherdelta/public_api.git` 20 | * `cd ~/public_api && npm install` 21 | * To update: `sh pull.sh` and `npm install` 22 | 23 | ## Start 24 | 25 | * `cd ~ && pm2 start cache.js` 26 | 27 | ## Monitor 28 | 29 | * `pm2 list`, `pm2 log` 30 | 31 | # API-main 32 | 33 | ## Installation 34 | 35 | * `wget http://d1h4xl4cr1h0mo.cloudfront.net/v1.6.8/x86_64-unknown-linux-gnu/parity_1.6.8_amd64.deb` 36 | * `dpkg -i parity_1.6.8_amd64.deb` 37 | * `apt-get update` 38 | * `apt-get -y install software-properties-common curl build-essential nload vnstat python` 39 | * `apt-get -y install git nginx` 40 | * `apt-get -y install build-essential libssl-dev` 41 | * `curl -sL https://raw.githubusercontent.com/creationix/nvm/v0.31.0/install.sh -o install_nvm.sh` 42 | * `bash install_nvm.sh` 43 | * `nvm install 8.1.0` 44 | * `npm install -g pm2` 45 | * Copy docker/config/nginx.conf into /etc/nginx/nginx.conf 46 | * Copy docker/sites-enabled/default into /etc/nginx/sites-enabled/default 47 | * Copy SSL certificates (fullcert.pem and privkey.pem) into /certs 48 | 49 | ## Git 50 | 51 | * `cd ~ && git clone --recursive https://github.com/etherdelta/public_api.git` 52 | * `cd ~/public_api && npm install` 53 | * `cd ~/public_api/etherdelta.github.io && npm install` 54 | * `cd ~/public_api/etherdelta.github.io/common && npm install` 55 | * To update: `sh pull.sh` and `npm install` 56 | 57 | ## Start 58 | 59 | * `parity daemon ~/parity.pid` 60 | * `cd ~ && pm2 start server.js` 61 | 62 | ## Monitor 63 | 64 | * `pm2 list`, `pm2 log` 65 | -------------------------------------------------------------------------------- /cache.js: -------------------------------------------------------------------------------- 1 | const bodyParser = require('body-parser'); 2 | const sha256 = require('sha256'); 3 | const app = require('express')(); 4 | const http = require('http').Server(app); 5 | const compression = require('compression'); 6 | const request = require('request'); 7 | 8 | const hashes = {}; 9 | const pages = {}; 10 | 11 | const interval = 60 * 1000; 12 | const api = 'https://api-main.etherdelta.com'; 13 | 14 | app.use(compression()); 15 | app.use(bodyParser.json()); 16 | app.use(bodyParser.urlencoded({ extended: true })); 17 | 18 | app.use((req, res, next) => { 19 | res.header('Access-Control-Allow-Origin', '*'); 20 | res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept'); 21 | next(); 22 | }); 23 | 24 | app.get('/', (req, res) => { 25 | res.redirect('https://etherdelta.github.io'); 26 | }); 27 | 28 | function fetch(page, callback) { 29 | const now = (new Date()).getTime(); 30 | if (pages[page] && now < pages[page].updated + interval) { 31 | callback(null, pages[page].data); 32 | } else if (pages[page]) { 33 | callback(null, pages[page]); 34 | pages[page].updated = (new Date()).getTime(); 35 | request(`${api}${page}`, (error, response, body) => { 36 | try { 37 | const data = JSON.parse(body); 38 | pages[page] = { 39 | data, 40 | updated: (new Date()).getTime(), 41 | }; 42 | } catch (err) { 43 | // do nothing 44 | } 45 | }); 46 | } else { 47 | request(`${api}${page}`, (error, response, body) => { 48 | try { 49 | const data = JSON.parse(body); 50 | pages[page] = { 51 | data, 52 | updated: (new Date()).getTime(), 53 | }; 54 | callback(null, data); 55 | } catch (err) { 56 | callback('error', null); 57 | } 58 | }); 59 | } 60 | } 61 | 62 | app.get('/returnTicker', (req, res) => { 63 | const page = '/returnTicker'; 64 | fetch(page, (err, result) => { 65 | if (err) { 66 | res.status(500); 67 | res.json('error'); 68 | } else { 69 | res.json(result); 70 | } 71 | }); 72 | }); 73 | 74 | app.get('/events', (req, res) => { 75 | const page = '/events'; 76 | fetch(page, (err, result) => { 77 | if (err) { 78 | res.status(500); 79 | res.json('error'); 80 | } else { 81 | res.json(result); 82 | } 83 | }); 84 | }); 85 | 86 | app.get('/events/:nonce', (req, res) => { 87 | const page = '/events'; 88 | fetch(page, (err, result) => { 89 | if (err) { 90 | res.status(500); 91 | res.json('error'); 92 | } else { 93 | const hash = sha256(JSON.stringify(result ? result : '')); // eslint-disable-line no-unneeded-ternary 94 | const nonce = `${page}/${req.params.nonce}`; 95 | if (hashes[nonce] !== hash) { 96 | hashes[nonce] = hash; 97 | res.json(result); 98 | } else { 99 | res.json(undefined); 100 | } 101 | } 102 | }); 103 | }); 104 | 105 | app.get('/events/:nonce/:since', (req, res) => { 106 | const since = req.params.since; 107 | const page = '/events'; 108 | fetch(page, (err, result) => { 109 | if (err) { 110 | res.status(500); 111 | res.json('error'); 112 | } else { 113 | const initialEvents = result.events || {}; 114 | const filteredEvents = {}; 115 | Object.keys(initialEvents).forEach((x) => { 116 | if (initialEvents[x].blockNumber >= since) { 117 | filteredEvents[x] = initialEvents[x]; 118 | } 119 | }); 120 | const data = { events: filteredEvents, blockNumber: pages[page].data.blockNumber }; 121 | const hash = sha256(JSON.stringify(data ? data : '')); // eslint-disable-line no-unneeded-ternary 122 | const nonce = `${page}/since/${req.params.nonce}`; 123 | if (hashes[nonce] !== hash) { 124 | hashes[nonce] = hash; 125 | res.json(result); 126 | } else { 127 | res.json(undefined); 128 | } 129 | } 130 | }); 131 | }); 132 | 133 | app.get('/trades', (req, res) => { 134 | const page = '/trades'; 135 | fetch(page, (err, result) => { 136 | if (err) { 137 | res.status(500); 138 | res.json('error'); 139 | } else { 140 | res.json(result); 141 | } 142 | }); 143 | }); 144 | 145 | app.get('/orders', (req, res) => { 146 | const page = '/orders'; 147 | fetch(page, (err, result) => { 148 | if (err) { 149 | res.status(500); 150 | res.json('error'); 151 | } else { 152 | res.json(result); 153 | } 154 | }); 155 | }); 156 | 157 | app.get('/orders/:tokenA/:tokenB', (req, res) => { 158 | const page = `/orders/${req.params.tokenA}/${req.params.tokenB}`; 159 | fetch(page, (err, result) => { 160 | if (err) { 161 | res.status(500); 162 | res.json('error'); 163 | } else { 164 | res.json(result); 165 | } 166 | }); 167 | }); 168 | 169 | app.get('/topOrders', (req, res) => { 170 | const page = '/topOrders'; 171 | fetch(page, (err, result) => { 172 | if (err) { 173 | res.status(500); 174 | res.json('error'); 175 | } else { 176 | res.json(result); 177 | } 178 | }); 179 | }); 180 | 181 | app.get('/topOrders/:nonce', (req, res) => { 182 | const page = '/topOrders'; 183 | fetch(page, (err, result) => { 184 | if (err) { 185 | res.status(500); 186 | res.json('error'); 187 | } else { 188 | const hash = sha256(JSON.stringify(result ? result : '')); // eslint-disable-line no-unneeded-ternary 189 | const nonce = `${page}/${req.params.nonce}`; 190 | if (hashes[nonce] !== hash) { 191 | hashes[nonce] = hash; 192 | res.json(result); 193 | } else { 194 | res.json(undefined); 195 | } 196 | } 197 | }); 198 | }); 199 | 200 | app.get('/orders/:nonce', (req, res) => { 201 | const page = '/orders'; 202 | fetch(page, (err, result) => { 203 | if (err) { 204 | res.status(500); 205 | res.json('error'); 206 | } else { 207 | const hash = sha256(JSON.stringify(result ? result : '')); // eslint-disable-line no-unneeded-ternary 208 | const nonce = `${page}/${req.params.nonce}`; 209 | if (hashes[nonce] !== hash) { 210 | hashes[nonce] = hash; 211 | res.json(result); 212 | } else { 213 | res.json(undefined); 214 | } 215 | } 216 | }); 217 | }); 218 | 219 | app.get('/orders/:nonce/:tokenA/:tokenB', (req, res) => { 220 | const page = `/orders/${req.params.tokenA}/${req.params.tokenB}`; 221 | fetch(page, (err, result) => { 222 | if (err) { 223 | res.status(500); 224 | res.json('error'); 225 | } else { 226 | const hash = sha256(JSON.stringify(result ? result : '')); // eslint-disable-line no-unneeded-ternary 227 | const nonce = `${page}/${req.params.nonce}`; 228 | if (hashes[nonce] !== hash) { 229 | hashes[nonce] = hash; 230 | res.json(result); 231 | } else { 232 | res.json(undefined); 233 | } 234 | } 235 | }); 236 | }); 237 | 238 | app.post('/message', (req, res) => { 239 | const page = '/message'; 240 | request.post(`${api}${page}`, { form: req.body }, (error, response, body) => { 241 | try { 242 | res.json(JSON.parse(body)); 243 | } catch (err) { 244 | res.json('failure'); 245 | } 246 | }); 247 | }); 248 | 249 | app.use((err, req, res, next) => { 250 | console.error(err); 251 | res.status(500); 252 | res.json({ error: 'An error occurred.' }); 253 | }); 254 | 255 | const port = process.env.PORT || 8001; 256 | http.listen(port, () => { 257 | console.log(`listening on port ${port}`); 258 | }); 259 | -------------------------------------------------------------------------------- /docker/.dockerignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | -------------------------------------------------------------------------------- /docker/Dockerfile: -------------------------------------------------------------------------------- 1 | FROM ubuntu:14.04 2 | 3 | RUN apt-get upgrade 4 | RUN apt-get update 5 | RUN apt-get -y install software-properties-common curl build-essential 6 | RUN curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash - 7 | RUN apt-get -y install git supervisor nginx nodejs 8 | RUN apt-get clean 9 | RUN rm -rf /var/lib/apt/lists/* 10 | 11 | RUN echo 55 && git clone --recursive https://github.com/etherdelta/public_api.git 12 | RUN cd /public_api && npm install 13 | RUN cd /public_api/etherdelta.github.io && npm install 14 | ADD config/supervisord.conf /etc/supervisor/conf.d/supervisord.conf 15 | ADD config/nginx.conf /etc/nginx/nginx.conf 16 | ADD sites-enabled/default /etc/nginx/sites-enabled/default 17 | ADD certs /certs 18 | 19 | EXPOSE 80 20 | EXPOSE 443 21 | 22 | CMD ["/usr/bin/supervisord"] 23 | -------------------------------------------------------------------------------- /docker/build.sh: -------------------------------------------------------------------------------- 1 | docker build -t etherdelta/api -f Dockerfile . 2 | -------------------------------------------------------------------------------- /docker/config/nginx.conf: -------------------------------------------------------------------------------- 1 | user www-data; 2 | worker_processes 4; 3 | pid /run/nginx.pid; 4 | #daemon off; 5 | 6 | events { 7 | worker_connections 768; 8 | # multi_accept on; 9 | } 10 | 11 | http { 12 | 13 | ## 14 | # Basic Settings 15 | ## 16 | 17 | sendfile on; 18 | tcp_nopush on; 19 | tcp_nodelay on; 20 | keepalive_timeout 65; 21 | types_hash_max_size 2048; 22 | # server_tokens off; 23 | 24 | server_names_hash_bucket_size 128; 25 | # server_name_in_redirect off; 26 | 27 | include /etc/nginx/mime.types; 28 | default_type application/octet-stream; 29 | 30 | ## 31 | # Logging Settings 32 | ## 33 | 34 | access_log /var/log/nginx/access.log; 35 | error_log /var/log/nginx/error.log; 36 | 37 | ## 38 | # Gzip Settings 39 | ## 40 | 41 | gzip on; 42 | gzip_disable "msie6"; 43 | 44 | # gzip_vary on; 45 | # gzip_proxied any; 46 | # gzip_comp_level 6; 47 | # gzip_buffers 16 8k; 48 | # gzip_http_version 1.1; 49 | # gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript; 50 | 51 | include /etc/nginx/conf.d/*.conf; 52 | include /etc/nginx/sites-enabled/*; 53 | } 54 | -------------------------------------------------------------------------------- /docker/config/supervisord.conf: -------------------------------------------------------------------------------- 1 | [supervisord] 2 | nodaemon=true 3 | 4 | [program:nginx] 5 | command=nginx 6 | 7 | [program:api] 8 | command=bash -c "cd /public_api && node server.js" 9 | stdout_logfile=/dev/stdout 10 | stdout_logfile_maxbytes=0 11 | stderr_logfile=/dev/stderr 12 | stderr_logfile_maxbytes=0 13 | -------------------------------------------------------------------------------- /docker/remove_images.sh: -------------------------------------------------------------------------------- 1 | docker rmi $(docker images | grep "^" | awk "{print $3}") 2 | -------------------------------------------------------------------------------- /docker/sites-enabled/default: -------------------------------------------------------------------------------- 1 | upstream etherdelta { 2 | server 127.0.0.1:3000; 3 | } 4 | server { 5 | listen 443 ssl; 6 | server_name etherdelta.com www.etherdelta.com api.etherdelta.com; 7 | ssl on; 8 | 9 | ssl_certificate /certs/fullchain.pem; 10 | ssl_certificate_key /certs/privkey.pem; 11 | ssl_protocols TLSv1 TLSv1.1 TLSv1.2; 12 | ssl_prefer_server_ciphers on; 13 | ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH'; 14 | 15 | location / { 16 | proxy_pass http://etherdelta; 17 | proxy_redirect off; 18 | proxy_set_header Host $host; 19 | proxy_set_header X-Real-IP $remote_addr; 20 | proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 21 | proxy_set_header X-Forwarded-Host $server_name; 22 | proxy_read_timeout 300; 23 | proxy_connect_timeout 300; 24 | } 25 | } 26 | server { 27 | listen 80; 28 | server_name etherdelta.com www.etherdelta.com api.etherdelta.com; 29 | return 301 https://$host$request_uri; 30 | } 31 | -------------------------------------------------------------------------------- /docker/sites-enabled/default_cache: -------------------------------------------------------------------------------- 1 | upstream etherdelta { 2 | server 127.0.0.1:8001; 3 | } 4 | server { 5 | listen 443 ssl; 6 | server_name *.etherdelta.com; 7 | ssl on; 8 | 9 | ssl_certificate /certs/fullchain.pem; 10 | ssl_certificate_key /certs/privkey.pem; 11 | ssl_protocols TLSv1 TLSv1.1 TLSv1.2; 12 | ssl_prefer_server_ciphers on; 13 | ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH'; 14 | 15 | location / { 16 | proxy_pass http://etherdelta; 17 | proxy_redirect off; 18 | proxy_set_header Host $host; 19 | proxy_set_header X-Real-IP $remote_addr; 20 | proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 21 | proxy_set_header X-Forwarded-Host $server_name; 22 | proxy_read_timeout 300; 23 | proxy_connect_timeout 300; 24 | } 25 | } 26 | server { 27 | listen 80; 28 | server_name *.etherdelta.com; 29 | return 301 https://$host$request_uri; 30 | } 31 | -------------------------------------------------------------------------------- /docker/start.sh: -------------------------------------------------------------------------------- 1 | docker run -d -p 80:80 -p 443:443 -v ~/public_api/storage_ordersCache:/public_api/storage_ordersCache -v ~/public_api/provider:/public_api/provider --name etherdelta_api etherdelta/api 2 | -------------------------------------------------------------------------------- /docker/stop.sh: -------------------------------------------------------------------------------- 1 | docker stop etherdelta_api 2 | docker rm etherdelta_api 3 | docker rm $(docker ps -a -q) 4 | -------------------------------------------------------------------------------- /package-lock.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "public_api", 3 | "lockfileVersion": 1, 4 | "dependencies": { 5 | "accepts": { 6 | "version": "1.1.4", 7 | "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.1.4.tgz", 8 | "integrity": "sha1-1xyW99QdD+2iw4zRToonwEFY30o=", 9 | "dependencies": 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"sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=", 1701 | "dev": true 1702 | }, 1703 | "xtend": { 1704 | "version": "4.0.1", 1705 | "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz", 1706 | "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=", 1707 | "dev": true 1708 | } 1709 | } 1710 | } 1711 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "public_api", 3 | "description": "EtherDelta Public API", 4 | "main": "server.js", 5 | "scripts": { 6 | "start": "node server.js", 7 | "postinstall": "cd etherdelta.github.io && npm install && cd common && npm install" 8 | }, 9 | "dependencies": { 10 | "async": "^2.1.2", 11 | "body-parser": "^1.15.2", 12 | "compression": "^1.6.2", 13 | "express": "4.10.2", 14 | "express-session": "^1.14.1", 15 | "request": "^2.81.0", 16 | "sha256": "^0.2.0" 17 | }, 18 | "devDependencies": { 19 | "eslint": "^3.18.0", 20 | "eslint-config-airbnb-base": "^11.1.2", 21 | "eslint-plugin-import": "^2.2.0" 22 | } 23 | } 24 | -------------------------------------------------------------------------------- /pull.sh: -------------------------------------------------------------------------------- 1 | git pull 2 | git submodule foreach git pull origin master 3 | -------------------------------------------------------------------------------- /server.js: -------------------------------------------------------------------------------- 1 | const API = require('./etherdelta.github.io/api.js'); 2 | const bodyParser = require('body-parser'); 3 | const async = require('async'); 4 | const fs = require('fs'); 5 | const sha256 = require('sha256'); 6 | const app = require('express')(); 7 | const http = require('http').Server(app); 8 | 9 | let returnTickerData = { result: undefined }; 10 | let tradesData = { result: undefined }; 11 | const hashes = {}; 12 | let topOrders = []; 13 | let ordersByPair = {}; 14 | const lookback = (86400 * 1) / 14; 15 | const examinedEvents = {}; 16 | let eventsCache = {}; 17 | 18 | app.use(bodyParser.json()); 19 | app.use(bodyParser.urlencoded({ extended: true })); 20 | 21 | app.use((req, res, next) => { 22 | res.header('Access-Control-Allow-Origin', '*'); 23 | res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept'); 24 | next(); 25 | }); 26 | 27 | app.get('/', (req, res) => { 28 | res.redirect('https://etherdelta.github.io'); 29 | }); 30 | 31 | app.get('/returnTicker', (req, res) => { 32 | res.json(returnTickerData.result); 33 | }); 34 | 35 | app.get('/events', (req, res) => { 36 | const result = { events: eventsCache, blockNumber: API.blockTimeSnapshot.blockNumber }; 37 | res.json(result); 38 | }); 39 | 40 | app.get('/events/:nonce', (req, res) => { 41 | const result = { events: eventsCache, blockNumber: API.blockTimeSnapshot.blockNumber }; 42 | const eventsHash = sha256(JSON.stringify(result.events ? result.events : '')); 43 | const nonce = `events${req.params.nonce}`; 44 | if (hashes[nonce] !== eventsHash) { 45 | hashes[nonce] = eventsHash; 46 | res.json(result); 47 | } else { 48 | res.json(undefined); 49 | } 50 | }); 51 | 52 | app.get('/events/:nonce/:since', (req, res) => { 53 | const since = req.params.since; 54 | const events = {}; 55 | Object.keys(eventsCache).forEach((id) => { 56 | if (eventsCache[id].blockNumber >= since) { 57 | events[id] = eventsCache[id]; 58 | } 59 | }); 60 | const result = { events, blockNumber: API.blockTimeSnapshot.blockNumber }; 61 | const eventsHash = sha256(JSON.stringify(result.events ? result.events : '')); 62 | const nonce = `eventsSince${req.params.nonce}`; 63 | if (hashes[nonce] !== eventsHash) { 64 | hashes[nonce] = eventsHash; 65 | res.json(result); 66 | } else { 67 | res.json(undefined); 68 | } 69 | }); 70 | 71 | app.get('/trades', (req, res) => { 72 | res.json(tradesData.result); 73 | }); 74 | 75 | app.get('/orders', (req, res) => { 76 | const result = { orders: API.ordersCache, blockNumber: API.blockTimeSnapshot.blockNumber }; 77 | res.json(result); 78 | }); 79 | 80 | app.get('/orders/:tokenA/:tokenB', (req, res) => { 81 | const { tokenA, tokenB } = req.params; 82 | const pair = `${tokenA}/${tokenB}`; 83 | if (!ordersByPair[pair]) { 84 | ordersByPair[pair] = API.getOrdersByPair(tokenA, tokenB, 100); 85 | } 86 | const result = { orders: ordersByPair[pair], blockNumber: API.blockTimeSnapshot.blockNumber }; 87 | res.json(result); 88 | }); 89 | 90 | app.get('/topOrders', (req, res) => { 91 | const result = { orders: topOrders, blockNumber: API.blockTimeSnapshot.blockNumber }; 92 | res.json(result); 93 | }); 94 | 95 | app.get('/topOrders/:nonce', (req, res) => { 96 | const result = { orders: topOrders, blockNumber: API.blockTimeSnapshot.blockNumber }; 97 | const ordersHash = sha256(JSON.stringify(result.orders ? result.orders : '')); 98 | const nonce = `topOrders${req.params.nonce}`; 99 | if (hashes[nonce] !== ordersHash) { 100 | hashes[nonce] = ordersHash; 101 | res.json(result); 102 | } else { 103 | res.json(undefined); 104 | } 105 | }); 106 | 107 | app.get('/orders/:nonce', (req, res) => { 108 | const result = { orders: API.ordersCache, blockNumber: API.blockTimeSnapshot.blockNumber }; 109 | const ordersHash = sha256(JSON.stringify(result.orders ? result.orders : '')); 110 | const nonce = `orders${req.params.nonce}`; 111 | if (hashes[nonce] !== ordersHash) { 112 | hashes[nonce] = ordersHash; 113 | res.json(result); 114 | } else { 115 | res.json(undefined); 116 | } 117 | }); 118 | 119 | app.get('/orders/:nonce/:tokenA/:tokenB', (req, res) => { 120 | const { tokenA, tokenB } = req.params; 121 | const nonce = `ordersPair${req.params.nonce}`; 122 | const pair = `${tokenA}/${tokenB}`; 123 | if (!ordersByPair[pair]) { 124 | ordersByPair[pair] = API.getOrdersByPair(tokenA, tokenB, 100); 125 | } 126 | const result = { orders: ordersByPair[pair], blockNumber: API.blockTimeSnapshot.blockNumber }; 127 | const ordersHash = sha256(JSON.stringify(result.orders ? result.orders : '')); 128 | if (hashes[nonce] !== ordersHash) { 129 | hashes[nonce] = ordersHash; 130 | res.json(result); 131 | } else { 132 | res.json(undefined); 133 | } 134 | }); 135 | 136 | app.post('/message', (req, res) => { 137 | try { 138 | const message = JSON.parse(req.body.message); 139 | API.addOrderFromMessage(message, (err) => { 140 | if (!err) { 141 | res.json('success'); 142 | } else { 143 | res.json('failure'); 144 | } 145 | }); 146 | } catch (err) { 147 | res.json('failure'); 148 | } 149 | }); 150 | 151 | app.use((err, req, res, next) => { 152 | console.error(err); 153 | res.status(500); 154 | res.json({ error: 'An error occurred.' }); 155 | }); 156 | 157 | function updateOrders() { 158 | // refresh stale orders 159 | async.forever( 160 | (next) => { 161 | API.getBlockNumber((errBlockNumber, blockNumber) => { 162 | if (!errBlockNumber && blockNumber && blockNumber > 0) { 163 | // remove expired orders 164 | let expiredRemoves = 0; 165 | Object.keys(API.ordersCache).forEach((id) => { 166 | const order = API.ordersCache[id]; 167 | const expires = order.order.expires; 168 | if (blockNumber > expires) { 169 | delete API.ordersCache[id]; 170 | expiredRemoves += 1; 171 | } 172 | }); 173 | 174 | // remove cancelled orders 175 | let cancelRemoves = 0; 176 | Object.keys(API.eventsCache).forEach((id) => { 177 | const event = API.eventsCache[id]; 178 | if (event.event === 'Cancel' && !examinedEvents[`${id}-${event.id}`]) { 179 | examinedEvents[`${id}-${event.id}`] = true; 180 | const removes = Object.keys(API.ordersCache).filter((x) => { 181 | const order = API.ordersCache[x]; 182 | return order.order.r === event.args.r && 183 | order.order.s === event.args.s && 184 | Number(order.order.v) === Number(event.args.v); 185 | }); 186 | removes.forEach((remove) => { 187 | delete API.eventsCache[remove]; 188 | cancelRemoves += 1; 189 | }); 190 | } 191 | }); 192 | 193 | const idsAll = Object.keys(API.ordersCache); 194 | const ids = {}; 195 | 196 | // find events 197 | const eventOrdersToUpdate = []; 198 | Object.keys(API.eventsCache).forEach((id) => { 199 | const event = API.eventsCache[id]; 200 | if (!examinedEvents[`${id}-${event.id}`]) { 201 | if (event.event === 'Deposit' || event.event === 'Withdraw') { 202 | Object.keys(API.ordersCache).forEach((x) => { 203 | const order = API.ordersCache[x]; 204 | if (order.order.user === event.args.user) { 205 | eventOrdersToUpdate.push({ id: x, examinedEventsId: `${id}-${event.id}` }); 206 | } 207 | }); 208 | } else if (event.event === 'Trade') { 209 | Object.keys(API.ordersCache).forEach((x) => { 210 | const order = API.ordersCache[x]; 211 | if (order.order.user === event.args.get || order.order.user === event.args.give) { 212 | eventOrdersToUpdate.push({ id: x, examinedEventsId: `${id}-${event.id}` }); 213 | } 214 | }); 215 | } 216 | } 217 | }); 218 | 219 | const buys = {}; 220 | const sells = {}; 221 | const pairs = {}; 222 | const topN = 5; 223 | const topOrdersToUpdate = []; 224 | Object.keys(API.ordersCache).forEach((id) => { 225 | const order = API.ordersCache[id]; 226 | if (order.amount > 0) { 227 | if (!buys[`${order.order.tokenGet}/${order.order.tokenGive}`]) buys[`${order.order.tokenGet}/${order.order.tokenGive}`] = []; 228 | buys[`${order.order.tokenGet}/${order.order.tokenGive}`].push({ order, id }); 229 | pairs[`${order.order.tokenGet}/${order.order.tokenGive}`] = true; 230 | } else if (order.amount < 0) { 231 | if (!sells[`${order.order.tokenGive}/${order.order.tokenGet}`]) sells[`${order.order.tokenGive}/${order.order.tokenGet}`] = []; 232 | sells[`${order.order.tokenGive}/${order.order.tokenGet}`].push({ order, id }); 233 | pairs[`${order.order.tokenGive}/${order.order.tokenGet}`] = true; 234 | } 235 | }); 236 | Object.keys(pairs).forEach((pair) => { 237 | const buyOrders = buys[pair] || []; 238 | const sellOrders = sells[pair] || []; 239 | sellOrders.sort((a, b) => a.order.price - b.order.price || a.order.id - b.order.id); 240 | buyOrders.sort((a, b) => b.order.price - a.order.price || a.order.id - b.order.id); 241 | buyOrders.slice(0, topN).forEach((order) => { 242 | topOrdersToUpdate.push(order.id); 243 | }); 244 | sellOrders.slice(0, topN).forEach((order) => { 245 | topOrdersToUpdate.push(order.id); 246 | }); 247 | }); 248 | 249 | idsAll.sort( 250 | (a, b) => 251 | new Date(API.ordersCache[a].updated) - new Date(API.ordersCache[b].updated)); 252 | idsAll.slice(0, 100).forEach((id) => { 253 | ids[id] = true; 254 | }); 255 | // shuffle(topOrdersToUpdate).slice(0, 250).forEach((id) => { 256 | topOrdersToUpdate.forEach((id) => { 257 | if (new Date() - new Date(API.ordersCache[id].updated) > 5 * 60 * 1000) { 258 | ids[id] = true; 259 | } 260 | }); 261 | eventOrdersToUpdate.slice(0, 250).forEach((x) => { 262 | ids[x.id] = true; 263 | examinedEvents[x.examinedEventsId] = true; 264 | }); 265 | 266 | console.log(new Date(), 'All order ids', idsAll.length); 267 | console.log(new Date(), 'Removals (expired)', expiredRemoves); 268 | console.log(new Date(), 'Removals (cancelled)', cancelRemoves); 269 | console.log(new Date(), 'Ids to update via events', eventOrdersToUpdate.length); 270 | console.log(new Date(), 'Ids to update because top of order book', topOrdersToUpdate.length); 271 | console.log(new Date(), 'Ids to update in this cycle', Object.keys(ids).length); 272 | async.eachSeries( 273 | Object.keys(ids), 274 | (id, callbackEach) => { 275 | if (API.ordersCache[id]) { 276 | API.updateOrder(API.ordersCache[id], (err) => { 277 | if (err) delete API.ordersCache[id]; 278 | callbackEach(null); 279 | }); 280 | } else { 281 | callbackEach(null); 282 | } 283 | }, 284 | () => { 285 | API.saveOrders(() => { 286 | setTimeout(() => { 287 | next(); 288 | }, 1 * 1000); 289 | }); 290 | }); 291 | } else { 292 | setTimeout(() => { 293 | next(); 294 | }, 1 * 1000); 295 | } 296 | }); 297 | }, 298 | (err) => { 299 | console.log('Update order loop failed: ', err); 300 | }); 301 | } 302 | 303 | function updateData() { 304 | API.getBlockNumber((errBlockNumber, blockNumber) => { 305 | API.logs((errLogs) => { 306 | if (!errLogs && !errBlockNumber) { 307 | // delete old events 308 | Object.keys(API.eventsCache).forEach((key) => { 309 | if (API.eventsCache[key].blockNumber < blockNumber - lookback) { 310 | delete API.eventsCache[key]; 311 | } 312 | }); 313 | const eventsCacheFiltered = {}; 314 | Object.keys(API.eventsCache).sort((a, b) => 315 | API.eventsCache[b].blockNumber - API.eventsCache[a].blockNumber || 316 | API.eventsCache[b].logIndex - API.eventsCache[a].logIndex) 317 | .slice(0, 1000) 318 | .forEach((id) => { 319 | eventsCacheFiltered[id] = API.eventsCache[id]; 320 | }); 321 | eventsCache = eventsCacheFiltered; 322 | async.parallel( 323 | [ 324 | (callback) => { 325 | API.getTrades((err, result) => { 326 | if (!err) { 327 | const now = new Date(); 328 | const trades = result.trades 329 | .map((x) => { 330 | if (x.token && x.base && x.base.name === 'ETH') { 331 | if (x.amount > 0) { 332 | return { 333 | pair: `${x.token.name}-${x.base.name}`, 334 | rate: x.price, 335 | amount: API.utility.weiToEth(x.amount, API.getDivisor(x.token)), 336 | type: 'buy', 337 | date: API.blockTime(x.blockNumber), 338 | }; 339 | } 340 | return { 341 | token: `${x.token.name}-${x.base.name}`, 342 | rate: x.price, 343 | amount: API.utility.weiToEth(-x.amount, API.getDivisor(x.token)), 344 | type: 'sell', 345 | date: API.blockTime(x.blockNumber), 346 | }; 347 | } 348 | return undefined; 349 | }) 350 | .filter(x => x && now - x.date < 86400 * 10 * 1000); 351 | trades.sort((a, b) => b.date - a.date); 352 | tradesData = { updated: Date.now(), result: trades }; 353 | } 354 | callback(null, undefined); 355 | }); 356 | }, 357 | (callback) => { 358 | API.returnTicker((err, result) => { 359 | if (!err) { 360 | returnTickerData = { updated: Date.now(), result }; 361 | } 362 | callback(null, undefined); 363 | }); 364 | }, 365 | ], 366 | () => { 367 | topOrders = API.getTopOrders(); 368 | ordersByPair = {}; 369 | setTimeout(updateData, 10 * 1000); 370 | }); 371 | } else { 372 | setTimeout(updateData, 10 * 1000); 373 | } 374 | }, lookback); 375 | }); 376 | } 377 | 378 | fs.readFile('provider', { encoding: 'utf8' }, (err, data) => { 379 | const provider = data; 380 | const configName = process.argv.length > 2 ? process.argv[2] : undefined; 381 | API.init( 382 | () => { 383 | updateOrders(); 384 | updateData(); 385 | const port = process.env.PORT || 3000; 386 | http.listen(port, () => { 387 | console.log(`listening on port ${port}`); 388 | }); 389 | }, 390 | false, 391 | './etherdelta.github.io/', 392 | provider, configName, lookback); 393 | }); 394 | --------------------------------------------------------------------------------