commit

docs/ccxt/examples/js/load-all-symbols-at-once.js

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+
+
+import ccxt from '../../js/ccxt.js';
+import asTable from 'as-table';
+import ololog from 'ololog';
+import ansicolor from 'ansicolor';
+const log       = ololog.configure ({ locate: false })
+
+ansicolor.nice
+
+//-----------------------------------------------------------------------------
+
+process.on ('uncaughtException',  e => { log.bright.red.error (e); process.exit (1) })
+process.on ('unhandledRejection', e => { log.bright.red.error (e); process.exit (1) })
+
+//-----------------------------------------------------------------------------
+
+let test = async function (exchange) {
+
+    try {
+
+        await exchange.loadMarkets ()
+        log (exchange.id.green, 'loaded', exchange.symbols.length.toString ().bright.green, 'symbols')
+
+    } catch (e) {
+
+        if (e instanceof ccxt.DDoSProtection) {
+            log.bright.yellow (exchange.id, '[DDoS Protection] ' + e.message)
+        } else if (e instanceof ccxt.RequestTimeout) {
+            log.bright.yellow (exchange.id, '[Request Timeout] ' + e.message)
+        } else if (e instanceof ccxt.AuthenticationError) {
+            log.bright.yellow (exchange.id, '[Authentication Error] ' + e.message)
+        } else if (e instanceof ccxt.ExchangeNotAvailable) {
+            log.bright.yellow (exchange.id, '[Exchange Not Available] ' + e.message)
+        } else if (e instanceof ccxt.ExchangeError) {
+            log.bright.yellow (exchange.id, '[Exchange Error] ' + e.message)
+        } else if (e instanceof ccxt.NetworkError) {
+            log.bright.yellow (exchange.id, '[Network Error] ' + e.message)
+        } else {
+            throw e
+        }
+    }
+}
+
+//-----------------------------------------------------------------------------
+
+let exchanges = []
+
+async function main () {
+
+    // instantiate all exchanges
+    await Promise.all (ccxt.exchanges.map (async id => {
+        let exchange = new (ccxt)[id] ()
+        exchanges.push (exchange)
+        await test (exchange)
+    }))
+
+    let succeeded = exchanges.filter (exchange => exchange.markets ? true : false).length.toString ().bright.green
+    let failed = exchanges.filter (exchange => exchange.markets ? false : true).length
+    let total = ccxt.exchanges.length.toString ().bright.white
+    let numSymbols = 0;
+    exchanges.map (exchange => {
+        numSymbols += exchange.symbols ? exchange.symbols.length : 0;
+    })
+    log (numSymbols, 'symbols from', succeeded, 'of', total, 'exchanges loaded', ('(' + failed + ' errors)').red)
+
+}
+
+main ()