1 files changed, 63 insertions, 0 deletions
diff --git a/packages/pipeline/src/scripts/pull_idex_orderbook_snapshots.ts b/packages/pipeline/src/scripts/pull_idex_orderbook_snapshots.ts
new file mode 100644
index 000000000..d47c1dd3f
--- /dev/null
+++ b/packages/pipeline/src/scripts/pull_idex_orderbook_snapshots.ts
@@ -0,0 +1,63 @@
+import { logUtils } from '@0x/utils';
+import * as R from 'ramda';
+import { Connection, ConnectionOptions, createConnection } from 'typeorm';
+
+import { IDEX_SOURCE, IdexSource } from '../data_sources/idex';
+import { TokenOrderbookSnapshot as TokenOrder } from '../entities';
+import * as ormConfig from '../ormconfig';
+import { parseIdexOrders } from '../parsers/idex_orders';
+import { handleError } from '../utils';
+
+// Number of orders to save at once.
+const BATCH_SAVE_SIZE = 1000;
+
+// Number of markets to retrieve orderbooks for at once.
+const MARKET_ORDERBOOK_REQUEST_BATCH_SIZE = 100;
+
+// Delay between market orderbook requests.
+const MILLISEC_MARKET_ORDERBOOK_REQUEST_DELAY = 2000;
+
+let connection: Connection;
+
+(async () => {
+    connection = await createConnection(ormConfig as ConnectionOptions);
+    const idexSource = new IdexSource();
+    logUtils.log('Getting all IDEX markets');
+    const markets = await idexSource.getMarketsAsync();
+    logUtils.log(`Got ${markets.length} markets.`);
+    for (const marketsChunk of R.splitEvery(MARKET_ORDERBOOK_REQUEST_BATCH_SIZE, markets)) {
+        await Promise.all(
+            marketsChunk.map(async (marketId: string) => getAndSaveMarketOrderbook(idexSource, marketId)),
+        );
+        await new Promise<void>(resolve => setTimeout(resolve, MILLISEC_MARKET_ORDERBOOK_REQUEST_DELAY));
+    }
+    process.exit(0);
+})().catch(handleError);
+
+/**
+ * Retrieve orderbook from Idex API for a given market. Parse orders and insert
+ * them into our database.
+ * @param idexSource Data source which can query Idex API.
+ * @param marketId String representing market of interest, eg. 'ETH_TIC'.
+ */
+async function getAndSaveMarketOrderbook(idexSource: IdexSource, marketId: string): Promise<void> {
+    logUtils.log(`${marketId}: Retrieving orderbook.`);
+    const orderBook = await idexSource.getMarketOrderbookAsync(marketId);
+    const observedTimestamp = Date.now();
+
+    if (!R.has('bids', orderBook) || !R.has('asks', orderBook)) {
+        logUtils.warn(`${marketId}: Orderbook faulty.`);
+        return;
+    }
+
+    logUtils.log(`${marketId}: Parsing orders.`);
+    const orders = parseIdexOrders(orderBook, observedTimestamp, IDEX_SOURCE);
+
+    if (orders.length > 0) {
+        logUtils.log(`${marketId}: Saving ${orders.length} orders.`);
+        const TokenOrderRepository = connection.getRepository(TokenOrder);
+        await TokenOrderRepository.save(orders, { chunk: Math.ceil(orders.length / BATCH_SAVE_SIZE) });
+    } else {
+        logUtils.log(`${marketId}: 0 orders to save.`);
+    }
+}