Implement support for getting and parsing blocks and transactions

1 files changed, 68 insertions, 0 deletions

diff --git a/packages/pipeline/src/index.ts b/packages/pipeline/src/index.ts
new file mode 100644
index 000000000..ad0e4c68f
--- /dev/null
+++ b/packages/pipeline/src/index.ts
@@ -0,0 +1,68 @@
+import { web3Factory } from '@0x/dev-utils';
+import { Web3ProviderEngine } from '@0x/subproviders';
+import 'reflect-metadata';
+import { Connection, createConnection } from 'typeorm';
+
+import { ExchangeEventsSource } from './data_sources/contract-wrappers/exchange_events';
+import { Web3Source } from './data_sources/web3';
+import { Block } from './entities/Block';
+import { ExchangeFillEvent } from './entities/ExchangeFillEvent';
+import { Transaction } from './entities/Transaction';
+import { testConfig } from './ormconfig';
+import { parseExchangeEvents } from './parsers/events';
+import { parseBlock, parseTransaction } from './parsers/web3';
+
+const EXCHANGE_START_BLOCK = 6271590; // Block number when the Exchange contract was deployed to mainnet.
+
+let connection: Connection;
+
+(async () => {
+    connection = await createConnection(testConfig);
+    const provider = web3Factory.getRpcProvider({
+        rpcUrl: 'https://mainnet.infura.io',
+    });
+    await getExchangeEventsAsync(provider);
+    await getBlockAsync(provider);
+    await getTransactionAsync(provider);
+    console.log('Exiting process');
+    process.exit(0);
+})();
+
+async function getExchangeEventsAsync(provider: Web3ProviderEngine): Promise<void> {
+    console.log('Getting event logs...');
+    const eventsRepository = connection.getRepository(ExchangeFillEvent);
+    const exchangeEvents = new ExchangeEventsSource(provider, 1);
+    const eventLogs = await exchangeEvents.getFillEventsAsync(EXCHANGE_START_BLOCK, EXCHANGE_START_BLOCK + 100000);
+    console.log('Parsing events...');
+    const events = parseExchangeEvents(eventLogs);
+    console.log(`Retrieved and parsed ${events.length} total events.`);
+    console.log('Saving events...');
+    for (const event of events) {
+        await eventsRepository.save(event);
+    }
+    console.log('Saved events.');
+}
+
+async function getBlockAsync(provider: Web3ProviderEngine): Promise<void> {
+    console.log('Getting block info...');
+    const blocksRepository = connection.getRepository(Block);
+    const web3Source = new Web3Source(provider);
+    const rawBlock = await web3Source.getBlockInfoAsync(EXCHANGE_START_BLOCK);
+    const block = parseBlock(rawBlock);
+    console.log('Saving block info...');
+    await blocksRepository.save(block);
+    console.log('Done saving block.');
+}
+
+async function getTransactionAsync(provider: Web3ProviderEngine): Promise<void> {
+    console.log('Getting tx info...');
+    const txsRepository = connection.getRepository(Transaction);
+    const web3Source = new Web3Source(provider);
+    const rawTx = await web3Source.getTransactionInfoAsync(
+        '0x6dd106d002873746072fc5e496dd0fb2541b68c77bcf9184ae19a42fd33657fe',
+    );
+    const tx = parseTransaction(rawTx);
+    console.log('Saving tx info...');
+    await txsRepository.save(tx);
+    console.log('Done saving tx.');
+}