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authorAlex Browne <stephenalexbrowne@gmail.com>2018-12-18 03:36:03 +0800
committerGitHub <noreply@github.com>2018-12-18 03:36:03 +0800
commit28713bdb3859e24b78e784722813b03e95788e1f (patch)
tree0d008b539ad4e94ac9157c13b0508904def9f4c8
parent737d1dc54d72872e24abce5a1dbe1b66d35fa21a (diff)
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Pull approval events for ZRX and DAI (#1430)
-rw-r--r--packages/pipeline/src/scripts/pull_erc20_events.ts68
1 files changed, 49 insertions, 19 deletions
diff --git a/packages/pipeline/src/scripts/pull_erc20_events.ts b/packages/pipeline/src/scripts/pull_erc20_events.ts
index 0ad12c97a..bd520c610 100644
--- a/packages/pipeline/src/scripts/pull_erc20_events.ts
+++ b/packages/pipeline/src/scripts/pull_erc20_events.ts
@@ -1,10 +1,10 @@
-// tslint:disable:no-console
import { getContractAddressesForNetworkOrThrow } from '@0x/contract-addresses';
import { web3Factory } from '@0x/dev-utils';
import { Web3ProviderEngine } from '@0x/subproviders';
+import { logUtils } from '@0x/utils';
import { Web3Wrapper } from '@0x/web3-wrapper';
import 'reflect-metadata';
-import { Connection, ConnectionOptions, createConnection, Repository } from 'typeorm';
+import { Connection, ConnectionOptions, createConnection } from 'typeorm';
import { ERC20EventsSource } from '../data_sources/contract-wrappers/erc20_events';
import { ERC20ApprovalEvent } from '../entities';
@@ -16,33 +16,63 @@ const NETWORK_ID = 1;
const START_BLOCK_OFFSET = 100; // Number of blocks before the last known block to consider when updating fill events.
const BATCH_SAVE_SIZE = 1000; // Number of events to save at once.
const BLOCK_FINALITY_THRESHOLD = 10; // When to consider blocks as final. Used to compute default endBlock.
-const WETH_START_BLOCK = 4719568; // Block number when the WETH contract was deployed.
let connection: Connection;
+interface Token {
+ // name is used for logging only.
+ name: string;
+ address: string;
+ defaultStartBlock: number;
+}
+
+const tokensToGetApprovalEvents: Token[] = [
+ {
+ name: 'WETH',
+ address: getContractAddressesForNetworkOrThrow(NETWORK_ID).etherToken,
+ defaultStartBlock: 4719568, // Block when the WETH contract was deployed.
+ },
+ {
+ name: 'ZRX',
+ address: getContractAddressesForNetworkOrThrow(NETWORK_ID).zrxToken,
+ defaultStartBlock: 4145415, // Block when the ZRX contract was deployed.
+ },
+ {
+ name: 'DAI',
+ address: '0x89d24a6b4ccb1b6faa2625fe562bdd9a23260359',
+ defaultStartBlock: 4752008, // Block when the DAI contract was deployed.
+ },
+];
+
(async () => {
connection = await createConnection(ormConfig as ConnectionOptions);
const provider = web3Factory.getRpcProvider({
rpcUrl: INFURA_ROOT_URL,
});
const endBlock = await calculateEndBlockAsync(provider);
- await getAndSaveWETHApprovalEventsAsync(provider, endBlock);
+ for (const token of tokensToGetApprovalEvents) {
+ await getAndSaveApprovalEventsAsync(provider, token, endBlock);
+ }
process.exit(0);
})().catch(handleError);
-async function getAndSaveWETHApprovalEventsAsync(provider: Web3ProviderEngine, endBlock: number): Promise<void> {
- console.log('Checking existing approval events...');
+async function getAndSaveApprovalEventsAsync(
+ provider: Web3ProviderEngine,
+ token: Token,
+ endBlock: number,
+): Promise<void> {
+ logUtils.log(`Getting approval events for ${token.name}...`);
+ logUtils.log('Checking existing approval events...');
const repository = connection.getRepository(ERC20ApprovalEvent);
- const startBlock = (await getStartBlockAsync(repository)) || WETH_START_BLOCK;
+ const startBlock = (await getStartBlockAsync(token)) || token.defaultStartBlock;
- console.log(`Getting WETH approval events starting at ${startBlock}...`);
- const wethTokenAddress = getContractAddressesForNetworkOrThrow(NETWORK_ID).etherToken;
- const eventsSource = new ERC20EventsSource(provider, NETWORK_ID, wethTokenAddress);
+ logUtils.log(`Getting approval events starting at ${startBlock}...`);
+ const eventsSource = new ERC20EventsSource(provider, NETWORK_ID, token.address);
const eventLogs = await eventsSource.getApprovalEventsAsync(startBlock, endBlock);
- console.log(`Parsing ${eventLogs.length} WETH approval events...`);
+ logUtils.log(`Parsing ${eventLogs.length} approval events...`);
const events = parseERC20ApprovalEvents(eventLogs);
- console.log(`Retrieved and parsed ${events.length} total WETH approval events.`);
+ logUtils.log(`Retrieved and parsed ${events.length} total approval events.`);
await repository.save(events, { chunk: Math.ceil(events.length / BATCH_SAVE_SIZE) });
}
@@ -52,15 +82,15 @@ async function calculateEndBlockAsync(provider: Web3ProviderEngine): Promise<num
return currentBlock - BLOCK_FINALITY_THRESHOLD;
}
-async function getStartBlockAsync(repository: Repository<ERC20ApprovalEvent>): Promise<number | null> {
- const fillEventCount = await repository.count();
- if (fillEventCount === 0) {
- console.log(`No existing approval events found.`);
- return null;
- }
+async function getStartBlockAsync(token: Token): Promise<number | null> {
const queryResult = await connection.query(
- `SELECT block_number FROM raw.erc20_approval_events ORDER BY block_number DESC LIMIT 1`,
+ `SELECT block_number FROM raw.erc20_approval_events WHERE token_address = $1 ORDER BY block_number DESC LIMIT 1`,
+ [token.address],
);
+ if (queryResult.length === 0) {
+ logUtils.log(`No existing approval events found for ${token.name}.`);
+ return null;
+ }
const lastKnownBlock = queryResult[0].block_number;
return lastKnownBlock - START_BLOCK_OFFSET;
}