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| 1 | +import express, { json, urlencoded } from 'express' |
| 2 | +import cors from 'cors' |
| 3 | +import { join } from 'path' |
| 4 | +import { Server } from 'ws' |
| 5 | +import swaggerUi from 'swagger-ui-express' |
| 6 | +import { |
| 7 | + evm, |
| 8 | + middleware, |
| 9 | + ConnectionHandler, |
| 10 | + Registry, |
| 11 | + BlockHandler, |
| 12 | + TransactionHandler, |
| 13 | + Prometheus, |
| 14 | +} from '@shapeshiftoss/common-api' |
| 15 | +import { Tx as BlockbookTx, WebsocketClient, getAddresses, NewBlock } from '@shapeshiftoss/blockbook' |
| 16 | +import { Logger } from '@shapeshiftoss/logger' |
| 17 | +import { gasOracle, service } from './controller' |
| 18 | +import { RegisterRoutes } from './routes' |
| 19 | + |
| 20 | +const PORT = process.env.PORT ?? 3000 |
| 21 | +const INDEXER_WS_URL = process.env.INDEXER_WS_URL |
| 22 | + |
| 23 | +if (!INDEXER_WS_URL) throw new Error('INDEXER_WS_URL env var not set') |
| 24 | + |
| 25 | +export const logger = new Logger({ |
| 26 | + namespace: ['unchained', 'coinstacks', 'arbitrum-nova', 'api'], |
| 27 | + level: process.env.LOG_LEVEL, |
| 28 | +}) |
| 29 | + |
| 30 | +const prometheus = new Prometheus({ coinstack: 'arbitrum-nova' }) |
| 31 | + |
| 32 | +const app = express() |
| 33 | + |
| 34 | +app.use(json(), urlencoded({ extended: true }), cors(), middleware.requestLogger, middleware.metrics(prometheus)) |
| 35 | + |
| 36 | +app.get('/health', async (_, res) => |
| 37 | + res.json({ status: 'up', asset: 'arbitrum-nova', connections: wsServer.clients.size }) |
| 38 | +) |
| 39 | + |
| 40 | +app.get('/metrics', async (_, res) => { |
| 41 | + res.setHeader('Content-Type', prometheus.register.contentType) |
| 42 | + res.send(await prometheus.register.metrics()) |
| 43 | +}) |
| 44 | + |
| 45 | +const options: swaggerUi.SwaggerUiOptions = { |
| 46 | + customCss: '.swagger-ui .topbar { display: none }', |
| 47 | + customSiteTitle: 'ShapeShift Arbitrum Nova API Docs', |
| 48 | + customfavIcon: '/public/favi-blue.png', |
| 49 | + swaggerUrl: '/swagger.json', |
| 50 | +} |
| 51 | + |
| 52 | +app.use('/public', express.static(join(__dirname, '../../../../../../common/api/public'))) |
| 53 | +app.use('/swagger.json', express.static(join(__dirname, './swagger.json'))) |
| 54 | +app.use('/docs', swaggerUi.serve, swaggerUi.setup(undefined, options)) |
| 55 | + |
| 56 | +RegisterRoutes(app) |
| 57 | + |
| 58 | +// redirect any unmatched routes to docs |
| 59 | +app.get('/', async (_, res) => { |
| 60 | + res.redirect('/docs') |
| 61 | +}) |
| 62 | + |
| 63 | +app.use(middleware.errorHandler, middleware.notFoundHandler) |
| 64 | + |
| 65 | +const blockHandler: BlockHandler<NewBlock, Array<BlockbookTx>> = async (block) => { |
| 66 | + const txs = await service.handleBlock(block.hash) |
| 67 | + return { txs } |
| 68 | +} |
| 69 | + |
| 70 | +const transactionHandler: TransactionHandler<BlockbookTx, evm.Tx> = async (blockbookTx) => { |
| 71 | + const tx = await service.handleTransactionWithInternalTrace(blockbookTx) |
| 72 | + const internalAddresses = (tx.internalTxs ?? []).reduce<Array<string>>((prev, tx) => [...prev, tx.to, tx.from], []) |
| 73 | + const addresses = [...new Set([...getAddresses(blockbookTx), ...internalAddresses])] |
| 74 | + |
| 75 | + return { addresses, tx } |
| 76 | +} |
| 77 | + |
| 78 | +const registry = new Registry({ addressFormatter: evm.formatAddress, blockHandler, transactionHandler }) |
| 79 | + |
| 80 | +const server = app.listen(PORT, () => logger.info('Server started')) |
| 81 | +const wsServer = new Server({ server }) |
| 82 | + |
| 83 | +wsServer.on('connection', (connection) => { |
| 84 | + ConnectionHandler.start(connection, registry, prometheus) |
| 85 | +}) |
| 86 | + |
| 87 | +new WebsocketClient(INDEXER_WS_URL, { |
| 88 | + blockHandler: [registry.onBlock.bind(registry), gasOracle.onBlock.bind(gasOracle)], |
| 89 | + transactionHandler: registry.onTransaction.bind(registry), |
| 90 | +}) |
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