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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x | import { BlockfrostWorker, BlockfrostWorkerConfig, getPool } from '../services';
import { CommonProgramOptions, PosgresProgramOptions, PostgresOptionDescriptions } from '../options';
import { Logger } from 'ts-log';
import { MissingProgramOption } from '../errors/MissingProgramOption';
import { SrvRecord } from 'dns';
import { createDnsResolver } from '../utils';
import { createLogger } from 'bunyan';
import { readFile } from 'fs/promises';
export const BLOCKFROST_WORKER_API_URL_DEFAULT = new URL('http://localhost:3000');
export const CACHE_TTL_DEFAULT = 4 * 60; // Four hours
export const CREATE_SCHEMA_DEFAULT = false;
export const DROP_SCHEMA_DEFAULT = false;
export const DRY_RUN_DEFAULT = false;
export const SCAN_INTERVAL_DEFAULT = 60; // One hour
export const availableNetworks = ['mainnet', 'preprod', 'preview', 'sanchonet'] as const;
export type AvailableNetworks = typeof availableNetworks[number];
export enum BlockfrostWorkerOptionDescriptions {
BlockfrostApiFile = 'Blockfrost API Key file path',
BlockfrostApiKey = 'Blockfrost API Key',
CacheTTL = 'TTL of blockfrost cached metrics in minutes',
CreateSchema = 'create the schema; useful for development',
DropSchema = 'drop the schema; useful for development',
DryRun = 'dry run; useful for tests',
Network = 'network to run against',
ScanInterval = 'interval between a scan and the next one in minutes'
}
export type BlockfrostWorkerArgs = CommonProgramOptions &
PosgresProgramOptions<'DbSync'> &
BlockfrostWorkerConfig & { blockfrostApiFile?: string };
export interface LoadBlockfrostWorkerDependencies {
dnsResolver?: (serviceName: string) => Promise<SrvRecord>;
logger?: Logger;
}
const blockfrostWorker = 'Blockfrost worker';
export const loadBlockfrostWorker = async (args: BlockfrostWorkerArgs, deps: LoadBlockfrostWorkerDependencies = {}) => {
const logger = deps?.logger || createLogger({ level: args.loggerMinSeverity, name: 'blockfrost-worker' });
const dnsResolver =
deps?.dnsResolver ||
createDnsResolver(
{
factor: args.serviceDiscoveryBackoffFactor,
maxRetryTime: args.serviceDiscoveryTimeout
},
logger
);
const db = await getPool(dnsResolver, logger, args);
Iif (args.blockfrostApiFile)
try {
args.blockfrostApiKey = (await readFile(args.blockfrostApiFile)).toString('utf-8').replace(/[\n\r]/g, '');
} catch (error) {
logger.error(error);
throw error;
}
Iif (!args.blockfrostApiKey)
throw new MissingProgramOption(blockfrostWorker, [
BlockfrostWorkerOptionDescriptions.BlockfrostApiFile,
BlockfrostWorkerOptionDescriptions.BlockfrostApiKey
]);
Iif (!db)
throw new MissingProgramOption(blockfrostWorker, [
PostgresOptionDescriptions.ConnectionString,
PostgresOptionDescriptions.ServiceDiscoveryArgs
]);
return new BlockfrostWorker(args, { db, logger });
};
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