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Diffstat (limited to 'packages/pipeline/src/events.ts')
-rw-r--r-- | packages/pipeline/src/events.ts | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/packages/pipeline/src/events.ts b/packages/pipeline/src/events.ts deleted file mode 100644 index a6e1e4ad3..000000000 --- a/packages/pipeline/src/events.ts +++ /dev/null @@ -1,75 +0,0 @@ -import { AbiDecoder } from '@0xproject/utils'; -import { default as axios } from 'axios'; -import { BlockParam, BlockParamLiteral, DecodedLogArgs, LogEntry, LogWithDecodedArgs } from 'ethereum-types'; -import * as R from 'ramda'; - -import { artifacts } from './artifacts'; - -// const EXCHANGE_ADDRESS = '0x4f833a24e1f95d70f028921e27040ca56e09ab0b'; -const ETHERSCAN_URL = 'https://api.etherscan.io/api'; -// TOOD(albrow): Pass this in as a constructor argument instead of an env var. -const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY; - -// Raw response from etherescan.io -interface EventsResponse { - status: string; - message: string; - result: EventsResponseResult[]; -} - -// Events as represented in the response from etherscan.io -interface EventsResponseResult { - address: string; - topics: string[]; - data: string; - blockNumber: string; - timeStamp: string; - gasPrice: string; - gasUsed: string; - logIndex: string; - transactionHash: string; - transactionIndex: string; -} - -// Parses and abi-decodes the fill events response from etherscan.io. -const parseFillEventsResponse = R.pipe(R.map(convertResponseToLogEntry), R.map(tryToDecodeLogOrNoop)); - -function convertResponseToLogEntry(result: EventsResponseResult): LogEntry { - const radix = 10; - return { - logIndex: parseInt(result.logIndex, radix), - transactionIndex: parseInt(result.logIndex, radix), - transactionHash: result.transactionHash, - blockHash: '', - blockNumber: parseInt(result.blockNumber, radix), - address: result.address, - data: result.data, - topics: result.topics, - }; -} - -function tryToDecodeLogOrNoop(log: LogEntry): LogWithDecodedArgs<DecodedLogArgs> { - const abiDecoder = new AbiDecoder([artifacts.Exchange.compilerOutput.abi]); - const logWithDecodedArgs = abiDecoder.tryToDecodeLogOrNoop(log); - // tslint:disable-next-line:no-unnecessary-type-assertion - return logWithDecodedArgs as LogWithDecodedArgs<DecodedLogArgs>; -} - -/** - * Gets the decoded events for a specific contract and block range. - * @param contractAddress The address of the contract to get the events for. - * @param fromBlock The start of the block range to get events for (inclusive). - * @param toBlock The end of the block range to get events for (inclusive). - * @returns A list of decoded events. - */ -export async function getContractEventsAsync( - contractAddress: string, - fromBlock: BlockParam = BlockParamLiteral.Earliest, - toBlock: BlockParam = BlockParamLiteral.Latest, -): Promise<Array<LogWithDecodedArgs<DecodedLogArgs>>> { - const fullURL = `${ETHERSCAN_URL}?module=logs&action=getLogs&address=${contractAddress}&fromBlock=${fromBlock}&toBlock=${toBlock}&apikey=${ETHERSCAN_API_KEY}`; - const resp = await axios.get<EventsResponse>(fullURL); - // TODO(albrow): Check response code. - const decodedEvents = parseFillEventsResponse(resp.data.result); - return decodedEvents; -} |