diff options
Diffstat (limited to 'packages/pipeline/src/parsers/web3')
-rw-r--r-- | packages/pipeline/src/parsers/web3/index.ts | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/packages/pipeline/src/parsers/web3/index.ts b/packages/pipeline/src/parsers/web3/index.ts new file mode 100644 index 000000000..f986efc59 --- /dev/null +++ b/packages/pipeline/src/parsers/web3/index.ts @@ -0,0 +1,49 @@ +import { BigNumber } from '@0x/utils'; +import { BlockWithoutTransactionData, Transaction as EthTransaction } from 'ethereum-types'; + +import { Block, Transaction } from '../../entities'; + +const MILLISECONDS_PER_SECOND = 1000; + +/** + * Parses a raw block and returns a Block entity. + * @param rawBlock a raw block (e.g. returned from web3-wrapper). + */ +export function parseBlock(rawBlock: BlockWithoutTransactionData): Block { + if (rawBlock.hash == null) { + throw new Error('Tried to parse raw block but hash was null'); + } + if (rawBlock.number == null) { + throw new Error('Tried to parse raw block but number was null'); + } + + const block = new Block(); + block.hash = rawBlock.hash; + block.number = rawBlock.number; + // Block timestamps are in seconds, but we use milliseconds everywhere else. + block.timestamp = rawBlock.timestamp * MILLISECONDS_PER_SECOND; + return block; +} + +/** + * Parses a raw transaction and returns a Transaction entity. + * @param rawBlock a raw transaction (e.g. returned from web3-wrapper). + */ +export function parseTransaction(rawTransaction: EthTransaction): Transaction { + if (rawTransaction.blockHash == null) { + throw new Error('Tried to parse raw transaction but blockHash was null'); + } + if (rawTransaction.blockNumber == null) { + throw new Error('Tried to parse raw transaction but blockNumber was null'); + } + + const tx = new Transaction(); + tx.transactionHash = rawTransaction.hash; + tx.blockHash = rawTransaction.blockHash; + tx.blockNumber = rawTransaction.blockNumber; + + tx.gasUsed = new BigNumber(rawTransaction.gas); + tx.gasPrice = rawTransaction.gasPrice; + + return tx; +} |