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;
+}