Get missing fields in transaction data for subgraph event handlers (#102)

* Get missing fields in event transaction

* Cache transaction data for event handlers in subgraph

packages/ipld-eth-client/src/eth-client.ts

@@ -92,6 +92,16 @@ export class EthClient {
     );
   }
 
+  async getFullTransaction ({ headerId, txHash }: { headerId: number, txHash: string }): Promise<any> {
+    return this._graphqlClient.query(
+      ethQueries.getFullTransaction,
+      {
+        headerId,
+        txHash
+      }
+    );
+  }
+
   async getBlockByHash (blockHash?: string): Promise<any> {
     const { block } = await this._graphqlClient.query(ethQueries.getBlockByHash, { blockHash });
     block.number = parseInt(block.number, 16);

packages/ipld-eth-client/src/eth-queries.ts

@@ -86,6 +86,7 @@ export const getFullBlocks = gql`
 query allEthHeaderCids($blockNumber: BigInt, $blockHash: String) {
   allEthHeaderCids(condition: { blockNumber: $blockNumber, blockHash: $blockHash }) {
     nodes {
+      id
       cid
       blockNumber
       blockHash
@@ -106,6 +107,21 @@ query allEthHeaderCids($blockNumber: BigInt, $blockHash: String) {
 }
 `;
 
+export const getFullTransaction = gql`
+query ethTransactionCidByHeaderIdAndTxHash($headerId: Int!, $txHash: String!) {
+  ethTransactionCidByHeaderIdAndTxHash(headerId: $headerId, txHash: $txHash) {
+    cid
+    txHash
+    index
+    src
+    dst
+    blockByMhKey {
+      data
+    }
+  }
+}
+`;
+
 export const getBlockByHash = gql`
 query block($blockHash: Bytes32) {
   block(hash: $blockHash) {
@@ -158,6 +174,7 @@ export default {
   getBlockWithTransactions,
   getBlocks,
   getFullBlocks,
+  getFullTransaction,
   getBlockByHash,
   subscribeBlocks,
   subscribeTransactions