Implement JSON-RPC method: eth_getBlockReceipts (#1984)

* Implement JSON-RPC method: eth_getBlockReceipts

* Increment index in eth_getBlockReceipts

nimbus/rpc/p2p.nim

@@ -555,6 +555,27 @@ proc setupEthRpc*(
 
     getProof(accDB, address, slots)
 
+  server.rpc("eth_getBlockReceipts") do(quantityTag: BlockTag) -> Option[seq[ReceiptObject]]:
+    try:
+      let header = chainDB.headerFromTag(quantityTag)
+      var
+        prevGasUsed = GasInt(0)
+        recs: seq[ReceiptObject]
+        txs: seq[Transaction]
+        index = 0
+
+      for tx in chainDB.getBlockTransactions(header):
+        txs.add tx
+
+      for receipt in chainDB.getReceipts(header.receiptRoot):
+        let gasUsed = receipt.cumulativeGasUsed - prevGasUsed
+        prevGasUsed = receipt.cumulativeGasUsed
+        recs.add populateReceipt(receipt, gasUsed, txs[index], index, header)
+        inc index
+
+      return some(recs)
+    except CatchableError:
+      return none(seq[ReceiptObject])
 #[
   server.rpc("eth_newFilter") do(filterOptions: FilterOptions) -> int:
     ## Creates a filter object, based on filter options, to notify when the state changes (logs).

tests/test_rpc.nim

@@ -733,6 +733,15 @@ proc rpcMain*() =
           storageProof.len() == 1
           verifySlotProof(proofResponse.storageHash, storageProof[0]).isValid()
 
+      test "eth_getBlockReceipts":
+        let recs = await client.eth_getBlockReceipts(blockId("latest"))
+        check recs.isSome
+        if recs.isSome:
+          let receipts = recs.get
+          check receipts.len == 2
+          check receipts[0].transactionIndex == 0.Quantity
+          check receipts[1].transactionIndex == 1.Quantity
+
     rpcServer.stop()
     rpcServer.close()