From fdb82d87f122bd3336a8926ed0bb7a509a130f29 Mon Sep 17 00:00:00 2001
From: Thomas Jay Rush <jrush@quickblocks.io>
Date: Fri, 11 Sep 2020 15:20:00 -0400
Subject: [PATCH] 1070 eth get code (#1100)
* Fixing issue #1070 Add eth_getCode
* Adding eth_getCode to README
---
README.md | 1 +
cmd/rpcdaemon/commands/eth_api.go | 26 ++++++++++++++++++++++++++
2 files changed, 27 insertions(+)
diff --git a/README.md b/README.md
index b052a031ac..83bf73dce2 100644
--- a/README.md
+++ b/README.md
@@ -137,6 +137,7 @@ eth_getBlockByHash
eth_getBlockTransactionCountByHash
eth_getBlockTransactionCountByNumber
eth_getBalance
+eth_getCode
eth_getLogs
eth_getStorageAt
eth_getTransactionReceipt
diff --git a/cmd/rpcdaemon/commands/eth_api.go b/cmd/rpcdaemon/commands/eth_api.go
index 0c7d97cc16..bf969ac146 100644
--- a/cmd/rpcdaemon/commands/eth_api.go
+++ b/cmd/rpcdaemon/commands/eth_api.go
@@ -39,6 +39,7 @@ type EthAPI interface {
GetTransactionByBlockHashAndIndex(ctx context.Context, blockHash common.Hash, txIndex hexutil.Uint64) (*RPCTransaction, error)
GetTransactionByBlockNumberAndIndex(ctx context.Context, blockNr rpc.BlockNumber, txIndex hexutil.Uint) (*RPCTransaction, error)
GetStorageAt(ctx context.Context, address common.Address, index string, blockNrOrHash rpc.BlockNumberOrHash) (string, error)
+ GetCode(ctx context.Context, address common.Address, blockNrOrHash rpc.BlockNumberOrHash) (hexutil.Bytes, error)
}
// APIImpl is implementation of the EthAPI interface based on remote Db access
@@ -235,3 +236,28 @@ func (api *APIImpl) GetStorageAt(ctx context.Context, address common.Address, in
return hexutil.Encode(res), nil
}
+
+// GetCode returns the code stored at the given address in the state for the given block number.
+func (api *APIImpl) GetCode(ctx context.Context, address common.Address, blockNrOrHash rpc.BlockNumberOrHash) (hexutil.Bytes, error) {
+ blockNumber, _, err := rpchelper.GetBlockNumber(blockNrOrHash, api.dbReader)
+ if err != nil {
+ return nil, err
+ }
+
+ reader := adapter.NewStateReader(api.db, blockNumber)
+ acc, err := reader.ReadAccountData(address)
+ if err != nil {
+ return nil, err
+ }
+
+ if acc == nil {
+ return nil, fmt.Errorf("account %s not found", address)
+ }
+
+ res, err := reader.ReadAccountCode(address, acc.CodeHash)
+ if err != nil {
+ return nil, err
+ }
+
+ return res, nil
+}
--
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