From 00ec4132f89527a6e2ae6b1d3842c447cab38cef Mon Sep 17 00:00:00 2001
From: zsfelfoldi <zsfelfoldi@gmail.com>
Date: Wed, 20 May 2015 06:41:50 +0200
Subject: [PATCH] Storing tx receipts in extraDb

---
 core/block_processor.go | 16 ++++++++++++++++
 xeth/xeth.go            | 18 ++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/core/block_processor.go b/core/block_processor.go
index 20e6722a4f..3a224059b9 100644
--- a/core/block_processor.go
+++ b/core/block_processor.go
@@ -23,6 +23,8 @@ const (
 	BlockChainVersion = 2
 )
 
+var receiptsPre = []byte("receipts-")
+
 type BlockProcessor struct {
 	db      common.Database
 	extraDb common.Database
@@ -262,9 +264,23 @@ func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (logs st
 		putTx(sm.extraDb, tx, block, uint64(i))
 	}
 
+	receiptsRlp := block.Receipts().RlpEncode()
+	sm.extraDb.Put(append(receiptsPre, block.Hash().Bytes()...), receiptsRlp)
+
 	return state.Logs(), nil
 }
 
+func (self *BlockProcessor) GetBlockReceipts(bhash common.Hash) (receipts types.Receipts, err error) {
+	var rdata []byte
+	rdata, err = self.extraDb.Get(append(receiptsPre, bhash[:]...))
+
+	if err == nil {
+		err = rlp.DecodeBytes(rdata, &receipts)
+	}
+	return
+
+}
+
 // Validates the current block. Returns an error if the block was invalid,
 // an uncle or anything that isn't on the current block chain.
 // Validation validates easy over difficult (dagger takes longer time = difficult)
diff --git a/xeth/xeth.go b/xeth/xeth.go
index 7de3e31be4..3772146de6 100644
--- a/xeth/xeth.go
+++ b/xeth/xeth.go
@@ -350,6 +350,24 @@ func (self *XEth) CurrentBlock() *types.Block {
 	return self.backend.ChainManager().CurrentBlock()
 }
 
+func (self *XEth) GetBlockReceipts(bhash common.Hash) (receipts types.Receipts, err error) {
+	return self.backend.BlockProcessor().GetBlockReceipts(bhash)
+}
+
+func (self *XEth) GetTxReceipt(txhash common.Hash) (receipt *types.Receipt, err error) {
+	_, bhash, _, txi := self.EthTransactionByHash(common.ToHex(txhash[:]))
+	var receipts types.Receipts
+	receipts, err = self.backend.BlockProcessor().GetBlockReceipts(bhash)
+	if err == nil {
+		if txi < uint64(len(receipts)) {
+			receipt = receipts[txi]
+		} else {
+			err = fmt.Errorf("Invalid tx index")
+		}
+	}
+	return
+}
+
 func (self *XEth) GasLimit() *big.Int {
 	return self.backend.ChainManager().GasLimit()
 }