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Diffstat (limited to 'ethchain/block_chain.go')
-rw-r--r--ethchain/block_chain.go155
1 files changed, 0 insertions, 155 deletions
diff --git a/ethchain/block_chain.go b/ethchain/block_chain.go
index 3445bbb87..3b2914a37 100644
--- a/ethchain/block_chain.go
+++ b/ethchain/block_chain.go
@@ -2,12 +2,10 @@ package ethchain
import (
"bytes"
- "math"
"math/big"
"github.com/ethereum/eth-go/ethlog"
"github.com/ethereum/eth-go/ethutil"
- "github.com/ethereum/eth-go/ethwire"
)
var chainlogger = ethlog.NewLogger("CHAIN")
@@ -110,99 +108,6 @@ func (bc *BlockChain) CalculateBlockTD(block *Block) *big.Int {
return blockDiff
}
-func (bc *BlockChain) FindCanonicalChainFromMsg(msg *ethwire.Msg, commonBlockHash []byte) bool {
- var blocks []*Block
- for i := 0; i < (msg.Data.Len() - 1); i++ {
- block := NewBlockFromRlpValue(msg.Data.Get(i))
- blocks = append(blocks, block)
- }
- return bc.FindCanonicalChain(blocks, commonBlockHash)
-}
-
-// Is tasked by finding the CanonicalChain and resetting the chain if we are not the Conical one
-// Return true if we are the using the canonical chain false if not
-func (bc *BlockChain) FindCanonicalChain(blocks []*Block, commonBlockHash []byte) bool {
- // 1. Calculate TD of the current chain
- // 2. Calculate TD of the new chain
- // Reset state to the correct one
-
- chainDifficulty := new(big.Int)
-
- // Calculate the entire chain until the block we both have
- // Start with the newest block we got, all the way back to the common block we both know
- for _, block := range blocks {
- if bytes.Compare(block.Hash(), commonBlockHash) == 0 {
- chainlogger.Infoln("We have found the common parent block, breaking")
- break
- }
- chainDifficulty.Add(chainDifficulty, bc.CalculateBlockTD(block))
- }
-
- chainlogger.Infoln("Incoming chain difficulty:", chainDifficulty)
-
- curChainDifficulty := new(big.Int)
- block := bc.CurrentBlock
- for i := 0; block != nil; block = bc.GetBlock(block.PrevHash) {
- i++
- if bytes.Compare(block.Hash(), commonBlockHash) == 0 {
- chainlogger.Infoln("Found the common parent block")
- break
- }
- anOtherBlock := bc.GetBlock(block.PrevHash)
- if anOtherBlock == nil {
- // We do not want to count the genesis block for difficulty since that's not being sent
- chainlogger.Infoln("Found genesis block. Stop")
- break
- }
- curChainDifficulty.Add(curChainDifficulty, bc.CalculateBlockTD(block))
- }
-
- chainlogger.Infoln("Current chain difficulty:", curChainDifficulty)
- if chainDifficulty.Cmp(curChainDifficulty) == 1 {
- chainlogger.Infof("Resetting to block %x. Changing chain.")
- bc.ResetTillBlockHash(commonBlockHash)
- return false
- } else {
- chainlogger.Infoln("Current chain is longest chain. Ignoring incoming chain.")
- return true
- }
-}
-func (bc *BlockChain) ResetTillBlockHash(hash []byte) error {
- lastBlock := bc.CurrentBlock
- var returnTo *Block
- // Reset to Genesis if that's all the origin there is.
- if bytes.Compare(hash, bc.genesisBlock.Hash()) == 0 {
- returnTo = bc.genesisBlock
- bc.CurrentBlock = bc.genesisBlock
- bc.LastBlockHash = bc.genesisBlock.Hash()
- bc.LastBlockNumber = 1
- } else {
- returnTo = bc.GetBlock(hash)
- bc.CurrentBlock = returnTo
- bc.LastBlockHash = returnTo.Hash()
- bc.LastBlockNumber = returnTo.Number.Uint64()
- }
-
- // Manually reset the last sync block
- err := ethutil.Config.Db.Delete(lastBlock.Hash())
- if err != nil {
- return err
- }
-
- var block *Block
- for ; block != nil; block = bc.GetBlock(block.PrevHash) {
- if bytes.Compare(block.Hash(), hash) == 0 {
- chainlogger.Infoln("We have arrived at the the common parent block, breaking")
- break
- }
- err = ethutil.Config.Db.Delete(block.Hash())
- if err != nil {
- return err
- }
- }
- chainlogger.Infoln("Split chain deleted and reverted to common parent block.")
- return nil
-}
func (bc *BlockChain) GenesisBlock() *Block {
return bc.genesisBlock
@@ -228,66 +133,6 @@ func (self *BlockChain) GetChainHashesFromHash(hash []byte, max uint64) (chain [
return
}
-// Get chain return blocks from hash up to max in RLP format
-func (bc *BlockChain) GetChainFromHash(hash []byte, max uint64) []interface{} {
- var chain []interface{}
- // Get the current hash to start with
- currentHash := bc.CurrentBlock.Hash()
- // Get the last number on the block chain
- lastNumber := bc.CurrentBlock.Number.Uint64()
- // Get the parents number
- parentNumber := bc.GetBlock(hash).Number.Uint64()
- // Get the min amount. We might not have max amount of blocks
- count := uint64(math.Min(float64(lastNumber-parentNumber), float64(max)))
- startNumber := parentNumber + count
-
- num := lastNumber
- for num > startNumber {
- num--
-
- block := bc.GetBlock(currentHash)
- if block == nil {
- break
- }
- currentHash = block.PrevHash
- }
-
- for i := uint64(0); bytes.Compare(currentHash, hash) != 0 && num >= parentNumber && i < count; i++ {
- // Get the block of the chain
- block := bc.GetBlock(currentHash)
- if block == nil {
- chainlogger.Debugf("Unexpected error during GetChainFromHash: Unable to find %x\n", currentHash)
- break
- }
-
- currentHash = block.PrevHash
-
- chain = append(chain, block.Value().Val)
-
- num--
- }
-
- return chain
-}
-
-func (bc *BlockChain) GetChain(hash []byte, amount int) []*Block {
- genHash := bc.genesisBlock.Hash()
-
- block := bc.GetBlock(hash)
- var blocks []*Block
-
- for i := 0; i < amount && block != nil; block = bc.GetBlock(block.PrevHash) {
- blocks = append([]*Block{block}, blocks...)
-
- if bytes.Compare(genHash, block.Hash()) == 0 {
- break
- }
- i++
- }
-
- return blocks
-}
-
func AddTestNetFunds(block *Block) {
for _, addr := range []string{
"51ba59315b3a95761d0863b05ccc7a7f54703d99",