func createGenesisSignature(master wallet.WalletEntry) coin.Sig {
c := visor.NewVisorConfig()
bc := coin.NewBlockchain()
gb := bc.CreateGenesisBlock(master.Address, c.GenesisTimestamp,
c.GenesisCoinVolume)
return coin.SignHash(gb.HashHeader(), master.Secret)
}
// Loads a blockchain but subdues errors into the logger, or panics.
// If no blockchain is found, it creates a new empty one
func loadBlockchain(filename string, genAddr coin.Address) *coin.Blockchain {
bc := &coin.Blockchain{}
created := false
if filename != "" {
var err error
bc, err = LoadBlockchain(filename)
if err == nil {
if len(bc.Blocks) == 0 {
log.Panic("Loaded empty blockchain")
}
loadedGenAddr := bc.Blocks[0].Body.Transactions[0].Out[0].Address
if loadedGenAddr != genAddr {
log.Panic("Configured genesis address does not match the " +
"address in the blockchain")
}
created = true
} else {
if os.IsNotExist(err) {
logger.Info("No blockchain file, will create a new blockchain")
} else {
log.Panicf("Failed to load blockchain file \"%s\": %v",
filename, err)
}
}
}
if !created {
bc = coin.NewBlockchain()
}
return bc
}
// Returns a Visor with minimum initialization necessary for empty blockchain
// access
func NewMinimalVisor(c VisorConfig) *Visor {
return &Visor{
Config: c,
Blockchain: coin.NewBlockchain(),
blockSigs: NewBlockSigs(),
Unconfirmed: NewUnconfirmedTxnPool(),
//Wallets: nil,
}
}
//Skycoin transactions are smaller than Bitcoin transactions so skycoin has
//a higher transactions per second for the same block size
func NewBlockchain() Blockchain {
//set pubkey based upon testnet, mainnet and local
bc := Blockchain{
IsMaster: false, //writes blocks
TestNetwork: true,
//BlockCreationInterval: 15,
//UnconfirmedCheckInterval: time.Minute * 5,
//UnconfirmedMaxAge: time.Hour * 48, //drop transaction not executed in 48 hours
//UnconfirmedRefreshRate: time.Minute * 30,
//TransactionsPerBlock: 150, //10 transactions/second, 1.5 KB/s
//BlockchainFile: "",
//BlockSigsFile: "",
SecKey: coin.SecKey{},
}
bc.Blocks = make([]SignedBlock, 0) //save blocks to disc and only store head block
bc.blockchain = coin.NewBlockchain()
bc.Unconfirmed = NewUnconfirmedTxnPool()
return bc
}