// New returns a ready-to-go miner that is not mining.
func New(cs modules.ConsensusSet, tpool modules.TransactionPool, w modules.Wallet, persistDir string) (*Miner, error) {
// Create the miner and its dependencies.
if cs == nil {
return nil, errors.New("miner cannot use a nil state")
}
if tpool == nil {
return nil, errors.New("miner cannot use a nil transaction pool")
}
if w == nil {
return nil, errors.New("miner cannot use a nil wallet")
}
// Grab some starting block variables.
currentBlock := cs.GenesisBlock().ID()
currentTarget, exists1 := cs.ChildTarget(currentBlock)
earliestTimestamp, exists2 := cs.EarliestChildTimestamp(currentBlock)
if build.DEBUG {
if !exists1 {
panic("could not get child target")
}
if !exists2 {
panic("could not get child earliest timestamp")
}
}
addr, _, err := w.CoinAddress(false) // false indicates that the address should not be visible to the user.
if err != nil {
return nil, err
}
// Assemble the miner.
m := &Miner{
cs: cs,
tpool: tpool,
wallet: w,
parent: currentBlock,
target: currentTarget,
earliestTimestamp: earliestTimestamp,
address: addr,
blockMem: make(map[types.BlockHeader]types.Block),
headerMem: make([]types.BlockHeader, headerForWorkMemory),
persistDir: persistDir,
mu: sync.New(modules.SafeMutexDelay, 1),
}
err = m.initPersist()
if err != nil {
return nil, err
}
m.tpool.TransactionPoolSubscribe(m)
return m, nil
}
// New returns an initialized Host.
func New(cs *consensus.State, hdb modules.HostDB, tpool modules.TransactionPool, wallet modules.Wallet, addr string, saveDir string) (*Host, error) {
if cs == nil {
return nil, errors.New("host cannot use a nil state")
}
if hdb == nil {
return nil, errors.New("host cannot use a nil hostdb")
}
if tpool == nil {
return nil, errors.New("host cannot use a nil tpool")
}
if wallet == nil {
return nil, errors.New("host cannot use a nil wallet")
}
coinAddr, _, err := wallet.CoinAddress(false) // false indicates that the address should not be visible to the user.
if err != nil {
return nil, err
}
h := &Host{
cs: cs,
hostdb: hdb,
tpool: tpool,
wallet: wallet,
// default host settings
HostSettings: modules.HostSettings{
TotalStorage: 10e9, // 10 GB
MaxFilesize: 1e9, // 1 GB
MaxDuration: 144 * 60, // 60 days
WindowSize: 288, // 48 hours
Price: types.NewCurrency64(100e12), // 0.1 siacoin / mb / week
Collateral: types.NewCurrency64(0),
UnlockHash: coinAddr,
},
saveDir: saveDir,
obligationsByID: make(map[types.FileContractID]contractObligation),
obligationsByHeight: make(map[types.BlockHeight][]contractObligation),
mu: sync.New(modules.SafeMutexDelay, 1),
}
h.spaceRemaining = h.TotalStorage
// Create listener and set address.
h.listener, err = net.Listen("tcp", addr)
if err != nil {
return nil, err
}
_, port, _ := net.SplitHostPort(h.listener.Addr().String())
h.myAddr = modules.NetAddress(net.JoinHostPort(modules.ExternalIP, port))
err = os.MkdirAll(saveDir, 0700)
if err != nil {
return nil, err
}
err = h.load()
if err != nil && !os.IsNotExist(err) {
return nil, err
}
// spawn listener
go h.listen()
h.cs.ConsensusSetSubscribe(h)
return h, nil
}