lnd.xprv/chainntnfs/bitcoindnotify/driver.go
2018-08-02 18:20:49 -07:00

54 lines
1.4 KiB
Go

package bitcoindnotify
import (
"fmt"
"github.com/btcsuite/btcd/chaincfg"
"github.com/btcsuite/btcd/rpcclient"
"github.com/lightningnetwork/lnd/chainntnfs"
)
// createNewNotifier creates a new instance of the ChainNotifier interface
// implemented by BitcoindNotifier.
func createNewNotifier(args ...interface{}) (chainntnfs.ChainNotifier, error) {
if len(args) != 3 {
return nil, fmt.Errorf("incorrect number of arguments to "+
".New(...), expected 3, instead passed %v", len(args))
}
config, ok := args[0].(*rpcclient.ConnConfig)
if !ok {
return nil, fmt.Errorf("first argument to bitcoindnotifier." +
"New is incorrect, expected a *rpcclient.ConnConfig")
}
zmqConnect, ok := args[1].(string)
if !ok {
return nil, fmt.Errorf("second argument to bitcoindnotifier." +
"New is incorrect, expected a string")
}
params, ok := args[2].(chaincfg.Params)
if !ok {
return nil, fmt.Errorf("third argument to bitcoindnotifier." +
"New is incorrect, expected a chaincfg.Params")
}
return New(config, zmqConnect, params)
}
// init registers a driver for the BtcdNotifier concrete implementation of the
// chainntnfs.ChainNotifier interface.
func init() {
// Register the driver.
notifier := &chainntnfs.NotifierDriver{
NotifierType: notifierType,
New: createNewNotifier,
}
if err := chainntnfs.RegisterNotifier(notifier); err != nil {
panic(fmt.Sprintf("failed to register notifier driver '%s': %v",
notifierType, err))
}
}