// TestAddDuplicateDriver ensures that adding a duplicate driver does not
// overwrite an existing one.
func TestAddDuplicateDriver(t *testing.T) {
supportedDrivers := database.SupportedDrivers()
if len(supportedDrivers) == 0 {
t.Errorf("no backends to test")
return
}
dbType := supportedDrivers[0]
// bogusCreateDB is a function which acts as a bogus create and open
// driver function and intentionally returns a failure that can be
// detected if the interface allows a duplicate driver to overwrite an
// existing one.
bogusCreateDB := func(args ...interface{}) (database.DB, error) {
return nil, fmt.Errorf("duplicate driver allowed for database "+
"type [%v]", dbType)
}
// Create a driver that tries to replace an existing one. Set its
// create and open functions to a function that causes a test failure if
// they are invoked.
driver := database.Driver{
DbType: dbType,
Create: bogusCreateDB,
Open: bogusCreateDB,
}
testName := "duplicate driver registration"
err := database.RegisterDriver(driver)
if !checkDbError(t, testName, err, database.ErrDbTypeRegistered) {
return
}
}
// isSupportedDbType returns whether or not the passed database type is
// currently supported.
func isSupportedDbType(dbType string) bool {
supportedDrivers := database.SupportedDrivers()
for _, driver := range supportedDrivers {
if dbType == driver {
return true
}
}
return false
}
_ "github.com/roasbeef/btcd/database/ffldb"
"github.com/roasbeef/btcd/wire"
"github.com/roasbeef/btcutil"
)
const (
minCandidates = 1
maxCandidates = 20
defaultNumCandidates = 5
defaultDbType = "ffldb"
)
var (
btcdHomeDir = btcutil.AppDataDir("btcd", false)
defaultDataDir = filepath.Join(btcdHomeDir, "data")
knownDbTypes = database.SupportedDrivers()
activeNetParams = &chaincfg.MainNetParams
)
// config defines the configuration options for findcheckpoint.
//
// See loadConfig for details on the configuration load process.
type config struct {
DataDir string `short:"b" long:"datadir" description:"Location of the btcd data directory"`
DbType string `long:"dbtype" description:"Database backend to use for the Block Chain"`
TestNet3 bool `long:"testnet" description:"Use the test network"`
RegressionTest bool `long:"regtest" description:"Use the regression test network"`
SimNet bool `long:"simnet" description:"Use the simulation test network"`
NumCandidates int `short:"n" long:"numcandidates" description:"Max num of checkpoint candidates to show {1-20}"`
UseGoOutput bool `short:"g" long:"gooutput" description:"Display the candidates using Go syntax that is ready to insert into the btcchain checkpoint list"`
}