84 lines
2.1 KiB
Go
84 lines
2.1 KiB
Go
// Copyright (c) 2015-2016 The btcsuite developers
|
|
// Use of this source code is governed by an ISC
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package ffldb
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/btcsuite/btclog"
|
|
"github.com/lbryio/lbcd/database"
|
|
"github.com/lbryio/lbcd/wire"
|
|
)
|
|
|
|
var log = btclog.Disabled
|
|
|
|
const (
|
|
dbType = "ffldb"
|
|
)
|
|
|
|
// parseArgs parses the arguments from the database Open/Create methods.
|
|
func parseArgs(funcName string, args ...interface{}) (string, wire.BitcoinNet, error) {
|
|
if len(args) != 2 {
|
|
return "", 0, fmt.Errorf("invalid arguments to %s.%s -- "+
|
|
"expected database path and block network", dbType,
|
|
funcName)
|
|
}
|
|
|
|
dbPath, ok := args[0].(string)
|
|
if !ok {
|
|
return "", 0, fmt.Errorf("first argument to %s.%s is invalid -- "+
|
|
"expected database path string", dbType, funcName)
|
|
}
|
|
|
|
network, ok := args[1].(wire.BitcoinNet)
|
|
if !ok {
|
|
return "", 0, fmt.Errorf("second argument to %s.%s is invalid -- "+
|
|
"expected block network", dbType, funcName)
|
|
}
|
|
|
|
return dbPath, network, nil
|
|
}
|
|
|
|
// openDBDriver is the callback provided during driver registration that opens
|
|
// an existing database for use.
|
|
func openDBDriver(args ...interface{}) (database.DB, error) {
|
|
dbPath, network, err := parseArgs("Open", args...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return openDB(dbPath, network, false)
|
|
}
|
|
|
|
// createDBDriver is the callback provided during driver registration that
|
|
// creates, initializes, and opens a database for use.
|
|
func createDBDriver(args ...interface{}) (database.DB, error) {
|
|
dbPath, network, err := parseArgs("Create", args...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return openDB(dbPath, network, true)
|
|
}
|
|
|
|
// useLogger is the callback provided during driver registration that sets the
|
|
// current logger to the provided one.
|
|
func useLogger(logger btclog.Logger) {
|
|
log = logger
|
|
}
|
|
|
|
func init() {
|
|
// Register the driver.
|
|
driver := database.Driver{
|
|
DbType: dbType,
|
|
Create: createDBDriver,
|
|
Open: openDBDriver,
|
|
UseLogger: useLogger,
|
|
}
|
|
if err := database.RegisterDriver(driver); err != nil {
|
|
panic(fmt.Sprintf("Failed to regiser database driver '%s': %v",
|
|
dbType, err))
|
|
}
|
|
}
|