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