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98 lines
2.5 KiB
Go
98 lines
2.5 KiB
Go
//go:build kvdb_sqlite && !(windows && (arm || 386)) && !(linux && (ppc64 || mips || mipsle || mips64))
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package sqlite
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import (
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"context"
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"fmt"
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"github.com/btcsuite/btcwallet/walletdb"
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)
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const (
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dbType = "sqlite"
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)
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// parseArgs parses the arguments from the walletdb Open/Create methods.
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func parseArgs(funcName string, args ...interface{}) (context.Context, *Config,
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string, string, string, error) {
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if len(args) != 5 {
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return nil, nil, "", "", "", fmt.Errorf("invalid number of "+
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"arguments to %s.%s -- expected: context.Context, "+
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"sql.Config, string, string, string", dbType, funcName)
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}
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ctx, ok := args[0].(context.Context)
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if !ok {
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return nil, nil, "", "", "", fmt.Errorf("argument 0 to %s.%s "+
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"is invalid -- expected: context.Context", dbType,
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funcName)
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}
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config, ok := args[1].(*Config)
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if !ok {
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return nil, nil, "", "", "", fmt.Errorf("argument 1 to %s.%s "+
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"is invalid -- expected: sqlite.Config", dbType,
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funcName)
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}
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dbPath, ok := args[2].(string)
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if !ok {
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return nil, nil, "", "", "", fmt.Errorf("argument 2 to %s.%s "+
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"is invalid -- expected string", dbType, dbPath)
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}
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fileName, ok := args[3].(string)
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if !ok {
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return nil, nil, "", "", "", fmt.Errorf("argument 3 to %s.%s "+
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"is invalid -- expected string", dbType, funcName)
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}
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prefix, ok := args[4].(string)
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if !ok {
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return nil, nil, "", "", "", fmt.Errorf("argument 4 to %s.%s "+
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"is invalid -- expected string", dbType, funcName,
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)
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}
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return ctx, config, dbPath, fileName, prefix, nil
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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{}) (walletdb.DB, error) {
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ctx, config, dbPath, filename, prefix, err := parseArgs(
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"Create", args...,
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)
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if err != nil {
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return nil, err
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}
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return NewSqliteBackend(ctx, config, dbPath, filename, prefix)
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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{}) (walletdb.DB, error) {
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ctx, config, dbPath, filename, prefix, 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 NewSqliteBackend(ctx, config, dbPath, filename, prefix)
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}
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func init() {
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// Register the driver.
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driver := walletdb.Driver{
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DbType: dbType,
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Create: createDBDriver,
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Open: openDBDriver,
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}
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if err := walletdb.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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