92 lines
1.5 KiB
Go
92 lines
1.5 KiB
Go
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package journal
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import (
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"fmt"
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"strings"
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)
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type Journal interface {
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Write([]byte, []byte) (int, error)
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Read([]byte, []byte) (int, error)
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Configure(interface{}) error
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}
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var journalTypes map[string]Journal
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func init() {
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journalTypes = make(map[string]Journal)
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}
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func RegisterJournal(engine string, journal Journal) {
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journalTypes[engine] = journal
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}
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func New(ctype string, cfg interface{}) (Journal, error) {
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var err error
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journal, ok := journalTypes[ctype]
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if !ok {
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return nil, fmt.Errorf("unknown cluster type %s. only %s supported", ctype, strings.Join(JournalTypes(), ","))
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}
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if cfg == nil {
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return journal, nil
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}
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err = journal.Configure(cfg)
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if err != nil {
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return nil, err
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}
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return journal, nil
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}
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func JournalTypes() []string {
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var ctypes []string
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for ctype, _ := range journalTypes {
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ctypes = append(ctypes, ctype)
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}
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return ctypes
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}
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type Dummy struct{}
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func (*Dummy) Configure(interface{}) error {
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return nil
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}
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func (*Dummy) Del(interface{}) error {
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return nil
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}
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func (*Dummy) Set(interface{}, interface{}) error {
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return nil
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}
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func (*Dummy) Get(interface{}) (interface{}, error) {
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return nil, nil
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}
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func (*Dummy) Exists(interface{}) (bool, error) {
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return false, nil
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}
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func (*Dummy) Keys() ([]interface{}, error) {
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return nil, nil
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}
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func (*Dummy) OnEvict(func(interface{}, interface{})) error {
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return nil
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}
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func (*Dummy) Peek(interface{}) (interface{}, error) {
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return nil, nil
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}
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func (*Dummy) Purge() error {
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return nil
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}
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func (*Dummy) Size() int {
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return 0
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}
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