go-mmkv/callback.go

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2022-12-04 14:42:29 +00:00
/*
* Tencent is pleased to support the open source community by making
* MMKV available.
*
* Copyright (C) 2020 THL A29 Limited, a Tencent company.
* All rights reserved.
*
* Licensed under the BSD 3-Clause License (the "License"); you may not use
* this file except in compliance with the License. You may obtain a copy of
* the License at
*
* https://opensource.org/licenses/BSD-3-Clause
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// MMKV is a cross-platform key-value storage framework developed by WeChat.
package mmkv
/*
#include "golang-bridge.h"
#include <stdlib.h>
*/
import "C"
// the callback type of Logger
type LogHandler func(level int, file string, line int, function string, message string)
var gLogHandler LogHandler
// register a log callback
func RegisterLogHandler(logHandler LogHandler) {
gLogHandler = logHandler
C.setWantsLogRedirect(C.bool(true))
}
// unregister a log callback
func UnRegisterLogHandler() {
gLogHandler = nil
C.setWantsLogRedirect(C.bool(false))
}
//export myLogHandler
func myLogHandler(level int, file string, line int, function string, message string) {
if gLogHandler != nil {
gLogHandler(level, file, line, function, message)
}
}
const (
OnErrorDiscard = iota // When there's an error, MMKV will discard everything by default.
OnErrorRecover // When there's an error, MMKV will try to recover as much data as possible.
)
const (
MMKVCRCCheckFail = iota
MMKVFileLength
)
// the callback type of error handler
// error is either MMKVCRCCheckFail or MMKVFileLength
// return OnErrorDiscard (default) or OnErrorRecover
type ErrorHandler func(mmapID string, error int) int
var gErrorHandler ErrorHandler
// register a error callback
func RegisterErrorHandler(errorHandler ErrorHandler) {
gErrorHandler = errorHandler
C.setWantsErrorHandle(C.bool(true))
}
// unregister a error callback
func UnRegisterErrorHandler() {
gErrorHandler = nil
C.setWantsErrorHandle(C.bool(false))
}
//export myErrorHandler
func myErrorHandler(mmapID string, error int) int {
if gErrorHandler != nil {
return gErrorHandler(mmapID, error)
}
return OnErrorDiscard
}
// the type of content change handler
type ContentChangeHandler func(mmapID string)
var gContentChangeHandler ContentChangeHandler
// register a content change callback
func RegisterContentChangeHandler(contentChangeHandler ContentChangeHandler) {
gContentChangeHandler = contentChangeHandler
C.setWantsContentChangeHandle(C.bool(true))
}
// unregister a content change callback
func UnRegisterContentChangeHandler() {
gContentChangeHandler = nil
C.setWantsContentChangeHandle(C.bool(false))
}
//export myContentChangeHandler
func myContentChangeHandler(mmapID string) {
if gContentChangeHandler != nil {
gContentChangeHandler(mmapID)
}
}