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hooks.go
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hooks.go
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// Copyright 2022 Douyu
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// 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.
package hooks
import (
"fmt"
"github.com/fatih/color"
)
var (
globalHooks = make([][]func(), StageMax)
)
type Stage int
func (s Stage) String() string {
switch s {
case Stage_BeforeLoadConfig:
return "BeforeLoadConfig"
case Stage_AfterLoadConfig:
return "AfterLoadConfig"
case Stage_BeforeRun:
return "BeforeRun"
case Stage_BeforeStop:
return "BeforeStop"
case Stage_AfterStop:
return "AfterStop"
}
return "Unknown"
}
const (
Stage_BeforeLoadConfig Stage = iota
Stage_AfterLoadConfig
Stage_BeforeRun
Stage_BeforeStop
Stage_AfterStop
StageMax
)
// Register 注册一个defer函数
func Register(stage Stage, fns ...func()) {
globalHooks[stage] = append(globalHooks[stage], fns...)
}
// Do 执行
func Do(stage Stage) {
fmt.Printf("[jupiter] %+v\n", color.GreenString(fmt.Sprintf("hook stage (%s)...", stage)))
if stage >= StageMax {
return
}
for i := len(globalHooks[stage]) - 1; i >= 0; i-- {
fn := globalHooks[stage][i]
if fn != nil {
fn()
}
}
fmt.Printf("[jupiter] %+v\n", color.GreenString(fmt.Sprintf("hook stage (%s)... done", stage)))
}