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service.go
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/
service.go
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// Copyright 2019 GoAdmin Core Team. All rights reserved.
// Use of this source code is governed by a Apache-2.0 style
// license that can be found in the LICENSE file.
package service
type Service interface {
Name() string
}
type Generator func() (Service, error)
func Register(k string, gen Generator) {
if _, ok := services[k]; ok {
panic("service has been registered")
}
services[k] = gen
}
func GetServices() List {
var (
l = make(List)
err error
)
for k, gen := range services {
if l[k], err = gen(); err != nil {
panic("service initialize fail")
}
}
return l
}
var services = make(Generators)
type Generators map[string]Generator
type List map[string]Service
func (g List) Get(k string) Service {
if v, ok := g[k]; ok {
return v
}
panic("service not found")
}
func (g List) GetOrNot(k string) (Service, bool) {
v, ok := g[k]
return v, ok
}
func (g List) Add(k string, service Service) {
if _, ok := g[k]; ok {
panic("service exist")
}
g[k] = service
}