photoprism/internal/config/config_ext.go

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package config
import (
"sync"
"sync/atomic"
)
var (
extMutex sync.Mutex
extensions atomic.Value
)
// Extension represents a named package extension with callbacks.
type Extension struct {
name string
init func(c *Config) error
clientValues func(c *Config, t ClientType) Values
}
// Register registers a new package extension.
func Register(name string, initConfig func(c *Config) error, clientConfig func(c *Config, t ClientType) Values) {
extMutex.Lock()
n, _ := extensions.Load().([]Extension)
extensions.Store(append(n, Extension{name, initConfig, clientConfig}))
extMutex.Unlock()
}
// Extensions returns all registered package extensions.
func Extensions() (ext []Extension) {
extMutex.Lock()
ext, _ = extensions.Load().([]Extension)
extMutex.Unlock()
return ext
}