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default.go
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default.go
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package paladin
import (
"context"
"flag"
)
var (
// DefaultClient default client.
DefaultClient Client
confPath string
)
func init() {
flag.StringVar(&confPath, "conf", "", "default config path")
}
// Init init config client.
func Init() (err error) {
if confPath != "" {
DefaultClient, err = NewFile(confPath)
} else {
// TODO: Get the configuration from the remote service
panic("Please specify a file or dir name by -conf flag.")
}
if err != nil {
return
}
return
}
// Watch watch on a key. The configuration implements the setter interface, which is invoked when the configuration changes.
func Watch(key string, s Setter) error {
v := DefaultClient.Get(key)
str, err := v.Raw()
if err != nil {
return err
}
if err := s.Set(str); err != nil {
return err
}
go func() {
for event := range WatchEvent(context.Background(), key) {
s.Set(event.Value)
}
}()
return nil
}
// WatchEvent watch on multi keys. Events are returned when the configuration changes.
func WatchEvent(ctx context.Context, keys ...string) <-chan Event {
return DefaultClient.WatchEvent(ctx, keys...)
}
// Get return value by key.
func Get(key string) *Value {
return DefaultClient.Get(key)
}
// GetAll return all config map.
func GetAll() *Map {
return DefaultClient.GetAll()
}
// Keys return values key.
func Keys() []string {
return DefaultClient.GetAll().Keys()
}
// Close close watcher.
func Close() error {
return DefaultClient.Close()
}