nacos-viper-remote/viper_remote.go

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2021-04-29 19:54:59 +08:00
package nacos_viper_remote
import (
"bytes"
"errors"
"github.com/spf13/viper"
"io"
)
var nacosOptions = &Option{}
func SetOptions(option *Option) {
nacosOptions = option
}
type remoteConfigProvider struct {
}
func (rc *remoteConfigProvider) Get(rp viper.RemoteProvider) (io.Reader, error) {
cmt, err := getConfigManager(rp)
if err != nil {
return nil, err
}
var b []byte
switch cm := cmt.(type) {
case viperConfigManager:
b, err = cm.Get(rp.Path())
}
if err != nil {
return nil, err
}
return bytes.NewReader(b), nil
}
func (rc *remoteConfigProvider) Watch(rp viper.RemoteProvider) (io.Reader, error) {
return rc.Get(rp)
}
func (rc *remoteConfigProvider) WatchChannel(rp viper.RemoteProvider) (<-chan *viper.RemoteResponse, chan bool) {
cmt, err := getConfigManager(rp)
if err != nil {
return nil, nil
}
switch cm := cmt.(type) {
case viperConfigManager:
quit := make(chan bool)
viperResponseCh := cm.Watch("dataId", quit)
return viperResponseCh, quit
}
return nil, nil
}
func getConfigManager(rp viper.RemoteProvider) (interface{}, error) {
if rp.Provider() == "nacos" {
return NewNacosConfigManager(nacosOptions)
} else {
return nil, errors.New("The Nacos configuration manager is not supported!")
}
}
func init() {
viper.SupportedRemoteProviders = []string{"nacos"}
viper.RemoteConfig = &remoteConfigProvider{}
}