Files
ziti/router/handler_ctrl/settings.go
T
2022-01-27 11:06:07 -05:00

107 lines
3.0 KiB
Go

/*
Copyright NetFoundry, Inc.
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
https://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 handler_ctrl
import (
"github.com/golang/protobuf/proto"
"github.com/michaelquigley/pfxlog"
"github.com/openziti/fabric/pb/ctrl_pb"
"github.com/openziti/foundation/channel2"
"strings"
)
type CtrlAddressChanger interface {
CreateBackup() (string, error)
UpdateControllerEndpoint(address string) error
Save() error
CurrentCtrlAddress() string
}
type settingsHandler struct {
config CtrlAddressChanger
}
func (handler *settingsHandler) ContentType() int32 {
return int32(ctrl_pb.ContentType_SettingsType)
}
func (handler *settingsHandler) HandleReceive(msg *channel2.Message, ch channel2.Channel) {
settings := &ctrl_pb.Settings{}
if err := proto.Unmarshal(msg.Body, settings); err == nil {
for settingType, settingValue := range settings.Data {
log := pfxlog.ContextLogger(ch.Label()).WithFields(map[string]interface{}{
"settingType": settingType,
"settingValue": settingValue,
})
switch settingType {
case int32(ctrl_pb.SettingTypes_NewCtrlAddress):
newAddress := string(settingValue)
handler.newCtrlAddress(newAddress)
default:
log.Error("unknown setting type, ignored")
}
}
} else {
pfxlog.ContextLogger(ch.Label()).WithError(err).Error("error unmarshalling")
}
}
func newSettingsHandler(config CtrlAddressChanger) channel2.ReceiveHandler {
return &settingsHandler{
config: config,
}
}
func (handler *settingsHandler) newCtrlAddress(newAddress string) {
currentAddress := strings.TrimSpace(handler.config.CurrentCtrlAddress())
newAddress = strings.TrimSpace(newAddress)
log := pfxlog.Logger().WithFields(map[string]interface{}{
"newAddress": newAddress,
"currentAddress": currentAddress,
})
log.Info("received new controller address header")
if currentAddress == newAddress {
log.Warn("ignoring new controller address, same as current value")
return
}
log.Info("new controller address detect creating backup and saving new configuration")
if destBackupPath, err := handler.config.CreateBackup(); err == nil {
log.WithField("backupPath", destBackupPath).Info("backup configuration created")
} else {
log.WithError(err).Error("could not create configuration backup")
return
}
if err := handler.config.UpdateControllerEndpoint(newAddress); err != nil {
log.WithError(err).Error("could not update controller endpoint address")
return
}
if err := handler.config.Save(); err != nil {
log.WithError(err).Error("could not save new configuration")
return
}
log.Info("successfully saved new controller address")
}