Files
ziti/router/handler_xgress/close.go
T
2021-01-27 18:07:18 -05:00

73 lines
2.3 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_xgress
import (
"github.com/golang/protobuf/proto"
"github.com/michaelquigley/pfxlog"
"github.com/openziti/fabric/pb/ctrl_pb"
"github.com/openziti/fabric/router/forwarder"
"github.com/openziti/fabric/router/xgress"
"github.com/openziti/foundation/channel2"
)
type closeHandler struct {
ctrl xgress.CtrlChannel
forwarder *forwarder.Forwarder
}
func NewCloseHandler(ctrl xgress.CtrlChannel, forwarder *forwarder.Forwarder) *closeHandler {
return &closeHandler{ctrl: ctrl, forwarder: forwarder}
}
func (txc *closeHandler) HandleXgressClose(x *xgress.Xgress) {
log := pfxlog.ContextLogger(x.Label())
log.Debug("running")
defer log.Debug("complete")
x.ForwardEndOfSession(func(payload *xgress.Payload) bool {
log.Debug("sending end of session payload")
if err := txc.forwarder.ForwardPayload(x.Address(), x.GetEndSession()); err != nil {
// ok that we couldn't forward close, as that means it was already closed
log.Debugf("error forwarding end session payload (%s)", err)
return false
}
return true
})
// Notify the forwarder that the session is ending
log.Debug("removing session from forwarder")
txc.forwarder.EndSession(x.SessionId())
// Notify the controller of the xgress fault
fault := &ctrl_pb.Fault{Id: x.SessionId()}
if x.Originator() == xgress.Initiator {
fault.Subject = ctrl_pb.FaultSubject_IngressFault
} else if x.Originator() == xgress.Terminator {
fault.Subject = ctrl_pb.FaultSubject_EgressFault
}
if body, err := proto.Marshal(fault); err == nil {
msg := channel2.NewMessage(int32(ctrl_pb.ContentType_FaultType), body)
log.Debug("notifying controller of fault")
if err := txc.ctrl.Channel().Send(msg); err != nil {
log.Errorf("error sending fault (%s)", err)
}
} else {
log.Errorf("error marshalling (%s)", err)
}
}