mirror of
https://github.com/openziti/ziti.git
synced 2026-10-15 08:31:50 +00:00
Paul Lorenz
80 lines
2.5 KiB
Go
80 lines
2.5 KiB
Go
/*
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Copyright NetFoundry Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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https://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package handler_link
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import (
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"github.com/michaelquigley/pfxlog"
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"github.com/openziti/channel/v2"
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"github.com/openziti/channel/v2/protobufs"
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"github.com/openziti/ziti/common/pb/ctrl_pb"
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"github.com/openziti/ziti/router/env"
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"github.com/openziti/ziti/router/forwarder"
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"github.com/openziti/ziti/router/xlink"
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"sync/atomic"
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)
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type closeHandler struct {
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link xlink.Xlink
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ctrl env.NetworkControllers
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forwarder *forwarder.Forwarder
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closeNotify chan struct{}
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closed atomic.Bool
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xlinkRegistry xlink.Registry
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}
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func newCloseHandler(link xlink.Xlink, ctrl env.NetworkControllers, forwarder *forwarder.Forwarder, closeNotify chan struct{}, registry xlink.Registry) *closeHandler {
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return &closeHandler{
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link: link,
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ctrl: ctrl,
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forwarder: forwarder,
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closeNotify: closeNotify,
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xlinkRegistry: registry,
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}
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}
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func (self *closeHandler) HandleClose(ch channel.Channel) {
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if self.closed.CompareAndSwap(false, true) {
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log := pfxlog.ContextLogger(ch.Label()).
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WithField("linkId", self.link.Id()).
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WithField("routerId", self.link.DestinationId())
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self.forwarder.UnregisterLink(self.link)
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// ensure that both parts of a split link are closed, if one side closes
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go func() {
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_ = self.link.Close()
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// Close can be called from the link registry, so we can't call back into it from the same go-routine
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self.xlinkRegistry.LinkClosed(self.link)
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}()
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log.Info("link closed")
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self.link.HandleCloseNotification(func() {
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self.ctrl.ForEach(func(controllerId string, ch channel.Channel) {
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fault := &ctrl_pb.Fault{Subject: ctrl_pb.FaultSubject_LinkFault, Id: self.link.Id()}
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if err := protobufs.MarshalTyped(fault).Send(ch); err == nil {
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log.WithField("ctrlId", controllerId).Debug("transmitted link fault")
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} else {
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log.WithField("ctrlId", controllerId).WithError(err).Error("unexpected error transmitting link fault")
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}
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})
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})
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close(self.closeNotify)
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}
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}
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