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faulter.go
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/
faulter.go
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/*
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 forwarder
import (
"github.com/michaelquigley/pfxlog"
"github.com/openziti/channel/v2"
"github.com/openziti/channel/v2/protobufs"
"github.com/openziti/ziti/common/pb/ctrl_pb"
"github.com/openziti/ziti/router/env"
cmap "github.com/orcaman/concurrent-map/v2"
"github.com/sirupsen/logrus"
"strings"
"time"
)
type Faulter struct {
ctrls env.NetworkControllers
interval time.Duration
circuitIds cmap.ConcurrentMap[string, string]
closeNotify chan struct{}
}
func NewFaulter(ctrls env.NetworkControllers, interval time.Duration, closeNotify chan struct{}) *Faulter {
f := &Faulter{
ctrls: ctrls,
interval: interval,
circuitIds: cmap.New[string](),
closeNotify: closeNotify,
}
if interval > 0 {
go f.run()
}
return f
}
func (self *Faulter) report(circuitId string, ctrlId string) {
if self.interval > 0 {
self.circuitIds.Set(circuitId, ctrlId)
}
}
func (self *Faulter) notifyInvalidLink(linkId string) {
log := pfxlog.Logger()
self.ctrls.ForEach(func(ctrlId string, ch channel.Channel) {
fault := &ctrl_pb.Fault{Subject: ctrl_pb.FaultSubject_LinkFault, Id: linkId}
if err := protobufs.MarshalTyped(fault).WithTimeout(self.ctrls.DefaultRequestTimeout()).Send(ch); err != nil {
log.WithError(err).
WithField("ctrlId", ctrlId).
WithField("linkId", linkId).
Error("failed to notify of invalid link")
}
})
}
func (self *Faulter) run() {
logrus.Infof("started")
defer logrus.Errorf("exited")
for {
select {
case <-time.After(self.interval):
workloadByCtrl := map[string][]string{}
self.circuitIds.IterCb(func(circuitId, ctrlId string) {
workloadByCtrl[ctrlId] = append(workloadByCtrl[ctrlId], circuitId)
})
for ctrlId, workload := range workloadByCtrl {
// Proactively remove from reported circuitIds. If we fail below, forwarder will continue to report.
for _, circuitId := range workload {
self.circuitIds.Remove(circuitId)
}
circuitIds := strings.Join(workload, " ")
if ctrlId != "" {
log := pfxlog.Logger().WithField("ctrlId", ctrlId)
ch := self.ctrls.GetCtrlChannel(ctrlId)
if ch == nil {
log.Error("no control channel for controller")
continue
}
fault := &ctrl_pb.Fault{Subject: ctrl_pb.FaultSubject_ForwardFault, Id: circuitIds}
if err := protobufs.MarshalTyped(fault).Send(ch); err == nil {
log.WithField("circuitCount", len(workload)).Warn("reported forwarding faults")
} else {
log.WithError(err).Error("error sending fault report")
}
} else { // send to all controllers
fault := &ctrl_pb.Fault{Subject: ctrl_pb.FaultSubject_UnknownOwnerForwardFault, Id: circuitIds}
self.ctrls.ForEach(func(ctrlId string, ch channel.Channel) {
log := pfxlog.Logger().WithField("ctrlId", ctrlId)
if err := protobufs.MarshalTyped(fault).Send(ch); err == nil {
log.WithField("circuitCount", len(workload)).Warn("reported forwarding faults")
} else {
log.WithError(err).Error("error sending fault report")
}
})
}
}
case <-self.closeNotify:
return
}
}
}