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Add lastUpdate field to machine, function issue message on update channel

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This commit adds a new field to machine, lastSuccessfulUpdate which
tracks when we last was able to send a proper mapupdate to the node. The
purpose of this is to be able to compare to a "global" last updated time
and determine if we need to send an update map request to a node.

In addition it allows us to create a scheduled check to see if all known
nodes are up to date.

Also, add a helper function to send a message to the update channel of a
machine.
This commit is contained in:
Kristoffer Dalby 2021-08-18 23:17:38 +01:00
parent 6fa61380b2
commit 2f883410d2
1 changed files with 68 additions and 13 deletions
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67
machine.go
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@ -2,6 +2,7 @@ package headscale
import (
"encoding/json"
"errors"
"fmt"
"sort"
"strconv"
@ -32,6 +33,7 @@ type Machine struct {
AuthKey *PreAuthKey
LastSeen *time.Time
LastSuccessfulUpdate *time.Time
Expiry *time.Time
HostInfo datatypes.JSON
@ -211,6 +213,13 @@ func (h *Headscale) GetMachineByID(id uint64) (*Machine, error) {
return &m, nil
}
func (h *Headscale) UpdateMachine(m *Machine) error {
if result := h.db.Find(m).First(&m); result.Error != nil {
return result.Error
}
return nil
}
// DeleteMachine softs deletes a Machine from the database
func (h *Headscale) DeleteMachine(m *Machine) error {
m.Registered = false
@ -251,21 +260,67 @@ func (m *Machine) GetHostInfo() (*tailcfg.Hostinfo, error) {
func (h *Headscale) notifyChangesToPeers(m *Machine) {
peers, _ := h.getPeers(*m)
for _, p := range *peers {
pUp, ok := h.clientsPolling.Load(uint64(p.ID))
if ok {
log.Info().
Str("func", "notifyChangesToPeers").
Str("machine", m.Name).
Str("peer", m.Name).
Str("peer", p.Name).
Str("address", p.Addresses[0].String()).
Msgf("Notifying peer %s (%s)", p.Name, p.Addresses[0])
pUp.(chan []byte) <- []byte{}
} else {
err := h.requestUpdate(p)
if err != nil {
log.Info().
Str("func", "notifyChangesToPeers").
Str("machine", m.Name).
Str("peer", m.Name).
Str("peer", p.Name).
Msgf("Peer %s does not appear to be polling", p.Name)
}
log.Trace().
Str("func", "notifyChangesToPeers").
Str("machine", m.Name).
Str("peer", p.Name).
Str("address", p.Addresses[0].String()).
Msgf("Notified peer %s (%s)", p.Name, p.Addresses[0])
}
}
func (h *Headscale) requestUpdate(m *tailcfg.Node) error {
pUp, ok := h.clientsUpdateChannels.Load(uint64(m.ID))
if ok {
log.Info().
Str("func", "requestUpdate").
Str("machine", m.Name).
Msgf("Notifying peer %s", m.Name)
if update, ok := pUp.(chan struct{}); ok {
log.Trace().
Str("func", "requestUpdate").
Str("machine", m.Name).
Msgf("Update channel is %#v", update)
update <- struct{}{}
log.Trace().
Str("func", "requestUpdate").
Str("machine", m.Name).
Msgf("Notified machine %s", m.Name)
}
} else {
log.Info().
Str("func", "requestUpdate").
Str("machine", m.Name).
Msgf("Machine %s does not appear to be polling", m.Name)
return errors.New("machine does not seem to be polling")
}
return nil
}
func (h *Headscale) isOutdated(m *Machine) bool {
lastChange := h.getLastStateChange()
log.Trace().
Str("func", "keepAlive").
Str("machine", m.Name).
Time("last_successful_update", *m.LastSuccessfulUpdate).
Time("last_state_change", lastChange).
Msgf("Checking if %s is missing updates", m.Name)
return m.LastSuccessfulUpdate.Before(lastChange)
}