blob: 4d31f39e1164130e38a444e0d90609245c305e0a [file] [log] [blame]
package graph
import (
"context"
"fmt"
"sync"
"github.com/digitalocean/go-netbox/netbox/client"
"github.com/digitalocean/go-netbox/netbox/client/dcim"
"github.com/digitalocean/go-netbox/netbox/models"
"github.com/golang/glog"
pb "code.hackerspace.pl/hscloud/dc/topo/proto"
)
type MachinePort struct {
Machine *Machine
OtherEnd *SwitchPort
Name string
}
type SwitchPort struct {
Switch *Switch
OtherEnd *MachinePort
Name string
}
type Machine struct {
Name string
Complete bool
Ports map[string]*MachinePort
}
type Switch struct {
Name string
Complete bool
Ports map[string]*SwitchPort
}
type Graph struct {
Switches map[string]*Switch
Machines map[string]*Machine
Mu sync.RWMutex
}
func New() *Graph {
return &Graph{
Switches: make(map[string]*Switch),
Machines: make(map[string]*Machine),
}
}
func (g *Graph) RemoveMachine(name string) {
glog.Infof("Removed machine %q", name)
}
func (g *Graph) RemoveSwitch(name string) {
glog.Infof("Removed switch %q", name)
}
func (g *Graph) LoadConfig(conf *pb.Config) error {
loadedMachines := make(map[string]bool)
loadedSwitches := make(map[string]bool)
// Add new machines and switches.
for _, machinepb := range conf.Machine {
if machinepb.Name == "" {
return fmt.Errorf("empty machine name")
}
if loadedMachines[machinepb.Name] {
return fmt.Errorf("duplicate machine name: %v", machinepb.Name)
}
machine, ok := g.Machines[machinepb.Name]
if !ok {
machine = &Machine{
Name: machinepb.Name,
Ports: make(map[string]*MachinePort),
}
for _, portpb := range machinepb.ManagedPort {
machine.Ports[portpb.Name] = &MachinePort{
Name: portpb.Name,
Machine: machine,
}
}
g.Machines[machinepb.Name] = machine
glog.Infof("Added machine %q with %d managed ports", machine.Name, len(machine.Ports))
}
machine.Complete = false
loadedMachines[machinepb.Name] = true
}
for _, switchpb := range conf.Switch {
if switchpb.Name == "" {
return fmt.Errorf("empty switch name")
}
if loadedSwitches[switchpb.Name] {
return fmt.Errorf("duplicate switch name: %v", switchpb.Name)
}
if loadedMachines[switchpb.Name] {
return fmt.Errorf("switch name collides with machine name: %v", switchpb.Name)
}
sw, ok := g.Switches[switchpb.Name]
if !ok {
sw = &Switch{
Name: switchpb.Name,
Ports: make(map[string]*SwitchPort),
}
for _, portpb := range switchpb.ManagedPort {
sw.Ports[portpb.Name] = &SwitchPort{
Name: portpb.Name,
Switch: sw,
}
}
g.Switches[switchpb.Name] = sw
glog.Infof("Added switch %q with %d managed ports", sw.Name, len(sw.Ports))
}
sw.Complete = false
loadedSwitches[switchpb.Name] = true
}
// Remove old machines and switches.
removeMachines := make(map[string]bool)
removeSwitches := make(map[string]bool)
for name, _ := range g.Switches {
if !loadedSwitches[name] {
removeSwitches[name] = true
}
}
for name, _ := range g.Machines {
if !loadedMachines[name] {
removeMachines[name] = true
}
}
for name, _ := range removeMachines {
g.RemoveMachine(name)
}
for name, _ := range removeSwitches {
g.RemoveSwitch(name)
}
return nil
}
func (g *Graph) FeedFromNetbox(ctx context.Context, nb *client.NetBox) error {
// Clear all connections first, because it's easier that way.
for _, machine := range g.Machines {
for _, port := range machine.Ports {
port.OtherEnd = nil
}
}
for _, sw := range g.Switches {
for _, port := range sw.Ports {
port.OtherEnd = nil
}
}
// Load new connections.
// Iterating over just machines should be fine if all connections are
// guaranteed to be between machines and switches (which is the model for
// now).
for _, machine := range g.Machines {
req := &dcim.DcimInterfaceConnectionsListParams{
Device: &machine.Name,
Context: ctx,
}
res, err := nb.Dcim.DcimInterfaceConnectionsList(req, nil)
if err != nil {
return fmt.Errorf("while querying information about %q: %v", machine.Name, err)
}
for _, connection := range res.Payload.Results {
ia := connection.InterfaceA
ib := connection.InterfaceB
if ia == nil || ib == nil {
continue
}
// Find which way this thing actually connects.
var thisSide, otherSide *models.PeerInterface
if ia.Device.Name == machine.Name {
thisSide = ia
otherSide = ib
} else if ib.Device.Name == machine.Name {
thisSide = ib
otherSide = ia
} else {
glog.Warning("Netbox connectivity for %q reported a link without it involced..?", machine.Name)
continue
}
thisPort, ok := machine.Ports[*thisSide.Name]
if !ok {
continue
}
sw, ok := g.Switches[otherSide.Device.Name]
if !ok {
glog.Warningf("Machine %q port %q is managed but connected to unknown device %q", machine.Name, thisPort.Name, otherSide.Device.Name)
continue
}
otherPort, ok := sw.Ports[*otherSide.Name]
if !ok {
glog.Warningf("Machine %q port %q is managed but connected to unmanaged port %q on %q", machine.Name, thisPort.Name, otherSide.Name, sw.Name)
continue
}
// Connect the two together!
thisPort.OtherEnd = otherPort
otherPort.OtherEnd = thisPort
glog.Infof("Connected: %s/%s <-> %s/%s", machine.Name, thisPort.Name, sw.Name, otherPort.Name)
}
}
return nil
}