Serge Bazanski | 28f4907 | 2018-10-06 11:31:18 +0100 | [diff] [blame^] | 1 | package graph |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | |
| 6 | confpb "code.hackerspace.pl/q3k/topo/proto/config" |
| 7 | "github.com/golang/glog" |
| 8 | ) |
| 9 | |
| 10 | type MachinePort struct { |
| 11 | OtherEnd *SwitchPort |
| 12 | Name string |
| 13 | } |
| 14 | |
| 15 | type SwitchPort struct { |
| 16 | OtherEnd *MachinePort |
| 17 | Name string |
| 18 | } |
| 19 | |
| 20 | type Machine struct { |
| 21 | Name string |
| 22 | Complete bool |
| 23 | |
| 24 | Ports map[string]*MachinePort |
| 25 | } |
| 26 | |
| 27 | type Switch struct { |
| 28 | Name string |
| 29 | Complete bool |
| 30 | |
| 31 | Ports map[string]*SwitchPort |
| 32 | } |
| 33 | |
| 34 | type Graph struct { |
| 35 | Switches map[string]*Switch |
| 36 | Machines map[string]*Machine |
| 37 | } |
| 38 | |
| 39 | func New() *Graph { |
| 40 | return &Graph{ |
| 41 | Switches: make(map[string]*Switch), |
| 42 | Machines: make(map[string]*Machine), |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | func (g *Graph) RemoveMachine(name string) { |
| 47 | glog.Infof("Removed machine %q", name) |
| 48 | } |
| 49 | |
| 50 | func (g *Graph) RemoveSwitch(name string) { |
| 51 | glog.Infof("Removed switch %q", name) |
| 52 | } |
| 53 | |
| 54 | func (g *Graph) LoadConfig(conf *confpb.Config) error { |
| 55 | loadedMachines := make(map[string]bool) |
| 56 | loadedSwitches := make(map[string]bool) |
| 57 | |
| 58 | // Add new machines and switches. |
| 59 | for _, machinepb := range conf.Machine { |
| 60 | if machinepb.Name == "" { |
| 61 | return fmt.Errorf("empty machine name") |
| 62 | } |
| 63 | machine, ok := g.Machines[machinepb.Name] |
| 64 | if !ok { |
| 65 | machine = &Machine{ |
| 66 | Name: machinepb.Name, |
| 67 | Ports: make(map[string]*MachinePort), |
| 68 | } |
| 69 | for _, portpb := range machinepb.ManagedPort { |
| 70 | machine.Ports[portpb.Name] = &MachinePort{ |
| 71 | Name: portpb.Name, |
| 72 | } |
| 73 | } |
| 74 | g.Machines[machinepb.Name] = machine |
| 75 | glog.Infof("Added machine %q with %d managed ports", machine.Name, len(machine.Ports)) |
| 76 | } |
| 77 | machine.Complete = false |
| 78 | loadedMachines[machinepb.Name] = true |
| 79 | } |
| 80 | for _, switchpb := range conf.Switch { |
| 81 | if switchpb.Name == "" { |
| 82 | return fmt.Errorf("empty switch name") |
| 83 | } |
| 84 | sw, ok := g.Switches[switchpb.Name] |
| 85 | if !ok { |
| 86 | sw = &Switch{ |
| 87 | Name: switchpb.Name, |
| 88 | Ports: make(map[string]*SwitchPort), |
| 89 | } |
| 90 | for _, portpb := range switchpb.ManagedPort { |
| 91 | sw.Ports[portpb.Name] = &SwitchPort{ |
| 92 | Name: portpb.Name, |
| 93 | } |
| 94 | } |
| 95 | g.Switches[switchpb.Name] = sw |
| 96 | glog.Infof("Added switch %q with %d managed ports", sw.Name, len(sw.Ports)) |
| 97 | } |
| 98 | sw.Complete = false |
| 99 | loadedSwitches[switchpb.Name] = true |
| 100 | } |
| 101 | |
| 102 | // Remove old machines and switches. |
| 103 | removeMachines := make(map[string]bool) |
| 104 | removeSwitches := make(map[string]bool) |
| 105 | for name, _ := range g.Switches { |
| 106 | if !loadedSwitches[name] { |
| 107 | removeSwitches[name] = true |
| 108 | } |
| 109 | } |
| 110 | for name, _ := range g.Machines { |
| 111 | if !loadedMachines[name] { |
| 112 | removeMachines[name] = true |
| 113 | } |
| 114 | } |
| 115 | for name, _ := range removeMachines { |
| 116 | g.RemoveMachine(name) |
| 117 | } |
| 118 | for name, _ := range removeSwitches { |
| 119 | g.RemoveSwitch(name) |
| 120 | } |
| 121 | return nil |
| 122 | |
| 123 | } |