func TestGraphPathTraversal(t *testing.T) {
g := newGraph(t)
n1 := g.NewNode(graph.GenID(), graph.Metadata{"Type": "host", "Name": "localhost"})
n2 := g.NewNode(graph.GenID(), graph.Metadata{"Name": "N2", "Type": "T2"})
n3 := g.NewNode(graph.GenID(), graph.Metadata{"Name": "N3", "Type": "T3"})
g.Link(n1, n2, graph.Metadata{"RelationType": "ownership"})
g.Link(n2, n3, graph.Metadata{"RelationType": "ownership"})
query := `G.V().Has("Name", "N3").GraphPath()`
tp := traversal.NewGremlinTraversalParser(strings.NewReader(query), g)
tp.AddTraversalExtension(NewTopologyTraversalExtension())
ts, err := tp.Parse()
if err != nil {
t.Fatal(err.Error())
}
res, err := ts.Exec()
if err != nil {
t.Fatal(err.Error())
}
if len(res.Values()) != 1 || res.Values()[0].(string) != "localhost[Type=host]/N2[Type=T2]/N3[Type=T3]" {
t.Fatalf("Should return 1 path, returned: %v", res.Values())
}
}
func newTransversalGraph(t *testing.T) *graph.Graph {
g := newGraph(t)
n1 := g.NewNode(graph.GenID(), graph.Metadata{"Value": 1, "Type": "intf", "Bytes": 1024})
n2 := g.NewNode(graph.GenID(), graph.Metadata{"Value": 2, "Type": "intf", "Bytes": 2024})
n3 := g.NewNode(graph.GenID(), graph.Metadata{"Value": 3})
n4 := g.NewNode(graph.GenID(), graph.Metadata{"Value": 4, "Name": "Node4", "Bytes": 4024})
g.Link(n1, n2, graph.Metadata{"Direction": "Left"})
g.Link(n2, n3, graph.Metadata{"Direction": "Left"})
g.Link(n3, n4)
g.Link(n1, n4)
g.Link(n1, n3, graph.Metadata{"Mode": "Direct"})
return g
}
func TestMarshal(t *testing.T) {
g := newGraph(t)
n1 := g.NewNode(graph.GenID(), graph.Metadata{"Name": "N1", "Type": "T1"})
n2 := g.NewNode(graph.GenID(), graph.Metadata{"Name": "N2", "Type": "T2"})
n3 := g.NewNode(graph.GenID(), graph.Metadata{"Name": "N3", "Type": "T3"})
g.Link(n1, n2)
g.Link(n2, n3)
r := g.LookupShortestPath(n3, graph.Metadata{"Name": "N1"})
if len(r) == 0 {
t.Errorf("Wrong nodes returned: %v", r)
}
path := NodePath(r).Marshal()
if path != "N1[Type=T1]/N2[Type=T2]/N3[Type=T3]" {
t.Errorf("Wrong path returned: %s", path)
}
}
func (u *NetLinkProbe) addOvsLinkToTopology(link netlink.Link, m graph.Metadata) *graph.Node {
name := link.Attrs().Name
intf := u.Graph.LookupFirstNode(graph.Metadata{"Name": name, "Driver": "openvswitch"})
if intf == nil {
intf = u.Graph.NewNode(graph.GenID(), m)
}
if !u.Graph.AreLinked(u.Root, intf) {
u.Graph.Link(u.Root, intf, graph.Metadata{"RelationType": "ownership"})
}
return intf
}
func (u *NetNSProbe) Register(path string, extraMetadata graph.Metadata) *graph.Node {
ns, ok := u.pathToNetNS[path]
if !ok {
var s syscall.Stat_t
fd, err := syscall.Open(path, syscall.O_RDONLY, 0)
if err != nil {
logging.GetLogger().Errorf("Error registering namespace %s: %s", path, err.Error())
return nil
}
defer syscall.Close(fd)
if err := syscall.Fstat(fd, &s); err != nil {
logging.GetLogger().Errorf("Error reading namespace %s: %s", path, err.Error())
return nil
}
ns = &NetNs{path: path, dev: s.Dev, ino: s.Ino}
u.pathToNetNS[path] = ns
}
u.Lock()
defer u.Unlock()
nsString := ns.String()
probe, ok := u.nsnlProbes[nsString]
if ok {
probe.useCount++
logging.GetLogger().Debugf("Increasing counter for namespace %s to %d", nsString, probe.useCount)
return probe.Root
}
u.Graph.Lock()
defer u.Graph.Unlock()
logging.GetLogger().Debugf("Network Namespace added: %s", nsString)
metadata := graph.Metadata{"Name": getNetNSName(path), "Type": "netns", "Path": path}
if extraMetadata != nil {
for k, v := range extraMetadata {
metadata[k] = v
}
}
n := u.Graph.NewNode(graph.GenID(), metadata)
u.Graph.Link(u.Root, n, graph.Metadata{"RelationType": "ownership"})
nu := NewNetNsNetLinkTopoUpdater(u.Graph, n)
go nu.Start(ns)
u.nsnlProbes[nsString] = nu
return n
}
func (probe *DockerProbe) registerContainer(id string) {
probe.Lock()
defer probe.Unlock()
if _, ok := probe.containerMap[id]; ok {
return
}
info, err := probe.client.ContainerInspect(context.Background(), id)
if err != nil {
logging.GetLogger().Errorf("Failed to inspect Docker container %s: %s", id, err.Error())
return
}
nsHandle, err := netns.GetFromPid(info.State.Pid)
if err != nil {
return
}
defer nsHandle.Close()
namespace := probe.containerNamespace(info.State.Pid)
logging.GetLogger().Debugf("Register docker container %s and PID %d", info.ID, info.State.Pid)
var n *graph.Node
if probe.hostNs.Equal(nsHandle) {
// The container is in net=host mode
n = probe.Root
} else {
n = probe.Register(namespace, graph.Metadata{"Name": info.Name[1:], "Manager": "docker"})
}
probe.Graph.Lock()
metadata := graph.Metadata{
"Type": "container",
"Name": info.Name[1:],
"Docker/ContainerID": info.ID,
"Docker/ContainerName": info.Name,
"Docker/ContainerPID": info.State.Pid,
}
containerNode := probe.Graph.NewNode(graph.GenID(), metadata)
probe.Graph.Link(n, containerNode, graph.Metadata{"RelationType": "membership"})
probe.Graph.Unlock()
probe.containerMap[info.ID] = ContainerInfo{
Pid: info.State.Pid,
Node: containerNode,
}
}
func (u *NetLinkProbe) addGenericLinkToTopology(link netlink.Link, m graph.Metadata) *graph.Node {
name := link.Attrs().Name
index := int64(link.Attrs().Index)
var intf *graph.Node
intf = u.Graph.LookupFirstChild(u.Root, graph.Metadata{
"IfIndex": index,
})
// could be a member of ovs
intfs := u.Graph.GetNodes(graph.Metadata{
"Name": name,
"IfIndex": index,
})
for _, i := range intfs {
if _, ok := i.Metadata()["UUID"]; ok {
intf = i
break
}
}
if intf == nil {
intf = u.Graph.NewNode(graph.GenID(), m)
}
if intf == nil {
return nil
}
if !u.Graph.AreLinked(u.Root, intf) {
u.Graph.Link(u.Root, intf, graph.Metadata{"RelationType": "ownership"})
}
// ignore ovs-system interface as it doesn't make any sense according to
// the following thread:
// http://openvswitch.org/pipermail/discuss/2013-October/011657.html
if name == "ovs-system" {
return intf
}
u.handleIntfIsChild(intf, link)
u.handleIntfIsVeth(intf, link)
u.handleIntfIsBond(intf, link)
return intf
}
func (o *OvsdbProbe) OnOvsBridgeAdd(monitor *ovsdb.OvsMonitor, uuid string, row *libovsdb.RowUpdate) {
o.Lock()
defer o.Unlock()
name := row.New.Fields["name"].(string)
o.Graph.Lock()
defer o.Graph.Unlock()
bridge := o.Graph.LookupFirstNode(graph.Metadata{"UUID": uuid})
if bridge == nil {
bridge = o.Graph.NewNode(graph.GenID(), graph.Metadata{"Name": name, "UUID": uuid, "Type": "ovsbridge"})
o.Graph.Link(o.Root, bridge, graph.Metadata{"RelationType": "ownership"})
}
switch row.New.Fields["ports"].(type) {
case libovsdb.OvsSet:
set := row.New.Fields["ports"].(libovsdb.OvsSet)
for _, i := range set.GoSet {
u := i.(libovsdb.UUID).GoUUID
port, ok := o.uuidToPort[u]
if ok && !o.Graph.AreLinked(bridge, port) {
o.Graph.Link(bridge, port, graph.Metadata{"RelationType": "layer2"})
} else {
/* will be filled later when the port update for this port will be triggered */
o.portBridgeQueue[u] = bridge
}
}
case libovsdb.UUID:
u := row.New.Fields["ports"].(libovsdb.UUID).GoUUID
port, ok := o.uuidToPort[u]
if ok && !o.Graph.AreLinked(bridge, port) {
o.Graph.Link(bridge, port, graph.Metadata{"RelationType": "layer2"})
} else {
/* will be filled later when the port update for this port will be triggered */
o.portBridgeQueue[u] = bridge
}
}
}
func (u *NetLinkProbe) addBridgeLinkToTopology(link netlink.Link, m graph.Metadata) *graph.Node {
name := link.Attrs().Name
index := int64(link.Attrs().Index)
intf := u.Graph.LookupFirstChild(u.Root, graph.Metadata{
"Name": name,
"IfIndex": index,
})
if intf == nil {
intf = u.Graph.NewNode(graph.GenID(), m)
}
if !u.Graph.AreLinked(u.Root, intf) {
u.Graph.Link(u.Root, intf, graph.Metadata{"RelationType": "ownership"})
}
u.linkPendingChildren(intf, index)
return intf
}
func TestRegexPredicate(t *testing.T) {
g := newGraph(t)
g.NewNode(graph.GenID(), graph.Metadata{"Type": "host", "Name": "localhost"})
query := `G.V().Has("Name", Regex("^local.*st$")).Count()`
tp := traversal.NewGremlinTraversalParser(strings.NewReader(query), g)
tp.AddTraversalExtension(NewTopologyTraversalExtension())
ts, err := tp.Parse()
if err != nil {
t.Fatal(err.Error())
}
res, err := ts.Exec()
if err != nil {
t.Fatal(err.Error())
}
if len(res.Values()) != 1 || res.Values()[0].(int) != 1 {
t.Fatalf("Regex should exactly match 1 node, returned: %v", res.Values())
}
}
func (o *OvsdbProbe) OnOvsPortAdd(monitor *ovsdb.OvsMonitor, uuid string, row *libovsdb.RowUpdate) {
o.Lock()
defer o.Unlock()
o.Graph.Lock()
defer o.Graph.Unlock()
port, ok := o.uuidToPort[uuid]
if !ok {
port = o.Graph.NewNode(graph.GenID(), graph.Metadata{
"UUID": uuid,
"Name": row.New.Fields["name"].(string),
"Type": "ovsport",
})
o.uuidToPort[uuid] = port
}
// bond mode
if mode, ok := row.New.Fields["bond_mode"]; ok {
switch mode.(type) {
case string:
o.Graph.AddMetadata(port, "BondMode", mode.(string))
}
}
// lacp
if lacp, ok := row.New.Fields["lacp"]; ok {
switch lacp.(type) {
case string:
o.Graph.AddMetadata(port, "LACP", lacp.(string))
}
}
// vlan tag
if tag, ok := row.New.Fields["tag"]; ok {
switch tag.(type) {
case libovsdb.OvsSet:
set := tag.(libovsdb.OvsSet)
if len(set.GoSet) > 0 {
o.Graph.AddMetadata(port, "Vlans", set.GoSet)
}
case float64:
o.Graph.AddMetadata(port, "Vlans", int(tag.(float64)))
}
}
switch row.New.Fields["interfaces"].(type) {
case libovsdb.OvsSet:
set := row.New.Fields["interfaces"].(libovsdb.OvsSet)
for _, i := range set.GoSet {
u := i.(libovsdb.UUID).GoUUID
intf, ok := o.uuidToIntf[u]
if ok && !o.Graph.AreLinked(port, intf) {
o.Graph.Link(port, intf, graph.Metadata{"RelationType": "layer2"})
} else {
/* will be filled later when the interface update for this interface will be triggered */
o.intfPortQueue[u] = port
}
}
case libovsdb.UUID:
u := row.New.Fields["interfaces"].(libovsdb.UUID).GoUUID
intf, ok := o.uuidToIntf[u]
if ok && !o.Graph.AreLinked(port, intf) {
o.Graph.Link(port, intf, graph.Metadata{"RelationType": "layer2"})
} else {
/* will be filled later when the interface update for this interface will be triggered */
o.intfPortQueue[u] = port
}
}
/* set pending port of a container */
if bridge, ok := o.portBridgeQueue[uuid]; ok {
o.Graph.Link(bridge, port, graph.Metadata{"RelationType": "layer2"})
delete(o.portBridgeQueue, uuid)
}
}
func (o *OvsdbProbe) OnOvsInterfaceAdd(monitor *ovsdb.OvsMonitor, uuid string, row *libovsdb.RowUpdate) {
o.Lock()
defer o.Unlock()
// NOTE(safchain) is it a workaround ???, seems that the interface is not fully set
switch row.New.Fields["ofport"].(type) {
case float64:
default:
return
}
var mac string
switch row.New.Fields["mac_in_use"].(type) {
case string:
mac = row.New.Fields["mac_in_use"].(string)
}
var index int64
if i, ok := row.New.Fields["ifindex"]; ok {
switch row.New.Fields["ifindex"].(type) {
case float64:
index = int64(i.(float64))
case libovsdb.OvsSet:
set := row.New.Fields["ifindex"].(libovsdb.OvsSet)
if len(set.GoSet) > 0 {
index = set.GoSet[0].(int64)
}
}
}
var driver string
if d, ok := row.New.Fields["status"].(libovsdb.OvsMap).GoMap["driver_name"]; ok {
driver = d.(string)
}
var itype string
if t, ok := row.New.Fields["type"]; ok {
itype = t.(string)
}
name := row.New.Fields["name"].(string)
o.Graph.Lock()
defer o.Graph.Unlock()
intf := o.Graph.LookupFirstNode(graph.Metadata{"UUID": uuid})
if intf == nil {
// added before by netlink ?
intf = o.Graph.LookupFirstNode(graph.Metadata{"Name": name, "Driver": "openvswitch"})
if intf != nil {
o.Graph.AddMetadata(intf, "UUID", uuid)
}
}
if intf == nil {
// didn't find with the UUID nor with the driver, try with index and/or mac
lm := graph.Metadata{"Name": name}
if index > 0 {
lm["IfIndex"] = index
}
if mac != "" {
lm["MAC"] = mac
}
if len(lm) > 1 {
intf = o.Graph.LookupFirstChild(o.Root, lm)
if intf != nil {
o.Graph.AddMetadata(intf, "UUID", uuid)
}
}
}
if intf == nil {
intf = o.Graph.NewNode(graph.GenID(), graph.Metadata{"Name": name, "UUID": uuid})
} else if index > 0 {
// the index can be added after the interface creation, during an update so
// we need to check whether a interface with the same index exists at the first level
// if this interface has no UUID it means that it has been added by NETLINK
// and this is the same interface thus replace one by the other to keep only
// one interface.
nodes := o.Graph.LookupChildren(o.Root, graph.Metadata{"Name": name, "IfIndex": index})
for _, node := range nodes {
if node.Metadata()["UUID"] != uuid {
m := node.Metadata()
m["UUID"] = uuid
intf = o.Graph.Replace(node, intf)
}
}
}
tr := o.Graph.StartMetadataTransaction(intf)
defer tr.Commit()
if index > 0 {
tr.AddMetadata("IfIndex", index)
}
if mac != "" {
tr.AddMetadata("MAC", mac)
}
if driver != "" {
tr.AddMetadata("Driver", driver)
}
if itype != "" {
tr.AddMetadata("Type", itype)
}
ext_ids := row.New.Fields["external_ids"].(libovsdb.OvsMap)
for k, v := range ext_ids.GoMap {
tr.AddMetadata("ExtID/"+k.(string), v.(string))
}
o.uuidToIntf[uuid] = intf
switch itype {
case "gre", "vxlan", "geneve":
tr.AddMetadata("Driver", "openvswitch")
m := row.New.Fields["options"].(libovsdb.OvsMap)
if ip, ok := m.GoMap["local_ip"]; ok {
tr.AddMetadata("LocalIP", ip.(string))
}
if ip, ok := m.GoMap["remote_ip"]; ok {
tr.AddMetadata("RemoteIP", ip.(string))
}
m = row.New.Fields["status"].(libovsdb.OvsMap)
if iface, ok := m.GoMap["tunnel_egress_iface"]; ok {
tr.AddMetadata("TunEgressIface", iface.(string))
}
if carrier, ok := m.GoMap["tunnel_egress_iface_carrier"]; ok {
tr.AddMetadata("TunEgressIfaceCarrier", carrier.(string))
}
case "patch":
// force the driver as it is not defined and we need it to delete properly
tr.AddMetadata("Driver", "openvswitch")
m := row.New.Fields["options"].(libovsdb.OvsMap)
if p, ok := m.GoMap["peer"]; ok {
peerName := p.(string)
peer := o.Graph.LookupFirstNode(graph.Metadata{"Name": peerName, "Type": "patch"})
if peer != nil {
if !o.Graph.AreLinked(intf, peer) {
o.Graph.Link(intf, peer, graph.Metadata{"RelationType": "layer2", "Type": "patch"})
}
} else {
// lookup in the intf queue
for _, peer := range o.uuidToIntf {
if peer.Metadata()["Name"] == peerName && !o.Graph.AreLinked(intf, peer) {
o.Graph.Link(intf, peer, graph.Metadata{"RelationType": "layer2", "Type": "patch"})
}
}
}
}
}
/* set pending interface for a port */
if port, ok := o.intfPortQueue[uuid]; ok {
o.Graph.Link(port, intf, graph.Metadata{"RelationType": "layer2"})
delete(o.intfPortQueue, uuid)
}
}
func (u *NetNSProbe) Register(path string, extraMetadata graph.Metadata) *graph.Node {
// When a new network namespace has been seen by inotify, the path to
// the namespace may still be a regular file, not a bind mount to the
// file in /proc/<pid>/tasks/<tid>/ns/net yet, so we wait a bit for the
// bind mount to be set up
var newns *NetNs
err := common.Retry(func() error {
var stats syscall.Stat_t
fd, err := syscall.Open(path, syscall.O_RDONLY, 0)
if err != nil {
return err
}
err = syscall.Fstat(fd, &stats)
syscall.Close(fd)
if err != nil {
return err
}
if stats.Dev != u.rootNsDev {
return fmt.Errorf("%s does not seem to be a valid namespace", path)
}
newns = &NetNs{path: path, dev: stats.Dev, ino: stats.Ino}
return nil
}, 10, time.Millisecond*20)
if err != nil {
logging.GetLogger().Errorf("Could not register namespace: %s", err.Error())
return nil
}
_, ok := u.pathToNetNS[path]
if !ok {
u.pathToNetNS[path] = newns
}
u.Lock()
defer u.Unlock()
nsString := newns.String()
probe, ok := u.nsnlProbes[nsString]
if ok {
probe.useCount++
logging.GetLogger().Debugf("Increasing counter for namespace %s to %d", nsString, probe.useCount)
return probe.Root
}
u.Graph.Lock()
defer u.Graph.Unlock()
logging.GetLogger().Debugf("Network Namespace added: %s", nsString)
metadata := graph.Metadata{"Name": getNetNSName(path), "Type": "netns", "Path": path}
if extraMetadata != nil {
for k, v := range extraMetadata {
metadata[k] = v
}
}
n := u.Graph.NewNode(graph.GenID(), metadata)
u.Graph.Link(u.Root, n, graph.Metadata{"RelationType": "ownership"})
nu := NewNetNsNetLinkTopoUpdater(u.Graph, n)
nu.Start(newns)
u.nsnlProbes[nsString] = nu
return n
}
