// commit all transactions to ovsdb-server
func (transaction *Transaction) Commit() ([]libovsdb.OperationResult, error) {
// iterate over all transactions and create operations
operations := make([]libovsdb.Operation, len(transactions))
for count, row := range transactions {
if row.operation == DELETE {
operations[count] = libovsdb.Operation{
Op: DELETE,
Table: row.Table,
Where: []interface{}{libovsdb.NewCondition("_uuid", "==",
libovsdb.UUID{GoUUID: row.UUID})}}
} else if row.operation == INSERT {
operations[count] = libovsdb.Operation{
Op: INSERT,
Table: row.Table,
Row: row.changes,
UUIDName: UuidToUuidName(row.UUID)}
} else if row.operation == UPDATE {
operations[count] = libovsdb.Operation{
Op: UPDATE,
Table: row.Table,
Row: row.changes,
Where: []interface{}{libovsdb.NewCondition("_uuid", "==",
libovsdb.UUID{GoUUID: row.UUID})}}
}
}
result, err := transaction.Ovs.Transact(transaction.Db.Name, operations...)
return result, err
}
func (o *OvsSFlowProbesHandler) UnregisterSFlowProbeFromBridge(bridgeUUID string) error {
probeUUID, err := o.retrieveSFlowProbeUUID(probeID(bridgeUUID))
if err != nil {
return err
}
if probeUUID == "" {
return nil
}
operations := []libovsdb.Operation{}
bridgeRow := make(map[string]interface{})
bridgeRow["sflow"] = libovsdb.OvsSet{make([]interface{}, 0)}
condition := libovsdb.NewCondition("_uuid", "==", libovsdb.UUID{bridgeUUID})
updateOp := libovsdb.Operation{
Op: "update",
Table: "Bridge",
Row: bridgeRow,
Where: []interface{}{condition},
}
operations = append(operations, updateOp)
_, err = o.ovsClient.Exec(operations...)
if err != nil {
return err
}
return nil
}
func (o *OvsSFlowProbesHandler) retrieveSFlowProbeUUID(id string) (string, error) {
/* FIX(safchain) don't find a way to send a null condition */
condition := libovsdb.NewCondition("_uuid", "!=", libovsdb.UUID{"abc"})
selectOp := libovsdb.Operation{
Op: "select",
Table: "sFlow",
Where: []interface{}{condition},
}
operations := []libovsdb.Operation{selectOp}
result, err := o.ovsClient.Exec(operations...)
if err != nil {
return "", err
}
for _, o := range result {
for _, row := range o.Rows {
u := row["_uuid"].([]interface{})[1]
uuid := u.(string)
if ok, _ := compareProbeID(&row, id); ok {
return uuid, nil
}
}
}
return "", nil
}
func (ovsdber *ovsdber) deletePort(bridgeName string, portName string) error {
condition := libovsdb.NewCondition("name", "==", portName)
deleteOp := libovsdb.Operation{
Op: "delete",
Table: "Port",
Where: []interface{}{condition},
}
portUUID := portUUIDForName(portName)
if portUUID == "" {
log.Error("Unable to find a matching Port : ", portName)
return fmt.Errorf("Unable to find a matching Port : [ %s ]", portName)
}
// Deleting a Bridge row in Bridge table requires mutating the open_vswitch table.
mutateUUID := []libovsdb.UUID{libovsdb.UUID{portUUID}}
mutateSet, _ := libovsdb.NewOvsSet(mutateUUID)
mutation := libovsdb.NewMutation("ports", "delete", mutateSet)
condition = libovsdb.NewCondition("name", "==", bridgeName)
// simple mutate operation
mutateOp := libovsdb.Operation{
Op: "mutate",
Table: "Bridge",
Mutations: []interface{}{mutation},
Where: []interface{}{condition},
}
operations := []libovsdb.Operation{deleteOp, mutateOp}
reply, _ := ovsdber.ovsdb.Transact("Open_vSwitch", operations...)
if len(reply) < len(operations) {
log.Error("Number of Replies should be atleast equal to number of Operations")
return fmt.Errorf("Number of Replies should be atleast equal to number of Operations")
}
for i, o := range reply {
if o.Error != "" && i < len(operations) {
log.Error("Transaction Failed due to an error :", o.Error, " in ", operations[i])
return fmt.Errorf("Transaction Failed due to an error: %s in %v", o.Error, operations[i])
} else if o.Error != "" {
log.Error("Transaction Failed due to an error :", o.Error)
return fmt.Errorf("Transaction Failed due to an error %s", o.Error)
}
}
return nil
}
// Silently fails :/
func (ovsdber *ovsdber) addOvsVethPort(bridgeName string, portName string, tag uint) error {
namedPortUUID := "port"
namedIntfUUID := "intf"
// intf row to insert
intf := make(map[string]interface{})
intf["name"] = portName
intf["type"] = `system`
insertIntfOp := libovsdb.Operation{
Op: "insert",
Table: "Interface",
Row: intf,
UUIDName: namedIntfUUID,
}
// port row to insert
port := make(map[string]interface{})
port["name"] = portName
port["interfaces"] = libovsdb.UUID{namedIntfUUID}
insertPortOp := libovsdb.Operation{
Op: "insert",
Table: "Port",
Row: port,
UUIDName: namedPortUUID,
}
// Inserting a row in Port table requires mutating the bridge table.
mutateUUID := []libovsdb.UUID{libovsdb.UUID{namedPortUUID}}
mutateSet, _ := libovsdb.NewOvsSet(mutateUUID)
mutation := libovsdb.NewMutation("ports", "insert", mutateSet)
condition := libovsdb.NewCondition("name", "==", bridgeName)
// Mutate operation
mutateOp := libovsdb.Operation{
Op: "mutate",
Table: "Bridge",
Mutations: []interface{}{mutation},
Where: []interface{}{condition},
}
operations := []libovsdb.Operation{insertIntfOp, insertPortOp, mutateOp}
reply, _ := ovsdber.ovsdb.Transact("Open_vSwitch", operations...)
if len(reply) < len(operations) {
log.Error("Number of Replies should be atleast equal to number of Operations")
}
for i, o := range reply {
if o.Error != "" && i < len(operations) {
msg := fmt.Sprintf("Transaction Failed due to an error ]", o.Error, " details:", o.Details, " in ", operations[i])
return errors.New(msg)
} else if o.Error != "" {
msg := fmt.Sprintf("Transaction Failed due to an error :", o.Error)
return errors.New(msg)
}
}
return nil
}
func (ovsdber *ovsdber) addVxlanPort(bridgeName string, portName string, peerAddress string) {
namedPortUUID := "port"
namedIntfUUID := "intf"
options := make(map[string]interface{})
options["remote_ip"] = peerAddress
// intf row to insert
intf := make(map[string]interface{})
intf["name"] = portName
intf["type"] = `vxlan`
intf["options"], _ = libovsdb.NewOvsMap(options)
insertIntfOp := libovsdb.Operation{
Op: "insert",
Table: "Interface",
Row: intf,
UUIDName: namedIntfUUID,
}
// port row to insert
port := make(map[string]interface{})
port["name"] = portName
port["interfaces"] = libovsdb.UUID{namedIntfUUID}
insertPortOp := libovsdb.Operation{
Op: "insert",
Table: "Port",
Row: port,
UUIDName: namedPortUUID,
}
// Inserting a row in Port table requires mutating the bridge table.
mutateUUID := []libovsdb.UUID{libovsdb.UUID{namedPortUUID}}
mutateSet, _ := libovsdb.NewOvsSet(mutateUUID)
mutation := libovsdb.NewMutation("ports", "insert", mutateSet)
condition := libovsdb.NewCondition("name", "==", bridgeName)
// simple mutate operation
mutateOp := libovsdb.Operation{
Op: "mutate",
Table: "Bridge",
Mutations: []interface{}{mutation},
Where: []interface{}{condition},
}
operations := []libovsdb.Operation{insertIntfOp, insertPortOp, mutateOp}
reply, _ := ovsdber.ovsdb.Transact("Open_vSwitch", operations...)
if len(reply) < len(operations) {
fmt.Println("Number of Replies should be atleast equal to number of Operations")
}
for i, o := range reply {
if o.Error != "" && i < len(operations) {
fmt.Println("Transaction Failed due to an error :", o.Error, " details:", o.Details, " in ", operations[i])
} else if o.Error != "" {
fmt.Println("Transaction Failed due to an error :", o.Error)
}
}
}
func deleteRoute(opsRoute map[string]interface{}) ovsdb.Operation {
condition := ovsdb.NewCondition("prefix", "==", opsRoute["prefix"])
deleteOp := ovsdb.Operation{
Op: "delete",
Table: "BGP_Route",
Where: []interface{}{condition},
}
return deleteOp
}
// 'value' is normally a string, except under special conditions, upon which
// this function should recognize them and deal with it appropriately
func newCondition(column, function string, value interface{}) condition {
if column == "_uuid" {
switch t := value.(type) {
case ovs.UUID:
return ovs.NewCondition(column, function, value)
case string:
return ovs.NewCondition(column, function,
ovs.UUID{GoUUID: value.(string)})
default:
log.WithFields(log.Fields{
"value": value,
"type": t,
}).Error("invalid type for value in condition")
return nil
}
}
return ovs.NewCondition(column, function, value)
}
func createBridge(ovs *libovsdb.OvsdbClient, bridgeName string) {
namedUuid := "gopher"
// bridge row to insert
bridge := make(map[string]interface{})
bridge["name"] = bridgeName
// simple insert operation
insertOp := libovsdb.Operation{
Op: "insert",
Table: "Bridge",
Row: bridge,
UUIDName: namedUuid,
}
// Inserting a Bridge row in Bridge table requires mutating the open_vswitch table.
mutateUuid := []libovsdb.UUID{libovsdb.UUID{namedUuid}}
mutateSet, _ := libovsdb.NewOvsSet(mutateUuid)
mutation := libovsdb.NewMutation("bridges", "insert", mutateSet)
condition := libovsdb.NewCondition("_uuid", "==", libovsdb.UUID{getRootUuid()})
// simple mutate operation
mutateOp := libovsdb.Operation{
Op: "mutate",
Table: "Open_vSwitch",
Mutations: []interface{}{mutation},
Where: []interface{}{condition},
}
operations := []libovsdb.Operation{insertOp, mutateOp}
reply, _ := ovs.Transact("Open_vSwitch", operations...)
if len(reply) < len(operations) {
fmt.Println("Number of Replies should be atleast equal to number of Operations")
}
ok := true
for i, o := range reply {
if o.Error != "" && i < len(operations) {
fmt.Println("Transaction Failed due to an error :", o.Error, " details:", o.Details, " in ", operations[i])
ok = false
} else if o.Error != "" {
fmt.Println("Transaction Failed due to an error :", o.Error)
ok = false
}
}
if ok {
fmt.Println("Bridge Addition Successful : ", reply[0].UUID.GoUuid)
}
}
func (o *OvsSFlowProbesHandler) retrieveSFlowProbeUUID(monitor *ovsdb.OvsMonitor, probe OvsSFlowProbe) (string, error) {
/* FIX(safchain) don't find a way to send a null condition */
condition := libovsdb.NewCondition("_uuid", "!=", libovsdb.UUID{"abc"})
selectOp := libovsdb.Operation{
Op: "select",
Table: "sFlow",
Where: []interface{}{condition},
}
operations := []libovsdb.Operation{selectOp}
result, err := monitor.OvsClient.Exec(operations...)
if err != nil {
return "", err
}
for _, o := range result {
for _, row := range o.Rows {
u := row["_uuid"].([]interface{})[1]
uuid := u.(string)
if targets, ok := row["targets"]; ok {
if targets != probe.Target {
continue
}
}
if polling, ok := row["polling"]; ok {
if uint32(polling.(float64)) != probe.Polling {
continue
}
}
if sampling, ok := row["sampling"]; ok {
if uint32(sampling.(float64)) != probe.Sampling {
continue
}
}
if ok, _ := compareProbeID(&row, probe); ok {
return uuid, nil
}
}
}
return "", nil
}
// deleteBridge deletes the OVS bridge
func (ovsdber *ovsdber) deleteBridge(bridgeName string) error {
namedBridgeUUID := "bridge"
// simple delete operation
condition := libovsdb.NewCondition("name", "==", bridgeName)
deleteOp := libovsdb.Operation{
Op: "delete",
Table: "Bridge",
Where: []interface{}{condition},
}
// Deleting a Bridge row in Bridge table requires mutating the open_vswitch table.
mutateUUID := []libovsdb.UUID{libovsdb.UUID{namedBridgeUUID}}
mutateSet, _ := libovsdb.NewOvsSet(mutateUUID)
mutation := libovsdb.NewMutation("bridges", "delete", mutateSet)
// simple mutate operation
mutateOp := libovsdb.Operation{
Op: "mutate",
Table: "Open_vSwitch",
Mutations: []interface{}{mutation},
Where: []interface{}{condition},
}
operations := []libovsdb.Operation{deleteOp, mutateOp}
reply, _ := ovsdber.ovsdb.Transact("Open_vSwitch", operations...)
if len(reply) < len(operations) {
log.Error("Number of Replies should be atleast equal to number of Operations")
}
for i, o := range reply {
if o.Error != "" && i < len(operations) {
log.Error("Transaction Failed due to an error :", o.Error, " in ", operations[i])
errMsg := fmt.Sprintf("Transaction Failed due to an error: %s in operation: %v", o.Error, operations[i])
return errors.New(errMsg)
} else if o.Error != "" {
errMsg := fmt.Sprintf("Transaction Failed due to an error : %s", o.Error)
return errors.New(errMsg)
}
}
log.Debugf("OVSDB delete bridge transaction succesful")
return nil
}
func (o *OvsSFlowProbesHandler) registerSFlowProbeOnBridge(probe OvsSFlowProbe, bridgeUUID string) error {
probeUUID, err := o.retrieveSFlowProbeUUID(probeID(bridgeUUID))
if err != nil {
return err
}
operations := []libovsdb.Operation{}
var uuid libovsdb.UUID
if probeUUID != "" {
uuid = libovsdb.UUID{probeUUID}
logging.GetLogger().Infof("Using already registered OVS SFlow probe \"%s(%s)\"", probe.ID, uuid)
} else {
insertOp, err := newInsertSFlowProbeOP(probe)
if err != nil {
return err
}
uuid = libovsdb.UUID{insertOp.UUIDName}
logging.GetLogger().Infof("Registering new OVS SFlow probe \"%s(%s)\"", probe.ID, uuid)
operations = append(operations, *insertOp)
}
bridgeRow := make(map[string]interface{})
bridgeRow["sflow"] = uuid
condition := libovsdb.NewCondition("_uuid", "==", libovsdb.UUID{bridgeUUID})
updateOp := libovsdb.Operation{
Op: "update",
Table: "Bridge",
Row: bridgeRow,
Where: []interface{}{condition},
}
operations = append(operations, updateOp)
_, err = o.ovsClient.Exec(operations...)
if err != nil {
return err
}
return nil
}
func (o *OvsSFlowAgentsHandler) registerSFLowAgent(monitor *OvsMonitor, agent SFlowAgent, bridgeUUID string) error {
agentUUID, err := o.retrieveSFlowAgentUUID(monitor, agent)
if err != nil {
return err
}
operations := []libovsdb.Operation{}
var uuid libovsdb.UUID
if agentUUID != "" {
uuid = libovsdb.UUID{agentUUID}
logging.GetLogger().Info("Using already registered sFlow agent \"%s(%s)\"", agent.ID, uuid)
} else {
insertOp, err := newInsertSFlowAgentOP(agent)
if err != nil {
return err
}
uuid = libovsdb.UUID{insertOp.UUIDName}
logging.GetLogger().Info("Registering new sFlow agent \"%s(%s)\"", agent.ID, uuid)
operations = append(operations, *insertOp)
}
bridgeRow := make(map[string]interface{})
bridgeRow["sflow"] = uuid
condition := libovsdb.NewCondition("_uuid", "==", libovsdb.UUID{bridgeUUID})
updateOp := libovsdb.Operation{
Op: "update",
Table: "Bridge",
Row: bridgeRow,
Where: []interface{}{condition},
}
operations = append(operations, updateOp)
_, err = monitor.OvsClient.Exec(operations...)
if err != nil {
return err
}
return nil
}
func (ovsdber *ovsdber) portExists(portName string) (bool, error) {
condition := libovsdb.NewCondition("name", "==", portName)
selectOp := libovsdb.Operation{
Op: "select",
Table: "Port",
Where: []interface{}{condition},
}
operations := []libovsdb.Operation{selectOp}
reply, _ := ovsdber.ovsdb.Transact("Open_vSwitch", operations...)
if len(reply) < len(operations) {
return false, errors.New("Number of Replies should be atleast equal to number of Operations")
}
if reply[0].Error != "" {
errMsg := fmt.Sprintf("Transaction Failed due to an error: %v", reply[0].Error)
return false, errors.New(errMsg)
}
if len(reply[0].Rows) == 0 {
return false, nil
}
return true, nil
}
// createOvsdbBridge creates the OVS bridge
func (ovsdber *ovsdber) createOvsdbBridge(bridgeName string) error {
namedBridgeUUID := "bridge"
namedPortUUID := "port"
namedIntfUUID := "intf"
// intf row to insert
intf := make(map[string]interface{})
intf["name"] = bridgeName
intf["type"] = `internal`
insertIntfOp := libovsdb.Operation{
Op: "insert",
Table: "Interface",
Row: intf,
UUIDName: namedIntfUUID,
}
// Port row to insert
port := make(map[string]interface{})
port["name"] = bridgeName
port["interfaces"] = libovsdb.UUID{namedIntfUUID}
insertPortOp := libovsdb.Operation{
Op: "insert",
Table: "Port",
Row: port,
UUIDName: namedPortUUID,
}
// Bridge row to insert
bridge := make(map[string]interface{})
bridge["name"] = bridgeName
bridge["stp_enable"] = false
bridge["ports"] = libovsdb.UUID{namedPortUUID}
insertBridgeOp := libovsdb.Operation{
Op: "insert",
Table: "Bridge",
Row: bridge,
UUIDName: namedBridgeUUID,
}
// Inserting a Bridge row in Bridge table requires mutating the open_vswitch table.
mutateUUID := []libovsdb.UUID{libovsdb.UUID{namedBridgeUUID}}
mutateSet, _ := libovsdb.NewOvsSet(mutateUUID)
mutation := libovsdb.NewMutation("bridges", "insert", mutateSet)
condition := libovsdb.NewCondition("_uuid", "==", libovsdb.UUID{ovsdber.getRootUUID()})
// Mutate operation
mutateOp := libovsdb.Operation{
Op: "mutate",
Table: "Open_vSwitch",
Mutations: []interface{}{mutation},
Where: []interface{}{condition},
}
operations := []libovsdb.Operation{insertIntfOp, insertPortOp, insertBridgeOp, mutateOp}
reply, _ := ovsdber.ovsdb.Transact("Open_vSwitch", operations...)
if len(reply) < len(operations) {
return errors.New("Number of Replies should be atleast equal to number of Operations")
}
for i, o := range reply {
if o.Error != "" && i < len(operations) {
return errors.New("Transaction Failed due to an error :" + o.Error + " details : " + o.Details)
} else if o.Error != "" {
return errors.New("Transaction Failed due to an error :" + o.Error + " details : " + o.Details)
}
}
return nil
}
// Base on RFC 7047, empty condition should return all rows from a table. However,
// libovsdb does not seem to support that yet. This is the simplist, most common solution
// to it.
func noCondition() []interface{} {
return []interface{}{ovs.NewCondition("_uuid", "!=", ovs.UUID{GoUUID: "_"})}
}
func newCondition(column, function string, value interface{}) []interface{} {
return []interface{}{ovs.NewCondition(column, function, value)}
}
