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Added support for network specific enable ipv6 label 

Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
This commit is contained in:
Jana Radhakrishnan 2015-05-06 06:41:20 +00:00
parent 94a9f12280
commit 3919b126a9
4 changed files with 122 additions and 9 deletions
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14
libnetwork/drivers/bridge/bridge.go
View File

@ -162,8 +162,8 @@ func (d *driver) Config(option map[string]interface{}) error {
return ErrConfigExists
}
genericData := option[netlabel.GenericData]
if genericData != nil {
genericData, ok := option[netlabel.GenericData]
if ok && genericData != nil {
switch opt := genericData.(type) {
case options.Generic:
opaqueConfig, err := options.GenerateFromModel(opt, &Configuration{})
@ -178,6 +178,8 @@ func (d *driver) Config(option map[string]interface{}) error {
}
d.config = config
} else {
config = &Configuration{}
}
if config.EnableIPForwarding {
@ -198,8 +200,8 @@ func (d *driver) getNetwork(id types.UUID) (*bridgeNetwork, error) {
func parseNetworkOptions(option options.Generic) (*NetworkConfiguration, error) {
var config *NetworkConfiguration
genericData := option[netlabel.GenericData]
if genericData != nil {
genericData, ok := option[netlabel.GenericData]
if ok && genericData != nil {
switch opt := genericData.(type) {
case options.Generic:
opaqueConfig, err := options.GenerateFromModel(opt, &NetworkConfiguration{})
@ -220,6 +222,10 @@ func parseNetworkOptions(option options.Generic) (*NetworkConfiguration, error)
config = &NetworkConfiguration{}
}
if _, ok := option[netlabel.EnableIPv6]; ok {
config.EnableIPv6 = option[netlabel.EnableIPv6].(bool)
}
return config, nil
}

2
libnetwork/endpoint.go
View File

@ -409,7 +409,7 @@ func (ep *endpoint) setupDNS() error {
}
// replace any localhost/127.* but always discard IPv6 entries for now.
resolvConf, _ = resolvconf.FilterResolvDns(resolvConf, false)
resolvConf, _ = resolvconf.FilterResolvDns(resolvConf, ep.network.enableIPv6)
return ioutil.WriteFile(ep.container.config.resolvConfPath, resolvConf, 0644)
}

110
libnetwork/libnetwork_test.go
View File

@ -1,6 +1,8 @@
package libnetwork_test
import (
"bytes"
"io/ioutil"
"net"
"os"
"testing"
@ -30,16 +32,13 @@ func createTestNetwork(networkType, networkName string, option options.Generic,
genericOption := make(map[string]interface{})
genericOption[netlabel.GenericData] = option
genericNetOption := make(map[string]interface{})
genericNetOption[netlabel.GenericData] = netOption
err := controller.ConfigureNetworkDriver(networkType, genericOption)
if err != nil {
return nil, err
}
network, err := controller.NewNetwork(networkType, networkName,
libnetwork.NetworkOptionGeneric(genericNetOption))
libnetwork.NetworkOptionGeneric(netOption))
if err != nil {
return nil, err
}
@ -775,3 +774,106 @@ func TestEndpointUpdateParent(t *testing.T) {
t.Fatal(err)
}
}
func TestEnableIPv6(t *testing.T) {
defer netutils.SetupTestNetNS(t)()
tmpResolvConf := []byte("search pommesfrites.fr\nnameserver 12.34.56.78\nnameserver 2001:4860:4860::8888")
//take a copy of resolv.conf for restoring after test completes
resolvConfSystem, err := ioutil.ReadFile("/etc/resolv.conf")
if err != nil {
t.Fatal(err)
}
//cleanup
defer func() {
if err := ioutil.WriteFile("/etc/resolv.conf", resolvConfSystem, 0644); err != nil {
t.Fatal(err)
}
}()
netOption := options.Generic{
netlabel.EnableIPv6: true,
}
n, err := createTestNetwork("bridge", "testnetwork", options.Generic{}, netOption)
if err != nil {
t.Fatal(err)
}
ep1, err := n.CreateEndpoint("ep1", nil)
if err != nil {
t.Fatal(err)
}
if err := ioutil.WriteFile("/etc/resolv.conf", tmpResolvConf, 0644); err != nil {
t.Fatal(err)
}
resolvConfPath := "/tmp/libnetwork_test/resolv.conf"
_, err = ep1.Join(containerID,
libnetwork.JoinOptionResolvConfPath(resolvConfPath))
content, err := ioutil.ReadFile(resolvConfPath)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(content, tmpResolvConf) {
t.Fatalf("Expected %s, Got %s", string(tmpResolvConf), string(content))
}
if err != nil {
t.Fatal(err)
}
}
func TestNoEnableIPv6(t *testing.T) {
defer netutils.SetupTestNetNS(t)()
tmpResolvConf := []byte("search pommesfrites.fr\nnameserver 12.34.56.78\nnameserver 2001:4860:4860::8888")
expectedResolvConf := []byte("search pommesfrites.fr\nnameserver 12.34.56.78\n")
//take a copy of resolv.conf for restoring after test completes
resolvConfSystem, err := ioutil.ReadFile("/etc/resolv.conf")
if err != nil {
t.Fatal(err)
}
//cleanup
defer func() {
if err := ioutil.WriteFile("/etc/resolv.conf", resolvConfSystem, 0644); err != nil {
t.Fatal(err)
}
}()
n, err := createTestNetwork("bridge", "testnetwork", options.Generic{}, options.Generic{})
if err != nil {
t.Fatal(err)
}
ep1, err := n.CreateEndpoint("ep1", nil)
if err != nil {
t.Fatal(err)
}
if err := ioutil.WriteFile("/etc/resolv.conf", tmpResolvConf, 0644); err != nil {
t.Fatal(err)
}
resolvConfPath := "/tmp/libnetwork_test/resolv.conf"
_, err = ep1.Join(containerID,
libnetwork.JoinOptionResolvConfPath(resolvConfPath))
content, err := ioutil.ReadFile(resolvConfPath)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(content, expectedResolvConf) {
t.Fatalf("Expected %s, Got %s", string(expectedResolvConf), string(content))
}
if err != nil {
t.Fatal(err)
}
}

5
libnetwork/network.go
View File

@ -5,6 +5,7 @@ import (
"github.com/docker/docker/pkg/stringid"
"github.com/docker/libnetwork/driverapi"
"github.com/docker/libnetwork/pkg/netlabel"
"github.com/docker/libnetwork/pkg/options"
"github.com/docker/libnetwork/types"
)
@ -52,6 +53,7 @@ type network struct {
networkType string
id types.UUID
driver driverapi.Driver
enableIPv6 bool
endpoints endpointTable
generic options.Generic
sync.Mutex
@ -83,6 +85,9 @@ type NetworkOption func(n *network)
func NetworkOptionGeneric(generic map[string]interface{}) NetworkOption {
return func(n *network) {
n.generic = generic
if _, ok := generic[netlabel.EnableIPv6]; ok {
n.enableIPv6 = generic[netlabel.EnableIPv6].(bool)
}
}
}