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Refactor driverapi, sandbox pkgs 

- Move SanboxInfo and Interface structures in sandbox package
  (changed it to Info as per golint)
- Move UUID to new internal pkg types
- Updated .gitignore to ignore IDE project files

Signed-off-by: Alessandro Boch <aboch@docker.com>
This commit is contained in:
Alessandro Boch 2015-04-20 08:44:06 -07:00
parent dcbb4c9928
commit 7d24e974cf
10 changed files with 233 additions and 229 deletions
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3
libnetwork/.gitignore vendored
View File

@ -26,3 +26,6 @@ _testmain.go
# Coverage
*.tmp
*.coverprofile
# IDE files
.project

132
libnetwork/driverapi/driverapi.go
View File

@ -2,9 +2,9 @@ package driverapi
import (
"errors"
"net"
"github.com/docker/libnetwork/netutils"
"github.com/docker/libnetwork/sandbox"
"github.com/docker/libnetwork/types"
)
var (
@ -16,9 +16,6 @@ var (
ErrNoEndpoint = errors.New("No endpoint exists")
)
// UUID represents a globally unique ID of various resources like network and endpoint
type UUID string
// Driver is an interface that every plugin driver needs to implement.
type Driver interface {
// Push driver specific config to the driver
@ -27,136 +24,19 @@ type Driver interface {
// CreateNetwork invokes the driver method to create a network passing
// the network id and network specific config. The config mechanism will
// eventually be replaced with labels which are yet to be introduced.
CreateNetwork(nid UUID, config interface{}) error
CreateNetwork(nid types.UUID, config interface{}) error
// DeleteNetwork invokes the driver method to delete network passing
// the network id.
DeleteNetwork(nid UUID) error
DeleteNetwork(nid types.UUID) error
// CreateEndpoint invokes the driver method to create an endpoint
// passing the network id, endpoint id, sandbox key and driver
// specific config. The config mechanism will eventually be replaced
// with labels which are yet to be introduced.
CreateEndpoint(nid, eid UUID, key string, config interface{}) (*SandboxInfo, error)
CreateEndpoint(nid, eid types.UUID, key string, config interface{}) (*sandbox.Info, error)
// DeleteEndpoint invokes the driver method to delete an endpoint
// passing the network id and endpoint id.
DeleteEndpoint(nid, eid UUID) error
}
// Interface represents the settings and identity of a network device. It is
// used as a return type for Network.Link, and it is common practice for the
// caller to use this information when moving interface SrcName from host
// namespace to DstName in a different net namespace with the appropriate
// network settings.
type Interface struct {
// The name of the interface in the origin network namespace.
SrcName string
// The name that will be assigned to the interface once moves inside a
// network namespace.
DstName string
// IPv4 address for the interface.
Address *net.IPNet
// IPv6 address for the interface.
AddressIPv6 *net.IPNet
}
// SandboxInfo represents all possible information that
// the driver wants to place in the sandbox which includes
// interfaces, routes and gateway
type SandboxInfo struct {
Interfaces []*Interface
// IPv4 gateway for the sandbox.
Gateway net.IP
// IPv6 gateway for the sandbox.
GatewayIPv6 net.IP
// TODO: Add routes and ip tables etc.
}
// GetCopy returns a copy of this Interface structure
func (i *Interface) GetCopy() *Interface {
return &Interface{
SrcName: i.SrcName,
DstName: i.DstName,
Address: netutils.GetIPNetCopy(i.Address),
AddressIPv6: netutils.GetIPNetCopy(i.AddressIPv6),
}
}
// Equal checks if this instance of Interface is equal to the passed one
func (i *Interface) Equal(o *Interface) bool {
if i == o {
return true
}
if o == nil {
return false
}
if i.SrcName != o.SrcName || i.DstName != o.DstName {
return false
}
if !netutils.CompareIPNet(i.Address, o.Address) {
return false
}
if !netutils.CompareIPNet(i.AddressIPv6, o.AddressIPv6) {
return false
}
return true
}
// GetCopy returns a copy of this SandboxInfo structure
func (s *SandboxInfo) GetCopy() *SandboxInfo {
list := make([]*Interface, len(s.Interfaces))
for i, iface := range s.Interfaces {
list[i] = iface.GetCopy()
}
gw := netutils.GetIPCopy(s.Gateway)
gw6 := netutils.GetIPCopy(s.GatewayIPv6)
return &SandboxInfo{Interfaces: list, Gateway: gw, GatewayIPv6: gw6}
}
// Equal checks if this instance of SandboxInfo is equal to the passed one
func (s *SandboxInfo) Equal(o *SandboxInfo) bool {
if s == o {
return true
}
if o == nil {
return false
}
if !s.Gateway.Equal(o.Gateway) {
return false
}
if !s.GatewayIPv6.Equal(o.GatewayIPv6) {
return false
}
if (s.Interfaces == nil && o.Interfaces != nil) ||
(s.Interfaces != nil && o.Interfaces == nil) ||
(len(s.Interfaces) != len(o.Interfaces)) {
return false
}
// Note: At the moment, the two lists must be in the same order
for i := 0; i < len(s.Interfaces); i++ {
if !s.Interfaces[i].Equal(o.Interfaces[i]) {
return false
}
}
return true
DeleteEndpoint(nid, eid types.UUID) error
}

71
libnetwork/driverapi/driverapi_test.go
View File

@ -1,71 +0,0 @@
package driverapi
import (
"net"
"testing"
)
func TestInterfaceEqual(t *testing.T) {
list := getInterfaceList()
if !list[0].Equal(list[0]) {
t.Fatalf("Interface.Equal() returned false negative")
}
if list[0].Equal(list[1]) {
t.Fatalf("Interface.Equal() returned false positive")
}
if list[0].Equal(list[1]) != list[1].Equal(list[0]) {
t.Fatalf("Interface.Equal() failed commutative check")
}
}
func TestInterfaceCopy(t *testing.T) {
for _, iface := range getInterfaceList() {
cp := iface.GetCopy()
if !iface.Equal(cp) {
t.Fatalf("Failed to return a copy of Interface")
}
if iface == cp {
t.Fatalf("Failed to return a true copy of Interface")
}
}
}
func TestSandboxInfoCopy(t *testing.T) {
si := SandboxInfo{Interfaces: getInterfaceList(), Gateway: net.ParseIP("192.168.1.254"), GatewayIPv6: net.ParseIP("2001:2345::abcd:8889")}
cp := si.GetCopy()
if !si.Equal(cp) {
t.Fatalf("Failed to return a copy of SandboxInfo")
}
if &si == cp {
t.Fatalf("Failed to return a true copy of SanboxInfo")
}
}
func getInterfaceList() []*Interface {
_, netv4a, _ := net.ParseCIDR("192.168.30.1/24")
_, netv4b, _ := net.ParseCIDR("172.18.255.2/23")
_, netv6a, _ := net.ParseCIDR("2001:2345::abcd:8888/80")
_, netv6b, _ := net.ParseCIDR("2001:2345::abcd:8889/80")
return []*Interface{
&Interface{
SrcName: "veth1234567",
DstName: "eth0",
Address: netv4a,
AddressIPv6: netv6a,
},
&Interface{
SrcName: "veth7654321",
DstName: "eth1",
Address: netv4b,
AddressIPv6: netv6b,
},
}
}

20
libnetwork/drivers/bridge/bridge.go
View File

@ -10,6 +10,8 @@ import (
"github.com/docker/libnetwork/netutils"
"github.com/docker/libnetwork/pkg/options"
"github.com/docker/libnetwork/portmapper"
"github.com/docker/libnetwork/sandbox"
"github.com/docker/libnetwork/types"
"github.com/vishvananda/netlink"
)
@ -40,13 +42,13 @@ type Configuration struct {
}
type bridgeEndpoint struct {
id driverapi.UUID
id types.UUID
addressIPv4 net.IP
addressIPv6 net.IP
}
type bridgeNetwork struct {
id driverapi.UUID
id types.UUID
// bridge interface points to the linux bridge and it's configuration
bridge *bridgeInterface
endpoint *bridgeEndpoint
@ -95,7 +97,7 @@ func (d *driver) Config(option interface{}) error {
}
// Create a new network using simplebridge plugin
func (d *driver) CreateNetwork(id driverapi.UUID, option interface{}) error {
func (d *driver) CreateNetwork(id types.UUID, option interface{}) error {
var (
err error
@ -178,7 +180,7 @@ func (d *driver) CreateNetwork(id driverapi.UUID, option interface{}) error {
return nil
}
func (d *driver) DeleteNetwork(nid driverapi.UUID) error {
func (d *driver) DeleteNetwork(nid types.UUID) error {
var err error
d.Lock()
n := d.network
@ -211,7 +213,7 @@ func (d *driver) DeleteNetwork(nid driverapi.UUID) error {
return err
}
func (d *driver) CreateEndpoint(nid, eid driverapi.UUID, sboxKey string, epOption interface{}) (*driverapi.SandboxInfo, error) {
func (d *driver) CreateEndpoint(nid, eid types.UUID, sboxKey string, epOption interface{}) (*sandbox.Info, error) {
var (
ipv6Addr *net.IPNet
ip6 net.IP
@ -303,10 +305,10 @@ func (d *driver) CreateEndpoint(nid, eid driverapi.UUID, sboxKey string, epOptio
ipv6Addr = &net.IPNet{IP: ip6, Mask: n.bridge.bridgeIPv6.Mask}
}
var interfaces []*driverapi.Interface
sinfo := &driverapi.SandboxInfo{}
var interfaces []*sandbox.Interface
sinfo := &sandbox.Info{}
intf := &driverapi.Interface{}
intf := &sandbox.Interface{}
intf.SrcName = name2
intf.DstName = containerVeth
intf.Address = ipv4Addr
@ -323,7 +325,7 @@ func (d *driver) CreateEndpoint(nid, eid driverapi.UUID, sboxKey string, epOptio
return sinfo, nil
}
func (d *driver) DeleteEndpoint(nid, eid driverapi.UUID) error {
func (d *driver) DeleteEndpoint(nid, eid types.UUID) error {
var err error
d.Lock()

20
libnetwork/network.go
View File

@ -43,6 +43,8 @@ import (
"github.com/docker/docker/pkg/stringid"
"github.com/docker/libnetwork/driverapi"
"github.com/docker/libnetwork/sandbox"
"github.com/docker/libnetwork/types"
)
// NetworkController provides the interface for controller instance which manages
@ -91,7 +93,7 @@ type Endpoint interface {
Network() string
// SandboxInfo returns the sandbox information for this endpoint.
SandboxInfo() *driverapi.SandboxInfo
SandboxInfo() *sandbox.Info
// Delete and detaches this endpoint from the network.
Delete() error
@ -105,23 +107,23 @@ type NetworkDriver struct {
type endpoint struct {
name string
id driverapi.UUID
id types.UUID
network *network
sandboxInfo *driverapi.SandboxInfo
sandboxInfo *sandbox.Info
}
type network struct {
ctrlr *controller
name string
networkType string
id driverapi.UUID
id types.UUID
driver *NetworkDriver
endpoints endpointTable
sync.Mutex
}
type networkTable map[driverapi.UUID]*network
type endpointTable map[driverapi.UUID]*endpoint
type networkTable map[types.UUID]*network
type endpointTable map[types.UUID]*endpoint
type controller struct {
networks networkTable
@ -165,7 +167,7 @@ func (c *controller) NewNetwork(nd *NetworkDriver, name string, options interfac
network := &network{
name: name,
id: driverapi.UUID(stringid.GenerateRandomID()),
id: types.UUID(stringid.GenerateRandomID()),
ctrlr: c,
driver: nd}
network.endpoints = make(endpointTable)
@ -237,7 +239,7 @@ func (n *network) Delete() error {
func (n *network) CreateEndpoint(name string, sboxKey string, options interface{}) (Endpoint, error) {
ep := &endpoint{name: name}
ep.id = driverapi.UUID(stringid.GenerateRandomID())
ep.id = types.UUID(stringid.GenerateRandomID())
ep.network = n
d := n.driver.internalDriver
@ -280,7 +282,7 @@ func (ep *endpoint) Network() string {
return ep.network.name
}
func (ep *endpoint) SandboxInfo() *driverapi.SandboxInfo {
func (ep *endpoint) SandboxInfo() *sandbox.Info {
if ep.sandboxInfo == nil {
return nil
}

11
libnetwork/sandbox/configure_linux.go
View File

@ -4,14 +4,13 @@ import (
"fmt"
"net"
"github.com/docker/libnetwork/driverapi"
"github.com/vishvananda/netlink"
)
func configureInterface(iface netlink.Link, settings *driverapi.Interface) error {
func configureInterface(iface netlink.Link, settings *Interface) error {
ifaceName := iface.Attrs().Name
ifaceConfigurators := []struct {
Fn func(netlink.Link, *driverapi.Interface) error
Fn func(netlink.Link, *Interface) error
ErrMessage string
}{
{setInterfaceName, fmt.Sprintf("error renaming interface %q to %q", ifaceName, settings.DstName)},
@ -34,16 +33,16 @@ func setGatewayIP(gw net.IP) error {
})
}
func setInterfaceIP(iface netlink.Link, settings *driverapi.Interface) error {
func setInterfaceIP(iface netlink.Link, settings *Interface) error {
ipAddr := &netlink.Addr{IPNet: settings.Address, Label: ""}
return netlink.AddrAdd(iface, ipAddr)
}
func setInterfaceIPv6(iface netlink.Link, settings *driverapi.Interface) error {
func setInterfaceIPv6(iface netlink.Link, settings *Interface) error {
ipAddr := &netlink.Addr{IPNet: settings.Address, Label: ""}
return netlink.AddrAdd(iface, ipAddr)
}
func setInterfaceName(iface netlink.Link, settings *driverapi.Interface) error {
func setInterfaceName(iface netlink.Link, settings *Interface) error {
return netlink.LinkSetName(iface, settings.DstName)
}

7
libnetwork/sandbox/namespace_linux.go
View File

@ -7,7 +7,6 @@ import (
"runtime"
"syscall"
"github.com/docker/libnetwork/driverapi"
"github.com/vishvananda/netlink"
"github.com/vishvananda/netns"
)
@ -17,7 +16,7 @@ import (
// into it when called on method AddInterface or sets the gateway etc.
type networkNamespace struct {
path string
sinfo *driverapi.SandboxInfo
sinfo *Info
}
// NewSandbox provides a new sandbox instance created in an os specific way
@ -74,7 +73,7 @@ func loopbackUp() error {
return netlink.LinkSetUp(iface)
}
func (n *networkNamespace) AddInterface(i *driverapi.Interface) error {
func (n *networkNamespace) AddInterface(i *Interface) error {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
@ -139,7 +138,7 @@ func (n *networkNamespace) SetGatewayIPv6(gw net.IP) error {
return err
}
func (n *networkNamespace) Interfaces() []*driverapi.Interface {
func (n *networkNamespace) Interfaces() []*Interface {
return n.sinfo.Interfaces
}

123
libnetwork/sandbox/sandbox.go
View File

@ -3,7 +3,7 @@ package sandbox
import (
"net"
"github.com/docker/libnetwork/driverapi"
"github.com/docker/libnetwork/netutils"
)
// Sandbox represents a network sandbox, identified by a specific key. It
@ -16,12 +16,12 @@ type Sandbox interface {
// method. Note that this doesn't incude network interfaces added in any
// other way (such as the default loopback interface which are automatically
// created on creation of a sandbox).
Interfaces() []*driverapi.Interface
Interfaces() []*Interface
// Add an existing Interface to this sandbox. The operation will rename
// from the Interface SrcName to DstName as it moves, and reconfigure the
// interface according to the specified settings.
AddInterface(*driverapi.Interface) error
AddInterface(*Interface) error
// Set default IPv4 gateway for the sandbox
SetGateway(gw net.IP) error
@ -29,3 +29,120 @@ type Sandbox interface {
// Set default IPv6 gateway for the sandbox
SetGatewayIPv6(gw net.IP) error
}
// Info represents all possible information that
// the driver wants to place in the sandbox which includes
// interfaces, routes and gateway
type Info struct {
Interfaces []*Interface
// IPv4 gateway for the sandbox.
Gateway net.IP
// IPv6 gateway for the sandbox.
GatewayIPv6 net.IP
// TODO: Add routes and ip tables etc.
}
// Interface represents the settings and identity of a network device. It is
// used as a return type for Network.Link, and it is common practice for the
// caller to use this information when moving interface SrcName from host
// namespace to DstName in a different net namespace with the appropriate
// network settings.
type Interface struct {
// The name of the interface in the origin network namespace.
SrcName string
// The name that will be assigned to the interface once moves inside a
// network namespace.
DstName string
// IPv4 address for the interface.
Address *net.IPNet
// IPv6 address for the interface.
AddressIPv6 *net.IPNet
}
// GetCopy returns a copy of this Interface structure
func (i *Interface) GetCopy() *Interface {
return &Interface{
SrcName: i.SrcName,
DstName: i.DstName,
Address: netutils.GetIPNetCopy(i.Address),
AddressIPv6: netutils.GetIPNetCopy(i.AddressIPv6),
}
}
// Equal checks if this instance of Interface is equal to the passed one
func (i *Interface) Equal(o *Interface) bool {
if i == o {
return true
}
if o == nil {
return false
}
if i.SrcName != o.SrcName || i.DstName != o.DstName {
return false
}
if !netutils.CompareIPNet(i.Address, o.Address) {
return false
}
if !netutils.CompareIPNet(i.AddressIPv6, o.AddressIPv6) {
return false
}
return true
}
// GetCopy returns a copy of this SandboxInfo structure
func (s *Info) GetCopy() *Info {
list := make([]*Interface, len(s.Interfaces))
for i, iface := range s.Interfaces {
list[i] = iface.GetCopy()
}
gw := netutils.GetIPCopy(s.Gateway)
gw6 := netutils.GetIPCopy(s.GatewayIPv6)
return &Info{Interfaces: list, Gateway: gw, GatewayIPv6: gw6}
}
// Equal checks if this instance of SandboxInfo is equal to the passed one
func (s *Info) Equal(o *Info) bool {
if s == o {
return true
}
if o == nil {
return false
}
if !s.Gateway.Equal(o.Gateway) {
return false
}
if !s.GatewayIPv6.Equal(o.GatewayIPv6) {
return false
}
if (s.Interfaces == nil && o.Interfaces != nil) ||
(s.Interfaces != nil && o.Interfaces == nil) ||
(len(s.Interfaces) != len(o.Interfaces)) {
return false
}
// Note: At the moment, the two lists must be in the same order
for i := 0; i < len(s.Interfaces); i++ {
if !s.Interfaces[i].Equal(o.Interfaces[i]) {
return false
}
}
return true
}

70
libnetwork/sandbox/sandbox_test.go
View File

@ -1,6 +1,9 @@
package sandbox
import "testing"
import (
"net"
"testing"
)
func TestSandboxCreate(t *testing.T) {
key, err := newKey(t)
@ -19,3 +22,68 @@ func TestSandboxCreate(t *testing.T) {
verifySandbox(t, s)
}
func TestInterfaceEqual(t *testing.T) {
list := getInterfaceList()
if !list[0].Equal(list[0]) {
t.Fatalf("Interface.Equal() returned false negative")
}
if list[0].Equal(list[1]) {
t.Fatalf("Interface.Equal() returned false positive")
}
if list[0].Equal(list[1]) != list[1].Equal(list[0]) {
t.Fatalf("Interface.Equal() failed commutative check")
}
}
func TestInterfaceCopy(t *testing.T) {
for _, iface := range getInterfaceList() {
cp := iface.GetCopy()
if !iface.Equal(cp) {
t.Fatalf("Failed to return a copy of Interface")
}
if iface == cp {
t.Fatalf("Failed to return a true copy of Interface")
}
}
}
func TestSandboxInfoCopy(t *testing.T) {
si := Info{Interfaces: getInterfaceList(), Gateway: net.ParseIP("192.168.1.254"), GatewayIPv6: net.ParseIP("2001:2345::abcd:8889")}
cp := si.GetCopy()
if !si.Equal(cp) {
t.Fatalf("Failed to return a copy of Info")
}
if &si == cp {
t.Fatalf("Failed to return a true copy of Info")
}
}
func getInterfaceList() []*Interface {
_, netv4a, _ := net.ParseCIDR("192.168.30.1/24")
_, netv4b, _ := net.ParseCIDR("172.18.255.2/23")
_, netv6a, _ := net.ParseCIDR("2001:2345::abcd:8888/80")
_, netv6b, _ := net.ParseCIDR("2001:2345::abcd:8889/80")
return []*Interface{
&Interface{
SrcName: "veth1234567",
DstName: "eth0",
Address: netv4a,
AddressIPv6: netv6a,
},
&Interface{
SrcName: "veth7654321",
DstName: "eth1",
Address: netv4b,
AddressIPv6: netv6b,
},
}
}

5
libnetwork/types/types.go Normal file
View File

@ -0,0 +1,5 @@
// Package types contains types that are common across libnetwork project
package types
// UUID represents a globally unique ID of various resources like network and endpoint
type UUID string