Golang InterfaceInfo.MTU方法代码示例

func maas2NetworkInterfaces(instance *maas2Instance, subnetsMap map[string]network.Id) ([]network.InterfaceInfo, error) {
	interfaces := instance.machine.InterfaceSet()
	infos := make([]network.InterfaceInfo, 0, len(interfaces))
	for i, iface := range interfaces {

		// The below works for all types except bonds and their members.
		parentName := strings.Join(iface.Parents(), "")
		var nicType network.InterfaceType
		switch maasInterfaceType(iface.Type()) {
		case typePhysical:
			nicType = network.EthernetInterface
			children := strings.Join(iface.Children(), "")
			if parentName == "" && len(iface.Children()) == 1 && strings.HasPrefix(children, "bond") {
				// FIXME: Verify the bond exists, regardless of its name.
				// This is a bond member, set the parent correctly (from
				// Juju's perspective) - to the bond itself.
				parentName = children
			}
		case typeBond:
			parentName = ""
			nicType = network.BondInterface
		case typeVLAN:
			nicType = network.VLAN_8021QInterface
		}

		vlanTag := 0
		if iface.VLAN() != nil {
			vlanTag = iface.VLAN().VID()
		}
		nicInfo := network.InterfaceInfo{
			DeviceIndex:         i,
			MACAddress:          iface.MACAddress(),
			ProviderId:          network.Id(fmt.Sprintf("%v", iface.ID())),
			VLANTag:             vlanTag,
			InterfaceName:       iface.Name(),
			InterfaceType:       nicType,
			ParentInterfaceName: parentName,
			Disabled:            !iface.Enabled(),
			NoAutoStart:         !iface.Enabled(),
		}

		for _, link := range iface.Links() {
			switch maasLinkMode(link.Mode()) {
			case modeUnknown:
				nicInfo.ConfigType = network.ConfigUnknown
			case modeDHCP:
				nicInfo.ConfigType = network.ConfigDHCP
			case modeStatic, modeLinkUp:
				nicInfo.ConfigType = network.ConfigStatic
			default:
				nicInfo.ConfigType = network.ConfigManual
			}

			if link.IPAddress() == "" {
				logger.Debugf("interface %q has no address", iface.Name())
			} else {
				// We set it here initially without a space, just so we don't
				// lose it when we have no linked subnet below.
				nicInfo.Address = network.NewAddress(link.IPAddress())
				nicInfo.ProviderAddressId = network.Id(fmt.Sprintf("%v", link.ID()))
			}

			if link.Subnet() == nil {
				logger.Debugf("interface %q link %d missing subnet", iface.Name(), link.ID())
				infos = append(infos, nicInfo)
				continue
			}

			sub := link.Subnet()
			nicInfo.CIDR = sub.CIDR()
			nicInfo.ProviderSubnetId = network.Id(fmt.Sprintf("%v", sub.ID()))
			nicInfo.ProviderVLANId = network.Id(fmt.Sprintf("%v", sub.VLAN().ID()))

			// Now we know the subnet and space, we can update the address to
			// store the space with it.
			nicInfo.Address = network.NewAddressOnSpace(sub.Space(), link.IPAddress())
			spaceId, ok := subnetsMap[string(sub.CIDR())]
			if !ok {
				// The space we found is not recognised, no
				// provider id available.
				logger.Warningf("interface %q link %d has unrecognised space %q", iface.Name(), link.ID(), sub.Space())
			} else {
				nicInfo.Address.SpaceProviderId = spaceId
				nicInfo.ProviderSpaceId = spaceId
			}

			gwAddr := network.NewAddressOnSpace(sub.Space(), sub.Gateway())
			nicInfo.DNSServers = network.NewAddressesOnSpace(sub.Space(), sub.DNSServers()...)
			if ok {
				gwAddr.SpaceProviderId = spaceId
				for i := range nicInfo.DNSServers {
					nicInfo.DNSServers[i].SpaceProviderId = spaceId
				}
			}
			nicInfo.GatewayAddress = gwAddr
			nicInfo.MTU = sub.VLAN().MTU()

			// Each link we represent as a separate InterfaceInfo, but with the
			// same name and device index, just different addres, subnet, etc.
			infos = append(infos, nicInfo)
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	}

	infos := make([]network.InterfaceInfo, 0, len(interfaces))
	for i, iface := range interfaces {

		// The below works for all types except bonds and their members.
		parentName := strings.Join(iface.Parents, "")
		var nicType network.InterfaceType
		switch iface.Type {
		case typePhysical:
			nicType = network.EthernetInterface
			children := strings.Join(iface.Children, "")
			if parentName == "" && len(iface.Children) == 1 && strings.HasPrefix(children, "bond") {
				// FIXME: Verify the bond exists, regardless of its name.
				// This is a bond member, set the parent correctly (from
				// Juju's perspective) - to the bond itself.
				parentName = children
			}
		case typeBond:
			parentName = ""
			nicType = network.BondInterface
		case typeVLAN:
			nicType = network.VLAN_8021QInterface
		}

		nicInfo := network.InterfaceInfo{
			DeviceIndex:         i,
			MACAddress:          iface.MACAddress,
			ProviderId:          network.Id(fmt.Sprintf("%v", iface.ID)),
			VLANTag:             iface.VLAN.VID,
			InterfaceName:       iface.Name,
			InterfaceType:       nicType,
			ParentInterfaceName: parentName,
			Disabled:            !iface.Enabled,
			NoAutoStart:         !iface.Enabled,
		}

		for _, link := range iface.Links {
			switch link.Mode {
			case modeUnknown:
				nicInfo.ConfigType = network.ConfigUnknown
			case modeDHCP:
				nicInfo.ConfigType = network.ConfigDHCP
			case modeStatic, modeLinkUp:
				nicInfo.ConfigType = network.ConfigStatic
			default:
				nicInfo.ConfigType = network.ConfigManual
			}

			if link.IPAddress == "" {
				logger.Debugf("interface %q has no address", iface.Name)
			} else {
				// We set it here initially without a space, just so we don't
				// lose it when we have no linked subnet below.
				nicInfo.Address = network.NewAddress(link.IPAddress)
				nicInfo.ProviderAddressId = network.Id(fmt.Sprintf("%v", link.ID))
			}

			if link.Subnet == nil {
				logger.Debugf("interface %q link %d missing subnet", iface.Name, link.ID)
				infos = append(infos, nicInfo)
				continue
			}

			sub := link.Subnet
			nicInfo.CIDR = sub.CIDR
			nicInfo.ProviderSubnetId = network.Id(fmt.Sprintf("%v", sub.ID))
			nicInfo.ProviderVLANId = network.Id(fmt.Sprintf("%v", sub.VLAN.ID))

			// Now we know the subnet and space, we can update the address to
			// store the space with it.
			nicInfo.Address = network.NewAddressOnSpace(sub.Space, link.IPAddress)
			spaceId, ok := subnetsMap[string(sub.CIDR)]
			if !ok {
				// The space we found is not recognised, no
				// provider id available.
				logger.Warningf("interface %q link %d has unrecognised space %q", iface.Name, link.ID, sub.Space)
			} else {
				nicInfo.Address.SpaceProviderId = spaceId
				nicInfo.ProviderSpaceId = spaceId
			}

			gwAddr := network.NewAddressOnSpace(sub.Space, sub.GatewayIP)
			nicInfo.DNSServers = network.NewAddressesOnSpace(sub.Space, sub.DNSServers...)
			if ok {
				gwAddr.SpaceProviderId = spaceId
				for i := range nicInfo.DNSServers {
					nicInfo.DNSServers[i].SpaceProviderId = spaceId
				}
			}
			nicInfo.GatewayAddress = gwAddr
			nicInfo.MTU = sub.VLAN.MTU

			// Each link we represent as a separate InterfaceInfo, but with the
			// same name and device index, just different addres, subnet, etc.
			infos = append(infos, nicInfo)
		}
	}
	return infos, nil
}

// maasObjectNetworkInterfaces implements environs.NetworkInterfaces() using the
// new (1.9+) MAAS API, parsing the node details JSON embedded into the given
// maasObject to extract all the relevant InterfaceInfo fields. It returns an
// error satisfying errors.IsNotSupported() if it cannot find the required
// "interface_set" node details field.
func maasObjectNetworkInterfaces(maasObject *gomaasapi.MAASObject) ([]network.InterfaceInfo, error) {

	interfaceSet, ok := maasObject.GetMap()["interface_set"]
	if !ok || interfaceSet.IsNil() {
		// This means we're using an older MAAS API.
		return nil, errors.NotSupportedf("interface_set")
	}

	// TODO(dimitern): Change gomaasapi JSONObject to give access to the raw
	// JSON bytes directly, rather than having to do call MarshalJSON just so
	// the result can be unmarshaled from it.
	//
	// LKK Card: https://canonical.leankit.com/Boards/View/101652562/119311323

	rawBytes, err := interfaceSet.MarshalJSON()
	if err != nil {
		return nil, errors.Annotate(err, "cannot get interface_set JSON bytes")
	}

	interfaces, err := parseInterfaces(rawBytes)
	if err != nil {
		return nil, errors.Trace(err)
	}

	infos := make([]network.InterfaceInfo, 0, len(interfaces))
	for i, iface := range interfaces {
		nicInfo := network.InterfaceInfo{
			DeviceIndex:   i,
			MACAddress:    iface.MACAddress,
			ProviderId:    network.Id(fmt.Sprintf("%v", iface.ID)),
			VLANTag:       iface.VLAN.VID,
			InterfaceName: iface.Name,
			Disabled:      !iface.Enabled,
			NoAutoStart:   !iface.Enabled,
			// This is not needed anymore, but the provisioner still validates it's set.
			NetworkName: network.DefaultPrivate,
		}

		for _, link := range iface.Links {
			switch link.Mode {
			case modeUnknown:
				nicInfo.ConfigType = network.ConfigUnknown
			case modeDHCP:
				nicInfo.ConfigType = network.ConfigDHCP
			case modeStatic, modeLinkUp:
				nicInfo.ConfigType = network.ConfigStatic
			default:
				nicInfo.ConfigType = network.ConfigManual
			}

			if link.IPAddress == "" {
				logger.Warningf("interface %q has no address", iface.Name)
			} else {
				// We set it here initially without a space, just so we don't
				// lose it when we have no linked subnet below.
				nicInfo.Address = network.NewAddress(link.IPAddress)
			}

			if link.Subnet == nil {
				logger.Warningf("interface %q link %d missing subnet", iface.Name, link.ID)
				infos = append(infos, nicInfo)
				continue
			}

			sub := link.Subnet
			nicInfo.CIDR = sub.CIDR
			nicInfo.ProviderSubnetId = network.Id(fmt.Sprintf("%v", sub.ID))

			// Now we know the subnet and space, we can update the address to
			// store the space with it.
			nicInfo.Address = network.NewAddressOnSpace(sub.Space, link.IPAddress)

			gwAddr := network.NewAddressOnSpace(sub.Space, sub.GatewayIP)
			nicInfo.GatewayAddress = gwAddr

			nicInfo.DNSServers = network.NewAddressesOnSpace(sub.Space, sub.DNSServers...)
			nicInfo.MTU = sub.VLAN.MTU

			// Each link we represent as a separate InterfaceInfo, but with the
			// same name and device index, just different addres, subnet, etc.
			infos = append(infos, nicInfo)
		}
	}
	return infos, nil
}