Golang container.Id函数代码示例

// ReleaseContainerAddresses finds addresses allocated to a container
// and marks them as Dead, to be released and removed. It accepts
// container tags as arguments. If address allocation feature flag is
// not enabled, it will return a NotSupported error.
func (p *ProvisionerAPI) ReleaseContainerAddresses(args params.Entities) (params.ErrorResults, error) {
	result := params.ErrorResults{
		Results: make([]params.ErrorResult, len(args.Entities)),
	}

	canAccess, err := p.getAuthFunc()
	if err != nil {
		logger.Errorf("failed to get an authorisation function: %v", err)
		return result, errors.Trace(err)
	}
	// Loop over the passed container tags.
	for i, entity := range args.Entities {
		tag, err := names.ParseMachineTag(entity.Tag)
		if err != nil {
			logger.Warningf("failed to parse machine tag %q: %v", entity.Tag, err)
			result.Results[i].Error = common.ServerError(common.ErrPerm)
			continue
		}

		// The auth function (canAccess) checks that the machine is a
		// top level machine (we filter those out next) or that the
		// machine has the host as a parent.
		container, err := p.getMachine(canAccess, tag)
		if err != nil {
			logger.Warningf("failed to get machine %q: %v", tag, err)
			result.Results[i].Error = common.ServerError(err)
			continue
		} else if !container.IsContainer() {
			err = errors.Errorf("cannot mark addresses for removal for %q: not a container", tag)
			result.Results[i].Error = common.ServerError(err)
			continue
		}

		id := container.Id()
		addresses, err := p.st.AllocatedIPAddresses(id)
		if err != nil {
			logger.Warningf("failed to get Id for container %q: %v", tag, err)
			result.Results[i].Error = common.ServerError(err)
			continue
		}

		deadErrors := []error{}
		logger.Debugf("for container %q found addresses %v", tag, addresses)
		for _, addr := range addresses {
			err = addr.EnsureDead()
			if err != nil {
				deadErrors = append(deadErrors, err)
				continue
			}
		}
		if len(deadErrors) != 0 {
			err = errors.Errorf("failed to mark all addresses for removal for %q: %v", tag, deadErrors)
			result.Results[i].Error = common.ServerError(err)
		}
	}

	return result, nil
}

func (s *provisionerSuite) TestReleaseContainerAddresses(c *gc.C) {
	// This test exercises just the success path, all the other cases
	// are already tested in the apiserver package.
	template := state.MachineTemplate{
		Series: "quantal",
		Jobs:   []state.MachineJob{state.JobHostUnits},
	}
	container, err := s.State.AddMachineInsideMachine(template, s.machine.Id(), instance.LXC)

	// allocate some addresses to release
	subInfo := state.SubnetInfo{
		ProviderId:        "dummy-private",
		CIDR:              "0.10.0.0/24",
		VLANTag:           0,
		AllocatableIPLow:  "0.10.0.0",
		AllocatableIPHigh: "0.10.0.10",
	}
	sub, err := s.State.AddSubnet(subInfo)
	c.Assert(err, jc.ErrorIsNil)
	for i := 0; i < 3; i++ {
		addr := network.NewAddress(fmt.Sprintf("0.10.0.%d", i))
		ipaddr, err := s.State.AddIPAddress(addr, sub.ID())
		c.Check(err, jc.ErrorIsNil)
		err = ipaddr.AllocateTo(container.Id(), "nic42", "aa:bb:cc:dd:ee:f0")
		c.Check(err, jc.ErrorIsNil)
	}
	c.Assert(err, jc.ErrorIsNil)
	password, err := utils.RandomPassword()
	c.Assert(err, jc.ErrorIsNil)
	err = container.SetPassword(password)
	c.Assert(err, jc.ErrorIsNil)
	err = container.SetProvisioned("foo", "fake_nonce", nil)
	c.Assert(err, jc.ErrorIsNil)

	err = s.provisioner.ReleaseContainerAddresses(container.MachineTag())
	c.Assert(err, jc.ErrorIsNil)

	addresses, err := s.State.AllocatedIPAddresses(container.Id())
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(addresses, gc.HasLen, 3)
	for _, addr := range addresses {
		c.Assert(addr.Life(), gc.Equals, state.Dead)
	}
}

func (s *provisionerSuite) TestWatchContainers(c *gc.C) {
	apiMachine, err := s.provisioner.Machine(s.machine.Tag().(names.MachineTag))
	c.Assert(err, gc.IsNil)

	// Add one LXC container.
	template := state.MachineTemplate{
		Series: "quantal",
		Jobs:   []state.MachineJob{state.JobHostUnits},
	}
	container, err := s.State.AddMachineInsideMachine(template, s.machine.Id(), instance.LXC)
	c.Assert(err, gc.IsNil)

	w, err := apiMachine.WatchContainers(instance.LXC)
	c.Assert(err, gc.IsNil)
	defer statetesting.AssertStop(c, w)
	wc := statetesting.NewStringsWatcherC(c, s.BackingState, w)

	// Initial event.
	wc.AssertChange(container.Id())

	// Change something other than the containers and make sure it's
	// not detected.
	err = apiMachine.SetStatus(params.StatusStarted, "not really", nil)
	c.Assert(err, gc.IsNil)
	wc.AssertNoChange()

	// Add a KVM container and make sure it's not detected.
	container, err = s.State.AddMachineInsideMachine(template, s.machine.Id(), instance.KVM)
	c.Assert(err, gc.IsNil)
	wc.AssertNoChange()

	// Add another LXC container and make sure it's detected.
	container, err = s.State.AddMachineInsideMachine(template, s.machine.Id(), instance.LXC)
	c.Assert(err, gc.IsNil)
	wc.AssertChange(container.Id())

	statetesting.AssertStop(c, w)
	wc.AssertClosed()
}

// legacyPrepareOrGetContainerInterfaceInfo optionally allocates an address and
// returns information for configuring networking on a container. It accepts
// container tags as arguments.
func (p *ProvisionerAPI) legacyPrepareOrGetContainerInterfaceInfo(
	args params.Entities,
	provisionContainer bool,
) (
	params.MachineNetworkConfigResults,
	error,
) {
	result := params.MachineNetworkConfigResults{
		Results: make([]params.MachineNetworkConfigResult, len(args.Entities)),
	}

	// Some preparations first.
	environ, host, canAccess, err := p.prepareContainerAccessEnvironment()
	if err != nil {
		return result, errors.Trace(err)
	}
	instId, err := host.InstanceId()
	if err != nil && errors.IsNotProvisioned(err) {
		// If the host machine is not provisioned yet, we have nothing
		// to do. NotProvisionedf will append " not provisioned" to
		// the message.
		err = errors.NotProvisionedf("cannot allocate addresses: host machine %q", host)
		return result, err
	}
	var subnet *state.Subnet
	var subnetInfo network.SubnetInfo
	var interfaceInfo network.InterfaceInfo
	if environs.AddressAllocationEnabled() {
		// We don't need a subnet unless we need to allocate a static IP.
		subnet, subnetInfo, interfaceInfo, err = p.prepareAllocationNetwork(environ, instId)
		if err != nil {
			return result, errors.Annotate(err, "cannot allocate addresses")
		}
	} else {
		var allInterfaceInfos []network.InterfaceInfo
		allInterfaceInfos, err = environ.NetworkInterfaces(instId)
		if err != nil {
			return result, errors.Annotatef(err, "cannot instance %q interfaces", instId)
		} else if len(allInterfaceInfos) == 0 {
			return result, errors.New("no interfaces available")
		}
		// Currently we only support a single NIC per container, so we only need
		// the information from the host instance's first NIC.
		logger.Tracef("interfaces for instance %q: %v", instId, allInterfaceInfos)
		interfaceInfo = allInterfaceInfos[0]
	}

	// Loop over the passed container tags.
	for i, entity := range args.Entities {
		tag, err := names.ParseMachineTag(entity.Tag)
		if err != nil {
			result.Results[i].Error = common.ServerError(err)
			continue
		}

		// The auth function (canAccess) checks that the machine is a
		// top level machine (we filter those out next) or that the
		// machine has the host as a parent.
		container, err := p.getMachine(canAccess, tag)
		if err != nil {
			result.Results[i].Error = common.ServerError(err)
			continue
		} else if !container.IsContainer() {
			err = errors.Errorf("cannot allocate address for %q: not a container", tag)
			result.Results[i].Error = common.ServerError(err)
			continue
		} else if ciid, cerr := container.InstanceId(); provisionContainer == true && cerr == nil {
			// Since we want to configure and create NICs on the
			// container before it starts, it must also be not
			// provisioned yet.
			err = errors.Errorf("container %q already provisioned as %q", container, ciid)
			result.Results[i].Error = common.ServerError(err)
			continue
		} else if cerr != nil && !errors.IsNotProvisioned(cerr) {
			// Any other error needs to be reported.
			result.Results[i].Error = common.ServerError(cerr)
			continue
		}

		var macAddress string
		var address *state.IPAddress
		if provisionContainer {
			// Allocate and set an address.
			macAddress = generateMACAddress()
			address, err = p.allocateAddress(environ, subnet, host, container, instId, macAddress)
			if err != nil {
				err = errors.Annotatef(err, "failed to allocate an address for %q", container)
				result.Results[i].Error = common.ServerError(err)
				continue
			}
		} else {
			id := container.Id()
			addresses, err := p.st.AllocatedIPAddresses(id)
			if err != nil {
				logger.Warningf("failed to get Id for container %q: %v", tag, err)
				result.Results[i].Error = common.ServerError(err)
				continue
//.........这里部分代码省略.........