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Windows libcontainerd implementation

Signed-off-by: John Howard <jhoward@microsoft.com>
Signed-off-by: John Starks <jostarks@microsoft.com>
Signed-off-by: Darren Stahl <darst@microsoft.com>
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
This commit is contained in:
John Howard 2016-03-18 11:53:27 -07:00 committed by Tonis Tiigi
parent 6eebe85290
commit 94d70d8355
22 changed files with 1419 additions and 167 deletions

View file

@ -7,7 +7,6 @@ import (
"os"
"path/filepath"
"github.com/docker/docker/daemon/execdriver"
"github.com/docker/docker/volume"
containertypes "github.com/docker/engine-api/types/container"
)
@ -23,6 +22,12 @@ type Container struct {
// Fields below here are platform specific.
}
// ExitStatus provides exit reasons for a container.
type ExitStatus struct {
// The exit code with which the container exited.
ExitCode int
}
// CreateDaemonEnvironment creates a new environment variable slice for this container.
func (container *Container) CreateDaemonEnvironment(linkedEnv []string) []string {
// On Windows, nothing to link. Just return the container environment.
@ -35,7 +40,7 @@ func (container *Container) UnmountIpcMounts(unmount func(pth string) error) {
}
// IpcMounts returns the list of Ipc related mounts.
func (container *Container) IpcMounts() []execdriver.Mount {
func (container *Container) IpcMounts() []Mount {
return nil
}
@ -45,7 +50,7 @@ func (container *Container) UnmountVolumes(forceSyscall bool, volumeEventLog fun
}
// TmpfsMounts returns the list of tmpfs mounts
func (container *Container) TmpfsMounts() []execdriver.Mount {
func (container *Container) TmpfsMounts() []Mount {
return nil
}

View file

@ -0,0 +1,8 @@
package container
// Mount contains information for a mount operation.
type Mount struct {
Source string `json:"source"`
Destination string `json:"destination"`
Writable bool `json:"writable"`
}

View file

@ -1,9 +1,7 @@
package container
import "github.com/docker/docker/daemon/execdriver"
// setFromExitStatus is a platform specific helper function to set the state
// based on the ExitStatus structure.
func (s *State) setFromExitStatus(exitStatus *execdriver.ExitStatus) {
func (s *State) setFromExitStatus(exitStatus *ExitStatus) {
s.ExitCode = exitStatus.ExitCode
}

View file

@ -7,8 +7,9 @@ import (
)
var (
defaultPidFile = os.Getenv("programdata") + string(os.PathSeparator) + "docker.pid"
defaultGraph = os.Getenv("programdata") + string(os.PathSeparator) + "docker"
defaultPidFile = os.Getenv("programdata") + string(os.PathSeparator) + "docker.pid"
defaultGraph = os.Getenv("programdata") + string(os.PathSeparator) + "docker"
defaultExecRoot = defaultGraph
)
// bridgeConfig stores all the bridge driver specific

View file

@ -4,14 +4,9 @@ package daemon
import (
"fmt"
"strings"
networktypes "github.com/docker/engine-api/types/network"
"github.com/docker/docker/container"
"github.com/docker/docker/daemon/execdriver"
"github.com/docker/docker/daemon/execdriver/windows"
"github.com/docker/docker/layer"
networktypes "github.com/docker/engine-api/types/network"
"github.com/docker/libnetwork"
)
@ -29,135 +24,6 @@ func (daemon *Daemon) DisconnectFromNetwork(container *container.Container, n li
return fmt.Errorf("Windows does not support disconnecting a running container from a network")
}
func (daemon *Daemon) populateCommand(c *container.Container, env []string) error {
en := &execdriver.Network{
Interface: nil,
}
var epList []string
// Connect all the libnetwork allocated networks to the container
if c.NetworkSettings != nil {
for n := range c.NetworkSettings.Networks {
sn, err := daemon.FindNetwork(n)
if err != nil {
continue
}
ep, err := c.GetEndpointInNetwork(sn)
if err != nil {
continue
}
data, err := ep.DriverInfo()
if err != nil {
continue
}
if data["hnsid"] != nil {
epList = append(epList, data["hnsid"].(string))
}
}
}
if daemon.netController == nil {
parts := strings.SplitN(string(c.HostConfig.NetworkMode), ":", 2)
switch parts[0] {
case "none":
case "default", "": // empty string to support existing containers
if !c.Config.NetworkDisabled {
en.Interface = &execdriver.NetworkInterface{
MacAddress: c.Config.MacAddress,
Bridge: daemon.configStore.bridgeConfig.Iface,
PortBindings: c.HostConfig.PortBindings,
// TODO Windows. Include IPAddress. There already is a
// property IPAddress on execDrive.CommonNetworkInterface,
// but there is no CLI option in docker to pass through
// an IPAddress on docker run.
}
}
default:
return fmt.Errorf("invalid network mode: %s", c.HostConfig.NetworkMode)
}
}
// TODO Windows. More resource controls to be implemented later.
resources := &execdriver.Resources{
CommonResources: execdriver.CommonResources{
CPUShares: c.HostConfig.CPUShares,
},
}
processConfig := execdriver.ProcessConfig{
CommonProcessConfig: execdriver.CommonProcessConfig{
Entrypoint: c.Path,
Arguments: c.Args,
Tty: c.Config.Tty,
},
ConsoleSize: c.HostConfig.ConsoleSize,
}
processConfig.Env = env
var layerPaths []string
img, err := daemon.imageStore.Get(c.ImageID)
if err != nil {
return fmt.Errorf("Failed to graph.Get on ImageID %s - %s", c.ImageID, err)
}
if img.RootFS != nil && img.RootFS.Type == "layers+base" {
max := len(img.RootFS.DiffIDs)
for i := 0; i <= max; i++ {
img.RootFS.DiffIDs = img.RootFS.DiffIDs[:i]
path, err := layer.GetLayerPath(daemon.layerStore, img.RootFS.ChainID())
if err != nil {
return fmt.Errorf("Failed to get layer path from graphdriver %s for ImageID %s - %s", daemon.layerStore, img.RootFS.ChainID(), err)
}
// Reverse order, expecting parent most first
layerPaths = append([]string{path}, layerPaths...)
}
}
m, err := c.RWLayer.Metadata()
if err != nil {
return fmt.Errorf("Failed to get layer metadata - %s", err)
}
layerFolder := m["dir"]
var hvPartition bool
// Work out the isolation (whether it is a hypervisor partition)
if c.HostConfig.Isolation.IsDefault() {
// Not specified by caller. Take daemon default
hvPartition = windows.DefaultIsolation.IsHyperV()
} else {
// Take value specified by caller
hvPartition = c.HostConfig.Isolation.IsHyperV()
}
c.Command = &execdriver.Command{
CommonCommand: execdriver.CommonCommand{
ID: c.ID,
Rootfs: c.BaseFS,
WorkingDir: c.Config.WorkingDir,
Network: en,
MountLabel: c.GetMountLabel(),
Resources: resources,
ProcessConfig: processConfig,
ProcessLabel: c.GetProcessLabel(),
},
FirstStart: !c.HasBeenStartedBefore,
LayerFolder: layerFolder,
LayerPaths: layerPaths,
Hostname: c.Config.Hostname,
Isolation: string(c.HostConfig.Isolation),
ArgsEscaped: c.Config.ArgsEscaped,
HvPartition: hvPartition,
EpList: epList,
}
return nil
}
// getSize returns real size & virtual size
func (daemon *Daemon) getSize(container *container.Container) (int64, int64) {
// TODO Windows

View file

@ -18,11 +18,13 @@ import (
"github.com/docker/docker/layer"
"github.com/docker/docker/reference"
"github.com/docker/docker/runconfig"
containertypes "github.com/docker/engine-api/types/container"
// register the windows graph driver
"github.com/docker/docker/daemon/graphdriver/windows"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/parsers"
"github.com/docker/docker/pkg/system"
"github.com/docker/engine-api/types"
containertypes "github.com/docker/engine-api/types/container"
"github.com/docker/libnetwork"
nwconfig "github.com/docker/libnetwork/config"
winlibnetwork "github.com/docker/libnetwork/drivers/windows"
@ -39,7 +41,7 @@ const (
windowsMaxCPUShares = 10000
)
func getBlkioWeightDevices(config *containertypes.HostConfig) ([]*blkiodev.WeightDevice, error) {
func getBlkioWeightDevices(config *containertypes.HostConfig) ([]blkiodev.WeightDevice, error) {
return nil, nil
}
@ -47,19 +49,19 @@ func parseSecurityOpt(container *container.Container, config *containertypes.Hos
return nil
}
func getBlkioReadIOpsDevices(config *containertypes.HostConfig) ([]*blkiodev.ThrottleDevice, error) {
func getBlkioReadIOpsDevices(config *containertypes.HostConfig) ([]blkiodev.ThrottleDevice, error) {
return nil, nil
}
func getBlkioWriteIOpsDevices(config *containertypes.HostConfig) ([]*blkiodev.ThrottleDevice, error) {
func getBlkioWriteIOpsDevices(config *containertypes.HostConfig) ([]blkiodev.ThrottleDevice, error) {
return nil, nil
}
func getBlkioReadBpsDevices(config *containertypes.HostConfig) ([]*blkiodev.ThrottleDevice, error) {
func getBlkioReadBpsDevices(config *containertypes.HostConfig) ([]blkiodev.ThrottleDevice, error) {
return nil, nil
}
func getBlkioWriteBpsDevices(config *containertypes.HostConfig) ([]*blkiodev.ThrottleDevice, error) {
func getBlkioWriteBpsDevices(config *containertypes.HostConfig) ([]blkiodev.ThrottleDevice, error) {
return nil, nil
}
@ -287,6 +289,10 @@ func (daemon *Daemon) registerLinks(container *container.Container, hostConfig *
return nil
}
func (daemon *Daemon) cleanupMountsByID(in string) error {
return nil
}
func (daemon *Daemon) cleanupMounts() error {
return nil
}
@ -307,8 +313,19 @@ func setupDaemonRoot(config *Config, rootDir string, rootUID, rootGID int) error
// conditionalMountOnStart is a platform specific helper function during the
// container start to call mount.
func (daemon *Daemon) conditionalMountOnStart(container *container.Container) error {
// Are we going to run as a Hyper-V container?
hv := false
if container.HostConfig.Isolation.IsDefault() {
// Container is set to use the default, so take the default from the daemon configuration
hv = daemon.defaultIsolation.IsHyperV()
} else {
// Container is requesting an isolation mode. Honour it.
hv = container.HostConfig.Isolation.IsHyperV()
}
// We do not mount if a Hyper-V container
if !container.HostConfig.Isolation.IsHyperV() {
if !hv {
if err := daemon.Mount(container); err != nil {
return err
}
@ -318,11 +335,12 @@ func (daemon *Daemon) conditionalMountOnStart(container *container.Container) er
// conditionalUnmountOnCleanup is a platform specific helper function called
// during the cleanup of a container to unmount.
func (daemon *Daemon) conditionalUnmountOnCleanup(container *container.Container) {
func (daemon *Daemon) conditionalUnmountOnCleanup(container *container.Container) error {
// We do not unmount if a Hyper-V container
if !container.HostConfig.Isolation.IsHyperV() {
daemon.Unmount(container)
return daemon.Unmount(container)
}
return nil
}
func restoreCustomImage(is image.Store, ls layer.Store, rs reference.Store) error {
@ -404,3 +422,35 @@ func restoreCustomImage(is image.Store, ls layer.Store, rs reference.Store) erro
func driverOptions(config *Config) []nwconfig.Option {
return []nwconfig.Option{}
}
func (daemon *Daemon) stats(c *container.Container) (*types.StatsJSON, error) {
return nil, nil
}
// setDefaultIsolation determine the default isolation mode for the
// daemon to run in. This is only applicable on Windows
func (daemon *Daemon) setDefaultIsolation() error {
daemon.defaultIsolation = containertypes.Isolation("process")
for _, option := range daemon.configStore.ExecOptions {
key, val, err := parsers.ParseKeyValueOpt(option)
if err != nil {
return err
}
key = strings.ToLower(key)
switch key {
case "isolation":
if !containertypes.Isolation(val).IsValid() {
return fmt.Errorf("Invalid exec-opt value for 'isolation':'%s'", val)
}
if containertypes.Isolation(val).IsHyperV() {
daemon.defaultIsolation = containertypes.Isolation("hyperv")
}
default:
return fmt.Errorf("Unrecognised exec-opt '%s'\n", key)
}
}
logrus.Infof("Windows default isolation mode: %s", daemon.defaultIsolation)
return nil
}

View file

@ -2,11 +2,13 @@ package daemon
import (
"github.com/docker/docker/container"
"github.com/docker/docker/daemon/execdriver"
"github.com/docker/engine-api/types"
"github.com/docker/docker/daemon/exec"
"github.com/docker/docker/libcontainerd"
)
// setPlatformSpecificExecProcessConfig sets platform-specific fields in the
// ProcessConfig structure. This is a no-op on Windows
func setPlatformSpecificExecProcessConfig(config *types.ExecConfig, container *container.Container, pc *execdriver.ProcessConfig) {
func execSetPlatformOpt(c *container.Container, ec *exec.Config, p *libcontainerd.Process) error {
// Process arguments need to be escaped before sending to OCI.
// TODO (jstarks): escape the entrypoint too once the tests are fixed to not rely on this behavior
p.Args = append([]string{p.Args[0]}, escapeArgs(p.Args[1:])...)
return nil
}

View file

@ -33,8 +33,8 @@ func (daemon *Daemon) containerInspectPre120(name string) (*types.ContainerJSON,
func inspectExecProcessConfig(e *exec.Config) *backend.ExecProcessConfig {
return &backend.ExecProcessConfig{
Tty: e.ProcessConfig.Tty,
Entrypoint: e.ProcessConfig.Entrypoint,
Arguments: e.ProcessConfig.Arguments,
Tty: e.Tty,
Entrypoint: e.Entrypoint,
Arguments: e.Args,
}
}

13
daemon/monitor_windows.go Normal file
View file

@ -0,0 +1,13 @@
package daemon
import (
"github.com/docker/docker/container"
"github.com/docker/docker/libcontainerd"
)
// platformConstructExitStatus returns a platform specific exit status structure
func platformConstructExitStatus(e libcontainerd.StateInfo) *container.ExitStatus {
return &container.ExitStatus{
ExitCode: int(e.ExitCode),
}
}

204
daemon/oci_windows.go Normal file
View file

@ -0,0 +1,204 @@
package daemon
import (
"fmt"
"strings"
"syscall"
"github.com/docker/docker/container"
"github.com/docker/docker/layer"
"github.com/docker/docker/libcontainerd"
"github.com/docker/docker/libcontainerd/windowsoci"
"github.com/docker/docker/oci"
)
func (daemon *Daemon) createSpec(c *container.Container) (*libcontainerd.Spec, error) {
s := oci.DefaultSpec()
linkedEnv, err := daemon.setupLinkedContainers(c)
if err != nil {
return nil, err
}
// TODO Windows - this can be removed. Not used (UID/GID)
rootUID, rootGID := daemon.GetRemappedUIDGID()
if err := c.SetupWorkingDirectory(rootUID, rootGID); err != nil {
return nil, err
}
img, err := daemon.imageStore.Get(c.ImageID)
if err != nil {
return nil, fmt.Errorf("Failed to graph.Get on ImageID %s - %s", c.ImageID, err)
}
// In base spec
s.Hostname = c.FullHostname()
// In s.Mounts
mounts, err := daemon.setupMounts(c)
if err != nil {
return nil, err
}
for _, mount := range mounts {
s.Mounts = append(s.Mounts, windowsoci.Mount{
Source: mount.Source,
Destination: mount.Destination,
Readonly: !mount.Writable,
})
}
// Are we going to run as a Hyper-V container?
hv := false
if c.HostConfig.Isolation.IsDefault() {
// Container is set to use the default, so take the default from the daemon configuration
hv = daemon.defaultIsolation.IsHyperV()
} else {
// Container is requesting an isolation mode. Honour it.
hv = c.HostConfig.Isolation.IsHyperV()
}
if hv {
// TODO We don't yet have the ImagePath hooked up. But set to
// something non-nil to pickup in libcontainerd.
s.Windows.HvRuntime = &windowsoci.HvRuntime{}
}
// In s.Process
if c.Config.ArgsEscaped {
s.Process.Args = append([]string{c.Path}, c.Args...)
} else {
// TODO (jstarks): escape the entrypoint too once the tests are fixed to not rely on this behavior
s.Process.Args = append([]string{c.Path}, escapeArgs(c.Args)...)
}
s.Process.Cwd = c.Config.WorkingDir
s.Process.Env = c.CreateDaemonEnvironment(linkedEnv)
s.Process.InitialConsoleSize = c.HostConfig.ConsoleSize
s.Process.Terminal = c.Config.Tty
s.Process.User.User = c.Config.User
// In spec.Root
s.Root.Path = c.BaseFS
s.Root.Readonly = c.HostConfig.ReadonlyRootfs
// In s.Windows
s.Windows.FirstStart = !c.HasBeenStartedBefore
// s.Windows.LayerFolder.
m, err := c.RWLayer.Metadata()
if err != nil {
return nil, fmt.Errorf("Failed to get layer metadata - %s", err)
}
s.Windows.LayerFolder = m["dir"]
// s.Windows.LayerPaths
var layerPaths []string
if img.RootFS != nil && img.RootFS.Type == "layers+base" {
max := len(img.RootFS.DiffIDs)
for i := 0; i <= max; i++ {
img.RootFS.DiffIDs = img.RootFS.DiffIDs[:i]
path, err := layer.GetLayerPath(daemon.layerStore, img.RootFS.ChainID())
if err != nil {
return nil, fmt.Errorf("Failed to get layer path from graphdriver %s for ImageID %s - %s", daemon.layerStore, img.RootFS.ChainID(), err)
}
// Reverse order, expecting parent most first
layerPaths = append([]string{path}, layerPaths...)
}
}
s.Windows.LayerPaths = layerPaths
// In s.Windows.Networking (TP5+ libnetwork way of doing things)
// Connect all the libnetwork allocated networks to the container
var epList []string
if c.NetworkSettings != nil {
for n := range c.NetworkSettings.Networks {
sn, err := daemon.FindNetwork(n)
if err != nil {
continue
}
ep, err := c.GetEndpointInNetwork(sn)
if err != nil {
continue
}
data, err := ep.DriverInfo()
if err != nil {
continue
}
if data["hnsid"] != nil {
epList = append(epList, data["hnsid"].(string))
}
}
}
s.Windows.Networking = &windowsoci.Networking{
EndpointList: epList,
}
// In s.Windows.Networking (TP4 back compat)
// TODO Windows: Post TP4 - Remove this along with definitions from spec
// and changes to libcontainerd to not read these fields.
if daemon.netController == nil {
parts := strings.SplitN(string(c.HostConfig.NetworkMode), ":", 2)
switch parts[0] {
case "none":
case "default", "": // empty string to support existing containers
if !c.Config.NetworkDisabled {
s.Windows.Networking = &windowsoci.Networking{
MacAddress: c.Config.MacAddress,
Bridge: daemon.configStore.bridgeConfig.Iface,
PortBindings: c.HostConfig.PortBindings,
}
}
default:
return nil, fmt.Errorf("invalid network mode: %s", c.HostConfig.NetworkMode)
}
}
// In s.Windows.Resources
// @darrenstahlmsft implement these resources
cpuShares := uint64(c.HostConfig.CPUShares)
s.Windows.Resources = &windowsoci.Resources{
CPU: &windowsoci.CPU{
//TODO Count: ...,
//TODO Percent: ...,
Shares: &cpuShares,
},
Memory: &windowsoci.Memory{
//TODO Limit: ...,
//TODO Reservation: ...,
},
Network: &windowsoci.Network{
//TODO Bandwidth: ...,
},
Storage: &windowsoci.Storage{
//TODO Bps: ...,
//TODO Iops: ...,
//TODO SandboxSize: ...,
},
}
// BUGBUG - Next problem. This was an exec opt. Where do we now get these?
// Come back to this when add Xenon support.
// var hvPartition bool
// // Work out the isolation (whether it is a hypervisor partition)
// if c.HostConfig.Isolation.IsDefault() {
// // Not specified by caller. Take daemon default
// hvPartition = windows.DefaultIsolation.IsHyperV()
// } else {
// // Take value specified by caller
// hvPartition = c.HostConfig.Isolation.IsHyperV()
// }
// Isolation: string(c.HostConfig.Isolation),
// HvPartition: hvPartition,
// }
return (*libcontainerd.Spec)(&s), nil
}
func escapeArgs(args []string) []string {
escapedArgs := make([]string, len(args))
for i, a := range args {
escapedArgs[i] = syscall.EscapeArg(a)
}
return escapedArgs
}

13
daemon/update_windows.go Normal file
View file

@ -0,0 +1,13 @@
// +build windows
package daemon
import (
"github.com/docker/docker/libcontainerd"
"github.com/docker/engine-api/types/container"
)
func toContainerdResources(resources container.Resources) libcontainerd.Resources {
var r libcontainerd.Resources
return r
}

View file

@ -7,18 +7,22 @@ import (
"sort"
"github.com/docker/docker/container"
"github.com/docker/docker/daemon/execdriver"
"github.com/docker/docker/volume"
)
// setupMounts configures the mount points for a container by appending each
// of the configured mounts on the container to the execdriver mount structure
// of the configured mounts on the container to the oci mount structure
// which will ultimately be passed into the exec driver during container creation.
// It also ensures each of the mounts are lexographically sorted.
func (daemon *Daemon) setupMounts(container *container.Container) ([]execdriver.Mount, error) {
var mnts []execdriver.Mount
for _, mount := range container.MountPoints { // type is volume.MountPoint
if err := daemon.lazyInitializeVolume(container.ID, mount); err != nil {
// BUGBUG TODO Windows containerd. This would be much better if it returned
// an array of windowsoci mounts, not container mounts. Then no need to
// do multiple transitions.
func (daemon *Daemon) setupMounts(c *container.Container) ([]container.Mount, error) {
var mnts []container.Mount
for _, mount := range c.MountPoints { // type is volume.MountPoint
if err := daemon.lazyInitializeVolume(c.ID, mount); err != nil {
return nil, err
}
// If there is no source, take it from the volume path
@ -29,7 +33,7 @@ func (daemon *Daemon) setupMounts(container *container.Container) ([]execdriver.
if s == "" {
return nil, fmt.Errorf("No source for mount name '%s' driver %q destination '%s'", mount.Name, mount.Driver, mount.Destination)
}
mnts = append(mnts, execdriver.Mount{
mnts = append(mnts, container.Mount{
Source: s,
Destination: mount.Destination,
Writable: mount.RW,

View file

@ -10,6 +10,7 @@ import (
"github.com/Sirupsen/logrus"
apiserver "github.com/docker/docker/api/server"
"github.com/docker/docker/daemon"
"github.com/docker/docker/libcontainerd"
"github.com/docker/docker/pkg/mflag"
"github.com/docker/docker/pkg/system"
)
@ -57,3 +58,7 @@ func setupConfigReloadTrap(configFile string, flags *mflag.FlagSet, reload func(
}
}()
}
func (cli *DaemonCli) getPlatformRemoteOptions() []libcontainerd.RemoteOption {
return nil
}

View file

@ -0,0 +1,579 @@
package libcontainerd
import (
"encoding/json"
"errors"
"fmt"
"io"
"path/filepath"
"strconv"
"strings"
"syscall"
"time"
"github.com/Microsoft/hcsshim"
"github.com/Sirupsen/logrus"
)
type client struct {
clientCommon
// Platform specific properties below here (none presently on Windows)
}
// defaultContainerNAT is the default name of the container NAT device that is
// preconfigured on the server. TODO Windows - Remove for TP5 support as not needed.
const defaultContainerNAT = "ContainerNAT"
// Win32 error codes that are used for various workarounds
// These really should be ALL_CAPS to match golangs syscall library and standard
// Win32 error conventions, but golint insists on CamelCase.
const (
CoEClassstring = syscall.Errno(0x800401F3) // Invalid class string
ErrorNoNetwork = syscall.Errno(1222) // The network is not present or not started
ErrorBadPathname = syscall.Errno(161) // The specified path is invalid
ErrorInvalidObject = syscall.Errno(0x800710D8) // The object identifier does not represent a valid object
)
type layer struct {
ID string
Path string
}
type defConfig struct {
DefFile string
}
type portBinding struct {
Protocol string
InternalPort int
ExternalPort int
}
type natSettings struct {
Name string
PortBindings []portBinding
}
type networkConnection struct {
NetworkName string
//EnableNat bool
Nat natSettings
}
type networkSettings struct {
MacAddress string
}
type device struct {
DeviceType string
Connection interface{}
Settings interface{}
}
type mappedDir struct {
HostPath string
ContainerPath string
ReadOnly bool
}
// TODO Windows RTM: @darrenstahlmsft Add ProcessorCount
type containerInit struct {
SystemType string // HCS requires this to be hard-coded to "Container"
Name string // Name of the container. We use the docker ID.
Owner string // The management platform that created this container
IsDummy bool // Used for development purposes.
VolumePath string // Windows volume path for scratch space
Devices []device // Devices used by the container
IgnoreFlushesDuringBoot bool // Optimization hint for container startup in Windows
LayerFolderPath string // Where the layer folders are located
Layers []layer // List of storage layers
ProcessorWeight uint64 `json:",omitempty"` // CPU Shares 0..10000 on Windows; where 0 will be omitted and HCS will default.
ProcessorMaximum int64 `json:",omitempty"` // CPU maximum usage percent 1..100
StorageIOPSMaximum uint64 `json:",omitempty"` // Maximum Storage IOPS
StorageBandwidthMaximum uint64 `json:",omitempty"` // Maximum Storage Bandwidth in bytes per second
StorageSandboxSize uint64 `json:",omitempty"` // Size in bytes that the container system drive should be expanded to if smaller
MemoryMaximumInMB int64 `json:",omitempty"` // Maximum memory available to the container in Megabytes
HostName string // Hostname
MappedDirectories []mappedDir // List of mapped directories (volumes/mounts)
SandboxPath string // Location of unmounted sandbox (used for Hyper-V containers)
HvPartition bool // True if it a Hyper-V Container
EndpointList []string // List of networking endpoints to be attached to container
}
// defaultOwner is a tag passed to HCS to allow it to differentiate between
// container creator management stacks. We hard code "docker" in the case
// of docker.
const defaultOwner = "docker"
// Create is the entrypoint to create a container from a spec, and if successfully
// created, start it too.
func (clnt *client) Create(containerID string, spec Spec, options ...CreateOption) error {
logrus.Debugln("LCD client.Create() with spec", spec)
cu := &containerInit{
SystemType: "Container",
Name: containerID,
Owner: defaultOwner,
VolumePath: spec.Root.Path,
IgnoreFlushesDuringBoot: spec.Windows.FirstStart,
LayerFolderPath: spec.Windows.LayerFolder,
HostName: spec.Hostname,
}
if spec.Windows.Networking != nil {
cu.EndpointList = spec.Windows.Networking.EndpointList
}
if spec.Windows.Resources != nil {
if spec.Windows.Resources.CPU != nil {
if spec.Windows.Resources.CPU.Shares != nil {
cu.ProcessorWeight = *spec.Windows.Resources.CPU.Shares
}
if spec.Windows.Resources.CPU.Percent != nil {
cu.ProcessorMaximum = *spec.Windows.Resources.CPU.Percent * 100 // ProcessorMaximum is a value between 1 and 10000
}
}
if spec.Windows.Resources.Memory != nil {
if spec.Windows.Resources.Memory.Limit != nil {
cu.MemoryMaximumInMB = *spec.Windows.Resources.Memory.Limit / 1024 / 1024
}
}
if spec.Windows.Resources.Storage != nil {
if spec.Windows.Resources.Storage.Bps != nil {
cu.StorageBandwidthMaximum = *spec.Windows.Resources.Storage.Bps
}
if spec.Windows.Resources.Storage.Iops != nil {
cu.StorageIOPSMaximum = *spec.Windows.Resources.Storage.Iops
}
if spec.Windows.Resources.Storage.SandboxSize != nil {
cu.StorageSandboxSize = *spec.Windows.Resources.Storage.SandboxSize
}
}
}
// TODO Ultimately need to set the path from HvRuntime.ImagePath
cu.HvPartition = (spec.Windows.HvRuntime != nil)
// if spec.Windows.HvRuntime != nil {
// cu.HvPartition = len(spec.Windows.HvRuntime.ImagePath) > 0
// }
if cu.HvPartition {
cu.SandboxPath = filepath.Dir(spec.Windows.LayerFolder)
} else {
cu.VolumePath = spec.Root.Path
cu.LayerFolderPath = spec.Windows.LayerFolder
}
for _, layerPath := range spec.Windows.LayerPaths {
_, filename := filepath.Split(layerPath)
g, err := hcsshim.NameToGuid(filename)
if err != nil {
return err
}
cu.Layers = append(cu.Layers, layer{
ID: g.ToString(),
Path: layerPath,
})
}
// Add the mounts (volumes, bind mounts etc) to the structure
mds := make([]mappedDir, len(spec.Mounts))
for i, mount := range spec.Mounts {
mds[i] = mappedDir{
HostPath: mount.Source,
ContainerPath: mount.Destination,
ReadOnly: mount.Readonly}
}
cu.MappedDirectories = mds
// TODO Windows: vv START OF TP4 BLOCK OF CODE. REMOVE ONCE TP4 IS NO LONGER SUPPORTED
if hcsshim.IsTP4() &&
spec.Windows.Networking != nil &&
spec.Windows.Networking.Bridge != "" {
// Enumerate through the port bindings specified by the user and convert
// them into the internal structure matching the JSON blob that can be
// understood by the HCS.
var pbs []portBinding
for i, v := range spec.Windows.Networking.PortBindings {
proto := strings.ToUpper(i.Proto())
if proto != "TCP" && proto != "UDP" {
return fmt.Errorf("invalid protocol %s", i.Proto())
}
if len(v) > 1 {
return fmt.Errorf("Windows does not support more than one host port in NAT settings")
}
for _, v2 := range v {
var (
iPort, ePort int
err error
)
if len(v2.HostIP) != 0 {
return fmt.Errorf("Windows does not support host IP addresses in NAT settings")
}
if ePort, err = strconv.Atoi(v2.HostPort); err != nil {
return fmt.Errorf("invalid container port %s: %s", v2.HostPort, err)
}
if iPort, err = strconv.Atoi(i.Port()); err != nil {
return fmt.Errorf("invalid internal port %s: %s", i.Port(), err)
}
if iPort < 0 || iPort > 65535 || ePort < 0 || ePort > 65535 {
return fmt.Errorf("specified NAT port is not in allowed range")
}
pbs = append(pbs,
portBinding{ExternalPort: ePort,
InternalPort: iPort,
Protocol: proto})
}
}
dev := device{
DeviceType: "Network",
Connection: &networkConnection{
NetworkName: spec.Windows.Networking.Bridge,
Nat: natSettings{
Name: defaultContainerNAT,
PortBindings: pbs,
},
},
}
if spec.Windows.Networking.MacAddress != "" {
windowsStyleMAC := strings.Replace(
spec.Windows.Networking.MacAddress, ":", "-", -1)
dev.Settings = networkSettings{
MacAddress: windowsStyleMAC,
}
}
cu.Devices = append(cu.Devices, dev)
} else {
logrus.Debugln("No network interface")
}
// TODO Windows: ^^ END OF TP4 BLOCK OF CODE. REMOVE ONCE TP4 IS NO LONGER SUPPORTED
configurationb, err := json.Marshal(cu)
if err != nil {
return err
}
configuration := string(configurationb)
// TODO Windows TP5 timeframe. Remove when TP4 is no longer supported.
// The following a workaround for Windows TP4 which has a networking
// bug which fairly frequently returns an error. Back off and retry.
if !hcsshim.IsTP4() {
if err := hcsshim.CreateComputeSystem(containerID, configuration); err != nil {
return err
}
} else {
maxAttempts := 5
for i := 1; i <= maxAttempts; i++ {
err = hcsshim.CreateComputeSystem(containerID, configuration)
if err == nil {
break
}
if herr, ok := err.(*hcsshim.HcsError); ok {
if herr.Err != syscall.ERROR_NOT_FOUND && // Element not found
herr.Err != syscall.ERROR_FILE_NOT_FOUND && // The system cannot find the file specified
herr.Err != ErrorNoNetwork && // The network is not present or not started
herr.Err != ErrorBadPathname && // The specified path is invalid
herr.Err != CoEClassstring && // Invalid class string
herr.Err != ErrorInvalidObject { // The object identifier does not represent a valid object
logrus.Debugln("Failed to create temporary container ", err)
return err
}
logrus.Warnf("Invoking Windows TP4 retry hack (%d of %d)", i, maxAttempts-1)
time.Sleep(50 * time.Millisecond)
}
}
}
// Construct a container object for calling start on it.
container := &container{
containerCommon: containerCommon{
process: process{
processCommon: processCommon{
containerID: containerID,
client: clnt,
friendlyName: InitFriendlyName,
},
},
processes: make(map[string]*process),
},
ociSpec: spec,
}
container.options = options
for _, option := range options {
if err := option.Apply(container); err != nil {
logrus.Error(err)
}
}
// Call start, and if it fails, delete the container from our
// internal structure, and also keep HCS in sync by deleting the
// container there.
logrus.Debugf("Create() id=%s, Calling start()", containerID)
if err := container.start(); err != nil {
clnt.deleteContainer(containerID)
return err
}
logrus.Debugf("Create() id=%s completed successfully", containerID)
return nil
}
// AddProcess is the handler for adding a process to an already running
// container. It's called through docker exec.
func (clnt *client) AddProcess(containerID, processFriendlyName string, procToAdd Process) error {
clnt.lock(containerID)
defer clnt.unlock(containerID)
container, err := clnt.getContainer(containerID)
if err != nil {
return err
}
createProcessParms := hcsshim.CreateProcessParams{
EmulateConsole: procToAdd.Terminal,
ConsoleSize: procToAdd.InitialConsoleSize,
}
// Take working directory from the process to add if it is defined,
// otherwise take from the first process.
if procToAdd.Cwd != "" {
createProcessParms.WorkingDirectory = procToAdd.Cwd
} else {
createProcessParms.WorkingDirectory = container.ociSpec.Process.Cwd
}
// Configure the environment for the process
createProcessParms.Environment = setupEnvironmentVariables(procToAdd.Env)
createProcessParms.CommandLine = strings.Join(procToAdd.Args, " ")
logrus.Debugf("commandLine: %s", createProcessParms.CommandLine)
// Start the command running in the container. Note we always tell HCS to
// create stdout as it's required regardless of '-i' or '-t' options, so that
// docker can always grab the output through logs. We also tell HCS to always
// create stdin, even if it's not used - it will be closed shortly. Stderr
// is only created if it we're not -t.
var stdout, stderr io.ReadCloser
var pid uint32
iopipe := &IOPipe{Terminal: procToAdd.Terminal}
pid, iopipe.Stdin, stdout, stderr, err = hcsshim.CreateProcessInComputeSystem(
containerID,
true,
true,
!procToAdd.Terminal,
createProcessParms)
if err != nil {
logrus.Errorf("AddProcess %s CreateProcessInComputeSystem() failed %s", containerID, err)
return err
}
// Convert io.ReadClosers to io.Readers
if stdout != nil {
iopipe.Stdout = openReaderFromPipe(stdout)
}
if stderr != nil {
iopipe.Stderr = openReaderFromPipe(stderr)
}
// Add the process to the containers list of processes
container.processes[processFriendlyName] =
&process{
processCommon: processCommon{
containerID: containerID,
friendlyName: processFriendlyName,
client: clnt,
systemPid: pid,
},
}
// Make sure the lock is not held while calling back into the daemon
clnt.unlock(containerID)
// Tell the engine to attach streams back to the client
if err := clnt.backend.AttachStreams(processFriendlyName, *iopipe); err != nil {
return err
}
// Lock again so that the defer unlock doesn't fail. (I really don't like this code)
clnt.lock(containerID)
// Spin up a go routine waiting for exit to handle cleanup
go container.waitExit(pid, processFriendlyName, false)
return nil
}
// Signal handles `docker stop` on Windows. While Linux has support for
// the full range of signals, signals aren't really implemented on Windows.
// We fake supporting regular stop and -9 to force kill.
func (clnt *client) Signal(containerID string, sig int) error {
var (
cont *container
err error
)
// Get the container as we need it to find the pid of the process.
clnt.lock(containerID)
defer clnt.unlock(containerID)
if cont, err = clnt.getContainer(containerID); err != nil {
return err
}
logrus.Debugf("lcd: Signal() containerID=%s sig=%d pid=%d", containerID, sig, cont.systemPid)
context := fmt.Sprintf("Signal: sig=%d pid=%d", sig, cont.systemPid)
if syscall.Signal(sig) == syscall.SIGKILL {
// Terminate the compute system
if err := hcsshim.TerminateComputeSystem(containerID, hcsshim.TimeoutInfinite, context); err != nil {
logrus.Errorf("Failed to terminate %s - %q", containerID, err)
}
} else {
// Terminate Process
if err = hcsshim.TerminateProcessInComputeSystem(containerID, cont.systemPid); err != nil {
logrus.Warnf("Failed to terminate pid %d in %s: %q", cont.systemPid, containerID, err)
// Ignore errors
err = nil
}
// Shutdown the compute system
if err := hcsshim.ShutdownComputeSystem(containerID, hcsshim.TimeoutInfinite, context); err != nil {
logrus.Errorf("Failed to shutdown %s - %q", containerID, err)
}
}
return nil
}
// Resize handles a CLI event to resize an interactive docker run or docker exec
// window.
func (clnt *client) Resize(containerID, processFriendlyName string, width, height int) error {
// Get the libcontainerd container object
clnt.lock(containerID)
defer clnt.unlock(containerID)
cont, err := clnt.getContainer(containerID)
if err != nil {
return err
}
if processFriendlyName == InitFriendlyName {
logrus.Debugln("Resizing systemPID in", containerID, cont.process.systemPid)
return hcsshim.ResizeConsoleInComputeSystem(containerID, cont.process.systemPid, height, width)
}
for _, p := range cont.processes {
if p.friendlyName == processFriendlyName {
logrus.Debugln("Resizing exec'd process", containerID, p.systemPid)
return hcsshim.ResizeConsoleInComputeSystem(containerID, p.systemPid, height, width)
}
}
return fmt.Errorf("Resize could not find containerID %s to resize", containerID)
}
// Pause handles pause requests for containers
func (clnt *client) Pause(containerID string) error {
return errors.New("Windows: Containers cannot be paused")
}
// Resume handles resume requests for containers
func (clnt *client) Resume(containerID string) error {
return errors.New("Windows: Containers cannot be paused")
}
// Stats handles stats requests for containers
func (clnt *client) Stats(containerID string) (*Stats, error) {
return nil, errors.New("Windows: Stats not implemented")
}
// Restore is the handler for restoring a container
func (clnt *client) Restore(containerID string, unusedOnWindows ...CreateOption) error {
logrus.Debugf("lcd Restore %s", containerID)
return clnt.backend.StateChanged(containerID, StateInfo{
State: StateExit,
ExitCode: 1 << 31,
})
// var err error
// clnt.lock(containerID)
// defer clnt.unlock(containerID)
// logrus.Debugf("restore container %s state %s", containerID)
// if _, err := clnt.getContainer(containerID); err == nil {
// return fmt.Errorf("container %s is aleady active", containerID)
// }
// defer func() {
// if err != nil {
// clnt.deleteContainer(containerID)
// }
// }()
// // ====> BUGBUG Where does linux get the pid from systemPid: pid,
// container := &container{
// containerCommon: containerCommon{
// process: process{
// processCommon: processCommon{
// containerID: containerID,
// client: clnt,
// friendlyName: InitFriendlyName,
// },
// },
// processes: make(map[string]*process),
// },
// }
// container.systemPid = systemPid(cont)
// var terminal bool
// for _, p := range cont.Processes {
// if p.Pid == InitFriendlyName {
// terminal = p.Terminal
// }
// }
// iopipe, err := container.openFifos(terminal)
// if err != nil {
// return err
// }
// if err := clnt.backend.AttachStreams(containerID, *iopipe); err != nil {
// return err
// }
// clnt.appendContainer(container)
// err = clnt.backend.StateChanged(containerID, StateInfo{
// State: StateRestore,
// Pid: container.systemPid,
// })
// if err != nil {
// return err
// }
// return nil
}
// GetPidsForContainers is not implemented on Windows.
func (clnt *client) GetPidsForContainer(containerID string) ([]int, error) {
return nil, errors.New("GetPidsForContainer: GetPidsForContainer() not implemented")
}
func (clnt *client) UpdateResources(containerID string, resources Resources) error {
// Updating resource isn't supported on Windows
// but we should return nil for enabling updating container
return nil
}

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@ -0,0 +1,204 @@
package libcontainerd
import (
"io"
"strings"
"syscall"
"github.com/Microsoft/hcsshim"
"github.com/Sirupsen/logrus"
)
type container struct {
containerCommon
// Platform specific fields are below here. There are none presently on Windows.
options []CreateOption
// The ociSpec is required, as client.Create() needs a spec,
// but can be called from the RestartManager context which does not
// otherwise have access to the Spec
ociSpec Spec
}
func (ctr *container) newProcess(friendlyName string) *process {
return &process{
processCommon: processCommon{
containerID: ctr.containerID,
friendlyName: friendlyName,
client: ctr.client,
},
}
}
func (ctr *container) start() error {
var err error
// Start the container
logrus.Debugln("Starting container ", ctr.containerID)
if err = hcsshim.StartComputeSystem(ctr.containerID); err != nil {
logrus.Errorf("Failed to start compute system: %s", err)
return err
}
createProcessParms := hcsshim.CreateProcessParams{
EmulateConsole: ctr.ociSpec.Process.Terminal,
WorkingDirectory: ctr.ociSpec.Process.Cwd,
ConsoleSize: ctr.ociSpec.Process.InitialConsoleSize,
}
// Configure the environment for the process
createProcessParms.Environment = setupEnvironmentVariables(ctr.ociSpec.Process.Env)
createProcessParms.CommandLine = strings.Join(ctr.ociSpec.Process.Args, " ")
iopipe := &IOPipe{Terminal: ctr.ociSpec.Process.Terminal}
// Start the command running in the container. Note we always tell HCS to
// create stdout as it's required regardless of '-i' or '-t' options, so that
// docker can always grab the output through logs. We also tell HCS to always
// create stdin, even if it's not used - it will be closed shortly. Stderr
// is only created if it we're not -t.
var pid uint32
var stdout, stderr io.ReadCloser
pid, iopipe.Stdin, stdout, stderr, err = hcsshim.CreateProcessInComputeSystem(
ctr.containerID,
true,
true,
!ctr.ociSpec.Process.Terminal,
createProcessParms)
if err != nil {
logrus.Errorf("CreateProcessInComputeSystem() failed %s", err)
// Explicitly terminate the compute system here.
if err2 := hcsshim.TerminateComputeSystem(ctr.containerID, hcsshim.TimeoutInfinite, "CreateProcessInComputeSystem failed"); err2 != nil {
// Ignore this error, there's not a lot we can do except log it
logrus.Warnf("Failed to TerminateComputeSystem after a failed CreateProcessInComputeSystem. Ignoring this.", err2)
} else {
logrus.Debugln("Cleaned up after failed CreateProcessInComputeSystem by calling TerminateComputeSystem")
}
return err
}
// Convert io.ReadClosers to io.Readers
if stdout != nil {
iopipe.Stdout = openReaderFromPipe(stdout)
}
if stderr != nil {
iopipe.Stderr = openReaderFromPipe(stderr)
}
// Save the PID
logrus.Debugf("Process started - PID %d", pid)
ctr.systemPid = uint32(pid)
// Spin up a go routine waiting for exit to handle cleanup
go ctr.waitExit(pid, InitFriendlyName, true)
ctr.client.appendContainer(ctr)
if err := ctr.client.backend.AttachStreams(ctr.containerID, *iopipe); err != nil {
// OK to return the error here, as waitExit will handle tear-down in HCS
return err
}
// Tell the docker engine that the container has started.
si := StateInfo{
State: StateStart,
Pid: ctr.systemPid, // Not sure this is needed? Double-check monitor.go in daemon BUGBUG @jhowardmsft
}
return ctr.client.backend.StateChanged(ctr.containerID, si)
}
// waitExit runs as a goroutine waiting for the process to exit. It's
// equivalent to (in the linux containerd world) where events come in for
// state change notifications from containerd.
func (ctr *container) waitExit(pid uint32, processFriendlyName string, isFirstProcessToStart bool) error {
logrus.Debugln("waitExit on pid", pid)
// Block indefinitely for the process to exit.
exitCode, err := hcsshim.WaitForProcessInComputeSystem(ctr.containerID, pid, hcsshim.TimeoutInfinite)
if err != nil {
if herr, ok := err.(*hcsshim.HcsError); ok && herr.Err != syscall.ERROR_BROKEN_PIPE {
logrus.Warnf("WaitForProcessInComputeSystem failed (container may have been killed): %s", err)
}
// Fall through here, do not return. This ensures we attempt to continue the
// shutdown in HCS nad tell the docker engine that the process/container
// has exited to avoid a container being dropped on the floor.
}
// Assume the container has exited
si := StateInfo{
State: StateExit,
ExitCode: uint32(exitCode),
Pid: pid,
ProcessID: processFriendlyName,
}
// But it could have been an exec'd process which exited
if !isFirstProcessToStart {
si.State = StateExitProcess
}
// If this is the init process, always call into vmcompute.dll to
// shutdown the container after we have completed.
if isFirstProcessToStart {
logrus.Debugf("Shutting down container %s", ctr.containerID)
// Explicit timeout here rather than hcsshim.TimeoutInfinte to avoid a
// (remote) possibility that ShutdownComputeSystem hangs indefinitely.
const shutdownTimeout = 5 * 60 * 1000 // 5 minutes
if err := hcsshim.ShutdownComputeSystem(ctr.containerID, shutdownTimeout, "waitExit"); err != nil {
if herr, ok := err.(*hcsshim.HcsError); !ok ||
(herr.Err != hcsshim.ERROR_SHUTDOWN_IN_PROGRESS &&
herr.Err != ErrorBadPathname &&
herr.Err != syscall.ERROR_PATH_NOT_FOUND) {
logrus.Warnf("Ignoring error from ShutdownComputeSystem %s", err)
}
} else {
logrus.Debugf("Completed shutting down container %s", ctr.containerID)
}
// BUGBUG - Is taking the lock necessary here? Should it just be taken for
// the deleteContainer call, not for the restart logic? @jhowardmsft
ctr.client.lock(ctr.containerID)
defer ctr.client.unlock(ctr.containerID)
if si.State == StateExit && ctr.restartManager != nil {
restart, wait, err := ctr.restartManager.ShouldRestart(uint32(exitCode))
if err != nil {
logrus.Error(err)
} else if restart {
si.State = StateRestart
ctr.restarting = true
go func() {
err := <-wait
ctr.restarting = false
if err != nil {
si.State = StateExit
if err := ctr.client.backend.StateChanged(ctr.containerID, si); err != nil {
logrus.Error(err)
}
logrus.Error(err)
} else {
ctr.client.Create(ctr.containerID, ctr.ociSpec, ctr.options...)
}
}()
}
}
// Remove process from list if we have exited
// We need to do so here in case the Message Handler decides to restart it.
if si.State == StateExit {
ctr.client.deleteContainer(ctr.friendlyName)
}
}
// Call into the backend to notify it of the state change.
logrus.Debugf("waitExit() calling backend.StateChanged %v", si)
if err := ctr.client.backend.StateChanged(ctr.containerID, si); err != nil {
logrus.Error(err)
}
logrus.Debugln("waitExit() completed OK")
return nil
}

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@ -0,0 +1,24 @@
package libcontainerd
import (
"io"
)
// process keeps the state for both main container process and exec process.
// process keeps the state for both main container process and exec process.
type process struct {
processCommon
}
func openReaderFromPipe(p io.ReadCloser) io.Reader {
r, w := io.Pipe()
go func() {
if _, err := io.Copy(w, p); err != nil {
r.CloseWithError(err)
}
w.Close()
p.Close()
}()
return r
}

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@ -0,0 +1,28 @@
package libcontainerd
import "sync"
type remote struct {
}
func (r *remote) Client(b Backend) (Client, error) {
c := &client{
clientCommon: clientCommon{
backend: b,
containerMutexes: make(map[string]*sync.Mutex),
containers: make(map[string]*container),
},
}
return c, nil
}
// Cleanup is a no-op on Windows. It is here to implement the same interface
// to meet compilation requirements.
func (r *remote) Cleanup() {
}
// New creates a fresh instance of libcontainerd remote. This is largely
// a no-op on Windows.
func New(_ string, _ ...RemoteOption) (Remote, error) {
return &remote{}, nil
}

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@ -0,0 +1,18 @@
package libcontainerd
import "github.com/docker/docker/libcontainerd/windowsoci"
// Spec is the base configuration for the container.
type Spec windowsoci.WindowsSpec
// Process contains information to start a specific application inside the container.
type Process windowsoci.Process
// User specifies user information for the containers main process.
type User windowsoci.User
// Stats contains a stats properties from containerd.
type Stats struct{}
// Resources defines updatable container resource values.
type Resources struct{}

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@ -0,0 +1,16 @@
package libcontainerd
import "strings"
// setupEnvironmentVariables convert a string array of environment variables
// into a map as required by the HCS. Source array is in format [v1=k1] [v2=k2] etc.
func setupEnvironmentVariables(a []string) map[string]string {
r := make(map[string]string)
for _, s := range a {
arr := strings.Split(s, "=")
if len(arr) == 2 {
r[arr[0]] = arr[1]
}
}
return r
}

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@ -0,0 +1,188 @@
package windowsoci
// This file is a hack - essentially a mirror of OCI spec for Windows.
import (
"fmt"
"github.com/docker/go-connections/nat"
)
// WindowsSpec is the full specification for Windows containers.
type WindowsSpec struct {
Spec
// Windows is platform specific configuration for Windows based containers.
Windows Windows `json:"windows"`
}
// Spec is the base configuration for the container. It specifies platform
// independent configuration. This information must be included when the
// bundle is packaged for distribution.
type Spec struct {
// Version is the version of the specification that is supported.
Version string `json:"ociVersion"`
// Platform is the host information for OS and Arch.
Platform Platform `json:"platform"`
// Process is the container's main process.
Process Process `json:"process"`
// Root is the root information for the container's filesystem.
Root Root `json:"root"`
// Hostname is the container's host name.
Hostname string `json:"hostname,omitempty"`
// Mounts profile configuration for adding mounts to the container's filesystem.
Mounts []Mount `json:"mounts"`
}
// Windows contains platform specific configuration for Windows based containers.
type Windows struct {
// Resources contain information for handling resource constraints for the container
Resources *Resources `json:"resources,omitempty"`
// Networking contains the platform specific network settings for the container.
Networking *Networking `json:"networking,omitempty"`
// FirstStart is used for an optimization on first boot of Windows
FirstStart bool `json:"first_start,omitempty"`
// LayerFolder is the path to the current layer folder
LayerFolder string `json:"layer_folder,omitempty"`
// Layer paths of the parent layers
LayerPaths []string `json:"layer_paths,omitempty"`
// HvRuntime contains settings specific to Hyper-V containers, omitted if not using Hyper-V isolation
HvRuntime *HvRuntime `json:"hv_runtime,omitempty"`
}
// Process contains information to start a specific application inside the container.
type Process struct {
// Terminal indicates if stderr should NOT be attached for the container.
Terminal bool `json:"terminal"`
// ConsoleSize contains the initial h,w of the console size
InitialConsoleSize [2]int `json:"-"`
// User specifies user information for the process.
User User `json:"user"`
// Args specifies the binary and arguments for the application to execute.
Args []string `json:"args"`
// Env populates the process environment for the process.
Env []string `json:"env,omitempty"`
// Cwd is the current working directory for the process and must be
// relative to the container's root.
Cwd string `json:"cwd"`
}
// User contains the user information for Windows
type User struct {
User string `json:"user,omitempty"`
}
// Root contains information about the container's root filesystem on the host.
type Root struct {
// Path is the absolute path to the container's root filesystem.
Path string `json:"path"`
// Readonly makes the root filesystem for the container readonly before the process is executed.
Readonly bool `json:"readonly"`
}
// Platform specifies OS and arch information for the host system that the container
// is created for.
type Platform struct {
// OS is the operating system.
OS string `json:"os"`
// Arch is the architecture
Arch string `json:"arch"`
}
// Mount specifies a mount for a container.
type Mount struct {
// Destination is the path where the mount will be placed relative to the container's root. The path and child directories MUST exist, a runtime MUST NOT create directories automatically to a mount point.
Destination string `json:"destination"`
// Type specifies the mount kind.
Type string `json:"type"`
// Source specifies the source path of the mount. In the case of bind mounts
// this would be the file on the host.
Source string `json:"source"`
// Readonly specifies if the mount should be read-only
Readonly bool `json:"readonly"`
}
// HvRuntime contains settings specific to Hyper-V containers
type HvRuntime struct {
// ImagePath is the path to the Utility VM image for this container
ImagePath string `json:"image_path,omitempty"`
}
// Networking contains the platform specific network settings for the container
type Networking struct {
// TODO Windows TP5. The following three fields are for 'legacy' non-
// libnetwork networking through HCS. They can be removed once TP4 is
// no longer supported. Also remove in libcontainerd\client_windows.go,
// function Create(), and in daemon\oci_windows.go, function CreateSpec()
MacAddress string `json:"mac,omitempty"`
Bridge string `json:"bridge,omitempty"`
PortBindings nat.PortMap `json:"port_bindings,omitempty"`
// End of TODO Windows TP5.
// List of endpoints to be attached to the container
EndpointList []string `json:"endpoints,omitempty"`
}
// Storage contains storage resource management settings
type Storage struct {
// Specifies maximum Iops for the system drive
Iops *uint64 `json:"iops,omitempty"`
// Specifies maximum bytes per second for the system drive
Bps *uint64 `json:"bps,omitempty"`
// Sandbox size indicates the size to expand the system drive to if it is currently smaller
SandboxSize *uint64 `json:"sandbox_size,omitempty"`
}
// Memory contains memory settings for the container
type Memory struct {
// Memory limit (in bytes).
Limit *int64 `json:"limit,omitempty"`
// Memory reservation (in bytes).
Reservation *uint64 `json:"reservation,omitempty"`
}
// CPU contains information for cpu resource management
type CPU struct {
// Number of CPUs available to the container. This is an appoximation for Windows Server Containers.
Count *uint64 `json:"count,omitempty"`
// CPU shares (relative weight (ratio) vs. other containers with cpu shares). Range is from 1 to 10000.
Shares *uint64 `json:"shares,omitempty"`
// Percent of available CPUs usable by the container.
Percent *int64 `json:"percent,omitempty"`
}
// Network network resource management information
type Network struct {
// Bandwidth is the maximum egress bandwidth in bytes per second
Bandwidth *uint64 `json:"bandwidth,omitempty"`
}
// Resources has container runtime resource constraints
// TODO Windows containerd. This structure needs ratifying with the old resources
// structure used on Windows and the latest OCI spec.
type Resources struct {
// Memory restriction configuration
Memory *Memory `json:"memory,omitempty"`
// CPU resource restriction configuration
CPU *CPU `json:"cpu,omitempty"`
// Storage restriction configuration
Storage *Storage `json:"storage,omitempty"`
// Network restriction configuration
Network *Network `json:"network,omitempty"`
}
const (
// VersionMajor is for an API incompatible changes
VersionMajor = 0
// VersionMinor is for functionality in a backwards-compatible manner
VersionMinor = 3
// VersionPatch is for backwards-compatible bug fixes
VersionPatch = 0
// VersionDev indicates development branch. Releases will be empty string.
VersionDev = ""
)
// Version is the specification version that the package types support.
var Version = fmt.Sprintf("%d.%d.%d%s (Windows)", VersionMajor, VersionMinor, VersionPatch, VersionDev)

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// +build !windows
package windowsoci

23
oci/defaults_windows.go Normal file
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package oci
import (
"runtime"
"github.com/docker/docker/libcontainerd/windowsoci"
)
// DefaultSpec returns default spec used by docker.
func DefaultSpec() windowsoci.WindowsSpec {
s := windowsoci.Spec{
Version: windowsoci.Version,
Platform: windowsoci.Platform{
OS: runtime.GOOS,
Arch: runtime.GOARCH,
},
}
return windowsoci.WindowsSpec{
Spec: s,
Windows: windowsoci.Windows{},
}
}