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455 lines
12 KiB
Go
455 lines
12 KiB
Go
package daemon
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import (
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"encoding/json"
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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"github.com/Microsoft/hcsshim"
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"github.com/Sirupsen/logrus"
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"github.com/docker/docker/container"
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"github.com/docker/docker/daemon/graphdriver"
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"github.com/docker/docker/dockerversion"
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"github.com/docker/docker/image"
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"github.com/docker/docker/layer"
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"github.com/docker/docker/reference"
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"github.com/docker/docker/runconfig"
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// register the windows graph driver
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"github.com/docker/docker/daemon/graphdriver/windows"
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"github.com/docker/docker/pkg/idtools"
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"github.com/docker/docker/pkg/parsers"
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"github.com/docker/docker/pkg/system"
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"github.com/docker/engine-api/types"
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containertypes "github.com/docker/engine-api/types/container"
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"github.com/docker/libnetwork"
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nwconfig "github.com/docker/libnetwork/config"
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winlibnetwork "github.com/docker/libnetwork/drivers/windows"
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"github.com/docker/libnetwork/netlabel"
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"github.com/docker/libnetwork/options"
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blkiodev "github.com/opencontainers/runc/libcontainer/configs"
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)
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const (
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defaultVirtualSwitch = "Virtual Switch"
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defaultNetworkSpace = "172.16.0.0/12"
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platformSupported = true
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windowsMinCPUShares = 1
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windowsMaxCPUShares = 10000
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)
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func getBlkioWeightDevices(config *containertypes.HostConfig) ([]blkiodev.WeightDevice, error) {
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return nil, nil
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}
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func parseSecurityOpt(container *container.Container, config *containertypes.HostConfig) error {
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return nil
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}
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func getBlkioReadIOpsDevices(config *containertypes.HostConfig) ([]blkiodev.ThrottleDevice, error) {
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return nil, nil
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}
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func getBlkioWriteIOpsDevices(config *containertypes.HostConfig) ([]blkiodev.ThrottleDevice, error) {
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return nil, nil
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}
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func getBlkioReadBpsDevices(config *containertypes.HostConfig) ([]blkiodev.ThrottleDevice, error) {
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return nil, nil
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}
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func getBlkioWriteBpsDevices(config *containertypes.HostConfig) ([]blkiodev.ThrottleDevice, error) {
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return nil, nil
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}
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func setupInitLayer(initLayer string, rootUID, rootGID int) error {
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return nil
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}
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func checkKernel() error {
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return nil
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}
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func (daemon *Daemon) getCgroupDriver() string {
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return ""
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}
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// adaptContainerSettings is called during container creation to modify any
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// settings necessary in the HostConfig structure.
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func (daemon *Daemon) adaptContainerSettings(hostConfig *containertypes.HostConfig, adjustCPUShares bool) error {
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if hostConfig == nil {
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return nil
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}
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if hostConfig.CPUShares < 0 {
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logrus.Warnf("Changing requested CPUShares of %d to minimum allowed of %d", hostConfig.CPUShares, windowsMinCPUShares)
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hostConfig.CPUShares = windowsMinCPUShares
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} else if hostConfig.CPUShares > windowsMaxCPUShares {
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logrus.Warnf("Changing requested CPUShares of %d to maximum allowed of %d", hostConfig.CPUShares, windowsMaxCPUShares)
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hostConfig.CPUShares = windowsMaxCPUShares
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}
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return nil
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}
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// verifyPlatformContainerSettings performs platform-specific validation of the
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// hostconfig and config structures.
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func verifyPlatformContainerSettings(daemon *Daemon, hostConfig *containertypes.HostConfig, config *containertypes.Config, update bool) ([]string, error) {
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return nil, nil
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}
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// verifyDaemonSettings performs validation of daemon config struct
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func verifyDaemonSettings(config *Config) error {
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return nil
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}
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// checkSystem validates platform-specific requirements
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func checkSystem() error {
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// Validate the OS version. Note that docker.exe must be manifested for this
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// call to return the correct version.
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osv, err := system.GetOSVersion()
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if err != nil {
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return err
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}
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if osv.MajorVersion < 10 {
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return fmt.Errorf("This version of Windows does not support the docker daemon")
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}
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if osv.Build < 10586 {
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return fmt.Errorf("The Windows daemon requires Windows Server 2016 Technical Preview 4, build 10586 or later")
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}
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return nil
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}
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// configureKernelSecuritySupport configures and validate security support for the kernel
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func configureKernelSecuritySupport(config *Config, driverName string) error {
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return nil
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}
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// configureMaxThreads sets the Go runtime max threads threshold
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func configureMaxThreads(config *Config) error {
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return nil
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}
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func (daemon *Daemon) initNetworkController(config *Config) (libnetwork.NetworkController, error) {
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// TODO Windows: Remove this check once TP4 is no longer supported
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osv, err := system.GetOSVersion()
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if err != nil {
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return nil, err
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}
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if osv.Build < 14260 {
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// Set the name of the virtual switch if not specified by -b on daemon start
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if config.bridgeConfig.Iface == "" {
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config.bridgeConfig.Iface = defaultVirtualSwitch
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}
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logrus.Warnf("Network controller is not supported by the current platform build version")
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return nil, nil
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}
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netOptions, err := daemon.networkOptions(config)
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if err != nil {
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return nil, err
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}
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controller, err := libnetwork.New(netOptions...)
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if err != nil {
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return nil, fmt.Errorf("error obtaining controller instance: %v", err)
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}
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hnsresponse, err := hcsshim.HNSListNetworkRequest("GET", "", "")
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if err != nil {
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return nil, err
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}
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// Remove networks not present in HNS
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for _, v := range controller.Networks() {
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options := v.Info().DriverOptions()
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hnsid := options[winlibnetwork.HNSID]
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found := false
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for _, v := range hnsresponse {
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if v.Id == hnsid {
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found = true
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break
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}
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}
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if !found {
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err = v.Delete()
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if err != nil {
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return nil, err
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}
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}
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}
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_, err = controller.NewNetwork("null", "none", libnetwork.NetworkOptionPersist(false))
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if err != nil {
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return nil, err
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}
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// discover and add HNS networks to windows
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// network that exist are removed and added again
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for _, v := range hnsresponse {
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var n libnetwork.Network
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s := func(current libnetwork.Network) bool {
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options := current.Info().DriverOptions()
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if options[winlibnetwork.HNSID] == v.Id {
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n = current
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return true
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}
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return false
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}
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controller.WalkNetworks(s)
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if n != nil {
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v.Name = n.Name()
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n.Delete()
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}
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netOption := map[string]string{
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winlibnetwork.NetworkName: v.Name,
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winlibnetwork.HNSID: v.Id,
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}
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v4Conf := []*libnetwork.IpamConf{}
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for _, subnet := range v.Subnets {
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ipamV4Conf := libnetwork.IpamConf{}
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ipamV4Conf.PreferredPool = subnet.AddressPrefix
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ipamV4Conf.Gateway = subnet.GatewayAddress
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v4Conf = append(v4Conf, &ipamV4Conf)
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}
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name := v.Name
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// There is only one nat network supported in windows.
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// If it exists with a different name add it as the default name
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if runconfig.DefaultDaemonNetworkMode() == containertypes.NetworkMode(strings.ToLower(v.Type)) {
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name = runconfig.DefaultDaemonNetworkMode().NetworkName()
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}
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v6Conf := []*libnetwork.IpamConf{}
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_, err := controller.NewNetwork(strings.ToLower(v.Type), name,
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libnetwork.NetworkOptionGeneric(options.Generic{
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netlabel.GenericData: netOption,
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}),
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libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil),
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)
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if err != nil {
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logrus.Errorf("Error occurred when creating network %v", err)
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}
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}
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if !config.DisableBridge {
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// Initialize default driver "bridge"
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if err := initBridgeDriver(controller, config); err != nil {
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return nil, err
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}
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}
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return controller, nil
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}
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func initBridgeDriver(controller libnetwork.NetworkController, config *Config) error {
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if _, err := controller.NetworkByName(runconfig.DefaultDaemonNetworkMode().NetworkName()); err == nil {
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return nil
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}
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netOption := map[string]string{
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winlibnetwork.NetworkName: runconfig.DefaultDaemonNetworkMode().NetworkName(),
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}
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ipamV4Conf := libnetwork.IpamConf{}
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if config.bridgeConfig.FixedCIDR == "" {
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ipamV4Conf.PreferredPool = defaultNetworkSpace
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} else {
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ipamV4Conf.PreferredPool = config.bridgeConfig.FixedCIDR
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}
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v4Conf := []*libnetwork.IpamConf{&ipamV4Conf}
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v6Conf := []*libnetwork.IpamConf{}
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_, err := controller.NewNetwork(string(runconfig.DefaultDaemonNetworkMode()), runconfig.DefaultDaemonNetworkMode().NetworkName(),
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libnetwork.NetworkOptionGeneric(options.Generic{
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netlabel.GenericData: netOption,
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}),
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libnetwork.NetworkOptionIpam("default", "", v4Conf, v6Conf, nil),
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)
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if err != nil {
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return fmt.Errorf("Error creating default network: %v", err)
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}
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return nil
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}
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// registerLinks sets up links between containers and writes the
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// configuration out for persistence. As of Windows TP4, links are not supported.
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func (daemon *Daemon) registerLinks(container *container.Container, hostConfig *containertypes.HostConfig) error {
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return nil
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}
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func (daemon *Daemon) cleanupMountsByID(in string) error {
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return nil
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}
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func (daemon *Daemon) cleanupMounts() error {
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return nil
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}
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func setupRemappedRoot(config *Config) ([]idtools.IDMap, []idtools.IDMap, error) {
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return nil, nil, nil
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}
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func setupDaemonRoot(config *Config, rootDir string, rootUID, rootGID int) error {
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config.Root = rootDir
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// Create the root directory if it doesn't exists
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if err := system.MkdirAll(config.Root, 0700); err != nil && !os.IsExist(err) {
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return err
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}
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return nil
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}
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// runasHyperVContainer returns true if we are going to run as a Hyper-V container
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func (daemon *Daemon) runAsHyperVContainer(container *container.Container) bool {
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if container.HostConfig.Isolation.IsDefault() {
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// Container is set to use the default, so take the default from the daemon configuration
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return daemon.defaultIsolation.IsHyperV()
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}
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// Container is requesting an isolation mode. Honour it.
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return container.HostConfig.Isolation.IsHyperV()
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}
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// conditionalMountOnStart is a platform specific helper function during the
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// container start to call mount.
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func (daemon *Daemon) conditionalMountOnStart(container *container.Container) error {
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// We do not mount if a Hyper-V container
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if !daemon.runAsHyperVContainer(container) {
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return daemon.Mount(container)
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}
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return nil
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}
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// conditionalUnmountOnCleanup is a platform specific helper function called
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// during the cleanup of a container to unmount.
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func (daemon *Daemon) conditionalUnmountOnCleanup(container *container.Container) error {
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// We do not unmount if a Hyper-V container
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if !daemon.runAsHyperVContainer(container) {
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return daemon.Unmount(container)
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}
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return nil
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}
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func restoreCustomImage(is image.Store, ls layer.Store, rs reference.Store) error {
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type graphDriverStore interface {
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GraphDriver() graphdriver.Driver
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}
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gds, ok := ls.(graphDriverStore)
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if !ok {
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return nil
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}
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driver := gds.GraphDriver()
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wd, ok := driver.(*windows.Driver)
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if !ok {
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return nil
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}
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imageInfos, err := wd.GetCustomImageInfos()
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if err != nil {
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return err
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}
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// Convert imageData to valid image configuration
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for i := range imageInfos {
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name := strings.ToLower(imageInfos[i].Name)
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type registrar interface {
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RegisterDiffID(graphID string, size int64) (layer.Layer, error)
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}
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r, ok := ls.(registrar)
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if !ok {
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return errors.New("Layerstore doesn't support RegisterDiffID")
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}
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if _, err := r.RegisterDiffID(imageInfos[i].ID, imageInfos[i].Size); err != nil {
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return err
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}
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// layer is intentionally not released
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rootFS := image.NewRootFS()
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rootFS.BaseLayer = filepath.Base(imageInfos[i].Path)
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// Create history for base layer
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config, err := json.Marshal(&image.Image{
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V1Image: image.V1Image{
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DockerVersion: dockerversion.Version,
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Architecture: runtime.GOARCH,
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OS: runtime.GOOS,
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Created: imageInfos[i].CreatedTime,
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},
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RootFS: rootFS,
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History: []image.History{},
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})
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named, err := reference.ParseNamed(name)
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if err != nil {
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return err
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}
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ref, err := reference.WithTag(named, imageInfos[i].Version)
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if err != nil {
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return err
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}
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id, err := is.Create(config)
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if err != nil {
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return err
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}
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if err := rs.AddTag(ref, id, true); err != nil {
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return err
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}
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logrus.Debugf("Registered base layer %s as %s", ref, id)
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}
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return nil
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}
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func driverOptions(config *Config) []nwconfig.Option {
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return []nwconfig.Option{}
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}
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func (daemon *Daemon) stats(c *container.Container) (*types.StatsJSON, error) {
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return nil, nil
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}
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// setDefaultIsolation determine the default isolation mode for the
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// daemon to run in. This is only applicable on Windows
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func (daemon *Daemon) setDefaultIsolation() error {
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daemon.defaultIsolation = containertypes.Isolation("process")
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for _, option := range daemon.configStore.ExecOptions {
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key, val, err := parsers.ParseKeyValueOpt(option)
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if err != nil {
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return err
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}
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key = strings.ToLower(key)
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switch key {
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case "isolation":
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if !containertypes.Isolation(val).IsValid() {
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return fmt.Errorf("Invalid exec-opt value for 'isolation':'%s'", val)
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}
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if containertypes.Isolation(val).IsHyperV() {
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daemon.defaultIsolation = containertypes.Isolation("hyperv")
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}
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default:
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return fmt.Errorf("Unrecognised exec-opt '%s'\n", key)
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}
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}
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logrus.Infof("Windows default isolation mode: %s", daemon.defaultIsolation)
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return nil
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}
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