975 lines
28 KiB
Go
975 lines
28 KiB
Go
package container
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import (
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"encoding/json"
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"fmt"
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"io"
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"net"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"sync"
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"syscall"
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"time"
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"golang.org/x/net/context"
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"github.com/Sirupsen/logrus"
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"github.com/docker/docker/daemon/exec"
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"github.com/docker/docker/daemon/logger"
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"github.com/docker/docker/daemon/logger/jsonfilelog"
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"github.com/docker/docker/daemon/network"
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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/pkg/idtools"
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"github.com/docker/docker/pkg/ioutils"
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"github.com/docker/docker/pkg/promise"
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"github.com/docker/docker/pkg/signal"
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"github.com/docker/docker/pkg/symlink"
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"github.com/docker/docker/restartmanager"
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"github.com/docker/docker/runconfig"
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runconfigopts "github.com/docker/docker/runconfig/opts"
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"github.com/docker/docker/volume"
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containertypes "github.com/docker/engine-api/types/container"
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networktypes "github.com/docker/engine-api/types/network"
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"github.com/docker/go-connections/nat"
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"github.com/docker/libnetwork"
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"github.com/docker/libnetwork/netlabel"
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"github.com/docker/libnetwork/options"
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"github.com/docker/libnetwork/types"
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"github.com/opencontainers/runc/libcontainer/label"
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)
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const configFileName = "config.v2.json"
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var (
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errInvalidEndpoint = fmt.Errorf("invalid endpoint while building port map info")
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errInvalidNetwork = fmt.Errorf("invalid network settings while building port map info")
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)
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// DetachError is special error which returned in case of container detach.
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type DetachError struct{}
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func (DetachError) Error() string {
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return "detached from container"
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}
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// CommonContainer holds the fields for a container which are
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// applicable across all platforms supported by the daemon.
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type CommonContainer struct {
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*runconfig.StreamConfig
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// embed for Container to support states directly.
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*State `json:"State"` // Needed for remote api version <= 1.11
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Root string `json:"-"` // Path to the "home" of the container, including metadata.
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BaseFS string `json:"-"` // Path to the graphdriver mountpoint
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RWLayer layer.RWLayer `json:"-"`
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ID string
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Created time.Time
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Managed bool
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Path string
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Args []string
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Config *containertypes.Config
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ImageID image.ID `json:"Image"`
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NetworkSettings *network.Settings
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LogPath string
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Name string
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Driver string
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// MountLabel contains the options for the 'mount' command
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MountLabel string
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ProcessLabel string
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RestartCount int
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HasBeenStartedBefore bool
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HasBeenManuallyStopped bool // used for unless-stopped restart policy
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MountPoints map[string]*volume.MountPoint
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HostConfig *containertypes.HostConfig `json:"-"` // do not serialize the host config in the json, otherwise we'll make the container unportable
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ExecCommands *exec.Store `json:"-"`
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// logDriver for closing
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LogDriver logger.Logger `json:"-"`
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LogCopier *logger.Copier `json:"-"`
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restartManager restartmanager.RestartManager
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attachContext *attachContext
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}
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// NewBaseContainer creates a new container with its
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// basic configuration.
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func NewBaseContainer(id, root string) *Container {
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return &Container{
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CommonContainer: CommonContainer{
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ID: id,
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State: NewState(),
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ExecCommands: exec.NewStore(),
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Root: root,
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MountPoints: make(map[string]*volume.MountPoint),
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StreamConfig: runconfig.NewStreamConfig(),
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attachContext: &attachContext{},
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},
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}
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}
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// FromDisk loads the container configuration stored in the host.
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func (container *Container) FromDisk() error {
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pth, err := container.ConfigPath()
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if err != nil {
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return err
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}
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jsonSource, err := os.Open(pth)
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if err != nil {
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return err
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}
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defer jsonSource.Close()
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dec := json.NewDecoder(jsonSource)
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// Load container settings
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if err := dec.Decode(container); err != nil {
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return err
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}
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if err := label.ReserveLabel(container.ProcessLabel); err != nil {
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return err
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}
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return container.readHostConfig()
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}
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// ToDisk saves the container configuration on disk.
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func (container *Container) ToDisk() error {
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pth, err := container.ConfigPath()
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if err != nil {
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return err
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}
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jsonSource, err := ioutils.NewAtomicFileWriter(pth, 0666)
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if err != nil {
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return err
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}
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defer jsonSource.Close()
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enc := json.NewEncoder(jsonSource)
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// Save container settings
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if err := enc.Encode(container); err != nil {
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return err
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}
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return container.WriteHostConfig()
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}
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// ToDiskLocking saves the container configuration on disk in a thread safe way.
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func (container *Container) ToDiskLocking() error {
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container.Lock()
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err := container.ToDisk()
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container.Unlock()
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return err
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}
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// readHostConfig reads the host configuration from disk for the container.
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func (container *Container) readHostConfig() error {
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container.HostConfig = &containertypes.HostConfig{}
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// If the hostconfig file does not exist, do not read it.
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// (We still have to initialize container.HostConfig,
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// but that's OK, since we just did that above.)
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pth, err := container.HostConfigPath()
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if err != nil {
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return err
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}
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f, err := os.Open(pth)
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if err != nil {
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if os.IsNotExist(err) {
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return nil
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}
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return err
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}
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defer f.Close()
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if err := json.NewDecoder(f).Decode(&container.HostConfig); err != nil {
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return err
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}
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container.InitDNSHostConfig()
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return nil
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}
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// WriteHostConfig saves the host configuration on disk for the container.
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func (container *Container) WriteHostConfig() error {
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pth, err := container.HostConfigPath()
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if err != nil {
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return err
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}
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f, err := ioutils.NewAtomicFileWriter(pth, 0666)
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if err != nil {
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return err
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}
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defer f.Close()
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return json.NewEncoder(f).Encode(&container.HostConfig)
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}
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// SetupWorkingDirectory sets up the container's working directory as set in container.Config.WorkingDir
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func (container *Container) SetupWorkingDirectory(rootUID, rootGID int) error {
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if container.Config.WorkingDir == "" {
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return nil
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}
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container.Config.WorkingDir = filepath.Clean(container.Config.WorkingDir)
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// If can't mount container FS at this point (eg Hyper-V Containers on
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// Windows) bail out now with no action.
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if !container.canMountFS() {
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return nil
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}
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pth, err := container.GetResourcePath(container.Config.WorkingDir)
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if err != nil {
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return err
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}
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if err := idtools.MkdirAllNewAs(pth, 0755, rootUID, rootGID); err != nil {
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pthInfo, err2 := os.Stat(pth)
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if err2 == nil && pthInfo != nil && !pthInfo.IsDir() {
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return fmt.Errorf("Cannot mkdir: %s is not a directory", container.Config.WorkingDir)
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}
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return err
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}
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return nil
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}
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// GetResourcePath evaluates `path` in the scope of the container's BaseFS, with proper path
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// sanitisation. Symlinks are all scoped to the BaseFS of the container, as
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// though the container's BaseFS was `/`.
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//
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// The BaseFS of a container is the host-facing path which is bind-mounted as
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// `/` inside the container. This method is essentially used to access a
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// particular path inside the container as though you were a process in that
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// container.
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//
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// NOTE: The returned path is *only* safely scoped inside the container's BaseFS
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// if no component of the returned path changes (such as a component
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// symlinking to a different path) between using this method and using the
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// path. See symlink.FollowSymlinkInScope for more details.
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func (container *Container) GetResourcePath(path string) (string, error) {
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// IMPORTANT - These are paths on the OS where the daemon is running, hence
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// any filepath operations must be done in an OS agnostic way.
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cleanPath := cleanResourcePath(path)
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r, e := symlink.FollowSymlinkInScope(filepath.Join(container.BaseFS, cleanPath), container.BaseFS)
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// Log this here on the daemon side as there's otherwise no indication apart
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// from the error being propagated all the way back to the client. This makes
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// debugging significantly easier and clearly indicates the error comes from the daemon.
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if e != nil {
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logrus.Errorf("Failed to FollowSymlinkInScope BaseFS %s cleanPath %s path %s %s\n", container.BaseFS, cleanPath, path, e)
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}
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return r, e
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}
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// GetRootResourcePath evaluates `path` in the scope of the container's root, with proper path
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// sanitisation. Symlinks are all scoped to the root of the container, as
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// though the container's root was `/`.
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//
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// The root of a container is the host-facing configuration metadata directory.
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// Only use this method to safely access the container's `container.json` or
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// other metadata files. If in doubt, use container.GetResourcePath.
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//
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// NOTE: The returned path is *only* safely scoped inside the container's root
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// if no component of the returned path changes (such as a component
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// symlinking to a different path) between using this method and using the
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// path. See symlink.FollowSymlinkInScope for more details.
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func (container *Container) GetRootResourcePath(path string) (string, error) {
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// IMPORTANT - These are paths on the OS where the daemon is running, hence
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// any filepath operations must be done in an OS agnostic way.
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cleanPath := filepath.Join(string(os.PathSeparator), path)
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return symlink.FollowSymlinkInScope(filepath.Join(container.Root, cleanPath), container.Root)
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}
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// ExitOnNext signals to the monitor that it should not restart the container
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// after we send the kill signal.
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func (container *Container) ExitOnNext() {
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if container.restartManager != nil {
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container.restartManager.Cancel()
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}
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}
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// HostConfigPath returns the path to the container's JSON hostconfig
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func (container *Container) HostConfigPath() (string, error) {
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return container.GetRootResourcePath("hostconfig.json")
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}
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// ConfigPath returns the path to the container's JSON config
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func (container *Container) ConfigPath() (string, error) {
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return container.GetRootResourcePath(configFileName)
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}
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// StartLogger starts a new logger driver for the container.
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func (container *Container) StartLogger(cfg containertypes.LogConfig) (logger.Logger, error) {
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c, err := logger.GetLogDriver(cfg.Type)
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if err != nil {
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return nil, fmt.Errorf("Failed to get logging factory: %v", err)
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}
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ctx := logger.Context{
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Config: cfg.Config,
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ContainerID: container.ID,
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ContainerName: container.Name,
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ContainerEntrypoint: container.Path,
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ContainerArgs: container.Args,
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ContainerImageID: container.ImageID.String(),
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ContainerImageName: container.Config.Image,
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ContainerCreated: container.Created,
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ContainerEnv: container.Config.Env,
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ContainerLabels: container.Config.Labels,
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DaemonName: "docker",
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}
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// Set logging file for "json-logger"
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if cfg.Type == jsonfilelog.Name {
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ctx.LogPath, err = container.GetRootResourcePath(fmt.Sprintf("%s-json.log", container.ID))
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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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return c(ctx)
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}
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// GetProcessLabel returns the process label for the container.
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func (container *Container) GetProcessLabel() string {
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// even if we have a process label return "" if we are running
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// in privileged mode
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if container.HostConfig.Privileged {
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return ""
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}
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return container.ProcessLabel
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}
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// GetMountLabel returns the mounting label for the container.
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// This label is empty if the container is privileged.
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func (container *Container) GetMountLabel() string {
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return container.MountLabel
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}
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// GetExecIDs returns the list of exec commands running on the container.
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func (container *Container) GetExecIDs() []string {
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return container.ExecCommands.List()
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}
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// Attach connects to the container's TTY, delegating to standard
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// streams or websockets depending on the configuration.
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func (container *Container) Attach(stdin io.ReadCloser, stdout io.Writer, stderr io.Writer, keys []byte) chan error {
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ctx := container.InitAttachContext()
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return AttachStreams(ctx, container.StreamConfig, container.Config.OpenStdin, container.Config.StdinOnce, container.Config.Tty, stdin, stdout, stderr, keys)
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}
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// AttachStreams connects streams to a TTY.
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// Used by exec too. Should this move somewhere else?
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func AttachStreams(ctx context.Context, streamConfig *runconfig.StreamConfig, openStdin, stdinOnce, tty bool, stdin io.ReadCloser, stdout io.Writer, stderr io.Writer, keys []byte) chan error {
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var (
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cStdout, cStderr io.ReadCloser
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cStdin io.WriteCloser
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wg sync.WaitGroup
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errors = make(chan error, 3)
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)
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if stdin != nil && openStdin {
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cStdin = streamConfig.StdinPipe()
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wg.Add(1)
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}
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if stdout != nil {
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cStdout = streamConfig.StdoutPipe()
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wg.Add(1)
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}
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if stderr != nil {
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cStderr = streamConfig.StderrPipe()
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wg.Add(1)
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}
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// Connect stdin of container to the http conn.
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go func() {
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if stdin == nil || !openStdin {
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return
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}
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logrus.Debug("attach: stdin: begin")
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var err error
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if tty {
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_, err = copyEscapable(cStdin, stdin, keys)
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} else {
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_, err = io.Copy(cStdin, stdin)
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}
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if err == io.ErrClosedPipe {
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err = nil
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}
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if err != nil {
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logrus.Errorf("attach: stdin: %s", err)
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errors <- err
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}
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if stdinOnce && !tty {
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cStdin.Close()
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} else {
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// No matter what, when stdin is closed (io.Copy unblock), close stdout and stderr
|
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if cStdout != nil {
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cStdout.Close()
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}
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if cStderr != nil {
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cStderr.Close()
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}
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}
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logrus.Debug("attach: stdin: end")
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wg.Done()
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}()
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|
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attachStream := func(name string, stream io.Writer, streamPipe io.ReadCloser) {
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if stream == nil {
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return
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}
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logrus.Debugf("attach: %s: begin", name)
|
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_, err := io.Copy(stream, streamPipe)
|
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if err == io.ErrClosedPipe {
|
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err = nil
|
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}
|
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if err != nil {
|
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logrus.Errorf("attach: %s: %v", name, err)
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errors <- err
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}
|
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// Make sure stdin gets closed
|
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if stdin != nil {
|
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stdin.Close()
|
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}
|
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streamPipe.Close()
|
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logrus.Debugf("attach: %s: end", name)
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wg.Done()
|
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}
|
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|
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go attachStream("stdout", stdout, cStdout)
|
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go attachStream("stderr", stderr, cStderr)
|
|
|
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return promise.Go(func() error {
|
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done := make(chan struct{})
|
|
go func() {
|
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wg.Wait()
|
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close(done)
|
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}()
|
|
select {
|
|
case <-done:
|
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case <-ctx.Done():
|
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// close all pipes
|
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if cStdin != nil {
|
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cStdin.Close()
|
|
}
|
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if cStdout != nil {
|
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cStdout.Close()
|
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}
|
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if cStderr != nil {
|
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cStderr.Close()
|
|
}
|
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<-done
|
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}
|
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close(errors)
|
|
for err := range errors {
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
})
|
|
}
|
|
|
|
// Code c/c from io.Copy() modified to handle escape sequence
|
|
func copyEscapable(dst io.Writer, src io.ReadCloser, keys []byte) (written int64, err error) {
|
|
if len(keys) == 0 {
|
|
// Default keys : ctrl-p ctrl-q
|
|
keys = []byte{16, 17}
|
|
}
|
|
buf := make([]byte, 32*1024)
|
|
for {
|
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nr, er := src.Read(buf)
|
|
if nr > 0 {
|
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// ---- Docker addition
|
|
preservBuf := []byte{}
|
|
for i, key := range keys {
|
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preservBuf = append(preservBuf, buf[0:nr]...)
|
|
if nr != 1 || buf[0] != key {
|
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break
|
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}
|
|
if i == len(keys)-1 {
|
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src.Close()
|
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return 0, DetachError{}
|
|
}
|
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nr, er = src.Read(buf)
|
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}
|
|
var nw int
|
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var ew error
|
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if len(preservBuf) > 0 {
|
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nw, ew = dst.Write(preservBuf)
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nr = len(preservBuf)
|
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} else {
|
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// ---- End of docker
|
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nw, ew = dst.Write(buf[0:nr])
|
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}
|
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if nw > 0 {
|
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written += int64(nw)
|
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}
|
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if ew != nil {
|
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err = ew
|
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break
|
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}
|
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if nr != nw {
|
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err = io.ErrShortWrite
|
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break
|
|
}
|
|
}
|
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if er == io.EOF {
|
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break
|
|
}
|
|
if er != nil {
|
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err = er
|
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break
|
|
}
|
|
}
|
|
return written, err
|
|
}
|
|
|
|
// ShouldRestart decides whether the daemon should restart the container or not.
|
|
// This is based on the container's restart policy.
|
|
func (container *Container) ShouldRestart() bool {
|
|
shouldRestart, _, _ := container.restartManager.ShouldRestart(uint32(container.ExitCode()), container.HasBeenManuallyStopped, container.FinishedAt.Sub(container.StartedAt))
|
|
return shouldRestart
|
|
}
|
|
|
|
// AddMountPointWithVolume adds a new mount point configured with a volume to the container.
|
|
func (container *Container) AddMountPointWithVolume(destination string, vol volume.Volume, rw bool) {
|
|
container.MountPoints[destination] = &volume.MountPoint{
|
|
Name: vol.Name(),
|
|
Driver: vol.DriverName(),
|
|
Destination: destination,
|
|
RW: rw,
|
|
Volume: vol,
|
|
CopyData: volume.DefaultCopyMode,
|
|
}
|
|
}
|
|
|
|
// IsDestinationMounted checks whether a path is mounted on the container or not.
|
|
func (container *Container) IsDestinationMounted(destination string) bool {
|
|
return container.MountPoints[destination] != nil
|
|
}
|
|
|
|
// StopSignal returns the signal used to stop the container.
|
|
func (container *Container) StopSignal() int {
|
|
var stopSignal syscall.Signal
|
|
if container.Config.StopSignal != "" {
|
|
stopSignal, _ = signal.ParseSignal(container.Config.StopSignal)
|
|
}
|
|
|
|
if int(stopSignal) == 0 {
|
|
stopSignal, _ = signal.ParseSignal(signal.DefaultStopSignal)
|
|
}
|
|
return int(stopSignal)
|
|
}
|
|
|
|
// InitDNSHostConfig ensures that the dns fields are never nil.
|
|
// New containers don't ever have those fields nil,
|
|
// but pre created containers can still have those nil values.
|
|
// The non-recommended host configuration in the start api can
|
|
// make these fields nil again, this corrects that issue until
|
|
// we remove that behavior for good.
|
|
// See https://github.com/docker/docker/pull/17779
|
|
// for a more detailed explanation on why we don't want that.
|
|
func (container *Container) InitDNSHostConfig() {
|
|
container.Lock()
|
|
defer container.Unlock()
|
|
if container.HostConfig.DNS == nil {
|
|
container.HostConfig.DNS = make([]string, 0)
|
|
}
|
|
|
|
if container.HostConfig.DNSSearch == nil {
|
|
container.HostConfig.DNSSearch = make([]string, 0)
|
|
}
|
|
|
|
if container.HostConfig.DNSOptions == nil {
|
|
container.HostConfig.DNSOptions = make([]string, 0)
|
|
}
|
|
}
|
|
|
|
// GetEndpointInNetwork returns the container's endpoint to the provided network.
|
|
func (container *Container) GetEndpointInNetwork(n libnetwork.Network) (libnetwork.Endpoint, error) {
|
|
endpointName := strings.TrimPrefix(container.Name, "/")
|
|
return n.EndpointByName(endpointName)
|
|
}
|
|
|
|
func (container *Container) buildPortMapInfo(ep libnetwork.Endpoint) error {
|
|
if ep == nil {
|
|
return errInvalidEndpoint
|
|
}
|
|
|
|
networkSettings := container.NetworkSettings
|
|
if networkSettings == nil {
|
|
return errInvalidNetwork
|
|
}
|
|
|
|
if len(networkSettings.Ports) == 0 {
|
|
pm, err := getEndpointPortMapInfo(ep)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
networkSettings.Ports = pm
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func getEndpointPortMapInfo(ep libnetwork.Endpoint) (nat.PortMap, error) {
|
|
pm := nat.PortMap{}
|
|
driverInfo, err := ep.DriverInfo()
|
|
if err != nil {
|
|
return pm, err
|
|
}
|
|
|
|
if driverInfo == nil {
|
|
// It is not an error for epInfo to be nil
|
|
return pm, nil
|
|
}
|
|
|
|
if expData, ok := driverInfo[netlabel.ExposedPorts]; ok {
|
|
if exposedPorts, ok := expData.([]types.TransportPort); ok {
|
|
for _, tp := range exposedPorts {
|
|
natPort, err := nat.NewPort(tp.Proto.String(), strconv.Itoa(int(tp.Port)))
|
|
if err != nil {
|
|
return pm, fmt.Errorf("Error parsing Port value(%v):%v", tp.Port, err)
|
|
}
|
|
pm[natPort] = nil
|
|
}
|
|
}
|
|
}
|
|
|
|
mapData, ok := driverInfo[netlabel.PortMap]
|
|
if !ok {
|
|
return pm, nil
|
|
}
|
|
|
|
if portMapping, ok := mapData.([]types.PortBinding); ok {
|
|
for _, pp := range portMapping {
|
|
natPort, err := nat.NewPort(pp.Proto.String(), strconv.Itoa(int(pp.Port)))
|
|
if err != nil {
|
|
return pm, err
|
|
}
|
|
natBndg := nat.PortBinding{HostIP: pp.HostIP.String(), HostPort: strconv.Itoa(int(pp.HostPort))}
|
|
pm[natPort] = append(pm[natPort], natBndg)
|
|
}
|
|
}
|
|
|
|
return pm, nil
|
|
}
|
|
|
|
// GetSandboxPortMapInfo retrieves the current port-mapping programmed for the given sandbox
|
|
func GetSandboxPortMapInfo(sb libnetwork.Sandbox) nat.PortMap {
|
|
pm := nat.PortMap{}
|
|
if sb == nil {
|
|
return pm
|
|
}
|
|
|
|
for _, ep := range sb.Endpoints() {
|
|
pm, _ = getEndpointPortMapInfo(ep)
|
|
if len(pm) > 0 {
|
|
break
|
|
}
|
|
}
|
|
return pm
|
|
}
|
|
|
|
// BuildEndpointInfo sets endpoint-related fields on container.NetworkSettings based on the provided network and endpoint.
|
|
func (container *Container) BuildEndpointInfo(n libnetwork.Network, ep libnetwork.Endpoint) error {
|
|
if ep == nil {
|
|
return errInvalidEndpoint
|
|
}
|
|
|
|
networkSettings := container.NetworkSettings
|
|
if networkSettings == nil {
|
|
return errInvalidNetwork
|
|
}
|
|
|
|
epInfo := ep.Info()
|
|
if epInfo == nil {
|
|
// It is not an error to get an empty endpoint info
|
|
return nil
|
|
}
|
|
|
|
if _, ok := networkSettings.Networks[n.Name()]; !ok {
|
|
networkSettings.Networks[n.Name()] = new(networktypes.EndpointSettings)
|
|
}
|
|
networkSettings.Networks[n.Name()].NetworkID = n.ID()
|
|
networkSettings.Networks[n.Name()].EndpointID = ep.ID()
|
|
|
|
iface := epInfo.Iface()
|
|
if iface == nil {
|
|
return nil
|
|
}
|
|
|
|
if iface.MacAddress() != nil {
|
|
networkSettings.Networks[n.Name()].MacAddress = iface.MacAddress().String()
|
|
}
|
|
|
|
if iface.Address() != nil {
|
|
ones, _ := iface.Address().Mask.Size()
|
|
networkSettings.Networks[n.Name()].IPAddress = iface.Address().IP.String()
|
|
networkSettings.Networks[n.Name()].IPPrefixLen = ones
|
|
}
|
|
|
|
if iface.AddressIPv6() != nil && iface.AddressIPv6().IP.To16() != nil {
|
|
onesv6, _ := iface.AddressIPv6().Mask.Size()
|
|
networkSettings.Networks[n.Name()].GlobalIPv6Address = iface.AddressIPv6().IP.String()
|
|
networkSettings.Networks[n.Name()].GlobalIPv6PrefixLen = onesv6
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// UpdateJoinInfo updates network settings when container joins network n with endpoint ep.
|
|
func (container *Container) UpdateJoinInfo(n libnetwork.Network, ep libnetwork.Endpoint) error {
|
|
if err := container.buildPortMapInfo(ep); err != nil {
|
|
return err
|
|
}
|
|
|
|
epInfo := ep.Info()
|
|
if epInfo == nil {
|
|
// It is not an error to get an empty endpoint info
|
|
return nil
|
|
}
|
|
if epInfo.Gateway() != nil {
|
|
container.NetworkSettings.Networks[n.Name()].Gateway = epInfo.Gateway().String()
|
|
}
|
|
if epInfo.GatewayIPv6().To16() != nil {
|
|
container.NetworkSettings.Networks[n.Name()].IPv6Gateway = epInfo.GatewayIPv6().String()
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// UpdateSandboxNetworkSettings updates the sandbox ID and Key.
|
|
func (container *Container) UpdateSandboxNetworkSettings(sb libnetwork.Sandbox) error {
|
|
container.NetworkSettings.SandboxID = sb.ID()
|
|
container.NetworkSettings.SandboxKey = sb.Key()
|
|
return nil
|
|
}
|
|
|
|
// BuildJoinOptions builds endpoint Join options from a given network.
|
|
func (container *Container) BuildJoinOptions(n libnetwork.Network) ([]libnetwork.EndpointOption, error) {
|
|
var joinOptions []libnetwork.EndpointOption
|
|
if epConfig, ok := container.NetworkSettings.Networks[n.Name()]; ok {
|
|
for _, str := range epConfig.Links {
|
|
name, alias, err := runconfigopts.ParseLink(str)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
joinOptions = append(joinOptions, libnetwork.CreateOptionAlias(name, alias))
|
|
}
|
|
}
|
|
return joinOptions, nil
|
|
}
|
|
|
|
// BuildCreateEndpointOptions builds endpoint options from a given network.
|
|
func (container *Container) BuildCreateEndpointOptions(n libnetwork.Network, epConfig *networktypes.EndpointSettings, sb libnetwork.Sandbox) ([]libnetwork.EndpointOption, error) {
|
|
var (
|
|
bindings = make(nat.PortMap)
|
|
pbList []types.PortBinding
|
|
exposeList []types.TransportPort
|
|
createOptions []libnetwork.EndpointOption
|
|
)
|
|
|
|
defaultNetName := runconfig.DefaultDaemonNetworkMode().NetworkName()
|
|
|
|
if n.Name() == defaultNetName || container.NetworkSettings.IsAnonymousEndpoint {
|
|
createOptions = append(createOptions, libnetwork.CreateOptionAnonymous())
|
|
}
|
|
|
|
if epConfig != nil {
|
|
ipam := epConfig.IPAMConfig
|
|
if ipam != nil && (ipam.IPv4Address != "" || ipam.IPv6Address != "" || len(ipam.LinkLocalIPs) > 0) {
|
|
var ipList []net.IP
|
|
for _, ips := range ipam.LinkLocalIPs {
|
|
if ip := net.ParseIP(ips); ip != nil {
|
|
ipList = append(ipList, ip)
|
|
}
|
|
}
|
|
createOptions = append(createOptions,
|
|
libnetwork.CreateOptionIpam(net.ParseIP(ipam.IPv4Address), net.ParseIP(ipam.IPv6Address), ipList, nil))
|
|
}
|
|
|
|
for _, alias := range epConfig.Aliases {
|
|
createOptions = append(createOptions, libnetwork.CreateOptionMyAlias(alias))
|
|
}
|
|
}
|
|
|
|
if container.NetworkSettings.Service != nil {
|
|
svcCfg := container.NetworkSettings.Service
|
|
|
|
var vip string
|
|
if svcCfg.VirtualAddresses[n.ID()] != nil {
|
|
vip = svcCfg.VirtualAddresses[n.ID()].IPv4
|
|
}
|
|
|
|
var portConfigs []*libnetwork.PortConfig
|
|
for _, portConfig := range svcCfg.ExposedPorts {
|
|
portConfigs = append(portConfigs, &libnetwork.PortConfig{
|
|
Name: portConfig.Name,
|
|
Protocol: libnetwork.PortConfig_Protocol(portConfig.Protocol),
|
|
TargetPort: portConfig.TargetPort,
|
|
PublishedPort: portConfig.PublishedPort,
|
|
})
|
|
}
|
|
|
|
createOptions = append(createOptions, libnetwork.CreateOptionService(svcCfg.Name, svcCfg.ID, net.ParseIP(vip), portConfigs))
|
|
}
|
|
|
|
if !containertypes.NetworkMode(n.Name()).IsUserDefined() {
|
|
createOptions = append(createOptions, libnetwork.CreateOptionDisableResolution())
|
|
}
|
|
|
|
// configs that are applicable only for the endpoint in the network
|
|
// to which container was connected to on docker run.
|
|
// Ideally all these network-specific endpoint configurations must be moved under
|
|
// container.NetworkSettings.Networks[n.Name()]
|
|
if n.Name() == container.HostConfig.NetworkMode.NetworkName() ||
|
|
(n.Name() == defaultNetName && container.HostConfig.NetworkMode.IsDefault()) {
|
|
if container.Config.MacAddress != "" {
|
|
mac, err := net.ParseMAC(container.Config.MacAddress)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
genericOption := options.Generic{
|
|
netlabel.MacAddress: mac,
|
|
}
|
|
|
|
createOptions = append(createOptions, libnetwork.EndpointOptionGeneric(genericOption))
|
|
}
|
|
}
|
|
|
|
// Port-mapping rules belong to the container & applicable only to non-internal networks
|
|
portmaps := GetSandboxPortMapInfo(sb)
|
|
if n.Info().Internal() || len(portmaps) > 0 {
|
|
return createOptions, nil
|
|
}
|
|
|
|
if container.HostConfig.PortBindings != nil {
|
|
for p, b := range container.HostConfig.PortBindings {
|
|
bindings[p] = []nat.PortBinding{}
|
|
for _, bb := range b {
|
|
bindings[p] = append(bindings[p], nat.PortBinding{
|
|
HostIP: bb.HostIP,
|
|
HostPort: bb.HostPort,
|
|
})
|
|
}
|
|
}
|
|
}
|
|
|
|
portSpecs := container.Config.ExposedPorts
|
|
ports := make([]nat.Port, len(portSpecs))
|
|
var i int
|
|
for p := range portSpecs {
|
|
ports[i] = p
|
|
i++
|
|
}
|
|
nat.SortPortMap(ports, bindings)
|
|
for _, port := range ports {
|
|
expose := types.TransportPort{}
|
|
expose.Proto = types.ParseProtocol(port.Proto())
|
|
expose.Port = uint16(port.Int())
|
|
exposeList = append(exposeList, expose)
|
|
|
|
pb := types.PortBinding{Port: expose.Port, Proto: expose.Proto}
|
|
binding := bindings[port]
|
|
for i := 0; i < len(binding); i++ {
|
|
pbCopy := pb.GetCopy()
|
|
newP, err := nat.NewPort(nat.SplitProtoPort(binding[i].HostPort))
|
|
var portStart, portEnd int
|
|
if err == nil {
|
|
portStart, portEnd, err = newP.Range()
|
|
}
|
|
if err != nil {
|
|
return nil, fmt.Errorf("Error parsing HostPort value(%s):%v", binding[i].HostPort, err)
|
|
}
|
|
pbCopy.HostPort = uint16(portStart)
|
|
pbCopy.HostPortEnd = uint16(portEnd)
|
|
pbCopy.HostIP = net.ParseIP(binding[i].HostIP)
|
|
pbList = append(pbList, pbCopy)
|
|
}
|
|
|
|
if container.HostConfig.PublishAllPorts && len(binding) == 0 {
|
|
pbList = append(pbList, pb)
|
|
}
|
|
}
|
|
|
|
createOptions = append(createOptions,
|
|
libnetwork.CreateOptionPortMapping(pbList),
|
|
libnetwork.CreateOptionExposedPorts(exposeList))
|
|
|
|
return createOptions, nil
|
|
}
|
|
|
|
// UpdateMonitor updates monitor configure for running container
|
|
func (container *Container) UpdateMonitor(restartPolicy containertypes.RestartPolicy) {
|
|
type policySetter interface {
|
|
SetPolicy(containertypes.RestartPolicy)
|
|
}
|
|
|
|
if rm, ok := container.RestartManager(false).(policySetter); ok {
|
|
rm.SetPolicy(restartPolicy)
|
|
}
|
|
}
|
|
|
|
// FullHostname returns hostname and optional domain appended to it.
|
|
func (container *Container) FullHostname() string {
|
|
fullHostname := container.Config.Hostname
|
|
if container.Config.Domainname != "" {
|
|
fullHostname = fmt.Sprintf("%s.%s", fullHostname, container.Config.Domainname)
|
|
}
|
|
return fullHostname
|
|
}
|
|
|
|
// RestartManager returns the current restartmanager instance connected to container.
|
|
func (container *Container) RestartManager(reset bool) restartmanager.RestartManager {
|
|
if reset {
|
|
container.RestartCount = 0
|
|
container.restartManager = nil
|
|
}
|
|
if container.restartManager == nil {
|
|
container.restartManager = restartmanager.New(container.HostConfig.RestartPolicy, container.RestartCount)
|
|
}
|
|
|
|
return container.restartManager
|
|
}
|
|
|
|
type attachContext struct {
|
|
ctx context.Context
|
|
cancel context.CancelFunc
|
|
mu sync.Mutex
|
|
}
|
|
|
|
// InitAttachContext initialize or returns existing context for attach calls to
|
|
// track container liveness.
|
|
func (container *Container) InitAttachContext() context.Context {
|
|
container.attachContext.mu.Lock()
|
|
defer container.attachContext.mu.Unlock()
|
|
if container.attachContext.ctx == nil {
|
|
container.attachContext.ctx, container.attachContext.cancel = context.WithCancel(context.Background())
|
|
}
|
|
return container.attachContext.ctx
|
|
}
|
|
|
|
// CancelAttachContext cancel attach context. All attach calls should detach
|
|
// after this call.
|
|
func (container *Container) CancelAttachContext() {
|
|
container.attachContext.mu.Lock()
|
|
if container.attachContext.ctx != nil {
|
|
container.attachContext.cancel()
|
|
container.attachContext.ctx = nil
|
|
}
|
|
container.attachContext.mu.Unlock()
|
|
}
|