2015-11-12 19:55:17 +00:00
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package container
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2013-01-19 00:13:39 +00:00
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import (
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"encoding/json"
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2013-03-21 07:25:00 +00:00
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"fmt"
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2014-04-28 21:36:04 +00:00
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"io"
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"os"
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2014-05-11 20:49:46 +00:00
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"path/filepath"
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2015-05-05 20:25:05 +00:00
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"sync"
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2014-04-28 21:36:04 +00:00
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"syscall"
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"time"
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2015-03-26 22:22:04 +00:00
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"github.com/Sirupsen/logrus"
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2015-11-20 22:35:16 +00:00
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"github.com/docker/docker/daemon/exec"
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2014-07-24 22:19:50 +00:00
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"github.com/docker/docker/daemon/execdriver"
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2015-02-04 19:04:58 +00:00
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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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2015-04-04 04:06:48 +00:00
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"github.com/docker/docker/daemon/network"
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2015-09-17 18:54:14 +00:00
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derr "github.com/docker/docker/errors"
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2015-11-18 22:20:54 +00:00
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"github.com/docker/docker/image"
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"github.com/docker/docker/layer"
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2015-06-30 16:41:01 +00:00
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"github.com/docker/docker/pkg/nat"
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2014-09-30 06:16:27 +00:00
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"github.com/docker/docker/pkg/promise"
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2015-08-04 20:51:48 +00:00
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"github.com/docker/docker/pkg/signal"
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2014-07-24 22:19:50 +00:00
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"github.com/docker/docker/pkg/symlink"
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"github.com/docker/docker/runconfig"
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2015-05-19 20:05:25 +00:00
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"github.com/docker/docker/volume"
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2015-11-12 19:55:17 +00:00
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"github.com/opencontainers/runc/libcontainer/label"
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2013-01-19 00:13:39 +00:00
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)
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2015-11-18 22:20:54 +00:00
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const configFileName = "config.v2.json"
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2015-07-30 21:01:53 +00:00
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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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2015-04-29 22:53:35 +00:00
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type CommonContainer struct {
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2015-11-18 00:21:44 +00:00
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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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2015-11-12 19:55:17 +00:00
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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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2015-07-30 21:01:53 +00:00
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ID string
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Created time.Time
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Path string
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Args []string
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Config *runconfig.Config
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2015-11-18 22:20:54 +00:00
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ImageID image.ID `json:"Image"`
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2015-07-30 21:01:53 +00:00
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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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2015-09-10 02:23:06 +00:00
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MountPoints map[string]*volume.MountPoint
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2015-11-12 19:55:17 +00:00
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HostConfig *runconfig.HostConfig `json:"-"` // do not serialize the host config in the json, otherwise we'll make the container unportable
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Command *execdriver.Command `json:"-"`
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2015-07-30 21:01:53 +00:00
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monitor *containerMonitor
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2015-11-12 19:55:17 +00:00
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ExecCommands *exec.Store `json:"-"`
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2015-02-04 19:04:58 +00:00
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// logDriver for closing
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2015-11-12 19:55:17 +00:00
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LogDriver logger.Logger `json:"-"`
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LogCopier *logger.Copier `json:"-"`
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2013-01-19 00:13:39 +00:00
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}
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2015-11-12 19:55:17 +00:00
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// NewBaseContainer creates a new container with its
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2015-11-18 10:04:23 +00:00
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// basic configuration.
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2015-11-12 19:55:17 +00:00
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func NewBaseContainer(id, root string) *Container {
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2015-11-18 10:04:23 +00:00
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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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2015-11-12 19:55:17 +00:00
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ExecCommands: exec.NewStore(),
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Root: root,
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2015-11-18 10:04:23 +00:00
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MountPoints: make(map[string]*volume.MountPoint),
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2015-11-18 00:21:44 +00:00
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StreamConfig: runconfig.NewStreamConfig(),
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2015-11-18 10:04:23 +00:00
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},
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}
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}
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2015-11-12 19:55:17 +00:00
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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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2014-05-28 02:15:42 +00:00
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if err != nil {
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return err
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}
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2014-11-04 13:43:58 +00:00
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jsonSource, err := os.Open(pth)
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2013-01-25 22:39:02 +00:00
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if err != nil {
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return err
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}
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2014-11-04 13:43:58 +00:00
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defer jsonSource.Close()
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dec := json.NewDecoder(jsonSource)
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2013-03-21 07:25:00 +00:00
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// Load container settings
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2015-09-03 09:01:55 +00:00
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if err := dec.Decode(container); err != nil {
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2013-01-25 22:39:02 +00:00
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return err
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}
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2014-04-28 21:36:04 +00:00
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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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2013-10-31 21:58:43 +00:00
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return container.readHostConfig()
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2013-01-25 22:39:02 +00:00
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}
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2015-11-12 19:55:17 +00:00
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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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2013-01-19 00:13:39 +00:00
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if err != nil {
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2014-05-28 02:15:42 +00:00
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return err
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2013-01-19 00:13:39 +00:00
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}
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2014-05-28 02:15:42 +00:00
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2015-10-30 16:04:25 +00:00
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jsonSource, err := os.Create(pth)
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2013-10-31 21:58:43 +00:00
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if err != nil {
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2014-05-28 02:15:42 +00:00
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return err
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}
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2015-10-30 16:04:25 +00:00
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defer jsonSource.Close()
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enc := json.NewEncoder(jsonSource)
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2014-05-28 02:15:42 +00:00
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2015-10-30 16:04:25 +00:00
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// Save container settings
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if err := enc.Encode(container); err != nil {
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2014-05-28 02:15:42 +00:00
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return err
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2013-10-31 21:58:43 +00:00
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}
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2014-05-28 02:15:42 +00:00
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2015-11-12 19:55:17 +00:00
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return container.WriteHostConfig()
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2013-01-19 00:13:39 +00:00
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}
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2015-11-12 19:55:17 +00:00
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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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2014-07-11 17:49:24 +00:00
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container.Lock()
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2015-11-12 19:55:17 +00:00
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err := container.ToDisk()
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2014-07-11 17:49:24 +00:00
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container.Unlock()
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return err
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}
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2015-11-12 19:55:17 +00:00
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// readHostConfig reads the host configuration from disk for the container.
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2013-10-31 21:58:43 +00:00
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func (container *Container) readHostConfig() error {
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2015-11-12 19:55:17 +00:00
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container.HostConfig = &runconfig.HostConfig{}
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2013-10-31 21:58:43 +00:00
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// If the hostconfig file does not exist, do not read it.
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2015-11-12 19:55:17 +00:00
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// (We still have to initialize container.HostConfig,
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2013-10-31 21:58:43 +00:00
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// but that's OK, since we just did that above.)
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2015-11-12 19:55:17 +00:00
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pth, err := container.HostConfigPath()
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2014-05-28 02:15:42 +00:00
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if err != nil {
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return err
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}
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2015-04-21 19:59:59 +00:00
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f, err := os.Open(pth)
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2013-07-02 12:19:25 +00:00
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if err != nil {
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2015-10-30 21:54:09 +00:00
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if os.IsNotExist(err) {
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return nil
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}
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2013-10-31 21:58:43 +00:00
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return err
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2013-07-02 12:19:25 +00:00
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}
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2015-04-21 19:59:59 +00:00
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defer f.Close()
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2015-11-12 19:55:17 +00:00
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if err := json.NewDecoder(f).Decode(&container.HostConfig); err != nil {
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2015-11-06 22:22:48 +00:00
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return err
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}
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2015-11-12 19:55:17 +00:00
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container.InitDNSHostConfig()
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2015-11-06 22:22:48 +00:00
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return nil
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2013-07-02 12:19:25 +00:00
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}
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2015-11-12 19:55:17 +00:00
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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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2013-07-02 12:19:25 +00:00
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if err != nil {
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2014-05-28 02:15:42 +00:00
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return err
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2013-07-02 12:19:25 +00:00
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}
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2014-05-28 02:15:42 +00:00
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2015-10-30 21:45:35 +00:00
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f, err := os.Create(pth)
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2014-05-28 02:15:42 +00:00
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if err != nil {
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return err
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}
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2015-10-30 21:45:35 +00:00
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defer f.Close()
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2014-05-28 02:15:42 +00:00
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2015-11-12 19:55:17 +00:00
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return json.NewEncoder(f).Encode(&container.HostConfig)
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2013-07-02 12:19:25 +00:00
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}
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2015-11-12 19:55:17 +00:00
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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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2015-03-06 01:53:06 +00:00
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//
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2015-11-12 19:55:17 +00:00
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// The BaseFS of a container is the host-facing path which is bind-mounted as
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2015-03-06 01:53:06 +00:00
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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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2015-11-12 19:55:17 +00:00
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// NOTE: The returned path is *only* safely scoped inside the container's BaseFS
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2015-03-06 01:53:06 +00:00
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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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2015-06-01 23:42:27 +00:00
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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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2015-11-12 19:55:17 +00:00
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r, e := symlink.FollowSymlinkInScope(filepath.Join(container.BaseFS, cleanPath), container.BaseFS)
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2015-06-01 23:42:27 +00:00
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return r, e
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2014-05-11 20:49:46 +00:00
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}
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2015-11-12 19:55:17 +00:00
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// GetRootResourcePath evaluates `path` in the scope of the container's root, with proper path
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2015-03-06 01:53:06 +00:00
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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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2015-11-12 19:55:17 +00:00
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func (container *Container) GetRootResourcePath(path string) (string, error) {
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2015-06-01 23:42:27 +00:00
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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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2015-11-12 19:55:17 +00:00
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return symlink.FollowSymlinkInScope(filepath.Join(container.Root, cleanPath), container.Root)
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2014-05-11 20:49:46 +00:00
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}
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2015-11-02 23:25:26 +00:00
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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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2014-08-05 00:05:56 +00:00
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container.monitor.ExitOnNext()
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2015-01-19 12:44:04 +00:00
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}
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2015-07-30 21:01:53 +00:00
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// Resize changes the TTY of the process running inside the container
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// to the given height and width. The container must be running.
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2015-09-29 17:51:40 +00:00
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func (container *Container) Resize(h, w int) error {
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2015-11-12 19:55:17 +00:00
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if err := container.Command.ProcessConfig.Terminal.Resize(h, w); err != nil {
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2015-05-24 18:19:39 +00:00
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return err
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}
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return nil
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2013-05-24 02:33:28 +00:00
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}
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2015-11-12 19:55:17 +00:00
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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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2013-03-21 07:25:00 +00:00
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}
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2015-11-12 19:55:17 +00:00
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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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2013-03-21 07:25:00 +00:00
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}
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2013-06-04 18:00:22 +00:00
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func validateID(id string) error {
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2013-03-21 07:25:00 +00:00
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if id == "" {
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2015-09-16 18:56:26 +00:00
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return derr.ErrorCodeEmptyID
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2013-03-21 07:25:00 +00:00
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}
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return nil
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}
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2013-05-13 13:10:26 +00:00
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2013-10-05 02:25:15 +00:00
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// Returns true if the container exposes a certain port
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2015-07-30 21:01:53 +00:00
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func (container *Container) exposes(p nat.Port) bool {
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2013-10-05 02:25:15 +00:00
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_, exists := container.Config.ExposedPorts[p]
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return exists
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}
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2013-11-29 15:40:44 +00:00
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2015-11-12 19:55:17 +00:00
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// GetLogConfig returns the log configuration for the container.
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func (container *Container) GetLogConfig(defaultConfig runconfig.LogConfig) runconfig.LogConfig {
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cfg := container.HostConfig.LogConfig
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2015-07-01 00:40:13 +00:00
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if cfg.Type != "" || len(cfg.Config) > 0 { // container has log driver configured
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if cfg.Type == "" {
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cfg.Type = jsonfilelog.Name
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}
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2015-04-09 04:23:30 +00:00
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return cfg
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2014-04-14 06:40:49 +00:00
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}
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2015-04-09 04:23:30 +00:00
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|
// Use daemon's default log config for containers
|
2015-11-03 18:45:12 +00:00
|
|
|
return defaultConfig
|
2015-04-09 04:23:30 +00:00
|
|
|
}
|
2014-05-28 02:15:42 +00:00
|
|
|
|
2015-11-03 18:45:12 +00:00
|
|
|
// StartLogger starts a new logger driver for the container.
|
|
|
|
func (container *Container) StartLogger(cfg runconfig.LogConfig) (logger.Logger, error) {
|
2015-04-09 04:23:30 +00:00
|
|
|
c, err := logger.GetLogDriver(cfg.Type)
|
|
|
|
if err != nil {
|
2015-09-16 18:56:26 +00:00
|
|
|
return nil, derr.ErrorCodeLoggingFactory.WithArgs(err)
|
2015-04-09 04:23:30 +00:00
|
|
|
}
|
|
|
|
ctx := logger.Context{
|
2015-05-29 21:00:46 +00:00
|
|
|
Config: cfg.Config,
|
|
|
|
ContainerID: container.ID,
|
|
|
|
ContainerName: container.Name,
|
|
|
|
ContainerEntrypoint: container.Path,
|
|
|
|
ContainerArgs: container.Args,
|
2015-11-18 22:20:54 +00:00
|
|
|
ContainerImageID: container.ImageID.String(),
|
2015-05-29 21:00:46 +00:00
|
|
|
ContainerImageName: container.Config.Image,
|
|
|
|
ContainerCreated: container.Created,
|
2015-08-11 11:27:19 +00:00
|
|
|
ContainerEnv: container.Config.Env,
|
|
|
|
ContainerLabels: container.Config.Labels,
|
2015-04-09 04:23:30 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// Set logging file for "json-logger"
|
|
|
|
if cfg.Type == jsonfilelog.Name {
|
2015-11-12 19:55:17 +00:00
|
|
|
ctx.LogPath, err = container.GetRootResourcePath(fmt.Sprintf("%s-json.log", container.ID))
|
2015-04-20 18:26:39 +00:00
|
|
|
if err != nil {
|
2015-04-09 04:23:30 +00:00
|
|
|
return nil, err
|
2015-04-20 18:26:39 +00:00
|
|
|
}
|
2015-04-09 04:23:30 +00:00
|
|
|
}
|
|
|
|
return c(ctx)
|
|
|
|
}
|
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
// GetProcessLabel returns the process label for the container.
|
|
|
|
func (container *Container) GetProcessLabel() string {
|
2014-04-29 08:08:19 +00:00
|
|
|
// even if we have a process label return "" if we are running
|
|
|
|
// in privileged mode
|
2015-11-12 19:55:17 +00:00
|
|
|
if container.HostConfig.Privileged {
|
2014-04-29 08:08:19 +00:00
|
|
|
return ""
|
|
|
|
}
|
|
|
|
return container.ProcessLabel
|
|
|
|
}
|
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
// GetMountLabel returns the mounting label for the container.
|
|
|
|
// This label is empty if the container is privileged.
|
|
|
|
func (container *Container) GetMountLabel() string {
|
|
|
|
if container.HostConfig.Privileged {
|
2014-04-29 08:08:19 +00:00
|
|
|
return ""
|
|
|
|
}
|
|
|
|
return container.MountLabel
|
|
|
|
}
|
2014-05-02 23:59:28 +00:00
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
// GetExecIDs returns the list of exec commands running on the container.
|
|
|
|
func (container *Container) GetExecIDs() []string {
|
|
|
|
return container.ExecCommands.List()
|
2015-05-04 12:39:51 +00:00
|
|
|
}
|
|
|
|
|
2015-07-30 21:01:53 +00:00
|
|
|
// Attach connects to the container's TTY, delegating to standard
|
|
|
|
// streams or websockets depending on the configuration.
|
|
|
|
func (container *Container) Attach(stdin io.ReadCloser, stdout io.Writer, stderr io.Writer) chan error {
|
2015-11-12 19:55:17 +00:00
|
|
|
return AttachStreams(container.StreamConfig, container.Config.OpenStdin, container.Config.StdinOnce, container.Config.Tty, stdin, stdout, stderr)
|
2015-05-05 20:25:05 +00:00
|
|
|
}
|
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
// AttachStreams connects streams to a TTY.
|
|
|
|
// Used by exec too. Should this move somewhere else?
|
|
|
|
func AttachStreams(streamConfig *runconfig.StreamConfig, openStdin, stdinOnce, tty bool, stdin io.ReadCloser, stdout io.Writer, stderr io.Writer) chan error {
|
2015-05-05 20:25:05 +00:00
|
|
|
var (
|
|
|
|
cStdout, cStderr io.ReadCloser
|
|
|
|
cStdin io.WriteCloser
|
|
|
|
wg sync.WaitGroup
|
|
|
|
errors = make(chan error, 3)
|
|
|
|
)
|
|
|
|
|
|
|
|
if stdin != nil && openStdin {
|
|
|
|
cStdin = streamConfig.StdinPipe()
|
|
|
|
wg.Add(1)
|
|
|
|
}
|
|
|
|
|
|
|
|
if stdout != nil {
|
|
|
|
cStdout = streamConfig.StdoutPipe()
|
|
|
|
wg.Add(1)
|
|
|
|
}
|
|
|
|
|
|
|
|
if stderr != nil {
|
|
|
|
cStderr = streamConfig.StderrPipe()
|
|
|
|
wg.Add(1)
|
|
|
|
}
|
|
|
|
|
|
|
|
// Connect stdin of container to the http conn.
|
|
|
|
go func() {
|
|
|
|
if stdin == nil || !openStdin {
|
|
|
|
return
|
|
|
|
}
|
|
|
|
logrus.Debugf("attach: stdin: begin")
|
|
|
|
defer func() {
|
|
|
|
if stdinOnce && !tty {
|
|
|
|
cStdin.Close()
|
|
|
|
} else {
|
|
|
|
// No matter what, when stdin is closed (io.Copy unblock), close stdout and stderr
|
|
|
|
if cStdout != nil {
|
|
|
|
cStdout.Close()
|
|
|
|
}
|
|
|
|
if cStderr != nil {
|
|
|
|
cStderr.Close()
|
|
|
|
}
|
|
|
|
}
|
|
|
|
wg.Done()
|
|
|
|
logrus.Debugf("attach: stdin: end")
|
|
|
|
}()
|
|
|
|
|
|
|
|
var err error
|
|
|
|
if tty {
|
|
|
|
_, err = copyEscapable(cStdin, stdin)
|
|
|
|
} else {
|
|
|
|
_, err = io.Copy(cStdin, stdin)
|
|
|
|
|
|
|
|
}
|
|
|
|
if err == io.ErrClosedPipe {
|
|
|
|
err = nil
|
|
|
|
}
|
|
|
|
if err != nil {
|
|
|
|
logrus.Errorf("attach: stdin: %s", err)
|
|
|
|
errors <- err
|
|
|
|
return
|
|
|
|
}
|
|
|
|
}()
|
|
|
|
|
|
|
|
attachStream := func(name string, stream io.Writer, streamPipe io.ReadCloser) {
|
|
|
|
if stream == nil {
|
|
|
|
return
|
|
|
|
}
|
|
|
|
defer func() {
|
|
|
|
// Make sure stdin gets closed
|
|
|
|
if stdin != nil {
|
|
|
|
stdin.Close()
|
|
|
|
}
|
|
|
|
streamPipe.Close()
|
|
|
|
wg.Done()
|
|
|
|
logrus.Debugf("attach: %s: end", name)
|
|
|
|
}()
|
|
|
|
|
|
|
|
logrus.Debugf("attach: %s: begin", name)
|
|
|
|
_, err := io.Copy(stream, streamPipe)
|
|
|
|
if err == io.ErrClosedPipe {
|
|
|
|
err = nil
|
|
|
|
}
|
|
|
|
if err != nil {
|
|
|
|
logrus.Errorf("attach: %s: %v", name, err)
|
|
|
|
errors <- err
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
go attachStream("stdout", stdout, cStdout)
|
|
|
|
go attachStream("stderr", stderr, cStderr)
|
|
|
|
|
|
|
|
return promise.Go(func() error {
|
|
|
|
wg.Wait()
|
|
|
|
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) (written int64, err error) {
|
|
|
|
buf := make([]byte, 32*1024)
|
|
|
|
for {
|
|
|
|
nr, er := src.Read(buf)
|
|
|
|
if nr > 0 {
|
|
|
|
// ---- Docker addition
|
|
|
|
// char 16 is C-p
|
|
|
|
if nr == 1 && buf[0] == 16 {
|
|
|
|
nr, er = src.Read(buf)
|
|
|
|
// char 17 is C-q
|
|
|
|
if nr == 1 && buf[0] == 17 {
|
|
|
|
if err := src.Close(); err != nil {
|
|
|
|
return 0, err
|
|
|
|
}
|
|
|
|
return 0, nil
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// ---- End of docker
|
|
|
|
nw, ew := dst.Write(buf[0:nr])
|
|
|
|
if nw > 0 {
|
|
|
|
written += int64(nw)
|
|
|
|
}
|
|
|
|
if ew != nil {
|
|
|
|
err = ew
|
|
|
|
break
|
|
|
|
}
|
|
|
|
if nr != nw {
|
|
|
|
err = io.ErrShortWrite
|
|
|
|
break
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if er == io.EOF {
|
|
|
|
break
|
|
|
|
}
|
|
|
|
if er != nil {
|
|
|
|
err = er
|
|
|
|
break
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return written, err
|
|
|
|
}
|
2015-05-19 20:05:25 +00:00
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
// 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 {
|
|
|
|
return container.HostConfig.RestartPolicy.Name == "always" ||
|
|
|
|
(container.HostConfig.RestartPolicy.Name == "unless-stopped" && !container.HasBeenManuallyStopped) ||
|
|
|
|
(container.HostConfig.RestartPolicy.Name == "on-failure" && container.ExitCode != 0)
|
2015-05-19 20:05:25 +00:00
|
|
|
}
|
2015-05-22 17:37:00 +00:00
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
// AddBindMountPoint adds a new bind mount point configuration to the container.
|
|
|
|
func (container *Container) AddBindMountPoint(name, source, destination string, rw bool) {
|
2015-09-10 02:23:06 +00:00
|
|
|
container.MountPoints[destination] = &volume.MountPoint{
|
|
|
|
Name: name,
|
|
|
|
Source: source,
|
|
|
|
Destination: destination,
|
|
|
|
RW: rw,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
// AddLocalMountPoint adds a new local mount point configuration to the container.
|
|
|
|
func (container *Container) AddLocalMountPoint(name, destination string, rw bool) {
|
2015-09-10 02:23:06 +00:00
|
|
|
container.MountPoints[destination] = &volume.MountPoint{
|
|
|
|
Name: name,
|
|
|
|
Driver: volume.DefaultDriverName,
|
|
|
|
Destination: destination,
|
|
|
|
RW: rw,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
// AddMountPointWithVolume adds a new mount point configured with a volume to the container.
|
|
|
|
func (container *Container) AddMountPointWithVolume(destination string, vol volume.Volume, rw bool) {
|
2015-09-10 02:23:06 +00:00
|
|
|
container.MountPoints[destination] = &volume.MountPoint{
|
|
|
|
Name: vol.Name(),
|
|
|
|
Driver: vol.DriverName(),
|
|
|
|
Destination: destination,
|
|
|
|
RW: rw,
|
|
|
|
Volume: vol,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
// IsDestinationMounted checkes whether a path is mounted on the container or not.
|
|
|
|
func (container *Container) IsDestinationMounted(destination string) bool {
|
2015-09-10 02:23:06 +00:00
|
|
|
return container.MountPoints[destination] != nil
|
2015-05-22 17:37:00 +00:00
|
|
|
}
|
2015-08-04 20:51:48 +00:00
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
// StopSignal returns the signal used to stop the container.
|
|
|
|
func (container *Container) StopSignal() int {
|
2015-08-04 20:51:48 +00:00
|
|
|
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)
|
|
|
|
}
|
2015-11-30 22:44:34 +00:00
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
// InitDNSHostConfig ensures that the dns fields are never nil.
|
2015-11-30 22:44:34 +00:00
|
|
|
// 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.
|
2015-11-12 19:55:17 +00:00
|
|
|
func (container *Container) InitDNSHostConfig() {
|
|
|
|
if container.HostConfig.DNS == nil {
|
|
|
|
container.HostConfig.DNS = make([]string, 0)
|
2015-11-30 22:44:34 +00:00
|
|
|
}
|
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
if container.HostConfig.DNSSearch == nil {
|
|
|
|
container.HostConfig.DNSSearch = make([]string, 0)
|
2015-11-30 22:44:34 +00:00
|
|
|
}
|
|
|
|
|
2015-11-12 19:55:17 +00:00
|
|
|
if container.HostConfig.DNSOptions == nil {
|
|
|
|
container.HostConfig.DNSOptions = make([]string, 0)
|
2015-11-30 22:44:34 +00:00
|
|
|
}
|
|
|
|
}
|