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moby--moby/daemon/inspect.go
David Calavera 6bb0d1816a Move Container to its own package.
So other packages don't need to import the daemon package when they
want to use this struct.

Signed-off-by: David Calavera <david.calavera@gmail.com>
Signed-off-by: Tibor Vass <tibor@docker.com>
2015-12-03 17:39:49 +01:00

240 lines
7.8 KiB
Go

package daemon
import (
"fmt"
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/versions/v1p20"
"github.com/docker/docker/container"
"github.com/docker/docker/daemon/exec"
"github.com/docker/docker/daemon/network"
"github.com/docker/docker/layer"
"github.com/docker/docker/pkg/version"
)
// ContainerInspect returns low-level information about a
// container. Returns an error if the container cannot be found, or if
// there is an error getting the data.
func (daemon *Daemon) ContainerInspect(name string, size bool, version version.Version) (interface{}, error) {
switch {
case version.LessThan("1.20"):
return daemon.containerInspectPre120(name)
case version.Equal("1.20"):
return daemon.containerInspect120(name)
}
return daemon.containerInspectCurrent(name, size)
}
func (daemon *Daemon) containerInspectCurrent(name string, size bool) (*types.ContainerJSON, error) {
container, err := daemon.Get(name)
if err != nil {
return nil, err
}
container.Lock()
defer container.Unlock()
base, err := daemon.getInspectData(container, size)
if err != nil {
return nil, err
}
mountPoints := addMountPoints(container)
networkSettings := &types.NetworkSettings{
NetworkSettingsBase: types.NetworkSettingsBase{
Bridge: container.NetworkSettings.Bridge,
SandboxID: container.NetworkSettings.SandboxID,
HairpinMode: container.NetworkSettings.HairpinMode,
LinkLocalIPv6Address: container.NetworkSettings.LinkLocalIPv6Address,
LinkLocalIPv6PrefixLen: container.NetworkSettings.LinkLocalIPv6PrefixLen,
Ports: container.NetworkSettings.Ports,
SandboxKey: container.NetworkSettings.SandboxKey,
SecondaryIPAddresses: container.NetworkSettings.SecondaryIPAddresses,
SecondaryIPv6Addresses: container.NetworkSettings.SecondaryIPv6Addresses,
},
DefaultNetworkSettings: daemon.getDefaultNetworkSettings(container.NetworkSettings.Networks),
Networks: container.NetworkSettings.Networks,
}
return &types.ContainerJSON{
ContainerJSONBase: base,
Mounts: mountPoints,
Config: container.Config,
NetworkSettings: networkSettings,
}, nil
}
// containerInspect120 serializes the master version of a container into a json type.
func (daemon *Daemon) containerInspect120(name string) (*v1p20.ContainerJSON, error) {
container, err := daemon.Get(name)
if err != nil {
return nil, err
}
container.Lock()
defer container.Unlock()
base, err := daemon.getInspectData(container, false)
if err != nil {
return nil, err
}
mountPoints := addMountPoints(container)
config := &v1p20.ContainerConfig{
Config: container.Config,
MacAddress: container.Config.MacAddress,
NetworkDisabled: container.Config.NetworkDisabled,
ExposedPorts: container.Config.ExposedPorts,
VolumeDriver: container.HostConfig.VolumeDriver,
}
networkSettings := daemon.getBackwardsCompatibleNetworkSettings(container.NetworkSettings)
return &v1p20.ContainerJSON{
ContainerJSONBase: base,
Mounts: mountPoints,
Config: config,
NetworkSettings: networkSettings,
}, nil
}
func (daemon *Daemon) getInspectData(container *container.Container, size bool) (*types.ContainerJSONBase, error) {
// make a copy to play with
hostConfig := *container.HostConfig
if children, err := daemon.children(container.Name); err == nil {
for linkAlias, child := range children {
hostConfig.Links = append(hostConfig.Links, fmt.Sprintf("%s:%s", child.Name, linkAlias))
}
}
// we need this trick to preserve empty log driver, so
// container will use daemon defaults even if daemon change them
if hostConfig.LogConfig.Type == "" {
hostConfig.LogConfig.Type = daemon.defaultLogConfig.Type
}
if len(hostConfig.LogConfig.Config) == 0 {
hostConfig.LogConfig.Config = daemon.defaultLogConfig.Config
}
containerState := &types.ContainerState{
Status: container.State.StateString(),
Running: container.State.Running,
Paused: container.State.Paused,
Restarting: container.State.Restarting,
OOMKilled: container.State.OOMKilled,
Dead: container.State.Dead,
Pid: container.State.Pid,
ExitCode: container.State.ExitCode,
Error: container.State.Error,
StartedAt: container.State.StartedAt.Format(time.RFC3339Nano),
FinishedAt: container.State.FinishedAt.Format(time.RFC3339Nano),
}
contJSONBase := &types.ContainerJSONBase{
ID: container.ID,
Created: container.Created.Format(time.RFC3339Nano),
Path: container.Path,
Args: container.Args,
State: containerState,
Image: container.ImageID.String(),
LogPath: container.LogPath,
Name: container.Name,
RestartCount: container.RestartCount,
Driver: container.Driver,
MountLabel: container.MountLabel,
ProcessLabel: container.ProcessLabel,
ExecIDs: container.GetExecIDs(),
HostConfig: &hostConfig,
}
var (
sizeRw int64
sizeRootFs int64
)
if size {
sizeRw, sizeRootFs = daemon.getSize(container)
contJSONBase.SizeRw = &sizeRw
contJSONBase.SizeRootFs = &sizeRootFs
}
// Now set any platform-specific fields
contJSONBase = setPlatformSpecificContainerFields(container, contJSONBase)
contJSONBase.GraphDriver.Name = container.Driver
image, err := daemon.imageStore.Get(container.ImageID)
if err != nil {
return nil, err
}
l, err := daemon.layerStore.Get(image.RootFS.ChainID())
if err != nil {
return nil, err
}
defer layer.ReleaseAndLog(daemon.layerStore, l)
graphDriverData, err := l.Metadata()
if err != nil {
return nil, err
}
contJSONBase.GraphDriver.Data = graphDriverData
return contJSONBase, nil
}
// ContainerExecInspect returns low-level information about the exec
// command. An error is returned if the exec cannot be found.
func (daemon *Daemon) ContainerExecInspect(id string) (*exec.Config, error) {
eConfig, err := daemon.getExecConfig(id)
if err != nil {
return nil, err
}
return eConfig, nil
}
// VolumeInspect looks up a volume by name. An error is returned if
// the volume cannot be found.
func (daemon *Daemon) VolumeInspect(name string) (*types.Volume, error) {
v, err := daemon.volumes.Get(name)
if err != nil {
return nil, err
}
return volumeToAPIType(v), nil
}
func (daemon *Daemon) getBackwardsCompatibleNetworkSettings(settings *network.Settings) *v1p20.NetworkSettings {
result := &v1p20.NetworkSettings{
NetworkSettingsBase: types.NetworkSettingsBase{
Bridge: settings.Bridge,
SandboxID: settings.SandboxID,
HairpinMode: settings.HairpinMode,
LinkLocalIPv6Address: settings.LinkLocalIPv6Address,
LinkLocalIPv6PrefixLen: settings.LinkLocalIPv6PrefixLen,
Ports: settings.Ports,
SandboxKey: settings.SandboxKey,
SecondaryIPAddresses: settings.SecondaryIPAddresses,
SecondaryIPv6Addresses: settings.SecondaryIPv6Addresses,
},
DefaultNetworkSettings: daemon.getDefaultNetworkSettings(settings.Networks),
}
return result
}
// getDefaultNetworkSettings creates the deprecated structure that holds the information
// about the bridge network for a container.
func (daemon *Daemon) getDefaultNetworkSettings(networks map[string]*network.EndpointSettings) types.DefaultNetworkSettings {
var settings types.DefaultNetworkSettings
if defaultNetwork, ok := networks["bridge"]; ok {
settings.EndpointID = defaultNetwork.EndpointID
settings.Gateway = defaultNetwork.Gateway
settings.GlobalIPv6Address = defaultNetwork.GlobalIPv6Address
settings.GlobalIPv6PrefixLen = defaultNetwork.GlobalIPv6PrefixLen
settings.IPAddress = defaultNetwork.IPAddress
settings.IPPrefixLen = defaultNetwork.IPPrefixLen
settings.IPv6Gateway = defaultNetwork.IPv6Gateway
settings.MacAddress = defaultNetwork.MacAddress
}
return settings
}