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package libpod
import (
"strings"
"time"
"github.com/containers/libpod/libpod/driver"
"github.com/cri-o/ocicni/pkg/ocicni"
specs "github.com/opencontainers/runtime-spec/specs-go"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
// InspectContainerData provides a detailed record of a container's configuration
// and state as viewed by Libpod.
// Large portions of this structure are defined such that the output is
// compatible with `docker inspect` JSON, but additional fields have been added
// as required to share information not in the original output.
type InspectContainerData struct {
ID string `json:"Id"`
Created time.Time `json:"Created"`
Path string `json:"Path"`
Args []string `json:"Args"`
State *InspectContainerState `json:"State"`
ImageID string `json:"Image"`
ImageName string `json:"ImageName"`
Rootfs string `json:"Rootfs"`
ResolvConfPath string `json:"ResolvConfPath"`
HostnamePath string `json:"HostnamePath"`
HostsPath string `json:"HostsPath"`
StaticDir string `json:"StaticDir"`
OCIConfigPath string `json:"OCIConfigPath,omitempty"`
LogPath string `json:"LogPath"`
ConmonPidFile string `json:"ConmonPidFile"`
Name string `json:"Name"`
RestartCount int32 `json:"RestartCount"`
Driver string `json:"Driver"`
MountLabel string `json:"MountLabel"`
ProcessLabel string `json:"ProcessLabel"`
AppArmorProfile string `json:"AppArmorProfile"`
EffectiveCaps []string `json:"EffectiveCaps"`
BoundingCaps []string `json:"BoundingCaps"`
ExecIDs []string `json:"ExecIDs"`
GraphDriver *driver.Data `json:"GraphDriver"`
SizeRw int64 `json:"SizeRw,omitempty"`
SizeRootFs int64 `json:"SizeRootFs,omitempty"`
Mounts []specs.Mount `json:"Mounts"`
Dependencies []string `json:"Dependencies"`
NetworkSettings *InspectNetworkSettings `json:"NetworkSettings"` //TODO
ExitCommand []string `json:"ExitCommand"`
Namespace string `json:"Namespace"`
IsInfra bool `json:"IsInfra"`
}
// InspectContainerState provides a detailed record of a container's current
// state. It is returned as part of InspectContainerData.
// As with InspectContainerData, many portions of this struct are matched to
// Docker, but here we see more fields that are unused (nonsensical in the
// context of Libpod).
type InspectContainerState struct {
OciVersion string `json:"OciVersion"`
Status string `json:"Status"`
Running bool `json:"Running"`
Paused bool `json:"Paused"`
Restarting bool `json:"Restarting"` // TODO
OOMKilled bool `json:"OOMKilled"`
Dead bool `json:"Dead"`
Pid int `json:"Pid"`
ExitCode int32 `json:"ExitCode"`
Error string `json:"Error"` // TODO
StartedAt time.Time `json:"StartedAt"`
FinishedAt time.Time `json:"FinishedAt"`
Healthcheck HealthCheckResults `json:"Healthcheck,omitempty"`
}
// InspectNetworkSettings holds information about the network settings of the
// container.
// Many fields are maintained only for compatibility with `docker inspect` and
// are unused within Libpod.
type InspectNetworkSettings struct {
Bridge string `json:"Bridge"`
SandboxID string `json:"SandboxID"`
HairpinMode bool `json:"HairpinMode"`
LinkLocalIPv6Address string `json:"LinkLocalIPv6Address"`
LinkLocalIPv6PrefixLen int `json:"LinkLocalIPv6PrefixLen"`
Ports []ocicni.PortMapping `json:"Ports"`
SandboxKey string `json:"SandboxKey"`
SecondaryIPAddresses []string `json:"SecondaryIPAddresses"`
SecondaryIPv6Addresses []string `json:"SecondaryIPv6Addresses"`
EndpointID string `json:"EndpointID"`
Gateway string `json:"Gateway"`
GlobalIPv6Address string `json:"GlobalIPv6Address"`
GlobalIPv6PrefixLen int `json:"GlobalIPv6PrefixLen"`
IPAddress string `json:"IPAddress"`
IPPrefixLen int `json:"IPPrefixLen"`
IPv6Gateway string `json:"IPv6Gateway"`
MacAddress string `json:"MacAddress"`
}
// Inspect a container for low-level information
func (c *Container) Inspect(size bool) (*InspectContainerData, error) {
if !c.batched {
c.lock.Lock()
defer c.lock.Unlock()
if err := c.syncContainer(); err != nil {
return nil, err
}
}
storeCtr, err := c.runtime.store.Container(c.ID())
if err != nil {
return nil, errors.Wrapf(err, "error getting container from store %q", c.ID())
}
layer, err := c.runtime.store.Layer(storeCtr.LayerID)
if err != nil {
return nil, errors.Wrapf(err, "error reading information about layer %q", storeCtr.LayerID)
}
driverData, err := driver.GetDriverData(c.runtime.store, layer.ID)
if err != nil {
return nil, errors.Wrapf(err, "error getting graph driver info %q", c.ID())
}
return c.getContainerInspectData(size, driverData)
}
func (c *Container) getContainerInspectData(size bool, driverData *driver.Data) (*InspectContainerData, error) {
config := c.config
runtimeInfo := c.state
spec, err := c.specFromState()
if err != nil {
return nil, err
}
// Process is allowed to be nil in the spec
args := []string{}
if config.Spec.Process != nil {
args = config.Spec.Process.Args
}
var path string
if len(args) > 0 {
path = args[0]
}
if len(args) > 1 {
args = args[1:]
}
execIDs := []string{}
for id := range c.state.ExecSessions {
execIDs = append(execIDs, id)
}
if c.state.BindMounts == nil {
c.state.BindMounts = make(map[string]string)
}
resolvPath := ""
if getPath, ok := c.state.BindMounts["/etc/resolv.conf"]; ok {
resolvPath = getPath
}
hostsPath := ""
if getPath, ok := c.state.BindMounts["/etc/hosts"]; ok {
hostsPath = getPath
}
hostnamePath := ""
if getPath, ok := c.state.BindMounts["/etc/hostname"]; ok {
hostnamePath = getPath
}
var mounts []specs.Mount
for i, mnt := range spec.Mounts {
mounts = append(mounts, mnt)
// We only want to show the name of the named volume in the inspect
// output, so split the path and get the name out of it.
if strings.Contains(mnt.Source, c.runtime.config.VolumePath) {
split := strings.Split(mnt.Source[len(c.runtime.config.VolumePath)+1:], "/")
mounts[i].Source = split[0]
}
}
data := &InspectContainerData{
ID: config.ID,
Created: config.CreatedTime,
Path: path,
Args: args,
State: &InspectContainerState{
OciVersion: spec.Version,
Status: runtimeInfo.State.String(),
Running: runtimeInfo.State == ContainerStateRunning,
Paused: runtimeInfo.State == ContainerStatePaused,
OOMKilled: runtimeInfo.OOMKilled,
Dead: runtimeInfo.State.String() == "bad state",
Pid: runtimeInfo.PID,
ExitCode: runtimeInfo.ExitCode,
Error: "", // can't get yet
StartedAt: runtimeInfo.StartedTime,
FinishedAt: runtimeInfo.FinishedTime,
},
ImageID: config.RootfsImageID,
ImageName: config.RootfsImageName,
ExitCommand: config.ExitCommand,
Namespace: config.Namespace,
Rootfs: config.Rootfs,
ResolvConfPath: resolvPath,
HostnamePath: hostnamePath,
HostsPath: hostsPath,
StaticDir: config.StaticDir,
LogPath: config.LogPath,
ConmonPidFile: config.ConmonPidFile,
Name: config.Name,
RestartCount: int32(runtimeInfo.RestartCount),
Driver: driverData.Name,
MountLabel: config.MountLabel,
ProcessLabel: config.ProcessLabel,
EffectiveCaps: spec.Process.Capabilities.Effective,
BoundingCaps: spec.Process.Capabilities.Bounding,
AppArmorProfile: spec.Process.ApparmorProfile,
ExecIDs: execIDs,
GraphDriver: driverData,
Mounts: mounts,
Dependencies: c.Dependencies(),
NetworkSettings: &InspectNetworkSettings{
Bridge: "", // TODO
SandboxID: "", // TODO - is this even relevant?
HairpinMode: false, // TODO
LinkLocalIPv6Address: "", // TODO - do we even support IPv6?
LinkLocalIPv6PrefixLen: 0, // TODO - do we even support IPv6?
Ports: []ocicni.PortMapping{}, // TODO - maybe worth it to put this in Docker format?
SandboxKey: "", // Network namespace path
SecondaryIPAddresses: nil, // TODO - do we support this?
SecondaryIPv6Addresses: nil, // TODO - do we support this?
EndpointID: "", // TODO - is this even relevant?
Gateway: "", // TODO
GlobalIPv6Address: "",
GlobalIPv6PrefixLen: 0,
IPAddress: "",
IPPrefixLen: 0,
IPv6Gateway: "",
MacAddress: "", // TODO
},
IsInfra: c.IsInfra(),
}
if c.state.ConfigPath != "" {
data.OCIConfigPath = c.state.ConfigPath
}
if c.config.HealthCheckConfig != nil {
// This container has a healthcheck defined in it; we need to add it's state
healthCheckState, err := c.GetHealthCheckLog()
if err != nil {
// An error here is not considered fatal; no health state will be displayed
logrus.Error(err)
} else {
data.State.Healthcheck = healthCheckState
}
}
// Copy port mappings into network settings
if config.PortMappings != nil {
data.NetworkSettings.Ports = config.PortMappings
}
// Get information on the container's network namespace (if present)
data = c.getContainerNetworkInfo(data)
if size {
rootFsSize, err := c.rootFsSize()
if err != nil {
logrus.Errorf("error getting rootfs size %q: %v", config.ID, err)
}
rwSize, err := c.rwSize()
if err != nil {
logrus.Errorf("error getting rw size %q: %v", config.ID, err)
}
data.SizeRootFs = rootFsSize
data.SizeRw = rwSize
}
return data, nil
}
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