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"` 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.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 }