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|
package abi
import (
"bytes"
"context"
"errors"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"strconv"
"strings"
buildahDefine "github.com/containers/buildah/define"
"github.com/containers/common/libimage"
nettypes "github.com/containers/common/libnetwork/types"
"github.com/containers/common/pkg/config"
"github.com/containers/image/v5/types"
"github.com/containers/podman/v4/libpod"
"github.com/containers/podman/v4/libpod/define"
"github.com/containers/podman/v4/pkg/autoupdate"
"github.com/containers/podman/v4/pkg/domain/entities"
v1apps "github.com/containers/podman/v4/pkg/k8s.io/api/apps/v1"
v1 "github.com/containers/podman/v4/pkg/k8s.io/api/core/v1"
"github.com/containers/podman/v4/pkg/specgen"
"github.com/containers/podman/v4/pkg/specgen/generate"
"github.com/containers/podman/v4/pkg/specgen/generate/kube"
"github.com/containers/podman/v4/pkg/specgenutil"
"github.com/containers/podman/v4/pkg/util"
"github.com/ghodss/yaml"
"github.com/opencontainers/go-digest"
"github.com/sirupsen/logrus"
yamlv3 "gopkg.in/yaml.v3"
)
// createServiceContainer creates a container that can later on
// be associated with the pods of a K8s yaml. It will be started along with
// the first pod.
func (ic *ContainerEngine) createServiceContainer(ctx context.Context, name string, options entities.PlayKubeOptions) (*libpod.Container, error) {
// Make sure to replace the service container as well if requested by
// the user.
if options.Replace {
if _, err := ic.ContainerRm(ctx, []string{name}, entities.RmOptions{Force: true, Ignore: true}); err != nil {
return nil, fmt.Errorf("replacing service container: %w", err)
}
}
// Similar to infra containers, a service container is using the pause image.
image, err := generate.PullOrBuildInfraImage(ic.Libpod, "")
if err != nil {
return nil, fmt.Errorf("image for service container: %w", err)
}
ctrOpts := entities.ContainerCreateOptions{
// Inherited from infra containers
ImageVolume: "bind",
IsInfra: false,
MemorySwappiness: -1,
// No need to spin up slirp etc.
Net: &entities.NetOptions{Network: specgen.Namespace{NSMode: specgen.NoNetwork}},
}
// Create and fill out the runtime spec.
s := specgen.NewSpecGenerator(image, false)
if err := specgenutil.FillOutSpecGen(s, &ctrOpts, []string{}); err != nil {
return nil, fmt.Errorf("completing spec for service container: %w", err)
}
s.Name = name
runtimeSpec, spec, opts, err := generate.MakeContainer(ctx, ic.Libpod, s, false, nil)
if err != nil {
return nil, fmt.Errorf("creating runtime spec for service container: %w", err)
}
opts = append(opts, libpod.WithIsService())
opts = append(opts, libpod.WithSdNotifyMode(define.SdNotifyModeConmon))
// Create a new libpod container based on the spec.
ctr, err := ic.Libpod.NewContainer(ctx, runtimeSpec, spec, false, opts...)
if err != nil {
return nil, fmt.Errorf("creating service container: %w", err)
}
return ctr, nil
}
// Creates the name for a service container based on the provided content of a
// K8s yaml file.
func serviceContainerName(content []byte) string {
// The name of the service container is the first 12
// characters of the yaml file's hash followed by the
// '-service' suffix to guarantee a predictable and
// discoverable name.
hash := digest.FromBytes(content).Encoded()
return hash[0:12] + "-service"
}
func (ic *ContainerEngine) PlayKube(ctx context.Context, body io.Reader, options entities.PlayKubeOptions) (_ *entities.PlayKubeReport, finalErr error) {
report := &entities.PlayKubeReport{}
validKinds := 0
// read yaml document
content, err := ioutil.ReadAll(body)
if err != nil {
return nil, err
}
// split yaml document
documentList, err := splitMultiDocYAML(content)
if err != nil {
return nil, err
}
// sort kube kinds
documentList, err = sortKubeKinds(documentList)
if err != nil {
return nil, fmt.Errorf("unable to sort kube kinds: %w", err)
}
ipIndex := 0
var configMaps []v1.ConfigMap
// create pod on each document if it is a pod or deployment
// any other kube kind will be skipped
for _, document := range documentList {
kind, err := getKubeKind(document)
if err != nil {
return nil, fmt.Errorf("unable to read kube YAML: %w", err)
}
// TODO: create constants for the various "kinds" of yaml files.
var serviceContainer *libpod.Container
if options.ServiceContainer && (kind == "Pod" || kind == "Deployment") {
ctr, err := ic.createServiceContainer(ctx, serviceContainerName(content), options)
if err != nil {
return nil, err
}
serviceContainer = ctr
// Make sure to remove the container in case something goes wrong below.
defer func() {
if finalErr == nil {
return
}
if err := ic.Libpod.RemoveContainer(ctx, ctr, true, false, nil); err != nil {
logrus.Errorf("Cleaning up service container after failure: %v", err)
}
}()
}
switch kind {
case "Pod":
var podYAML v1.Pod
var podTemplateSpec v1.PodTemplateSpec
if err := yaml.Unmarshal(document, &podYAML); err != nil {
return nil, fmt.Errorf("unable to read YAML as Kube Pod: %w", err)
}
podTemplateSpec.ObjectMeta = podYAML.ObjectMeta
podTemplateSpec.Spec = podYAML.Spec
for name, val := range podYAML.Annotations {
if len(val) > define.MaxKubeAnnotation {
return nil, fmt.Errorf("invalid annotation %q=%q value length exceeds Kubernetetes max %d", name, val, define.MaxKubeAnnotation)
}
}
for name, val := range options.Annotations {
if podYAML.Annotations == nil {
podYAML.Annotations = make(map[string]string)
}
podYAML.Annotations[name] = val
}
r, err := ic.playKubePod(ctx, podTemplateSpec.ObjectMeta.Name, &podTemplateSpec, options, &ipIndex, podYAML.Annotations, configMaps, serviceContainer)
if err != nil {
return nil, err
}
report.Pods = append(report.Pods, r.Pods...)
validKinds++
case "Deployment":
var deploymentYAML v1apps.Deployment
if err := yaml.Unmarshal(document, &deploymentYAML); err != nil {
return nil, fmt.Errorf("unable to read YAML as Kube Deployment: %w", err)
}
r, err := ic.playKubeDeployment(ctx, &deploymentYAML, options, &ipIndex, configMaps, serviceContainer)
if err != nil {
return nil, err
}
report.Pods = append(report.Pods, r.Pods...)
validKinds++
case "PersistentVolumeClaim":
var pvcYAML v1.PersistentVolumeClaim
if err := yaml.Unmarshal(document, &pvcYAML); err != nil {
return nil, fmt.Errorf("unable to read YAML as Kube PersistentVolumeClaim: %w", err)
}
r, err := ic.playKubePVC(ctx, &pvcYAML)
if err != nil {
return nil, err
}
report.Volumes = append(report.Volumes, r.Volumes...)
validKinds++
case "ConfigMap":
var configMap v1.ConfigMap
if err := yaml.Unmarshal(document, &configMap); err != nil {
return nil, fmt.Errorf("unable to read YAML as Kube ConfigMap: %w", err)
}
configMaps = append(configMaps, configMap)
default:
logrus.Infof("Kube kind %s not supported", kind)
continue
}
}
if validKinds == 0 {
if len(configMaps) > 0 {
return nil, fmt.Errorf("ConfigMaps in podman are not a standalone object and must be used in a container")
}
return nil, fmt.Errorf("YAML document does not contain any supported kube kind")
}
return report, nil
}
func (ic *ContainerEngine) playKubeDeployment(ctx context.Context, deploymentYAML *v1apps.Deployment, options entities.PlayKubeOptions, ipIndex *int, configMaps []v1.ConfigMap, serviceContainer *libpod.Container) (*entities.PlayKubeReport, error) {
var (
deploymentName string
podSpec v1.PodTemplateSpec
numReplicas int32
i int32
report entities.PlayKubeReport
)
deploymentName = deploymentYAML.ObjectMeta.Name
if deploymentName == "" {
return nil, errors.New("deployment does not have a name")
}
numReplicas = 1
if deploymentYAML.Spec.Replicas != nil {
numReplicas = *deploymentYAML.Spec.Replicas
}
podSpec = deploymentYAML.Spec.Template
// create "replicas" number of pods
for i = 0; i < numReplicas; i++ {
podName := fmt.Sprintf("%s-pod-%d", deploymentName, i)
podReport, err := ic.playKubePod(ctx, podName, &podSpec, options, ipIndex, deploymentYAML.Annotations, configMaps, serviceContainer)
if err != nil {
return nil, fmt.Errorf("error encountered while bringing up pod %s: %w", podName, err)
}
report.Pods = append(report.Pods, podReport.Pods...)
}
return &report, nil
}
func (ic *ContainerEngine) playKubePod(ctx context.Context, podName string, podYAML *v1.PodTemplateSpec, options entities.PlayKubeOptions, ipIndex *int, annotations map[string]string, configMaps []v1.ConfigMap, serviceContainer *libpod.Container) (*entities.PlayKubeReport, error) {
var (
writer io.Writer
playKubePod entities.PlayKubePod
report entities.PlayKubeReport
)
// Create the secret manager before hand
secretsManager, err := ic.Libpod.SecretsManager()
if err != nil {
return nil, err
}
// Assert the pod has a name
if podName == "" {
return nil, fmt.Errorf("pod does not have a name")
}
podOpt := entities.PodCreateOptions{
Infra: true,
Net: &entities.NetOptions{NoHosts: options.NoHosts},
ExitPolicy: string(config.PodExitPolicyStop),
}
podOpt, err = kube.ToPodOpt(ctx, podName, podOpt, podYAML)
if err != nil {
return nil, err
}
if len(options.Networks) > 0 {
ns, networks, netOpts, err := specgen.ParseNetworkFlag(options.Networks)
if err != nil {
return nil, err
}
if (ns.IsBridge() && len(networks) == 0) || ns.IsHost() {
return nil, fmt.Errorf("invalid value passed to --network: bridge or host networking must be configured in YAML")
}
podOpt.Net.Network = ns
podOpt.Net.Networks = networks
podOpt.Net.NetworkOptions = netOpts
}
if options.Userns == "" {
options.Userns = "host"
}
// Validate the userns modes supported.
podOpt.Userns, err = specgen.ParseUserNamespace(options.Userns)
if err != nil {
return nil, err
}
// FIXME This is very hard to support properly with a good ux
if len(options.StaticIPs) > *ipIndex {
if !podOpt.Net.Network.IsBridge() {
return nil, fmt.Errorf("static ip addresses can only be set when the network mode is bridge: %w", define.ErrInvalidArg)
}
if len(podOpt.Net.Networks) != 1 {
return nil, fmt.Errorf("cannot set static ip addresses for more than network, use netname:ip=<ip> syntax to specify ips for more than network: %w", define.ErrInvalidArg)
}
for name, netOpts := range podOpt.Net.Networks {
netOpts.StaticIPs = append(netOpts.StaticIPs, options.StaticIPs[*ipIndex])
podOpt.Net.Networks[name] = netOpts
}
} else if len(options.StaticIPs) > 0 {
// only warn if the user has set at least one ip
logrus.Warn("No more static ips left using a random one")
}
if len(options.StaticMACs) > *ipIndex {
if !podOpt.Net.Network.IsBridge() {
return nil, fmt.Errorf("static mac address can only be set when the network mode is bridge: %w", define.ErrInvalidArg)
}
if len(podOpt.Net.Networks) != 1 {
return nil, fmt.Errorf("cannot set static mac address for more than network, use netname:mac=<mac> syntax to specify mac for more than network: %w", define.ErrInvalidArg)
}
for name, netOpts := range podOpt.Net.Networks {
netOpts.StaticMAC = nettypes.HardwareAddr(options.StaticMACs[*ipIndex])
podOpt.Net.Networks[name] = netOpts
}
} else if len(options.StaticIPs) > 0 {
// only warn if the user has set at least one mac
logrus.Warn("No more static macs left using a random one")
}
*ipIndex++
p := specgen.NewPodSpecGenerator()
if err != nil {
return nil, err
}
p, err = entities.ToPodSpecGen(*p, &podOpt)
if err != nil {
return nil, err
}
podSpec := entities.PodSpec{PodSpecGen: *p}
configMapIndex := make(map[string]struct{})
for _, configMap := range configMaps {
configMapIndex[configMap.Name] = struct{}{}
}
for _, p := range options.ConfigMaps {
f, err := os.Open(p)
if err != nil {
return nil, err
}
defer f.Close()
cm, err := readConfigMapFromFile(f)
if err != nil {
return nil, fmt.Errorf("%q: %w", p, err)
}
if _, present := configMapIndex[cm.Name]; present {
return nil, fmt.Errorf("ambiguous configuration: the same config map %s is present in YAML and in --configmaps %s file", cm.Name, p)
}
configMaps = append(configMaps, cm)
}
volumes, err := kube.InitializeVolumes(podYAML.Spec.Volumes, configMaps)
if err != nil {
return nil, err
}
// Go through the volumes and create a podman volume for all volumes that have been
// defined by a configmap
for _, v := range volumes {
if v.Type == kube.KubeVolumeTypeConfigMap && !v.Optional {
vol, err := ic.Libpod.NewVolume(ctx, libpod.WithVolumeName(v.Source))
if err != nil {
if errors.Is(err, define.ErrVolumeExists) {
// Volume for this configmap already exists do not
// error out instead reuse the current volume.
vol, err = ic.Libpod.GetVolume(v.Source)
if err != nil {
return nil, fmt.Errorf("cannot re-use local volume for volume from configmap %q: %w", v.Source, err)
}
} else {
return nil, fmt.Errorf("cannot create a local volume for volume from configmap %q: %w", v.Source, err)
}
}
mountPoint, err := vol.MountPoint()
if err != nil || mountPoint == "" {
return nil, fmt.Errorf("unable to get mountpoint of volume %q: %w", vol.Name(), err)
}
// Create files and add data to the volume mountpoint based on the Items in the volume
for k, v := range v.Items {
dataPath := filepath.Join(mountPoint, k)
f, err := os.Create(dataPath)
if err != nil {
return nil, fmt.Errorf("cannot create file %q at volume mountpoint %q: %w", k, mountPoint, err)
}
defer f.Close()
_, err = f.WriteString(v)
if err != nil {
return nil, err
}
}
}
}
seccompPaths, err := kube.InitializeSeccompPaths(podYAML.ObjectMeta.Annotations, options.SeccompProfileRoot)
if err != nil {
return nil, err
}
var ctrRestartPolicy string
switch podYAML.Spec.RestartPolicy {
case v1.RestartPolicyAlways:
ctrRestartPolicy = define.RestartPolicyAlways
case v1.RestartPolicyOnFailure:
ctrRestartPolicy = define.RestartPolicyOnFailure
case v1.RestartPolicyNever:
ctrRestartPolicy = define.RestartPolicyNo
default: // Default to Always
ctrRestartPolicy = define.RestartPolicyAlways
}
if podOpt.Infra {
infraImage := util.DefaultContainerConfig().Engine.InfraImage
infraOptions := entities.NewInfraContainerCreateOptions()
infraOptions.Hostname = podSpec.PodSpecGen.PodBasicConfig.Hostname
infraOptions.UserNS = options.Userns
podSpec.PodSpecGen.InfraImage = infraImage
podSpec.PodSpecGen.NoInfra = false
podSpec.PodSpecGen.InfraContainerSpec = specgen.NewSpecGenerator(infraImage, false)
podSpec.PodSpecGen.InfraContainerSpec.NetworkOptions = p.NetworkOptions
podSpec.PodSpecGen.InfraContainerSpec.SdNotifyMode = define.SdNotifyModeIgnore
err = specgenutil.FillOutSpecGen(podSpec.PodSpecGen.InfraContainerSpec, &infraOptions, []string{})
if err != nil {
return nil, err
}
}
if serviceContainer != nil {
podSpec.PodSpecGen.ServiceContainerID = serviceContainer.ID()
}
// Create the Pod
pod, err := generate.MakePod(&podSpec, ic.Libpod)
if err != nil {
return nil, err
}
podInfraID, err := pod.InfraContainerID()
if err != nil {
return nil, err
}
if !options.Quiet {
writer = os.Stderr
}
containers := make([]*libpod.Container, 0, len(podYAML.Spec.Containers))
initContainers := make([]*libpod.Container, 0, len(podYAML.Spec.InitContainers))
var cwd string
if options.ContextDir != "" {
cwd = options.ContextDir
} else {
cwd, err = os.Getwd()
if err != nil {
return nil, err
}
}
ctrNames := make(map[string]string)
for _, initCtr := range podYAML.Spec.InitContainers {
// Error out if same name is used for more than one container
if _, ok := ctrNames[initCtr.Name]; ok {
return nil, fmt.Errorf("the pod %q is invalid; duplicate container name %q detected", podName, initCtr.Name)
}
ctrNames[initCtr.Name] = ""
// Init containers cannot have either of lifecycle, livenessProbe, readinessProbe, or startupProbe set
if initCtr.Lifecycle != nil || initCtr.LivenessProbe != nil || initCtr.ReadinessProbe != nil || initCtr.StartupProbe != nil {
return nil, fmt.Errorf("cannot create an init container that has either of lifecycle, livenessProbe, readinessProbe, or startupProbe set")
}
pulledImage, labels, err := ic.getImageAndLabelInfo(ctx, cwd, annotations, writer, initCtr, options)
if err != nil {
return nil, err
}
for k, v := range podSpec.PodSpecGen.Labels { // add podYAML labels
labels[k] = v
}
initCtrType := annotations[define.InitContainerType]
if initCtrType == "" {
initCtrType = define.OneShotInitContainer
}
specgenOpts := kube.CtrSpecGenOptions{
Annotations: annotations,
ConfigMaps: configMaps,
Container: initCtr,
Image: pulledImage,
InitContainerType: initCtrType,
Labels: labels,
LogDriver: options.LogDriver,
LogOptions: options.LogOptions,
NetNSIsHost: p.NetNS.IsHost(),
PodID: pod.ID(),
PodInfraID: podInfraID,
PodName: podName,
PodSecurityContext: podYAML.Spec.SecurityContext,
RestartPolicy: ctrRestartPolicy,
SeccompPaths: seccompPaths,
SecretsManager: secretsManager,
UserNSIsHost: p.Userns.IsHost(),
Volumes: volumes,
}
specGen, err := kube.ToSpecGen(ctx, &specgenOpts)
if err != nil {
return nil, err
}
specGen.SdNotifyMode = define.SdNotifyModeIgnore
rtSpec, spec, opts, err := generate.MakeContainer(ctx, ic.Libpod, specGen, false, nil)
if err != nil {
return nil, err
}
opts = append(opts, libpod.WithSdNotifyMode(define.SdNotifyModeIgnore))
ctr, err := generate.ExecuteCreate(ctx, ic.Libpod, rtSpec, spec, false, opts...)
if err != nil {
return nil, err
}
initContainers = append(initContainers, ctr)
}
for _, container := range podYAML.Spec.Containers {
// Error out if the same name is used for more than one container
if _, ok := ctrNames[container.Name]; ok {
return nil, fmt.Errorf("the pod %q is invalid; duplicate container name %q detected", podName, container.Name)
}
ctrNames[container.Name] = ""
pulledImage, labels, err := ic.getImageAndLabelInfo(ctx, cwd, annotations, writer, container, options)
if err != nil {
return nil, err
}
for k, v := range podSpec.PodSpecGen.Labels { // add podYAML labels
labels[k] = v
}
specgenOpts := kube.CtrSpecGenOptions{
Annotations: annotations,
ConfigMaps: configMaps,
Container: container,
Image: pulledImage,
Labels: labels,
LogDriver: options.LogDriver,
LogOptions: options.LogOptions,
NetNSIsHost: p.NetNS.IsHost(),
PodID: pod.ID(),
PodInfraID: podInfraID,
PodName: podName,
PodSecurityContext: podYAML.Spec.SecurityContext,
RestartPolicy: ctrRestartPolicy,
SeccompPaths: seccompPaths,
SecretsManager: secretsManager,
UserNSIsHost: p.Userns.IsHost(),
Volumes: volumes,
}
specGen, err := kube.ToSpecGen(ctx, &specgenOpts)
if err != nil {
return nil, err
}
specGen.RawImageName = container.Image
rtSpec, spec, opts, err := generate.MakeContainer(ctx, ic.Libpod, specGen, false, nil)
if err != nil {
return nil, err
}
opts = append(opts, libpod.WithSdNotifyMode(define.SdNotifyModeIgnore))
ctr, err := generate.ExecuteCreate(ctx, ic.Libpod, rtSpec, spec, false, opts...)
if err != nil {
return nil, err
}
containers = append(containers, ctr)
}
if options.Start != types.OptionalBoolFalse {
// Start the containers
podStartErrors, err := pod.Start(ctx)
if err != nil && !errors.Is(err, define.ErrPodPartialFail) {
return nil, err
}
for id, err := range podStartErrors {
playKubePod.ContainerErrors = append(playKubePod.ContainerErrors, fmt.Errorf("error starting container %s: %w", id, err).Error())
fmt.Println(playKubePod.ContainerErrors)
}
}
playKubePod.ID = pod.ID()
for _, ctr := range containers {
playKubePod.Containers = append(playKubePod.Containers, ctr.ID())
}
for _, initCtr := range initContainers {
playKubePod.InitContainers = append(playKubePod.InitContainers, initCtr.ID())
}
report.Pods = append(report.Pods, playKubePod)
return &report, nil
}
// getImageAndLabelInfo returns the image information and how the image should be pulled plus as well as labels to be used for the container in the pod.
// Moved this to a separate function so that it can be used for both init and regular containers when playing a kube yaml.
func (ic *ContainerEngine) getImageAndLabelInfo(ctx context.Context, cwd string, annotations map[string]string, writer io.Writer, container v1.Container, options entities.PlayKubeOptions) (*libimage.Image, map[string]string, error) {
// Contains all labels obtained from kube
labels := make(map[string]string)
var pulledImage *libimage.Image
buildFile, err := getBuildFile(container.Image, cwd)
if err != nil {
return nil, nil, err
}
existsLocally, err := ic.Libpod.LibimageRuntime().Exists(container.Image)
if err != nil {
return nil, nil, err
}
if (len(buildFile) > 0) && ((!existsLocally && options.Build != types.OptionalBoolFalse) || (options.Build == types.OptionalBoolTrue)) {
buildOpts := new(buildahDefine.BuildOptions)
commonOpts := new(buildahDefine.CommonBuildOptions)
buildOpts.ConfigureNetwork = buildahDefine.NetworkDefault
buildOpts.Isolation = buildahDefine.IsolationChroot
buildOpts.CommonBuildOpts = commonOpts
buildOpts.Output = container.Image
buildOpts.ContextDirectory = filepath.Dir(buildFile)
if _, _, err := ic.Libpod.Build(ctx, *buildOpts, []string{buildFile}...); err != nil {
return nil, nil, err
}
i, _, err := ic.Libpod.LibimageRuntime().LookupImage(container.Image, new(libimage.LookupImageOptions))
if err != nil {
return nil, nil, err
}
pulledImage = i
} else {
// NOTE: set the pull policy to "newer". This will cover cases
// where the "latest" tag requires a pull and will also
// transparently handle "localhost/" prefixed files which *may*
// refer to a locally built image OR an image running a
// registry on localhost.
pullPolicy := config.PullPolicyNewer
if len(container.ImagePullPolicy) > 0 {
// Make sure to lower the strings since K8s pull policy
// may be capitalized (see bugzilla.redhat.com/show_bug.cgi?id=1985905).
rawPolicy := string(container.ImagePullPolicy)
pullPolicy, err = config.ParsePullPolicy(strings.ToLower(rawPolicy))
if err != nil {
return nil, nil, err
}
}
// This ensures the image is the image store
pullOptions := &libimage.PullOptions{}
pullOptions.AuthFilePath = options.Authfile
pullOptions.CertDirPath = options.CertDir
pullOptions.SignaturePolicyPath = options.SignaturePolicy
pullOptions.Writer = writer
pullOptions.Username = options.Username
pullOptions.Password = options.Password
pullOptions.InsecureSkipTLSVerify = options.SkipTLSVerify
pulledImages, err := ic.Libpod.LibimageRuntime().Pull(ctx, container.Image, pullPolicy, pullOptions)
if err != nil {
return nil, nil, err
}
pulledImage = pulledImages[0]
}
// Handle kube annotations
for k, v := range annotations {
switch k {
// Auto update annotation without container name will apply to
// all containers within the pod
case autoupdate.Label, autoupdate.AuthfileLabel:
labels[k] = v
// Auto update annotation with container name will apply only
// to the specified container
case fmt.Sprintf("%s/%s", autoupdate.Label, container.Name),
fmt.Sprintf("%s/%s", autoupdate.AuthfileLabel, container.Name):
prefixAndCtr := strings.Split(k, "/")
labels[prefixAndCtr[0]] = v
}
}
return pulledImage, labels, nil
}
// playKubePVC creates a podman volume from a kube persistent volume claim.
func (ic *ContainerEngine) playKubePVC(ctx context.Context, pvcYAML *v1.PersistentVolumeClaim) (*entities.PlayKubeReport, error) {
var report entities.PlayKubeReport
opts := make(map[string]string)
// Get pvc name.
// This is the only required pvc attribute to create a podman volume.
name := pvcYAML.Name
if strings.TrimSpace(name) == "" {
return nil, fmt.Errorf("persistent volume claim name can not be empty")
}
// Create podman volume options.
volOptions := []libpod.VolumeCreateOption{
libpod.WithVolumeName(name),
libpod.WithVolumeLabels(pvcYAML.Labels),
}
// Get pvc annotations and create remaining podman volume options if available.
// These are podman volume options that do not match any of the persistent volume claim
// attributes, so they can be configured using annotations since they will not affect k8s.
for k, v := range pvcYAML.Annotations {
switch k {
case util.VolumeDriverAnnotation:
volOptions = append(volOptions, libpod.WithVolumeDriver(v))
case util.VolumeDeviceAnnotation:
opts["device"] = v
case util.VolumeTypeAnnotation:
opts["type"] = v
case util.VolumeUIDAnnotation:
uid, err := strconv.Atoi(v)
if err != nil {
return nil, fmt.Errorf("cannot convert uid %s to integer: %w", v, err)
}
volOptions = append(volOptions, libpod.WithVolumeUID(uid))
opts["UID"] = v
case util.VolumeGIDAnnotation:
gid, err := strconv.Atoi(v)
if err != nil {
return nil, fmt.Errorf("cannot convert gid %s to integer: %w", v, err)
}
volOptions = append(volOptions, libpod.WithVolumeGID(gid))
opts["GID"] = v
case util.VolumeMountOptsAnnotation:
opts["o"] = v
}
}
volOptions = append(volOptions, libpod.WithVolumeOptions(opts))
// Create volume.
vol, err := ic.Libpod.NewVolume(ctx, volOptions...)
if err != nil {
return nil, err
}
report.Volumes = append(report.Volumes, entities.PlayKubeVolume{
Name: vol.Name(),
})
return &report, nil
}
// readConfigMapFromFile returns a kubernetes configMap obtained from --configmap flag
func readConfigMapFromFile(r io.Reader) (v1.ConfigMap, error) {
var cm v1.ConfigMap
content, err := ioutil.ReadAll(r)
if err != nil {
return cm, fmt.Errorf("unable to read ConfigMap YAML content: %w", err)
}
if err := yaml.Unmarshal(content, &cm); err != nil {
return cm, fmt.Errorf("unable to read YAML as Kube ConfigMap: %w", err)
}
if cm.Kind != "ConfigMap" {
return cm, fmt.Errorf("invalid YAML kind: %q. [ConfigMap] is the only supported by --configmap", cm.Kind)
}
return cm, nil
}
// splitMultiDocYAML reads multiple documents in a YAML file and
// returns them as a list.
func splitMultiDocYAML(yamlContent []byte) ([][]byte, error) {
var documentList [][]byte
d := yamlv3.NewDecoder(bytes.NewReader(yamlContent))
for {
var o interface{}
// read individual document
err := d.Decode(&o)
if err == io.EOF {
break
}
if err != nil {
return nil, fmt.Errorf("multi doc yaml could not be split: %w", err)
}
if o != nil {
// back to bytes
document, err := yamlv3.Marshal(o)
if err != nil {
return nil, fmt.Errorf("individual doc yaml could not be marshalled: %w", err)
}
documentList = append(documentList, document)
}
}
return documentList, nil
}
// getKubeKind unmarshals a kube YAML document and returns its kind.
func getKubeKind(obj []byte) (string, error) {
var kubeObject v1.ObjectReference
if err := yaml.Unmarshal(obj, &kubeObject); err != nil {
return "", err
}
return kubeObject.Kind, nil
}
// sortKubeKinds adds the correct creation order for the kube kinds.
// Any pod dependency will be created first like volumes, secrets, etc.
func sortKubeKinds(documentList [][]byte) ([][]byte, error) {
var sortedDocumentList [][]byte
for _, document := range documentList {
kind, err := getKubeKind(document)
if err != nil {
return nil, err
}
switch kind {
case "Pod", "Deployment":
sortedDocumentList = append(sortedDocumentList, document)
default:
sortedDocumentList = append([][]byte{document}, sortedDocumentList...)
}
}
return sortedDocumentList, nil
}
func imageNamePrefix(imageName string) string {
prefix := imageName
s := strings.Split(prefix, ":")
if len(s) > 0 {
prefix = s[0]
}
s = strings.Split(prefix, "/")
if len(s) > 0 {
prefix = s[len(s)-1]
}
s = strings.Split(prefix, "@")
if len(s) > 0 {
prefix = s[0]
}
return prefix
}
func getBuildFile(imageName string, cwd string) (string, error) {
buildDirName := imageNamePrefix(imageName)
containerfilePath := filepath.Join(cwd, buildDirName, "Containerfile")
dockerfilePath := filepath.Join(cwd, buildDirName, "Dockerfile")
_, err := os.Stat(containerfilePath)
if err == nil {
logrus.Debugf("Building %s with %s", imageName, containerfilePath)
return containerfilePath, nil
}
// If the error is not because the file does not exist, take
// a mulligan and try Dockerfile. If that also fails, return that
// error
if err != nil && !os.IsNotExist(err) {
logrus.Error(err.Error())
}
_, err = os.Stat(dockerfilePath)
if err == nil {
logrus.Debugf("Building %s with %s", imageName, dockerfilePath)
return dockerfilePath, nil
}
// Strike two
if os.IsNotExist(err) {
return "", nil
}
return "", err
}
func (ic *ContainerEngine) PlayKubeDown(ctx context.Context, body io.Reader, _ entities.PlayKubeDownOptions) (*entities.PlayKubeReport, error) {
var (
podNames []string
)
reports := new(entities.PlayKubeReport)
// read yaml document
content, err := ioutil.ReadAll(body)
if err != nil {
return nil, err
}
// split yaml document
documentList, err := splitMultiDocYAML(content)
if err != nil {
return nil, err
}
// sort kube kinds
documentList, err = sortKubeKinds(documentList)
if err != nil {
return nil, fmt.Errorf("unable to sort kube kinds: %w", err)
}
for _, document := range documentList {
kind, err := getKubeKind(document)
if err != nil {
return nil, fmt.Errorf("unable to read as kube YAML: %w", err)
}
switch kind {
case "Pod":
var podYAML v1.Pod
if err := yaml.Unmarshal(document, &podYAML); err != nil {
return nil, fmt.Errorf("unable to read YAML as Kube Pod: %w", err)
}
podNames = append(podNames, podYAML.ObjectMeta.Name)
case "Deployment":
var deploymentYAML v1apps.Deployment
if err := yaml.Unmarshal(document, &deploymentYAML); err != nil {
return nil, fmt.Errorf("unable to read YAML as Kube Deployment: %w", err)
}
var numReplicas int32 = 1
deploymentName := deploymentYAML.ObjectMeta.Name
if deploymentYAML.Spec.Replicas != nil {
numReplicas = *deploymentYAML.Spec.Replicas
}
for i := 0; i < int(numReplicas); i++ {
podName := fmt.Sprintf("%s-pod-%d", deploymentName, i)
podNames = append(podNames, podName)
}
default:
continue
}
}
// Add the reports
reports.StopReport, err = ic.PodStop(ctx, podNames, entities.PodStopOptions{})
if err != nil {
return nil, err
}
reports.RmReport, err = ic.PodRm(ctx, podNames, entities.PodRmOptions{})
if err != nil {
return nil, err
}
return reports, nil
}
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