func (o *DockerbuildOptions) Run() error {
f, err := os.Open(o.DockerfilePath)
if err != nil {
return err
}
defer f.Close()
e := builder.NewClientExecutor(o.Client)
e.Out, e.ErrOut = o.Out, o.Err
e.AllowPull = o.AllowPull
e.Directory = o.Directory
e.Tag = o.Tag
e.AuthFn = o.Keyring.Lookup
e.LogFn = func(format string, args ...interface{}) {
if glog.V(2) {
glog.Infof("Builder: "+format, args...)
} else {
fmt.Fprintf(e.ErrOut, "--> %s\n", fmt.Sprintf(format, args...))
}
}
safe := interrupt.New(func(os.Signal) { os.Exit(1) }, func() {
glog.V(5).Infof("invoking cleanup")
if err := e.Cleanup(); err != nil {
fmt.Fprintf(o.Err, "error: Unable to clean up build: %v\n", err)
}
})
return safe.Run(func() error { return stripLeadingError(e.Build(f, o.Arguments)) })
}
// Debug creates and runs a debugging pod.
func (o *DebugOptions) Debug() error {
pod, originalCommand := o.transformPodForDebug(o.Annotations)
var commandString string
switch {
case len(originalCommand) > 0:
commandString = strings.Join(originalCommand, " ")
default:
commandString = "<image entrypoint>"
}
if o.Print != nil {
return o.Print(pod, o.Attach.Out)
}
glog.V(5).Infof("Creating pod: %#v", pod)
fmt.Fprintf(o.Attach.Err, "Debugging with pod/%s, original command: %s\n", pod.Name, commandString)
pod, err := o.createPod(pod)
if err != nil {
return err
}
// ensure the pod is cleaned up on shutdown
o.Attach.InterruptParent = interrupt.New(
func(os.Signal) { os.Exit(1) },
func() {
fmt.Fprintf(o.Attach.Err, "\nRemoving debug pod ...\n")
if err := o.Attach.Client.Pods(pod.Namespace).Delete(pod.Name, kapi.NewDeleteOptions(0)); err != nil {
fmt.Fprintf(o.Attach.Err, "error: unable to delete the debug pod %q: %v", pod.Name, err)
}
},
)
glog.V(5).Infof("Created attach arguments: %#v", o.Attach)
return o.Attach.InterruptParent.Run(func() error {
w, err := o.Attach.Client.Pods(pod.Namespace).Watch(SingleObject(pod.ObjectMeta))
if err != nil {
return err
}
fmt.Fprintf(o.Attach.Err, "Waiting for pod to start ...\n")
switch _, err := Until(o.Timeout, w, PodContainerRunning(o.Attach.ContainerName)); {
// switch to logging output
case err == ErrPodCompleted, !o.Attach.Stdin:
_, err := kcmd.LogsOptions{
Object: pod,
Options: &kapi.PodLogOptions{
Container: o.Attach.ContainerName,
Follow: true,
},
Out: o.Attach.Out,
LogsForObject: o.LogsForObject,
}.RunLogs()
return err
case err != nil:
return err
default:
// TODO: attach can race with pod completion, allow attach to switch to logs
return o.Attach.Run()
}
})
}
// Start starts the dockershim grpc server.
func (s *DockerServer) Start() error {
glog.V(2).Infof("Start dockershim grpc server")
// Unlink to cleanup the previous socket file.
err := syscall.Unlink(s.addr)
if err != nil && !os.IsNotExist(err) {
return fmt.Errorf("failed to unlink socket file %q: %v", s.addr, err)
}
l, err := net.Listen(unixProtocol, s.addr)
if err != nil {
return fmt.Errorf("failed to listen on %q: %v", s.addr, err)
}
// Create the grpc server and register runtime and image services.
s.server = grpc.NewServer()
runtimeApi.RegisterRuntimeServiceServer(s.server, s.service)
runtimeApi.RegisterImageServiceServer(s.server, s.service)
go func() {
// Use interrupt handler to make sure the server to be stopped properly.
h := interrupt.New(nil, s.Stop)
err := h.Run(func() error { return s.server.Serve(l) })
if err != nil {
glog.Errorf("Failed to serve connections: %v", err)
}
}()
return nil
}
// waitForPod watches the given pod until the exitCondition is true. Each two seconds
// the tick function is called e.g. for progress output.
func waitForPod(podClient coreclient.PodsGetter, ns, name string, exitCondition watch.ConditionFunc, tick func(*api.Pod)) (*api.Pod, error) {
w, err := podClient.Pods(ns).Watch(api.SingleObject(api.ObjectMeta{Name: name}))
if err != nil {
return nil, err
}
pods := make(chan *api.Pod) // observed pods passed to the exitCondition
defer close(pods)
// wait for the first event, then start the 2 sec ticker and loop
go func() {
pod := <-pods
if pod == nil {
return
}
tick(pod)
t := time.NewTicker(2 * time.Second)
defer t.Stop()
for {
select {
case pod = <-pods:
if pod == nil {
return
}
case _, ok := <-t.C:
if !ok {
return
}
tick(pod)
}
}
}()
intr := interrupt.New(nil, w.Stop)
var result *api.Pod
err = intr.Run(func() error {
ev, err := watch.Until(0, w, func(ev watch.Event) (bool, error) {
c, err := exitCondition(ev)
if c == false && err == nil {
pods <- ev.Object.(*api.Pod) // send to ticker
}
return c, err
})
result = ev.Object.(*api.Pod)
return err
})
return result, err
}
// dockerRun mimics the 'docker run --rm' CLI command. It uses the Docker Remote
// API to create and start a container and stream its logs. The container is
// removed after it terminates.
func dockerRun(client DockerClient, createOpts docker.CreateContainerOptions, logsOpts docker.LogsOptions) error {
// Create a new container.
glog.V(4).Infof("Creating container with options {Name:%q Config:%+v HostConfig:%+v} ...", createOpts.Name, createOpts.Config, createOpts.HostConfig)
c, err := client.CreateContainer(createOpts)
if err != nil {
return fmt.Errorf("create container %q: %v", createOpts.Name, err)
}
containerName := containerNameOrID(c)
removeContainer := func() {
glog.V(4).Infof("Removing container %q ...", containerName)
if err := client.RemoveContainer(docker.RemoveContainerOptions{ID: c.ID}); err != nil {
glog.V(0).Infof("warning: Failed to remove container %q: %v", containerName, err)
} else {
glog.V(4).Infof("Removed container %q", containerName)
}
}
startWaitContainer := func() error {
// Start the container.
glog.V(4).Infof("Starting container %q ...", containerName)
if err := client.StartContainer(c.ID, nil); err != nil {
return fmt.Errorf("start container %q: %v", containerName, err)
}
// Stream container logs.
logsOpts.Container = c.ID
glog.V(4).Infof("Streaming logs of container %q with options %+v ...", containerName, logsOpts)
if err := client.Logs(logsOpts); err != nil {
return fmt.Errorf("streaming logs of %q: %v", containerName, err)
}
// Return an error if the exit code of the container is non-zero.
glog.V(4).Infof("Waiting for container %q to stop ...", containerName)
exitCode, err := client.WaitContainer(c.ID)
if err != nil {
return fmt.Errorf("waiting for container %q to stop: %v", containerName, err)
}
if exitCode != 0 {
return fmt.Errorf("container %q returned non-zero exit code: %d", containerName, exitCode)
}
return nil
}
// the interrupt handler acts as a super-defer which will guarantee removeContainer is executed
// either when startWaitContainer finishes, or when a SIGQUIT/SIGINT/SIGTERM is received.
return interrupt.New(nil, removeContainer).Run(startWaitContainer)
}
// waitForPod watches the given pod until the exitCondition is true
func waitForPod(podClient coreclient.PodsGetter, ns, name string, exitCondition watch.ConditionFunc) (*api.Pod, error) {
w, err := podClient.Pods(ns).Watch(api.SingleObject(api.ObjectMeta{Name: name}))
if err != nil {
return nil, err
}
intr := interrupt.New(nil, w.Stop)
var result *api.Pod
err = intr.Run(func() error {
ev, err := watch.Until(0, w, func(ev watch.Event) (bool, error) {
return exitCondition(ev)
})
result = ev.Object.(*api.Pod)
return err
})
return result, err
}
func (o *DockerbuildOptions) Run() error {
f, err := os.Open(o.DockerfilePath)
if err != nil {
return err
}
defer f.Close()
e := dockerbuilder.NewClientExecutor(o.Client)
e.Out, e.ErrOut = o.Out, o.Err
e.AllowPull = o.AllowPull
e.Directory = o.Directory
e.TransientMounts = o.Mounts
e.Tag = o.Tag
e.AuthFn = func(image string) ([]dockertypes.AuthConfig, bool) {
auth, ok := o.Keyring.Lookup(image)
if !ok {
return nil, false
}
var engineAuth []dockertypes.AuthConfig
for _, c := range auth {
engineAuth = append(engineAuth, c.AuthConfig)
}
return engineAuth, true
}
e.LogFn = func(format string, args ...interface{}) {
if glog.V(2) {
glog.Infof("Builder: "+format, args...)
} else {
fmt.Fprintf(e.ErrOut, "--> %s\n", fmt.Sprintf(format, args...))
}
}
safe := interrupt.New(func(os.Signal) { os.Exit(1) }, func() {
glog.V(5).Infof("invoking cleanup")
if err := e.Cleanup(); err != nil {
fmt.Fprintf(o.Err, "error: Unable to clean up build: %v\n", err)
}
})
return safe.Run(func() error { return stripLeadingError(e.Build(f, o.Arguments)) })
}
// Debug creates and runs a debugging pod.
func (o *DebugOptions) Debug() error {
pod, originalCommand := o.transformPodForDebug(o.Annotations)
var commandString string
switch {
case len(originalCommand) > 0:
commandString = strings.Join(originalCommand, " ")
default:
commandString = "<image entrypoint>"
}
if o.Print != nil {
return o.Print(pod, o.Attach.Out)
}
glog.V(5).Infof("Creating pod: %#v", pod)
fmt.Fprintf(o.Attach.Err, "Debugging with pod/%s, original command: %s\n", pod.Name, commandString)
pod, err := o.createPod(pod)
if err != nil {
return err
}
// ensure the pod is cleaned up on shutdown
o.Attach.InterruptParent = interrupt.New(
func(os.Signal) { os.Exit(1) },
func() {
fmt.Fprintf(o.Attach.Err, "\nRemoving debug pod ...\n")
if err := o.Attach.Client.Pods(pod.Namespace).Delete(pod.Name, kapi.NewDeleteOptions(0)); err != nil {
if !kapierrors.IsNotFound(err) {
fmt.Fprintf(o.Attach.Err, "error: unable to delete the debug pod %q: %v\n", pod.Name, err)
}
}
},
)
glog.V(5).Infof("Created attach arguments: %#v", o.Attach)
return o.Attach.InterruptParent.Run(func() error {
w, err := o.Attach.Client.Pods(pod.Namespace).Watch(SingleObject(pod.ObjectMeta))
if err != nil {
return err
}
fmt.Fprintf(o.Attach.Err, "Waiting for pod to start ...\n")
switch containerRunningEvent, err := Until(o.Timeout, w, PodContainerRunning(o.Attach.ContainerName)); {
// api didn't error right away but the pod wasn't even created
case kapierrors.IsNotFound(err):
msg := fmt.Sprintf("unable to create the debug pod %q", pod.Name)
if len(o.NodeName) > 0 {
msg += fmt.Sprintf(" on node %q", o.NodeName)
}
return fmt.Errorf(msg)
// switch to logging output
case err == ErrPodCompleted, !o.Attach.Stdin:
_, err := kcmd.LogsOptions{
Object: pod,
Options: &kapi.PodLogOptions{
Container: o.Attach.ContainerName,
Follow: true,
},
Out: o.Attach.Out,
LogsForObject: o.LogsForObject,
}.RunLogs()
return err
case err != nil:
return err
default:
// TODO this doesn't do us much good for remote debugging sessions, but until we get a local port
// set up to proxy, this is what we've got.
if podWithStatus, ok := containerRunningEvent.Object.(*kapi.Pod); ok {
fmt.Fprintf(o.Attach.Err, "Pod IP: %s\n", podWithStatus.Status.PodIP)
}
// TODO: attach can race with pod completion, allow attach to switch to logs
return o.Attach.Run()
}
})
}
func RunStatus(f cmdutil.Factory, cmd *cobra.Command, out io.Writer, args []string, options *resource.FilenameOptions) error {
if len(args) == 0 && cmdutil.IsFilenameEmpty(options.Filenames) {
return cmdutil.UsageError(cmd, "Required resource not specified.")
}
mapper, typer := f.Object()
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, options).
ResourceTypeOrNameArgs(true, args...).
SingleResourceType().
Latest().
Do()
err = r.Err()
if err != nil {
return err
}
infos, err := r.Infos()
if err != nil {
return err
}
if len(infos) != 1 {
return fmt.Errorf("rollout status is only supported on individual resources and resource collections - %d resources were found", len(infos))
}
info := infos[0]
mapping := info.ResourceMapping()
obj, err := r.Object()
if err != nil {
return err
}
rv, err := mapping.MetadataAccessor.ResourceVersion(obj)
if err != nil {
return err
}
statusViewer, err := f.StatusViewer(mapping)
if err != nil {
return err
}
revision := cmdutil.GetFlagInt64(cmd, "revision")
if revision < 0 {
return fmt.Errorf("revision must be a positive integer: %v", revision)
}
// check if deployment's has finished the rollout
status, done, err := statusViewer.Status(cmdNamespace, info.Name, revision)
if err != nil {
return err
}
fmt.Fprintf(out, "%s", status)
if done {
return nil
}
shouldWatch := cmdutil.GetFlagBool(cmd, "watch")
if !shouldWatch {
return nil
}
// watch for changes to the deployment
w, err := r.Watch(rv)
if err != nil {
return err
}
// if the rollout isn't done yet, keep watching deployment status
intr := interrupt.New(nil, w.Stop)
return intr.Run(func() error {
_, err := watch.Until(0, w, func(e watch.Event) (bool, error) {
// print deployment's status
status, done, err := statusViewer.Status(cmdNamespace, info.Name, revision)
if err != nil {
return false, err
}
fmt.Fprintf(out, "%s", status)
// Quit waiting if the rollout is done
if done {
return true, nil
}
return false, nil
})
return err
})
}
// RunGet implements the generic Get command
// TODO: convert all direct flag accessors to a struct and pass that instead of cmd
func RunGet(f cmdutil.Factory, out, errOut io.Writer, cmd *cobra.Command, args []string, options *GetOptions) error {
if len(options.Raw) > 0 {
restClient, err := f.RESTClient()
if err != nil {
return err
}
stream, err := restClient.Get().RequestURI(options.Raw).Stream()
if err != nil {
return err
}
defer stream.Close()
_, err = io.Copy(out, stream)
if err != nil && err != io.EOF {
return err
}
return nil
}
selector := cmdutil.GetFlagString(cmd, "selector")
allNamespaces := cmdutil.GetFlagBool(cmd, "all-namespaces")
showKind := cmdutil.GetFlagBool(cmd, "show-kind")
mapper, typer, err := f.UnstructuredObject()
if err != nil {
return err
}
filterFuncs := f.DefaultResourceFilterFunc()
filterOpts := f.DefaultResourceFilterOptions(cmd, allNamespaces)
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
if allNamespaces {
enforceNamespace = false
}
if len(args) == 0 && cmdutil.IsFilenameEmpty(options.Filenames) {
fmt.Fprint(errOut, "You must specify the type of resource to get. ", valid_resources)
fullCmdName := cmd.Parent().CommandPath()
usageString := "Required resource not specified."
if len(fullCmdName) > 0 && cmdutil.IsSiblingCommandExists(cmd, "explain") {
usageString = fmt.Sprintf("%s\nUse \"%s explain <resource>\" for a detailed description of that resource (e.g. %[2]s explain pods).", usageString, fullCmdName)
}
return cmdutil.UsageError(cmd, usageString)
}
// always show resources when getting by name or filename
argsHasNames, err := resource.HasNames(args)
if err != nil {
return err
}
if len(options.Filenames) > 0 || argsHasNames {
cmd.Flag("show-all").Value.Set("true")
}
export := cmdutil.GetFlagBool(cmd, "export")
// handle watch separately since we cannot watch multiple resource types
isWatch, isWatchOnly := cmdutil.GetFlagBool(cmd, "watch"), cmdutil.GetFlagBool(cmd, "watch-only")
if isWatch || isWatchOnly {
r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.UnstructuredClientForMapping), runtime.UnstructuredJSONScheme).
NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
FilenameParam(enforceNamespace, &options.FilenameOptions).
SelectorParam(selector).
ExportParam(export).
ResourceTypeOrNameArgs(true, args...).
SingleResourceType().
Latest().
Do()
err := r.Err()
if err != nil {
return err
}
infos, err := r.Infos()
if err != nil {
return err
}
if len(infos) != 1 {
return fmt.Errorf("watch is only supported on individual resources and resource collections - %d resources were found", len(infos))
}
info := infos[0]
mapping := info.ResourceMapping()
printer, err := f.PrinterForMapping(cmd, mapping, allNamespaces)
if err != nil {
return err
}
obj, err := r.Object()
if err != nil {
return err
}
// watching from resourceVersion 0, starts the watch at ~now and
// will return an initial watch event. Starting form ~now, rather
// the rv of the object will insure that we start the watch from
// inside the watch window, which the rv of the object might not be.
rv := "0"
isList := meta.IsListType(obj)
if isList {
// the resourceVersion of list objects is ~now but won't return
// an initial watch event
rv, err = mapping.MetadataAccessor.ResourceVersion(obj)
if err != nil {
return err
}
}
// print the current object
filteredResourceCount := 0
if !isWatchOnly {
if err := printer.PrintObj(obj, out); err != nil {
return fmt.Errorf("unable to output the provided object: %v", err)
}
filteredResourceCount++
cmdutil.PrintFilterCount(filteredResourceCount, mapping.Resource, filterOpts)
}
// print watched changes
w, err := r.Watch(rv)
if err != nil {
return err
}
first := true
filteredResourceCount = 0
intr := interrupt.New(nil, w.Stop)
intr.Run(func() error {
_, err := watch.Until(0, w, func(e watch.Event) (bool, error) {
if !isList && first {
// drop the initial watch event in the single resource case
first = false
return false, nil
}
err := printer.PrintObj(e.Object, out)
if err != nil {
return false, err
}
filteredResourceCount++
cmdutil.PrintFilterCount(filteredResourceCount, mapping.Resource, filterOpts)
return false, nil
})
return err
})
return nil
}
r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.UnstructuredClientForMapping), runtime.UnstructuredJSONScheme).
NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
FilenameParam(enforceNamespace, &options.FilenameOptions).
SelectorParam(selector).
ExportParam(export).
ResourceTypeOrNameArgs(true, args...).
ContinueOnError().
Latest().
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
printer, generic, err := cmdutil.PrinterForCommand(cmd)
if err != nil {
return err
}
if generic {
// we flattened the data from the builder, so we have individual items, but now we'd like to either:
// 1. if there is more than one item, combine them all into a single list
// 2. if there is a single item and that item is a list, leave it as its specific list
// 3. if there is a single item and it is not a a list, leave it as a single item
var errs []error
singular := false
infos, err := r.IntoSingular(&singular).Infos()
if err != nil {
if singular {
return err
}
errs = append(errs, err)
}
if len(infos) == 0 && len(errs) == 0 {
outputEmptyListWarning(errOut)
}
res := ""
if len(infos) > 0 {
res = infos[0].ResourceMapping().Resource
}
var obj runtime.Object
if singular {
obj = infos[0].Object
} else {
// we have more than one item, so coerce all items into a list
list := &runtime.UnstructuredList{
Object: map[string]interface{}{
"kind": "List",
"apiVersion": "v1",
"metadata": map[string]interface{}{},
},
}
for _, info := range infos {
list.Items = append(list.Items, info.Object.(*runtime.Unstructured))
}
obj = list
}
isList := meta.IsListType(obj)
if isList {
filteredResourceCount, items, err := cmdutil.FilterResourceList(obj, filterFuncs, filterOpts)
if err != nil {
return err
}
// take the filtered items and create a new list for display
list := &runtime.UnstructuredList{
Object: map[string]interface{}{
"kind": "List",
"apiVersion": "v1",
"metadata": map[string]interface{}{},
},
}
if listMeta, err := meta.ListAccessor(obj); err == nil {
list.Object["selfLink"] = listMeta.GetSelfLink()
list.Object["resourceVersion"] = listMeta.GetResourceVersion()
}
for _, item := range items {
list.Items = append(list.Items, item.(*runtime.Unstructured))
}
if err := printer.PrintObj(list, out); err != nil {
errs = append(errs, err)
}
cmdutil.PrintFilterCount(filteredResourceCount, res, filterOpts)
return utilerrors.Reduce(utilerrors.Flatten(utilerrors.NewAggregate(errs)))
}
filteredResourceCount := 0
if isFiltered, err := filterFuncs.Filter(obj, filterOpts); !isFiltered {
if err != nil {
glog.V(2).Infof("Unable to filter resource: %v", err)
} else if err := printer.PrintObj(obj, out); err != nil {
errs = append(errs, err)
}
} else if isFiltered {
filteredResourceCount++
}
cmdutil.PrintFilterCount(filteredResourceCount, res, filterOpts)
return utilerrors.Reduce(utilerrors.Flatten(utilerrors.NewAggregate(errs)))
}
allErrs := []error{}
errs := sets.NewString()
infos, err := r.Infos()
if err != nil {
allErrs = append(allErrs, err)
}
if len(infos) == 0 && len(allErrs) == 0 {
outputEmptyListWarning(errOut)
}
objs := make([]runtime.Object, len(infos))
for ix := range infos {
objs[ix] = infos[ix].Object
}
sorting, err := cmd.Flags().GetString("sort-by")
if err != nil {
return err
}
var sorter *kubectl.RuntimeSort
if len(sorting) > 0 && len(objs) > 1 {
// TODO: questionable
if sorter, err = kubectl.SortObjects(f.Decoder(true), objs, sorting); err != nil {
return err
}
}
// use the default printer for each object
printer = nil
var lastMapping *meta.RESTMapping
w := kubectl.GetNewTabWriter(out)
filteredResourceCount := 0
if resource.MultipleTypesRequested(args) || cmdutil.MustPrintWithKinds(objs, infos, sorter) {
showKind = true
}
for ix := range objs {
var mapping *meta.RESTMapping
var original runtime.Object
if sorter != nil {
mapping = infos[sorter.OriginalPosition(ix)].Mapping
original = infos[sorter.OriginalPosition(ix)].Object
} else {
mapping = infos[ix].Mapping
original = infos[ix].Object
}
if printer == nil || lastMapping == nil || mapping == nil || mapping.Resource != lastMapping.Resource {
if printer != nil {
w.Flush()
cmdutil.PrintFilterCount(filteredResourceCount, lastMapping.Resource, filterOpts)
}
printer, err = f.PrinterForMapping(cmd, mapping, allNamespaces)
if err != nil {
if !errs.Has(err.Error()) {
errs.Insert(err.Error())
allErrs = append(allErrs, err)
}
continue
}
// add linebreak between resource groups (if there is more than one)
// skip linebreak above first resource group
noHeaders := cmdutil.GetFlagBool(cmd, "no-headers")
if lastMapping != nil && !noHeaders {
fmt.Fprintf(errOut, "%s\n", "")
}
lastMapping = mapping
}
// filter objects if filter has been defined for current object
if isFiltered, err := filterFuncs.Filter(original, filterOpts); isFiltered {
if err == nil {
filteredResourceCount++
continue
}
if !errs.Has(err.Error()) {
errs.Insert(err.Error())
allErrs = append(allErrs, err)
}
}
if resourcePrinter, found := printer.(*kubectl.HumanReadablePrinter); found {
resourceName := resourcePrinter.GetResourceKind()
if mapping != nil {
if resourceName == "" {
resourceName = mapping.Resource
}
if alias, ok := kubectl.ResourceShortFormFor(mapping.Resource); ok {
resourceName = alias
} else if resourceName == "" {
resourceName = "none"
}
} else {
resourceName = "none"
}
if showKind {
resourcePrinter.EnsurePrintWithKind(resourceName)
}
if err := printer.PrintObj(original, w); err != nil {
if !errs.Has(err.Error()) {
errs.Insert(err.Error())
allErrs = append(allErrs, err)
}
}
continue
}
if err := printer.PrintObj(original, w); err != nil {
if !errs.Has(err.Error()) {
errs.Insert(err.Error())
allErrs = append(allErrs, err)
}
continue
}
}
w.Flush()
if printer != nil && lastMapping != nil {
cmdutil.PrintFilterCount(filteredResourceCount, lastMapping.Resource, filterOpts)
}
return utilerrors.NewAggregate(allErrs)
}
// RunGet implements the generic Get command
// TODO: convert all direct flag accessors to a struct and pass that instead of cmd
func RunGet(f *cmdutil.Factory, out io.Writer, errOut io.Writer, cmd *cobra.Command, args []string, options *GetOptions) error {
if len(options.Raw) > 0 {
restClient, err := f.RESTClient()
if err != nil {
return err
}
stream, err := restClient.Get().RequestURI(options.Raw).Stream()
if err != nil {
return err
}
defer stream.Close()
for {
buffer := make([]byte, 1024, 1024)
bytesRead, err := stream.Read(buffer)
if bytesRead > 0 {
fmt.Printf("%s", string(buffer[:bytesRead]))
}
if err == io.EOF {
return nil
}
if err != nil {
return err
}
}
}
selector := cmdutil.GetFlagString(cmd, "selector")
allNamespaces := cmdutil.GetFlagBool(cmd, "all-namespaces")
showKind := cmdutil.GetFlagBool(cmd, "show-kind")
mapper, typer := f.Object()
printAll := false
filterFuncs := f.DefaultResourceFilterFunc()
filterOpts := f.DefaultResourceFilterOptions(cmd, allNamespaces)
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
if allNamespaces {
enforceNamespace = false
}
if len(args) == 0 && cmdutil.IsFilenameEmpty(options.Filenames) {
fmt.Fprint(errOut, "You must specify the type of resource to get. ", valid_resources)
fullCmdName := cmd.Parent().CommandPath()
usageString := "Required resource not specified."
if len(fullCmdName) > 0 && cmdutil.IsSiblingCommandExists(cmd, "explain") {
usageString = fmt.Sprintf("%s\nUse \"%s explain <resource>\" for a detailed description of that resource (e.g. %[2]s explain pods).", usageString, fullCmdName)
}
return cmdutil.UsageError(cmd, usageString)
}
// determine if args contains "all"
for _, a := range args {
if a == "all" {
printAll = true
break
}
}
// always show resources when getting by name or filename
argsHasNames, err := resource.HasNames(args)
if err != nil {
return err
}
if len(options.Filenames) > 0 || argsHasNames {
cmd.Flag("show-all").Value.Set("true")
}
export := cmdutil.GetFlagBool(cmd, "export")
// handle watch separately since we cannot watch multiple resource types
isWatch, isWatchOnly := cmdutil.GetFlagBool(cmd, "watch"), cmdutil.GetFlagBool(cmd, "watch-only")
if isWatch || isWatchOnly {
r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
FilenameParam(enforceNamespace, &options.FilenameOptions).
SelectorParam(selector).
ExportParam(export).
ResourceTypeOrNameArgs(true, args...).
SingleResourceType().
Latest().
Do()
err := r.Err()
if err != nil {
return err
}
infos, err := r.Infos()
if err != nil {
return err
}
if len(infos) != 1 {
return fmt.Errorf("watch is only supported on individual resources and resource collections - %d resources were found", len(infos))
}
info := infos[0]
mapping := info.ResourceMapping()
printer, err := f.PrinterForMapping(cmd, mapping, allNamespaces)
if err != nil {
return err
}
obj, err := r.Object()
if err != nil {
return err
}
// watching from resourceVersion 0, starts the watch at ~now and
// will return an initial watch event. Starting form ~now, rather
// the rv of the object will insure that we start the watch from
// inside the watch window, which the rv of the object might not be.
rv := "0"
isList := meta.IsListType(obj)
if isList {
// the resourceVersion of list objects is ~now but won't return
// an initial watch event
rv, err = mapping.MetadataAccessor.ResourceVersion(obj)
if err != nil {
return err
}
}
// print the current object
filteredResourceCount := 0
if !isWatchOnly {
if err := printer.PrintObj(obj, out); err != nil {
return fmt.Errorf("unable to output the provided object: %v", err)
}
filteredResourceCount++
cmdutil.PrintFilterCount(filteredResourceCount, mapping.Resource, errOut, filterOpts)
}
// print watched changes
w, err := r.Watch(rv)
if err != nil {
return err
}
first := true
filteredResourceCount = 0
intr := interrupt.New(nil, w.Stop)
intr.Run(func() error {
_, err := watch.Until(0, w, func(e watch.Event) (bool, error) {
if !isList && first {
// drop the initial watch event in the single resource case
first = false
return false, nil
}
err := printer.PrintObj(e.Object, out)
if err != nil {
return false, err
}
filteredResourceCount++
cmdutil.PrintFilterCount(filteredResourceCount, mapping.Resource, errOut, filterOpts)
return false, nil
})
return err
})
return nil
}
r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
FilenameParam(enforceNamespace, &options.FilenameOptions).
SelectorParam(selector).
ExportParam(export).
ResourceTypeOrNameArgs(true, args...).
ContinueOnError().
Latest().
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
printer, generic, err := cmdutil.PrinterForCommand(cmd)
if err != nil {
return err
}
if generic {
clientConfig, err := f.ClientConfig()
if err != nil {
return err
}
// the outermost object will be converted to the output-version, but inner
// objects can use their mappings
version, err := cmdutil.OutputVersion(cmd, clientConfig.GroupVersion)
if err != nil {
return err
}
var errs []error
singular := false
infos, err := r.IntoSingular(&singular).Infos()
if err != nil {
if singular {
return err
}
errs = append(errs, err)
}
res := ""
if len(infos) > 0 {
res = infos[0].ResourceMapping().Resource
}
obj, err := resource.AsVersionedObject(infos, !singular, version, f.JSONEncoder())
if err != nil {
return err
}
isList := meta.IsListType(obj)
if isList {
filteredResourceCount, items, err := cmdutil.FilterResourceList(obj, filterFuncs, filterOpts)
if err != nil {
return err
}
filteredObj, err := cmdutil.ObjectListToVersionedObject(items, version)
if err != nil {
return err
}
if err := printer.PrintObj(filteredObj, out); err != nil {
errs = append(errs, err)
}
cmdutil.PrintFilterCount(filteredResourceCount, res, errOut, filterOpts)
return utilerrors.Reduce(utilerrors.Flatten(utilerrors.NewAggregate(errs)))
}
filteredResourceCount := 0
if isFiltered, err := filterFuncs.Filter(obj, filterOpts); !isFiltered {
if err != nil {
glog.V(2).Infof("Unable to filter resource: %v", err)
} else if err := printer.PrintObj(obj, out); err != nil {
errs = append(errs, err)
}
} else if isFiltered {
filteredResourceCount++
}
cmdutil.PrintFilterCount(filteredResourceCount, res, errOut, filterOpts)
return utilerrors.Reduce(utilerrors.Flatten(utilerrors.NewAggregate(errs)))
}
allErrs := []error{}
infos, err := r.Infos()
if err != nil {
allErrs = append(allErrs, err)
}
objs := make([]runtime.Object, len(infos))
for ix := range infos {
objs[ix] = infos[ix].Object
}
sorting, err := cmd.Flags().GetString("sort-by")
if err != nil {
return err
}
var sorter *kubectl.RuntimeSort
if len(sorting) > 0 && len(objs) > 1 {
clientConfig, err := f.ClientConfig()
if err != nil {
return err
}
version, err := cmdutil.OutputVersion(cmd, clientConfig.GroupVersion)
if err != nil {
return err
}
for ix := range infos {
objs[ix], err = infos[ix].Mapping.ConvertToVersion(infos[ix].Object, version)
if err != nil {
allErrs = append(allErrs, err)
continue
}
}
// TODO: questionable
if sorter, err = kubectl.SortObjects(f.Decoder(true), objs, sorting); err != nil {
return err
}
}
// use the default printer for each object
printer = nil
var lastMapping *meta.RESTMapping
w := kubectl.GetNewTabWriter(out)
filteredResourceCount := 0
if cmdutil.MustPrintWithKinds(objs, infos, sorter, printAll) {
showKind = true
}
for ix := range objs {
var mapping *meta.RESTMapping
var original runtime.Object
if sorter != nil {
mapping = infos[sorter.OriginalPosition(ix)].Mapping
original = infos[sorter.OriginalPosition(ix)].Object
} else {
mapping = infos[ix].Mapping
original = infos[ix].Object
}
if printer == nil || lastMapping == nil || mapping == nil || mapping.Resource != lastMapping.Resource {
if printer != nil {
w.Flush()
cmdutil.PrintFilterCount(filteredResourceCount, lastMapping.Resource, errOut, filterOpts)
}
printer, err = f.PrinterForMapping(cmd, mapping, allNamespaces)
if err != nil {
allErrs = append(allErrs, err)
continue
}
// add linebreak between resource groups (if there is more than one)
// skip linebreak above first resource group
noHeaders := cmdutil.GetFlagBool(cmd, "no-headers")
if lastMapping != nil && !noHeaders {
fmt.Fprintf(errOut, "%s\n", "")
}
lastMapping = mapping
}
// filter objects if filter has been defined for current object
if isFiltered, err := filterFuncs.Filter(original, filterOpts); isFiltered {
if err == nil {
filteredResourceCount++
continue
}
allErrs = append(allErrs, err)
}
if resourcePrinter, found := printer.(*kubectl.HumanReadablePrinter); found {
resourceName := resourcePrinter.GetResourceKind()
if mapping != nil {
if resourceName == "" {
resourceName = mapping.Resource
}
if alias, ok := kubectl.ResourceShortFormFor(mapping.Resource); ok {
resourceName = alias
} else if resourceName == "" {
resourceName = "none"
}
} else {
resourceName = "none"
}
if showKind {
resourcePrinter.EnsurePrintWithKind(resourceName)
}
if err := printer.PrintObj(original, w); err != nil {
allErrs = append(allErrs, err)
}
continue
}
if err := printer.PrintObj(original, w); err != nil {
allErrs = append(allErrs, err)
continue
}
}
w.Flush()
if printer != nil && lastMapping != nil {
cmdutil.PrintFilterCount(filteredResourceCount, lastMapping.Resource, errOut, filterOpts)
}
return utilerrors.NewAggregate(allErrs)
}
