/
helpers.go
356 lines (324 loc) · 9.65 KB
/
helpers.go
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package describe
import (
"bytes"
"fmt"
"regexp"
"strings"
"text/tabwriter"
"time"
"github.com/docker/docker/pkg/units"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/resource"
kclient "k8s.io/kubernetes/pkg/client/unversioned"
"k8s.io/kubernetes/pkg/labels"
"k8s.io/kubernetes/pkg/util/sets"
buildapi "github.com/openshift/origin/pkg/build/api"
"github.com/openshift/origin/pkg/client"
imageapi "github.com/openshift/origin/pkg/image/api"
imagequota "github.com/openshift/origin/pkg/quota/image"
)
const emptyString = "<none>"
func tabbedString(f func(*tabwriter.Writer) error) (string, error) {
out := new(tabwriter.Writer)
buf := &bytes.Buffer{}
out.Init(buf, 0, 8, 1, '\t', 0)
err := f(out)
if err != nil {
return "", err
}
out.Flush()
str := string(buf.String())
return str, nil
}
func toString(v interface{}) string {
value := fmt.Sprintf("%v", v)
if len(value) == 0 {
value = emptyString
}
return value
}
func bold(v interface{}) string {
return "\033[1m" + toString(v) + "\033[0m"
}
func convertEnv(env []api.EnvVar) map[string]string {
result := make(map[string]string, len(env))
for _, e := range env {
result[e.Name] = toString(e.Value)
}
return result
}
func formatEnv(env api.EnvVar) string {
if env.ValueFrom != nil && env.ValueFrom.FieldRef != nil {
return fmt.Sprintf("%s=<%s>", env.Name, env.ValueFrom.FieldRef.FieldPath)
}
return fmt.Sprintf("%s=%s", env.Name, env.Value)
}
func formatString(out *tabwriter.Writer, label string, v interface{}) {
fmt.Fprintf(out, fmt.Sprintf("%s:\t%s\n", label, toString(v)))
}
func formatTime(out *tabwriter.Writer, label string, t time.Time) {
fmt.Fprintf(out, fmt.Sprintf("%s:\t%s ago\n", label, formatRelativeTime(t)))
}
func formatLabels(labelMap map[string]string) string {
return labels.Set(labelMap).String()
}
func extractAnnotations(annotations map[string]string, keys ...string) ([]string, map[string]string) {
extracted := make([]string, len(keys))
remaining := make(map[string]string)
for k, v := range annotations {
remaining[k] = v
}
for i, key := range keys {
extracted[i] = remaining[key]
delete(remaining, key)
}
return extracted, remaining
}
func formatMapStringString(out *tabwriter.Writer, label string, items map[string]string) {
keys := sets.NewString()
for k := range items {
keys.Insert(k)
}
if keys.Len() == 0 {
formatString(out, label, "")
return
}
for i, key := range keys.List() {
if i == 0 {
formatString(out, label, fmt.Sprintf("%s=%s", key, items[key]))
} else {
fmt.Fprintf(out, "%s\t%s=%s\n", "", key, items[key])
}
}
}
func formatAnnotations(out *tabwriter.Writer, m api.ObjectMeta, prefix string) {
values, annotations := extractAnnotations(m.Annotations, "description")
if len(values[0]) > 0 {
formatString(out, prefix+"Description", values[0])
}
formatMapStringString(out, prefix+"Annotations", annotations)
}
var timeNowFn = func() time.Time {
return time.Now()
}
func formatRelativeTime(t time.Time) string {
return units.HumanDuration(timeNowFn().Sub(t))
}
// FormatRelativeTime converts a time field into a human readable age string (hours, minutes, days).
func FormatRelativeTime(t time.Time) string {
return formatRelativeTime(t)
}
func formatMeta(out *tabwriter.Writer, m api.ObjectMeta) {
formatString(out, "Name", m.Name)
if !m.CreationTimestamp.IsZero() {
formatTime(out, "Created", m.CreationTimestamp.Time)
}
formatString(out, "Labels", formatLabels(m.Labels))
formatAnnotations(out, m, "")
}
// webhookURL assembles map with of webhook type as key and webhook url and value
func webhookURL(c *buildapi.BuildConfig, cli client.BuildConfigsNamespacer) map[string]string {
result := map[string]string{}
for _, trigger := range c.Spec.Triggers {
whTrigger := ""
switch trigger.Type {
case buildapi.GitHubWebHookBuildTriggerType:
whTrigger = trigger.GitHubWebHook.Secret
case buildapi.GenericWebHookBuildTriggerType:
whTrigger = trigger.GenericWebHook.Secret
}
if len(whTrigger) == 0 {
continue
}
out := ""
url, err := cli.BuildConfigs(c.Namespace).WebHookURL(c.Name, &trigger)
if err != nil {
out = fmt.Sprintf("<error: %s>", err.Error())
} else {
out = url.String()
}
result[string(trigger.Type)] = out
}
return result
}
var reLongImageID = regexp.MustCompile(`[a-f0-9]{60,}$`)
// shortenImagePullSpec returns a version of the pull spec intended for display, which may
// result in the image not being usable via cut-and-paste for users.
func shortenImagePullSpec(spec string) string {
if reLongImageID.MatchString(spec) {
return spec[:len(spec)-50] + "..."
}
return spec
}
func formatImageStreamTags(out *tabwriter.Writer, stream *imageapi.ImageStream) {
if len(stream.Status.Tags) == 0 && len(stream.Spec.Tags) == 0 {
fmt.Fprintf(out, "Tags:\t<none>\n")
return
}
fmt.Fprint(out, "\nTag\tSpec\tCreated\tPullSpec\tImage\n")
sortedTags := []string{}
for k := range stream.Status.Tags {
sortedTags = append(sortedTags, k)
}
for k := range stream.Spec.Tags {
if _, ok := stream.Status.Tags[k]; !ok {
sortedTags = append(sortedTags, k)
}
}
hasScheduled, hasInsecure := false, false
imageapi.PrioritizeTags(sortedTags)
for _, tag := range sortedTags {
tagRef, ok := stream.Spec.Tags[tag]
specTag := ""
scheduled := false
insecure := false
if ok {
if tagRef.From != nil {
namePair := ""
if len(tagRef.From.Namespace) > 0 && tagRef.From.Namespace != stream.Namespace {
namePair = fmt.Sprintf("%s/%s", tagRef.From.Namespace, tagRef.From.Name)
} else {
namePair = tagRef.From.Name
}
switch tagRef.From.Kind {
case "ImageStreamTag", "ImageStreamImage":
specTag = namePair
case "DockerImage":
specTag = tagRef.From.Name
default:
specTag = fmt.Sprintf("<unknown %s> %s", tagRef.From.Kind, namePair)
}
}
scheduled, insecure = tagRef.ImportPolicy.Scheduled, tagRef.ImportPolicy.Insecure
hasScheduled = hasScheduled || scheduled
hasInsecure = hasScheduled || insecure
} else {
specTag = "<pushed>"
}
if taglist, ok := stream.Status.Tags[tag]; ok {
if len(taglist.Conditions) > 0 {
var lastTime time.Time
summary := []string{}
for _, condition := range taglist.Conditions {
if condition.LastTransitionTime.After(lastTime) {
lastTime = condition.LastTransitionTime.Time
}
switch condition.Type {
case imageapi.ImportSuccess:
if condition.Status == api.ConditionFalse {
summary = append(summary, fmt.Sprintf("import failed: %s", condition.Message))
}
default:
summary = append(summary, string(condition.Type))
}
}
if len(summary) > 0 {
description := strings.Join(summary, ", ")
if len(description) > 70 {
description = strings.TrimSpace(description[:70-3]) + "..."
}
d := timeNowFn().Sub(lastTime)
fmt.Fprintf(out, "%s\t%s\t%s ago\t%s\t%v\n",
tag,
shortenImagePullSpec(specTag),
units.HumanDuration(d),
"",
description)
}
}
for i, event := range taglist.Items {
d := timeNowFn().Sub(event.Created.Time)
image := event.Image
ref, err := imageapi.ParseDockerImageReference(event.DockerImageReference)
if err == nil {
if ref.ID == image {
image = "<same>"
}
}
pullSpec := event.DockerImageReference
if pullSpec == specTag {
pullSpec = "<same>"
} else {
pullSpec = shortenImagePullSpec(pullSpec)
}
specTag = shortenImagePullSpec(specTag)
if i != 0 {
tag, specTag = "", ""
} else {
extra := ""
if scheduled {
extra += "*"
}
if insecure {
extra += "!"
}
if len(extra) > 0 {
specTag += " " + extra
}
}
fmt.Fprintf(out, "%s\t%s\t%s ago\t%s\t%v\n",
tag,
specTag,
units.HumanDuration(d),
pullSpec,
image)
}
} else {
fmt.Fprintf(out, "%s\t%s\t\t<not available>\t<not available>\n", tag, specTag)
}
}
if hasInsecure || hasScheduled {
fmt.Fprintln(out)
if hasScheduled {
fmt.Fprintf(out, " * tag is scheduled for periodic import\n")
}
if hasInsecure {
fmt.Fprintf(out, " ! tag is insecure and can be imported over HTTP or self-signed HTTPS\n")
}
}
}
func formatImageStreamQuota(out *tabwriter.Writer, c client.Interface, kc kclient.Interface, stream *imageapi.ImageStream) {
quotas, err := kc.ResourceQuotas(stream.Namespace).List(api.ListOptions{})
if err != nil {
return
}
var limit *resource.Quantity
for _, item := range quotas.Items {
// search for smallest ImageStream quota
if value, ok := item.Spec.Hard[imageapi.ResourceImageStreamSize]; ok {
if limit == nil || limit.Cmp(value) > 0 {
limit = &value
}
}
}
if limit != nil {
quantity := imagequota.GetImageStreamSize(c, stream, make(map[string]*imageapi.Image))
scale := mega
if quantity.Value() >= (1<<giga.scale) || limit.Value() >= (1<<giga.scale) {
scale = giga
}
formatString(out, "Quota Usage", fmt.Sprintf("%s / %s",
formatQuantity(quantity, scale), formatQuantity(limit, scale)))
}
}
type scale struct {
scale uint64
unit string
}
var (
mega = scale{20, "MiB"}
giga = scale{30, "GiB"}
)
// formatQuantity prints quantity according to passed scale. Manual scaling was
// done here to make sure we print correct binary values for quantity.
func formatQuantity(quantity *resource.Quantity, scale scale) string {
integer := quantity.Value() >> scale.scale
// fraction is the reminder of a division shifted by one order of magnitude
fraction := (quantity.Value() % (1 << scale.scale)) >> (scale.scale - 10)
// additionally we present only 2 digits after dot, so divide by 10
fraction = fraction / 10
if fraction > 0 {
return fmt.Sprintf("%d.%02d%s", integer, fraction, scale.unit)
}
return fmt.Sprintf("%d%s", integer, scale.unit)
}