71 lines
1.7 KiB
Go
71 lines
1.7 KiB
Go
package container
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import (
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"fmt"
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"os"
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"strings"
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entry "github.com/stackanetes/kubernetes-entrypoint/entrypoint"
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"github.com/stackanetes/kubernetes-entrypoint/logger"
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"github.com/stackanetes/kubernetes-entrypoint/util"
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"github.com/stackanetes/kubernetes-entrypoint/util/env"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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const (
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PodNameNotSetError = "Environment variable POD_NAME not set"
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NamespaceNotSupported = "Container doesn't accept namespace"
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)
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type Container struct {
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name string
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}
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func init() {
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containerEnv := fmt.Sprintf("%sCONTAINER", entry.DependencyPrefix)
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if util.ContainsSeparator(containerEnv, "Container") {
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logger.Error.Printf(NamespaceNotSupported)
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os.Exit(1)
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}
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if containerDeps := env.SplitEnvToDeps(containerEnv); containerDeps != nil {
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if len(containerDeps) > 0 {
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for _, dep := range containerDeps {
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entry.Register(NewContainer(dep.Name))
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}
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}
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}
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}
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func NewContainer(name string) Container {
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return Container{name: name}
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}
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func (c Container) IsResolved(entrypoint entry.EntrypointInterface) (bool, error) {
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myPodName := os.Getenv("POD_NAME")
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if myPodName == "" {
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return false, fmt.Errorf(PodNameNotSetError)
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}
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pod, err := entrypoint.Client().Pods(env.GetBaseNamespace()).Get(myPodName, metav1.GetOptions{})
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if err != nil {
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return false, err
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}
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if strings.Contains(c.name, env.Separator) {
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return false, fmt.Errorf("Specifing namespace is not permitted")
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}
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containers := pod.Status.ContainerStatuses
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for _, container := range containers {
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if container.Name == c.name && container.Ready {
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return true, nil
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}
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}
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return false, nil
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}
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func (c Container) String() string {
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return fmt.Sprintf("Container %s", c.name)
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}
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