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podman play kube adds the ability for the user to recreate pods and containers
from a Kubernetes YAML file in libpod.

Signed-off-by: baude <bbaude@redhat.com>
This commit is contained in:
baude
2018-12-09 14:26:21 -06:00
parent eddfe6ba62
commit 9b03cacc87
12 changed files with 499 additions and 41 deletions
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34
libpod/kube.go
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@ -30,7 +30,10 @@ func (c *Container) GenerateForKube() (*v1.Pod, error) {
// one v1.Pod description
func (p *Pod) GenerateForKube() (*v1.Pod, []v1.ServicePort, error) {
// Generate the v1.Pod yaml description
var servicePorts []v1.ServicePort
var (
servicePorts []v1.ServicePort
ports []v1.ContainerPort
)
allContainers, err := p.allContainers()
if err != nil {
@ -51,13 +54,13 @@ func (p *Pod) GenerateForKube() (*v1.Pod, []v1.ServicePort, error) {
return nil, servicePorts, err
}
ports, err := ocicniPortMappingToContainerPort(infraContainer.config.PortMappings)
ports, err = ocicniPortMappingToContainerPort(infraContainer.config.PortMappings)
if err != nil {
return nil, servicePorts, err
}
servicePorts = containerPortsToServicePorts(ports)
}
pod, err := p.podWithContainers(allContainers)
pod, err := p.podWithContainers(allContainers, ports)
return pod, servicePorts, err
}
@ -124,18 +127,27 @@ func containersToServicePorts(containers []v1.Container) []v1.ServicePort {
return sps
}
func (p *Pod) podWithContainers(containers []*Container) (*v1.Pod, error) {
var podContainers []v1.Container
func (p *Pod) podWithContainers(containers []*Container, ports []v1.ContainerPort) (*v1.Pod, error) {
var (
podContainers []v1.Container
)
first := true
for _, ctr := range containers {
result, err := containerToV1Container(ctr)
if err != nil {
return nil, err
}
if !ctr.IsInfra() {
result, err := containerToV1Container(ctr)
if err != nil {
return nil, err
}
// We add the original port declarations from the libpod infra container
// to the first kubernetes container description because otherwise we loose
// the original container/port bindings.
if first && len(ports) > 0 {
result.Ports = ports
first = false
}
podContainers = append(podContainers, result)
}
}
return addContainersToPodObject(podContainers, p.Name()), nil
}
@ -150,7 +162,7 @@ func addContainersToPodObject(containers []v1.Container, podName string) *v1.Pod
labels["app"] = removeUnderscores(podName)
om := v12.ObjectMeta{
// The name of the pod is container_name-libpod
Name: fmt.Sprintf("%s-libpod", removeUnderscores(podName)),
Name: fmt.Sprintf("%s", removeUnderscores(podName)),
Labels: labels,
// CreationTimestamp seems to be required, so adding it; in doing so, the timestamp
// will reflect time this is run (not container create time) because the conversion