mirror of https://github.com/containers/podman.git
123 lines
2.8 KiB
Go
123 lines
2.8 KiB
Go
package libpod
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import (
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"github.com/pkg/errors"
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)
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// Contains the public Runtime API for pods
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// A PodCreateOption is a functional option which alters the Pod created by
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// NewPod
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type PodCreateOption func(*Pod) error
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// PodFilter is a function to determine whether a pod is included in command
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// output. Pods to be outputted are tested using the function. A true return
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// will include the pod, a false return will exclude it.
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type PodFilter func(*Pod) bool
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// NewPod makes a new, empty pod
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func (r *Runtime) NewPod(options ...PodCreateOption) (*Pod, error) {
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r.lock.Lock()
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defer r.lock.Unlock()
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if !r.valid {
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return nil, ErrRuntimeStopped
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}
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pod, err := newPod()
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if err != nil {
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return nil, errors.Wrapf(err, "error creating pod")
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}
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for _, option := range options {
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if err := option(pod); err != nil {
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return nil, errors.Wrapf(err, "error running pod create option")
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}
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}
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pod.valid = true
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if err := r.state.AddPod(pod); err != nil {
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return nil, errors.Wrapf(err, "error adding pod to state")
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}
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return nil, ErrNotImplemented
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}
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// RemovePod removes a pod and all containers in it
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// If force is specified, all containers in the pod will be stopped first
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// Otherwise, RemovePod will return an error if any container in the pod is running
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// Remove acts atomically, removing all containers or no containers
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func (r *Runtime) RemovePod(p *Pod, force bool) error {
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return ErrNotImplemented
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}
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// GetPod retrieves a pod by its ID
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func (r *Runtime) GetPod(id string) (*Pod, error) {
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r.lock.RLock()
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defer r.lock.RUnlock()
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if !r.valid {
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return nil, ErrRuntimeStopped
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}
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return r.state.Pod(id)
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}
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// HasPod checks to see if a pod with the given ID exists
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func (r *Runtime) HasPod(id string) (bool, error) {
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r.lock.RLock()
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defer r.lock.RUnlock()
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if !r.valid {
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return false, ErrRuntimeStopped
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}
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return r.state.HasPod(id)
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}
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// LookupPod retrieves a pod by its name or a partial ID
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// If a partial ID is not unique, an error will be returned
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func (r *Runtime) LookupPod(idOrName string) (*Pod, error) {
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r.lock.RLock()
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defer r.lock.RUnlock()
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if !r.valid {
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return nil, ErrRuntimeStopped
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}
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return r.state.LookupPod(idOrName)
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}
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// Pods retrieves all pods
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// Filters can be provided which will determine which pods are included in the
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// output. Multiple filters are handled by ANDing their output, so only pods
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// matching all filters are returned
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func (r *Runtime) Pods(filters ...PodFilter) ([]*Pod, error) {
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r.lock.RLock()
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defer r.lock.RUnlock()
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if !r.valid {
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return nil, ErrRuntimeStopped
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}
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pods, err := r.state.AllPods()
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if err != nil {
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return nil, err
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}
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podsFiltered := make([]*Pod, 0, len(pods))
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for _, pod := range pods {
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include := true
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for _, filter := range filters {
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include = include && filter(pod)
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}
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if include {
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podsFiltered = append(podsFiltered, pod)
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}
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}
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return podsFiltered, nil
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}
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