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package resources
import (
"context"
"io"
"math/rand"
"strconv"
"time"
"github.com/docker/go-p9p"
v1 "k8s.io/api/apps/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/labels"
appsv1 "k8s.io/client-go/informers/apps/v1"
"sigs.k8s.io/yaml"
)
type Deployments struct {
namespace string
deploymentInformer appsv1.DeploymentInformer
session Session
info *p9p.Dir
readdir *p9p.Readdir
}
func NewDeployments(namespace string, session Session) *Deployments {
deploymentInformer := session.Informer().Apps().V1().Deployments()
return &Deployments{
namespace: namespace,
deploymentInformer: deploymentInformer,
session: session,
}
}
func (r *Deployments) Info() p9p.Dir {
if r.info != nil {
return *r.info
}
dir := p9p.Dir{}
dir.Qid.Path = rand.Uint64()
dir.Qid.Version = 0
dir.Name = "deployments"
dir.Mode = 0664
dir.Length = 0
dir.AccessTime = time.Now()
dir.ModTime = time.Now()
dir.MUID = "none"
uname, _ := r.session.GetAuth()
dir.UID = uname
dir.GID = uname
dir.Qid.Type |= p9p.QTDIR
dir.Mode |= p9p.DMDIR
r.info = &dir
return dir
}
func (r *Deployments) Get(name string) (Ref, error) {
deployment, err := r.deploymentInformer.Lister().Deployments(r.namespace).Get(name)
if apierrors.IsNotFound(err) {
return nil, p9p.ErrNotfound
}
if err != nil {
return nil, err
}
return NewDeploymentRef(deployment, r.session), nil
}
func (r *Deployments) Read(ctx context.Context, p []byte, offset int64) (n int, err error) {
if r.readdir != nil {
return r.readdir.Read(ctx, p, offset)
}
deployments, err := r.deploymentInformer.Lister().Deployments(r.namespace).List(labels.Everything())
if err != nil {
return 0, err
}
deploymentRefs := make([]Ref, 0, len(deployments))
for _, deployment := range deployments {
deployment := deployment
deploymentRefs = append(deploymentRefs, NewDeploymentRef(deployment, r.session))
}
r.readdir = p9p.NewReaddir(p9p.NewCodec(), func() (p9p.Dir, error) {
if len(deploymentRefs) == 0 {
return p9p.Dir{}, io.EOF
}
deployment := deploymentRefs[0]
deploymentRefs = deploymentRefs[1:]
return deployment.Info(), nil
})
n, err = r.readdir.Read(ctx, p, offset)
return n, err
}
type DeploymentRef struct {
deployment *v1.Deployment
session Session
info *p9p.Dir
readdir *p9p.Readdir
children map[string]Ref
}
func NewDeploymentRef(deployment *v1.Deployment, session Session) *DeploymentRef {
y, _ := yaml.Marshal(deployment)
children := map[string]Ref{
"data.yaml": &Static{
name: "data.yaml",
content: y,
session: session,
},
"scale": &Static{
name: "scale",
content: []byte(strconv.Itoa(int(*deployment.Spec.Replicas))),
session: session,
},
}
return &DeploymentRef{
deployment: deployment,
session: session,
children: children,
}
}
func (r *DeploymentRef) Info() p9p.Dir {
if r.info != nil {
return *r.info
}
dir := p9p.Dir{}
dir.Qid.Path = rand.Uint64()
dir.Qid.Version = 0
dir.Name = r.deployment.Name
dir.Mode = 0664
dir.Length = 0
dir.AccessTime = r.deployment.CreationTimestamp.Time
dir.ModTime = r.deployment.CreationTimestamp.Time
dir.MUID = "none"
uname, _ := r.session.GetAuth()
dir.UID = uname
dir.GID = uname
dir.Qid.Type |= p9p.QTDIR
dir.Mode |= p9p.DMDIR
r.info = &dir
return dir
}
func (r *DeploymentRef) Get(name string) (Ref, error) {
ref, ok := r.children[name]
if !ok {
return nil, p9p.ErrNotfound
}
return ref, nil
}
func (r *DeploymentRef) Read(ctx context.Context, p []byte, offset int64) (int, error) {
if r.readdir != nil {
return r.readdir.Read(ctx, p, offset)
}
dir := make([]p9p.Dir, 0, len(r.children))
for _, child := range r.children {
dir = append(dir, child.Info())
}
r.readdir = p9p.NewFixedReaddir(p9p.NewCodec(), dir)
return r.readdir.Read(ctx, p, offset)
}
|
