/
gcp_image.go
223 lines (177 loc) · 5.34 KB
/
gcp_image.go
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package gcp
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"strings"
"sync"
"github.com/golang/glog"
compute "google.golang.org/api/compute/v1"
"github.com/apporbit/infranetes/pkg/common/gcp"
"github.com/apporbit/infranetes/pkg/infranetes/provider"
kubeapi "k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1/runtime"
)
type gcpImageProvider struct {
lock sync.RWMutex
config *gcp.GceConfig
imageMap map[string]*kubeapi.Image
}
func init() {
provider.ImageProviders.RegisterProvider("gcp", NewGCPImageProvider)
}
func NewGCPImageProvider() (provider.ImageProvider, error) {
var conf gcp.GceConfig
file, err := ioutil.ReadFile("gce.json")
if err != nil {
return nil, fmt.Errorf("File error: %v\n", err)
}
json.Unmarshal(file, &conf)
if conf.SourceImage == "" || conf.Zone == "" || conf.Project == "" || conf.Scope == "" || conf.AuthFile == "" || conf.Network == "" || conf.Subnet == "" {
msg := fmt.Sprintf("Failed to read in complete config file: conf = %+v", conf)
glog.Info(msg)
return nil, fmt.Errorf(msg)
}
provider := &gcpImageProvider{
config: &conf,
imageMap: make(map[string]*kubeapi.Image),
}
return provider, nil
}
func (p *gcpImageProvider) ListImages(req *kubeapi.ListImagesRequest) (*kubeapi.ListImagesResponse, error) {
p.lock.RLock()
defer p.lock.RUnlock()
result := []*kubeapi.Image{}
if req.Filter != nil && req.Filter.Image != nil {
if image, ok := p.imageMap[req.Filter.Image.Image]; ok {
result = append(result, image)
}
} else {
for _, image := range p.imageMap {
result = append(result, image)
}
}
resp := &kubeapi.ListImagesResponse{
Images: result,
}
return resp, nil
}
func (p *gcpImageProvider) ImageStatus(req *kubeapi.ImageStatusRequest) (*kubeapi.ImageStatusResponse, error) {
name := req.Image.Image
if len(strings.Split(name, ":")) == 1 {
name += ":latest"
req.Image.Image = name
}
newreq := &kubeapi.ListImagesRequest{
Filter: &kubeapi.ImageFilter{
Image: req.Image,
},
}
listresp, err := p.ListImages(newreq)
if err != nil {
return nil, err
}
switch len(listresp.Images) {
case 0:
return &kubeapi.ImageStatusResponse{}, nil
case 1:
return &kubeapi.ImageStatusResponse{Image: listresp.Images[0]}, nil
default:
return nil, fmt.Errorf("ImageStatus returned more than one image: %+v", listresp.Images)
}
}
func toRuntimeAPIImage(image *compute.Image) (*kubeapi.Image, error) {
if image == nil {
return nil, errors.New("unable to convert a nil pointer to a runtime API image")
}
size := uint64(image.ArchiveSizeBytes)
repoTag := image.Labels["infranetes-name"] + ":" + image.Labels["infranetes-version"]
glog.Infof("RepoTag = %v", repoTag)
return &kubeapi.Image{
Id: image.Name,
RepoTags: []string{repoTag},
RepoDigests: []string{image.Name},
Size_: size,
}, nil
}
func (p *gcpImageProvider) PullImage(req *kubeapi.PullImageRequest) (*kubeapi.PullImageResponse, error) {
s, err := gcp.GetService(p.config.AuthFile, p.config.Project, p.config.Zone, []string{p.config.Scope})
if err != nil {
return nil, fmt.Errorf("PullImage: can't get gcp service %v", err)
}
splits := strings.Split(req.Image.Image, "/")
var project string
var fullname string
switch len(splits) {
case 1:
project = s.Project
fullname = splits[0]
break
case 2:
project = splits[0]
fullname = splits[1]
break
default:
return nil, fmt.Errorf("PullImage: can't parse %v", req.Image.Image)
}
splits = strings.Split(fullname, ":")
name := splits[0]
var version string
switch len(splits) {
case 1:
version = "latest"
break
case 2:
version = splits[1]
break
default:
return nil, fmt.Errorf("PullImage: can't parse %v", fullname)
}
glog.Infof("PullImage: Looking for name = %v and version = %v", name, version)
nextPageToken := ""
for {
list, err := s.Service.Images.List(project).PageToken(nextPageToken).Do()
if err != nil {
return nil, fmt.Errorf("ListInstances failed: %v", err)
}
for _, i := range list.Items {
glog.Infof("PullImage: image name = %v, image labels = %v", i.Name, i.Labels)
if i.Labels["infranetes-name"] == name && i.Labels["infranetes-version"] == version {
glog.Infof("PullImage: found with image %v", i.Name)
p.lock.Lock()
defer p.lock.Unlock()
image, err := toRuntimeAPIImage(i)
if err != nil {
return nil, fmt.Errorf("PullImage: toRuntimeAPIImage failed: %v", err)
}
p.imageMap[req.Image.Image] = image
return &kubeapi.PullImageResponse{ImageRef: i.Name}, nil
}
glog.Infof("skipped %v as %v != %v and $%v != %v", i.Name, name, i.Labels["infranetes-name"], version, i.Labels["infranetes-version"])
}
nextPageToken = list.NextPageToken
if nextPageToken == "" {
break
}
}
return nil, fmt.Errorf("PullImage: couldn't find any image matching %v", req.Image.Image)
}
func (p *gcpImageProvider) RemoveImage(req *kubeapi.RemoveImageRequest) (*kubeapi.RemoveImageResponse, error) {
p.lock.Lock()
defer p.lock.Unlock()
delete(p.imageMap, req.Image.Image)
return &kubeapi.RemoveImageResponse{}, nil
}
func (p *gcpImageProvider) Integrate(pp provider.PodProvider) bool {
switch pp.(type) {
case *gcpPodProvider:
app := pp.(*gcpPodProvider)
//aws shouldn't boot on pod run if using container images
app.imagePod = true
return true
}
return false
}
func (p *gcpImageProvider) Translate(spec *kubeapi.ImageSpec) (string, error) {
return spec.Image, nil
}