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util.go
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util.go
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package k6
import (
"encoding/json"
"errors"
"fmt"
"net/http"
"os"
"path"
"strings"
"github.com/containerd/containerd/remotes"
"github.com/containerd/containerd/remotes/docker"
"github.com/deislabs/oras/pkg/oras"
"github.com/docker/docker/client"
"github.com/dop251/goja"
"github.com/goharbor/xk6-harbor/pkg/util"
"github.com/google/uuid"
"github.com/opencontainers/go-digest"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
log "github.com/sirupsen/logrus"
"go.k6.io/k6/js/common"
"go.k6.io/k6/js/modules"
)
type (
Option struct {
Scheme string // http or https
Host string
Username string
Password string
Insecure bool // Allow insecure server connections when using SSL
}
Images struct {
vu modules.VU
option *Option
initialized bool
Client *client.Client
}
)
func (d *Images) SetupClient() {
cli, err := client.NewClientWithOpts(client.FromEnv)
if err != nil {
panic(err)
}
d.Client = cli
}
type PushOption struct {
Ref string
Store *ContentStore
Blobs []ocispec.Descriptor
}
func (d *Images) Push(option PushOption, args ...goja.Value) string {
d.mustInitialized()
resolver := d.makeResolver(args...)
ref := d.getRef(option.Ref)
// this config makes the harbor identify the artifact as image
configBytes, _ := json.Marshal(map[string]interface{}{"User": uuid.New().String()})
config := ocispec.Descriptor{
MediaType: ocispec.MediaTypeImageConfig,
Digest: digest.FromBytes(configBytes),
Size: int64(len(configBytes)),
}
_, err := writeBlob(option.Store.RootPath, configBytes)
Checkf(d.vu.Runtime(), err, "faied to prepare the config for the %s", ref)
manifest, err := oras.Push(d.vu.Context(), resolver, ref, option.Store.Store, option.Blobs, oras.WithConfig(config))
Checkf(d.vu.Runtime(), err, "failed to push %s", ref)
return manifest.Digest.String()
}
func (d *Images) mustInitialized() {
if !d.initialized {
common.Throw(d.vu.Runtime(), errors.New("harbor module not initialized"))
}
}
func (d *Images) getRef(ref string) string {
if !strings.HasPrefix(ref, d.option.Host) {
return d.option.Host + "/" + ref
}
return ref
}
func writeBlob(rootPath string, data []byte) (digest.Digest, error) {
dgt := digest.FromBytes(data)
dir := path.Join(rootPath, "blobs", dgt.Algorithm().String())
if err := os.MkdirAll(dir, 0755); err != nil {
return "", err
}
filename := path.Join(dir, dgt.Hex())
if err := os.WriteFile(filename, data, 0664); err != nil {
return "", err
}
return dgt, nil
}
func Checkf(rt *goja.Runtime, err error, format string, a ...interface{}) {
if err == nil {
return
}
common.Throw(
rt,
fmt.Errorf("%s, error: %s", fmt.Sprintf(format, a...), err),
)
}
func (d *Images) makeResolver(args ...goja.Value) remotes.Resolver {
d.mustInitialized()
log.StandardLogger().SetLevel(log.ErrorLevel)
var transport http.RoundTripper
if d.option.Insecure {
transport = util.NewInsecureTransport()
} else {
transport = util.NewDefaultTransport()
}
client := &http.Client{Transport: transport}
authorizer := docker.NewAuthorizer(client, func(host string) (string, string, error) {
if host == d.option.Host {
return d.option.Username, d.option.Password, nil
}
return "", "", nil
})
plainHTTP := func(host string) (bool, error) {
if host == d.option.Host {
return d.option.Scheme == "http", nil
}
return false, nil // default is https
}
return docker.NewResolver(docker.ResolverOptions{
Hosts: docker.ConfigureDefaultRegistries(
docker.WithAuthorizer(authorizer),
docker.WithClient(client),
docker.WithPlainHTTP(plainHTTP),
),
})
}