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util.go
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util.go
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package testutil
import (
"archive/tar"
"bytes"
"crypto/rand"
"encoding/json"
"fmt"
"io"
"io/ioutil"
mrand "math/rand"
"net/http"
"net/url"
"testing"
"time"
"github.com/docker/distribution"
"github.com/docker/distribution/context"
"github.com/docker/distribution/digest"
"github.com/docker/distribution/manifest"
"github.com/docker/distribution/reference"
distclient "github.com/docker/distribution/registry/client"
"github.com/docker/distribution/registry/client/auth"
"github.com/docker/distribution/registry/client/transport"
kapi "k8s.io/kubernetes/pkg/api"
kerrors "k8s.io/kubernetes/pkg/api/errors"
ktestclient "k8s.io/kubernetes/pkg/client/unversioned/testclient"
"k8s.io/kubernetes/pkg/runtime"
imageapi "github.com/openshift/origin/pkg/image/api"
)
func NewImageForManifest(repoName string, rawManifest string, managedByOpenShift bool) (*imageapi.Image, error) {
var versioned manifest.Versioned
if err := json.Unmarshal([]byte(rawManifest), &versioned); err != nil {
return nil, err
}
_, desc, err := distribution.UnmarshalManifest(versioned.MediaType, []byte(rawManifest))
if err != nil {
return nil, err
}
annotations := make(map[string]string)
if managedByOpenShift {
annotations[imageapi.ManagedByOpenShiftAnnotation] = "true"
}
img := &imageapi.Image{
ObjectMeta: kapi.ObjectMeta{
Name: desc.Digest.String(),
Annotations: annotations,
},
DockerImageReference: fmt.Sprintf("localhost:5000/%s@%s", repoName, desc.Digest.String()),
DockerImageManifest: string(rawManifest),
}
if err := imageapi.ImageWithMetadata(img); err != nil {
return nil, err
}
return img, nil
}
// UploadTestBlob generates a random tar file and uploads it to the given repository.
func UploadTestBlob(serverURL *url.URL, creds auth.CredentialStore, repoName string) (distribution.Descriptor, []byte, error) {
rs, ds, err := CreateRandomTarFile()
if err != nil {
return distribution.Descriptor{}, nil, fmt.Errorf("unexpected error generating test layer file: %v", err)
}
dgst := digest.Digest(ds)
ctx := context.Background()
ref, err := reference.ParseNamed(repoName)
if err != nil {
return distribution.Descriptor{}, nil, err
}
var rt http.RoundTripper
if creds != nil {
challengeManager := auth.NewSimpleChallengeManager()
_, err := ping(challengeManager, serverURL.String()+"/v2/", "")
if err != nil {
return distribution.Descriptor{}, nil, err
}
rt = transport.NewTransport(
nil,
auth.NewAuthorizer(
challengeManager,
auth.NewTokenHandler(nil, creds, repoName, "pull", "push"),
auth.NewBasicHandler(creds)))
}
repo, err := distclient.NewRepository(ctx, ref, serverURL.String(), rt)
if err != nil {
return distribution.Descriptor{}, nil, fmt.Errorf("failed to get repository %q: %v", repoName, err)
}
wr, err := repo.Blobs(ctx).Create(ctx)
if err != nil {
return distribution.Descriptor{}, nil, err
}
if _, err := io.Copy(wr, rs); err != nil {
return distribution.Descriptor{}, nil, fmt.Errorf("unexpected error copying to upload: %v", err)
}
desc, err := wr.Commit(ctx, distribution.Descriptor{Digest: dgst})
if err != nil {
return distribution.Descriptor{}, nil, err
}
if _, err := rs.Seek(0, 0); err != nil {
return distribution.Descriptor{}, nil, fmt.Errorf("failed to seak blob reader: %v", err)
}
content, err := ioutil.ReadAll(rs)
if err != nil {
return distribution.Descriptor{}, nil, fmt.Errorf("failed to read blob content: %v", err)
}
return desc, content, nil
}
// createRandomTarFile creates a random tarfile, returning it as an io.ReadSeeker along with its digest. An
// error is returned if there is a problem generating valid content. Inspired by
// github.com/vendor/docker/distribution/testutil/tarfile.go.
func CreateRandomTarFile() (rs io.ReadSeeker, dgst digest.Digest, err error) {
nFiles := 2
target := &bytes.Buffer{}
wr := tar.NewWriter(target)
// Perturb this on each iteration of the loop below.
header := &tar.Header{
Mode: 0644,
ModTime: time.Now(),
Typeflag: tar.TypeReg,
Uname: "randocalrissian",
Gname: "cloudcity",
AccessTime: time.Now(),
ChangeTime: time.Now(),
}
for fileNumber := 0; fileNumber < nFiles; fileNumber++ {
fileSize := mrand.Int63n(1<<9) + 1<<9
header.Name = fmt.Sprint(fileNumber)
header.Size = fileSize
if err := wr.WriteHeader(header); err != nil {
return nil, "", err
}
randomData := make([]byte, fileSize)
// Fill up the buffer with some random data.
n, err := rand.Read(randomData)
if n != len(randomData) {
return nil, "", fmt.Errorf("short read creating random reader: %v bytes != %v bytes", n, len(randomData))
}
if err != nil {
return nil, "", err
}
nn, err := io.Copy(wr, bytes.NewReader(randomData))
if nn != fileSize {
return nil, "", fmt.Errorf("short copy writing random file to tar")
}
if err != nil {
return nil, "", err
}
if err := wr.Flush(); err != nil {
return nil, "", err
}
}
if err := wr.Close(); err != nil {
return nil, "", err
}
dgst = digest.FromBytes(target.Bytes())
return bytes.NewReader(target.Bytes()), dgst, nil
}
const SampleImageManifestSchema1 = `{
"schemaVersion": 1,
"name": "nm/is",
"tag": "latest",
"architecture": "",
"fsLayers": [
{
"blobSum": "sha256:b2c5513bd934a7efb412c0dd965600b8cb00575b585eaff1cb980b69037fe6cd"
},
{
"blobSum": "sha256:2dde6f11a89463bf20dba3b47d8b3b6de7cdcc19e50634e95a18dd95c278768d"
}
],
"history": [
{
"v1Compatibility": "{\"size\":18407936}"
},
{
"v1Compatibility": "{\"size\":19387392}"
}
],
"signatures": [
{
"header": {
"jwk": {
"crv": "P-256",
"kid": "5HTY:A24B:L6PG:TQ3G:GMAK:QGKZ:ICD4:S7ZJ:P5JX:UTMP:XZLK:ZXVH",
"kty": "EC",
"x": "j5YnDSyrVIt3NquUKvcZIpbfeD8HLZ7BVBFL4WutRBM",
"y": "PBgFAZ3nNakYN3H9enhrdUrQ_HPYzb8oX5rtJxJo1Y8"
},
"alg": "ES256"
},
"signature": "1rXiEmWnf9eL7m7Wy3K4l25-Zv2XXl5GgqhM_yjT0ujPmTn0uwfHcCWlweHa9gput3sECj507eQyGpBOF5rD6Q",
"protected": "eyJmb3JtYXRMZW5ndGgiOjQ4NSwiZm9ybWF0VGFpbCI6IkNuMCIsInRpbWUiOiIyMDE2LTA3LTI2VDExOjQ2OjQ2WiJ9"
}
]
}`
// GetFakeImageGetHandler returns a reaction function for use with wake os client returning one of given image
// objects if found.
func GetFakeImageGetHandler(t *testing.T, iss ...imageapi.Image) ktestclient.ReactionFunc {
return func(action ktestclient.Action) (handled bool, ret runtime.Object, err error) {
switch a := action.(type) {
case ktestclient.GetAction:
for _, is := range iss {
if a.GetName() == is.Name {
t.Logf("images get handler: returning image %s", is.Name)
return true, &is, nil
}
}
err := kerrors.NewNotFound(kapi.Resource("images"), a.GetName())
t.Logf("image get handler: %v", err)
return true, nil, err
}
return false, nil, nil
}
}
// TestNewImageStreamObject returns a new image stream object filled with given values.
func TestNewImageStreamObject(namespace, name, tag, imageName, dockerImageReference string) *imageapi.ImageStream {
return &imageapi.ImageStream{
ObjectMeta: kapi.ObjectMeta{
Namespace: namespace,
Name: name,
},
Status: imageapi.ImageStreamStatus{
Tags: map[string]imageapi.TagEventList{
tag: {
Items: []imageapi.TagEvent{
{
Image: imageName,
DockerImageReference: dockerImageReference,
},
},
},
},
},
}
}
type testCredentialStore struct {
username string
password string
refreshTokens map[string]string
}
var _ auth.CredentialStore = &testCredentialStore{}
// NewBasicCredentialStore returns a test credential store for use with registry token handler and/or basic
// handler.
func NewBasicCredentialStore(username, password string) auth.CredentialStore {
return &testCredentialStore{
username: username,
password: password,
}
}
func (tcs *testCredentialStore) Basic(*url.URL) (string, string) {
return tcs.username, tcs.password
}
func (tcs *testCredentialStore) RefreshToken(u *url.URL, service string) string {
return tcs.refreshTokens[service]
}
func (tcs *testCredentialStore) SetRefreshToken(u *url.URL, service string, token string) {
if tcs.refreshTokens != nil {
tcs.refreshTokens[service] = token
}
}
// ping pings the provided endpoint to determine its required authorization challenges.
// If a version header is provided, the versions will be returned.
func ping(manager auth.ChallengeManager, endpoint, versionHeader string) ([]auth.APIVersion, error) {
resp, err := http.Get(endpoint)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if err := manager.AddResponse(resp); err != nil {
return nil, err
}
return auth.APIVersions(resp, versionHeader), err
}