mirror of https://github.com/helm/helm
Remington Reackhof
7 years ago
parent
d4ccef7ba7
commit
9af1018bd3
@ -0,0 +1,258 @@
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/*
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Copyright 2017 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package driver // import "k8s.io/helm/pkg/storage/driver"
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import (
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"fmt"
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"strconv"
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"strings"
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"time"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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kblabels "k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/util/validation"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/internalversion"
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rspb "k8s.io/helm/pkg/proto/hapi/release"
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)
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var _ Driver = (*Secrets)(nil)
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// SecretsDriverName is the string name of the driver.
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const SecretsDriverName = "Secret"
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// Secrets is a wrapper around an implementation of a kubernetes
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// SecretsInterface.
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type Secrets struct {
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impl internalversion.SecretInterface
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Log func(string, ...interface{})
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}
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// NewSecrets initializes a new Secrets wrapping an implmenetation of
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// the kubernetes SecretsInterface.
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func NewSecrets(impl internalversion.SecretInterface) *Secrets {
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return &Secrets{
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impl: impl,
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Log: func(_ string, _ ...interface{}) {},
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}
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}
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// Name returns the name of the driver.
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func (secrets *Secrets) Name() string {
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return SecretsDriverName
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}
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// Get fetches the release named by key. The corresponding release is returned
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// or error if not found.
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func (secrets *Secrets) Get(key string) (*rspb.Release, error) {
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// fetch the secret holding the release named by key
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obj, err := secrets.impl.Get(key, metav1.GetOptions{})
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if err != nil {
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if apierrors.IsNotFound(err) {
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return nil, ErrReleaseNotFound(key)
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}
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secrets.Log("get: failed to get %q: %s", key, err)
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return nil, err
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}
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// found the secret, decode the base64 data string
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r, err := decodeRelease(string(obj.Data["release"]))
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if err != nil {
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secrets.Log("get: failed to decode data %q: %s", key, err)
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return nil, err
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}
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// return the release object
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return r, nil
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}
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// List fetches all releases and returns the list releases such
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// that filter(release) == true. An error is returned if the
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// secret fails to retrieve the releases.
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func (secrets *Secrets) List(filter func(*rspb.Release) bool) ([]*rspb.Release, error) {
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lsel := kblabels.Set{"OWNER": "TILLER"}.AsSelector()
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opts := metav1.ListOptions{LabelSelector: lsel.String()}
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list, err := secrets.impl.List(opts)
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if err != nil {
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secrets.Log("list: failed to list: %s", err)
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return nil, err
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}
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var results []*rspb.Release
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// iterate over the secrets object list
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// and decode each release
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for _, item := range list.Items {
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rls, err := decodeRelease(string(item.Data["release"]))
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if err != nil {
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secrets.Log("list: failed to decode release: %v: %s", item, err)
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continue
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}
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if filter(rls) {
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results = append(results, rls)
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}
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}
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return results, nil
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}
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// Query fetches all releases that match the provided map of labels.
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// An error is returned if the secret fails to retrieve the releases.
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func (secrets *Secrets) Query(labels map[string]string) ([]*rspb.Release, error) {
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ls := kblabels.Set{}
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for k, v := range labels {
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if errs := validation.IsValidLabelValue(v); len(errs) != 0 {
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return nil, fmt.Errorf("invalid label value: %q: %s", v, strings.Join(errs, "; "))
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}
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ls[k] = v
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}
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opts := metav1.ListOptions{LabelSelector: ls.AsSelector().String()}
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list, err := secrets.impl.List(opts)
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if err != nil {
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secrets.Log("query: failed to query with labels: %s", err)
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return nil, err
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}
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if len(list.Items) == 0 {
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return nil, ErrReleaseNotFound(labels["NAME"])
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}
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var results []*rspb.Release
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for _, item := range list.Items {
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rls, err := decodeRelease(string(item.Data["release"]))
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if err != nil {
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secrets.Log("query: failed to decode release: %s", err)
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continue
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}
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results = append(results, rls)
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}
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return results, nil
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}
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// Create creates a new Secret holding the release. If the
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// Secret already exists, ErrReleaseExists is returned.
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func (secrets *Secrets) Create(key string, rls *rspb.Release) error {
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// set labels for secrets object meta data
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var lbs labels
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lbs.init()
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lbs.set("CREATED_AT", strconv.Itoa(int(time.Now().Unix())))
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// create a new secret to hold the release
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obj, err := newSecretsObject(key, rls, lbs)
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if err != nil {
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secrets.Log("create: failed to encode release %q: %s", rls.Name, err)
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return err
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}
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// push the secret object out into the kubiverse
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if _, err := secrets.impl.Create(obj); err != nil {
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if apierrors.IsAlreadyExists(err) {
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return ErrReleaseExists(rls.Name)
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}
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secrets.Log("create: failed to create: %s", err)
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return err
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}
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return nil
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}
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// Update updates the Secret holding the release. If not found
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// the Secret is created to hold the release.
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func (secrets *Secrets) Update(key string, rls *rspb.Release) error {
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// set labels for secrets object meta data
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var lbs labels
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lbs.init()
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lbs.set("MODIFIED_AT", strconv.Itoa(int(time.Now().Unix())))
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// create a new secret object to hold the release
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obj, err := newSecretsObject(key, rls, lbs)
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if err != nil {
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secrets.Log("update: failed to encode release %q: %s", rls.Name, err)
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return err
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}
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// push the secret object out into the kubiverse
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_, err = secrets.impl.Update(obj)
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if err != nil {
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secrets.Log("update: failed to update: %s", err)
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return err
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}
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return nil
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}
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// Delete deletes the Secret holding the release named by key.
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func (secrets *Secrets) Delete(key string) (rls *rspb.Release, err error) {
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// fetch the release to check existence
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if rls, err = secrets.Get(key); err != nil {
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if apierrors.IsNotFound(err) {
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return nil, ErrReleaseExists(rls.Name)
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}
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secrets.Log("delete: failed to get release %q: %s", key, err)
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return nil, err
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}
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// delete the release
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if err = secrets.impl.Delete(key, &metav1.DeleteOptions{}); err != nil {
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return rls, err
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}
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return rls, nil
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}
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// newSecretsObject constructs a kubernetes Secret object
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// to store a release. Each secret data entry is the base64
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// encoded string of a release's binary protobuf encoding.
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//
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// The following labels are used within each secret:
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//
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// "MODIFIED_AT" - timestamp indicating when this secret was last modified. (set in Update)
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// "CREATED_AT" - timestamp indicating when this secret was created. (set in Create)
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// "VERSION" - version of the release.
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// "STATUS" - status of the release (see proto/hapi/release.status.pb.go for variants)
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// "OWNER" - owner of the secret, currently "TILLER".
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// "NAME" - name of the release.
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//
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func newSecretsObject(key string, rls *rspb.Release, lbs labels) (*api.Secret, error) {
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const owner = "TILLER"
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// encode the release
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s, err := encodeRelease(rls)
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if err != nil {
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return nil, err
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}
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if lbs == nil {
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lbs.init()
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}
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// apply labels
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lbs.set("NAME", rls.Name)
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lbs.set("OWNER", owner)
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lbs.set("STATUS", rspb.Status_Code_name[int32(rls.Info.Status.Code)])
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lbs.set("VERSION", strconv.Itoa(int(rls.Version)))
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// create and return secret object
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return &api.Secret{
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ObjectMeta: metav1.ObjectMeta{
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Name: key,
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Labels: lbs.toMap(),
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},
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Data: map[string][]byte{"release": []byte(s)},
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}, nil
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}
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@ -0,0 +1,186 @@
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/*
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Copyright 2017 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package driver
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import (
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"encoding/base64"
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"reflect"
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"testing"
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"github.com/gogo/protobuf/proto"
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"k8s.io/kubernetes/pkg/api"
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rspb "k8s.io/helm/pkg/proto/hapi/release"
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)
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func TestSecretName(t *testing.T) {
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c := newTestFixtureSecrets(t)
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if c.Name() != SecretsDriverName {
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t.Errorf("Expected name to be %q, got %q", SecretsDriverName, c.Name())
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}
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}
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func TestSecretGet(t *testing.T) {
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vers := int32(1)
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name := "smug-pigeon"
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namespace := "default"
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key := testKey(name, vers)
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rel := releaseStub(name, vers, namespace, rspb.Status_DEPLOYED)
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secrets := newTestFixtureSecrets(t, []*rspb.Release{rel}...)
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// get release with key
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got, err := secrets.Get(key)
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if err != nil {
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t.Fatalf("Failed to get release: %s", err)
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}
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// compare fetched release with original
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if !reflect.DeepEqual(rel, got) {
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t.Errorf("Expected {%q}, got {%q}", rel, got)
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}
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}
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func TestUNcompressedSecretGet(t *testing.T) {
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vers := int32(1)
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name := "smug-pigeon"
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namespace := "default"
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key := testKey(name, vers)
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rel := releaseStub(name, vers, namespace, rspb.Status_DEPLOYED)
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// Create a test fixture which contains an uncompressed release
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secret, err := newSecretsObject(key, rel, nil)
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if err != nil {
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t.Fatalf("Failed to create secret: %s", err)
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}
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b, err := proto.Marshal(rel)
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if err != nil {
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t.Fatalf("Failed to marshal release: %s", err)
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}
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secret.Data["release"] = []byte(base64.StdEncoding.EncodeToString(b))
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var mock MockSecretsInterface
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mock.objects = map[string]*api.Secret{key: secret}
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secrets := NewSecrets(&mock)
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// get release with key
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got, err := secrets.Get(key)
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if err != nil {
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t.Fatalf("Failed to get release: %s", err)
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}
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// compare fetched release with original
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if !reflect.DeepEqual(rel, got) {
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t.Errorf("Expected {%q}, got {%q}", rel, got)
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}
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}
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func TestSecretList(t *testing.T) {
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secrets := newTestFixtureSecrets(t, []*rspb.Release{
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releaseStub("key-1", 1, "default", rspb.Status_DELETED),
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releaseStub("key-2", 1, "default", rspb.Status_DELETED),
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releaseStub("key-3", 1, "default", rspb.Status_DEPLOYED),
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releaseStub("key-4", 1, "default", rspb.Status_DEPLOYED),
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releaseStub("key-5", 1, "default", rspb.Status_SUPERSEDED),
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releaseStub("key-6", 1, "default", rspb.Status_SUPERSEDED),
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}...)
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// list all deleted releases
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del, err := secrets.List(func(rel *rspb.Release) bool {
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return rel.Info.Status.Code == rspb.Status_DELETED
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})
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// check
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if err != nil {
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t.Errorf("Failed to list deleted: %s", err)
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}
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if len(del) != 2 {
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t.Errorf("Expected 2 deleted, got %d:\n%v\n", len(del), del)
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}
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// list all deployed releases
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dpl, err := secrets.List(func(rel *rspb.Release) bool {
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return rel.Info.Status.Code == rspb.Status_DEPLOYED
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})
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// check
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if err != nil {
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t.Errorf("Failed to list deployed: %s", err)
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}
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if len(dpl) != 2 {
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t.Errorf("Expected 2 deployed, got %d", len(dpl))
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}
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// list all superseded releases
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ssd, err := secrets.List(func(rel *rspb.Release) bool {
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return rel.Info.Status.Code == rspb.Status_SUPERSEDED
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})
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// check
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if err != nil {
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||||||
|
t.Errorf("Failed to list superseded: %s", err)
|
||||||
|
}
|
||||||
|
if len(ssd) != 2 {
|
||||||
|
t.Errorf("Expected 2 superseded, got %d", len(ssd))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestSecretCreate(t *testing.T) {
|
||||||
|
secrets := newTestFixtureSecrets(t)
|
||||||
|
|
||||||
|
vers := int32(1)
|
||||||
|
name := "smug-pigeon"
|
||||||
|
namespace := "default"
|
||||||
|
key := testKey(name, vers)
|
||||||
|
rel := releaseStub(name, vers, namespace, rspb.Status_DEPLOYED)
|
||||||
|
|
||||||
|
// store the release in a secret
|
||||||
|
if err := secrets.Create(key, rel); err != nil {
|
||||||
|
t.Fatalf("Failed to create release with key %q: %s", key, err)
|
||||||
|
}
|
||||||
|
|
||||||
|
// get the release back
|
||||||
|
got, err := secrets.Get(key)
|
||||||
|
if err != nil {
|
||||||
|
t.Fatalf("Failed to get release with key %q: %s", key, err)
|
||||||
|
}
|
||||||
|
|
||||||
|
// compare created release with original
|
||||||
|
if !reflect.DeepEqual(rel, got) {
|
||||||
|
t.Errorf("Expected {%q}, got {%q}", rel, got)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestSecretUpdate(t *testing.T) {
|
||||||
|
vers := int32(1)
|
||||||
|
name := "smug-pigeon"
|
||||||
|
namespace := "default"
|
||||||
|
key := testKey(name, vers)
|
||||||
|
rel := releaseStub(name, vers, namespace, rspb.Status_DEPLOYED)
|
||||||
|
|
||||||
|
secrets := newTestFixtureSecrets(t, []*rspb.Release{rel}...)
|
||||||
|
|
||||||
|
// modify release status code
|
||||||
|
rel.Info.Status.Code = rspb.Status_SUPERSEDED
|
||||||
|
|
||||||
|
// perform the update
|
||||||
|
if err := secrets.Update(key, rel); err != nil {
|
||||||
|
t.Fatalf("Failed to update release: %s", err)
|
||||||
|
}
|
||||||
|
|
||||||
|
// fetch the updated release
|
||||||
|
got, err := secrets.Get(key)
|
||||||
|
if err != nil {
|
||||||
|
t.Fatalf("Failed to get release with key %q: %s", key, err)
|
||||||
|
}
|
||||||
|
|
||||||
|
// check release has actually been updated by comparing modified fields
|
||||||
|
if rel.Info.Status.Code != got.Info.Status.Code {
|
||||||
|
t.Errorf("Expected status %s, got status %s", rel.Info.Status.Code, got.Info.Status.Code)
|
||||||
|
}
|
||||||
|
}
|
||||||
@ -0,0 +1,85 @@
|
|||||||
|
/*
|
||||||
|
Copyright 2017 The Kubernetes Authors All rights reserved.
|
||||||
|
|
||||||
|
Licensed under the Apache License, Version 2.0 (the "License");
|
||||||
|
you may not use this file except in compliance with the License.
|
||||||
|
You may obtain a copy of the License at
|
||||||
|
|
||||||
|
http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
|
||||||
|
Unless required by applicable law or agreed to in writing, software
|
||||||
|
distributed under the License is distributed on an "AS IS" BASIS,
|
||||||
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||||
|
See the License for the specific language governing permissions and
|
||||||
|
limitations under the License.
|
||||||
|
*/
|
||||||
|
|
||||||
|
package driver // import "k8s.io/helm/pkg/storage/driver"
|
||||||
|
|
||||||
|
import (
|
||||||
|
"bytes"
|
||||||
|
"compress/gzip"
|
||||||
|
"encoding/base64"
|
||||||
|
"io/ioutil"
|
||||||
|
|
||||||
|
"github.com/golang/protobuf/proto"
|
||||||
|
rspb "k8s.io/helm/pkg/proto/hapi/release"
|
||||||
|
)
|
||||||
|
|
||||||
|
var b64 = base64.StdEncoding
|
||||||
|
|
||||||
|
var magicGzip = []byte{0x1f, 0x8b, 0x08}
|
||||||
|
|
||||||
|
// encodeRelease encodes a release returning a base64 encoded
|
||||||
|
// gzipped binary protobuf encoding representation, or error.
|
||||||
|
func encodeRelease(rls *rspb.Release) (string, error) {
|
||||||
|
b, err := proto.Marshal(rls)
|
||||||
|
if err != nil {
|
||||||
|
return "", err
|
||||||
|
}
|
||||||
|
var buf bytes.Buffer
|
||||||
|
w, err := gzip.NewWriterLevel(&buf, gzip.BestCompression)
|
||||||
|
if err != nil {
|
||||||
|
return "", err
|
||||||
|
}
|
||||||
|
if _, err = w.Write(b); err != nil {
|
||||||
|
return "", err
|
||||||
|
}
|
||||||
|
w.Close()
|
||||||
|
|
||||||
|
return b64.EncodeToString(buf.Bytes()), nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// decodeRelease decodes the bytes in data into a release
|
||||||
|
// type. Data must contain a base64 encoded string of a
|
||||||
|
// valid protobuf encoding of a release, otherwise
|
||||||
|
// an error is returned.
|
||||||
|
func decodeRelease(data string) (*rspb.Release, error) {
|
||||||
|
// base64 decode string
|
||||||
|
b, err := b64.DecodeString(data)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
|
||||||
|
// For backwards compatibility with releases that were stored before
|
||||||
|
// compression was introduced we skip decompression if the
|
||||||
|
// gzip magic header is not found
|
||||||
|
if bytes.Equal(b[0:3], magicGzip) {
|
||||||
|
r, err := gzip.NewReader(bytes.NewReader(b))
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
b2, err := ioutil.ReadAll(r)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
b = b2
|
||||||
|
}
|
||||||
|
|
||||||
|
var rls rspb.Release
|
||||||
|
// unmarshal protobuf bytes
|
||||||
|
if err := proto.Unmarshal(b, &rls); err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
return &rls, nil
|
||||||
|
}
|
||||||
Loading…
Reference in new issue