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feat: use CAPI utils for CAPI requests
Updated dependencies to the latest version to align with `capi-utils`
versions.
That lead to several changes in the code:
- No longer using `runtime-client` in the code as it no longer has `runtime.Object` interface
compatibility.
- `capi-utils` manager is now used to query deployed clusters
information.
- `kubernetes` runtime now operates only `Unstructured` Objects.
- Thanks to migration to `Unstructured` `Runtime.List` now returns `[]interface{}` instead of object containing `items` field.
Signed-off-by: Artem Chernyshev <artem.chernyshev@talos-systems.com>- Loading branch information
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,228 @@ | ||
| // this source code form is subject to the terms of the mozilla public | ||
| // license, v. 2.0. if a copy of the mpl was not distributed with this | ||
| // file, you can obtain one at http://mozilla.org/mpl/2.0/. | ||
|
|
||
| // Package capi contains capi util helpers specific to Theila. | ||
| package capi | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| "github.com/pkg/errors" | ||
| apierrors "k8s.io/apimachinery/pkg/api/errors" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" | ||
| utilversion "k8s.io/apimachinery/pkg/util/version" | ||
| "k8s.io/client-go/discovery" | ||
| "k8s.io/client-go/kubernetes" | ||
| "k8s.io/client-go/rest" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| ) | ||
|
|
||
| // this is a copy from clusterapi, unfortunately these vars are not exported. | ||
| const ( | ||
| minVersion = "v1.16.0" | ||
| maxVersion = "v1.22.2" | ||
| ) | ||
|
|
||
| // Proxy custom implementation of clusterapi proxy that allows getting kubeconfig from memory. | ||
| type Proxy struct { | ||
| config *rest.Config | ||
| client client.Client | ||
| } | ||
|
|
||
| // NewProxy creates new proxy. | ||
| func NewProxy(config *rest.Config) *Proxy { | ||
| return &Proxy{ | ||
| config: config, | ||
| } | ||
| } | ||
|
|
||
| // CurrentNamespace implements cluster.Proxy interface. | ||
| func (k *Proxy) CurrentNamespace() (string, error) { | ||
| return "default", nil | ||
| } | ||
|
|
||
| // ValidateKubernetesVersion implements cluster.Proxy interface. | ||
| func (k *Proxy) ValidateKubernetesVersion() error { | ||
| cmp, err := k.compareVersions(minVersion) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if cmp == -1 { | ||
| return fmt.Errorf("unsupported management cluster version: minimum required version is %s", minVersion) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| // ValidateKubernetesMaxVersion implements cluster.Proxy interface. | ||
| func (k *Proxy) ValidateKubernetesMaxVersion() error { | ||
| cmp, err := k.compareVersions(maxVersion) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if cmp == -1 { | ||
| return fmt.Errorf("unsupported management cluster version: maximum required version is %s", maxVersion) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| // GetConfig returns the config for a kubernetes client. | ||
| func (k *Proxy) GetConfig() (*rest.Config, error) { | ||
| return k.config, nil | ||
| } | ||
|
|
||
| // GetContexts implements cluster.Proxy interface. | ||
| func (k *Proxy) GetContexts(string) ([]string, error) { | ||
| return nil, fmt.Errorf("not implemented") | ||
| } | ||
|
|
||
| // NewClient implements cluster.Proxy interface. | ||
| func (k *Proxy) NewClient() (client.Client, error) { | ||
| if k.client != nil { | ||
| return k.client, nil | ||
| } | ||
|
|
||
| var err error | ||
|
|
||
| k.client, err = client.New(k.config, client.Options{Scheme: Scheme}) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return k.client, nil | ||
| } | ||
|
|
||
| // ListResources implements cluster.Proxy interface. | ||
| func (k *Proxy) ListResources(labels map[string]string, namespaces ...string) ([]unstructured.Unstructured, error) { | ||
| cs, err := k.newClientSet() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| c, err := k.NewClient() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // Get all the API resources in the cluster. | ||
| var resourceList []*metav1.APIResourceList | ||
|
|
||
| resourceList, err = cs.Discovery().ServerPreferredResources() | ||
|
|
||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // Select resources with list and delete methods (list is required by this method, delete by the callers of this method) | ||
| resourceList = discovery.FilteredBy(discovery.SupportsAllVerbs{Verbs: []string{"list", "delete"}}, resourceList) | ||
|
|
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| var ret []unstructured.Unstructured | ||
|
|
||
| discard := map[string]struct{}{ | ||
| "daemonsets": {}, | ||
| "deployments": {}, | ||
| "replicasets": {}, | ||
| "networkpolicies": {}, | ||
| "ingresses": {}, | ||
| } | ||
|
|
||
| for _, resourceGroup := range resourceList { | ||
| for _, resourceKind := range resourceGroup.APIResources { | ||
| // Discard the resourceKind that exists in two api groups (we are excluding one of the two groups arbitrarily). | ||
| if _, ok := discard[resourceKind.Name]; resourceGroup.GroupVersion == "extensions/v1beta1" && ok { | ||
| continue | ||
| } | ||
|
|
||
| // List all the object instances of this resourceKind with the given labels | ||
| if resourceKind.Namespaced { | ||
| for _, namespace := range namespaces { | ||
| objList, err := listObjByGVK(c, resourceGroup.GroupVersion, resourceKind.Kind, []client.ListOption{client.MatchingLabels(labels), client.InNamespace(namespace)}) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| ret = append(ret, objList.Items...) | ||
| } | ||
| } else { | ||
| objList, err := listObjByGVK(c, resourceGroup.GroupVersion, resourceKind.Kind, []client.ListOption{client.MatchingLabels(labels)}) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| ret = append(ret, objList.Items...) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return ret, nil | ||
| } | ||
|
|
||
| // GetResourceNames returns the list of resource names which begin with prefix. | ||
| func (k *Proxy) GetResourceNames(groupVersion, kind string, options []client.ListOption, prefix string) ([]string, error) { | ||
| client, err := k.NewClient() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| objList, err := listObjByGVK(client, groupVersion, kind, options) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| var comps []string | ||
|
|
||
| for _, item := range objList.Items { | ||
| name := item.GetName() | ||
|
|
||
| if strings.HasPrefix(name, prefix) { | ||
| comps = append(comps, name) | ||
| } | ||
| } | ||
|
|
||
| return comps, nil | ||
| } | ||
|
|
||
| func (k *Proxy) newClientSet() (*kubernetes.Clientset, error) { | ||
| return kubernetes.NewForConfig(k.config) | ||
| } | ||
|
|
||
| func (k *Proxy) compareVersions(ver string) (int, error) { | ||
| client, err := discovery.NewDiscoveryClientForConfig(k.config) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
|
|
||
| version, err := client.ServerVersion() | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
|
|
||
| var v *utilversion.Version | ||
|
|
||
| if v, err = utilversion.ParseGeneric(version.String()); err != nil { | ||
| return 0, err | ||
| } | ||
|
|
||
| return v.Compare(ver) | ||
| } | ||
|
|
||
| func listObjByGVK(c client.Client, groupVersion, kind string, options []client.ListOption) (*unstructured.UnstructuredList, error) { | ||
| objList := new(unstructured.UnstructuredList) | ||
| objList.SetAPIVersion(groupVersion) | ||
| objList.SetKind(kind) | ||
|
|
||
| if err := c.List(context.Background(), objList, options...); err != nil { | ||
| if !apierrors.IsNotFound(err) { | ||
| return nil, errors.Wrapf(err, "failed to list objects for the %q GroupVersionKind", objList.GroupVersionKind()) | ||
| } | ||
| } | ||
|
|
||
| return objList, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| // This Source Code Form is subject to the terms of the Mozilla Public | ||
| // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| // file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
|
|
||
| package capi | ||
|
|
||
| import ( | ||
| admissionregistration "k8s.io/api/admissionregistration/v1" | ||
| admissionregistrationv1beta1 "k8s.io/api/admissionregistration/v1beta1" | ||
| apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1" | ||
| apiextensionsv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| clientgoscheme "k8s.io/client-go/kubernetes/scheme" | ||
| clusterv1 "sigs.k8s.io/cluster-api/api/v1alpha4" | ||
| clusterctlv1 "sigs.k8s.io/cluster-api/cmd/clusterctl/api/v1alpha3" | ||
| addonsv1 "sigs.k8s.io/cluster-api/exp/addons/api/v1alpha4" | ||
| ) | ||
|
|
||
| // Scheme for CAPI kubernetes client. | ||
| var Scheme = runtime.NewScheme() | ||
|
|
||
| func init() { | ||
| clientgoscheme.AddToScheme(Scheme) //nolint:errcheck | ||
| clusterctlv1.AddToScheme(Scheme) //nolint:errcheck | ||
| clusterv1.AddToScheme(Scheme) //nolint:errcheck | ||
| apiextensionsv1.AddToScheme(Scheme) //nolint:errcheck | ||
| apiextensionsv1beta1.AddToScheme(Scheme) //nolint:errcheck | ||
| admissionregistration.AddToScheme(Scheme) //nolint:errcheck | ||
| admissionregistrationv1beta1.AddToScheme(Scheme) //nolint:errcheck | ||
| addonsv1.AddToScheme(Scheme) //nolint:errcheck | ||
| } |
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