github/kubernetes
1
0
Fork 0
mirror of https://github.com/k3s-io/kubernetes.git synced 2026-01-04 23:17:50 +00:00
Code Issues Projects Releases Wiki Activity

handle non-generated client removal

Browse Source
This commit is contained in:
deads2k
2016-10-24 10:58:05 -04:00
parent 969e945a9e
commit 81ae13084d
15 changed files with 185 additions and 447 deletions
Download Patch File Download Diff File Expand all files Collapse all files

265
pkg/client/unversioned/helper.go
View File

@@ -17,25 +17,9 @@ limitations under the License.
package unversioned
import (
"fmt"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/apimachinery/registered"
"k8s.io/kubernetes/pkg/apis/apps"
"k8s.io/kubernetes/pkg/apis/authentication"
"k8s.io/kubernetes/pkg/apis/authorization"
"k8s.io/kubernetes/pkg/apis/autoscaling"
"k8s.io/kubernetes/pkg/apis/batch"
"k8s.io/kubernetes/pkg/apis/certificates"
"k8s.io/kubernetes/pkg/apis/extensions"
"k8s.io/kubernetes/pkg/apis/policy"
"k8s.io/kubernetes/pkg/apis/rbac"
"k8s.io/kubernetes/pkg/apis/storage"
"k8s.io/kubernetes/pkg/client/restclient"
"k8s.io/kubernetes/pkg/client/typed/discovery"
"k8s.io/kubernetes/pkg/util/sets"
"k8s.io/kubernetes/pkg/version"
// Import solely to initialize client auth plugins.
_ "k8s.io/kubernetes/plugin/pkg/client/auth"
)
@@ -45,255 +29,6 @@ const (
defaultAPIPath = "/apis"
)
// New creates a Kubernetes client for the given config. This client works with pods,
// replication controllers, daemons, and services. It allows operations such as list, get, update
// and delete on these objects. An error is returned if the provided configuration
// is not valid.
func New(c *restclient.Config) (*Client, error) {
config := *c
if err := SetKubernetesDefaults(&config); err != nil {
return nil, err
}
client, err := restclient.RESTClientFor(&config)
if err != nil {
return nil, err
}
discoveryConfig := *c
discoveryClient, err := discovery.NewDiscoveryClientForConfig(&discoveryConfig)
if err != nil {
return nil, err
}
var authorizationClient *AuthorizationClient
if registered.IsRegistered(authorization.GroupName) {
authorizationConfig := *c
authorizationClient, err = NewAuthorization(&authorizationConfig)
if err != nil {
return nil, err
}
}
var autoscalingClient *AutoscalingClient
if registered.IsRegistered(autoscaling.GroupName) {
autoscalingConfig := *c
autoscalingClient, err = NewAutoscaling(&autoscalingConfig)
if err != nil {
return nil, err
}
}
var authenticationClient *AuthenticationClient
if registered.IsRegistered(authentication.GroupName) {
authenticationConfig := *c
authenticationClient, err = NewAuthentication(&authenticationConfig)
if err != nil {
return nil, err
}
}
var batchClient *BatchClient
if registered.IsRegistered(batch.GroupName) {
batchConfig := *c
batchClient, err = NewBatch(&batchConfig)
if err != nil {
return nil, err
}
}
var extensionsClient *ExtensionsClient
if registered.IsRegistered(extensions.GroupName) {
extensionsConfig := *c
extensionsClient, err = NewExtensions(&extensionsConfig)
if err != nil {
return nil, err
}
}
var policyClient *PolicyClient
if registered.IsRegistered(policy.GroupName) {
policyConfig := *c
policyClient, err = NewPolicy(&policyConfig)
if err != nil {
return nil, err
}
}
var certsClient *CertificatesClient
if registered.IsRegistered(certificates.GroupName) {
certsConfig := *c
certsClient, err = NewCertificates(&certsConfig)
if err != nil {
return nil, err
}
}
var appsClient *AppsClient
if registered.IsRegistered(apps.GroupName) {
appsConfig := *c
appsClient, err = NewApps(&appsConfig)
if err != nil {
return nil, err
}
}
var rbacClient *RbacClient
if registered.IsRegistered(rbac.GroupName) {
rbacConfig := *c
rbacClient, err = NewRbac(&rbacConfig)
if err != nil {
return nil, err
}
}
var storageClient *StorageClient
if registered.IsRegistered(storage.GroupName) {
storageConfig := *c
storageClient, err = NewStorage(&storageConfig)
if err != nil {
return nil, err
}
}
return &Client{
RESTClient: client,
AppsClient: appsClient,
AuthenticationClient: authenticationClient,
AuthorizationClient: authorizationClient,
AutoscalingClient: autoscalingClient,
BatchClient: batchClient,
CertificatesClient: certsClient,
DiscoveryClient: discoveryClient,
ExtensionsClient: extensionsClient,
PolicyClient: policyClient,
RbacClient: rbacClient,
StorageClient: storageClient,
}, nil
}
// MatchesServerVersion queries the server to compares the build version
// (git hash) of the client with the server's build version. It returns an error
// if it failed to contact the server or if the versions are not an exact match.
func MatchesServerVersion(client *Client, c *restclient.Config) error {
var err error
if client == nil {
client, err = New(c)
if err != nil {
return err
}
}
cVer := version.Get()
sVer, err := client.Discovery().ServerVersion()
if err != nil {
return fmt.Errorf("couldn't read version from server: %v\n", err)
}
// GitVersion includes GitCommit and GitTreeState, but best to be safe?
if cVer.GitVersion != sVer.GitVersion || cVer.GitCommit != sVer.GitCommit || cVer.GitTreeState != sVer.GitTreeState {
return fmt.Errorf("server version (%#v) differs from client version (%#v)!\n", sVer, cVer)
}
return nil
}
// NegotiateVersion queries the server's supported api versions to find
// a version that both client and server support.
// - If no version is provided, try registered client versions in order of
// preference.
// - If version is provided, but not default config (explicitly requested via
// commandline flag), and is unsupported by the server, print a warning to
// stderr and try client's registered versions in order of preference.
// - If version is config default, and the server does not support it,
// return an error.
func NegotiateVersion(client *Client, c *restclient.Config, requestedGV *unversioned.GroupVersion, clientRegisteredGVs []unversioned.GroupVersion) (*unversioned.GroupVersion, error) {
var err error
if client == nil {
client, err = New(c)
if err != nil {
return nil, err
}
}
clientVersions := sets.String{}
for _, gv := range clientRegisteredGVs {
clientVersions.Insert(gv.String())
}
groups, err := client.ServerGroups()
if err != nil {
// This is almost always a connection error, and higher level code should treat this as a generic error,
// not a negotiation specific error.
return nil, err
}
versions := unversioned.ExtractGroupVersions(groups)
serverVersions := sets.String{}
for _, v := range versions {
serverVersions.Insert(v)
}
// If no version requested, use config version (may also be empty).
// make a copy of the original so we don't risk mutating input here or in the returned value
var preferredGV *unversioned.GroupVersion
switch {
case requestedGV != nil:
t := *requestedGV
preferredGV = &t
case c.GroupVersion != nil:
t := *c.GroupVersion
preferredGV = &t
}
// If version explicitly requested verify that both client and server support it.
// If server does not support warn, but try to negotiate a lower version.
if preferredGV != nil {
if !clientVersions.Has(preferredGV.String()) {
return nil, fmt.Errorf("client does not support API version %q; client supported API versions: %v", preferredGV, clientVersions)
}
// If the server supports no versions, then we should just use the preferredGV
// This can happen because discovery fails due to 403 Forbidden errors
if len(serverVersions) == 0 {
return preferredGV, nil
}
if serverVersions.Has(preferredGV.String()) {
return preferredGV, nil
}
// If we are using an explicit config version the server does not support, fail.
if (c.GroupVersion != nil) && (*preferredGV == *c.GroupVersion) {
return nil, fmt.Errorf("server does not support API version %q", preferredGV)
}
}
for _, clientGV := range clientRegisteredGVs {
if serverVersions.Has(clientGV.String()) {
// Version was not explicitly requested in command config (--api-version).
// Ok to fall back to a supported version with a warning.
// TODO: caesarxuchao: enable the warning message when we have
// proper fix. Please refer to issue #14895.
// if len(version) != 0 {
// glog.Warningf("Server does not support API version '%s'. Falling back to '%s'.", version, clientVersion)
// }
t := clientGV
return &t, nil
}
}
return nil, fmt.Errorf("failed to negotiate an api version; server supports: %v, client supports: %v",
serverVersions, clientVersions)
}
// NewOrDie creates a Kubernetes client and panics if the provided API version is not recognized.
func NewOrDie(c *restclient.Config) *Client {
client, err := New(c)
if err != nil {
panic(err)
}
return client
}
// NewInCluster is a shortcut for calling InClusterConfig() and then New().
func NewInCluster() (*Client, error) {
cc, err := restclient.InClusterConfig()
if err != nil {
return nil, err
}
return New(cc)
}
// SetKubernetesDefaults sets default values on the provided client config for accessing the
// Kubernetes API or returns an error if any of the defaults are impossible or invalid.
// TODO: this method needs to be split into one that sets defaults per group, expected to be fix in PR "Refactoring clientcache.go and helper.go #14592"