github.com/enmand/kubernetes@v1.2.0-alpha.0/pkg/apis/experimental/install/install.go (about)

     1  /*
     2  Copyright 2015 The Kubernetes Authors All rights reserved.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  // Package install installs the experimental API group, making it available as
    18  // an option to all of the API encoding/decoding machinery.
    19  package install
    20  
    21  import (
    22  	"fmt"
    23  	"strings"
    24  
    25  	"github.com/golang/glog"
    26  
    27  	"k8s.io/kubernetes/pkg/api"
    28  	"k8s.io/kubernetes/pkg/api/latest"
    29  	"k8s.io/kubernetes/pkg/api/meta"
    30  	"k8s.io/kubernetes/pkg/api/registered"
    31  	apiutil "k8s.io/kubernetes/pkg/api/util"
    32  	_ "k8s.io/kubernetes/pkg/apis/experimental"
    33  	"k8s.io/kubernetes/pkg/apis/experimental/v1alpha1"
    34  	"k8s.io/kubernetes/pkg/runtime"
    35  	"k8s.io/kubernetes/pkg/util/sets"
    36  )
    37  
    38  const importPrefix = "k8s.io/kubernetes/pkg/apis/experimental"
    39  
    40  var accessor = meta.NewAccessor()
    41  
    42  func init() {
    43  	groupMeta, err := latest.RegisterGroup("experimental")
    44  	if err != nil {
    45  		glog.V(4).Infof("%v", err)
    46  		return
    47  	}
    48  	registeredGroupVersions := registered.GroupVersionsForGroup("experimental")
    49  	groupVersion := registeredGroupVersions[0]
    50  	*groupMeta = latest.GroupMeta{
    51  		GroupVersion: groupVersion,
    52  		Group:        apiutil.GetGroup(groupVersion),
    53  		Version:      apiutil.GetVersion(groupVersion),
    54  		Codec:        runtime.CodecFor(api.Scheme, groupVersion),
    55  	}
    56  	var versions []string
    57  	var groupVersions []string
    58  	for i := len(registeredGroupVersions) - 1; i >= 0; i-- {
    59  		versions = append(versions, apiutil.GetVersion(registeredGroupVersions[i]))
    60  		groupVersions = append(groupVersions, registeredGroupVersions[i])
    61  	}
    62  	groupMeta.Versions = versions
    63  	groupMeta.GroupVersions = groupVersions
    64  
    65  	groupMeta.SelfLinker = runtime.SelfLinker(accessor)
    66  
    67  	// the list of kinds that are scoped at the root of the api hierarchy
    68  	// if a kind is not enumerated here, it is assumed to have a namespace scope
    69  	rootScoped := sets.NewString()
    70  
    71  	ignoredKinds := sets.NewString()
    72  
    73  	groupMeta.RESTMapper = api.NewDefaultRESTMapper("experimental", groupVersions, interfacesFor, importPrefix, ignoredKinds, rootScoped)
    74  	api.RegisterRESTMapper(groupMeta.RESTMapper)
    75  	groupMeta.InterfacesFor = interfacesFor
    76  }
    77  
    78  // InterfacesFor returns the default Codec and ResourceVersioner for a given version
    79  // string, or an error if the version is not known.
    80  func interfacesFor(version string) (*meta.VersionInterfaces, error) {
    81  	switch version {
    82  	case "experimental/v1alpha1":
    83  		return &meta.VersionInterfaces{
    84  			Codec:            v1alpha1.Codec,
    85  			ObjectConvertor:  api.Scheme,
    86  			MetadataAccessor: accessor,
    87  		}, nil
    88  	default:
    89  		g, _ := latest.Group("experimental")
    90  		return nil, fmt.Errorf("unsupported storage version: %s (valid: %s)", version, strings.Join(g.Versions, ", "))
    91  	}
    92  }