121 lines
3.7 KiB
Go
121 lines
3.7 KiB
Go
/*
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Copyright 2014 Google Inc. 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 util
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import (
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"fmt"
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"github.com/spf13/cobra"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/meta"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/validation"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
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)
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// ResourceFromArgs expects two arguments with a given type, and extracts the fields necessary
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// to uniquely locate a resource. Displays a UsageError if that contract is not satisfied, or
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// a generic error if any other problems occur.
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// DEPRECATED: Use resource.Builder
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func ResourceFromArgs(cmd *cobra.Command, args []string, mapper meta.RESTMapper, cmdNamespace string) (mapping *meta.RESTMapping, namespace, name string, err error) {
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if len(args) != 2 {
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err = UsageError(cmd, "Must provide resource and name command line params")
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return
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}
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resource := args[0]
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namespace = cmdNamespace
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name = args[1]
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if len(name) == 0 || len(resource) == 0 {
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err = UsageError(cmd, "Must provide resource and name command line params")
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return
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}
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version, kind, err := mapper.VersionAndKindForResource(resource)
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if err != nil {
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return
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}
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mapping, err = mapper.RESTMapping(kind, version)
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return
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}
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// ResourceFromFile retrieves the name and namespace from a valid file. If the file does not
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// resolve to a known type an error is returned. The returned mapping can be used to determine
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// the correct REST endpoint to modify this resource with.
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// DEPRECATED: Use resource.Builder
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func ResourceFromFile(filename string, typer runtime.ObjectTyper, mapper meta.RESTMapper, schema validation.Schema, cmdVersion string) (mapping *meta.RESTMapping, namespace, name string, data []byte, err error) {
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data, err = ReadConfigData(filename)
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if err != nil {
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return
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}
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objVersion, kind, err := typer.DataVersionAndKind(data)
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if err != nil {
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return
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}
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// TODO: allow unversioned objects?
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if len(objVersion) == 0 {
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err = fmt.Errorf("the resource in the provided file has no apiVersion defined")
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}
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err = schema.ValidateBytes(data)
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if err != nil {
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return
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}
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// decode using the version stored with the object (allows codec to vary across versions)
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mapping, err = mapper.RESTMapping(kind, objVersion)
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if err != nil {
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return
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}
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obj, err := mapping.Codec.Decode(data)
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if err != nil {
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return
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}
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meta := mapping.MetadataAccessor
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namespace, err = meta.Namespace(obj)
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if err != nil {
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return
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}
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name, err = meta.Name(obj)
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if err != nil {
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return
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}
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// if the preferred API version differs, get a different mapper
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if cmdVersion != objVersion {
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mapping, err = mapper.RESTMapping(kind, cmdVersion)
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}
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return
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}
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// CompareNamespace returns an error if the namespace the user has provided on the CLI
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// or via the default namespace file does not match the namespace of an input file. This
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// prevents a user from unintentionally updating the wrong namespace.
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// DEPRECATED: Use resource.Builder
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func CompareNamespace(defaultNamespace, namespace string) error {
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if len(namespace) > 0 {
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if defaultNamespace != namespace {
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return fmt.Errorf("the namespace from the provided file %q does not match the namespace %q. You must pass '--namespace=%s' to perform this operation.", namespace, defaultNamespace, namespace)
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}
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}
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return nil
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}
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