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126 lines
3.4 KiB
Go
126 lines
3.4 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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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 kubectl
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import (
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"fmt"
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"strings"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/kubernetes/pkg/api"
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)
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// ResourceQuotaGeneratorV1 supports stable generation of a resource quota
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type ResourceQuotaGeneratorV1 struct {
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// The name of a quota object.
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Name string
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// The hard resource limit string before parsing.
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Hard string
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// The scopes of a quota object before parsing.
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Scopes string
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}
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// ParamNames returns the set of supported input parameters when using the parameter injection generator pattern
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func (g ResourceQuotaGeneratorV1) ParamNames() []GeneratorParam {
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return []GeneratorParam{
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{"name", true},
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{"hard", true},
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{"scopes", false},
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}
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}
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// Ensure it supports the generator pattern that uses parameter injection
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var _ Generator = &ResourceQuotaGeneratorV1{}
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// Ensure it supports the generator pattern that uses parameters specified during construction
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var _ StructuredGenerator = &ResourceQuotaGeneratorV1{}
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func (g ResourceQuotaGeneratorV1) Generate(genericParams map[string]interface{}) (runtime.Object, error) {
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err := ValidateParams(g.ParamNames(), genericParams)
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if err != nil {
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return nil, err
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}
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params := map[string]string{}
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for key, value := range genericParams {
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strVal, isString := value.(string)
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if !isString {
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return nil, fmt.Errorf("expected string, saw %v for '%s'", value, key)
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}
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params[key] = strVal
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}
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delegate := &ResourceQuotaGeneratorV1{}
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delegate.Name = params["name"]
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delegate.Hard = params["hard"]
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delegate.Scopes = params["scopes"]
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return delegate.StructuredGenerate()
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}
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// StructuredGenerate outputs a ResourceQuota object using the configured fields
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func (g *ResourceQuotaGeneratorV1) StructuredGenerate() (runtime.Object, error) {
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if err := g.validate(); err != nil {
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return nil, err
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}
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resourceList, err := populateResourceList(g.Hard)
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if err != nil {
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return nil, err
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}
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scopes, err := parseScopes(g.Scopes)
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if err != nil {
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return nil, err
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}
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resourceQuota := &api.ResourceQuota{}
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resourceQuota.Name = g.Name
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resourceQuota.Spec.Hard = resourceList
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resourceQuota.Spec.Scopes = scopes
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return resourceQuota, nil
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}
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// validate validates required fields are set to support structured generation
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func (r *ResourceQuotaGeneratorV1) validate() error {
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if len(r.Name) == 0 {
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return fmt.Errorf("name must be specified")
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}
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return nil
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}
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func parseScopes(spec string) ([]api.ResourceQuotaScope, error) {
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// empty input gets a nil response to preserve generator test expected behaviors
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if spec == "" {
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return nil, nil
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}
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scopes := strings.Split(spec, ",")
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result := make([]api.ResourceQuotaScope, 0, len(scopes))
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for _, scope := range scopes {
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// intentionally do not verify the scope against the valid scope list. This is done by the apiserver anyway.
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if scope == "" {
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return nil, fmt.Errorf("invalid resource quota scope \"\"")
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}
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result = append(result, api.ResourceQuotaScope(scope))
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}
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return result, nil
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}
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