mirror of
https://github.com/ceph/ceph-csi.git
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1b23d78113
Updated kubernetes packages to latest release. resizefs package has been included into k8s.io/mount-utils package. updated code to use the same. Updates: #1968 Signed-off-by: Rakshith R <rar@redhat.com>
152 lines
4.6 KiB
Go
152 lines
4.6 KiB
Go
/*
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Copyright 2018 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 typed
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import (
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"fmt"
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yaml "gopkg.in/yaml.v2"
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"sigs.k8s.io/structured-merge-diff/v4/schema"
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"sigs.k8s.io/structured-merge-diff/v4/value"
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)
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// YAMLObject is an object encoded in YAML.
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type YAMLObject string
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// Parser implements YAMLParser and allows introspecting the schema.
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type Parser struct {
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Schema schema.Schema
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}
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// create builds an unvalidated parser.
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func create(s YAMLObject) (*Parser, error) {
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p := Parser{}
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err := yaml.Unmarshal([]byte(s), &p.Schema)
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return &p, err
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}
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func createOrDie(schema YAMLObject) *Parser {
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p, err := create(schema)
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if err != nil {
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panic(fmt.Errorf("failed to create parser: %v", err))
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}
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return p
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}
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var ssParser = createOrDie(YAMLObject(schema.SchemaSchemaYAML))
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// NewParser will build a YAMLParser from a schema. The schema is validated.
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func NewParser(schema YAMLObject) (*Parser, error) {
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_, err := ssParser.Type("schema").FromYAML(schema)
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if err != nil {
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return nil, fmt.Errorf("unable to validate schema: %v", err)
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}
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p, err := create(schema)
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if err != nil {
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return nil, err
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}
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return p, nil
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}
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// TypeNames returns a list of types this parser understands.
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func (p *Parser) TypeNames() (names []string) {
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for _, td := range p.Schema.Types {
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names = append(names, td.Name)
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}
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return names
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}
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// Type returns a helper which can produce objects of the given type. Any
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// errors are deferred until a further function is called.
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func (p *Parser) Type(name string) ParseableType {
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return ParseableType{
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Schema: &p.Schema,
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TypeRef: schema.TypeRef{NamedType: &name},
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}
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}
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// ParseableType allows for easy production of typed objects.
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type ParseableType struct {
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TypeRef schema.TypeRef
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Schema *schema.Schema
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}
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// IsValid return true if p's schema and typename are valid.
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func (p ParseableType) IsValid() bool {
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_, ok := p.Schema.Resolve(p.TypeRef)
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return ok
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}
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// FromYAML parses a yaml string into an object with the current schema
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// and the type "typename" or an error if validation fails.
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func (p ParseableType) FromYAML(object YAMLObject) (*TypedValue, error) {
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var v interface{}
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err := yaml.Unmarshal([]byte(object), &v)
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if err != nil {
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return nil, err
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}
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return AsTyped(value.NewValueInterface(v), p.Schema, p.TypeRef)
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}
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// FromUnstructured converts a go "interface{}" type, typically an
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// unstructured object in Kubernetes world, to a TypedValue. It returns an
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// error if the resulting object fails schema validation.
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// The provided interface{} must be one of: map[string]interface{},
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// map[interface{}]interface{}, []interface{}, int types, float types,
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// string or boolean. Nested interface{} must also be one of these types.
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func (p ParseableType) FromUnstructured(in interface{}) (*TypedValue, error) {
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return AsTyped(value.NewValueInterface(in), p.Schema, p.TypeRef)
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}
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// FromStructured converts a go "interface{}" type, typically an structured object in
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// Kubernetes, to a TypedValue. It will return an error if the resulting object fails
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// schema validation. The provided "interface{}" value must be a pointer so that the
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// value can be modified via reflection. The provided "interface{}" may contain structs
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// and types that are converted to Values by the jsonMarshaler interface.
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func (p ParseableType) FromStructured(in interface{}) (*TypedValue, error) {
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v, err := value.NewValueReflect(in)
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if err != nil {
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return nil, fmt.Errorf("error creating struct value reflector: %v", err)
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}
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return AsTyped(v, p.Schema, p.TypeRef)
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}
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// DeducedParseableType is a ParseableType that deduces the type from
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// the content of the object.
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var DeducedParseableType ParseableType = createOrDie(YAMLObject(`types:
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- name: __untyped_atomic_
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scalar: untyped
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list:
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elementType:
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namedType: __untyped_atomic_
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elementRelationship: atomic
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map:
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elementType:
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namedType: __untyped_atomic_
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elementRelationship: atomic
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- name: __untyped_deduced_
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scalar: untyped
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list:
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elementType:
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namedType: __untyped_atomic_
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elementRelationship: atomic
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map:
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elementType:
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namedType: __untyped_deduced_
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elementRelationship: separable
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`)).Type("__untyped_deduced_")
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