kubernetes registry 源码
kubernetes registry 代码
文件路径：/staging/src/k8s.io/apiextensions-apiserver/third_party/forked/celopenapi/model/registry.go
// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package model
import (
"sync"
"github.com/google/cel-go/cel"
"k8s.io/apiextensions-apiserver/pkg/apiserver/schema"
)
// Resolver declares methods to find policy templates and related configuration objects.
type Resolver interface {
// FindType returns a DeclType instance corresponding to the given fully-qualified name, if
// present.
FindType(name string) (*DeclType, bool)
}
// NewRegistry create a registry for keeping track of environments, schemas, templates, and more
// from a base cel.Env expression environment.
func NewRegistry(stdExprEnv *cel.Env) *Registry {
return &Registry{
exprEnvs: map[string]*cel.Env{"": stdExprEnv},
schemas: map[string]*schema.Structural{},
types: map[string]*DeclType{
BoolType.TypeName(): BoolType,
BytesType.TypeName(): BytesType,
DoubleType.TypeName(): DoubleType,
DurationType.TypeName(): DurationType,
IntType.TypeName(): IntType,
NullType.TypeName(): NullType,
StringType.TypeName(): StringType,
TimestampType.TypeName(): TimestampType,
UintType.TypeName(): UintType,
ListType.TypeName(): ListType,
MapType.TypeName(): MapType,
},
}
}
// Registry defines a repository of environment, schema, template, and type definitions.
//
// Registry instances are concurrency-safe.
type Registry struct {
rwMux sync.RWMutex
exprEnvs map[string]*cel.Env
schemas map[string]*schema.Structural
types map[string]*DeclType
}
// FindType implements the Resolver interface method.
func (r *Registry) FindType(name string) (*DeclType, bool) {
r.rwMux.RLock()
defer r.rwMux.RUnlock()
typ, found := r.types[name]
if found {
return typ, true
}
return typ, found
}
// SetType registers a DeclType descriptor by its fully qualified name.
func (r *Registry) SetType(name string, declType *DeclType) error {
r.rwMux.Lock()
defer r.rwMux.Unlock()
r.types[name] = declType
return nil
}
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