mirror of
https://github.com/ceph/ceph-csi.git
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88 lines
2.2 KiB
Go
88 lines
2.2 KiB
Go
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/*
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Copyright 2023 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 cel
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import (
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"fmt"
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"math"
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"net/netip"
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"reflect"
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"github.com/google/cel-go/cel"
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"github.com/google/cel-go/common/types"
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"github.com/google/cel-go/common/types/ref"
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)
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// CIDR provides a CEL representation of an network address.
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type CIDR struct {
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netip.Prefix
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}
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var (
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CIDRType = cel.OpaqueType("net.CIDR")
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)
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// ConvertToNative implements ref.Val.ConvertToNative.
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func (d CIDR) ConvertToNative(typeDesc reflect.Type) (any, error) {
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if reflect.TypeOf(d.Prefix).AssignableTo(typeDesc) {
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return d.Prefix, nil
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}
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if reflect.TypeOf("").AssignableTo(typeDesc) {
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return d.Prefix.String(), nil
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}
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return nil, fmt.Errorf("type conversion error from 'CIDR' to '%v'", typeDesc)
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}
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// ConvertToType implements ref.Val.ConvertToType.
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func (d CIDR) ConvertToType(typeVal ref.Type) ref.Val {
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switch typeVal {
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case CIDRType:
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return d
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case types.TypeType:
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return CIDRType
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case types.StringType:
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return types.String(d.Prefix.String())
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}
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return types.NewErr("type conversion error from '%s' to '%s'", CIDRType, typeVal)
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}
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// Equal implements ref.Val.Equal.
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func (d CIDR) Equal(other ref.Val) ref.Val {
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otherD, ok := other.(CIDR)
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if !ok {
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return types.ValOrErr(other, "no such overload")
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}
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return types.Bool(d.Prefix == otherD.Prefix)
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}
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// Type implements ref.Val.Type.
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func (d CIDR) Type() ref.Type {
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return CIDRType
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}
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// Value implements ref.Val.Value.
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func (d CIDR) Value() any {
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return d.Prefix
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}
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// Size returns the size of the CIDR prefix address in bytes.
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// Used in the size estimation of the runtime cost.
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func (d CIDR) Size() ref.Val {
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return types.Int(int(math.Ceil(float64(d.Prefix.Bits()) / 8)))
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}
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