mirror of
https://github.com/ceph/ceph-csi.git
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84 lines
2.1 KiB
Go
84 lines
2.1 KiB
Go
/*
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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 library
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import (
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"math"
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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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// Test provides a test() function that returns true.
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func Test(options ...TestOption) cel.EnvOption {
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t := &testLib{version: math.MaxUint32}
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for _, o := range options {
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t = o(t)
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}
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return cel.Lib(t)
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}
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type testLib struct {
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version uint32
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}
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func (*testLib) LibraryName() string {
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return "k8s.test"
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}
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type TestOption func(*testLib) *testLib
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func TestVersion(version uint32) func(lib *testLib) *testLib {
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return func(sl *testLib) *testLib {
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sl.version = version
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return sl
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}
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}
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func (t *testLib) CompileOptions() []cel.EnvOption {
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var options []cel.EnvOption
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if t.version == 0 {
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options = append(options, cel.Function("test",
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cel.Overload("test", []*cel.Type{}, cel.BoolType,
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cel.FunctionBinding(func(args ...ref.Val) ref.Val {
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return types.True
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}))))
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}
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if t.version >= 1 {
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options = append(options, cel.Function("test",
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cel.Overload("test", []*cel.Type{}, cel.BoolType,
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cel.FunctionBinding(func(args ...ref.Val) ref.Val {
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// Return false here so tests can observe which version of the function is registered
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// Actual function libraries must not break backward compatibility
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return types.False
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}))))
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options = append(options, cel.Function("testV1",
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cel.Overload("testV1", []*cel.Type{}, cel.BoolType,
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cel.FunctionBinding(func(args ...ref.Val) ref.Val {
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return types.True
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}))))
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}
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return options
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}
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func (*testLib) ProgramOptions() []cel.ProgramOption {
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return []cel.ProgramOption{}
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}
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