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c3ca308489
* Chore: update cue version to 0.4.3 Signed-off-by: FogDong <dongtianxin.tx@alibaba-inc.com> * resolve some comments Signed-off-by: FogDong <dongtianxin.tx@alibaba-inc.com> * fix lint Signed-off-by: FogDong <dongtianxin.tx@alibaba-inc.com> * add more tests Signed-off-by: FogDong <dongtianxin.tx@alibaba-inc.com> * rebase and add more tests Signed-off-by: FogDong <dongtianxin.tx@alibaba-inc.com> * resolve comments Signed-off-by: FogDong <dongtianxin.tx@alibaba-inc.com>
107 lines
2.7 KiB
Go
107 lines
2.7 KiB
Go
/*
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Copyright 2021 The KubeVela 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 model
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import (
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"cuelang.org/go/cue"
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"github.com/pkg/errors"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/klog/v2"
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"github.com/oam-dev/kubevela/pkg/cue/model/sets"
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)
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// Instance defines Model Interface
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type Instance interface {
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String() (string, error)
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Value() cue.Value
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Unstructured() (*unstructured.Unstructured, error)
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IsBase() bool
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Unify(other cue.Value, options ...sets.UnifyOption) error
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Compile() ([]byte, error)
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}
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type instance struct {
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v cue.Value
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base bool
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}
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// String return instance's cue format string
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func (inst *instance) String() (string, error) {
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return sets.ToString(inst.v)
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}
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func (inst *instance) Value() cue.Value {
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return inst.v
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}
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// IsBase indicate whether the instance is base model
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func (inst *instance) IsBase() bool {
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return inst.base
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}
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func (inst *instance) Compile() ([]byte, error) {
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if err := inst.v.Err(); err != nil {
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return nil, err
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}
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// compiled object should be final and concrete value
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if err := inst.v.Validate(cue.Concrete(true), cue.Final()); err != nil {
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return nil, err
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}
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return inst.v.MarshalJSON()
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}
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// Unstructured convert cue values to unstructured.Unstructured
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// TODO(wonderflow): will it be better if we try to decode it to concrete object(such as K8s Deployment) by using runtime.Schema?
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func (inst *instance) Unstructured() (*unstructured.Unstructured, error) {
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jsonv, err := inst.Compile()
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if err != nil {
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klog.ErrorS(err, "failed to have the workload/trait unstructured", "Definition", inst.v)
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return nil, errors.Wrap(err, "failed to have the workload/trait unstructured")
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}
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o := &unstructured.Unstructured{}
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if err := o.UnmarshalJSON(jsonv); err != nil {
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return nil, err
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}
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return o, nil
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}
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// Unify implement unity operations between instances
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func (inst *instance) Unify(other cue.Value, options ...sets.UnifyOption) error {
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pv, err := sets.StrategyUnify(inst.v, other, options...)
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if err != nil {
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return err
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}
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inst.v = pv
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return nil
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}
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// NewBase create a base instance
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func NewBase(v cue.Value) (Instance, error) {
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return &instance{
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v: v,
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base: true,
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}, nil
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}
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// NewOther create a non-base instance
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func NewOther(v cue.Value) (Instance, error) {
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return &instance{
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v: v,
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}, nil
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}
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