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Merge pull request #129 from erikgb/conversion-gen
chore: introduce conversion-gen to generate conversion functions
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| package v1 | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "strconv" | ||
|
|
||
| accuratev2alpha1 "github.com/cybozu-go/accurate/api/accurate/v2alpha1" | ||
| "github.com/cybozu-go/accurate/pkg/constants" | ||
| "k8s.io/apimachinery/pkg/api/meta" | ||
| "k8s.io/apimachinery/pkg/conversion" | ||
| kstatus "sigs.k8s.io/cli-utils/pkg/kstatus/status" | ||
| ) | ||
|
|
||
| // Convert_v1_SubNamespace_To_v2alpha1_SubNamespace complements the generated conversion functions since status needs special handling | ||
| func Convert_v1_SubNamespace_To_v2alpha1_SubNamespace(in *SubNamespace, out *accuratev2alpha1.SubNamespace, s conversion.Scope) error { | ||
| if err := autoConvert_v1_SubNamespace_To_v2alpha1_SubNamespace(in, out, s); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| // Restore info from annotations to ensure conversions are lossy-less. | ||
| // Delete annotation after processing it to avoid polluting converted resource. | ||
| if v, ok := out.Annotations[constants.AnnObservedGeneration]; ok { | ||
| obsGen, err := strconv.ParseInt(v, 10, 64) | ||
| if err != nil { | ||
| return fmt.Errorf("error converting %q to int64 from annotation %s", v, constants.AnnObservedGeneration) | ||
| } | ||
| out.Status.ObservedGeneration = obsGen | ||
|
|
||
| delete(out.Annotations, constants.AnnObservedGeneration) | ||
| } | ||
| if conds, ok := out.Annotations[constants.AnnConditions]; ok { | ||
| err := json.Unmarshal([]byte(conds), &out.Status.Conditions) | ||
| if err != nil { | ||
| return fmt.Errorf("error unmarshalling JSON from annotation %s", constants.AnnConditions) | ||
| } | ||
|
|
||
| delete(out.Annotations, constants.AnnConditions) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // Convert_v2alpha1_SubNamespace_To_v1_SubNamespace complements the generated conversion functions since status needs special handling | ||
| func Convert_v2alpha1_SubNamespace_To_v1_SubNamespace(in *accuratev2alpha1.SubNamespace, out *SubNamespace, s conversion.Scope) error { | ||
| if err := autoConvert_v2alpha1_SubNamespace_To_v1_SubNamespace(in, out, s); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| switch { | ||
| case meta.IsStatusConditionTrue(in.Status.Conditions, string(kstatus.ConditionStalled)): | ||
| out.Status = SubNamespaceConflict | ||
| case in.Status.ObservedGeneration == 0: | ||
| // SubNamespace has never been reconciled. | ||
| case in.Status.ObservedGeneration == in.Generation && len(in.Status.Conditions) == 0: | ||
| out.Status = SubNamespaceOK | ||
| default: | ||
| // SubNamespace is in some transitional state, not possible to represent in v1 status. | ||
| // An unset value is probably our best option. | ||
| } | ||
|
|
||
| // Store info in annotations to ensure conversions are lossy-less. | ||
| if out.Annotations == nil { | ||
| out.Annotations = make(map[string]string) | ||
| } | ||
| if in.Status.ObservedGeneration != 0 { | ||
| out.Annotations[constants.AnnObservedGeneration] = strconv.FormatInt(in.Status.ObservedGeneration, 10) | ||
| } | ||
| if len(in.Status.Conditions) > 0 { | ||
| buf, err := json.Marshal(in.Status.Conditions) | ||
| if err != nil { | ||
| return fmt.Errorf("error marshalling conditions to JSON") | ||
| } | ||
| out.Annotations[constants.AnnConditions] = string(buf) | ||
| } | ||
| if len(out.Annotations) == 0 { | ||
| out.Annotations = nil | ||
| } | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,4 @@ | ||
| // +kubebuilder:object:generate=true | ||
| // +groupName=accurate.cybozu.com | ||
| // +k8s:conversion-gen=github.com/cybozu-go/accurate/api/accurate/v2alpha1 | ||
| package v1 |
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