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Merge pull request #57 from yasminvalim/downgrade-v35-to-v34
translate: downgrade translation from v35 to v34
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| // Copyright 2020 Red Hat, Inc. | ||
| // | ||
| // 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 | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // 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 v35tov34 | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "reflect" | ||
|
|
||
| "github.com/coreos/ignition/v2/config/translate" | ||
| "github.com/coreos/ignition/v2/config/v3_4/types" | ||
|
|
||
| old_types "github.com/coreos/ignition/v2/config/v3_5/types" | ||
| "github.com/coreos/ignition/v2/config/validate" | ||
| ) | ||
|
|
||
| // Copy of github.com/coreos/ignition/v2/config/v3_5/translate/translate.go | ||
| // with the types & old_types imports reversed (the referenced file translates | ||
| // from 3.5 -> 3.4 but as a result only touches fields that are understood by | ||
| // the 3.4 spec). | ||
| func translateIgnition(old old_types.Ignition) (ret types.Ignition) { | ||
| // use a new translator so we don't recurse infinitely | ||
| translate.NewTranslator().Translate(&old, &ret) | ||
| ret.Version = types.MaxVersion.String() | ||
| return | ||
| } | ||
| func translateLuks(old old_types.Luks) (ret types.Luks) { | ||
| tr := translate.NewTranslator() | ||
| tr.AddCustomTranslator(translateTang) | ||
| tr.Translate(&old.Clevis, &ret.Clevis) | ||
| tr.Translate(&old.Device, &ret.Device) | ||
| tr.Translate(&old.KeyFile, &ret.KeyFile) | ||
| tr.Translate(&old.Label, &ret.Label) | ||
| tr.Translate(&old.Name, &ret.Name) | ||
| tr.Translate(&old.OpenOptions, &ret.OpenOptions) | ||
| tr.Translate(&old.Options, &ret.Options) | ||
| tr.Translate(&old.Discard, &ret.Discard) | ||
| tr.Translate(&old.UUID, &ret.UUID) | ||
| tr.Translate(&old.WipeVolume, &ret.WipeVolume) | ||
| return | ||
| } | ||
| func translateTang(old old_types.Tang) (ret types.Tang) { | ||
| tr := translate.NewTranslator() | ||
| tr.Translate(&old.Thumbprint, &ret.Thumbprint) | ||
| tr.Translate(&old.URL, &ret.URL) | ||
| return | ||
| } | ||
| func translateConfig(old old_types.Config) (ret types.Config) { | ||
| tr := translate.NewTranslator() | ||
| tr.AddCustomTranslator(translateIgnition) | ||
| tr.AddCustomTranslator(translateLuks) | ||
| tr.Translate(&old, &ret) | ||
| return | ||
| } | ||
|
|
||
| // end copied Ignition v3_5/translate block | ||
|
|
||
| // Translate translates Ignition spec config v3.5 to spec v3.4 | ||
| func Translate(cfg old_types.Config) (types.Config, error) { | ||
| rpt := validate.ValidateWithContext(cfg, nil) | ||
| if rpt.IsFatal() { | ||
| return types.Config{}, fmt.Errorf("invalid input config:\n%s", rpt.String()) | ||
| } | ||
|
|
||
| err := checkValue(reflect.ValueOf(cfg)) | ||
| if err != nil { | ||
| return types.Config{}, err | ||
| } | ||
|
|
||
| res := translateConfig(cfg) | ||
|
|
||
| // Sanity check the returned config | ||
| oldrpt := validate.ValidateWithContext(res, nil) | ||
| if oldrpt.IsFatal() { | ||
| return types.Config{}, fmt.Errorf("converted spec has unexpected fatal error:\n%s", oldrpt.String()) | ||
| } | ||
| return res, nil | ||
| } | ||
|
|
||
| func checkValue(v reflect.Value) error { | ||
| // v3.5 introduced Cex type | ||
| if v.Type() == reflect.TypeOf(old_types.Cex{}) { | ||
| return fmt.Errorf("invalid input config: 'Cex' type is not supported in spec v3.4") | ||
| } | ||
|
|
||
| return nil | ||
| } |
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