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✨ Add JSON schema for Vald Helm Chart
Signed-off-by: Rintaro Okamura <rintaro.okamura@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,197 @@ | ||
| // | ||
| // Copyright (C) 2019-2020 Vdaas.org Vald team ( kpango, rinx, kmrmt ) | ||
| // | ||
| // 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 | ||
| // | ||
| // https://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 main | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "encoding/json" | ||
| "fmt" | ||
| "os" | ||
| "strings" | ||
|
|
||
| "github.com/vdaas/vald/internal/errors" | ||
| "github.com/vdaas/vald/internal/log" | ||
| ) | ||
|
|
||
| const ( | ||
| objectType = "object" | ||
| arrayType = "array" | ||
| stringType = "string" | ||
| intType = "integer" | ||
| boolType = "boolean" | ||
|
|
||
| prefix = "# json-schema: " | ||
| ) | ||
|
|
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| type VSchema struct { | ||
| Name string `json:"name"` | ||
| Type string `json:"type"` | ||
| Pattern string `json:"pattern,omitempty"` | ||
| } | ||
|
|
||
| type Root struct { | ||
| SchemaKeyword string `json:"$schema"` | ||
| Title string `json:"title"` | ||
| Schema | ||
| } | ||
|
|
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| type Schema struct { | ||
| Type string `json:"type"` | ||
| Description string `json:"description,omitempty"` | ||
| Pattern string `json:"pattern,omitempty"` | ||
| Items *Schema `json:"items,omitempty"` | ||
| Required []string `json:"required,omitempty"` | ||
| Properties map[string]*Schema `json:"properties,omitempty"` | ||
| } | ||
|
|
||
| func main() { | ||
| if len(os.Args) < 2 { | ||
| log.Fatal(errors.New("invalid argument: must be specify path to the values.yaml")) | ||
| } | ||
| err := genJSONSchema(os.Args[1]) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| } | ||
|
|
||
| func genJSONSchema(path string) error { | ||
| f, err := os.Open(path) | ||
| if err != nil { | ||
| return errors.Errorf("cannot open %s", path) | ||
| } | ||
| defer func() { | ||
| err := f.Close() | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| }() | ||
|
|
||
| ls := make([]VSchema, 0) | ||
| sc := bufio.NewScanner(f) | ||
| for sc.Scan() { | ||
| tx := strings.TrimLeft(sc.Text(), " ") | ||
| if strings.HasPrefix(tx, prefix) { | ||
| var l VSchema | ||
| err = json.Unmarshal([]byte(strings.TrimPrefix(tx, prefix)), &l) | ||
| if err != nil { | ||
| log.Error(err) | ||
| } | ||
| ls = append(ls, l) | ||
| } | ||
| } | ||
|
|
||
| schemas, err := objectProperties(ls) | ||
| if err != nil { | ||
| return errors.Errorf("error: %s", err) | ||
| } | ||
|
|
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| json, err := json.Marshal(newRoot(schemas)) | ||
| // json, err := json.Marshal(ls) | ||
| if err != nil { | ||
| return errors.Errorf("error: %s", err) | ||
| } | ||
|
|
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| fmt.Println(string(json)) | ||
|
|
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| return nil | ||
| } | ||
|
|
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| func objectProperties(ls []VSchema) (map[string]*Schema, error) { | ||
| if len(ls) <= 0 { | ||
| return nil, errors.New("empty list") | ||
| } | ||
|
|
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| groups := make(map[string][]VSchema) | ||
| for _, l := range ls { | ||
| root := strings.Split(l.Name, ".") | ||
| groups[root[0]] = append(groups[root[0]], l) | ||
| } | ||
|
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| schemas := make(map[string]*Schema) | ||
| for k, v := range groups { | ||
| s, err := genNode(v) | ||
| if err != nil { | ||
| return nil, errors.Errorf("error: %s", err) | ||
| } | ||
| schemas[k] = s | ||
| } | ||
|
|
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| return schemas, nil | ||
| } | ||
|
|
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| func genNode(ls []VSchema) (*Schema, error) { | ||
| if len(ls) <= 0 { | ||
| return nil, errors.New("empty list") | ||
| } | ||
|
|
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| l := ls[0] | ||
| switch l.Type { | ||
| case objectType: | ||
| if len(ls) <= 1 { | ||
| return &Schema{ | ||
| Type: objectType, | ||
| }, nil | ||
| } | ||
|
|
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| nls := make([]VSchema, 0, len(ls[1:])) | ||
| for _, nl := range ls[1:] { | ||
| nl.Name = strings.TrimLeft(strings.TrimPrefix(nl.Name, l.Name), ".") | ||
| nls = append(nls, nl) | ||
| } | ||
|
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| ps, err := objectProperties(nls) | ||
| if err != nil { | ||
| return nil, errors.Errorf("error: %s", err) | ||
| } | ||
| return &Schema{ | ||
| Type: objectType, | ||
| Properties: ps, | ||
| }, nil | ||
| case arrayType: | ||
| return &Schema{ | ||
| Type: arrayType, | ||
| }, nil | ||
| case stringType: | ||
| return &Schema{ | ||
| Type: stringType, | ||
| Pattern: l.Pattern, | ||
| }, nil | ||
| case intType: | ||
| return &Schema{ | ||
| Type: intType, | ||
| }, nil | ||
| case boolType: | ||
| return &Schema{ | ||
| Type: boolType, | ||
| }, nil | ||
| default: | ||
| return &Schema{ | ||
| Type: l.Type, | ||
| }, nil | ||
| } | ||
| } | ||
|
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| func newRoot(schemas map[string]*Schema) *Root { | ||
| return &Root{ | ||
| SchemaKeyword: "http://json-schema.org/draft-07/schema#", | ||
| Title: "Values", | ||
| Schema: Schema{ | ||
| Type: objectType, | ||
| Properties: schemas, | ||
| }, | ||
| } | ||
| } |