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validation.go
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validation.go
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package jsonschema
import (
"bytes"
"context"
"encoding/json"
"fmt"
"strings"
"github.com/ory/jsonschema/v3"
"github.com/tidwall/gjson"
"github.com/w6d-io/x/cmdx"
"github.com/w6d-io/x/errorx"
)
type SchemaType int
const (
Config SchemaType = iota
)
type Schema struct {
id string
data string
}
var (
schemas = map[SchemaType]*Schema{}
)
// AddSchema add a schema to the list
func AddSchema(schemaType SchemaType, data string) error {
if _, ok := schemas[schemaType]; !ok {
schemas[schemaType] = &Schema{
id: gjson.Get(data, "$id").Str,
data: data,
}
}
return nil
}
func getSchema(schema SchemaType) (*Schema, error) {
if val, ok := schemas[schema]; ok {
return val, nil
}
return nil, &errorx.Error{Message: fmt.Sprintf("the specified schema type (%d) is not supported", int(schema))}
}
func (st SchemaType) Validate(raw interface{}) error {
var err error
c := jsonschema.NewCompiler()
sc, err := getSchema(st)
if err != nil {
return err
}
cmdx.Must(c.AddResource(sc.id, strings.NewReader(sc.data)), "add schema resource failed")
s, err := c.Compile(context.Background(), sc.id)
if err != nil {
return err
}
out, ok := raw.([]byte)
if !ok {
out, err = json.Marshal(raw)
}
cmdx.Must(err, "marshal data for validation failed")
return s.Validate(bytes.NewReader(out))
}