jx/internal/schema/schema.go

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2024-09-19 08:14:47 +00:00
// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.
package schema
import (
"errors"
"fmt"
"github.com/xeipuuv/gojsonschema"
"strings"
"embed"
"net/http"
"log/slog"
"io/fs"
)
//go:embed schemas/*.schema.json
var schemaFiles embed.FS
type Schema struct {
schema gojsonschema.JSONLoader
}
func New(name string, fs fs.FS) *Schema {
path := fmt.Sprintf("file://schemas/%s.schema.json", name)
return &Schema{schema: gojsonschema.NewReferenceLoaderFileSystem(path, http.FS(fs))}
//return &Schema{schema: gojsonschema.NewReferenceLoader(path)}
}
func (s *Schema) Validate(source string) error {
// loader := gojsonschema.NewGoLoader(source)
loader := gojsonschema.NewStringLoader(source)
result, err := gojsonschema.Validate(s.schema, loader)
if err != nil {
slog.Info("schema error", "source", source, "schema", s.schema, "result", result, "err", err)
return err
}
slog.Info("schema.Validate()", "schema", s.schema, "result", result, "err", err)
if !result.Valid() {
schemaErrors := strings.Builder{}
for _, err := range result.Errors() {
schemaErrors.WriteString(err.String() + "\n")
}
schemaErrors.WriteString(source)
return errors.New(schemaErrors.String())
}
return nil
}
func (s *Schema) ValidateSchema() error {
sl := gojsonschema.NewSchemaLoader()
sl.Validate = true
schemaErr := sl.AddSchemas(s.schema)
slog.Info("validate schema definition", "schemaloader", sl, "err", schemaErr)
return schemaErr
}