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json.go
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/
json.go
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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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 reflectx
import (
"encoding/json"
"reflect"
"github.com/apache/beam/sdks/go/pkg/beam/internal/errors"
)
// UnmarshalJSON decodes a json string as then given type. It is suitable
// for when the type is not statically known.
func UnmarshalJSON(t reflect.Type, str string) (interface{}, error) {
data := reflect.New(t).Interface()
if err := json.Unmarshal([]byte(str), data); err != nil {
return nil, errors.Wrap(err, "failed to decode data")
}
return reflect.ValueOf(data).Elem().Interface(), nil
}