github.com/zntrio/harp/v2@v2.0.9/pkg/template/engine/internal/codec/decoder.go (about)

     1  // Licensed to Elasticsearch B.V. under one or more contributor
     2  // license agreements. See the NOTICE file distributed with
     3  // this work for additional information regarding copyright
     4  // ownership. Elasticsearch B.V. licenses this file to you under
     5  // the Apache License, Version 2.0 (the "License"); you may
     6  // not use this file except in compliance with the License.
     7  // You may obtain a copy of the License at
     8  //
     9  //     http://www.apache.org/licenses/LICENSE-2.0
    10  //
    11  // Unless required by applicable law or agreed to in writing,
    12  // software distributed under the License is distributed on an
    13  // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    14  // KIND, either express or implied.  See the License for the
    15  // specific language governing permissions and limitations
    16  // under the License.
    17  
    18  package codec
    19  
    20  import (
    21  	"encoding/json"
    22  
    23  	"sigs.k8s.io/yaml"
    24  )
    25  
    26  // FromYAML converts a YAML document into a map[string]interface{}.
    27  //
    28  // This is not a general-purpose YAML parser, and will not parse all valid
    29  // YAML documents. Additionally, because its intended use is within templates
    30  // it tolerates errors. It will insert the returned error message string into
    31  // m["Error"] in the returned map.
    32  func FromYAML(str string) map[string]interface{} {
    33  	m := map[string]interface{}{}
    34  
    35  	if err := yaml.Unmarshal([]byte(str), &m); err != nil {
    36  		m["Error"] = err.Error()
    37  	}
    38  	return m
    39  }
    40  
    41  // FromYAMLArray converts a YAML array into a []interface{}.
    42  //
    43  // This is not a general-purpose YAML parser, and will not parse all valid
    44  // YAML documents. Additionally, because its intended use is within templates
    45  // it tolerates errors. It will insert the returned error message string as
    46  // the first and only item in the returned array.
    47  func FromYAMLArray(str string) []interface{} {
    48  	a := []interface{}{}
    49  
    50  	if err := yaml.Unmarshal([]byte(str), &a); err != nil {
    51  		a = []interface{}{err.Error()}
    52  	}
    53  	return a
    54  }
    55  
    56  // FromJSON converts a JSON document into a map[string]interface{}.
    57  //
    58  // This is not a general-purpose JSON parser, and will not parse all valid
    59  // JSON documents. Additionally, because its intended use is within templates
    60  // it tolerates errors. It will insert the returned error message string into
    61  // m["Error"] in the returned map.
    62  func FromJSON(str string) map[string]interface{} {
    63  	m := make(map[string]interface{})
    64  
    65  	if err := json.Unmarshal([]byte(str), &m); err != nil {
    66  		m["Error"] = err.Error()
    67  	}
    68  	return m
    69  }
    70  
    71  // FromJSONArray converts a JSON array into a []interface{}.
    72  //
    73  // This is not a general-purpose JSON parser, and will not parse all valid
    74  // JSON documents. Additionally, because its intended use is within templates
    75  // it tolerates errors. It will insert the returned error message string as
    76  // the first and only item in the returned array.
    77  func FromJSONArray(str string) []interface{} {
    78  	a := []interface{}{}
    79  
    80  	if err := json.Unmarshal([]byte(str), &a); err != nil {
    81  		a = []interface{}{err.Error()}
    82  	}
    83  	return a
    84  }