openecomp-ui/src/nfvo-utils/json/JSONSchema.js

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 // import Ajv from 'ajv';
  22 import cloneDeep from 'lodash/cloneDeep.js';
  23 import JSONPointer from './JSONPointer.js';
  24
  25 export default class JSONSchema {
  26
  27         setSchema(schema) {
  28                 this._schema = schema;
  29                 this._fragmentsCache = new Map();
  30                 // this._ajv = new Ajv({
  31                 //      useDefaults: true,
  32                 //      coerceTypes: true
  33                 // });
  34                 // this._validate = this._ajv.compile(schema);
  35         }
  36
  37         processData(data) {
  38                 data = cloneDeep(data);
  39                 // this._validate(data);
  40                 return data;
  41         }
  42
  43         getTitle(pointer) {
  44                 return this._getSchemaFragment(pointer).title;
  45         }
  46
  47         exists(pointer) {
  48                 const fragment = this._getSchemaFragment(pointer);
  49                 return !!fragment;
  50         }
  51
  52         getDefault(pointer) {
  53                 const fragment = this._getSchemaFragment(pointer);
  54                 return fragment && fragment.default;
  55         }
  56
  57         getEnum(pointer) {
  58                 const fragment = this._getSchemaFragment(pointer);
  59                 return fragment && (fragment.type === 'array' ? fragment.items.enum : fragment.enum);
  60         }
  61
  62         isRequired(pointer) {
  63                 const parentPointer = JSONPointer.extractParentPointer(pointer);
  64                 const lastPart = JSONPointer.extractLastPart(pointer);
  65                 let parentFragment = this._getSchemaFragment(parentPointer);
  66                 return parentFragment && parentFragment.required && parentFragment.required.includes(lastPart);
  67         }
  68
  69         isNumber(pointer) {
  70                 const fragment = this._getSchemaFragment(pointer);
  71                 return fragment && fragment.type === 'number';
  72         }
  73
  74         getMaxValue(pointer) {
  75                 const fragment = this._getSchemaFragment(pointer);
  76                 return fragment && fragment.maximum;
  77         }
  78
  79         getMinValue(pointer) {
  80                 const fragment = this._getSchemaFragment(pointer);
  81                 return fragment && fragment.minimum;
  82         }
  83
  84         isString(pointer) {
  85                 const fragment = this._getSchemaFragment(pointer);
  86                 return fragment && fragment.type === 'string';
  87         }
  88
  89         getPattern(pointer) {
  90                 const fragment = this._getSchemaFragment(pointer);
  91                 return fragment && fragment.pattern;
  92         }
  93
  94         getMaxLength(pointer) {
  95                 const fragment = this._getSchemaFragment(pointer);
  96                 return fragment && fragment.maxLength;
  97         }
  98
  99         getMinLength(pointer) {
 100                 const fragment = this._getSchemaFragment(pointer);
 101                 return fragment && fragment.minLength;
 102         }
 103
 104         isArray(pointer) {
 105                 const fragment = this._getSchemaFragment(pointer);
 106                 return fragment && fragment.type === 'array';
 107         }
 108
 109         _getSchemaFragment(pointer) {
 110                 if (this._fragmentsCache.has(pointer)) {
 111                         return this._fragmentsCache.get(pointer);
 112                 }
 113
 114                 let parts = JSONPointer.extractParts(pointer);
 115
 116                 let fragment = parts.reduce((fragment, part) => {
 117                         if (fragment === undefined) {
 118                                 return undefined;
 119                         }
 120
 121                         if (fragment.$ref) {
 122                                 fragment = this._getSchemaFragmentByRef(fragment.$ref);
 123                         }
 124
 125                         switch (fragment.type) {
 126                                 case 'object':
 127                                         return fragment.properties && fragment.properties[part];
 128
 129                                 case 'array':
 130                                         return fragment.enum && fragment.enum[part];
 131
 132                                 default:
 133                                         // throw new Error(`Incorrect/unsupported JSONPointer "${pointer}" from "${part}"`);
 134                                         return undefined;
 135                         }
 136                 }, this._schema);
 137
 138                 while(fragment && fragment.$ref) {
 139                         fragment = this._getSchemaFragmentByRef(fragment.$ref);
 140                 }
 141
 142                 this._fragmentsCache.set(pointer, fragment);
 143                 return fragment;
 144         }
 145
 146         _getSchemaFragmentByRef($ref) {
 147                 let pointer = $ref.substr(1);
 148                 return JSONPointer.getValue(this._schema, pointer);
 149                 // let fragmentAjv = new Ajv();
 150                 // fragmentAjv.addSchema(this._schema);
 151                 // let compiledFragment = fragmentAjv.compile({$ref});
 152                 // let fragment = compiledFragment.refVal[compiledFragment.refs[$ref]];
 153                 // return fragment;
 154         }
 155 };