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// org.onap.dcae
// ============LICENSE_START====================================================
// Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
// =============================================================================
// Licensed 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.
// ============LICENSE_END======================================================
//
// ECOMP is a trademark and service mark of AT&T Intellectual Property.
import { Injectable } from '@angular/core';
import {MetaSchemaService} from './metaschema.service';
import {ValidateJSONService} from './validate-json.service';
import * as Ajv from 'ajv';
@Injectable()
export class ValidateMetaSchemaService {
private ajv: any;
private schemaValidate: any;
private metaSchema: MetaSchemaService;
private jsonValidate: ValidateJSONService;
private lastErrors:string[] = [];
constructor(metaSchemaService: MetaSchemaService, jsonValidateService: ValidateJSONService) {
this.metaSchema = metaSchemaService;
this.jsonValidate = jsonValidateService;
}
validate(schema: string): boolean {
// check JSON
if (this.jsonValidate.validate(schema) === false) {
// assumes simple message - TBD???
this.lastErrors[0] = this.jsonValidate.validateMsgs();
return false;
}
// Schema is assumed to be V4 for now (jsonschema does not support V6 yet so we must wait since this is used by the CLI)
try {
this.ajv = new Ajv({
meta: false, // optional, to prevent adding draft-06 meta-schema
extendRefs: true, // optional, current default is to 'fail', spec behaviour is to 'ignore'
allErrors: true,
unknownFormats: 'ignore' // optional, current default is true (fail)
});
// change this to http get at some point TBD
const schemav4: any = { 'id': 'http://json-schema.org/draft-04/schema#', '$schema': 'http://json-schema.org/draft-04/schema#', 'description': 'Core schema meta-schema', 'definitions': { 'schemaArray': { 'type': 'array', 'minItems': 1, 'items': { '$ref': '#' } }, 'positiveInteger': { 'type': 'integer', 'minimum': 0 }, 'positiveIntegerDefault0': { 'allOf': [ { '$ref': '#/definitions/positiveInteger' }, { 'default': 0 } ] }, 'simpleTypes': { 'enum': [ 'array', 'boolean', 'integer', 'null', 'number', 'object', 'string' ] }, 'stringArray': { 'type': 'array', 'items': { 'type': 'string' }, 'minItems': 1, 'uniqueItems': true } }, 'type': 'object', 'properties': { 'id': { 'type': 'string', 'format': 'uri' }, '$schema': { 'type': 'string', 'format': 'uri' }, 'title': { 'type': 'string' }, 'description': { 'type': 'string' }, 'default': {}, 'multipleOf': { 'type': 'number', 'minimum': 0, 'exclusiveMinimum': true }, 'maximum': { 'type': 'number' }, 'exclusiveMaximum': { 'type': 'boolean', 'default': false }, 'minimum': { 'type': 'number' }, 'exclusiveMinimum': { 'type': 'boolean', 'default': false }, 'maxLength': { '$ref': '#/definitions/positiveInteger' }, 'minLength': { '$ref': '#/definitions/positiveIntegerDefault0' }, 'pattern': { 'type': 'string', 'format': 'regex' }, 'additionalItems': { 'anyOf': [ { 'type': 'boolean' }, { '$ref': '#' } ], 'default': {} }, 'items': { 'anyOf': [ { '$ref': '#' }, { '$ref': '#/definitions/schemaArray' } ], 'default': {} }, 'maxItems': { '$ref': '#/definitions/positiveInteger' }, 'minItems': { '$ref': '#/definitions/positiveIntegerDefault0' }, 'uniqueItems': { 'type': 'boolean', 'default': false }, 'maxProperties': { '$ref': '#/definitions/positiveInteger' }, 'minProperties': { '$ref': '#/definitions/positiveIntegerDefault0' }, 'required': { '$ref': '#/definitions/stringArray' }, 'additionalProperties': { 'anyOf': [ { 'type': 'boolean' }, { '$ref': '#' } ], 'default': {} }, 'definitions': { 'type': 'object', 'additionalProperties': { '$ref': '#' }, 'default': {} }, 'properties': { 'type': 'object', 'additionalProperties': { '$ref': '#' }, 'default': {} }, 'patternProperties': { 'type': 'object', 'additionalProperties': { '$ref': '#' }, 'default': {} }, 'dependencies': { 'type': 'object', 'additionalProperties': { 'anyOf': [ { '$ref': '#' }, { '$ref': '#/definitions/stringArray' } ] } }, 'enum': { 'type': 'array', 'minItems': 1, 'uniqueItems': true }, 'type': { 'anyOf': [ { '$ref': '#/definitions/simpleTypes' }, { 'type': 'array', 'items': { '$ref': '#/definitions/simpleTypes' }, 'minItems': 1, 'uniqueItems': true } ] }, 'allOf': { '$ref': '#/definitions/schemaArray' }, 'anyOf': { '$ref': '#/definitions/schemaArray' }, 'oneOf': { '$ref': '#/definitions/schemaArray' }, 'not': { '$ref': '#' } }, 'dependencies': { 'exclusiveMaximum': [ 'maximum' ], 'exclusiveMinimum': [ 'minimum' ] }, 'default': {}}
const metaSchema = schemav4;
this.ajv.addMetaSchema(metaSchema);
this.ajv._opts.defaultMeta = metaSchema.id;
// Optionally you can also disable keywords defined in draft-06
this.ajv.removeKeyword('propertyNames');
this.ajv.removeKeyword('contains');
this.ajv.removeKeyword('const');
const sValidate = this.ajv.compile(this.metaSchema.currentMetaSchema());
const result = sValidate(JSON.parse(schema));
let j = 0;
if (result === false) {
for ( const errMsg of Object.keys(sValidate.errors)) {
let msg = sValidate.errors[errMsg].message;
if (sValidate.errors[errMsg].hasOwnProperty('params')) {
if (sValidate.errors[errMsg].params.hasOwnProperty('additionalProperty')) {
msg = msg + ' - ';
msg = msg + sValidate.errors[errMsg].params.additionalProperty;
}
}
let dupMsg = false;
for (const k in this.lastErrors) {
if ( this.lastErrors[k] === msg) {
dupMsg = true;
}
}
if (dupMsg === false) {
this.lastErrors[j] = msg;
j = j + 1;
}
}
}
return result;
} catch(ajvError){
this.lastErrors[0] = ajvError;
}
}
validateMsgs(): string[] {
return this.lastErrors;
}
}
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