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Add improved error information when validation fails

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toasted-nutbread 2020-02-02 10:47:30 -05:00
parent fca5c75151
commit 3bef380e3b
1 changed files with 114 additions and 51 deletions
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165
ext/bg/js/json-schema.js
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@ -93,7 +93,7 @@ class JsonSchemaProxyHandler {
value = JsonSchema.isolate(value); value = JsonSchema.isolate(value);
JsonSchemaProxyHandler.validate(value, propertySchema); JsonSchemaProxyHandler.validate(value, propertySchema, new JsonSchemaTraversalInfo(value, propertySchema));
target[property] = value; target[property] = value;
return true; return true;
@ -189,206 +189,244 @@ class JsonSchemaProxyHandler {
return type; return type;
} }
static validate(value, schema) { static validate(value, schema, info) {
JsonSchemaProxyHandler.validateSingleSchema(value, schema); JsonSchemaProxyHandler.validateSingleSchema(value, schema, info);
JsonSchemaProxyHandler.validateConditional(value, schema); JsonSchemaProxyHandler.validateConditional(value, schema, info);
JsonSchemaProxyHandler.validateAllOf(value, schema); JsonSchemaProxyHandler.validateAllOf(value, schema, info);
JsonSchemaProxyHandler.validateAnyOf(value, schema); JsonSchemaProxyHandler.validateAnyOf(value, schema, info);
JsonSchemaProxyHandler.validateOneOf(value, schema); JsonSchemaProxyHandler.validateOneOf(value, schema, info);
JsonSchemaProxyHandler.validateNoneOf(value, schema); JsonSchemaProxyHandler.validateNoneOf(value, schema, info);
} }
static validateConditional(value, schema) { static validateConditional(value, schema, info) {
const ifSchema = schema.if; const ifSchema = schema.if;
if (!JsonSchemaProxyHandler.isObject(ifSchema)) { return; } if (!JsonSchemaProxyHandler.isObject(ifSchema)) { return; }
let okay = true; let okay = true;
info.schemaPush('if', ifSchema);
try { try {
JsonSchemaProxyHandler.validate(value, ifSchema, info); JsonSchemaProxyHandler.validate(value, ifSchema, info);
} catch (e) { } catch (e) {
okay = false; okay = false;
} }
info.schemaPop();
const nextSchema = okay ? schema.then : schema.else; const nextSchema = okay ? schema.then : schema.else;
if (JsonSchemaProxyHandler.isObject(nextSchema)) { if (JsonSchemaProxyHandler.isObject(nextSchema)) {
JsonSchemaProxyHandler.validate(value, nextSchema); info.schemaPush(okay ? 'then' : 'else', nextSchema);
JsonSchemaProxyHandler.validate(value, nextSchema, info);
info.schemaPop();
} }
} }
static validateAllOf(value, schema) { static validateAllOf(value, schema, info) {
const subSchemas = schema.allOf; const subSchemas = schema.allOf;
if (!Array.isArray(subSchemas)) { return; } if (!Array.isArray(subSchemas)) { return; }
info.schemaPush('allOf', subSchemas);
for (let i = 0; i < subSchemas.length; ++i) { for (let i = 0; i < subSchemas.length; ++i) {
JsonSchemaProxyHandler.validate(value, subSchemas[i]); const subSchema = subSchemas[i];
info.schemaPush(i, subSchema);
JsonSchemaProxyHandler.validate(value, subSchema, info);
info.schemaPop();
} }
info.schemaPop();
} }
static validateAnyOf(value, schema) { static validateAnyOf(value, schema, info) {
const subSchemas = schema.anyOf; const subSchemas = schema.anyOf;
if (!Array.isArray(subSchemas)) { return; } if (!Array.isArray(subSchemas)) { return; }
info.schemaPush('anyOf', subSchemas);
for (let i = 0; i < subSchemas.length; ++i) { for (let i = 0; i < subSchemas.length; ++i) {
const subSchema = subSchemas[i];
info.schemaPush(i, subSchema);
try { try {
JsonSchemaProxyHandler.validate(value, subSchemas[i]); JsonSchemaProxyHandler.validate(value, subSchema, info);
return; return;
} catch (e) { } catch (e) {
// NOP // NOP
} }
info.schemaPop();
} }
throw new JsonSchemaValidationError('0 anyOf schemas matched', value, schema); throw new JsonSchemaValidationError('0 anyOf schemas matched', value, schema, info);
// info.schemaPop(); // Unreachable
} }
static validateOneOf(value, schema) { static validateOneOf(value, schema, info) {
const subSchemas = schema.oneOf; const subSchemas = schema.oneOf;
if (!Array.isArray(subSchemas)) { return; } if (!Array.isArray(subSchemas)) { return; }
info.schemaPush('oneOf', subSchemas);
let count = 0; let count = 0;
for (let i = 0; i < subSchemas.length; ++i) { for (let i = 0; i < subSchemas.length; ++i) {
const subSchema = subSchemas[i];
info.schemaPush(i, subSchema);
try { try {
JsonSchemaProxyHandler.validate(value, subSchemas[i]); JsonSchemaProxyHandler.validate(value, subSchema, info);
++count; ++count;
} catch (e) { } catch (e) {
// NOP // NOP
} }
info.schemaPop();
} }
if (count !== 1) { if (count !== 1) {
throw new JsonSchemaValidationError(`${count} oneOf schemas matched`, value, schema); throw new JsonSchemaValidationError(`${count} oneOf schemas matched`, value, schema, info);
} }
info.schemaPop();
} }
static validateNoneOf(value, schema) { static validateNoneOf(value, schema, info) {
const subSchemas = schema.not; const subSchemas = schema.not;
if (!Array.isArray(subSchemas)) { return; } if (!Array.isArray(subSchemas)) { return; }
info.schemaPush('not', subSchemas);
for (let i = 0; i < subSchemas.length; ++i) { for (let i = 0; i < subSchemas.length; ++i) {
const subSchema = subSchemas[i];
info.schemaPush(i, subSchema);
try { try {
JsonSchemaProxyHandler.validate(value, subSchemas[i]); JsonSchemaProxyHandler.validate(value, subSchema, info);
} catch (e) { } catch (e) {
info.schemaPop();
continue; continue;
} }
throw new JsonSchemaValidationError(`not[${i}] schema matched`, value, schema); throw new JsonSchemaValidationError(`not[${i}] schema matched`, value, schema, info);
} }
info.schemaPop();
} }
static validateSingleSchema(value, schema) { static validateSingleSchema(value, schema, info) {
const type = JsonSchemaProxyHandler.getValueType(value); const type = JsonSchemaProxyHandler.getValueType(value);
const schemaType = schema.type; const schemaType = schema.type;
if (!JsonSchemaProxyHandler.isValueTypeAny(value, type, schemaType)) { if (!JsonSchemaProxyHandler.isValueTypeAny(value, type, schemaType)) {
throw new JsonSchemaValidationError(`Value type ${type} does not match schema type ${schemaType}`, value, schema); throw new JsonSchemaValidationError(`Value type ${type} does not match schema type ${schemaType}`, value, schema, info);
} }
const schemaEnum = schema.enum; const schemaEnum = schema.enum;
if (Array.isArray(schemaEnum) && !JsonSchemaProxyHandler.valuesAreEqualAny(value, schemaEnum)) { if (Array.isArray(schemaEnum) && !JsonSchemaProxyHandler.valuesAreEqualAny(value, schemaEnum)) {
throw new JsonSchemaValidationError('Invalid enum value', value, schema); throw new JsonSchemaValidationError('Invalid enum value', value, schema, info);
} }
switch (type) { switch (type) {
case 'number': case 'number':
JsonSchemaProxyHandler.validateNumber(value, schema); JsonSchemaProxyHandler.validateNumber(value, schema, info);
break; break;
case 'string': case 'string':
JsonSchemaProxyHandler.validateString(value, schema); JsonSchemaProxyHandler.validateString(value, schema, info);
break; break;
case 'array': case 'array':
JsonSchemaProxyHandler.validateArray(value, schema); JsonSchemaProxyHandler.validateArray(value, schema, info);
break; break;
case 'object': case 'object':
JsonSchemaProxyHandler.validateObject(value, schema); JsonSchemaProxyHandler.validateObject(value, schema, info);
break; break;
} }
} }
static validateNumber(value, schema) { static validateNumber(value, schema, info) {
const multipleOf = schema.multipleOf; const multipleOf = schema.multipleOf;
if (typeof multipleOf === 'number' && Math.floor(value / multipleOf) * multipleOf !== value) { if (typeof multipleOf === 'number' && Math.floor(value / multipleOf) * multipleOf !== value) {
throw new JsonSchemaValidationError(`Number is not a multiple of ${multipleOf}`, value, schema); throw new JsonSchemaValidationError(`Number is not a multiple of ${multipleOf}`, value, schema, info);
} }
const minimum = schema.minimum; const minimum = schema.minimum;
if (typeof minimum === 'number' && value < minimum) { if (typeof minimum === 'number' && value < minimum) {
throw new JsonSchemaValidationError(`Number is less than ${minimum}`, value, schema); throw new JsonSchemaValidationError(`Number is less than ${minimum}`, value, schema, info);
} }
const exclusiveMinimum = schema.exclusiveMinimum; const exclusiveMinimum = schema.exclusiveMinimum;
if (typeof exclusiveMinimum === 'number' && value <= exclusiveMinimum) { if (typeof exclusiveMinimum === 'number' && value <= exclusiveMinimum) {
throw new JsonSchemaValidationError(`Number is less than or equal to ${exclusiveMinimum}`, value, schema); throw new JsonSchemaValidationError(`Number is less than or equal to ${exclusiveMinimum}`, value, schema, info);
} }
const maximum = schema.maximum; const maximum = schema.maximum;
if (typeof maximum === 'number' && value > maximum) { if (typeof maximum === 'number' && value > maximum) {
throw new JsonSchemaValidationError(`Number is greater than ${maximum}`, value, schema); throw new JsonSchemaValidationError(`Number is greater than ${maximum}`, value, schema, info);
} }
const exclusiveMaximum = schema.exclusiveMaximum; const exclusiveMaximum = schema.exclusiveMaximum;
if (typeof exclusiveMaximum === 'number' && value >= exclusiveMaximum) { if (typeof exclusiveMaximum === 'number' && value >= exclusiveMaximum) {
throw new JsonSchemaValidationError(`Number is greater than or equal to ${exclusiveMaximum}`, value, schema); throw new JsonSchemaValidationError(`Number is greater than or equal to ${exclusiveMaximum}`, value, schema, info);
} }
} }
static validateString(value, schema) { static validateString(value, schema, info) {
const minLength = schema.minLength; const minLength = schema.minLength;
if (typeof minLength === 'number' && value.length < minLength) { if (typeof minLength === 'number' && value.length < minLength) {
throw new JsonSchemaValidationError('String length too short', value, schema); throw new JsonSchemaValidationError('String length too short', value, schema, info);
} }
const maxLength = schema.maxLength; const maxLength = schema.maxLength;
if (typeof maxLength === 'number' && value.length > maxLength) { if (typeof maxLength === 'number' && value.length > maxLength) {
throw new JsonSchemaValidationError('String length too long', value, schema); throw new JsonSchemaValidationError('String length too long', value, schema, info);
} }
} }
static validateArray(value, schema) { static validateArray(value, schema, info) {
const minItems = schema.minItems; const minItems = schema.minItems;
if (typeof minItems === 'number' && value.length < minItems) { if (typeof minItems === 'number' && value.length < minItems) {
throw new JsonSchemaValidationError('Array length too short', value, schema); throw new JsonSchemaValidationError('Array length too short', value, schema, info);
} }
const maxItems = schema.maxItems; const maxItems = schema.maxItems;
if (typeof maxItems === 'number' && value.length > maxItems) { if (typeof maxItems === 'number' && value.length > maxItems) {
throw new JsonSchemaValidationError('Array length too long', value, schema); throw new JsonSchemaValidationError('Array length too long', value, schema, info);
} }
for (let i = 0, ii = value.length; i < ii; ++i) { for (let i = 0, ii = value.length; i < ii; ++i) {
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, i, value); const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, i, value);
if (propertySchema === null) { if (propertySchema === null) {
throw new JsonSchemaValidationError(`No schema found for array[${i}]`, value, schema); throw new JsonSchemaValidationError(`No schema found for array[${i}]`, value, schema, info);
} }
JsonSchemaProxyHandler.validate(value[i], propertySchema); const propertyValue = value[i];
info.valuePush(i, propertyValue);
info.schemaPush(i, propertySchema);
JsonSchemaProxyHandler.validate(propertyValue, propertySchema, info);
info.schemaPop();
info.valuePop();
} }
} }
static validateObject(value, schema) { static validateObject(value, schema, info) {
const properties = new Set(Object.getOwnPropertyNames(value)); const properties = new Set(Object.getOwnPropertyNames(value));
const required = schema.required; const required = schema.required;
if (Array.isArray(required)) { if (Array.isArray(required)) {
for (const property of required) { for (const property of required) {
if (!properties.has(property)) { if (!properties.has(property)) {
throw new JsonSchemaValidationError(`Missing property ${property}`, value, schema); throw new JsonSchemaValidationError(`Missing property ${property}`, value, schema, info);
} }
} }
} }
const minProperties = schema.minProperties; const minProperties = schema.minProperties;
if (typeof minProperties === 'number' && properties.length < minProperties) { if (typeof minProperties === 'number' && properties.length < minProperties) {
throw new JsonSchemaValidationError('Not enough object properties', value, schema); throw new JsonSchemaValidationError('Not enough object properties', value, schema, info);
} }
const maxProperties = schema.maxProperties; const maxProperties = schema.maxProperties;
if (typeof maxProperties === 'number' && properties.length > maxProperties) { if (typeof maxProperties === 'number' && properties.length > maxProperties) {
throw new JsonSchemaValidationError('Too many object properties', value, schema); throw new JsonSchemaValidationError('Too many object properties', value, schema, info);
} }
for (const property of properties) { for (const property of properties) {
const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, property, value); const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, property, value);
if (propertySchema === null) { if (propertySchema === null) {
throw new JsonSchemaValidationError(`No schema found for ${property}`, value, schema); throw new JsonSchemaValidationError(`No schema found for ${property}`, value, schema, info);
} }
JsonSchemaProxyHandler.validate(value[property], propertySchema);
const propertyValue = value[property];
info.valuePush(property, propertyValue);
info.schemaPush(property, propertySchema);
JsonSchemaProxyHandler.validate(propertyValue, propertySchema, info);
info.schemaPop();
info.valuePop();
} }
} }
@ -530,12 +568,37 @@ class JsonSchemaProxyHandler {
JsonSchemaProxyHandler._unconstrainedSchema = {}; JsonSchemaProxyHandler._unconstrainedSchema = {};
class JsonSchemaTraversalInfo {
constructor(value, schema) {
this.valuePath = [];
this.schemaPath = [];
this.valuePush([null, value]);
this.schemaPush([null, schema]);
}
valuePush(path, value) {
this.valuePath.push([path, value]);
}
valuePop() {
this.valuePath.pop();
}
schemaPush(path, schema) {
this.schemaPath.push([path, schema]);
}
schemaPop() {
this.schemaPath.pop();
}
}
class JsonSchemaValidationError extends Error { class JsonSchemaValidationError extends Error {
constructor(message, value, schema, path) { constructor(message, value, schema, info) {
super(message); super(message);
this.value = value; this.value = value;
this.schema = schema; this.schema = schema;
this.path = path; this.info = info;
} }
} }
@ -545,7 +608,7 @@ class JsonSchema {
} }
static validate(value, schema) { static validate(value, schema) {
return JsonSchemaProxyHandler.validate(value, schema); return JsonSchemaProxyHandler.validate(value, schema, new JsonSchemaTraversalInfo(value, schema));
} }
static getValidValueOrDefault(schema, value) { static getValidValueOrDefault(schema, value) {