Class: JSON::Validator
- Inherits:
-
Object
- Object
- JSON::Validator
- Defined in:
- lib/json-schema/validator.rb
Constant Summary collapse
- @@schemas =
{}
- @@cache_schemas =
false
- @@default_opts =
{ :list => false, :version => nil, :validate_schema => false, :record_errors => false, :errors_as_objects => false, :insert_defaults => false }
- @@validators =
{}
- @@default_validator =
nil
- @@available_json_backends =
[]
- @@json_backend =
'yajl'
- @@serializer =
lambda{|o| Marshal.dump(o) }
- @@mutex =
Mutex.new
Class Method Summary collapse
- .add_schema(schema) ⇒ Object
- .cache_schemas=(val) ⇒ Object
- .clear_cache ⇒ Object
- .default_validator ⇒ Object
- .fully_validate(schema, data, opts = {}) ⇒ Object
- .fully_validate_json(schema, data, opts = {}) ⇒ Object
- .fully_validate_schema(schema, opts = {}) ⇒ Object
- .fully_validate_uri(schema, data, opts = {}) ⇒ Object
- .json_backend ⇒ Object
- .json_backend=(backend) ⇒ Object
- .metaschema_for(version_string) ⇒ Object
- .parse(s) ⇒ Object
- .register_default_validator(v) ⇒ Object
- .register_validator(v) ⇒ Object
- .schemas ⇒ Object
- .validate(schema, data, opts = {}) ⇒ Object
- .validate!(schema, data, opts = {}) ⇒ Object (also: validate2)
- .validate_json(schema, data, opts = {}) ⇒ Object
- .validate_json!(schema, data, opts = {}) ⇒ Object
- .validate_uri(schema, data, opts = {}) ⇒ Object
- .validate_uri!(schema, data, opts = {}) ⇒ Object
- .validators ⇒ Object
- .version_string_for(version) ⇒ Object
Instance Method Summary collapse
-
#build_schemas(parent_schema) ⇒ Object
Build all schemas with IDs, mapping out the namespace.
-
#handle_schema(parent_schema, obj) ⇒ Object
Either load a reference schema or create a new schema.
-
#initialize(schema_data, data, opts = {}) ⇒ Validator
constructor
A new instance of Validator.
- #load_ref_schema(parent_schema, ref) ⇒ Object
-
#validate ⇒ Object
Run a simple true/false validation of data against a schema.
- #validation_error(error) ⇒ Object
- #validation_errors ⇒ Object
Constructor Details
#initialize(schema_data, data, opts = {}) ⇒ Validator
Returns a new instance of Validator.
144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 |
# File 'lib/json-schema/validator.rb', line 144 def initialize(schema_data, data, opts={}) @options = @@default_opts.clone.merge(opts) @errors = [] # I'm not a fan of this, but it's quick and dirty to get it working for now version_string = "draft-04" if @options[:version] version_string = @options[:version] = self.class.version_string_for(@options[:version]) u = URI.parse("http://json-schema.org/#{@options[:version]}/schema#") validator = JSON::Validator.validators["#{u.scheme}://#{u.host}#{u.path}"] @options[:version] = validator end @validation_options = @options[:record_errors] ? {:record_errors => true} : {} @validation_options[:insert_defaults] = true if @options[:insert_defaults] # validate the schema, if requested if @options[:validate_schema] begin = JSON::Validator.new(self.class.(version_string), schema_data) .validate rescue JSON::Schema::ValidationError, JSON::Schema::SchemaError raise $! end end @@mutex.synchronize { @base_schema = initialize_schema(schema_data) } @data = initialize_data(data) @@mutex.synchronize { build_schemas(@base_schema) } end |
Class Method Details
.add_schema(schema) ⇒ Object
375 376 377 |
# File 'lib/json-schema/validator.rb', line 375 def add_schema(schema) @@schemas[schema.uri.to_s] = schema if @@schemas[schema.uri.to_s].nil? end |
.cache_schemas=(val) ⇒ Object
379 380 381 |
# File 'lib/json-schema/validator.rb', line 379 def cache_schemas=(val) @@cache_schemas = val == true ? true : false end |
.clear_cache ⇒ Object
367 368 369 |
# File 'lib/json-schema/validator.rb', line 367 def clear_cache @@schemas = {} if @@cache_schemas == false end |
.default_validator ⇒ Object
387 388 389 |
# File 'lib/json-schema/validator.rb', line 387 def default_validator @@default_validator end |
.fully_validate(schema, data, opts = {}) ⇒ Object
347 348 349 350 351 |
# File 'lib/json-schema/validator.rb', line 347 def fully_validate(schema, data, opts={}) opts[:record_errors] = true validator = JSON::Validator.new(schema, data, opts) validator.validate end |
.fully_validate_json(schema, data, opts = {}) ⇒ Object
359 360 361 |
# File 'lib/json-schema/validator.rb', line 359 def fully_validate_json(schema, data, opts={}) fully_validate(schema, data, opts.merge(:json => true)) end |
.fully_validate_schema(schema, opts = {}) ⇒ Object
353 354 355 356 357 |
# File 'lib/json-schema/validator.rb', line 353 def fully_validate_schema(schema, opts={}) data = schema schema = (version_string_for(opts[:version])) fully_validate(schema, data, opts) end |
.fully_validate_uri(schema, data, opts = {}) ⇒ Object
363 364 365 |
# File 'lib/json-schema/validator.rb', line 363 def fully_validate_uri(schema, data, opts={}) fully_validate(schema, data, opts.merge(:uri => true)) end |
.json_backend ⇒ Object
399 400 401 402 403 404 405 |
# File 'lib/json-schema/validator.rb', line 399 def json_backend if defined?(MultiJson) MultiJson.respond_to?(:adapter) ? MultiJson.adapter : MultiJson.engine else @@json_backend end end |
.json_backend=(backend) ⇒ Object
407 408 409 410 411 412 413 414 415 416 417 418 419 |
# File 'lib/json-schema/validator.rb', line 407 def json_backend=(backend) if defined?(MultiJson) backend = backend == 'json' ? 'json_gem' : backend MultiJson.respond_to?(:use) ? MultiJson.use(backend) : MultiJson.engine = backend else backend = backend.to_s if @@available_json_backends.include?(backend) @@json_backend = backend else raise JSON::Schema::JsonParseError.new("The JSON backend '#{backend}' could not be found.") end end end |
.metaschema_for(version_string) ⇒ Object
140 141 142 |
# File 'lib/json-schema/validator.rb', line 140 def self.(version_string) File.join(Pathname.new(File.dirname(__FILE__)).parent.parent, "resources", "#{version_string}.json").to_s end |
.parse(s) ⇒ Object
421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 |
# File 'lib/json-schema/validator.rb', line 421 def parse(s) if defined?(MultiJson) MultiJson.respond_to?(:adapter) ? MultiJson.load(s) : MultiJson.decode(s) else case @@json_backend.to_s when 'json' JSON.parse(s) when 'yajl' json = StringIO.new(s) parser = Yajl::Parser.new parser.parse(json) else raise JSON::Schema::JsonParseError.new("No supported JSON parsers found. The following parsers are suported:\n * yajl-ruby\n * json") end end end |
.register_default_validator(v) ⇒ Object
395 396 397 |
# File 'lib/json-schema/validator.rb', line 395 def register_default_validator(v) @@default_validator = v end |
.register_validator(v) ⇒ Object
391 392 393 |
# File 'lib/json-schema/validator.rb', line 391 def register_validator(v) @@validators[v.to_s] = v end |
.schemas ⇒ Object
371 372 373 |
# File 'lib/json-schema/validator.rb', line 371 def schemas @@schemas end |
.validate(schema, data, opts = {}) ⇒ Object
314 315 316 317 318 319 320 321 322 |
# File 'lib/json-schema/validator.rb', line 314 def validate(schema, data,opts={}) begin validator = JSON::Validator.new(schema, data, opts) validator.validate return true rescue JSON::Schema::ValidationError, JSON::Schema::SchemaError return false end end |
.validate!(schema, data, opts = {}) ⇒ Object Also known as: validate2
332 333 334 335 336 |
# File 'lib/json-schema/validator.rb', line 332 def validate!(schema, data,opts={}) validator = JSON::Validator.new(schema, data, opts) validator.validate return true end |
.validate_json(schema, data, opts = {}) ⇒ Object
324 325 326 |
# File 'lib/json-schema/validator.rb', line 324 def validate_json(schema, data, opts={}) validate(schema, data, opts.merge(:json => true)) end |
.validate_json!(schema, data, opts = {}) ⇒ Object
339 340 341 |
# File 'lib/json-schema/validator.rb', line 339 def validate_json!(schema, data, opts={}) validate!(schema, data, opts.merge(:json => true)) end |
.validate_uri(schema, data, opts = {}) ⇒ Object
328 329 330 |
# File 'lib/json-schema/validator.rb', line 328 def validate_uri(schema, data, opts={}) validate(schema, data, opts.merge(:uri => true)) end |
.validate_uri!(schema, data, opts = {}) ⇒ Object
343 344 345 |
# File 'lib/json-schema/validator.rb', line 343 def validate_uri!(schema, data, opts={}) validate!(schema, data, opts.merge(:uri => true)) end |
.validators ⇒ Object
383 384 385 |
# File 'lib/json-schema/validator.rb', line 383 def validators @@validators end |
.version_string_for(version) ⇒ Object
123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 |
# File 'lib/json-schema/validator.rb', line 123 def self.version_string_for(version) # I'm not a fan of this, but it's quick and dirty to get it working for now return "draft-04" unless version case version.to_s when "draft4" "draft-04" when "draft3" "draft-03" when "draft2" "draft-02" when "draft1" "draft-01" else raise JSON::Schema::SchemaError.new("The requested JSON schema version is not supported") end end |
Instance Method Details
#build_schemas(parent_schema) ⇒ Object
Build all schemas with IDs, mapping out the namespace
231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 |
# File 'lib/json-schema/validator.rb', line 231 def build_schemas(parent_schema) # Build ref schemas if they exist if parent_schema.schema["$ref"] load_ref_schema(parent_schema, parent_schema.schema["$ref"]) end if parent_schema.schema["extends"] && parent_schema.schema["extends"].is_a?(String) load_ref_schema(parent_schema, parent_schema.schema["extends"]) end # Check for schemas in union types ["type", "disallow"].each do |key| if parent_schema.schema[key] && parent_schema.schema[key].is_a?(Array) parent_schema.schema[key].each_with_index do |type,i| if type.is_a?(Hash) handle_schema(parent_schema, type) end end end end # "definitions" are schemas in V4 if parent_schema.schema["definitions"] parent_schema.schema["definitions"].each do |k,v| handle_schema(parent_schema, v) end end # All properties are schemas if parent_schema.schema["properties"] parent_schema.schema["properties"].each do |k,v| handle_schema(parent_schema, v) end end if parent_schema.schema["patternProperties"] parent_schema.schema["patternProperties"].each do |k,v| handle_schema(parent_schema, v) end end # Items are always schemas if parent_schema.schema["items"] items = parent_schema.schema["items"].clone single = false if !items.is_a?(Array) items = [items] single = true end items.each_with_index do |item,i| handle_schema(parent_schema, item) end end # Each of these might be schemas ["additionalProperties", "additionalItems", "dependencies", "extends"].each do |key| if parent_schema.schema[key].is_a?(Hash) handle_schema(parent_schema, parent_schema.schema[key]) end end end |
#handle_schema(parent_schema, obj) ⇒ Object
Either load a reference schema or create a new schema
293 294 295 296 297 298 299 300 301 302 |
# File 'lib/json-schema/validator.rb', line 293 def handle_schema(parent_schema, obj) if obj.is_a?(Hash) schema_uri = parent_schema.uri.clone schema = JSON::Schema.new(obj,schema_uri,parent_schema.validator) if obj['id'] Validator.add_schema(schema) end build_schemas(schema) end end |
#load_ref_schema(parent_schema, ref) ⇒ Object
193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 |
# File 'lib/json-schema/validator.rb', line 193 def load_ref_schema(parent_schema,ref) uri = URI.parse(ref) if uri.relative? uri = parent_schema.uri.clone # Check for absolute path path = ref.split("#")[0] # This is a self reference and thus the schema does not need to be re-loaded if path.nil? || path == '' return end if path && path[0,1] == '/' uri.path = Pathname.new(path).cleanpath.to_s else uri = parent_schema.uri.merge(path) end uri.fragment = '' end if Validator.schemas[uri.to_s].nil? begin schema = JSON::Schema.new(JSON::Validator.parse(open(uri.to_s).read), uri, @options[:version]) Validator.add_schema(schema) build_schemas(schema) rescue JSON::ParserError # Don't rescue this error, we want JSON formatting issues to bubble up raise $! rescue Exception # Failures will occur when this URI cannot be referenced yet. Don't worry about it, # the proper error will fall out if the ref isn't ever defined end end end |
#validate ⇒ Object
Run a simple true/false validation of data against a schema
177 178 179 180 181 182 183 184 185 186 187 188 189 190 |
# File 'lib/json-schema/validator.rb', line 177 def validate() begin @base_schema.validate(@data,[],self,@validation_options) Validator.clear_cache if @options[:errors_as_objects] return @errors.map{|e| e.to_hash} else return @errors.map{|e| e.to_string} end rescue JSON::Schema::ValidationError Validator.clear_cache raise $! end end |
#validation_error(error) ⇒ Object
304 305 306 |
# File 'lib/json-schema/validator.rb', line 304 def validation_error(error) @errors.push(error) end |
#validation_errors ⇒ Object
308 309 310 |
# File 'lib/json-schema/validator.rb', line 308 def validation_errors @errors end |