NPE when using binary string response type

[jbaldassari]

This issue was originally reported here: https://groups.google.com/forum/#!topic/swagger-swaggersocket/j-fJzrDLICQ

I have a similar issue using swagger-inflector v1 and swagger-codegen with okhttp. I have a response section that looks like:

      responses:
        '200':
          schema:
            type: string
            format: binary

When I send a byte[] response back I see this stack trace:

[ERROR] io.swagger.inflector.schema.SchemaValidator - can't validate model against schema
java.lang.NullPointerException: unhandled token type VALUE_EMBEDDED_OBJECT
	at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:787)
	at com.github.fge.jackson.NodeType.getNodeType(NodeType.java:144)
	at com.github.fge.jsonschema.processors.data.SchemaContext.<init>(SchemaContext.java:50)
	at com.github.fge.jsonschema.processors.validation.InstanceValidator.process(InstanceValidator.java:103)
	at com.github.fge.jsonschema.processors.validation.ValidationProcessor.process(ValidationProcessor.java:56)
	at com.github.fge.jsonschema.processors.validation.ValidationProcessor.process(ValidationProcessor.java:34)
	at com.github.fge.jsonschema.core.processing.ProcessingResult.of(ProcessingResult.java:79)
	at com.github.fge.jsonschema.main.JsonSchemaImpl.doValidate(JsonSchemaImpl.java:77)
	at com.github.fge.jsonschema.main.JsonSchemaImpl.validate(JsonSchemaImpl.java:100)
	at com.github.fge.jsonschema.main.JsonSchemaImpl.validate(JsonSchemaImpl.java:110)
	at io.swagger.inflector.schema.SchemaValidator.validate(SchemaValidator.java:32)
	at io.swagger.inflector.controllers.SwaggerOperationController.doValidation(SwaggerOperationController.java:808)
	at io.swagger.inflector.controllers.SwaggerOperationController.validate(SwaggerOperationController.java:711)
	at io.swagger.inflector.controllers.SwaggerOperationController.apply(SwaggerOperationController.java:542)
	at io.swagger.inflector.controllers.SwaggerOperationController.apply(SwaggerOperationController.java:89)

On the client side I get:

com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 1 path $

The client-side error may actually be due to an errant Content-Type: application/json header somewhere. I haven't had time to dig too deeply into that yet, but the schema validation error on the server definitely seems like an issue.

I also came across this related issue: https://github.com/fge/jackson-coreutils/issues/14