nodejs json-schema fail to read schema

Question

nodejs json-schema fail to read schema

I have an express app, which has a post method(the post is a json type):

server.js(simplified version):

   app.post('/listener/v1/event/', function(req, res) {
            .
            .
            var event = req.body;
            var validator = require("./validator");
            validator.validate(event);
    }

validator.js contains the validation for the json:

var jsonschemavalidate = require("json-schema");
var basicSchema = require('fs').readFileSync('./schema.json', 'utf8');

exports.validate = function (event) {
    console.log(jsonschemavalidate.validate(event, basicSchema).errors);
}

The schema.json:

{ 
    name : "test",
    type : 'object', 
    properties : { 
        event_id : { type : 'string' }, 
        timestamp : { type : 'string' } 
    }
}

For the input I use curl:

curl -i -X POST -H 'Content-Type: application/json' -d '{"event_id": "NedaleGassss", "timestamp": "a2009321"}' http://localhost:3000/listener/v1/event/

The output is as follows:

[ { property: '',
    message: 'Invalid schema/property definition {\n    name : "test",\n    type : "object",\n    additionalProperties : false,\n    properties :\n    {\n        event_id            : { type : "string" },\n        timestamp        \t: { type : "string" }\n    }\n}' } ]

json
node.js
rest
express
jsonschema

Answer 1

Your schema is invalid, as the error says. The schema should also be valid JSON, so properties and strings should be double quoted:

{ 
  "name" : "test",
  "type" : "object", 
  "properties"  : { 
    "event_id"  : { "type" : "string" }, 
    "timestamp" : { "type" : "string" } 
  }
}

This should do the trick, (unless you figured it out already in the past year)

And also:

var basicSchema = require('fs').readFileSync('./schema.json', 'utf8');

could probably be replaced by:

var basicSchema = require('./schema');